Page 1 SERVICE MANUAL Published in Oct.’00 842AV110...
Page 2 CAUTION Danger of explosion if battery is incorrectly replaced. Replace only with the same or equivalent type recommended by the manufacturer. Dispose of used batteries according to the manufacturer’s instructions. CAUTION Double-pole/neutral fusing.
Page 3: Safety Precautions
Safety precautions This booklet provides safety warnings and precautions for our service personnel to ensure the safety of their customers, their machines as well as themselves during maintenance activities. Service personnel are advised to read this booklet carefully to familiarize themselves with the warnings and precautions described here before engaging in maintenance activities.
Page 4 Safety warnings and precautions Various symbols are used to protect our service personnel and customers from physical danger and to prevent damage to their property. These symbols are described below: DANGER: High risk of serious bodily injury or death may result from insufficient attention to or incorrect compliance with warning messages using this symbol.
Page 5: Installation Precautions
1. Installation Precautions WARNING • Do not use a power supply with a voltage other than that specified. Avoid multiple connections to one outlet: they may cause fire or electric shock. When using an extension cable, always check that it is adequate for the rated current..................... •...
Page 6: Specifications 1
2. Precautions for Maintenance WARNING • Always remove the power plug from the wall outlet before starting machine disassembly....• Always follow the procedures for maintenance described in the service manual and other related brochures............................• Under no circumstances attempt to bypass or disable safety features including safety mechanisms and protective circuits.
Page 7 • Do not pull on the AC power cord or connector wires on high-voltage components when removing them; always hold the plug itself....................... • Do not route the power cable where it may be stood on or trapped. If necessary, protect it with a cable cover or other appropriate item.
Page 8: Table Of Contents
2AV/X CONTENTS 1-1 Specifications 1-1-1 Specifications ............................1-1-1 1-1-2 Parts names and their functions ......................1-1-5 (1) Copier ............................. 1-1-5 (2) Operation panel ..........................1-1-6 1-1-3 Machine cross section .......................... 1-1-8 1-1-4 Drive system ............................1-1-9 (1) Drive system 1 (optical section) ...................... 1-1-9 (2) Drive system 2 (drive motor drive train) ..................
Page 9 2AV/X (6) A black line appears longitudinally....................1-5-20 (7) A black line appears laterally......................1-5-20 (8) One side of the copy image is darker than the other..............1-5-20 (9) Black dots appear on the image....................1-5-21 (10) Image is blurred.
Page 10: Assembly And Disassembly
2AV/X (4) The scanner does not travel......................1-5-30 (5) Multiple sheets of paper are fed at one time.................. 1-5-30 (6) Paper jams........................... 1-5-30 (7) Toner drops on the paper conveying path..................1-5-30 (8) Abnormal noise is heard....................... 1-5-30 1-6 Assembly and Disassembly 1-6-1 Precautions for assembly and disassembly ..................
Page 11 2AV/X 1-7 Requirements on PCB Replacement 1-7-1 Replacing the main PCB ........................1-7-1 1-7-2 Upgrading the firmware on the main PCB .................... 1-7-3 1-7-3 Upgrading the firmware on the operation unit PCB (20 cpm copier only) ..........1-7-5 1-7-4 Adjustment-free variable resistors (VR) ....................1-7-6 2-1 Mechanical construction 2-1-1 Paper feed section ..........................
Page 12: Specifications
2AV/X 1-1-1 Specifications 15 cpm copier Type ..........Desktop Copying system ......Indirect electrostatic system Originals ......... Sheets and books Maximum size: A3/11" × 17" Original feed system ...... Fixed Copy paper ........Drawer: Plain paper (64 – 80 g/m Bypass table: Plain paper (60 –...
Page 13 2AV/X Transfer system ......Transfer roller Fixing system ......... Heat roller Heat source: halogen heaters (850 W for 120 V specifications/910 W for 220-240 V specifications) Control temperature: 180°C/356°F (at normal ambient temperature) Abnormally high temperature protection device: 140°C/284°F thermostat Fixing pressure: 49 N Charge erasing system ....
Page 14 2AV/X 20 cpm copier Type ..........Desktop Copying system ......Indirect electrostatic system Originals ......... Sheets and books Maximum size: A3/11" × 17" Original feed system ...... Fixed Copy paper ........Drawer: Plain paper (64 – 80 g/m Bypass table: Plain paper (60 – 160 g/m Special paper: Transparencies, tracing paper, colored paper, letterhead and envelopes (when using the printer function only) Note: Use the bypass table for special paper.
Page 15 2AV/X Cleaning system ......Cleaning blade Scanning system ......Flat bed scanning by CCD image sensor Bit map memory ......17.1 MB (standard) Image storage memory ....46.9 MB (standard) Resolution ........600 × 600 dpi Light source ........Inert gas lamp Dimensions ........
Page 16: Parts Names And Their Functions
2AV/X 1-1-2 Parts names and their functions (1) Copier ‹ ¤ ‹ › ⁄ & Figure 1-1-1 1 Original cover (optional)* 2 Operation panel 3 Paper conveying unit 4 Multi-Bypass 5 Insert guides 6 Support tray 7 Toner cartridge 8 Toner cartridge release lever 9 Waste toner tank 0 Waste toner tank release lever ! Cleaning shaft...
Page 17: Operation Panel
2AV/X (2) Operation panel 15 cpm copier Metric Á ´ Œ · ‹ ¤⁄ )( % 6 54 ˇ „ ‚ › ‰ ° ‡ ﬁ ﬂ * & $# !0 Inch Á ´ Œ · ‹ ¤ ⁄ )( % 6 54 ˇ...
Page 18 2AV/X 20 cpm copier Metric ‹ ⁄ ﬂ › ¤ ‡ﬁ ^ & Inch ‹ ⁄ ﬂ › ¤ ‡ﬁ ^ & Figure 1-1-3 1 Start key (Indicator) * On-line/Printer key (Indicator) 2 Reset key ( Layout key (Indicator) 3 Interrupt key (Indicator) ) Copy exposure adjustment keys/Copy 4 Energy Saver (preheat) key (Indicator) exposure indicators...
Page 19: Machine Cross Section
2AV/X 1-1-3 Machine cross section Light path Paper path Figure 1-1-4 Machine cross section 1 Paper feed section 2 Main charging section 3 Optical section 4 Developing section 5 Transfer and paper conveying section 6 Cleaning section 7 Charge erasing section 8 Fixing section 1-1-8...
Page 20: Drive System
2AV/X 1-1-4 Drive system (1) Drive system 1 (optical section) As viewed from machine front Figure 1-1-5 1 Scanner motor gear 5 Scanner wire 2 Gear 44/16 6 Scanner wire pulley 3 Gear 26 7 Scanner wire pulley 4 Scanner wire drum 8 Scanner wire pulley 1-1-9...
Page 21: Drive System 2 (Drive Motor Drive Train)
2AV/X (2) Drive system 2 (drive motor drive train) ˆ ¨ Á — ‰ ‡ ˇ ﬁ ﬂ › & Œ · ‹ „ ´ ⁄ ¤ ‚ Å Î Í ” Ø As viewed from machine rear Figure 1-1-6 1 Drive motor gear ^ Upper paper feed clutch gear Œ...
Page 22: Drum
2AV/X 1-2-1 Drum Note the following when handling or storing the drum. • When removing the image formation unit, never expose the drum surface to strong direct light. • Keep the drum at an ambient temperature between –20°C/–4°F and 40°C/104°F and at a relative humidity not higher than 85% RH.
Page 23 2AV/X • 20 cpm copier a: 675 mm/26 " b: 873 mm/34 " c: 555 mm/21" d: 718 mm/28 " e: 603 mm/23 " f: 1218 mm/46 " g: 418 mm/16 " h: 951 mm/37 " Figure 1-2-1b Installation dimensions 1-2-2...
Page 24: Unpacking And Installation
2AV/X 1-3-1 Unpacking and installation (1) Installation procedure Start Unpack. Remove the tapes. Adjust the fixing pressure. Remove the pins holding light source units 1 and 2. Connect the power cord. Install the optional devices. Carry out initial developer setting (maintenance item U130).
Page 25 2AV/X Light source unit 1 pins Light source unit 2 pin *The diagram shows the 20 cpm copier. *The original cover is standard for Asia and Oceania specifications for the 15 cpm copier only. Figure 1-3-1 1-3-2...
Page 26 2AV/X Unpack • 15 cpm copier %& Figure 1-3-2a Unpacking 1 Copier # Bar code labels 2 Outer case $ Hinge joint 3 Inner frame % Instruction handbook 4 Upper pads ^ Plastic bag 5 Bottom pads & Business reply mail* 6 Bottom case * Drawer spacers 7 Skid...
Page 27 2AV/X • 20 cpm copier & Figure 1-3-2b Unpacking 1 Copier @ Instruction handbook 2 Outer case # Plastic bag 3 Inner frame $ Business reply mail* 4 Upper pads % Drawer spacers 5 Bottom pads ^ Drawer claw spacers 6 Bottom case &...
Page 28 2AV/X Remove the tapes. 1. Remove the tape holding the front cover and the power cord, and remove the tape binding the power cord. 2. Remove the tape holding the drawer. 3. Remove the two tapes holding the paper conveying unit and bypass tray. 4.
Page 29 2AV/X 7. Pull the drawer out and remove the tape holding each of the drawer spacers and then the spacers. 8. Remove the tape holding the fulcrum of the drawer lift inside the drawer. Fulcrum of the drawer lift Drawer spacers Figure 1-3-5 Rear cursor 9.
Page 30 2AV/X Remove the pins holding light source units 1 and 2. 1. Remove the two pins for light source unit 1 and the pin for light source unit 2. Light source unit 1 pins Light source unit 2 pin Figure 1-3-8 Install optional devices.
Page 31: Gear
2AV/X Load developer. 1. Remove the developing unit upper cover by pushing and lifting it in the direction of the arrow Developing unit upper cover in the diagram. Caution: Be sure to place the image formation unit on a level surface when loading developer. Figure 1-3-10 2.
Page 32 2AV/X 2. Check that the cleaning shaft is inserted as far as 12-pin connector it will go. 3. Refit the image formation unit using the two screws. 4. Connect the 12-pin connector. Figure 1-3-13 Waste toner tank Install a waste toner tank. release lever 1.While holding the waste toner tank release lever up, fit the waste toner tank in the copier.
Page 33: Gear
2AV/X Connect the power cord. 1. Connect the power cord to the connector on the copier. 2. Insert the power plug into the wall outlet. Carry out initial developer setting (maintenance item U130). 1. Turn the main switch on and enter the maintenance mode by entering “10871087” using the numeric keys. 2.
Page 34 2AV/X Install a toner cartridge. 1. Open the front cover. 2. Shift the toner cartridge release lever to the right until it stops. Toner cartridge release lever Figure 1-3-16 3. Tap the toner cartridge on the top five or six times and shake it horizontally eight to ten times to agitate the toner.
Page 35 2AV/X Make test copies. 1. Place an original and make test copies. Check if the center lines of the bypass tray and drawer are correct. If not, adjust the center lines. Completion of machine installation. 1-3-12...
Page 36: Setting Initial Copy Modes
2AV/X 1-3-2 Setting initial copy modes Factory settings are as follows: Factory setting Maintenance item Contents Metric Inch U253 Switching between double and single counts Double count Double count U254 Turning auto start function on/off U255 Setting auto clear time 90 s 90 s U256...
