Minolta DI750 - MANUAL SERVICE Service Manual
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Minolta DI750 - MANUAL SERVICE Service Manual

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Di750
(Ver.3)
SERVICE MANUAL
[
]
FIELD SERVICE

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Summary of Contents for Minolta DI750 - MANUAL SERVICE

  • Page 1 Di750 (Ver.3) SERVICE MANUAL FIELD SERVICE...
  • Page 2 There are using both Official Options name and Popular Options name in the Di750 Service Manual and Option Service Manual. Official Options name Popular Options name EDH–2 RADF FN–104 FN–4 Cover Inserter A In-System Writer C–305/C-305L LT and LCT TMG-1 (Hard Disk Drive) PK-1...

  • Page 3: Table Of Contents

    CONTENTS CONTENTS 1.ADJUSTMENT SAFETY AND IMPORTANT WARNING ITEMS ... C-1 HOW TO USE THIS SECTION ........1-1 IMPORTANT NOTICE ..........C-1 [1] Scope and Precautions ......... 1-1 DESCRIPTION ITEMS FOR DANGER, WARNING ADJUSTMENTS MADE WHEN AND CAUTION ............. C-1 REPLACING PARTS ..........1-2 SAFETY WARNINGS ...........
  • Page 4 CONTENTS [5] Output checklist ..........1-92 [32] FNS Adjusting the Folding Force OTHER ADJUSTMENTS ......... 1-98 (FN-4 only) ..........1-139 [1] Centering Adjustment ........1-98 [33] FNS Adjusting the Mount Location of the Folding [2] Adjusting the LCT Paper Feed Roller Pressure Knife Motor (FN-4 only) ......
  • Page 5 CONTENTS Di750 CONNECTOR LAYOUT DRAWING ....4-10 [1] Read Section ..........4-10 [2] Charging Corona Wire Unit ......4-10 [3] Drum Unit ............ 4-11 [4] Cleaning Unit ..........4-11 [5] Tray 1,2,3 ............. 4-12 [6] Vertical Conveyance Section ...... 4-12 [7] By-pass Feed Section .........
  • Page 6 CONTENTS Blank page...

  • Page 7: Safety And Important Warning Items

    Changes may have been made to this copier to improve its performance after this Service Manual was printed. Accordingly, Minolta Corporation, makes no representations or warranties, either ex- pressed or implied, that the information contained in this Service Manual is complete or accurate. It is understood that the user of this Service Manual must assume all risks or personal injury and/or damage to the copier while servicing the copier for which this Service Manual is intended.
  • Page 8 [1] MODIFICATIONS NOT AUTHORIZED 1. Advance Preparation for Safety Checks BY Minolta CAUTION: Minolta copiers are renowned for their high reliability. This (1) Wear clothing that facilitates work and is designed reliability is achieved through high-quality design and a solid for safety.
  • Page 9 SAFETY AND IMPORTANT WARNING ITEMS [3] HANDLING OF MATERIALS FOR SER- 3. Description of Safety Checks VICING CAUTION: CAUTION: Drum cleaner (alcohol-based) and roller (1) Before performing safety check work, read all rel- cleaner (acetone- based) are highly flam- evant documentation (Service Manual, technical no- mable and must be handled with care.
  • Page 10 SAFETY AND IMPORTANT WARNING ITEMS SAFETY INFORMATION IMPORTANT INFORMATION The Center for Devices and Radiological Health (CDRH) of the U.S. Food and Drug Administration implemented regulations for laser products manufactured since August 1, 1976. Compliance is mandatory for products marketed in the United States. This copier is certified as a "Class 1"...
  • Page 11 SAFETY AND IMPORTANT WARNING ITEMS SAFETY CIRCUITS [2] Protection by L2, L3, and L4 (fixing This machine is provided with the following safety circuits to prevent machine faults from resulting in heaters) overheating prevention serious accidents. circuit [1] Overall protection circuit [2] L2, L3, and L4 (fixing heater lamps) overheating prevention circuit These safety circuits are described below to provide...
  • Page 12 SAFETY AND IMPORTANT WARNING ITEMS Protection by the hardware circuit The output voltages from TH1 and TH2 (fixing temperature sensor 2), TH3 (fixing temperature sensor 3), and TH4 (fixing temperature sensor 4) are compared with the abnormality judgement reference value in the comparator circuit. If the output voltage from TH1, TH2, TH3, or TH4 exceeds the reference value, L2, L3, L4, and RL1 are turned off in hardware means.
  • Page 13 SAFETY AND IMPORTANT WARNING ITEMS HANDLING OF THE PC DRUM During Transportation/Storage: • Use the specified carton whenever moving or storing the PC Drum. • The storage temperature is in the range between –20°C and +40°C. • In summer, avoid leaving the PC Drum in a car for a long time. Handling: •...
  • Page 14 SAFETY AND IMPORTANT WARNING ITEMS 3. Soak a small amount of either ethyl alcohol or 5. Finaly, genllyw wipe the entire surface of the PC isopropyl alcohol into a clean, unused dust-free Drum. cotton pad which has been folded over into quarters.
  • Page 15 SAFETY AND IMPORTANT WARNING ITEMS INDICATION OF WARNING ON THE MACHINE Caution labels shown below are attached in some areas on/in the machine areas. When accessing these areas for maintenance, repair, or adjustment, special care should be taken to avoid burns and shock hazards.
  • Page 16 SAFETY AND IMPORTANT WARNING ITEMS Unplug the machine before removing platen glass. WARNING <Read Section> DANGER Debrancher le copieur avant de retirer la vitre d'exposition. Vor Entfernen des Vorlagenglases Netzstecker ziehen. WARNUNG Desenchufe la maquina antes de quitar el vidrio. ADVERTENCIA Estrarre la spina dalla presa prima di rimuovere il vetro di esposizione.
  • Page 17 SAFETY AND IMPORTANT WARNING ITEMS <Tray 1> <Tray 2> CAUTION CAUTION DO NOT put your hand between the main body and tray; otherwise you may be injured. <Tray 3> CAUTION Use care after opening the paper exit outlet. DO NOT put your hands into the paper exit outlet as you may be injured.
  • Page 18 SAFETY AND IMPORTANT WARNING ITEMS CAUTION WARNING WARNING Unplug the machine before removing panels. D brancher lÕappareil avant de retirer les panneaux arri res. Desenchufe la m‡quina antes de quitar los paneles. Desconecte a unidade da tomada antes de remover os pain is. Unplug the machine before removing panels.
  • Page 19 SAFETY AND IMPORTANT WARNING ITEMS WARNING Unplug the machine before removing panels. D brancher lÕappareil avant de retirer les panneaux arri res. Desenchufe la m‡quina antes de quitar los paneles. Desconecte a unidade da tomada antes de remover os pain is. Unplug the machine before removing panels.
  • Page 20 ADJUSTMENT...
  • Page 21 Blank page...

  • Page 22: How To Use This Section

    ADJUSTMENT HOW TO USE THIS SECTION [1] Scope and Precautions Take care not to damage the drum with tools and so on. This section provides detailed information about the Do not touch IC pins with bare hands. adjustment items and procedures. Before addressing customer complaints, perform the following checks: Check whether the power supply voltage meets the specifications.

  • Page 23: Adjustments Made When Replacing Parts

    ADJUSTMENT ADJUSTMENTS MADE WHEN REPLACING PARTS Adjustments (including checks) and settings are not only required when a customer complaint about the copy image quality is received, but also after replacing or reassembling parts. [How to Read Tables] Components of the tables used in this section are as follows: Mode Adjustment mode to be selected.

  • Page 24: List Of Adjustment Items

    ADJUSTMENT LIST OF ADJUSTMENT ITEMS Process High Voltage High Voltage Auto 1-52 adjust- Adjustment Adjustment ment Drum Peculiarity Blade setting mode 1-53 Adjustment Auto drum potential 1-54 adjustment Auto maximum density 1-54 adjustment (Dmax adjustment) Auto dot diameter 1-55 adjustment LD1 offset adjustment 1-55 LD2 offset adjustment...
  • Page 25 ADJUSTMENT 1-80 Finisher Stapling and folding stopper adjustment (FN-4 only) adjust- Folding stopper adjustment (FN-4 only) 1-80 ment 1-81 Cover sheet tray size adjustment (Cover Inserter A only) Trimmer stopper adjustment (TMG-1only) 1-81 Centering adjustment 1-98 1-101 Paper up/down plate horizontal adjustment Skew adjustment 1-105 Tray Spring Pressure Adjustment...

  • Page 26: Lcd Adjustment

    LCD ADJUSTMENT LCD ADJUSTMENT [1] Control Panel Adjustment [2] Panel Contrast/Key Sound Adjustment Enter the key operator mode and select " Control Enter the key operator mode and select " Panel con- panel adjustment" to adjust the LCD touch panel. trast/Key sound adjustment"...

  • Page 27: Settings And Adjustments Made With Thep Function

    P ADJUSTMENT SETTINGS AND MODE CHANGING ADJUSTMENTS MADE MENU WITH THE P FUNCTION [1] Mode Selection You can select a mode from the following [Mode The P function allows you to perform following checks changing menu: Select mode] without turning using the Utility button: OFF and ON the power switch.

