Kyocera DP-770 Service Manual
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Kyocera DP-770 Service Manual

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DP-770(B)
SERVICE
MANUAL
Published in July 2016
3NVSM064
Rev.4

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Summary of Contents for Kyocera DP-770

  • Page 1 DP-770(B) SERVICE MANUAL Published in July 2016 3NVSM064 Rev.4...
  • Page 2 CAUTION RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS. It may be illegal to dispose of this battery into the municipal waste stream. Check with your local solid waste officials for details in your area for proper disposal. ATTENTION IL Y A UN RISQUE D’EXPLOSION SI LA BATTERIE EST REMPLACEE PAR UN MODELE DE TYPE INCORRECT.

  • Page 3: Revision History

    Revision history Revision Date Replaced pages Remarks 6 April 2011 Safety precautions, 1-3-45, 1-6-1, 2-1-2, 2-1-6, 2-4-4 - 4 June 2012 1-3-1, 1-3-2, 13-10 to 16, 1-3-18, 1-3-19, 1-3-21 to 29, 1-3-32 to 39, 1-3-41 to 44, 1-4-3, 1-4-4, 2-4-1, Address March 2014 Cover,Contents,1-2-2,1-3-2 to 1-3-56,1-4-1,1-4-3 to 1-4-5,2-4-1,Installation guide, Address...
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  • Page 5: 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 6: Safety Warnings And Precautions

    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 7: 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 8: Precautions For Maintenance

    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 9 • Do not remove the ozone filter, if any, from the copier except for routine replacement....... • Do not pull on the AC power cord or connector wires on high-voltage components when removing them; always hold the plug itself......................•...
  • Page 10 This page is intentionally left blank.

  • Page 11: Table Of Contents

    CONTENTS 1-1 Specifications 1-1-1 Specifications ........................1-1-1 1-1-2 Parts names .......................... 1-1-2 1-1-3 Machine cross section ......................1-1-3 1-2 Installation 1-2-1 Installation environment......................1-2-1 1-2-2 Unpacking..........................1-2-2 (1) Unpacking......................... 1-2-2 (2) Remove the tapes and pad ....................1-2-3 1-3 Maintenance Mode 1-3-1 Maintenance mode ........................
  • Page 12 3NV-3 2-2 Electrical Parts Layout 2-2-1 Electrical parts layout ......................2-2-1 (1) PWBs..........................2-2-1 (2) Switches and sensors....................... 2-2-2 (3) Motors..........................2-2-3 (4) Others..........................2-2-4 2-3 Operation of the PWBs 2-3-1 DP main PWB........................2-3-1 2-4 Appendixes 2-4-1 Appendixes ..........................2-4-1 (1) List of maintenance parts ....................

  • Page 13: Specifications

    1-1 Specifications 1-1-1 Specifications Item Specifications Original feed method Automatic feed Supported original types Sheet originals Maximum: A3/Ledger Original sizes Minimum : A5R/StatementR Simplex: 45 to 160 g/m Original weights Duplex : 50 to 120 g/m 100 sheets (50 to 80 g/m ) or less Loading capacity Mixed original sizes (auto selection) 30sheets (50 to 80 g/m...

  • Page 14: Parts Names

    1-1-2 Parts names Figure 1-1-1 1. Original tray 5. DP top cover 2. Original width guides 6. DP switchback tray 3. Original eject table 7. Cleaning cloth compartment 4. Original stopper 1-1-2...

  • Page 15: Machine Cross Section

    1-1-3 Machine cross section Original Path Figure 1-1-2 Machine cross section 1. Original feed section 2. Original conveying section 3. Original switchback/eject section 1-1-3...
  • Page 16 This page is intentionally left blank. 1-1-4...

  • Page 17: Installation Environment

    1-2 Installation 1-2-1 Installation environment Installation location (Be based on the machine establishment place.) Avoid direct sunlight or bright lighting. Ensure that the photoconductor will not be exposed to direct sunlight or other strong light when removing paper jams. Avoid locations subject to high temperature and high humidity or low temperature and low humidity; an abrupt change in the environmental temperature;...

  • Page 18: Unpacking

    3NV-3 1-2-2 Unpacking (1) Unpacking Figure 1-2-1 Unpacking 1. Document processor 9. Rear top pad 17. Angle control fitting 2. Plastic sheet 10. Cleaning cloth 18. Fixing fittings 3. Inner frame 11. Plastic bag 19. Plastic bag 4. Outer case 12.

  • Page 19: Remove The Tapes And Pad

    (2) Remove the tapes and pad Procedure Tape 1. Remove four tapes. Tape Tape Tape Figure 1-2-2 DP top cover 2. Open the DP top cover and original width guides. Original width guide 3. Remove the pad. Original width guide Figure 1-2-3 1-2-3...
  • Page 20 This page is intentionally left blank. 1-2-4...

  • Page 21: Maintenance Mode

    1-3 Maintenance Mode 1-3-1 Maintenance mode The machine is equipped with a maintenance function which can be used to maintain and service the machine. (1) Executing 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 selected.

  • Page 22: Maintenance Mode Item List

    3NV-3 (2) Maintenance mode item list Item Section Content of maintenance item General U000 Output Maintenance Report U001 Exiting the maintenance mode Optical U061 Checking the operation of the exposure lamp U068 Adjusting the scanning position for originals from the DP U070 Adjusting the DP magnification U071 Adjusting the DP scanning timing U072 Adjusting the DP center line...

  • Page 23: Contents Of Maintenance Mode Items

    3NV-3 (3) Contents of maintenance mode items Item No. Description U000 Output Maintenance Report Description Outputs lists of the current settings of the maintenance items, and paper jam and service call occurrences. Outputs the event log or service status page. Also sends output data to the USB memory.
  • Page 24 3NV-3 Item No. Description U000 Method: Send to the USB memory 1. Press the power key on the operation panel, and after verifying the main power indicator has gone off, switch off the main power switch. 2. Insert USB memory in USB memory slot. 3.