Page 37: Copier Management
2AV/X 1-3-3 Copier management In addition to a maintenance function for service, the copier is equipped with a management function which can be operated by users (mainly by the copier administrator). In this copier management mode, settings such as default settings can be changed.
Page 38: Setting Department Management Items
2AV/X (2) Setting department management items Turning department management on/off Clearing copy counts 1. Select “d01” and press the enter key. 1. Select “d04” and press the enter key. 2. Select “copy management on” or “copy 2. Select “clear” or “do not clear” and press the management off”...
Page 39 2AV/X Default drawer Copy limit Sets the drawer to be selected in cases such as Sets the number of copies limit for multiple copy- after the reset key is pressed. ing. 1. Select “F10” and press the enter key. 1. Select “F16” and press the enter key. 2.
Page 40 2AV/X Silent mode Auto preheat time Selects whether or not to enter silent mode after Sets the auto preheat time. copying. 1. Select “F25” and press the enter key. 1. Select “F22” and press the enter key. 2. Select the setting and press the enter key. 2.
Page 41: Using The Copier Management Mode (20 Cpm Copier)
2AV/X (4) Using the copier management mode (20 cpm copier) Start Press the */language key. Select “Management” and press the enter key. Enter the Execute department manage- management code. ment items (page 1-3-19). Select “End” and press the enter key. Select “Copy default”...
Page 42: Setting Department Management Items
2AV/X (5) Setting department management items Registering a new department code Clearing copy counts Sets a department code and the limit of the 1. Select “Management Setting” (“COPY MGMT number of copies for that department. SETTING”) and press the enter key. 1.
Page 43: Machine Default
2AV/X Photo original density Border erase width Adjusts the exposure to be used when photo Sets the default setting of the border erase width original is selected for the image mode. for the border erase mode. 1. Select “Photo original density set” and press 1.
Page 44: Language
2AV/X APS for special paper Auto shutoff time Sets whether to use the paper source with the Sets the auto shutoff time. special paper for auto paper selection and auto 1. Select “Auto shut-off time” and press the enter drawer switching. key.
Page 45: Installing The Key Counter (Option)
2AV/X 1-3-4 Installing the key counter (option) Key counter installation requires the following parts: Key counter set (P/N 2A369702) Contents of the set: • Key counter cover (P/N 2A360010) • Key counter retainer (P/N 66060030) • Key counter cover retainer (P/N 66060022) •...
Page 46 2AV/X 8. Refit the right cover. 9. Pass the 4-pin connector of the key counter through the aperture in the key counter cover retainer, and insert into the 4-pin connector of the copier. 10. Seat the projection of the key counter cover retainer in the aperture in the right cover, and Key counter cover retainer fasten them both to the copier using three...
Page 47: Installing The Original Size Detection Sensor (Option For The Metric Specifications Of The 15 Cpm Copier Only)
2AV/X 1-3-5 Installing the original size detection sensor (option for the metric specifications of the 15 cpm copier only) Original size detection sensor installation requires the following parts: • Original size detection sensor (P/N 35927290) • One (1) M3 × 8 bronze binding screw (P/N B1303080) Procedure 1.
Page 48: Installing The Drawer Heater (Option)
2AV/X 1-3-6 Installing the drawer heater (option) Drawer heater installation requires the following parts: For 120 V specifications Drawer heater set (P/N 3A569710) Contents of the set • One (1) BVM4 × 4 bronze binding screw (P/N B1304040) • Two (2) BVM4 × 6 bronze binding screws (P/N B1304060) •...
Page 49 2AV/X 7. Insert one of the 2-pin receptacles on the heater wire into the opening in the frame and connect the other 2-pin receptacle to the drawer heater cable. 2-pin receptacle Opening 2-pin receptacle Figure 1-3-27 8. Refit the drawer. 9.
Page 50: Maintenance Mode
2AV/X 1-4-1 Maintenance mode The copier is equipped with a maintenance function which can be used to maintain and service the machine. (1) Executing a maintenance item Start Enter 10871087. · · · · · · · Entering the maintenance mode Enter the number of the maintenance item to be executed using the cursor ·...
Page 51: Maintenance Mode Item List (For 20 Cpm Copier)
2AV/X (2) Maintenance mode item list (for 20 cpm copier) Item Initial Section Maintenance item contents setting* — General U000 Outputting an own-status report — U001 Exiting the maintenance mode U003 Setting the service telephone number *************** U004 Setting the machine number —...
Page 52 2AV/X Item Initial Section Maintenance item contents setting* — High voltage U111 Checking/clearing the drum drive time Developing U130 Initial setting for the developer — U131 Setting the toner sensor control voltage U132 Replenishing toner forcibly — U135 Checking toner feed motor operation —...
Page 53 2AV/X Item Initial Section Maintenance item contents setting* — Image U404 Adjusting margins for scanning an original from the DF processing U407 Adjusting the leading edge registration for memory image printing — Others U901 Checking/clearing copy counts by paper feed locations —...
Page 54: Contents Of Maintenance Mode Items (For 20 Cpm Copier)
2AV/X (3) Contents of maintenance mode items (for 20 cpm copier) Maintenance Description item No. U000 Outputting an own-status report Description Outputs lists of the current settings of the maintenance items, and paper jam and service call occurrences. Purpose To check the current setting of the maintenance items, or paper jam or service call occurrences. Before initializing or replacing the backup RAM, output a list of the current settings of the maintenance items to reenter the settings after initialization or replacement.
Page 55 2AV/X Maintenance Description item No. U003 Setting the service telephone number Description Sets the telephone number to be displayed when a service call code is detected. Purpose To set the telephone number to call service when installing the machine. Method Press the start key.
Page 56 2AV/X Maintenance Description item No. U005 Copying without paper Description Simulates the copy operation without paper feed. Purpose To check the overall operation of the machine. Method 1. Press the start key. The screen for selecting an item is displayed. 2.
Page 57 2AV/X Maintenance Description item No. U020 Initializing all data Description Initializes all the backup RAM on the main PCB to return to the original settings. Purpose Used when replacing the backup RAM on the main PCB. Method 1. Press the start key. The screen for executing is displayed. 2.
Page 58 2AV/X Maintenance Description item No. U030 Checking motor operation Description Drives each motor. Purpose To check the operation of each motor. Method 1. Press the start key. The screen for selecting an item is displayed. 2. Select the motor to be operated using the cursor up/down keys. 3.
Page 59 2AV/X Maintenance Description item No. U032 Checking clutch operation Description Turns each clutch on. Purpose To check the operation of each clutch. Method 1. Press the start key. The screen for selecting an item is displayed. 2. Select the clutch to be operated using the cursor up/down keys. 3.
Page 60: Gear
2AV/X Maintenance Description item No. U035 Setting folio size Description Changes the image area for copying onto folio size paper. Purpose To prevent the image at the trailing edge, or right or left side of the paper from not being copied by setting the actual size of the folio paper used.
Page 61 2AV/X Maintenance Description item No. U053 Interrupt copy mode While this maintenance item is being performed, a VTC pattern shown below is output in interrupt copy mode. Correct values for an A3/11" × 17" output are: A = 300 ± 0.75 mm B = 260 ±...
Page 62 2AV/X Maintenance Description item No. U061 Turning the exposure lamp on Description Turns the exposure lamp on. Purpose To check the exposure lamp. Method 1. Press the start key. The screen for executing is displayed. 2. Press the start key. The exposure lamp lights. 3.
Page 63 2AV/X Maintenance Description item No. U070 Adjusting the DF magnification Description Adjusts the DF original scanning speed. Purpose To be executed if the correct magnification is not obtained in the auxiliary scanning direction when the optional DF is used. Caution Before making this adjustment, ensure that the following adjustments have been made in maintenance mode.
Page 64 2AV/X Maintenance Description item No. U071 Adjustment 1. In interrupt copy mode, make a copy using the DF. 2. Check the copy image and adjust the registration as follows. For copy example 1, increase the setting of LEAD EDGE ADJ. For copy example 2, decrease the setting of LEAD EDGE ADJ.
Page 65 2AV/X Maintenance Description item No. U072 Adjustment 1. In interrupt copy mode, make a copy using the DF. 2. Check the copy image and adjust the center line as follows. For copy example 1, increase the setting. For copy example 2, decrease the setting. Reference Original Copy...
Page 66 2AV/X Maintenance Description item No. U074 Adjusting the DF input light luminosity Description Adjusts the luminosity of the exposure lamp for scanning originals from the optional DF. Purpose Used if the exposure amount differs significantly between when scanning an original on the contact glass and when scanning an original from the DF.
Page 67 2AV/X Maintenance Description item No. U087 Setting the reference data for identifying dust Available only when the mode is turned on. 1. Select the item to be set using the cursor up/down keys. The selected item is displayed in reverse. 2.
Page 68 2AV/X Maintenance Description item No. U091 Checking shading Description Performs scanning under the same conditions as before and after shading is performed, displaying the original scanning values at nine points of the contact glass. Purpose To check the change in original scanning values before and after shading. The results may be used to decide the causes for fixing unevenness (uneven density) of the gray area of an image: either due to optical (shading or CCD) or other problems.
Page 69 2AV/X Maintenance Description item No. U092 Adjusting the scanner automatically Description Makes auto scanner adjustments in the order below using the specified original. • Adjusting the scanner center line (U067) • Adjusting the scanner leading edge registration (U066) • Adjusting scanner magnification in the auxiliary direction (U065) When this maintenance item is performed, the settings in U065, U066 and U067 are also changed.
Page 70 2AV/X Maintenance Description item No. U093 Setting the exposure density gradient Description Changes the exposure density gradient in manual density mode, depending on respective image modes (text, text and photo, photo). Purpose To set how the image density is altered by a change of one step in the manual density adjustment. Also used to make copy image darker or lighter.
Page 71 2AV/X Maintenance Description item No. U099 Checking the original size detection Description Displays the original width detection data and sets the original width detection threshold. Purpose To check the original width detection. Also to change the original size detection threshold if the size of the original on the contact glass is detected incorrectly.
Page 72 2AV/X Maintenance Description item No. U100 Setting the surface potential Description Changes the surface potential by changing the grid control voltage. Also performs main charging. Purpose To set the surface potential or check main charging. Also used when reentering data after replacing the backup RAM or initializing the set data.
Page 73 2AV/X Maintenance Description item No. U101 Setting high voltages Description Changes the developing bias voltage and transfer voltage by changing the developing bias control voltage and transfer control voltage. Also checks the transfer output voltage. Purpose To check and change high voltages other than the main charger voltage. Start 1.
Page 74 2AV/X Maintenance Description item No. U109 Setting the drum type Description Sets or checks the drum type. Purpose To prevent variations in halftones due to differences in drum sensitivity. Method 1. Press the start key. The screen for selecting an item is displayed. 2.
Page 75 2AV/X Maintenance Description item No. U130 Initial setting for the developer Description Automatically sets the toner sensor control voltage and toner feed start level for the installed developer. Purpose To set the initial settings for the developer when installing the machine or replacing the developer. Caution Before performing the initial setting for the developer, remove the transfer roller (see page 1-6-45).
Page 76 2AV/X Maintenance Description item No. U132 Replenishing toner forcibly Description Replenishes toner forcibly until the toner sensor output value reaches the toner feed start level. Purpose Used when the toner empty is detected frequently. Method 1. Press the start key. The screen for executing is displayed. 2.
Page 77 2AV/X Maintenance Description item No. U156 Changing the toner control level Description Changes the toner feed start level set in maintenance item U130 or the toner empty level to be determined by the difference from the toner feed start level. Purpose To check the toner feed start level and toner empty level.