  • Page 28: Mode

    25 ADJUSTMENT 25 MODE [1] Selecting and Canceling the 25 [2] Setting Software DIP Switches Mode Procedure Bring up the Software DIP SW Setting screen and This machine has an adjustment mode called the “25 set software DIP switches. Mode.” Select this mode to rewrite data in the non- volatile memory or make various settings.
  • Page 29 25 ADJUSTMENT < List of Software Switches > Initial Value DIPSW No. Function North Japan Europe America Condition for stopping copying after indication of toner supply Ditto Method for stopping copying after indication of toner supply DIPSW 1 Ditto Inhibition of copying when PM count is Inhibited Not inhibited reached...
  • Page 30 25 ADJUSTMENT Initial Value DIPSW No. Function North Japan Europe America Toner concentration threshold Ditto – – – DIPSW5 – – – 2 dot PWM density in photo mode Ditto – – – – – – Transfer/separation corona unit output * 10 * 10 for plain paper...
  • Page 31 25 ADJUSTMENT Initial Value DIPSW No. Function North Japan Europe America Page memory allocation at power on * 19 * 19 Ditto * 19 * 19 Page memory allocation at job start * 28 * 28 DIPSW10 – – – –...
  • Page 32 25 ADJUSTMENT Initial Value DIPSW No. Function North Japan Europe America Size detection 5 (main unit) B4 · 11 x 17/ 8K/16K B5 · 8.5 x 11 – – – – – – Size detection 5 (by-pass feed) B4 · 11 x 17/ 8K/16K DIPSW14 B5 ·...
  • Page 33 25 ADJUSTMENT Initial Value DIPSW No. Function North Japan Europe America – – – – – – – – – – – – – – – – – – – – – – – – DIPSW 19 PZ faulty part isolation Normal Unavailable PU faulty part isolation...
  • Page 34 25 ADJUSTMENT Initial Value DIPSW No. Function North Japan Europe America – – – – – – Toner density selsction of developer * 30 * 30 Ditto * 30 * 30 Correspondence of firmware version up older than 5.0 5.0 or later DIPSW23 of Pi7500 Tray heater control during power pn...
  • Page 35 25 ADJUSTMENT * 1 Condition for stopping copying after indication of * 5 Electrode cleaning cycle (after power is turned toner supply request Mode Mode 20,000 copies Stops after printing 1500 copies 30,000 copies Stops after printing 3000 copies 40,000 copies Stops after printing 4000 copies 50,000...
  • Page 36 25 ADJUSTMENT * 9 2 dot PWM table in photo mode * 12 T ransfer/separation corona unit output for thin paper This bit is used when “Thin” is selected for “Paper Mode type/special size setting” in the key operator mode. 1 dot PWM When “No specification”...
  • Page 37 25 ADJUSTMENT * 15 Fixing upper roller initial rotation * 18 Copy count limit Fixing may be insufficient in the morning if the Mode temperature of the place where the machine is No limit installed is low. To prevent this, increase the 1 copy warm-up time (fixing upper roller initial rotation 3 copies...
  • Page 38 25 ADJUSTMENT * 23 Maximum number of sheets that can be stapled • To copy only image size area determined by the APS sensor, select “Erase the area out- Mode 15-2 15-1 side the original.” 50 sheets • To copy the entire area of the original to the 45 sheets selected paper, select “Do not erase the area 40 sheets...
  • Page 39 25 ADJUSTMENT * 28 Page memory allocation at job start * 26 WT summer time setting When this mode is selected and the copy mode Mode 17-3 17-2 17-1 17-0 use the page memory, the page memory is allocated at the start of a job so that the data that 0 minute 10 minutes has been read is output normally at occurence of...
  • Page 40 25 ADJUSTMENT [3] Setting the Paper Size Setting the non-standard size When the LCT paper type is changed, it must be stored Step Operation in the main unit. This setting is effective when an op- Enter the 25 mode. tional LCT is added. [25 Mode Menu Screen] Select “...

  • Page 41: Pm Count Resetting

    25 ADJUSTMENT 3. Setting the wide paper [4] PM Count Resetting Care should be taken not to reset the PM count by Step Operation mistake. Enter the 25 mode. [25 Mode Menu Selection] Step Operation Select Paper size setting. Enter the 25 mode. [Paper Size Setting Mode Screen] [25 Mode Menu Screen] Press the...

  • Page 42: Setting The Pm Cycle

    25 ADJUSTMENT [5] Setting the PM Cycle This function allows you to change the PM cycle. Caution: The PM cycle is factory-set. Use this function to change the factory-set PM cycle. Step Operation Enter the 25 mode. [25 Mode Menu Screen] Select “...

  • Page 43: Collecting Data

    25 ADJUSTMENT [6] Collecting Data Viewing Collected Data 5 to Collected Data 11 This function allows you to view various data retained by the machine. Step Operation Enter the 25 mode. Data that can be Viewed [25 Mode Menu Screen] Data Type Preparation Select “...
  • Page 44 25 ADJUSTMENT Details on Display Data (1) Collecting data No.1 to No.3: Total/copy/print counts of each paper size Destination Maximum count Remarks Europe Japan U.S.A. 17x22 99999999 All counters are 8-digit counters. 11x17 99999999 8.5x14 B4 (8K) 99999999 8.5x11 99999999 5.5x8.5 B5 (16K) 99999999...
  • Page 45 25 ADJUSTMENT (2) Collecting data No.4: RADF mode Maximum Items Remarks count 99999999 Number of originals fed in ADF mode All counters are 8-digit counters. Number of originals fed in RADF mode 99999999 Number of 1-sided SDF original fed 99999999 Number of 2-sided SDF original fed 99999999 Number of 1-sided mixed original fed...
  • Page 46 25 ADJUSTMENT (4) Collecting data No.6: JAM count / Collecting data No.10: JAM count of each section Description of jam position Code displayed Maximum display when display of Counting condition count Location of jam jam code is operation selected by 25- panel mode DIP switch By-pass paper feed...
  • Page 47 25 ADJUSTMENT Description of jam position Code displayed Maximum display when display of Counting condition count Location of jam jam code is operation selected by 25- panel mode DIP switch 62-4 999999 62-5 999999 62-6 999999 62-7 999999 62-8 999999 62-9 999999 62-10...
  • Page 48 25 ADJUSTMENT Description of jam position Code displayed Maximum display when display of Counting condition count Location of jam jam code is operation selected by 25- panel mode DIP switch 71-2 999999 72-38 999999 72-39 999999 72-40 999999 72-41 999999 72-42 999999 72-43...
  • Page 49 25 ADJUSTMENT (5) Collecting Data No.7:Count of each copy mode Maximum Counting condition Item count 99999999 All counters are 8-digit counters. 1-1 mode 99999999 1-2 mode 99999999 2-1 mode 2-2 mode 99999999 ADF1-1 mode 99999999 ADF1-2 mode 99999999 99999999 Mixed original mode 99999999 SDF mode 99999999...
  • Page 50 25 ADJUSTMENT Maximum Counting condition Item count All counters are 8-digit counters. Preset magnification E2 99999999 Preset magnification E1 99999999 Preset magnification R4 99999999 Preset magnification R3 99999999 Preset magnification R2 99999999 Preset magnification R1 99999999 User lens mode 1 99999999 User lens mode 2 99999999...
  • Page 51 25 ADJUSTMENT Maximum Counting condition Item count 99999999 Numbering 99999999 Set quantity 1 99999999 Set quantity 2-5 99999999 Set quantity 6-10 Set quantity 11 or more 99999999 99999999 Total period of time during Time while power remote 1 is on which image control board is energized (remote power supply 1 is ON).
  • Page 52 25 ADJUSTMENT Maximum Counting condition Item count Time duringwarm up time 99999999 Total period of time during which fixing unit heater is ON when machine is not ready for fusing. The count is incremented by 1 per second. Time during front door open 99999999 Total period of time during which front door is open.
  • Page 53 25 ADJUSTMENT Maximum Counting condition Item count 99999999 Total period of time during Time during APS sensor on which APS sensor is ON. The count is incremented by 1 per second. Data is output per minute.. 99999999 N of main tray used jobs Job count 99999999 N of sub tray tray used jobs...
  • Page 54 25 ADJUSTMENT Maximum Counting condition Item count 99999999 Wide paper count (A3W) 99999999 Wide paper count (A4W) 99999999 Wide paper count (A4RW) 99999999 Wide paper count (A5W) 99999999 Wide paper count (Others) 99999999 Punch 99999999 Z-Folding 1 - 33...
  • Page 55 25 ADJUSTMENT (6) Collecting data No.8: SC count / Collecting data No.11: SC count of each section Maximum Toruble Remarks Description count code 9999 All counters are 4-digit Paper feed MT EM counters 9999 LCT conveyance MT EM 9999 Loop roller motor fuse blowing Tray 1 up error 1 9999 9999...
  • Page 56 25 ADJUSTMENT Maximum Toruble Remarks Description code count 9999 Drum temperature sensor grounding 9999 Drum heater open detection 1 9999 Drum heater open error detection 2 9999 Charging EM 9999 Transfer EM 9999 Separation EM 9999 High-voltage 24 V fuse blowing 9999 Maximum density correction error 1 9999...
  • Page 57 25 ADJUSTMENT Maximum Toruble Remarks Description code count 9999 Fixing upper roller high temperature error detection Fixing heat roller high 9999 temperature error detection 9999 Fixing upper roller low temperature error detection 9999 Fixing heat roller low temperature error detection Fixing upper roller sensor error 9999 detection...
  • Page 58 25 ADJUSTMENT Maximum Toruble Remarks Description code count Expansion device access error 9999 Compression device access error 9999 Filter factor error 9999 Memory in data flow 9999 Data flow memory mode 9999 SVV off error 9999 Black/white collection error 9999 9999 Level adjustment error 9999...
  • Page 59 25 ADJUSTMENT Maximum Toruble Remarks Description count code 9999 Printer control 12V detection Excessive AC voltage detection 9999 9999 5V fuse blowing detection 9999 SD/MC fuse blowing detection 1 9999 SD/MC fuse blowing detection 9999 Initial communication failure 9999 Operation panel ISW not written 9999 Communication (send) error 9999...
  • Page 60 25 ADJUSTMENT Maximum Toruble Remarks Description count code Sheet feeder up motor driving error 9999 Sub-CPU reception error 9999 9999 Main CPU reception error 9999 Printer control ISW not written 9999 VIF control ISW not write ISW time-out 9999 9999 ISW data error ISW write error 9999...

  • Page 61: Copy Count By Parts To Be Replaced (Fixed Parts)

    25 ADJUSTMENT [7] Copy Count by Parts to be Replaced (Fixed Parts) This function allows you to display or rest the copy count for a fixed part or data. Step Operation Enter the 25 mode. [25 Mode Menu Screen] Select “ Parts counter.”...
  • Page 62 25 ADJUSTMENT Maximum Part name Part No. Counting condition count Charging grid 40143009 99999999 25DIPSW8-6 =0: Count 1 per ejected paper for single sided, 2 for double sided =1: For A3, 11x17, count 2 per ejected paper for single sided, 4 for double sided Charging unit cleaning 40143022 99999999...
  • Page 63 25 ADJUSTMENT Maximum Part name Part No. Counting condition count Fixing claws lower 40143002 99999999 25DIPSW8-6 =0: Count 1 per ejected paper for single sided, 2 for double sided =1: For A3, 11x17, count 2 per ejected paper for single sided, 4 for double sided Heat insu.
  • Page 64 25 ADJUSTMENT Maximum Part name Part No. Counting condition count Heating roller senso 40142302 99999999 25DIPSW8-6 =0: Count 1 per ejected paper for single sided, 2 for double sided =1: For A3, 11x17, count 2 per ejected paper for single sided, 4 for double sided Fixing heat rollers 40143016...
  • Page 65 25 ADJUSTMENT Maximum Part name Part No. Counting condition count Tray 2 conv/rev roller 40143026 99999999 1 is counted each time the paper from tray 2 is ejected. Tray 2 feed clutch 40142290 99999999 1 is counted each time the paper from tray 2 is ejected.
  • Page 66 25 ADJUSTMENT Maximum Part name Part No. Counting condition count FNS stapler/front 40141095 99999999 1 is counted each time a copy is ejected in stapling front 1-point stapling, stapling 2-point stapling, or middle binding mode. FNS stapler/rear 40141095 99999999 1 is counted each time a copy is ejected in stapling front 1-point stapling, stapling 2-point stapling, or middle binding mode.
  • Page 67 25 ADJUSTMENT Maximum Part name Part No. Counting condition count Reversal exit count 2 is counted each time 1-sided paper is ejected 99999999 after being reversed.0 is counted each time 1- sided paper is ejected straight.1 is counted each time 2-sided paper is ejected. Paper feed count ADU 2 is counted each time 2-sided paper is ejected.