  • Page 25: Event Log

    3NV-3 Item No. Description U000 Event log Event Log 2013/01/31 08:40 Firmware version 2N4_2000.000.000 2013.01.27 [XXXXXXXX] [XXXXXXXX] [XXXXXXXX] [XXXXXXXX] (12) Paper Jam Log Counter Log Count. Event Descriprions Date and Time J0000: J0041: C0000: 9999999 0501.01.08.01.01 2013/01/23 11:56 J0001: J0042: C0001: 8888888 4002.01.08.01.01...
  • Page 26 3NV-3 Item No. Description U000 Detail of event log Items Description Controller BROM version Operation panel mask version Machine serial number Paper Jam Count. Event Descriptions Remembers 1 to 16 of The total page count Log code (hexadeci- occurrence. If the occur- at the time of the mal, 5 categories) rence of the previous...
  • Page 27 3NV-3 Item No. Description U000 Items Description Paper Jam (d) Detail of paper type (Hexadecimal) cont. 01: Plain 0A: Color 15: Custom 1 02: Transparency 0B: Prepunched 16: Custom 2 03: Preprinted 0C: Envelope 17: Custom 3 04: Labels 0D: Cardstock 18: Custom 4 05: Bond 0E: Coated...
  • Page 28 3NV-3 Item No. Description U000 Items Description Service Call Count. Service Code Remembers 1 to 8 The total page Self diagnostic error code of occurrence of self count at the time of (See page 1-4-62) diagnostics error. If the self diagnostics the occurrence of error.
  • Page 29 3NV-3 Item No. Description U000 Items Description (11) Unknown Toner Count. Item Remembers 1 to 5 The total page count Unknown toner log of occurrence of at the time of the code unknown toner toner empty error (1 byte, 2 categories) detection.

  • Page 30: Service Status Page

    3NV-3 Item No. Description U000 Service status page (1) Service Status Page 2012/10/27 12:00 Firmware version 2N4_2000.000.000 2012.10.27 [XXXXXXXX] [XXXXXXXX] [XXXXXXXX] Controller Information (30) FAX Information Slot1/Slot2 (31) Rings (Normal) Memory status (32) Rings (FAX/TEL) Total Size 3.5 GB (33) Rings (TAD) (34) Option DIMM Size...