Page 78 2AV/X Maintenance Description item No. U158 Checking/clearing the developing count Description Displays the developing count for checking, clearing or changing a figure, which is used as a reference when correcting the toner control. It is automatically cleared when U130 is executed. Purpose To check the developing count after replacing the developer.
Page 79 2AV/X Maintenance Description item No. U162 Stabilizing fixing forcibly Description Stops the stabilization fixing drive forcibly, regardless of fixing temperature. Purpose To forcibly stabilize the machine before the fixing section reaches stabilization temperature. Method 1. Press the start key. The screen for executing is displayed. 2.
Page 80 2AV/X Maintenance Description item No. U200 Turning all LEDs on Description Turns all the LEDs on the operation panel on. Purpose To check if all the LEDs on the operation panel light. Method Press the start key. All the LEDs on the operation panel light. Press the stop/clear key or wait for 10 s.
Page 81 2AV/X Maintenance Description item No. U207 Checking the operation panel keys Description Checks operation of the operation panel keys. Purpose To check operation of all the keys and LEDs on the operation panel. Method 1. Press the start key. The screen for executing is displayed. 2.
Page 82 2AV/X Maintenance Description item No. U211 Completion Press the stop/clear key at the screen for selectiong an item. The screen for selectiong a maintenance item No. is displayed. U240 Checking the operation of finisher motors and solenoids Description Turns the motors and solenoids in the optional finisher on. Purpose To check the operation of the finisher motors and solenoids.
Page 83 2AV/X Maintenance Description item No. U243 Checking the operation of the DF motors, solenoids and clutch Description Turns the motors, solenoids or clutch in the optional SRDF on (when SRDF is installed). Turns the motors in the optional STDF on (when STDF is installed). Purpose To check the operation of the SRDF motors, solenoids and clutch (when SRDF is installed).
Page 84 2AV/X Maintenance Description item No. U244 Numerical Original width to be detected value × " " 49.664 50.176 61.440 61.952 × 103.936 " 14"/ × " 11" 104.448 Folio/A4R 139.264 139.776 146.432 B4/B5 146.994 197.120 × 197.632 11" 17"/ × ×...
Page 85 2AV/X Maintenance Description item No. U244 Checking the DF switches (when installing the optional STDF) Description Displays the status of the respective switches in the optional STDF. Purpose To check if respective switches in the optional STDF operate correctly. Start 1.
Page 86 2AV/X Maintenance Description item No. U250 Setting the maintenance cycle Description Displays and changes the maintenance cycle. Purpose To check and change the maintenance cycle. Method Press the start key. The current setting is displayed as follows: Maintenance cycle (number of copies) = setting × 1000 Setting 1.
Page 87 2AV/X Maintenance Description item No. U252 Setting the destination Description Switches the operations and screens of the machine according to the destination. Purpose To be executed after replacing the backup RAM on the main PCB or initializing the backup RAM by running maintenance item U020, in order to return the setting to the value before replacement or initialization.
Page 88 2AV/X Maintenance Description item No. U254 Turning auto start function on/off Description Selects if the auto start function is turned on. Purpose Normally no change is necessary. If incorrect operation occurs, turn the function off: this may solve the problem. Method Press the start key.
Page 89 2AV/X Maintenance Description item No. U256 Turning auto preheat/energy saver function on/off Description Selects if the auto preheat/energy saver function is turned on. When set to ON, the time to enter preheat/ energy saver mode can be changed in copy management mode. Purpose According to user request, to set the preheat time to save energy, or enable copying promptly without the recovery time from preheat mode.
Page 90 2AV/X Maintenance Description item No. U260 Changing the copy count timing Description Changes the copy count timing for the total counter and other counters. Purpose To be set according to user (copy service provider) request. If a paper jam occurs frequently in the finisher when the number of copies is counted at the time of paper ejection, copies are provided without copy counts.
Page 91 2AV/X Maintenance Description item No. U330 Setting the number of sheets to enter stacking mode during sort operation Description When sort copying is set to perform automatically in the output form setting of the user simulation, sets the number of sheets at which the eject location is switched to the optional finisher (only when the finisher is installed).
Page 92 2AV/X Maintenance Description item No. U342 Setting the ejection restriction Description Sets or cancels the restriction on the number of sheets to be ejected continuously when the internal eject tray is selected as the eject location. Purpose According to user request, sets or cancels restriction on the number of sheets. Method 1.
Page 93 2AV/X Maintenance Description item No. U344 Setting preheat/energy saver mode Description Changes the control for preheat/energy saver mode. Purpose According to user request, selects which has priority, the recovery time from preheat or energy saver. Method Press the start key. The screen for selecting an item is displayed. Setting 1.
Page 94 2AV/X Maintenance Description item No. U348 Setting the copy density adjustment range Description Selects the adjustment range for copy density from NORMAL and SPECIAL AREA (for wider range). Purpose To change the setting according to user request. When especially dark or light density is requested, set to SPECIAL AREA. Method Press the start key.
Page 95 2AV/X Maintenance Description item No. U404 Adjusting margins for scanning an original from the DF Description Adjusts margins for scanning the original from the DF. Purpose Used if margins are not correct when the optional DF is used. Caution Before making this adjustment, ensure that the following adjustments have been made in maintenance mode.
Page 96 2AV/X Maintenance Description item No. U407 Adjusting the leading edge registration for memory image printing Adjustment See page 1-6-12. U901 Checking/clearing copy counts by paper feed locations Description Displays or clears copy counts by paper feed locations. Purpose To check the time to replace consumable parts. Also to clear the counts after replacing the consumable parts.
Page 97 2AV/X Maintenance Description item No. U904 Checking/clearing the service call counts Description Displays or clears the service call code counts by types. Purpose To check the service call code status by types. Also to clear the service call code counts after replacing consumable parts.
Page 98 2AV/X Maintenance Description item No. U906 Resetting partial operation control Description Resets the service call code for partial operation control. Purpose To be reset after partial operation is performed due to problems in the drawers or other sections, and the related parts are serviced.
Page 99 2AV/X Maintenance Description item No. U914 Switching between fax and copier modes Description Selects whether the fax or copier mode is given priority when the optional facsimile kit is installed to use the copier as a fax. Purpose To select the mode that is used more frequently by the user. Method Press the start key.
Page 100 2AV/X Maintenance Description item No. U992 Checking or clearing the printer/fax count Description Displays, clears or changes the print count of the printer or fax when the optional printer board or fax unit is installed. Purpose To check the frequency of use of the printer or fax. Method Press the start key.
Page 101 2AV/X Maintenance Description item No. U998 Outptting the memory list Description Outputs the list of memory. Purpose To output the list as required. Method 1. Press the start key. The screen for selecting an item is displayed. 2. Enter the six digits of address using the numeric keys. To enter alphabets, press the keys shown below as required.
Page 102: Maintenance Mode Item List (For 15 Cpm Copier)
2AV/X (4) Maintenance mode item list (for 15 cpm copier) Item Initial Section Maintenance item contents setting* General U000 Outputting an own-status report — U001 Exiting the maintenance mode — U004 Setting the machine number — U005 Copying without paper —...
Page 103 2AV/X Item Initial Section Maintenance item contents setting* High voltage U100 Setting the surface potential U101 Setting high voltages • Developing bias 193/38 • Transfer voltage • Transfer voltage output timing –176 U109 Setting the drum type U110 Checking/clearing the drum count —...
Page 104 2AV/X Item Initial Section Maintenance item contents setting* Image U402 Adjusting margins of image printing — processing U403 Adjusting margins for scanning an original on the contact glass — U404 Adjusting margins for scanning an original from the DF — U407 Adjusting the leading edge registration for memory image printing —...
Page 105: Contents Of Maintenance Mode Items (For 15 Cpm Copier)
2AV/X (5) Contents of maintenance mode items (for 15 cpm copier) Maintenance Description item No. U000 Outputting an own-status report Description Outputs lists of the current settings of the maintenance items, and paper jam and service call occurrences. Purpose To check the current setting of the maintenance items, or paper jam or service call occurrences. Before initializing the backup RAM, output a list of the current settings of the maintenance items to reenter the settings after initialization or replacement.
Page 106 2AV/X Maintenance Description item No. U005 Copying without paper Description Simulates the copy operation without paper feed. Purpose To check the overall operation of the machine. Method 1. Press the start key. A selection item appears. 2. Select the item to be operated using the copy exposure adjustment keys. Display Operation Only the copier operates.
Page 107 2AV/X Maintenance Description item No. U021 Initializing memories Description Initializes the setting data other than that for adjustments due to variations between respective machines, i.e., settings for counters, service call history and mode settings. As a result, initializes the backup RAM according to the specifications depending on the destination selected in U252.
Page 108 2AV/X Maintenance Description item No. U031 Checking switches for paper conveying Description Displays the on-off status of each paper detection switch on the paper path. Purpose To check if the switches for paper conveying operate correctly. Method 1. Press the start key. 2.
Page 109: Gear
2AV/X Maintenance Description item No. U033 Checking solenoid operation Description Turns each solenoid on. Purpose To check the operation of each solenoid. Method 1. Press the start key. A selection item appears. 2. Select the desired operation using the copy exposure adjustment keys. 3.
Page 110 2AV/X Maintenance Description item No. U053 Performing fine adjustment of the motor speed Description Performs fine adjustment of the speeds of the motors. Purpose Used to adjust the speed of the respective motors when the magnification is not correct. Method Press the start key.
Page 111 2AV/X Maintenance Description item No. U060 Adjusting the scanner input properties Description Adjusts the image scanning density. Purpose Used when the entire image appears too dark or light. Method Press the start key. Setting 1. Change the setting using the zoom +/– keys. Description Setting range Initial setting...
Page 112 2AV/X Maintenance Description item No. U065 Adjusting the scanner magnification Adjustment See pages 1-6-32 and 34. U066 Adjusting the leading edge registration for scanning an original on the contact glass Adjustment See page 1-6-36. U067 Adjusting the center line for scanning an original on the contact glass Adjustment See page 1-6-37.
Page 113 2AV/X Maintenance Description item No. U071 Adjusting the DF scanning timing Description Adjusts the DF original scanning timing. Purpose To be executed if there is a regular error between the leading or trailing edges of the original and the copy image when the optional DF is used.
Page 114 2AV/X Maintenance Description item No. U072 Adjusting the DF center line Description Adjusts the scanning start position for the DF original. Purpose To be executed if there is a regular error between the centers of the original and the copy image when the optional DF is used.
Page 115 2AV/X Maintenance Description item No. U073 Checking scanner operation Description Simulates the scanner operation under arbitrary conditions. Purpose To check scanner operation. Method 1. Press the start key. 2. Select the item to be changed by lighting a copy exposure indicator using the copy exposure adjustment keys.
Page 116 2AV/X Maintenance Description item No. U075 Setting the original size detection Description Sets whether or not to detect the original size automatically using the original size detection sensor (OSDS). Purpose On the metric specifications of the European models, set to “on” when an optional original size detection sensor is installed.
Page 117 2AV/X Maintenance Description item No. U087 Turning the DF scanning position adjust mode on/off Description Turns on or off the DF scanning position adjust mode, in which the DF original scanning position is adjusted automatically by determining the presence or absence of dust on the slit glass. Also changes the reference data for identifying dust.