  • Page 68: Copy Count By Parts To Be Replaced (Optional Parts)

    25 ADJUSTMENT [8] Copy Count by Parts to be Replaced Changing the data on the Copy Count by Parts to be Replaced (Optional Parts) (Optional Parts) This function allows you to change the limit value, This function allows you to make the following settings part number, or part name for the desired optional for an optional part or data: copy count by parts to be replaced (optional parts).

  • Page 69: Setting Passwords

    25 ADJUSTMENT Reference 1: Reference 1: The characters entered in the data field of each The digits entered in the data field of each data data item will be shifted to the left one after an- item will be shifted to the left one after another. other.

  • Page 70: Setting The Telephone Number And/Or Fax Number Of The Service Center

    25 ADJUSTMENT [10] Setting the Telephone Number and/ [11] Setting the Serial Number or Fax Number of the Service Center This function allows you to display, set, or change the serial number of the main unit or option. This function allows you to set the telephone number and/or fax number of the service center displayed when Step Operation...

  • Page 71: List Of Adjustment Items In The 25 Mode

    25 ADJUSTMENT [13] List of Adjustment Items in the 25 Mode Adjustment Item Menu Remarks Software SW setting. See “List of Software DIP Switches.” Paper size setting PM count Resetting PM Count Setting PM Cycle Data collection Total count of each paper size Copy count of each paper size Print count of each paper size RADF count...

  • Page 72: Mode

    36 ADJUSTMENT 36 MODE [1] Setting Method [2] High Voltage Adjustment A special adjustment mode called the 36 Mode is pro- Adjusting the high voltage for charging, transfer, sepa- vided. This mode is used to perform various adjust- ration, and development. ments.
  • Page 73 Preparation: Be sure the drum frame is set. High Voltage Adjustment (Transfer) Default setting value must be set under the Step Operation guidance of Minolta. Enter the 36 mode. Default: 39 [36 Mode Menu Screen] Press Process adjustment.

  • Page 74: Drum Peculiarity Adjustment

    36 ADJUSTMENT Blade setting mode [3] Drum Peculiarity Adjustment In this mode, toner stuck on the drum surface Adjusting the blade set, drum potential, maximum den- during replacement of the cleaning blade or drum sity (Dmax), dot diameter, laser offset and gamma. is removed to prevent damage to the drum and Select Process adjustment in the 36 Mode...
  • Page 75 36 ADJUSTMENT Auto drum potential adjustment Auto maximum density adjustment Automatically adjusting the development bias and drum (Dmax adjustment) applied voltage by measuring the drum potential. Automatically adjusting maximum density (Dmax). This adjustment should be performed when the This adjustment should be performed when the drum or developer is replaced.
  • Page 76 36 ADJUSTMENT Auto dot diameter adjustment LD1 offset adjustment Automatically adjusting the dot diameter. Adjusting the LD1 laser write position. This adjustment should be performed when the This adjustment should be performed when the drum, developer, write unit, or dust-proof glass is drum or developer is replaced.
  • Page 77 36 ADJUSTMENT Step Operation Check the test pattern. If the specification is not satisfied, press Specification: The density of test pat- the C button while pressing the Utility but- tern image resulting from two laser out- ton. put (vertical and horizontal scanning) must [LD1 offset adjustment Screen] be even vertically and horizontally be- Enter an offset value using the numeric...

  • Page 78: Drum Characteristic Adjustment (Manual)

    Maximum density manual adjustment drum, developer, write unit, or dust-proof glass is Maximum density manual adjustment should be replaced. performed under the guidance of Minolta. Preparation: Be sure the drum unit is set and Adjustment range: 0 to 255 auto drum potential adjustment,...

  • Page 79: Recall Standard Data (Process Adjustment)

    36 ADJUSTMENT [6] Recall Standard Data (Process [7] Tray Adjustment Adjustment) This adjustment should be performed when the tray or by-pass unit is replaced. Restoring process adjustment settings to standard values (data after process adjustment). Step Operation Enter the 36 mode. Step Operation [36 Mode Menu Screen]...

  • Page 80: Magnification Adjustment

    36 ADJUSTMENT Printer vertical magnification adjustment [8] Magnification Adjustment Adjusting the printer vertical magnification. Adjusting the printer and copy vertical and horizontal magnifications. Step Operation Select Image adjustment in the 36 Mode Menu Enter the 36 mode. Screen to display the Image adjustment mode [36 Mode Menu Screen] menu Screen.
  • Page 81 36 ADJUSTMENT Printer horizontal magnification adjust- Scanner (platen) vertical adjustment ment Adjusting vertical magnification during platen copy. Adjusting the printer horizontal magnification. Caution: There is no horizontal magnification ad- justment for the scanner. Step Operation Enter the 36 mode. Step Operation [36 Mode Menu Screen] Enter the 36 mode.
  • Page 82 36 ADJUSTMENT Scanner (RADF) vertical magnification [RADF drum clock Adjustment Screen] adjustment Enter a value with the numeric keys and Adjusting vertical magnification during RADF press the key. copy. Setting range: -40 to +40 1 step=0.05% Step Operation Repeat steps 5 to 11 until the specifica- Enter the 36 mode.

  • Page 83: Timing Adjustment

    36 ADJUSTMENT [9] Timing Adjustment Printer restart timing adjustment Adjusting the printer restart timing for post cards Adjusting the leading edge timing (paper feed restart and other papers. timing), registration loop amount, and leading edge erase amount. Step Operation Select Image adjustment in the 36 Mode Enter the 36 mode.
  • Page 84 36 ADJUSTMENT Printer Resist Loop Adjustment Printer Pre-resist Adjustment Adjusting the printer resist loop amount for trays Adjusting the pre-resist for tray 1, tray 2, tray 3, (tray 1, 2, 3), manual feed tray, and ADU. tray 4 (LCT), and ADU. Step Operation Step...
  • Page 85 36 ADJUSTMENT Printer lead edge timing adjustment Scanner restart timing adjustment Adjusting the printer lead edge timing (Image eras- Adjusting the scanner restart timing during platen ure amount). copy. Caution: Printer restart timing adjustment must Step Operation be completed before performing this ad- Enter the 36 mode.
  • Page 86 36 ADJUSTMENT RADF restart timing adjustment RADF resist loop adjustment Adjusting the scanner restart timing during RADF Adjusting the resist loop amount during RADF copy. copy. Caution: Printer restart timing adjustment must Caution: Printer restart timing adjustment must be completed before performing this ad- be completed before performing this justment.

  • Page 87: Radf Adjustment

    36 ADJUSTMENT [10] RADF Adjustment RADF density adjustment Performing RADF density adjustment, RADF original When the original reader slit glass is replaced, the density when reading original with RADF must size adjustment, RADF sensitivity adjustment, and be adjusted. RADF incline offset adjustment. Preparation: Wipe the original reader slit glass Select...
  • Page 88 36 ADJUSTMENT RADF original size adjustment RADF sensitivity adjustment Perform this adjustment when the RADF origi- Perform this adjustment when replacing the nal size detection does not operate properly or RADF control board. when replacing the RADF control board. Caution: RADF original size adjustment consists Step Operation of A4/8.5 x 11 and B6/5.5 x 8.5R.

  • Page 89: Centering Adjustment

    36 ADJUSTMENT RADF skew offset adjustment [11] Centering Adjustment Perform this adjustment when replacing the RADF Perform this adjustment to center the image in the pa- control board. per feed direction. Select Image adjustment in the 36 Mode Menu Step Operation Screen to display the Image Adjustment Menu Enter the 36 mode.
  • Page 90 36 ADJUSTMENT Printer Centering Adjustment Scanner centering adjustment Adjusting the printer centering. Adjusting the scanner (platen) centering. Preparation: Printer centering adjustment must Step Operation be completed before performing Enter the 36 mode. this adjustment. [36 Mode Menu Screen] Press “ Image adjustment.”...

  • Page 91: Distortion Adjustment (Copier)

    36 ADJUSTMENT RADF centering adjustment [12] Distortion adjustment (Copier) Adjusting the RADF copy centering. This is to correct distortion during platen/RADF The adjustment items are as follows: copying. There are four adjustment items for warp • Small size front side(B5R) correction: •...

  • Page 92: Recall Standard Data (Image Adjustment)

    36 ADJUSTMENT [13] Recall Standard Data [14] Running Test Mode (Image Adjustment) Testing continuous copy operation. Select Running Test Mode in the 36 Mode Menu Restoring image adjustment settings to standard val- Screen. ues (data after process adjustment). This adjustment consists of the following items: Intermittent copy mode Step Operation...

  • Page 93: Test Pattern Output

    36 ADJUSTMENT [15] Test pattern output mode Output test pattern. Select [4] Test pattern output mode in the 36 Mode Menu Screen to display the Test Pattern Output Mode Screen. Caution: Do not touch any mode that is not spe- cifically described.
  • Page 94 36 ADJUSTMENT No. 1 Overall halftone [Check item] • When density is set to 70 (halftone) If there are white stripes, black stripes, or uneven density, determine whether the fault is with the scanner or the printer. • When density is set to 0 (white) If the test pattern is blurred, determine whether the fault is with the scanner or the printer.
  • Page 95 36 ADJUSTMENT No. 2 Gray scale pattern [Check Item] If the test pattern is blurred or the density is light, determine whether the fault is with the processing system or with correction. If the copy image is abnormal despite this test pattern being normal, either the image processing system or the scanner system is abnormal.
  • Page 96 36 ADJUSTMENT No. 3 Gray scale pattern [Check item] If the test pattern is abnormal, check whether the two lasers are emitting light normally. [Note] Loss of the image occurs in test pattern when printing on paper other than A3 paper. Test patterns: Sample of A3 paper output 1 - 75...
  • Page 97 36 ADJUSTMENT No. 5 Gray scale pattern [Check Item] If the test pattern is abnormal, check whether the two laser outputs are uniform. [Note] Loss of the image occurs in test pattern when printing on paper other than A3 paper. Test patterns: Sample of A3 paper output LD-2 LD-1...
  • Page 98 36 ADJUSTMENT No. 11 Beam misalignment check [Check Item] If the test pattern is abnormal, check to see if position correction of the two laser beams is normal. Test patterns 1 - 77...
  • Page 99 36 ADJUSTMENT No. 16 Linearity evaluation pattern [Check Item] Use this test pattern to determine whether the fault is with the scanner or the printer. The printer horizontal magnification, vertical magnification, tilt, and leading edge timing can be checked. If the copy image is defective despite no abnormality in the test pattern, the scanner is at fault.