  • Page 31: Engine Information

    3NV-3 Item No. Description U000 Service status page (2) Service Status Page 2012/10/27 12:00 Firmware version 2N4_2000.000.000 2012.10.27 [XXXXXXXX] [XXXXXXXX] [XXXXXXXX] Engine Information Send Information (40) (44) NVRAM Version _1F31225_1F31225 Date and Time 10/10/27 (41) Scanner Version 2N4_1200.001.089 (45) Address (42) FAX Slot1 FAX BOOT Version...
  • Page 32 3NV-3 Item No. Description U000 Detail of service status page Description Supplement Firmware version System date Engine soft version Engine boot version Operation panel mask version Machine serial number Total memory size Local time zone Report output date Day/Month/Year hour:minute (10) NTP server name (11)
  • Page 33 3NV-3 Item No. Description U000 Description Supplement (26) Average coverage for printer Black/Cyan/Magenta/Yellow (27) Average coverage for fax Black/Cyan/Magenta/Yellow (28) Cleared date and output date (29) Coverage on the final output page (30) Fax kit information This item is printed only when the fax kit is installed.
  • Page 34 3NV-3 Item No. Description U000 Description Supplement (42) Fax firmware version This item is printed only when the fax kit is installed. (43) Mac address (44) The last sent date and time (45) Transmission address (46) Destination information (47) Area information (48) Margin settings Top margin/Left margin...
  • Page 35 3NV-3 Item No. Description U000 Description Supplement (63) Job end detection mode (64) Prescribe environment reset 0: Off 1: On (65) Media type attributes Weight settings Fuser settings 1 to 28 (Not used: 18, 19, 20) 0: Light 0: High * : For details on settings, 1: Normal 1 1: Middle...
  • Page 36 3NV-3 Item No. Description U000 Description Supplement (88) Data Sanitization information (89) Toner low setting 0: Enabled 1: Disabled (90) Toner low detection level 0 to 100 (%) (91) Limiting shifting for one-page 0: Invalid (No shift limit) document 1: Valid (Shift limit) (92) Setting confirmation display for 0: Not shown...
  • Page 37 3NV-3 Item No. Description U061 Checking the operation of the exposure lamp Description Lights the exposure lamp. Purpose To check whether the exposure lamp are turned on. Method 1. Press the start key. 2. Select the item. Display Description The exposure lamp lights The CIS lights (when dual scan DP is installed) 3.
  • Page 38 3NV-3 Item No. Description U068 Adjusting the scanning position for originals from the DP Description Adjusts the position for scanning originals from the DP. Perform the test copy at the four scanning positions after adjusting. Purpose Used when the image fogging occurs because the scanning position is not proper when the DP is used.
  • Page 39 3NV-3 Item No. Description U070 Adjusting the DP magnification Description Adjusts the DP original scanning speed. Purpose Make the adjustment if the magnification is incorrect in the auxiliary scanning direction when the DP is used. Make the adjustment if the magnification is incorrect in the main scanning direction when the CIS is used.
  • Page 40 3NV-3 Item No. Description U070 Adjustment: [Main Scan] 1. Change the setting value using the +/- keys or numeric keys. For copy example 1, increase the value. For copy example 2, decrease the value. Increasing the setting enlarges the image and decreasing it narrows the image. Copy Original Copy...
  • Page 41 3NV-3 Item No. Description U071 Adjusting the DP scanning timing Description Adjusts the DP original scanning timing. Purpose Make the adjustment if there is a regular error between the leading or trailing edges of the origi- nal and the copy image when the DP is used. Method 1.
  • Page 42 3NV-3 Item No. Description U071 Adjustment: Leading edge registration 1. Change the setting value using the +/- keys or numeric keys. For copy example 1, increase the value. For copy example 2, decrease the value. Increasing the value moves the image forward and decreasing the value moves the image backward.
  • Page 43 3NV-3 Item No. Description U072 Adjusting the DP center line Description Adjusts the scanning start position for the DP original. Purpose Make the adjustment if there is a regular error between the centers of the original and the copy image when the DP is used. Adjustment 1.
  • Page 44 3NV-3 Item No. Description U073 Checking the scanner operation Description Simulates the scanner operation under the arbitrary conditions. Purpose To check the scanner operation. This is also done to check the accumulation of dust on the slit glass. Method 1. Press the start key. 2.
  • Page 45 3NV-3 Item No. Description U073 Method: [Home Position] 1. Select [Home Position]. 2. Press the start key. The mirror frame of the scanner moves to the home position. Method: [Dust Check] 1. Select [Dust Check]. 2. Press the start key. The exposure lamp lights. 3.
  • Page 46 3NV-3 Item No. Description U074 DP input response adjustment Description Sets the density correction for scanning originals from the DP. Purpose Modify the setting only if a spotted background appears when a bluish original or a document with a background that is slightly colored is scanned from the DP. Perform adjustment if the page scanned using the table and the page scanned using DP do not match.
  • Page 47 3NV-3 Item No. Description U087 Setting DP reading position modification operation Description The presence or absence of dust is determined by comparing the scan data of the original trailing edge and that taken after the original is conveyed past the DP original scanning position. If dust is identified, the DP original scanning position is adjusted for the following originals.
  • Page 48 3NV-3 Item No. Description U091 Setting the white line correction Description Sets the error detection threshold value for white line correction and displays the count result of abnormal pixels. Purpose To perform when replacing the CIS, DP main PWB or CIS roller. Method 1.
  • Page 49 3NV-3 Item No. Description U099 Adjusting original size detection Description Checks the operation of the original size detection and sets the sensing threshold value. Purpose Modify the threshold of detection if documents are frequently mal-detected in size after scanning a wholly dark document or a document enclosed with dark objects on edges. Method 1.
  • Page 50 3NV-3 Item No. Description U099 Setting: [B/W Level1] 1. Select an item to be set. 2. Change the setting value using the +/- keys or numeric keys.l Setting Initial Display Description range setting* Original R1 Original threshold value for color R (near side) 0 to 255 20/50 Original R2...
  • Page 51 3NV-3 Item No. Description U203 Checking DP operation Description Simulates the original conveying operation separately in the DP. Purpose To check the DP operation. Method 1. Press the start key. 2. Place an original in the DP if running this simulation with paper. 3.
  • Page 52 3NV-3 Item No. Description U203 Setting: [Result] Press the start key. The value is set. Completion Press the stop key. The screen for selecting a maintenance item No. is displayed. U243 Checking the operation of the DP motors Description Turn the motors or solenoids in the DP on. Purpose To check the operation of the DP motors and solenoids.
  • Page 53 3NV-3 Item No. Description U244 Checking the DP switches Description Displays the status of the respective switches and sensors in the DP. Purpose To check if respective switches and sensors in the DP operate correctly. Method 1. Press the start key. 2.