Page 118 2AV/X Maintenance Description item No. U088 Setting the input filter (moiré reduction mode) Description Turns moiré reduction mode on and off by switching the input filter on and off. Purpose Used to prevent regular density unevenness (moiré) on halftone image areas of the copy image in text mode and text and photo mode.
Page 119 2AV/X Maintenance Description item No. U091 3. Press the start key. Scanning is performed under the selected conditions and the result is displayed. (cont.) 4. Change the measurement point by lighting a copy exposure indicator or making one flash using the copy exposure adjustment keys.
Page 120 2AV/X Maintenance Description item No. U092 Adjusting the scanner automatically Description Makes auto scanner adjustments in the order below using the specified original. • Adjusting the scanner center line (U067) • Adjusting the scanner leading edge registration (U066) • Adjusting scanner magnification in the auxiliary direction (U065) When this maintenance item is performed, the settings in U065, U066 and U067 are also changed.
Page 121 2AV/X Maintenance Description item No. U093 Setting the exposure density gradient Description Changes the exposure density gradient in manual density mode, depending on respective image modes (text, text and photo, photo). Purpose To set how the image density is altered by a change of one step in the manual density adjustment. Also used to make copy image darker or lighter.
Page 122 2AV/X Maintenance Description item No. U093 Setting (cont.) 1. Select the item to be adjusted by lighting a copy exposure indicator using the copy exposure adjustment keys. 2. Adjust the setting using the zoom +/– keys. Copy exposure Description Setting range Initial setting indicator Exp.
Page 123 2AV/X Maintenance Description item No. U099 Checking the original size detection Description Displays the original width detection data and sets the original width detection threshold. Purpose To check the original width detection. Also to change the original size detection threshold if the size of the original on the contact glass is detected incorrectly.
Page 124 2AV/X Maintenance Description item No. U099 Method to set or check the original size detection threshold (cont.) 1. Place an original on the contact glass and turn the original detection switch on. The original size detection starts and detection data is displayed. 2.
Page 125 2AV/X Maintenance Description item No. U100 Setting the surface potential Description Changes the surface potential by changing the grid control voltage. Also performs main charging. Purpose To set the surface potential or check main charging. Also used when reentering data after initializing the set data.
Page 126 2AV/X Maintenance Description item No. U101 Setting high voltages Description Changes the developing bias voltage and transfer voltage by changing the developing bias control voltage and transfer control voltage. Also checks the transfer output voltage. Purpose To check and change high voltages other than the main charger voltage. Start 1.
Page 127 2AV/X Maintenance Description item No. U109 Setting the drum type Description Sets the type of the drum installed in the copier. Purpose To prevent variations in halftone due to differences in drum sensitivity. Method Press the start key. Setting 1. Select the drum type using the zoom +/– keys. Display Description Type G...
Page 128 2AV/X Maintenance Description item No. U111 Checking/clearing the drum drive time Description Displays the drum drive time for checking, clearing or changing a figure, which is used as a reference when correcting the high voltage based on time. Purpose To check the drum status. Also used to clear the drive time after replacing the drum. Method 1.
Page 129 2AV/X Maintenance Description item No. U131 Setting the toner sensor control voltage Description Displays or changes the toner sensor control voltage automatically set in maintenance item U130. Purpose To check the automatically set toner sensor control voltage. Also to change the toner density if an image is too dark or light.
Page 130 2AV/X Maintenance Description item No. U155 Displaying the toner sensor output Description Displays the toner sensor output value, and related data. Purpose To check the toner sensor output value. Method 1. Press the start key. 2. Press the start key. Sampling starts. 3.
Page 131 2AV/X Maintenance Description item No. U157 Checking/clearing the developing drive time Description Displays the developing drive time for checking, clearing or changing a figure, which is used as a reference when correcting the toner control. It is automatically cleared when U130 is executed. Purpose To check the developing drive time after replacing the developer.
Page 132 2AV/X Maintenance Description item No. U161 Setting the fixing control temperature Description Changes the fixing control temperature. Purpose Normally no change is necessary. However, can be used to prevent curling or creasing of paper, or solve a fixing problem on thick paper. Method Press the start key.
Page 133 2AV/X Maintenance Description item No. U196 Turning the fixing heater on Description Turns the fixing heater on. Purpose To check fixing heater. Method 1. Press the start key. “on” appears. 2. Press the start key. The fixing heater turns on for 1 s and then turns off. Completion Press the stop/clear key when fixing heater is off.
Page 134 2AV/X Maintenance Description item No. U204 Setting the presence or absence of a key card or key counter Description Sets the presence or absence of the optional key card or key counter. Purpose It is not necessary to run this maintenance item if a key card is installed on a 120 V specification machine. A key card is not available for 220 –...
Page 135 2AV/X Maintenance Description item No. U244 Checking the DF switches Description Displays the status of the switches in the optional DF. Purpose To check if switches in the optional DF operate correctly. Method 1. Press the start key. 2. Manually turn on and off each switch to check the status. When the on-status of a switch is detected, the original size indicator or other LED corresponding to the operated switch on the operation panel lights.
Page 136 2AV/X Maintenance Description item No. U251 Checking/clearing the maintenance count Description Displays, clears and changes the maintenance count. Purpose To check the maintenance count. Also to clear the count during maintenance service. Method 1. Press the start key. 2. Select the item by lighting a copy exposure indicator using the copy exposure adjustment keys. Copy exposure indicator Description Setting range Initial setting...
Page 137 2AV/X Maintenance Description item No. U253 Switching between double and single counts Description Switches the count system for the total counter and other counters. Purpose According to user (copy service provider) request, select if A3/11" × 17" paper is to be counted as one sheet (single count) or two sheets (double count).
Page 138 2AV/X Maintenance Description item No. U255 Setting auto clear time Description Sets the time to return to initial settings after copying is complete. Purpose To be set according to frequency of use. Set to a comparatively long time for continuous copying at the same settings, and a comparatively short time for frequent copying at various settings.
Page 139 2AV/X Maintenance Description item No. U258 Switching copy operation at toner empty detection Description Selects if continuous copying is enabled after toner empty is detected, and sets the number of copies that can be made after the detection. Method Press the start key. The current setting is displayed. Start 1.
Page 140 2AV/X Maintenance Description item No. U260 Changing the copy count timing Description Changes the copy count timing for the total counter and other counters. Purpose To be set according to user (copy service provider) request. If a paper jam occurs frequently in the eject section when the number of copies is counted at the time of paper ejection, copies are provided without copy counts.
Page 141 2AV/X Maintenance Description item No. U332 Setting the size conversion factor Description Sets the factor for converting each paper size into A4/11" × 8 ". The black ratio is converted for the A4/ 11" × 8 " size using the factor set in this maintenance item. Values set are displayed in the user simulation. Purpose To set the factor to convert the black ratio of each paper size for A4/11"...
Page 142 2AV/X Maintenance Description item No. U342 Setting the ejection restriction Description Sets or cancels the restriction on the number of sheets to be ejected continuously when the internal eject tray is selected as the eject location. When the restriction is set, the number of sheets that can be ejected continuously to the internal eject tray will be limited as shown below.
Page 143 2AV/X Maintenance Description item No. U344 Setting preheat/energy saver mode Description Changes the control for preheat/energy saver mode. Purpose According to user request, selects which has priority, the recovery time from preheat or energy saver. Method Press the start key. Setting 1.
Page 144 2AV/X Maintenance Description item No. U348 Setting the copy density adjustment range Description Selects the adjustment range for copy density from NORMAL and SPECIAL AREA (for wider range). Purpose To change the setting according to user request. When especially dark or light density is requested, set to SPECIAL AREA. Method Press the start key.
Page 145 2AV/X Maintenance Description item No. U404 DF leading edge margin (3 ± 2.5 mm) (cont.) Ejection direction (reference) DF left margin DF right margin +1.5 +1.5 (2.5 (2.5 –2.0 –2.0 DF trailing edge margin (3 ± 2.5 mm) Figure 1-4-14 Correct margin amount 3.
Page 146 2AV/X Maintenance Description item No. U901 Checking/clearing copy counts by paper feed locations Description Displays or clears copy counts by paper feed locations. Purpose To check the time to replace consumable parts. Also to clear the counts after replacing the consumable parts. Method 1.
Page 147 2AV/X Maintenance Description item No. U903 Checking/clearing the paper jam counts Description Displays or clears the jam counts by jam locations. Purpose To check the paper jam status. Also to clear the jam counts after replacing consumable parts. Method 1. Press the start key. 2.
Page 148 2AV/X Maintenance Description item No. U905 Checking/clearing counts by optional devices Description Displays or clears the counts of the optional DF. Purpose To check the use of the DF. Also to clear the counts after replacing consumable parts. Method 1. Press the start key. 2.
Page 149 2AV/X Maintenance Description item No. U910 Clearing the black ratio data Description Clears the accumulated black ratio data for A4/11" × 8 " sheets. Purpose To clear data as required at times such as during maintenance service. Method 1. Press the start key. 2.
Page 150 2AV/X Maintenance Description item No. U990 Checking/clearing the time for the exposure lamp to light Description Displays or clears the accumulated time for the exposure lamp to light. Purpose To check duration of use of the exposure lamp. Also to clear the accumulated time for the lamp after replacement.
Page 151 2AV/X Maintenance Description item No. U993 Outputting a VTC-PG pattern Description Selects and outputs a VTC-PG pattern created in the copier. Purpose When performing respective image printing adjustments, used to check the machine status apart from that of the scanner with a non-scanned output VTC-PG pattern. Method 1.
Page 152 2AV/X Maintenance Description item No. U998 Outputting the memory list Description Outputs the list of memory. Purpose To output the list as required. Method Press the start key. Entering the address 1. Select the item by lighting a copy exposure indicator using the copy exposure adjustment keys. Copy exposure indicator Description Setting range...
Page 153: Paper Misfeed Detection
2AV/X 1-5-1 Paper misfeed detection (1) Paper misfeed indication When a paper misfeed occurs, the copier immediately stops copying and displays the jam location on the operation panel. Paper misfeed counts sorted by the detection condition can be checked in maintenance item U903. To remove paper jammed in the copier, open the front cover, paper conveying unit or drawer.
Page 154 2AV/X Jam code Contents See pape No paper feed from copier upper drawer P.1-5-4 No paper feed from copier lower drawer P.1-5-4 No paper feed from first optional drawer P.1-5-4 No paper feed from second optional drawer P.1-5-4 No paper feed from bypass P.1-5-4 Misfeed in copier vertical paper conveying section P.1-5-5...
Page 155: Paper Misfeed Detection Conditions
2AV/X (2) Paper misfeed detection conditions DFSW DFSW (ST) 1 Figure 1-5-3 1-5-3...
Page 156 2AV/X 1. Jam at power-on • One or more of the switches in the paper feed conveying system is on when the main switch is turned on (jam code 00). 2. Paper feed section • No paper feed from copier upper drawer (jam code 10) The registration switch (RSW) does not turn on within 980 ms of the upper paper feed clutch (PFCL-U) turning on.
Page 157 2AV/X • Misfeed in copier vertical paper conveying section (jam code 15) The registration switch (RSW) does not turn on within 3200 ms of the drawer feed switch* (DFSW) turning on (when paper is fed from optional drawer 1). DFSW* 3200 ms Timing chart 1-5-6 •...
Page 158 2AV/X Drawer feed switch (ST) 1* (DFSW (ST) 1) does not turn off within the time required to convey the length of the used paper size plus 2000 ms of turning on (when paper is fed from optional drawer 2). DFSW (ST) 1* Paper size + 2000 ms Timing chart 1-5-11...