  • Page 100: Test Pattern Density Setting

    36 ADJUSTMENT [17] Finisher adjustment [16] Test Pattern Density Setting Setting the test pattern density. Adjusting the finisher, cover sheet tray, and trimmer. Select Test pattern density setting in the 36 Mode Select Finisher adjustment on the 36 Mode Menu Screen to display the Test Pattern Density Set- Menu Screen to display the Finisher adjustment ting Screen.
  • Page 101 36 ADJUSTMENT Stapling and Folding stopper adjustment Folding stopper adjustment (FN-4 only) (FN-4 only) Adjusting the stapling position when stapling and Adjusting the folding position when stapling and folding mode. folding or folding mode. Step Operation Step Operation Enter the 36 mode. Enter the 36 mode.
  • Page 102 36 ADJUSTMENT Cover sheet tray size adjustment Trimming stopper adjustment (Cover Inserter A only) (TMG-1 only) This adjustment should be performed when the Adjusting the trimming amount. cover sheet tray size cannot be detected prop- erly. Step Operation Enter the 36 mode. Step Operation [36 Mode Menu Screen]...
  • Page 103 36 ADJUSTMENT Punch vertical position adjustment Punch horizontal position adjustment (PK-1 only) (PK-1 only) Adjusting the punching position (vertical). Adjusting the punching position (horizontal). Step Operation Step Operation Enter the 36 mode. Enter the 36 mode. [36 Mode Menu Screen] [36 Mode Menu Screen] Press “...

  • Page 104: List Output Mode

    36 ADJUSTMENT Punch registration loop adjustment [18] List Output Mode (PK-1 only) Outputing various data. Adjusting the registration loop amount. Select “ List output mode” in the 36 Mode Menu Screen to display the List output mode menu Step Operation Screen.

  • Page 105: Mode

    47 ADJUSTMENT 47 MODE [1] 47 Mode/Multi Mode Setting Method Step Operation 47 mode Turn on the main switch while holding This mode provides self-diagnostic functions (in- down 4 and 7 of the copy quantity but- put/output check function) to check and adjust ton.
  • Page 106 47 ADJUSTMENT Multi mode Step Operation This mode is entered from the 47 mode. It ena- Enter the 47 mode. bles multiple I/O checks using a single I/O check [47 Mode (I/O Check Mode) Screen] code. Use the copy quantity button and enter the code.

  • Page 107: Adjustment Data Display

    47 ADJUSTMENT [2] Adjustment Data Display (1) When the total capacity of the hard Displaying a list of machine adjustment values disk is checked (factory-set values and current values). The total capacity of the hard disk is No adjustment (data value change) can be made displayed after “OUT:”...

  • Page 108: Input Checklist

    47 ADJUSTMENT [4] Input checklist Code Symbol M u l t i Display and Classi- Name Signal Source fication mode Remaining toner detection signal Empty Drum (internal) temperature detection signal Fixing upper roller temperature detection signal Heat roller temperature detection signal Humidity sensor signal Dmax MONI signal Dmax signal...
  • Page 109 47 ADJUSTMENT Display and Classi- Code Symbol M u l t i Name Signal Source fication mode PS20 Tray 1 upper limit detection signal PS21 Tray 2 upper limit detection signal PS22 Tray 3 upper limit detection signal PS23 By-pass feed tray upper limit detection signal PS43 By-pass feed tray lower limit detection signal PS109...
  • Page 110 47 ADJUSTMENT Display and Classi- Code Symbol M u l t i Name Signal Source fication mode PS62 APS sensor 1 detection signal PS63 APS sensor 2 detection signal PS64 APS sensor 3 detection signal PS65 APS sensor 4 detection signal PS66 APS sensor 5 detection signal PS67...
  • Page 111 47 ADJUSTMENT Display and Classi- Code Symbol M u l t i Name Signal Source fication mode PS20 16:Stacker no paper detection PS21 17:Stapling and folding stopper release motor HP PS22 18:Folding knife HP PS23 19:Stapling and folding stopper HP PS24 20:Alignment plate/lower HP PS25...
  • Page 112 47 ADJUSTMENT Display and Classi- Code Symbol M u l t i Name Signal Source fication mode PS208 54:Sheet set PS209 55:Pre no paper PS201 56:Sheet passage no paper with paper PS202 57:No sheet PS203 58:Sheet tray lower limit PS204 59:Sheet tray upper limit PS205 60:Sheet size (small)

  • Page 113: Output Checklist

    47 ADJUSTMENT [5] Output checklist Cannot be set Code Symbol M u l t i Classi- Name or changed in fication mode field *1 Exposure lamp Toner supply motor Charging corona unit Transfer corona unit Separation corona unit (AC+DC) Dmax LED g LED Jam detection LED Transfer corona unit installation guide plate...
  • Page 114 47 ADJUSTMENT Classi- Code Symbol M u l t i Name fication mode — — — *1 Scanner drive motor *2 Polygon motor 0: 400 dpi 1:600dpi *3 Shading correction 0: 400 dpi 1:600dpi Main motor Drum drive motor Fan motor 1: Scanner cooling fan 2: Write unit cooling fan (fast) 3: Write unit cooling fan (slow)
  • Page 115 47 ADJUSTMENT Cannot be set Classi- Code Symbol M u l t i Name or changed in fication mode field Drum/developing/blade motor M2/M3/M14 Toner supply motor/1 Message test JAMIB Jam indicator board LED test (turn on all lights) Drive (EDH-2) M302 1: Original feed motor (forward) M302...
  • Page 116 47 ADJUSTMENT Cannot be set Classi- Code Symbol M u l t i Name or changed in fication mode field 21: Alignment plate motor/lower (HP search) 22: Folding stopper motor (HP search) 23: Folding knife motor (HP search) 24: Folding conveyance motor 25: Stapling and folding stopper release motor (HP search) 26: Stapling and folding stopper release motor (set) 27: Stapling and folding stopper release motor (release)
  • Page 117 47 ADJUSTMENT Cannot be set Code Symbol M u l t i Classi- Name or changed in fication mode field 72:Main motor 73:— 74:— 75:— 76:Gate Solenoid 77:Punch clutch 78:Punch motor (Panching operation) 79:Punch shift motor (HP search) 80:— 81:Punch scraps conveyance motor 82:Main motor cooling fan 83:—...
  • Page 118 47 ADJUSTMENT Cannot be set Code Symbol M u l t i Classifi- Name or changed in cati o n mode field 1: Paper gate solenoid 2: ADU lock solenoid 3: Fixing guide solenoid ADU paper feed MS Pre-transfer roller drive motor Second paper feed motor ADU reversal motor 1: Fast forward 2: Slow forward 3: Fast backward...

  • Page 119: Other Adjustments

    OTHER ADJUSTMENT OTHER ADJUSTMENTS [1] Centering Adjustment Adjustment method Caution: Centering adjustment need not be Step Operation performed normally because paper Draw out the tray. inclination is detected in the second Loosen the two screws at the center of paper feed section and original image the tray.
  • Page 120 OTHER ADJUSTMENT LCT tray centering adjustment a. Adjustment method Step Operation Guide plate/rear Guide plate/front Move the paper up/down plate. Open the top cover. Remove the four screws to detach the side cover (right). Screws Screws Screws Screws Side cover Center positioning (right) Screws...
  • Page 121 OTHER ADJUSTMENT Adjustment Method Standard value of mis-centering: ±3 mm Step Operation Open the top cover. Press the SW100( LT tray down switch) to lower the up/down plate to the bottom. Loosen the two screws at the top of the ±3 mm Image center rear guide and one screw at the bottom.

  • Page 122: Adjusting The Lct Paper Feed Roller Pressure (C-305L Only)

    OTHER ADJUSTMENT [2] Adjusting the LCT Paper Feed Roller [3] Paper up/down plate horizontal Pressure (C-305L only) adjustment Caution: This adjustment is required when no Caution: Paper up/down plate horizontal adjust- feed of paper occurs. ment must be carried out when a paper feed jam occurs frequently or after re- Tool placement of the up/down wires of a...
  • Page 123 OTHER ADJUSTMENT LCT Up/Down Plate Horizontality Adjust- Adjustment Method ment Step Operation To remove the tray with the up/down plate up, set the tray with a small thing (eraser, Screws etc.) inserted under the up/down drive linkage lever. Up/down pulley Up/down plate Adjusting screws...
  • Page 124 OTHER ADJUSTMENT Blank page 1 - 103...
  • Page 125 OTHER ADJUSTMENT Adjustment Method Remove the two screws to detach the Step Operation clutch replacement cover. Raise the up/down plate. Open the top cover. Clutch replacement cover Remove the four screws to detach the side cover (right). Screws Screws Remove the five screws to detach the rear cover.

  • Page 126: Skew Adjustment

    OTHER ADJUSTMENT [4] Skew Adjustment 3. LCT Skew Adjustment Caution: Tilt adjustment must be performed Adjustment Method (when All Printed Sheets when the paper supplied from the cur- are Skewed) rent tray is different from the paper supplied from other trays in the way Step Operation they are skewed.
  • Page 127 OTHER ADJUSTMENT ADU (Rear side) Skew Adjustment Adjustment Method (when Some of Printed Sheets are Skewed Irregularly) Adjustment Method Step Operation Print a test pattern (No.16) in the con- Step Operation tinuous copy mode to check for skew. Draw out the ADU stand and detach the Remove the side cover (right).
  • Page 128 OTHER ADJUSTMENT Blank page 1 - 107...

  • Page 129: Tray Spring Pressure Adjustment

    OTHER ADJUSTMENT [5] Tray Spring Pressure Adjustment Bypass paper feed spring pressure ad- justment Caution: Tray spring pressure adjustment must be performed when no feed or double feed of paper occurs. Tray spring pressure may be affected by a type of paper used or operating environment (under the low temperature condition, no feed of paper tends to occur).