  • Page 54 3NV-3 Item No. Description U326 Setting the black line cleaning indication Description Sets whether to display the cleaning guidance when detecting the black line. Purpose Displays the cleaning guidance in order to make the call for service with the black line decrease by the rubbish on the contact glass when scanning from the DP.
  • Page 55 3NV-3 Item No. Description U404 Adjusting margins for scanning an original from the DP Description Adjusts margins for scanning the original from the DP. Purpose Make the adjustment if margins are incorrect. Adjustment 1. Press the start key. 2. Press the system menu key. 3.
  • Page 56 3NV-3 Item No. Description U404 Caution If the above adjustment does not optimize the margins, perform the following maintenance modes. U039 U034 U402 U403 U404 Completion Press the stop key. The screen for selecting a maintenance item No. is displayed. 1-3-36...
  • Page 57 3NV-3 Item No. Description U411 Adjusting the scanner automatically Description Uses a specified original and automatically adjusts the following items in the scanner and the DP scanning sections. Purpose To perform automatic adjustment of various items in the scanner and the DP scanning sections. Perform adjustments using a new test chart (chart 1) when replacing ISC PWB, LED lamp PWB, ISU, CIS and/or DP main PWB.
  • Page 58 3NV-3 Item No. Description U411 Display Description Note Select Auto to automatically read and Target Set-up for obtaining the target value enter the target values using the Chart 1 test chart Initial setting: U425 Execute this mode when the Chart 2-2 DP Auto Adj Automatic adjustment of auto- matic document processor using...
  • Page 59 3NV-3 Item No. Description U411 7. Press the start key. Auto adjustment starts. * : When automatic adjustment has normally completed, [OK] is displayed. If a problem occurs during auto adjustment, error code is displayed and operation stops. Should this happen, determine the details of the problem and repeat the procedure from the begin- ning ( P.1-3-44).
  • Page 60 3NV-3 Item No. Description U411 * : If the target values are not obtainable automatically, manually enter the following target values in the following manner and perform adjustment. 1. Enter the target values which are shown at the bottom of the chart1original (P/N: 7505000005) executing maintenance item U425.
  • Page 61 3NV-3 Item No. Description U411 Method: [Table (Chart2)] 1. Enter the target values which are shown on the back of the Chart 2-1 original Chart2-1 (P/N: 302FZ56990) executing maintenance item U425. 2. Set a Chart 2-1original on the platen. 3. Enter maintenance item U411. 4.
  • Page 62 3NV-3 Item No. Description U411 Method: [DP FaceUp (Chart2)] 1. Set a specified original (P/N: 302AC68243) on the DP. Cut the trailing edge of the original. 3/16” 149±1mm 5 7/8”” 74±1mm 2 15/16” Figure 1-3-13 2. Enter maintenance item U411. 3.
  • Page 63 3NV-3 Item No. Description U411 Original to be used Display Description for adjustment (P/N) Executing the adjustment in the DP scan- 302AC68243/ ning section (second side) for magnifica- 303JX57010/ tion, leading edge timing, center line, MTF 303JX57020 filter, input gamma and matrix Input Executing the adjustment in the DP scan- 302AC68243...
  • Page 64 3NV-3 Item No. Description U411 Method: [DP Auto Adj] 1. Load A4/ letter paper. 2. Press the start key to output the original for adjustment. 3. Set the output the original for adjustment and press the start key. 4. Set the output the original for adjustment on the DP face up. 5.
  • Page 65 3NV-3 Item No. Description U411 Error Codes Codes Description DP main scanning direction skew error Main scanning direction magnification error Service call error DP paper misfeed error PWB replacement error Original error Input gamma adjustment original error Matrix adjustment original error Original for the white reference compensation coefficient error Lab value searching error Lab value comparing error...
  • Page 66 3NV-3 Item No. Description U425 Setting the target Description Enters the lab values that is indicated of the chart 1 (P/N: 7505000005) or chart 2 (P/N: 302FZ56990) used for adjustment. Purpose Perform data input in order to correct for differences in originals during automatic adjustment. Method 1.
  • Page 67 3NV-3 Item No. Description U425 Display Description White Setting the white patch for the original for adjustment Black Setting the black patch for the original for adjustment Gray1 Setting the Gray1 patch for the original for adjustment Gray2 Setting the Gray2 patch for the original for adjustment Gray3 Setting the Gray3 patch for the original for adjustment Setting the cyan patch for the original for adjustment...
  • Page 68 3NV-3 Item No. Description U425 Display Description Setting range Setting the L value 0.0 to 100.0 Setting the a value -200.0 to 200.0 Setting the b value -200.0 to 200.0 Setting: [Adjust Original] * : This setting is usually unnecessary. 1.
  • Page 69 3NV-3 Item No. Description U425 2. Measure the distance from the leading edge to the top of black belt 1 of the original at A, B and C. Measurement procedure 1) Measure the distance from the leading edge to the top of black belt 1 of the original at A (30 mm from the left edge), B (148.5 mm from the left edge) and C (267 mm from the left edge), respectively.
  • Page 70 3NV-3 Item No. Description U425 Method: [Chart2] 1. Press the start key. 2. Select the item. Figure 1-3-20 Display Description Entering the target values of the chart 2-1 (P/N: 302FZ56990) used for adjustment Entering the measurement value of the chart 2-2 (P/N: 302AC68243) used for adjustment Execution is not required Method: [CCD]...
  • Page 71 3NV-3 Item No. Description U425 Display Description N875 Setting the N875 patch for the original for adjustment N475 Setting the N475 patch for the original for adjustment N125 Setting the N125 patch for the original for adjustment Setting the cyan patch for the original for adjustment Setting the magenta patch for the original for adjustment Setting the yellow patch for the original for adjustment Setting the red patch for the original for adjustment...
  • Page 72 3NV-3 Item No. Description U425 Display Description Setting range Setting the L value 0.0 to 100.0 Setting the a value -200.0 to 200.0 Setting the b value -200.0 to 200.0 Setting: [Adjust Original] * : This setting is usually unnecessary. 1.
  • Page 73 3NV-3 Item No. Description U425 2. Measure the distance from the leading edge to the top of black belt 1 of the original at A, B and C. Measurement procedure 1) Measure the distance from the leading edge to the top of black belt 1 of the original at A (30 mm from the left edge), B (148.5 mm from the left edge) and C (267 mm from the left edge), respectively.
  • Page 74 3NV-3 Item No. Description U425 Setting: [DP] * : This setting is usually unnecessary. 1. Press the start key. 2. Enters the value that is indicated on the Lead 15.0 face of the chart using the +/- keys or Main Scan 15.0 numeric keys.
  • Page 75 3NV-3 Item No. Description U905 Checking counts by optional devices Description Displays the counts of DP, 1000-sheet or 4000-sheet finisher. Purpose To check the use of DP, 1000-sheet or 4000-sheet finisher. Method 1. Press the start key. 2. Select the device, the count of which is to be checked. The count of the selected device is displayed.
  • Page 76 3NV-3 Item No. Description U942 Setting of deflection for feeding from DP Description Adjusts the deflection generated when the document processor is used. Purpose Use this mode if an original non-feed jam, oblique feed or wrinkling of original occurs when the document processor is used.