Page 159 2AV/X 5. Eject section • Misfeed in eject section The eject switch (ESW) does not turn off within 2475 ms of the registration switch (RSW) turning off. 2475 ms Timing chart 1-5-16 1-5-7...
Page 160: Paper Misfeeds
2AV/X (3) Paper misfeeds Problem Causes/check procedures Corrective measures A piece of paper torn from Check visually and remove any found. A paper jam in the copy paper is caught paper feed, around the registration conveying, fixing or switch, the drawer feed eject section is switch* , drawer feed switch...
Page 161 2AV/X Problem Causes/check procedures Corrective measures Paper in optional drawer Change the paper. A paper jam in the is extremely curled. paper feed section Check if the paper feed Check visually and replace the pulleys if deformed. is indicated during pulleys of optional drawer copying (no paper are deformed.
Page 162 2AV/X Problem Causes/check procedures Corrective measures Broken drawer feed Check visually and replace the drawer feed switch* if its A paper jam in the switch* actuator. actuator is broken. paper feed section Defective drawer feed With 5 V DC present at CN8-21 on the main PCB, check if CN8- is indicated during switch* 23 on the main PCB remains low when the drawer feed switch*...
Page 163 2AV/X Problem Causes/check procedures Corrective measures (10) Broken drawer feed Check visually and replace the drawer feed switch* if its A paper jam in the switch* actuator. actuator is broken. paper feed section Defective drawer feed With 5 V DC present at CN8-21 on the main PCB, check if CN8- is indicated during switch* 23 on the main PCB remains low when the drawer feed switch*...
Page 164: Self-Diagnosis
2AV/X 1-5-2 Self-diagnosis (1) Self-diagnostic function This unit is equipped with a self-diagnostic function. When a problem is detected, copying is disabled. On the 20 cpm copier, the problem is displayed as a code consisting of "C" followed by a number between 011 and 821, indicating the nature of the problem.
Page 165: Gear
2AV/X Remarks Code Contents Causes Check procedures/corrective measures C100 Exposure lamp problem Poor contact of Check the connection of connectors CN24, • Check the CCD input value for the the connector CN23, CN22 and CN3 on the main PCB, lighting status of the exposure lamp terminals.
Page 166 2AV/X Remarks Code Contents Causes Check procedures/corrective measures C401 Polygon motor steady-state problem Poor contact of Reinsert the connector. Also check for • The polygon motor rotation is not the polygon motor continuity within the connector cable. If stable for 400 ms after the polygon connector none, repair or replace the cable.
Page 167 2AV/X Remarks Code Contents Causes Check procedures/corrective measures C620 Abnormally low fixing unit Fixing heater Check and reinstall if necessary. thermistor temperature installed • The fixing temperature remains below incorrectly. 100˚C/212˚F for 10 s during copying. Broken fixing Check for continuity. If none, replace fixing heater wire.
Page 168 2AV/X Remarks Code Contents Causes Check procedures/corrective measures C731 Short-circuited external temperature Poor contact of Reinsert the connector. Also check for thermistor the humidity continuity within the connector cable. If • The input voltage is below 0.5 V. sensor PCB none, repair or replace the cable.
Page 169: Image Formation Problems
2AV/X 1-5-3 Image formation problems (1) No image appears (2) No image appears (3) Image is too light. (4) Background is visible. (entirely white). (entirely black). See page 1-5-18 See page 1-5-18 See page 1-5-19 See page 1-5-19 (8) One side of the copy (5) A white line appears (7) A black line appears (6) A black line appears...
Page 170 2AV/X (1) No image appears Causes (entirely white). 1. No transfer charging. Causes Check procedures/corrective measures 1. No transfer charging. A. Broken transfer wire. Replace or repair the wire. B. The connector terminals of the high-voltage Reinsert the connector. Also check for continuity within the transformer PCB make poor contact.
Page 171 2AV/X (3) Image is too Causes light. 1. Insufficient toner. 2. Deteriorated developer. 3. Dirty or deteriorated drum. Causes Check procedures/corrective measures 1. Insufficient toner. If the display shows the message requesting toner replenishment, replace the cartridge. 2. Deteriorated developer. Check the number of copies made with the current developer.
Page 172 2AV/X (6) A black line appears Causes longitudinally. 1. Dirty contact glass. 2. Dirty or flawed drum. 3. Deformed or worn cleaning blade. 4. Dirty scanner mirror. Causes Check procedures/corrective measures 1. Dirty contact glass. Clean the contact glass. 2. Dirty or flawed drum. Clean the drum or, if it is flawed, replace it (see page 1-6-43).
Page 173: Gear
2AV/X (9) Black dots appear Causes on the image. 1. Dirty or flawed drum. 2. Dirty contact glass. 3. Deformed or worn cleaning blade. Causes Check procedures/corrective measures 1. Dirty or flawed drum. Clean the drum or, if it is flawed, replace it (see page 1-6-43). 2.
Page 174 2AV/X (12) The leading edge of Causes the image is sporadi- 1. Registration clutch, bypass paper feed clutch cally misaligned with or paper feed clutch installed or operating the original. incorrectly. Causes Check procedures/corrective measures 1. Registration clutch, bypass paper feed clutch Check the installation position and operation of the registration or paper feed clutch installed or operating clutch, bypass paper feed clutch and paper feed clutches.
Page 175 2AV/X Causes (15) Image is partly miss- 1. Paper damp. ing. 2. Paper creased. 3. Drum condensation. 4. Flawed drum. Causes Check procedures/corrective measures 1. Paper damp. Check the paper storage conditions. 2. Paper creased. Replace the paper. 3. Drum condensation. Clean the drum.
Page 176 2AV/X (19) Image is not Causes square. 1. Laser scanner unit positioned incorrectly. 2. Image scanning unit positioned incorrectly. Causes Check procedures/corrective measures 1. Laser scanner unit positioned incorrectly. Adjust the installation position of the laser scanner unit (see page 1-6-26). 2.
Page 177: Electrical Problems
2AV/X 1-5-4 Electrical problems Problem Causes Check procedures/corrective measures No electricity at the power Measure the input voltage. The machine does outlet. not operate when The power cord is not Check the contact between the power plug and the outlet. the main switch is plugged in properly.
Page 178: The Drawer Drive Motor Does Not Operate
2AV/X Problem Causes Check procedures/corrective measures Broken cooling fan motor 3 Check for continuity across the coil. If none, replace cooling fan Cooling fan motor 3 coil. motor 3. does not operate. Poor contact in the cooling Reinsert the connector. Also check for continuity within the fan motor 3 connector connector cable.
Page 179: The Exposure Lamp Does Not Turn On
2AV/X Problem Causes Check procedures/corrective measures (16) Poor contact in the Reinsert the connector. Also check for continuity within the The exposure lamp exposure lamp connector connector cable. If none, remedy or replace the cable. does not turn on. terminals. Defective inverter PCB.
Page 180: The Original Size Is Not Detected
2AV/X Problem Causes Check procedures/corrective measures (24) Original is not placed Check the original and correct if necessary. The original size is correctly. not detected Poor contact in the original Reinsert the connector. Also check for continuity within the correctly. size detection sensor connector cable.
Page 181: In The Lower Drawer
2AV/X Problem Causes Check procedures/corrective measures (28) Poor contact in upper Reinsert the connector. Also check for continuity within the The size of paper in paper size switch 4 connector cable. If none, remedy or replace the cable. the upper drawer is connector terminals.
Page 182: Mechanical Problems
2AV/X 1-5-5 Mechanical problems Problem Causes/check procedures Corrective measures Check if the surfaces of the following pulleys Clean with isopropyl alcohol. No primary paper feed. are dirty with paper powder: upper paper feed pulleys, lower paper feed pulleys* and bypass paper feed pulleys. Check if the paper feed pulleys are Check visually and replace any deformed deformed.
Page 183: Precautions For Assembly And Disassembly
2AV/X 1-6-1 Precautions for assembly and disassembly (1) Precautions • Be sure to turn the main switch off and disconnect the power plug before starting disassembly. • When handling PCBs, do not touch connectors with bare hands or damage the board. •...
Page 184: Running A Maintenance Item
2AV/X (2) Running a maintenance item Start Enter “10871087” using Maintenance mode is entered. the numeric keys. Enter the maintenance item number using the cursor up/down keys The maintenance item is (20 cpm), the zoom +/– keys (15 cpm) selected. or numeric keys.
Page 185: Paper Feed Section
2AV/X 1-6-2 Paper feed section (1) Detaching and refitting the upper and lower paper feed pulleys Follow the procedure below to replace the paper feed pulleys. Procedure • Upper paper feed pulleys 1. Open the bypass tray and paper conveying unit and then remove the rear and rear left covers.
Page 186 2AV/X 6. Open the front cover and remove the image Stop ring formation unit (see page 1-6-40). 7. Remove the stop ring from the paper feed shaft unit (machine front). Figure 1-6-4 8. Push the paper feed shaft unit toward the machine rear (in the direction of 1) and remove the unit from the lower front side (in the direction of 2).
Page 187 2AV/X • Lower peper feed pulleys (optional for the 15 cpm copier) 1. Open the lower drawer left cover and pull the Drawer drive motor lower drawer out. 2. Remove the two screws holding the rear cover of the lower drawer and then the cover. 3.
Page 188: Detaching And Refitting The Bypass Paper Feed Pulley
2AV/X (2) Detaching and refitting the bypass paper feed pulley Follow the procedure below to replace the bypass paper feed pulley. Procedure 1. Open the bypass tray, paper conveying unit and front cover and then remove the image formation unit (see page 1-6-40). 2.
Page 189 2AV/X 5. Remove the rear screw of the bypass paper feed pulley and then the pulley. Bypass paper feed pulley Figure 1-6-12 6. Replace the bypass paper feed pulley and refit all the removed parts. • When refitting, check that the cam on the rear of the shaft is correctly positioned (see figure 1-6-13).
Page 190: Detaching And Refitting The Left Registration Cleaner Assembly
2AV/X (3) Detaching and refitting the left registration cleaner assembly Follow the procedure below to replace the left registration cleaner assembley. Procedure Left registration roller 1. Open the bypass tray and paper conveying unit. 2. Remove the transfer roller unit (see page 1-6- 47).
Page 191: Detaching And Refitting The Bypass Paper Width Switch
2AV/X (5) Detaching and refitting the bypass paper width switch Follow the procedure below to replace the bypass paper width switch. Procedure 1. Remove the paper conveying unit and lower left cover (see page 1-6-6). 2. Remove the bypass tray assembly. 3.
Page 192: Adjustment After Roller And Clutch Replacement
2AV/X (6) Adjustment after roller and clutch replacement Perform the following adjustment after refitting rollers and clutches. (6-1) Adjusting the leading edge registration of image printing Make the following adjustment if there is a regular error between the leading edges of the copy image and original. U066 U071 U034...
Page 193 2AV/X • 15 cpm Leading edge registration Start Correct image Output Output example 1 example 2 Enter maintenance mode. Figure 1-6-19b Photo G Image mode selection key Text Enter “034” using the numeric keys. Text indicator : Leading edge registration adjustment is on Press the start key.
Page 194: Adjusting The Leading Edge Registration For Memory Image Printing
2AV/X (6-2) Adjusting the leading edge registration for memory image printing Make the following adjustment if there is a regular error between the leading edge of the copy image and the leading edge of the original during memory copying. U066 U053 U034 U065...