  • Page 130: Paper Feed Height (Upper Limit) Adjustment

    OTHER ADJUSTMENT [6] Paper Feed Height (Upper Limit) LCT spring pressure adjustment Adjustment Caution 1: Paper feed height (upper limit) adjustment must be performed when Spring no paper feed occurs, when the leading edge of the fed paper is folded or when a convexly curled paper is fed.
  • Page 131 OTHER ADJUSTMENT Adjustment method Remove the two screws securing the sensor mounting bracket and install them Step Operation in the outside mounting holes (oblong To draw out the tray with the paper up/ holes) temporarily. down plate held up, set the tray with a <When the heights are not within rubber eraser or the like inserted under specifications>...
  • Page 132 OTHER ADJUSTMENT Adjustment method Remove the two screws securing the sensor mounting bracket and install then Step Operation in the outside mounting holes (oblong Move the paper up/down plate up. holes) temporarily. Open the top cover. <When the heights are not within Measure the distance between the top specifications>...

  • Page 133: Pick-Up Release Amount Adjustment

    OTHER ADJUSTMENT [7] Pick-up Release Amount a. Adjustment method Adjustment Step Operation Caution: Pick-up release amount adjustment To draw the tray with the paper up/down must be performed when a no-feed jam plate held up, set the tray with a eraser occurs frequently.
  • Page 134 OTHER ADJUSTMENT Adjustment method Adjustment of pick-up release amount of Step Operation Move the paper up/down plate up. Paper feed roller Open the top cover. Remove the spring from the paper pick-up roller unit. Top cover Paper up/down Spring plate Pick-up solenoid Remove Paper feed roller...

  • Page 135: Radf Mounting Position Adjustment

    OTHER ADJUSTMENT If both stopper pieces do not touch the [8] RADF Mounting Position slit glass, make adjustments using ad- Adjustment justing screws A and B alternately. Tool Perform steps 2 and 3 repeatedly until • Screwdriver (Phillips) the two stopper pieces touch the slit glass at the same time.

  • Page 136: Radf Skew Adjustment

    OTHER ADJUSTMENT [9] RADF Skew Adjustment Close the RADF, turn the skew Tools adjustment screws and adjust the skew. For skew pattern A: • Screwdriver (Phillips) Turn the skew adjustment screw Adjustment method counterclockwise. For skew pattern B: Turn the skew adjustment screw clockwise.

  • Page 137: Radf Paper Skew Adjustment

    OTHER ADJUSTMENT [10] RADF Paper Skew Adjustment Step Operation Face (side 1) of original paper skew Move the registration pulley bracket one calibration in the direction below Note: Always perform this adjustment after according to the paper skew pattern. completing the RADF skew adjust- ment.
  • Page 138 OTHER ADJUSTMENT Back side (side 2) of original paper skew Step Operation adjustment Move the R range adjustment plate one calibration in the direction below according to the paper skew pattern. Open/close cover For skew in pattern A: Move the R range adjustment plate to left side.

  • Page 139: Radf Hinge Spring Pressure Adjustment

    OTHER ADJUSTMENT [11] RADF Hinge Spring Pressure Adjustment Tools • Screwdriver (slotted) • Wrench or flat-nose pliers Adjustment method Adjusting screw Step Operation Close the RADF. Loosen the nut on the left side and the nut on the right side. Open the RADF .

  • Page 140: Fns Adjusting The Magnets On Conveyance Guide Plate B

    OTHER ADJUSTMENT [12] FNS Adjusting the Magnets on (4) Remove the E-ring and the gear. Conveyance Guide Plate B (5) Adhere the magnets to conveyance guide plate A 1. Tool used and retighten the set screws. • Phillips-head screwdriver Magnet 2.

  • Page 141: Fns Adjusting The Magnets On Conveyance Guide Plate C

    OTHER ADJUSTMENT [13] FNS Adjusting the Magnets on (4) Adhere the magnets to conveyance guide plate A Conveyance Guide Plate C and retighten the screws. 1. Tool used Magnet • Screwdriver (Phillips) (rear) Magnet (front) 2. Preparation (1) Open the front cover. (2) Check whether conveyance guide plate C makes contact with the cushioning rubber when the magnets are stuck to conveyance guide plate D.

  • Page 142: Fns Adjusting The Sub-Tray Paper Exit Gate

    OTHER ADJUSTMENT [14] FNS Adjusting the Sub-tray Paper (4) With SD2 ON, measure the gap between the Exit Gate solenoid plunger and the bracket stopper (indi- 1. Tools used cated by B in the illustration). • Phillips-head screwdriver Spec value for gap: B = 5 ±0.5mm. •...

  • Page 143: Fns Adjusting The Paper-Path Switching Gate

    OTHER ADJUSTMENT [15] FNS Adjusting the Paper-Path (4) With SD1 (gate) ON, measure the distance be- Switching Gate tween the long gate and the guide plate, indicated 1. Tools used by A in the illustration. • Screwdriver (Phillips) Spec value for distance: A = 7.6±0.5mm. •...

  • Page 144: Fns Adjusting The By-Pass Gate

    OTHER ADJUSTMENT [16] FNS Adjusting the By-pass Gate (4) Remove the wirings from the clamps, and move 1. Tools used the FNS CB together with its bracket. • Phillips-head screwdriver • Scale Clamps 2. Preparation (1) Remove the rear cover. Clamps (2) Open the front cover and the guide plate.
  • Page 145 OTHER ADJUSTMENT 3. Adjustment Procedure (1) Loosen the 2 set screws holding the solenoid in place, and move the solenoid as necessary to adjust. Solenoid Screws (2) Retighten the screws. (3) Reassemble in the opposite sequence to re- moval. 1 - 124...

  • Page 146: Fns Adjusting The Shift Position

    OTHER ADJUSTMENT [17] FNS Adjusting the Shift Position 3. Adjustment Procedure 1. Tool used (1) Loosen the screw holding the PS18 (roller shift • Screwdriver (Phillips) HP) bracket in place, and adjust the bracket position as necessary. 2. Preparation (1) Remove the following parts. Screw •...

  • Page 147: Fns Adjusting Opening/Closing At The Paper Exit

    OTHER ADJUSTMENT [18] FNS Adjusting Opening/Closing at 3. Adjustment Procedure the Paper Exit (1) Loosen the set screw holding the PS12 (paper 1. Tool used exit-opening detector) bracket in place, and ad- • Screwdriver (Philips) just the bracket position as necessary. 2.

  • Page 148: Fns Adjusting The Paper Exit-Opening Solenoid

    OTHER ADJUSTMENT [19] FNS Adjusting the Paper Exit- 3. Adjustment Procedure Opening Solenoid (1) Remove the 2 set screws holding the solenoid 1. Tools used bracket in place, and remove the solenoid to- • Phillips-head screwdriver gether with the bracket. •...

  • Page 149: Fns Adjusting The Paper Exit-Opening Lower Guide Plate

    OTHER ADJUSTMENT [20] FNS Adjusting the Paper Exit- (3) Hold down the paper exit-opening lower guide plate Opening Lower Guide Plate with your hand so that the paper exit roller makes 1. Tools used contact, and check that the remaining stroke for •...

  • Page 150: Fns Adjusting The Mount Location Of The Paper Exit Arm

    OTHER ADJUSTMENT [21] FNS Adjusting the Mount Location [22] FNS Adjusting the Mount Location of the Paper Exit Arm of the Upper Alignment Plates 1. Tools used 1. Tools used • Screwdriver (Phillips) • Screwdriver (Phillips) • Scale 2. Adjustment Procedure 2.

  • Page 151: Fns Adjusting The Tension Of The Upper-Alignment-Plate Drive Timing Belt

    OTHER ADJUSTMENT [23] FNS Adjusting the Tension of the (2) Loosen the 2 set screws fixing the upper align- Upper-Alignment-Plate Drive Timing ment plates in place (one screw on each plate), Belt and adjust the plates so that distances A and B 1.

  • Page 152: Fns Adjusting The Mount Location Of The Lower Alignment Plates (Fn-4 Only)

    OTHER ADJUSTMENT [24] FNS Adjusting the Mount Location (2) Loosen the 2 set screws fixing the lower align- of the Lower Alignment Plates (FN-4 ment plates in place (one screw on each plate), only) and adjust the plates so that distances A and B 1.

  • Page 153: Fns Adjusting The Tension Of The Lower-Alignment-Plate Drive Timing Belt (Fn-4 Only)

    OTHER ADJUSTMENT [25] FNS Adjusting the Tension of the [26] FNS Adjusting the Stapling Position Lower-Alignment-Plate Drive Timing (Flat Stapling) Belt (FN-4 only) 1. Tools used 1. Tool used • Screwdriver (Phillips) • Scale • Screwdriver (Phillips) 2. Preparation 2. Preparation (1) Check whether the virtual line running between (1) If the lower-alignment-plate drive belt tensioner the stoppers is parallel to the virtual line between...

  • Page 154: Fns Adjusting The Stapler Vertical Positioning

    OTHER ADJUSTMENT 3. Adjustment Procedure [27] FNS Adjusting the Stapler Vertical Positioning (1) Loosen the 3 set screws holding the flat-stapling 1. Tools used stopper bracket in place, and position the bracket • Phillips-head screwdriver so that distance A is within the specification •...
  • Page 155 OTHER ADJUSTMENT (4) Remove the cartridge, and install the plate that you took from the jig. Clincher Clincher unit Cartridge Plate Guide pin hole Caution: The positioning portion of the jig need not be engaged with the (5) Install the cartridge. clincher completely.

  • Page 156: Fns Adjusting The Angle Of The Folding Stopper (Fn-4 Only)

    OTHER ADJUSTMENT [28] FNS Adjusting the Angle of the Groove Folding Stopper (FN-4 only) Plate 1. Tool used • Screwdriver (Phillips) 2. Preparation (1) If the staple orientation is not parallel with the paper edge, adjust as described below. Adjustment Procedure (1) Open the front cover and pull the stacker/stapler Stapler unit part of the way out.
  • Page 157 OTHER ADJUSTMENT (3) Remove the 4 set screws holding the cover in place, and remove the cover. Screws Cover Screws (4) Loosen 4 more set screws. (5) Rotate the stapling-and-folding stopper assem- bly as necessary to adjust the alignment. Scale Screws (6) Retighten the screws.

  • Page 158: Fns Adjusting The Angle Of The Folding Stopper (Fn-4 Only)

    OTHER ADJUSTMENT [29] FNS Adjusting the Angle of the Adjustment Procedure Folding (1) Take a fold sample using A3 or 11x17 paper. Stopper (FN-4 only) (2) Check the discrepancy along the folded set’s 1. Tools used trailing edge, and use this information to judge •...

  • Page 159: Fns Adjusting The Tension Of The Stapler-Movement Timing Belt

    OTHER ADJUSTMENT [30] FNS Adjusting the Tension of the [31] FNS Adjusting the Tension of the Stapler- Movement Timing Belt Stapler- Rotation Timing Belt 1. Tools used 1. Tools used • Screwdriver (Phillips) • Screwdriver (Phillips) • Tension gauge or spring balance •...