  • Page 77: Original Misfeed Detection

    3NV-3 1-4 Troubleshooting 1-4-1 Original misfeed detection (1) Original misfeed indication When an original jams, the machine immediately stops operation and a message is shown on the machine operation panel. To remove the jammed original, open the DP top cover or switchback unit. Paper misfeed detection can be reset by opening and closing the respective covers to turn safety switch off and on.
  • Page 78 Code Contents Conditions 9000 No original feed DP feed sensor (DPFS) does not turn on within specified time during the first sheet feeding (Retry 5 times). 9001 DP original conveying jam DP timing sensor (DPTS) turns off within the specified time since the sensor turns on.

  • Page 79: Self-Diagnosis

    3NV-3 1-4-2 Self-diagnosis (1) Self-diagnostic function This unit is equipped with a self-diagnostic function. When a problem is detected, copying is disabled and the problem displayed as a code consisting of C followed by a number, indicating the nature of the problem. A message is also displayed requesting the user to call for service.
  • Page 80 3NV-3 Check procedures Code Contents Causes corrective measures DP lift motor 1. Execute U906 Separating 9040 DP lift motor going up error When the DP lift motor is driven, DP Operation Release . lift sensor 1 does not turn on within 2.
  • Page 81 3NV-3 Check procedures Code Contents Causes corrective measures DP lift motor 1. Execute U906 Separating 9050 DP lift motor going down error When the DP lift motor is driven, DP Operation Release . lift sensor 2 does not turn on within 2.