Page 195: Adjusting The Center Line Of Image Printing
2AV/X (6-3) Adjusting the center line of image printing Make the following adjustment if there is a regular error between the center lines of the copy image and original when paper is fed from the drawer. U067 U072 U034 (P. 1-6-37) (P.
Page 196 2AV/X • 15 cpm Center line of printing Correct image Output Output example 1 example 2 Start Figure 1-6-21b Enter maintenance mode. Enter “034” using the numeric keys. Photo G Image mode selection key Text Photo and text indicators : Center line adjustment Press the start key.
Page 197: Adjusting The Margins For Printing
2AV/X (6-4) Adjusting the margins for printing Make the following adjustment if the margins are not correct. U403 U404 U402 (P. 1-6-38) (P. 1-4-46) Caution: Check the copy image after the adjustment. If the margins are still incorrect, perform the above adjustments in maintenance mode.
Page 198 2AV/X • 15 cpm Start Enter maintenance mode. Enter “402” using the numeric keys. G Copy exposure adjustment keys Press the start key. Setting 1 : printer leading edge margin 2 : printer left/right margins 3 : printer trailing edge margin (standard size) Select the item to be adjusted using 4 : printer trailing edge margin...
Page 199: Adjusting The Amount Of Slack In The Paper
2AV/X (6-5) Adjusting the amount of slack in the paper Make the following adjustment if the leading edge of the copy image is missing or varies randomly, or if the copy paper is Z-folded. Procedure • 20 cpm Start Original Copy Copy example 1...
Page 200 2AV/X • 15 cpm Original Copy Copy example 1 example 2 Figure 1-6-22b Start Enter maintenance mode. G Image mode G Image mode Photo Photo selection key selection key Text Text Enter “051” using the numeric keys. Text indicator : Amount of slack at the Photo and Text : Amount of slack at is on...
Page 201: Optical Section
2AV/X 1-6-3 Optical section (1) Detaching and refitting the exposure lamp Replace the exposure lamp as follows. Procedure 1. Remove the original cover or the DF. Contact glass 2. Remove the five screws holding the right cover. While sliding the right cover in the direction of the arrow in the diagram, remove the contact glass.
Page 202: Detaching And Refitting The Scanner Wires
2AV/X (2) Detaching and refitting the scanner wires Take the following procedure when the scanner wires are broken or to be replaced. Caution: After replacing the scanner wires, proceed to (4-1) Adjusting the skew of the laser scanner unit (see page 1-6-26) and (6) Adjusting the position of the ISU (see page 1-6-30).
Page 203: Fitting The Scanner Wires
2AV/X (2-2) Fitting the scanner wires Caution: When fitting the wires, be sure to use those specified below. Machine front: P/N 2AV1219 (black) Machine rear: P/N 2AV1220 (gray) Fitting requires the following tools: Two frame securing tools (P/N 2AV6808) Two scanner wire stoppers (P/N 3596811) Procedure Scanner motor unit 1.
Page 204 2AV/X 4. Insert the locating ball on each of the scanner wires into the hole in the respective scanner wire drum and wind the scanner wire three turns inward and four turns outward. • With the locating ball as the reference point, Scanner wire stoppers wind the shorter end of each of the wires inward.
Page 205 2AV/X 8. Loop the inner ends of the scanner wires around the grooves in the pulleys at the right of the scanner unit, winding from below to above.......................... 1 9. Loop the scanner wires around the inner grooves in the pulleys on the mirror 2 frame, winding from above to below.
Page 206: Detaching And Refitting The Laser Scanner Unit
2AV/X (3) Detaching and refitting the laser scanner unit Take the following procedure when the laser scanner unit is to be checked or replaced. Procedure 1. Open the front cover. 2. Remove the two screws holding the eject tray and then the tray. Eject tray Figure 1-6-35 3.
Page 207 2AV/X 5. Check or replace the laser scanner unit and LSU front spacer refit all the removed parts. Caution: Before fitting the new laser scanner unit, fit the LSU front spacer and LSU right spacer by orienting the markings correctly and using the correct layer as specified on the label on the laser scanner unit cover.
Page 208: Adjusting The Skew And Vertical Shifting Of The Laser Scanner Unit
2AV/X (4) Adjusting the skew and vertical shifting of the laser scanner unit (4-1) Adjusting the skew of the laser scanner unit Perform the following adjustment if the leading and trailing edges of the copy image are laterally skewed (lateral squareness not obtained).
Page 209: Adjusting The Vertical Shifting Of The Laser Scanner Unit
2AV/X (4-2) Adjusting the vertical shifting of the laser scanner unit Perform the following adjustment if the copy image shifts vertically due to vertical shifting of the position of the laser scanner unit. Vertical shifting : X (mm) Start Enter maintenance mode. Copy Copy Correct image...
Page 210: Detaching And Refitting The Isu (Reference)
2AV/X (5) Detaching and refitting the ISU (reference) Take the following procedure when the ISU is to be checked or replaced. Caution: After fitting the ISU, proceed to (6) Adjusting the position of the ISU (see page 1-6-30). ISU installation requires the following tools: Two positioning pins (P/N 1856812) Procedure •...
Page 211 2AV/X • Refitting the ISU 1. Fit the ISU using the two positioning pins. Positioning pins 2. Secure the ISU using the four screws. 3. Remove the two positioning pins and refit all the removed parts. Figure 1-6-44 1-6-29...
Page 212: Adjusting The Position Of The Isu (Reference)
2AV/X (6) Adjusting the position of the ISU (reference) Perform the following adjustment if the leading and trailing edges of the copy image are laterally skewed (lateral squareness not obtained). Caution: • Be sure to perform “(4-1) Adjusting the skew of the laser scanner unit” (page 1-6-26) first. •...
Page 213: Adjusting The Longitudinal Squareness (Reference)
2AV/X (7) Adjusting the longitudinal squareness (reference) Perform the following adjustment if the copy image is longitudinally skewed (longitudinal squareness not obtained). Caution: • Adjust the amount of slack in the paper (page 1-6-17) first. Check for the longitudinal squareness of the copy image, and if it is not obtained, perform the longitudinal squareness adjustment.
Page 214: Adjusting Magnification Of The Scanner In The Main Scanning Direction
2AV/X (8) Adjusting magnification of the scanner in the main scanning direction Perform the following adjustment if the magnification in the main scanning direction is not correct. U065 U065 U053 U067 (main scanning (auxiliary scanning (P. 1-4-11) (P. 1-6-37) direction) (P. 1-6-34) direction) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode.
Page 215 2AV/X • 15 cpm Start Copy Original Copy Enter maintenance mode. example 2 example Figure 1-6-49b Enter “065” using the numeric keys. Press the start key. Select “1” (main scanning direction G Copy exposure adjustment keys using the copy exposure Setting 1 : Main scanning direction adjustment keys).
Page 216: Adjusting Magnification Of The Scanner In The Auxiliary Scanning Direction
2AV/X (9) Adjusting magnification of the scanner in the auxiliary scanning direction Perform the following adjustment if the magnification in the auxiliary scanning direction is not correct. U065 U065 U053 U070 (main scanning (auxiliary scanning (P. 1-4-11) (P. 1-4-14) direction) (P. 1-6-32) direction) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode.
Page 217 2AV/X • 15 cpm Start Copy Original Copy example 2 Enter maintenance mode. example 1 Figure 1-6-50b Enter “065” using the numeric keys. Press the start key. G Copy exposure adjustment keys Select “2” (auxiliary scanning direction using the copy exposure Setting 1 : Main scanning direction adjustment keys).
Page 218: Adjusting The Scanner Leading Edge Registration
2AV/X (10) Adjusting the scanner leading edge registration Perform the following adjustment if there is regular error between the leading edges of the copy image and original. U034 U071 U066 (P. 1-6-10) (P. 1-4-14) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode. Procedure Scanner leading edge registration Start...
Page 219: Adjusting The Scanner Center Line
2AV/X (11)Adjusting the scanner center line Perform the following adjustment if there is a regular error between the center lines of the copy image and original. U034 U071 U067 (P. 1-6-10) (P. 1-4-14) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode. Procedure Scanner center line Start...
Page 220: Adjusting The Margins For Scanning An Original On The Contact Glass
2AV/X (12) Adjusting the margins for scanning an original on the contact glass Perform the following adjustment if the margins are not correct. U402 U404 U403 (P. 1-6-15) (P. 1-4-46) Caution: Before making the following adjustment, ensure that the above adjustments have been made in maintenance mode. Procedure •...
Page 221 2AV/X • 15 cpm Start Enter maintenance mode. Enter “403” using the numeric keys. Press the start key. G Copy exposure adjustment keys Setting 1 : scanner left margin 2 : scanner leading edge margin Select the item to be adjusted using 3 : scanner right margin the copy exposure adjustment keys.
Page 222: Main Charging Section
2AV/X 1-6-4 Main charging section (1) Detaching and refitting the charger assembly Follow the procedure below to replace the charger assembly. Prucedure 1. Open the bypass tray, paper conveying unit Connector and front cover, and then remove the toner cartridge and waste toner tank. Hook 2.
Page 223: Replacing The Tungsten Wire (Reference)
2AV/X (2) Replacing the tungsten wire (reference) Take the following procedure when the tungsten wire is broken or to be replaced. Precautions • Use the specified tungsten wire (P/N: 2AR1016). • The part of the wire wrapped around the charger spring must not protrude over the L-shaped hook in the main charger rear housing.
Page 224 2AV/X 6. Wind the new tungsten wire six turns around one end of the charger spring and trim the end. • The width of the coiled tungsten wire and the cut end must be less than 2 mm. 7. Hook the other end of the charger spring onto the charger terminal of the main charger rear housing. 8.
Page 225: Drum Section
2AV/X 1-6-5 Drum section (1) Detaching and refitting the drum Follow the procedure below to replace the drum. Cautions: • Avoid direct sunlight or strong light when detaching and fitting the drum. • Hold the drum at the ends and never touch the drum surface. •...
Page 226: Developing Section
2AV/X 1-6-6 Developing section (1) Adjusting the position of the doctor blade (reference) Perform the following adjustment if carrier or background appears on the copy image. Procedure 1. Remove the image formation unit (see page MC rail 1-6-40). 2. Remove the charger assembly (see page 1- 6-40).
Page 227: Transfer Section
2AV/X 1-6-7 Transfer section (1) Detaching and refitting the transfer roller assembly Follow the procedure below to replace the transfer roller assembly. Procedure 1. Open the bypass tray and paper conveying unit. 2. Remove the transfer roller assembly. Caution: Remove the transfer roller assembly carefully to prevent the residual toner in the transfer roller assembly from spilling.
Page 228: Cleaning Section
2AV/X 1-6-8 Cleaning section (1) Detaching and refitting the cleaning blade Follow the procedure below to replace the cleaning blade. Procedure 1. Remove the image formation unit and the charger assembly (see page 1-6-40). Cleaning blade 2. Remove the MC rail (see page 1-6-44). 3.
Page 229: Detaching And Refitting The Drum Separation Claw Assemblies
2AV/X (2) Detaching and refitting the drum separation claw assemblies Follow the procedure to replace the drum separation claw assemblies. Procedure 1. Remove the image formation unit (see page Drum separation claw assemblies 1-6-40). 2. Remove the screw holding each of the drum separation claw assemblies and then the assemblies.
Page 230: Detaching And Refitting The Fixing Unit
2AV/X 1-6-9 Fixing section (1) Detaching and refitting the fixing unit Follow the procedure below to check or replace the fixing unit. Procedure 1. Open the bypass tray, paper conveying unit Connector (blue) and front cover, and then remove the rear cover, left front cover and left rear cover.