  • Page 160: Fns Adjusting The Folding Force (Fn-4 Only)

    OTHER ADJUSTMENT [32] FNS Adjusting the Folding Force [33] FNS Adjusting the Mount Location (FN-4 only) of the Folding Knife Motor (FN-4 only) 1. Preparation 1. Tools used (1) If necessary, you can change the force of the • Screwdriver (Phillips) folding and pressure rollers as described below.

  • Page 161: Tu Trimming Parallelism Adjustment

    OTHER ADJUSTMENT [34] TU Trimming Parallelism Adjustment 1. Tools • Screwdriver (Phillips) Adjustment Method Press release lever Front door Conveyance guide plate assembly Mark Screws Step Operation Measure the lengths of the upper edge (A) and lower edge (B) of the trimmed booklet to obtain the parallelism.
  • Page 162 OTHER ADJUSTMENT Blank page 1 - 141...
  • Page 164 Blank page...

  • Page 165: What Is Isw

    This tool can be plugged into the ISW connector of the digital copier to directly update the control programs in flash ROM assembled in the unit. This chapter focuses on instructions on setting up the Di750 to run ISW. For how to run ISW Trns refer to Minolta ISW (In-System Writer) Service Manual.

  • Page 166: Setup

    SETUP [1] ISW-compatible boards 25 mode The 25 mode works only where the copier has The Di750 allows ROM data residing on the fol- both the graphics control and operation control lowing boards to be updated via ISW Tool: programs installed. - Graphics control board (Some parts of HELP+CHECK mode are used - Printer control board...
  • Page 167 Instances of ISW transfer - Writing ROM data newly (as after replacing boards) Normal startup display Writing method Condition Graphics control Flashing timer LED Writing is enabled with The copier does not have the No display on the operation LCD power turned ON.

  • Page 168: Help + Check Mode Operation Flow

    [4] HELP + CHECK mode operation flow Power ON (HELP + CHECK) From the 25 mode menu Some parts of this mode is used to update the operation control program from 25 mode. Choose “PC.” 1. PC Chose one from followings. 1.
  • Page 169 Start ISW Main Body Exit ISW Exit window Normal end *** NORMAL END *** 0. CONTINUE 9. EXIT Abnormal end *** ABNORMAL END *** DATA ERROR 0. CONTINUE 9. EXIT 2 - 5...

  • Page 170: Operating Procedure

    [5] Operating procedure (2) ISW device select menu HELP + CHECK + power supply mode Function: This window lets you select the con- (prerequisite) trol board on which to update ROM Turn the main SW ON while pressing “HELP” and data.
  • Page 171 (3) Item select menu (4) Start confirmation window Function: This window lets you select write Function: This window prompts you to confirm items. whether to start running ISW or not. OPERATION CONTROL - ITEM SELECT MENU [MODE:PC] OPERATION CONTROL - 01 [MODE:PC] ISW START OK? PLEASE PUSH TEN-KEY...
  • Page 172 (5) Executing window (6) Ending result window Function: This window displays the status of Function: This window displays the status of ISW execution in progress. ending. Normal end EXECUTING *** NORMAL END *** Operating instructions PLEASE PUSH TEN-KEY 0. PREVIOUS 9.
  • Page 173 Error Code Description Action No. There is an error in the command to ISW processing unit. A program error is detected. Input data format error. (during ISW to operation control board) Invalid machine name input data. (during ISW to operation control board) Invalid board name input data.

  • Page 174: Preparing The Copier To Transfer

    (7) There is an error in the flash ROM on the operation unit board. Restart from ISW. If the error persists, the life of the operation unit board flash ROM may have expired. Replace the operation unit board. * The system may fail to restart. In that case, restart while pressing the HELP key and CHECK key and repeat ISW.

  • Page 175: Relationships Between Processing States And Operational Leds

    [7] Relationships between processing states and operational LEDs Note : This is only when installing the program to graphics control for the first time. Timer Power save ON/OFF Timer Power Save Initializing CPU now Checking memory Memory check error (waiting for data from PC) Flashing ISW processing (receiving data) Flashing...

  • Page 176: Making The Isw Connector And The Power Connector Available

    [9] Making the ISW connector and the [10] Kinds and quantities of update power connector available ROMs The ISW connector and the power connector are The update EPROMs supported by this unit are listed hidden under the drum frame cover. Detach this cover below.

  • Page 177: Service

    SERVICE...
  • Page 178 Blank page...
  • Page 179 Main Precautions for Maintenance 1. Points to be confirmed before maintenance 4. When replacing the drum and developer, must Before starting maintenance, ask a user and perform neccessary adjustment by refering to collect information about troubles occurred on the Di750 List of Adjustment Items. the machine before the maintenance and the conditions of the machine to grasp key points 5.
  • Page 180 Blank page...

  • Page 181: Service Schedule

    SERVICE SERVICE SCHEDULE [1] Service Schedule Guarantee period (5 years or 30,000,000 copies) Number of Service x 10,000 copies Service item copies count 75 100 125 150 175 200 225 250 275 300 2800 2825 2850 2875 2900 2925 2950 2975 ....
  • Page 182 SERVICE Guarantee period (5 years or 30,000,000 copies) Number of Service x 10,000 copies Service item copies count 75 100 125 150 175 200 225 250 275 300 2800 2825 2850 2875 2900 2925 2950 2975 .... Maintenance Every 250,000 copies 119 times ....

  • Page 183: Maintenance Items

    SERVICE Maintenance Items Main body (Every 250,000 copies) Implementation classification Number of parts Lubric- Replace- Clea- Inspe- Classification Service item Supply replaced ning ction ation ment Preparation (1) Image check Fixing unit (1) Fixing separation claws (upper and lower) cleaning Drum carriage (1) Charging corona unit, cleaner, and developing unit, sensor support...
  • Page 184 SERVICE Implementation classification Number of parts Lubric- Replace- Clea- Inspe- Classification Service item Supply replaced ation ment ning ction (1) Horizontal conveyance roller/ others cleaning (2) Paper reverse/exit entrance guide plate cleaning (3) Paper reverse/exit detection sensor cleaning (4) ADU deceleration detection sensor cleaning (5) ADU paper pre-registration detection sensor cleaning...
  • Page 185 SERVICE RADF [EDH-2] (Every 250,000 copies) Implementation classification Number of parts Lubric- Replace- Clea- Inspe- Classification Service item Supply replaced ning ction ation ment Preparation (1) Paper feeding check (2) Exterior Paper feed section (1) Size detection sensor 1 (2) Size detection sensor 2 (3) Size detection sensor 3 (4) Registration sensor (5) Registration mirror...
  • Page 186 SERVICE FNS [FN-104] (Every 250,000 copies) Implementation classification Number of parts Lubri- Replace- Clea- Inspe- Classification Service item Supply replaced ning ction cation ment Preparation (1) Paper feeding check Conveyance section (1) Conveyance roller (2) Intermediate conveyance roller (sponge roller) 4014-1055-01 Paper exit section (1) Paper exit roller A (sponge roller)
  • Page 187 SERVICE LCT [C-305/305L] (Every 250,000 copies) Implementation classification Number Materials/tools of parts Clea- Inspe- Lubri- Replace- Classification Service item Supply used replaced cation ment ning ction Preparation (1) Paper feeding check Cleaning pad/ Inside of (1) Paper dust removing brush machine cleaning blower brush...
  • Page 188 SERVICE TU [TMG-1] (Every 250,000 copies) Implementation classification Number of parts Lubri- Replace- Clea- Inspe- Classification Service item Supply replaced cation ment ning ction Conveyance section (1) Conveyance rollers (2) Conveyance belts Trimmer section (1) Upper knife (2) Lower knife (3) Paper scraps box and its area Stacker section...

  • Page 189: Main Unit Periodic Inspection Items

    SERVICE [3] Main Unit Periodic Inspection Items Periodic check (I) (Every 500,000 copies) Implementation classification Number of parts Clea- Inspe- Lubri- Replace- Classification Service item Remarks Supply replaced cation ment ning ction Fixing unit (1) Fixing cleaning web (counter resetting) 4014-3030-01 Drum carriage (1) Separation claw replacement...
  • Page 190 SERVICE Periodic check (II) (Every 1,000,000 copies) Implementation classification Number of parts Lubri- Replace- Clea- Inspe- Classification Service item Remarks Supply replaced ning ction cation ment Actual Tray (1) Paper feed roller (500-sheet tray) replacement 4014-3027-01 count: 300K (2) Feed roller (500-sheet tray) feeds 4014-3026-01 (3) Double feed prevention roller...
  • Page 191 SERVICE Periodic check (III) (Every 3,000,000 copies) Implementation classification Number of parts Remarks Clea- Inspe- Lubri- Replace- Classification Service item Supply replaced cation ning ction ment Drum (1) Drum temperature sensor 4014-3259-01 Transfer/separation (1) Transfer/separation corona unit corona unit 4014-3202-01 Registration (1) Registration roller 4014-2038-01...
  • Page 192 SERVICE Periodic check (V) (Every 6,000,000 copies) Implementation classification Number of parts Remarks Lubri- Replace- Clea- Inspe- Classification Service item Supply replaced cation ment ning ction Charging (1) Charging corona unit corona unit 4014-1896-01 (2) PCL 4014-1899-01 Developing unit (1) Developing unit 4014-3025-01 Transfer/separation (1) TSL...

  • Page 193: Radf [Edh-2]

    SERVICE Periodic check (VI) (Every 10,000,000 copies) Implementation classification Number of parts Lubri- Replace- Clea- Inspe- Classification Service item Remarks Supply replaced cation ment ning ction Vertical (1) Vertical conveyance roller (middle, conveyance section lower) 4014-2024-01 (1) Sensor actuator 4014-3004-01 (2) Guide part/Front 4014-2056-01 (3) Guide part/Rear...

  • Page 194: Fns [Fn-104]

    SERVICE [5] FNS [FN-104] Periodic check (I) (Every 1,000,000 copies) Implementation classification Number of parts Lubri- Replace- Remarks Clea- Inspe- Classification Service item Supply replaced ning ction cation ment Stapler unit (1) Stapler unit 4014-1095-01 Actual replacement count: Each 200K staples Periodic check (II) (Every 6,000,000 copies) Implementation classification Number...

  • Page 195: Lct [C-305/C-305L]

    SERVICE [7] LCT [C-305/305L] Periodic check (I) (Every 500,000 copies) Implementation classification Number of parts Lubri- Replace- Remarks Clea- Inspe- NO Classification Service item Supply replaced ning ction cation ment Actual Inside of (1) Paper feed roller 4014-3029-01 replacement machine (2) Feed roller 4014-3028-01 count: 500K...