  • Page 82: Electrical Problems

    1-4-3 Electrical problems Troubleshooting to each failure must be made in the order of the numbered symptoms. Problem Causes Check procedures / corrective measures Reinsert the connector. Also check for continuity within the 1. Defective connector The LED lamp cable or poor con- connector cable.
  • Page 83 Problem Causes Check procedures / corrective measures Reinsert the connector. Also check for continuity within the 1. Defective connector DP switchback cable or poor con- connector cable. If none, replace the cable. tact in the connector. motor does not DP switchback motor and DP main PWB (YC14) operate.
  • Page 84 Problem Causes Check procedures / corrective measures (10) Reinsert the connector. Also check for continuity within the 1. Defective connector A message indicat- cable or poor con- connector cable. If none, replace the cable. tact in the connector. ing the cover is DP interlock switch and DP main PWB (YC6) open is displayed Replace the DP interlock switch.

  • Page 85: Mechanical Problems

    1-4-4 Mechanical problems Problem Causes / check procedures Corrective measures Check if the surfaces of the following pul- Clean with isopropyl alcohol. No primary original leys are dirty with paper powder. feed. DP forwarding pulley DP feed belt Check if the following pulleys is Check visually and replace any deformed.
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  • Page 87: Precautions For Assembly And Disassembly

    1-5 Assembly and Disassembly 1-5-1 Precautions for assembly and disassembly (1) Precautions Before starting disassembly, press the Power key on the operation panel to turn power off. Make sure that the Power indicator and the Memory indicator are off before turning off the main power switch. And then unplug the power cable from the wall outlet.

  • Page 88: Assembly And Disassembly

    1-5-2 Assembly and disassembly (1) Detaching and refitting the DP original feed belt and DP forwarding pulley Follow the procedure below to replace the DP original feed belt and DP forwarding pulley. Procedure 1. Open the DP top cover. DP feed DP top cover 2.
  • Page 89 DP feed belt unit 4. Remove the DP feed belt unit from the inserted parts of the DP feed unit. DP feed unit Figure 1-5-3 5. Remove two stop rings from the DP feed belt shaft 6. Remove the pulley, pin and DP feed holder from the shorter shaft side.
  • Page 90 DP feed belt shaft B 8. Remove the DP feed belt shaft B from the DP feed belt unit. 9. Remove the DP feed collar B and DP DP feed collar B feed belt from DP feed belt shaft B. DP feed belt unit DP original feed belt Figure 1-5-5...

  • Page 91: Detaching And Refitting The Dp Separation Pulley

    (2) Detaching and refitting the DP separation pulley Follow the procedure below to replace the DP separation pulley. Procedure DP upper DP top cover shift guide 1. Open the DP top cover. 2. Open the DP upper shift guide. Screw 3.

  • Page 92: Image Adjustment

    1-5-3 Image adjustment (1) Adjusting the angle of leading edge Perform the following adjustment if the leading edge of the copy image is laterally skewed. Procedure 3mm/4mm 3mm/4mm 1. Place an original on the DP and press the start key to make a test copy. 2.
  • Page 93 4. Turn adjusting screw at the rear side of the right hinge to adjust the DP position. For copy example 1: Turn the adjusting screw counterclockwise and move the DP to the inner side. For copy example 2: Turn the adjusting screw clockwise and move the DP to the front side.

  • Page 94: Adjusting The Angle Of Trailing Edge

    (2) Adjusting the angle of trailing edge Perform the following adjustment if the trailing edge of the copy image is laterally skewed. Procedure 1. Place an original on the DP and press the start key to make a test copy. 2.
  • Page 95 5. Adjust the height of DP. Loosen the nut. For copy example 1: Loosen the adjust- ing screw. For copy example 2: Tighten the adjust- ing screw. Amount of change per scale: Approx. 0.5 mm Retighten the nut. 6. Refit the DP rear cover. Adjuting screw Scale Figure 1-5-15...
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  • Page 97: Remarks On Dp Main Pwb Replacement

    3NV-4 1-6 Requirements on PWB Replacement 1-6-1 Remarks on DP main PWB replacement When replacing the DP main PWB, remove the EEPROM (YS1) from the DP main PWB that has been removed and then reattach it to the new DP main PWB. EEPROM Figure 1-6-1 DP main PWB When the DP main PWB is replaced with a new one, carry out the following procedure.
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  • Page 99: Original Feed Section

    2-1 Mechanical Construction 2-1-1 Original feed section The original feed section consists of the parts shown in figure. An original placed on the original table is con- veyed to the original conveying section. Original is fed by the rotation of the DP forwarding pulley and DP orig- inal feed belt.
  • Page 100 3NV-1 DPLS1 DPLS2 DPOS DPFS DPOFM DPOWSW DPLM DPMPWB Figure 2-1-2 Original feed section block diagram 2-1-2...

  • Page 101: Original Conveying Section

    2-1-2 Original conveying section The original conveying section consists of the parts shown in figure. A conveyed original is scanned by the optical section (CCD) of machine when it passes through the slit glass of machine. Figure 2-1-3 Original conveying section 1.
  • Page 102 RGST_SW YC4-A8 DPRS FEED_2B,2A,1A,1B DPOFM YC5-1,2,3,4 CNVY_2B,2A,1B,1A DPOCM YC14-1,2,3,4 CCD _TMG_SW DPTS YC4-B6 DPMPWB Figure 2-1-4 Original conveying section block diagram 2-1-4...

  • Page 103: Original Switchback/Eject Sections

    2-1-3 Original switchback/eject sections The original switchback/eject sections consists of the parts shown in figure. An original of which scanning is complete is ejected to the original eject table by the DP eject roller. In the case of duplex switchback scanning, an original is conveyed temporarily to the DP switchback tray and conveyed again to the original conveying section by the DP switchback roller.
  • Page 104 3NV-1 DPPSOL DPSBS DPSBM DPES DPFSSOL DPMPWB Figure 2-1-6 Original switchback/eject sections block diagram 2-1-6...