Page 231: Detaching And Refitting The Fixing Unit Thermistor
2AV/X (2) Detaching and refitting the fixing unit thermistor Follow the procedure below to replace the fixing unit thermistor. Procedure 1. Remove the fixing unit (see page 1-6-48). Fixing unit thermister 2. Remove the screw and detach the connector, and then remove the fixing unit thermistor. 3.
Page 232: Detaching And Refitting The Fixing Heater
2AV/X (4) Detaching and refitting the fixing heater Follow the procedure below to replace the fixing heater. Procedure 1. Remove the fixing unit (see page 1-6-48). 2. Detach the fixing heater connector. Connector Figure 1-6-72 3. Remove the screw holding each of the fixing heater front and rear retainers and then the retainers.
Page 233: Detaching And Refitting The Heat Roller
2AV/X (5) Detaching and refitting the heat roller Follow the procedure below to replace the heat roller. Procedure 1. Remove the fixing unit (see page 1-6-48). 2. Remove the fixing unit thermistor, fixing heater and heat roller separation claw assemblies (see pages 1-6-49 and 50). 3.
Page 234 2AV/X 6. Remove the four screws holding the fixing housing and then the housing. Fixing housing Figure 1-6-78 7. Remove the pressure spring from each of the front and rear ends of the fixing unit. Press springs Figure 1-6-79 8. Remove the C ring, gear and bushing on the C ring rear and the C ring and bushing on the front of the heat roller, and then remove the heat...
Page 235: Detaching And Refitting The Press Roller
2AV/X (6) Detaching and refitting the press roller Follow the procedure below to replace the press roller. Procedure 1. Remove the fixing unit (see page 1-6-48). 2. Remove the heat roller (see page 1-6-51). 3. Remove the screw holding the fixing guide plate and then the plate.
Page 236: Replacing The Main Pcb
2AV/X 1-7-1 Replacing the main PCB Main PCB replacement requires the following tools: Memory tool PCB (P/N 2AV68030) NVRAM (P/N NAC06020) Procedure • Before replacing the main PCB (backing up the machine data) 1. Turn the main switch off and disconnect the Upper shield power plug.
Page 237 2AV/X 6. Insert the power plug and turn the main switch on. LED1 (green) on the memory tool PCB flashes (on for 1 s → off for 1 s) for approximately 10 seconds and the machine data on the SRAM of the main PCB will be backed up on the NVRAM. 7.
Page 238: Upgrading The Firmware On The Main Pcb
2AV/X 1-7-2 Upgrading the firmware on the main PCB Firmware upgrading requires the following tools: Flash tool assembly (P/N 35968010) Memory tool PCB (P/N 2AV68030) Master ROMs 15 cpm: Main ROM 1 IC (P/N 2AV68060) 20 cpm: Main ROM IC (P/N 2AX68010) Procedure 1.
Page 239 2AV/X 7. Insert the power plug and turn the main switch on. LED2 (green) on the flash tool assembly flashes and upgrading of the master ROM starts. 8. When flashing LED2 (green) remains lit after approximately 30 to 40 seconds, upgrading of the master ROM is complete.
Page 240: Upgrading The Firmware On The Operation Unit Pcb (20 Cpm Copier Only)
2AV/X 1-7-3 Upgrading the firmware on the operation unit PCB (20 cpm copier only) Firmware upgrading requires the following tools: Flash tool assembly (P/N 35968010) Master ROMs Inch specifications Operation unit ROM 1 IC (P/N 2AX68020) Metric specifications Operation unit ROM 1 IC (P/N 2AX68040) Procedure 1.
Page 241: Adjustment-Free Variable Resistors (Vr)
2AV/X 1-7-4 Adjustment-free variable resistors (VR) The variable resistors listed below are set at the factory prior to shipping and cannot be adjusted in the field. • High-voltage transformer PCB: VR101, VR102, VR201, VR301, VR302 • Inverter PCB: VR1, VR2 1-7-6...
Page 242: Paper Feed Section
2AV/X 2-1-1 Paper feed section The paper feed section consists of the primary feed and secondary feed subsections. Primary feed conveys paper from the upper drawer, lower drawer or bypass tray to the left and right registration rollers, at which point secondary feed takes place and the paper travels to the transfer section in sync with the printing timing.
Page 243 2AV/X MPCB CN4-10 CN3-7 PFCL-U CN4-14 PSW-U CN3-10 BYPPFCL CN4-12 BYPPSW CN6-2 CN8-3 PFCL-L* CN8-15 PSW-L* *Optional for the 15 cpm copier. Figure 2-1-2 Paper feed section block diagram Start key 263 ms 300 ms 300 ms 263 ms 100 ms 100 ms PFCL-U 2927 ms (20 cpm)
Page 244 2AV/X Start key 263 ms 300 ms 100 ms BYPPFCL 3000 ms Original: A5R, copy paper: A3/11" × 17", magnification ratio 200% Timing chart 2-1-2 Paper feed from the bypass tray a: When the start key is pressed, the drive motor (DM) turns on. b: 3000 ms after the drive motor (DM) turns on, the bypass paper feed clutch (BYPPFCL) turns on and the bypass paper feed pulleys rotate to start primary paper feed.
Page 245: Main Charging Section
2AV/X 2-1-2 Main charging section The main charging section consists of the drum and main charger assembly. The drum is electrically charged by means of a grid to form a latent image on the surface. The shield grid ensures that the charge is applied uniformly. Tungsten wire Main charger assembly Drum...
Page 246 2AV/X HVTPCB MPCB 24 V DC CN1-9 CN4-1 MC REM CN1-7 CN4-3 GRID GRID CONT CN1-4 CN4-6 MC ALM Drum CN1-1 CN4-9 Figure 2-1-5 Main charging section block diagram Start key 840 ms 500 ms MC REM Timing chart 2-1-3 Main charging a: 500 ms after the start key is pressed, main charging (MC REM) starts.
Page 247: Optical Section
2AV/X 2-1-3 Optical section The optical section consists of the scanner, mirror frames and the image scanning unit for scanning and the laser scanner unit for printing. Figure 2-1-6 Optical section 1 Mirror 1 frame 2 Mirror 2 frame 3 Exposure lamp (EL) 4 Mirror 1 5 Mirror 2 6 Mirror 3...
Page 248: Original Scanning
2AV/X (1) Original scanning The original image is illuminated by the exposure lamp (EL) and scanned by the CCD PCB (CCDPCB) in the image scanning unit via the three mirrors, the reflected light being converted to an electrical signal. The scanner and mirror frames travel to scan on the optical rails on the front and rear of the machine to scan from side to side.
Page 249: Image Printing
2AV/X (2) Image printing The image data scanned by the CCD PCB (CCDPCB) is processed on the main PCB (MPCB) and transmitted as image printing data to the laser scanner unit (LSU). By repeatedly turning the laser on and off, the laser scanner unit forms a latent image on the drum surface.
Page 250 2AV/X Drum Figure 2-1-9 Laser scanner unit (2) 1 Laser diode: Generates the laser beam which forms a latent image on the drum. 2 Collimator lens: Collimates the diffused laser beam emitted from the laser diode to convert it into a cylindrical beam. 3 Cylindrical lens: Shapes the collimated laser beam to suit the printing resolution.
Page 251: Developing Section
2AV/X 2-1-4 Developing section The developing section consists of the developing unit and the toner cartridge. The developing unit consists of the developing roller where a magnetic brush is formed, the doctor blade and the developing spirals that agitate the developer. Toner from the toner cartridge and residual toner collected in the cleaning section are conveyed to the waste toner tank.
Page 252: Formation Of Magnetic Brush
2AV/X (1) Formation of magnetic brush The developing roller consists of a magnet roller with five poles and a sleeve roller. Rotation of the sleeve roller around the magnet roller entrains developer, which in turn forms a magnetic brush at pole N1 on the magnet roller. The height of the magnetic brush is regulated by the doctor blade;...
Page 253: Toner Density Detection By The Toner Sensor
2AV/X (2) Toner density detection by the toner sensor The toner sensor (TNS) detects the toner density. As the developer passes by the sensor section of the toner sensor, the toner sensor detects the ratio of toner to carrier in the developer and converts it into a voltage. When more toner is used, the ratio of toner to carrier decreases and the toner sensor output voltage increases.
Page 254: Correcting The Toner Sensor Control Voltage
2AV/X (4) Correcting the toner sensor control voltage The toner sensor control voltage is corrected based on the absolute humidity and the total drive motor time so that the toner density is kept constant regardless of the changes in humidity and the total drive motor time. Toner sensor control voltage after correction = A + B + C A: Toner sensor control voltage before correction (value set by maintenance item U131) B: Correction data based on the absolute humidity...
Page 255: Correcting Toner Output Voltage
2AV/X • Correction based on the total drive motor time The toner sensor control voltage is also corrected based on the total time the drive motor (DM) has been on from execution of maintenance item U130, so that the toner sensor output voltage is regulated properly. Correction data X-10 X-20...
Page 256: Transfer And Separation Section
2AV/X 2-1-5 Transfer and separation section The transfer and separation section consists mainly of the transfer roller and drum separation claws. A high voltage generated by the high-voltage transformer PCB (HVTPCB) is applied to the transfer roller for transfer charging. Toner adhered to the transfer roller is removed by the transfer cleaner. Separation claw pulleys Drum separation claws Transfer roller...
Page 257 2AV/X Start key 418 ms TC REM 474 ms Timing chart 2-1-5 Operation of transfer a: 418 ms after the registration clutch (RCL) turns on to start secondary paper feed, transfer charging (TC REM) starts. b: 474 ms after the trailing edge of the paper turns the registration switch (RSW) off, transfer charging (TC REM) ends. 2-1-16...
Page 258: Cleaning Section
2AV/X 2-1-6 Cleaning section The cleaning section consists of the cleaning blade that removes residual toner from the drum surface after the transfer process, and the cleaning spiral that carries the residual toner back to the waste toner tank. Cleaning spiral Lower cleaning seal Cleaning blade Drum...
Page 259: Charge Erasing Section
2AV/X 2-1-7 Charge erasing section The cleaning lamp (CL) consists of LEDs which remove residual charge from the drum surface. Cleaning lamp (CL) Light-blocking lumirror Figure 2-1-23 Charge erasing section MPCB CL REM CN12-2 Drum Figure 2-1-24 Charge erasing section block diagram Start key MC REM 1316 ms...
Page 260: Fixing Section
2AV/X 2-1-8 Fixing section The fixing section consists of the parts shown in Figure 2-1-25. When paper reaches the fixing section after the transfer process, it passes between the press roller and heat roller, which is heated by the fixing heater (FH). Pressure is applied by the fixing unit pressure springs so that the toner on the paper is melted, fused and fixed onto the paper.
Page 261 2AV/X 1500 ms 1000 ms 20 s 30 s DB REM Half speed Full speed Half speed CFM1, 2, 3 Timing chart 2-1-7 Operation of fixing section a: 1500 ms after the main switch (MSW) is turned on, the fixing heater (FH) turns on to heat the heat roller. At the same time, cooling fan motors 1, 2 and 3 (CFM1, 2 and 3) rotate at half speed.
Page 262: Electrical Parts Layout
2AV/X 2-2-1 Electrical parts layout (1) PCBs Machine front Machine inside Machine rear Figure 2-2-1 PCBs 1. Main PCB (MPCB) ........Controls the other PCBs, electrical components and optional devices. 2. Power source PCB (PSPCB) ....... Generates 24 V DC, +12 V DC, 5V DC and 3.3 V DC; controls the fixing heater.