  • Page 196: Tu [Tmg-1]

    SERVICE [9] TU [TMG-1] Periodic check (I) (Every 10,000,000 copies) Implementation classification Number of parts Lubri- Clea- Inspe- Replace- Remarks Classification Service item Supply replaced cation ning ction ment Actual replacement 4014-3051-01 Trimmer (1) Upper knife (2) Lower knife 4014-3052-01 count: 500 K times section [9-1] PU [PK-1]...

  • Page 197: Replacement Parts List

    SERVICE [10] Replacement parts list Main body No. Classification Parts name Parts No. Q’ty Total count Actual count Parts count No. Maintenance Charging wire 4014-3010-01 250,000 (Every 250,000 copies) Charging wire unit vibration proof rubber 4014-3003-01 250,000 Periodic check (I) Fixing cleaning web 4014-3030-01 500,000...
  • Page 198 SERVICE No. Classification Parts name Parts No. Q’ty Total count Actual count Parts count No. Periodic check (III) Drum temperature sensor 4014-3259-01 3,000,000 (Every 3,000,000 copies) Transfer/separation corona unit 4014-3202-01 3,000,000 Registration roller 4014-2038-01 3,000,000 Registration bearing 4014-2172-01 3,000,000 Registration loop roller 4014-3167-01 3,000,000 Registration clutch...
  • Page 199 SERVICE EDH-2 No. Classification Parts name Parts No. Q’ty Total count Actual count Parts count No. Periodic check (I) Paper feed roller 4014-1446-01 200,000 (Every 1,000,000 copies) Separation roller 4014-1447-01 200,000 Double feed prevention roller 4014-1448-01 200,000 Separation assist roller 4014-1443-01 200,000 Periodic check (II)

  • Page 200: Copy Materials

    SERVICE COPY MATERIALS [1] Consumables (Single unit supply) Name Durability/copies Toner cartridge 50,000 Developer 500,000 Drum 500,000 3 - 20...

  • Page 201: Ce Tool List

    SERVICE CE TOOL LIST Material No. Material Name Appearance Quantity Remarks 4014-5001-01 Temp. sensor PS jig/A (for upper fixing roller) 4014-5002-01 Temp. sensor PS jig/B (for heating roller) 4014-5003-01 Thermostat PS jig/A (for upper fixing roller) 4014-5004-01 Thermostat PS jig/B (for heating roller) 4014-5005-01...
  • Page 202 SERVICE Material No. Material Name Appearance Quantity Remarks 4014-5008-01 PS jig For EDH-2 2pc/set 4014-5010-01 ADJ chart For EDH-2 4014-5011-01 White chart For EDH-2 4014-5009-01 Stapler PS jig For FN-104/ FN-4 Note: The Part Number supported may change in the future. 3 - 22...

  • Page 203: Electric Partslist

    ELECTRIC PARTS LIST...
  • Page 204 Blank page...

  • Page 205: Di750 Electrical Parts Layout Drawing

    PARTS LAYOUT DRAWING Di750 ELECTRICAL PARTS LAYOUT DRAWING [1] Read Section/Operational Section Image OP IFB control Optional I/F board ADF brake PS Scanner cooling fan board Interlock 1 Scanner HP PS PS24 converter Front door open/close OB INVB board Scanner drive motor detection PS1 OB Inverter board...

  • Page 206: Drum Unit

    PARTS LAYOUT DRAWING [3] Drum Unit DPSB Drum potential sensor board Drum potential sensor HTR1 Drum heater DTSB Drum temperature sensor board Drum temperature sensor Separation claw SD TCSB Toner control sensor board [4] Cleaning Unit PS30 Blade PS1 Blade motor PS31 Blade PS2 4 - 2...

  • Page 207: Tray 1,2,3

    PARTS LAYOUT DRAWING [5] Tray 1,2,3 MC3/5/7 PS48/50/52 MC4/6/8 Feed clutch 1/2/3 Paper pre-registration PS 1/2/3 Pre-registration clutch 1/2/3 PS26/27/28 No paper PS 1/2/3 HTR2/3/4 PS20/21/22 Tray heater 1/2/3 Tray upper limit PS 1/2/3 PS47/49/51 Paper feed PS 1/2/3 PS33/36/39 Paper size detection SD8/9/10 PS2-1/2/3...

  • Page 208: By-Pass Feed Section

    PARTS LAYOUT DRAWING [7] By-pass Feed Section Write section SD11 Pick up SD (by-pass) cooling fan 2 Write section PS23 cooling fan 1 Tray upper limit PS (by-pass) Up/down motor (by-pass) PS43 Tray lower limit PS (by-pass) PS29 No paper PS (by-pass) PS56 Paper size PS2 (by-pass) PS55...

  • Page 209: Adu Unit

    PARTS LAYOUT DRAWING [9] ADU Unit High voltage unit 2 PS59 Transfer ADU deceleration PS synchronization lamp PS12 PS60 Transfer/separation wire ADU Pre-registration PS cleaning pad limit PS PS46 PS13 ADU exit PS ADU No paper detection PS PS11 PS58 Transfer/Separation wire cleaning ADU paper reverse PS pad HP PS...

  • Page 210: Fixing Unit

    PARTS LAYOUT DRAWING [10] Fixing Unit Fixing temperature sensor 2 Fixing temperature sensor 1 Thermostat (upper) Fixing temperature sensor 4 Web drive motor Fixing heater lamp 1 Fixing heater lamp 2 Fixing jam PS Fixing heater lamp 3 Fixing temperature sensor 3 Thermostat 2 (lower) Fixing exit PS...

  • Page 211: Toner Supply Unit

    PARTS LAYOUT DRAWING [12] Toner Supply Unit Toner supply motor 1 Toner supply motor 2 Toner level detection sensor [13] Write Section INDXSB Index sensor board Polygon motor PMDB Polygon motor drive board Laser correction motor LDB2 Laser driver board 2 LDB1 Laser driver board 1 4 - 7...

  • Page 212: Control/Drive Unit In Rear Section

    PARTS LAYOUT DRAWING [14] Control/Drive Unit in Rear Section Main motor SCDB Scanner drive board Developing section fan Scanner drive motor Drum motor Developing motor LAN IFB LAN I/F board Main unit cooling fan 2 High voltage unit 1 Main unit cooling fan 1 Paper exit motor CBR2...
  • Page 213 PARTS LAYOUT DRAWING Blank page 4 - 9...

  • Page 214: Di750 Connector Layout Drawing

    CONNECTOR LAYOUT DRAWING Di750 CONNECTOR LAYOUT DRAWING [1] Read Section 651 (W: 3pin) 640 (BK:4pin) 650 (W: 3pin) 652 (W: 3pin) 653 (W: 3pin) 660 (W: 3pin) 661 (W: 3pin) 662 (W: 3pin) 663 (W: 3pin) 665 (W: 3pin) 666 (W: 3pin) 664 (W: 3pin) 631 (BK:4pin) FRONT...

  • Page 215: Drum Unit

    CONNECTOR LAYOUT DRAWING [3] Drum Unit 353 (W: 7pin) 350 (W: 4pin) 340 (B: 12pin) 351 (W: 4pin) 342 (W: 2pin) 341 (BK: 26pin) 341 (BK: 10pin) [4] Cleaning Unit 360 (W: 3pin) 361 (W: 3pin) 355 (BK: 9pin) 4 - 11...

  • Page 216: Tray 1,2,3

    CONNECTOR LAYOUT DRAWING [5] Tray 1,2,3 261, 278 (W: 2pin) 262, 279 (W: 6pin) 260, 277 (W: 2pin) 275 (W: 3pin) 276 (W: 3pin) 250, 252 (BK: 24pin) 274 (W: 3pin) 269, 307 (W: 2pin) 273 (W: 3pin) 263, 280 (W:6pin) 271, 288 (W: 3pin) 264 (W: 2pin) 277, 289...

  • Page 217: By-Pass Feed Section

    CONNECTOR LAYOUT DRAWING [7] By-pass Feed Section 471 (BK:9pin) 77 (BK:4pin) 247 (W:2pin) 470 (W:13pin) 254 (W:12pin) 248 (W:2pin) 76 (BK:4pin) 254 (W:7pin) 244 (W:3pin) 243 (W:3pin) 242 (W:3pin) 246 (W:3pin) 241 (W:3pin) 473 (W:13pin) [8] Second Paper Feed Section 599 (W: 3pin) 569 (W: 7pin) 598 (W: 3pin)

  • Page 218: Adu Unit

    CONNECTOR LAYOUT DRAWING [9] ADU Unit 557 (W: 6pin) 565 (W: 3pin) 569 (W: 7pin) 568 (W: 8pin) 678 (W: 6pin) 583 (W: 3pin) 593 (W: 2pin) 588 (W: 3pin) 586 (W: 3pin) 584 (W: 3pin) 585 (W: 3pin) 581 (W: 3pin) 557 (W: 6pin) 580 (W: 3pin) 592 (W: 3pin)

  • Page 219: Fixing Unit

    CONNECTOR LAYOUT DRAWING [10] Fixing Unit 488 (W: 4pin) 487 (W: 3pin) 489 (W: 5pin) 486 (W: 2pin) 462 (W: 2pin) 451 (BK: 20pin) 450 (B: 8pin) 465 (W: 3pin) 464 (W: 3pin) FRONT [11] Paper Exit Section 177 (W: 3pin) 480 (W: 3pin) FRONT 4 - 15...

  • Page 220: Toner Supply Unit

    CONNECTOR LAYOUT DRAWING [12] Toner Supply Unit 482 (W: 6pin) 484 (W: 3pin) 184 (W: 4pin) 483 (W: 3pin) 473 (W: 13pin) [13] Write Section 193 (W: 6pin) 192 (W: 13pin) 190 (W: 12pin) 191 (W: 14pin) 583 (W: 5pin) 4 - 16...

  • Page 221: Printer Control Board

    CONNECTOR LAYOUT DRAWING [14] Printer Control Board 224 (W: 7pin) 225 (GY: 20pin) 229 (W: 5pin) 230 (W: 3pin) 223 (GY: 20pin) 292 (N.C.) 216 (W: 15pin) 37 (N.C.) 291 (N.C.) 222 (W: 15pin) 215 (GY: 18pin) 228 (W: 8pin) 210 (GY: 30pin) 227 (W: 9pin) 213 (GY: 60pin)

  • Page 222: Icb I/F Board

    CONNECTOR LAYOUT DRAWING [17] ICB I/F Board 127 (BK: 120pin) 100 (W: 10pin) 101 (W: 3pin) 134 (BK: 20pin) 145 (N.C.) 133 (W: 8pin) 135 (GY: 22pin) 137 (GY: 20pin) 132 (W: 13pin) 138 (W: 13pin) 131 (W: 14pin) 140 (W: 9pin) 139 (W: 8pin) 130 (W: 12pin) [18] ADU Stand Drive Board...