  • Page 105: Reverse Duplex Scanning Operation

    (1) Reverse duplex scanning operation The first side of original is scanned at the slit glass (machine main body). Slit glass: first side scanning Conveyed to the DP switchback tray by the DP switchback feedshift DP switchback tray guide. DP switchback feedshift guide The original is reversed by the DP switchback roller.
  • Page 106 This page is intentionally left blank. 2-1-8...

  • Page 107: Electrical Parts Layout

    2-2 Electrical Parts Layout 2-2-1 Electrical parts layout (1) PWBs Machine front Machine inside Machine rear Figure 2-2-1 PWBs 1. DP main PWB (DPMPWB) ....Controls electrical components. 2. DP LED PWB (DPLPWB) ..... Indicates presence of originals or an original jam. 2-2-1...

  • Page 108: Switches And Sensors

    (2) Switches and sensors Machine front Machine inside Machine rear Figure 2-2-2 Switches and sensors 1. DP open/close switch (DPOCSW) ..Detects the opening/closing of the DP. 2. DP interlock switch (DPILSW) ....Breaks the safety circuit when the document processor is opened;...

  • Page 109: Motors

    (3) Motors Machine front Machine inside Machine rear Figure 2-2-3 Motors 1. DP feed motor (DPOFM) ...... Drives the original feeding section. 2. DP conveying motor (DPOCM)..... Drives the original conveying section. 3. DP switchback motor (DPSBM) .... Drives the switchback roller. 4.

  • Page 110: Others

    (4) Others Machine front Machine inside Machine rear Figure 2-2-4 Others 1. DP switchback feedshift solenoid (DPFSSOL) ..........Operates the switchback feedshift guide. 2. DP switchback pressure solenoid (DPPSOL) ..........Operates the switchback pulley. 2-2-4...

  • Page 111: Dp Main Pwb

    2-3 Operation of the PWBs 2-3-1 DP main PWB YC14 Figure 2-3-1 DP main PWB silk-screen diagram 2-3-1...
  • Page 112 Connector Signal Voltage Description Connected to ENG_PAGES 0/3.3 V DC Pageset signal ISCPWB. ENG_RDY 0/3.3 V DC Ready signal ENG_SEL 0/3.3 V DC Select signal ENG_CLK 0/3.3 V DC(pulse) Clock signal ENG_SI 0/3.3 V DC(pulse) Serial communication data signal ENG_SO 0/3.3 V DC(pulse) Serial communication data signal DP_OPEN 0/3.3 V DC...
  • Page 113 Connector Signal Voltage Description YC4_A ANODE 3.3 V DC 3.3 V DC power output to DPLS1 Connected to Ground DP lift sensor LF_UPSW 0/3.3 V DC DPLS1: On/Off 1, DP feed Ground sensor, DP registration FD_SW 0/3.3 V DC DPFS: On/Off sensor, DP 3.3V 3.3 V DC...
  • Page 114 Connector Signal Voltage Description LIFT3_OUT2 0/24 V DC (pulse) DPLM drive control signal Connected to LIFT1_OUT2 0/24 V DC (pulse) DPLM drive control signal DP feed motor, DP lift LIFT2_OUT1 0/24 V DC (pulse) DPLM drive control signal motor. LIFT4_OUT1 0/24 V DC (pulse) DPLM drive control signal 24 V DC 24 V DC power output to DPILSW...

  • Page 115: Appendixes

    3NV-3 2-4 Appendixes 2-4-1 Appendixes (1) List of maintenance parts Maintenance part name Alternative Part No. part No. Name used in service manual Name used in parts list BELT PF 303LL07490 3LL07490 DP paper feed belt PULLEY LF 303M407480 3M407480 DP forwarding pulley PULLEY SEPARATION 303LL07190...

  • Page 116: Periodic Maintenance Procedures

    (2) Periodic maintenance procedures 300K/600K/ Maintenance User Section Points and cautions Page part/location call 900K/1200K Test copy Perform at the maxi- Test Test and test mum copy size copy copy Maintenance User 300K/600K/ Section Points and cautions Page part/location call 900K/1200K Original DP paper feed belt...
  • Page 117 Maintenance User 300K/600K/ Section Points and cautions Page part/location call 900K/1200K Original DP original length Clean Clean Air blow or clean with a dry cloth. table switch Maintenance User 300K/600K/ Section Points and cautions Page part/location call 900K/1200K Covers Covers Clean Clean Clean with alcohol.

  • Page 118: Wiring Diagram

    3NV-1 (3) Wiring diagram 2-4-4...

  • Page 119: Installation Guide

    1-1 INSTALLATION GUIDE INSTALLATION GUIDE FOR DOCUMENT PROCESSOR...