Page 263: Switches And Sensors
2AV/X (2) Switches and sensors 11 9 7 12 10 8 Machine front Machine inside Machine rear Figure 2-2-2 Switches and sensors 1. Main switch (MSW) ........Turns the AC power on and off. 2. Safety switch 1 (SSW1) ....... Breaks the safety circuit when the front cover is opened. 3.
Page 264 2AV/X 16. Bypass paper width switch (BYPPSW) ........... Detects the width of paper on the bypass tray. 17. Drawer feed switch* (DFSW) ....... Detects a paper misfeed in the lower drawer. 18. Scanner home position switch (SHPSW) ............. Detects the optical system in the home position. 19.
Page 265: Motors
2AV/X (3) Motors Machine front Machine inside Machine rear Figure 2-2-3 Motors 1. Drive motor (DM) ......... Drives the machine. 2. Scanner motor (SM) ........Drives the optical system. 3. Toner feed motor (TFM) ....... Replenishes toner. 4. Cooling fan motor 1 (CFM1) ......Cools the fixing section. 5.
Page 266: Other Electrical Components
2AV/X (4) Other electrical components Machine front Machine inside Machine rear Figure 2-2-4 Other electrical components 1. Upper paper feed clutch (PFCL-U) ....Primary paper feed from the upper drawer. 2. Lower paper feed clutch* (PFCL-L) ..... Primary paper feed from the lower drawer. 3.
Page 267: Power Source Pcb
2AV/X 2-3-1 Power source PCB Power source PCB AC input Noise Rectifier circuit 24 V DC filter 24 V DC output C29,30 circuit circuit 12 V DC 12 V DC output circuit 5.1 V DC 5.1 V DC output C37,91 circuit IC4 Switching Zero-cross...
Page 268 2AV/X • 100V LUG1 L5 D13 LUG2 • 200V LUG1 L5 D13 LUG2 Figure 2-3-2 Power source PCB silk-screen diagram 2-3-2...
Page 269 2AV/X Terminals (CN) Voltage Remarks TB-1 TB-2 120 V AC 120 V AC supply, input TB-1 TB-2 220-240 V AC 220-240 V AC supply, input* TB-4 TB-5 120 V AC 120 V AC supply for MSW, output TB-4 TB-5 220-240 V AC 220-240 V AC supply for MSW, output* 120 V AC AC supply for FH, output...
Page 270: Main Pcb
2AV/X 2-3-2 Main PCB • 15 cpm copier Main PCB Clock signal Analog image data CCD PCB Even Print data Printer data FEEPROM Printer controller* IC11 Memory image data Address bus Memory PCB* Data bus IC16 STDF* Control signal output Job separator* SRAM Driver...
Page 271 2AV/X CN25 CN23 CN22 CN24 CN20 CN21 IC5 1 2AV2801 REV:2 BAT1 IC10 IC11 IC12 IC15 IC18 IC19 IC29 IC30 Figure 2-3-4 Main PCB silk-screen diagram (15 cpm copier) 2-3-5...
Page 272 2AV/X • 20 cpm copier Main PCB Scan signal Driver Operation unit PCB Detection signal input LCD controller SRAM LCD display data IC12 IC19 Address bus Operation Flash tool Data bus unit CPU IC10 Clock signal Analog image data CCD PCB FEEPROM IC16 Even...
Page 273 2AV/X The main PCB (MPCB) consists of the main CPU and operation unit CPU. The main CPU IC23 communicates with other PCBs and controls memory copying, the image processing system and the engine drive system. The operation unit CPU IC10 controls the LCD display and the entire operation section. The main CPU IC23 operates on an 8-bit bus.
Page 274 2AV/X CN28 CN25 CN23 CN22 CN24 CN20 CN21 CN26 CN27 IC15 IC10 IC11 IC14 IC12 IC16 CN29 50 49 CN34 2AX2801 REV : 3 IC22 IC28 IC39 IC43 IC42 IC46 IC40 Figure 2-3-6 Main PCB silk-screen diagram (20 cpm copier) 2-3-8...
Page 275 2AV/X Terminals (CN) Voltage Remarks 3.3 V DC 3.3 V DC supply from PSPCB, input 1-5, 6 1-3, 4 5 V DC 5 V DC supply from PSPCB, input 1-9, 10 1-7, 8 24 V DC 24 V DC supply from PSPCB, input 12 V DC 12 V DC supply from PSPCB, input 0/5 V DC...
Page 276 2AV/X Terminals (CN) Voltage Remarks 8-15 8-22 0/5 V DC PSW-L* on/off, input 8-16 8-22 0/5 V DC PSW (ST) 1* on/off, input 8-17 8-22 0/5 V DC PSW (ST) 2* on/off, input 8-18 8-22 0/24 V DC DDM*2 on/off, output 8-19 8-22 0/24 V DC...
Page 277 2AV/X Terminals (CN) Voltage Remarks 14-2B 14-4A 0/5 V DC OSLED* (green) on/off, output 14-3B 14-4A 0/5 V DC SBPSOL* release signal, output 14-4B 14-4A 0/5 V DC SBPSOL* actuate signal, output 14-5B 14-4A 0/5 V DC OFCL* on/off, output 14-6B 14-4A 0/5 V DC...
Page 278 2AV/X Terminals (CN) Voltage Remarks 20-4 20-2 0/5 V DC PM READY signal, input 20-5 20-2 0/5 V DC (pulse) PM drive clock pulse, output 21-1 21-2 0/5 V DC LDPCB HSYNC signal, input 21-3 21-2 5 V DC 5 V DC supply for LDPCB, output 21-5 21-2 0/5 V DC...
Page 279 2AV/X Terminals (CN) Voltage Remarks 27-11 27-12 -12-0 V DC LCD Vo signal, output 28-1 24-5 0/24 V DC (pulse) SM coil energization pulse, output (_A) 28-2 24-5 24 V DC 24 V DC supply for SM, output 28-3 24-5 0/24 V DC (pulse) SM coil energization pulse, output (A) 28-4...
Page 280: Ccd Pcb
2AV/X 2-3-3 CCD PCB CCD PCB Main PCB Logic IC1 Clock signal generator ASIC SHIFT SHIFT Transistor TR2 Analog signal processing circuit Even Even Transistor TR1 Figure 2-3-7 CCD PCB block diagram The CCD PCB (CCDPCB) is equipped with a CCD sensor IC2 for original scanning. The CCD sensor IC2 is controlled by the clock signals φ1, φ2, RS, CLP and SHIFT for CCD drive from the main PCB (MPCB) via logic IC1.
Page 281: Laser Diode Pcb
2AV/X 2-3-4 Laser diode PCB Main PCB Laser diode PCB /ADJUST Laser driver Photo /ENABLE Driver sensor /VIDEO Figure 2-3-8 Laser diode PCB block diagram The laser diode PCB (LDPCB) consists of the laser diode LD1 and laser driver IC1. The laser driver IC1 on the laser diode PCB (LDPCB) turns the laser diode LD1 on and off according to the image data received from the main PCB (MPCB).
Page 282 2AV/X 2-4-1...
Page 283 2AV/X 2-4-2...
Page 284 2AV/X " × 8 " original onto a sheet of A3/11" × 17" copy paper from the bypass tray, magnification ratio 200% Timing chart No. 3 Copying an A5R/5 Start key Any key Fwd. rotation CN28-1,3,4,6 Rev. rotation 1078 P 34 P 472 P 2834 P...
Page 285 2AV/X Timing chart No. 4 Continuous copying of an A4/11" × 8 " original onto two sheets of A4/11" × 8 " copy paper from the upper drawer, magnification ratio 100% (20 cpm copier) Start key Any key Fwd. rotation CN28-1,3,4,6 Rev.
Page 286: Timing Chart No. 5
2AV/X Timing chart No. 5 Continuous copying of an A4/11" × 8 " original onto two sheets of A4/11" × 8 " copy paper from the upper drawer, magnification ratio 100% (15 cpm copier) Start key Any key Fwd. rotation CN28-1,3,4,6 Rev.
Page 287 2AV/X Timing chart No. 6 Continuous copying of an A3/11" × 17" original onto two sheets of A5R/5 " × 8 " copy paper from the lower drawer, magnification ratio 50%, ejection to the job separator Start key Fwd. rotation CN28-1,3,4,6 Rev.
Page 288: Timing Chart No. 7
2AV/X " × 11" original onto two sheets of A4R/8 " × 11" copy paper from optional drawer 1, magnification ratio 100% (15 cpm copier) Timing chart No. 7 Continuous copying of an A4R/8 Start key CN12-16 CN8-18 DDM (ST) 1 CN8-19 CN4-10 100 ms...
Page 289 2AV/X Timing chart No. 8 Continuous copying of an A4/11" × 8 " original onto two sheets of A4/11" × 8 " copy paper from optional drawer 1, magnification ratio 100%, ejection to the finisher (20 cpm copier) Start key CN12-16 CN8-18 DDM (ST) 1...
Page 290: Timing Chart No. 9
2AV/X Timing chart No. 9 Continuous copying of an A4/11" × 8 " × 11" copy paper from optional drawer 1, magnification ratio 100%, ejection to the finisher (20 cpm copier) " original onto two sheets of A4R/8 Start key CN12-16 CN8-18 DDM (ST) 1...
Page 291 2AV/X " × 11" original onto a duplex A4R/8 " × 11" copy from optional drawer 2, magnification ratio 100%, ejection to the job separator Timing chart No. 10 Duplex copying of a single-sided A4R/8 (20 cpm copier) Start key CN12-16 CN8-18 DDM (ST) 1...
Page 292: Maintenance Parts List
2AV/X Maintenance parts list • Copier Maintenance part name Part No. Fig. No. Ref. No. Name used in service manual Name used in parts list Right registration roller RIGHT ROLLER, REGISTRATION 2AV06060 Left registration roller LEFT ROLLER, REGISTRATION 2AV06070 Upper paper feed pulley PULLEY, PAPER FEED 2AV06010 Lower paper feed pulley...
Page 293: Periodic Maintenance Procedures
2AV/X Periodic maintenance procedures • Copier Maintenance Section Method Maintenance cycle Points and cautions Page part/location Test copy and Perform at the maximum Test copy Every service test print copy size Maintenance Section Method Maintenance cycle Points and cautions Page part/location Paper feed Right registration roller...
Page 294 2AV/X Maintenance Section Method Maintenance cycle Points and cautions Page part/location Optical section Original size detection Clean Every service Clean the sensor emitter and (con.) sensor receiver with alcohol and then a dry cloth only if there is a problem. Maintenance Section Method...
Page 295 2AV/X Maintenance Section Method Maintenance cycle Points and cautions Page part/location Fixing/Eject Heat roller Clean or replace Clean after 100,000 Clean with alcohol. 1-6-51 section counts; check and replace after 200,000 counts Press roller Clean or replace Clean after 100,000 Clean with alcohol.
Page 298 Industrivej 11, DK-4632 Bj verskov, Denmark 2-28, 1-chome, Tamatsukuri, Chuo-ku, Osaka 540-8585, Japan Phone: 56871100 Phone: (06) 6764-3555 Fax: (06) 6764-3981 ©2000 KYOCERA MITA CORPORATION is a trademark of Kyocera Corporation is a registered trademark of KYOCERA MITA CORPORATION Printed in Holland...

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