  • Page 120: Guide D'installation

    INSTALLATION GUIDE GUIDE D’INSTALLATION GUÍA DE INSTALACION INSTALLATIONSANLEITUNG GUIDA ALL’INSTALLAZIONE 安装手册 설치안내서 設置手順書 DP-770(B) DP-771(B) DP-772(B) for Color MFP 30/30ppm,35/35ppm,45/45ppm,55/50ppm for Black & White MFP 35ppm,45ppm,55ppm...
  • Page 122 Pin ................ 1 Caution label “Original face up!”......1 Original mat............1 M4 × 14TP screw ..........8 DP relay PWB ............ 1 Fixing fitting (width: 38.5 mm) ..2 (DP-770(B)) Left hinge cover ..........1 M3 × 8 screw ............2 1 (DP-771/772) Right hinge cover ..........
  • Page 123 O. Memory DIMM (1GB) (except 120V specification) ....... 1 The memory DIMM must be expanded separately before using the “Dual scan function” on the DP-771. Order a memory DIMM in the service parts. For details, see the instructions on page 12. O.
  • Page 124 Guide are for DP-771/772. 14TP screws (G). REMARQUE Procédure Mettre en place la fixation (DP-770(B)) 1.Aligner les saillies (1) de chacune des Veillez à retirer les morceaux de bande adhé- Avant de commencer l'installation, s'assurer de sive et/ou les matériaux de rembourrage des mettre la machine hors tension et de pièces de fixation (C) avec les trous (2) sur...
  • Page 125 G(M4x14) G(M4x14) G(M4x14) G(M4x14) C (C*) C (C*) Attach the fixing fitting (DP-771/772) Install the DP 5.Install DP (A) onto the MFP securely with pin 1.Align the projections (1) on the right fixing fit- 3.Align hinge hole (3) of DP (A) with pin (4) of (F) and two M4 ×...
  • Page 126 G(M4x14) Install the angle control fitting To adjust DP open-close angle 30 degrees 9.Remove stop ring (11) of angle control fitting To adjust DP open-close angle 60 degrees 7.Open the upper cover (6) of the DP (A). (D) that has been installed in step 6 to 6.Install angle control fitting (D) at the rear side 8.Remove the four screws (7) and (8) .
  • Page 127 Connect the DP signal line (DP-770(B) only) 14.Remove the DP cable connection cap (15) Insert shaft (12) into the rear side of the right hinge. For the DP-771/772, proceed to step 13 on from the DP cable connection cover (14).
  • Page 128 15.Pass the DP signal line cable (16) through 16.Pass the DP signal line cable (16) along the 17.Attach the DP cable cover (E) to the DP the hole in DP cable connection cover (14). groove in the DP cable cover 1 (E-1). Install cable connection cover (14) and install the Connect the DP signal line connector (17) to the DP cable cover 2 (E-2).
  • Page 129 Connect the DP signal line (DP-771/772 only) 14.Remove the screw (21) and remove the DP 15.Remove the DP cable connection cap (35) 13.Remove the 4 screws (19).Remove the DP cable connection cover (22). from the DP cable connection cover (22). relay PWB cover (20).
  • Page 130 16.Pass the DP signal line cable (23) and the DP-771 only Installing the DP relay PWB 17.Remove the two screws (27).Remove the 18.Connect connector (29) on the DP relay CIS data line cable (24) through the hole in DP cable connection cover (22).Connect the bracket (28).
  • Page 131 N(M3x8) DP-771 only DP-772 only 20.Plug the CIS data line (24) into the connetor 19.Secure the DP relay PWB (M). Secure it with 19.Secure the DP relay PWB (M). Secure it with (31) on the DP relay PWB (M). the bracket (28) and the two screws (27) the two M3 ×...
  • Page 132 21.Pass the DP signal line cable (23) along the groove in the DP cable cover 1 (E-1).Pass the CIS 22.Attach the DP cable cover (E) to the DP data line cable (24) along the other groove.Install the DP cable cover 2 (E-2). cable connection cover (22) and install the DP cable connection cover (22) using the NOTICE...
  • Page 133 Steps for expanding the memory DIMM 25.Insert the memory DIMM (O) into the memory slot (YS2) of the main PWB. (1GB)(35, 45 and 55 ppm monochrome (Insert all the way until it clicks) machines only) (DP-771 only) 26.Replace the upper rear cover (33) of the MFP using the 8 screws (32). 24.Remove the 8 screws (32) and remove the upper rear cover (33) of the MFP.
  • Page 134 Fasten the original mat. 27.Place original mat (B) with its Velcro (34) upward over the contact glass. Align original mat (B) corner that has 90 degrees of angle with the inner left corner of the original instruction panel. 28.Close DP (A) and attach original mat (B) onto it with Velcro. Fixer la plaque d’original.
  • Page 135 Instalación de la cubierta de las bisagras 30.Instale la cubierta de la bisagra derecha (I) (DP-771/772 solamente) usando el tornillo M3 × 8 NEGRO (J). Para el DP-770(B), vaya al paso 31 de la página 29.Instale la cubierta de la bisagra izquierda (H). Installieren der Scharnierabdeckung 30.Die rechte Scharnierabdeckung (I) mit der...
  • Page 136 Adhere the label 32.Adhere Label “Operation procedure” (K) of 33.Adhere Caution label “Original face up!” (L) 31.Clean the label on the original table with which the language corresponding to the of which the language corresponding to the alcohol. destination of the MFP onto the existing destination of the MFP onto the label on the label on the original table.
  • Page 137 20mm 20mm 20mm 20mm [Operation check] 1.To check the machine operation, prepare original (a) where 4 lines (b) are drawn 20 mm from the edges of the A3 sheet and 1 line (c) is drawn at its center. 2.Connect the power plug of the MFP into the wall outlet and turn the main power switch on. 3.Set the original (a) on the DP and perform a test copy to check the operation and the copy example.
  • Page 138 20mm 20mm 20mm 20mm 4.Compare original (a) with the copy example. If the gap exceeds the reference value, perform the following adjustments according to the type of the gap. Check images of the DP after checking and adjusting images of the MFP. For details, see the service manual. NOTICE: If there is any image fogging, adjust the U068 DP scanning position.
  • Page 139 Be sure to adjust in the following order. If not, the adjustment cannot be performed correctly. For checking the angle of leading edge, see page 20. <Reference value> Simplex copying: within ±3.0 mm; Duplex copying: within ±4.0 mm For checking the angle of trailing edge, see page 23. <Reference value>...
  • Page 140 For checking the magnification, see page29. <Reference value> Within ±1.5% For checking the leading edge timing, see page 31. <Reference value> Within ±2.5 mm For checking the center line, see page 33. <Reference value> Simplex copying: within ±2.0 mm; Duplex copying: within ±3.0 mm Pour vérifier l’agrandissement, reportez-vous à...
  • Page 141 [Checking the angle of leading edge] 1.Check the horizontal gap between line (1) of original (a) and line (2) of copy example positions. If the gap exceeds the reference value, adjust the gap according to the following procedure. <Reference value> For single copying: The horizontal gap of line (2) should be within ±3.0 mm. For duplex copying: The horizontal gap of line (2) should be within ±4.0 mm.
  • Page 142 4.Perform a test copy. DP-770(B): Déposer la fixation d'angle (assurant le contrôle de l'ouverture) (D). Desserrer les 2 vis TP M4 × 14 (G) sur les fixations gauche et droite (C). DP-771/772: Déposer le couvercle de la charnière gauche (H) et la fixation d'angle (assurant le contrôle de l'ouverture) (D). Desserrer les 2 vis TP M4 × 14 (G) sur les fixa- tions gauche et droite (C)(C*).
  • Page 143 5.Repeat the steps above until the gap of line (2) of copy example shows the following reference values. <Reference value> For single copying: The horizontal gap of line (2) should be within ±3.0 mm. For duplex copying: The horizontal gap of line (2) should be within ±4.0 mm. 6.After adjustment is completed, retighten two M4 ×...
  • Page 144 3mm/4mm 3mm/4mm [Checking the angle of trailing edge] 1.Check the gap between line (1) of original (a) and line (2) of copy example. If the gap exceeds the reference value, perform the following adjustment. <Reference value> For simplex copying: Within ±3.0 mm For duplex copying: Within ±4.0 mm [Vérification de l’angle du bord arrière] 1.Vérifiez l’écart entre la ligne (1) de l’original (a) et la ligne (2) de l’exemple de copie.
  • Page 145 2.Open the upper cover (3) of the DP (A). 4.Adjust the height of DP. Amount of change per scale: Approx. 0.5 3.Remove the 3 TP screws (4) and the screw Loosen the nut (8). mm (10) (5), and remove the strap (6) from the rear For copy example (f): Loosen the adjusting Retighten the nut (8).
  • Page 146 3mm/4mm 3mm/4mm 7.Make a proof copy again. 8.Repeat steps 1 to 6 until line (2) of copy example shows the following the reference values. <Reference value> For simplex copying: Within ±3.0 mm For duplex copying: Within ±4.0 mm 7.Effectuez à nouveau une copie de test. 8.Répétez les étapes 1 à...
  • Page 147 [Automatic adjustment using the original for adjustment] 4.Set the original on the DP face down and press the Start key to carry If there is no DP auto adjustment original. out rear-side adjustment.(DP-771/772 only) 1.Set the maintenance mode U411, select [DP Auto Adj] and press the 5.If OK appears on the display, the adjustment is completed.
  • Page 148 149 1mm A(149 5mm) 74 1mm Using a DP auto adjustment original 3.If OK appears on the display, the adjustment is completed. 1.Direct F and R of the DP auto adjustment original upward, and set the If ERROR XX appears, the adjustment failed. Check the original set original from the place where F and R are marked.
  • Page 149 149 1mm A(149 5mm) 74 1mm 4.After completing the surface adjustment, direct F and R of the DP auto 6.If OK appears on the display, the adjustment is completed.(DP-771/ adjustment original downward and set the original by inserting the side 772 only) where the F and R are marked into the DP first.(DP-771/772 only) If ERROR XX appears, the adjustment failed.
  • Page 150 1.원고 (a) 선 (1) 과 샘플 카피의 선 (2)(3) 의 차이를 확인합니다 . Sub Scan(F) ： 스캔 부주사등배도의 조정 （표면） 차이가 기준이외의 경우 , 다음 순서로 조정을 합니다 . Sub Scan(B) ： 스캔 부주사등배도의 조정 （뒷면） (DP-770(B)) ＜기준치＞ Main Scan(CIS):CIS 의 스캔 주주사등배도의 조정 (DP-771/772) 부주사...
  • Page 151 -1.5% +1.5% 3. Adjust the values. 5. Repeat the steps 2 to 4 above until the gap of line (2) (3) of copy For the shorter length copy example (h)(j): Increases the value. example shows the reference value. For the longer length copy example (i)(k): Decreases the value. <Reference value>...
  • Page 152 CIS Tail: Permet de régler la synchronisation du bord arrière pour le balayage par le CIS.(DP-771/772) Écart vertical de la ligne (2) : ±2,5 mm Back Head: Permet de régler la synchronisation du bord de tête (arrière)(DP-770(B)) Back Tail: Permet de régler la synchronisation du bord arrière (arrière)(DP-770(B)) [Cambio de la sincronización de borde superior]...
  • Page 153 2.5mm 2.5mm 3.Adjust the values. 5.Repeat the steps 2 to 4 above until the gap of line (2) of copy example For the faster leading edge timing, copy examples (l): Decreases the shows the reference value. value. <Reference value> For the slower leading edge timing, copy examples (m): Increases the Vertical gap of line (2): within ±2.5 mm value.
  • Page 154 2mm/3mm 2mm/3mm [Checking the center line] 2.Use the maintenance mode U072 to adjust the timing. 1.Check the gap between center line (1) on original (a) and center line Front: Adjusts the center line (surface) (2) of copy example. If the gap exceeds the reference value, adjust the Back: Adjusts the center line (rear side) gap according to the following procedure.
  • Page 155 2mm/3mm 2mm/3mm 3. Adjust the values. 5.Repeat the steps 2 to 4 above until the gap of line (2) of copy example If the center moves more front, copy example (n): Increases the value. shows the reference value. If the center moves inner, copy sample (o): Decreases the value. <Reference value>...
  • Page 156 MEMO...
  • Page 157 MEMO...
  • Page 159 2013. 7 303NW56730-01...
  • Page 160 8F, No. 288 Nanjing Road West, Huangpu District, Phone: +1-305-421-6640 Shanghai,200003, China Fax: +1-305-421-6666 Phone: +86-21-5301-1777 Fax: +86-21-5302-8300 KYOCERA Document Solutions Canada , Ltd. KYOCERA Document Solutions 6120 Kestrel Rd., Mississauga, ON L5T 1S8, Canada (Thailand) Corp., Ltd. Phone: +1-905-670-4425...
  • Page 161 KYOCERA Document Solutions South Africa (Pty) Ltd. KYOCERA Document Solutions Espana, S.A. KYOCERA House, Hertford Office Park, Edificio Kyocera, Avda. de Manacor No.2, 90 Bekker Road (Cnr. Allandale), Midrand, South Africa 28290 Las Matas (Madrid), Spain Phone: +27-11-540-2600 Phone: +34-91-6318392...

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