  • Page 223: Dc Drive Board

    300 (W: 6pin) 321 (W: 7pin) 320 (W: 14pin) 1 (W: 2pin) Caution: Must use fuses specified by Minolta when replacing F1 and F2. If fuses are not specified by Minolta, the safety feature may not work, resulting in burn damage to the [22] DC Power Supply Unit 2 board or personal injury.

  • Page 224: Scanner Drive Board

    CONNECTOR LAYOUT DRAWING [23] Scanner Drive Board [26] Jam Indicator Board 620 (W: 3pin) 623 (W: 7pin) 622 (W: 4pin) 621 (W: 4pin) 531 (W:7pin) 610 (W: 15pin) 600 (W: 6pin) [24] High Voltage Unit 1 [27] L1 Inverter 632 (W: 3pin) 2 (W: 2pin) 251 (W:9pin) 250 (W:3pin)

  • Page 225: Drum Temperature Sensor Board

    CONNECTOR LAYOUT DRAWING [29] Drum Temperature Sensor Board [32] Optional I/F Board 123 (W: 120pin) 122 (BK: 60pin) 455 (W: 4pin) 456 (BK: 2pin) 124 (W: 120pin) [30] Operation Board 1 [33] OB Inverter 165 (W: 3pin) 161 (BK: 14pin) 162 (W: 4pin) 150 (W: 10pin) 160 (BK: 24pin)

  • Page 226: Index Sensor Board

    CONNECTOR LAYOUT DRAWING [35] Index Sensor Board [38] Polygon Motor Drive Board 130 (W: 5pin) 442 (W: 11pin) 422 (W: 12pin) [39] Memory Board [36] A/D Converter Board 141 (W: 20pin) 410 (W: 5pin) 411 (W: 34pin) 142 (W: 20pin) [40] LAN I/F Board [37] Laser Driver Board 1/2 (W: 8pin)
  • Page 227 CONNECTOR LAYOUT DRAWING Blank page 4 - 23...

  • Page 228: Di750 Overall Wiring Diagram (1/5)

    Di750 OVERALL WIRING DIAGRAM (1/5) MAIN SWITCH CBR1 13-1 20-1 20-3 13-2 10-1 AC(H) 80-1 80-3 24VDC RESET SWITCH 10-5 80-2 80-4 PT-3 AC(H) 24VDC 13-3 21-2 13-4 10-3 DCPS 1 DCPS 2 21-1 AC(H) F GND MAIN RELAY 10-2 AC(C) 10-4 10-6...

  • Page 229: Di750 Overall Wiring Diagram (2/5)

    Di750 OVERALL WIRING DIAGRAM (2/5) 900-1 5VDC 900-2 SGND PSMB 900-6 REM/2 900-3 REM/1 900-5 5VDC 900-4 SW SIG 900-7 REM/3 900-8 CUREM 5VDC 903-1 RL3 DRIVE 903-2 5VDC 903-3 RL2 DRIVE 903-4 350-5 197-5 410-5 -5VDC 197-4 350-4 410-4 SGND 350-3 197-3...

  • Page 230: Di750 Overall Wiring Diagram (3/5)

    Di750 OVERALL WIRING DIAGRAM (3/5) SCANNER EXPOSURE LAMP INVB SCANNER SCANNER ORIGINAL SCANNER SCANNER BRAKE RETURN COOLING DRIVE SENSOR SENSOR MOTOR 601-7 601-1 600-3 24VDC 601-2 600-4 24VDC 601-3 TRAY 1 TRAY 2 TRAY 3 600-1 5VDC 601-4 600-2 SGND 601-5 600-5 PGND PAPER SIZE...

  • Page 231: Di750 Overall Wiring Diagram (4/5)

    Di750 OVERALL WIRING DIAGRAM (4/5) DRUM DRUM TEMPARATURE SENSOR BY-PASS VERTICAL PAPER FEED FIXING TRAY TRAY PAPER SIZE PAPER SIZE PAPER SIZE LOOP VERTICAL VERTICAL VERTICAL OPEN/CLOSE FIXING FIXING FIXING FIXING FIXING FIXING BLADE BLADE CHARGING CHARGING TONER CONTROL SENSOR LOWER UPPER BOARD...

  • Page 232: Di750 Overall Wiring Diagram (5/5)

    Di750 OVERALL WIRING DIAGRAM (5/5) PAPER FRONT FRONT EXIT DOOR DOOR SENSOR OPEN/CLOSE OPEN/CLOSE SENSOR SENSOR PS61 PS24 PS25 FN - 104 FN - 4 756-12-1 FIN TXD 218-1 756-11-2 SGND 218-2 756-10-3 FIN TXD REQ 218-3 756-9-4 SGND 218-4 756-8-5 FIN TXD ACK 218-5...
  • Page 233 JAM CODE LIST Blank page 4 - 29...

  • Page 234: Jam Code List

    JAM CODE LIST JAM CODE LIST Countermeasure Classification Cause Machine response code By-pass tray J10-1 PS44 (registration) is not turned If there is paper in the Remove the original ON within the specified time after copy process when from the bypass SD11 (pick up (by-pass)) is in the this jam occurs, the tray and remove the...
  • Page 235 JAM CODE LIST Countermeasure Classification Cause Machine response code Tray 3 J13-1 PS52 (paper pre-registration 3) is If there is a paper in Open the vertical not turned ON within the specified copying process conveyance door of time after MC8 (pre-registration when this jam occurs, the main body and MC3) is turned ON.
  • Page 236 JAM CODE LIST Countermeasure Classification Cause Machine response code Paper feed J17-2 PS54 (loop) is not turned ON If there is a paper in Open the vertical within the specified time after copying process paper conveyance conveyance PS47 (paper feed 1) is turned ON. when this jam occurs, jam access door of (tray 1)
  • Page 237 JAM CODE LIST Countermeasure Classification Cause Machine response code Second J31-1 PS45 (leading edge detection) is If there is a paper in Open the front right paper feed not turned ON within the specified copying process door, draw out the time after MC1 (Registration) is when this jam occurs, ADU, and remove...
  • Page 238 JAM CODE LIST Countermeasure Classification Cause Machine response code Front door J51-1 The front right or left door is The machine stops opened during copying. immediately. ADU inlet J92-1 PS58 (ADU paper reverse ) is not If there is a paper in paper turned ON within the specified copying...
  • Page 239 JAM CODE LIST Countermeasure Classification Cause Machine response code EDH-2 J61-1 PS301 (RADF open/close RADF stops immedi- Open the jam detection) is turned OFF during ately. access cover and RADF operation. If there is a paper in remove jammed J61-2 MS301 (cover open/close) is or after the copying paper.
  • Page 240 JAM CODE LIST Countermeasure Classification Cause Machine response code J62-8 EDH-2 When a large-size two-sided RADF stops immedi- Open the jam or iginal is ejected, PS307 ately. access cover and (original exit 1) is not turned ON If there is a paper in remove jammed or after the copying paper.
  • Page 241 JAM CODE LIST Countermeasure Classification Cause Machine response code EDH-2 J63-6 When a small-size one-sided RADF stops immedi- Open the jam original is ejected, PS314 (original ately. access cover and exit 2) is not turned OFF within If there is a paper in remove jammed the specified time.
  • Page 242 JAM CODE LIST Countermeasure Classification Cause Machine response code EDH-2 J65-20 PS314(original exit 2) is ON during RADF stops immedi- Open the movable idling. ately. cover and remove If there is a paper in jammed paper. J65-40 PS304(reverse jam detection) is or after the copying ON during idling.
  • Page 243 JAM CODE LIST Classification Cause Machine response Countermeasure code FN-104/ J72-25 PS25(folding paper exit) is not FNS/main body stops Remove jammed FN-4 turned ON within the specific time immediately. paper from FNS/main after folding is completed. body if present. J72-26 PS25(folding paper exit) is not turned OFF within the specific time after it turns ON.
  • Page 244 JAM CODE LIST Classification Cause Machine response Countermeasure code PK-1 J72-40 PS1(passage) is not turned ON PU/main body stops Remove jammed within the specific time after immediately. paper from PU/main leading/trailing/side edge PS on body. paper edge PS is turned ON. J72-41 PS1(passage) is not turned ON within the specific time after it...
  • Page 245 JAM CODE LIST Classification Cause Machine response Countermeasure code FN-104/ J72-90 FNS does not stop within the FNS/main body stops Remove jammed FN-4 specific time after it receives start- immediately. paper from FNS/main operation signal from the main body if present. body.
  • Page 246 JAM CODE LIST Blank page 4 - 42...

  • Page 247: Error Code List

    ERROR CODE LIST ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts Drive F13-01 A trouble detection signal is detected The machine stops M4 (paper feed) two consecutive times (the first signal immediately and RL1 PRCB (printer is ignored) in 4 seconds after turning (main) is turned OFF.
  • Page 248 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts Tray 2 F18-20 When M20 (up drive 2) is ON, an The machine stops M20 (up drive 2) M20 error detection signal is immediately and RL1 DCDB (DC drive detected.
  • Page 249 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts Tray 3 F18-33 PS22 (tray upper limit 3) which has Error code is not dis- M21 (up drive 3) been OFF is not turned ON within 10 played on operation DCDB (DC drive seconds of upward movement started by...
  • Page 250 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts By-pass tray F18-51 PS23 (tray upper limit (by-pass)) or Operation panel dis- M22 (up/down (by- PS43 (tray lower limit (by-pass)) plays jam error (J10- pass)) which has been OFF is not turned 01).
  • Page 251 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts Wire F21-01 • When SW1 (main switch) has been The machine stops M23 (charger cleaning ON and PS41 (charging wire immediately and RL1 cleaning) abnormality cleaning pad HP) has been OFF, (main) is turned OFF.
  • Page 252 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts Wire F21-02 • PS42 (charging wire cleaning pad The machine stops M23 (charger cleaning) cleaning limit) is not turned ON within 35 immediately and RL1 DCDB (DC drive board) abnormality seconds after detection of turning...
  • Page 253 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts Wire F21-05 • When SW1 (main switch) has been The machine stops M18 (transfer/sepa- cleaning ON and PS11 (transfer/separation immediately and ration cleaning) abnormality wire cleaning pad HP) has been OFF , RL1 (main) is turned ADUSDB (ADU...
  • Page 254 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts Motor F23-03 An M14 (cleaning blade) trouble The machine stops M2 (drum) abnormality detection signal (excessive current) immediately and RL1 M14 (blade) is detected. (main) is turned OFF.
  • Page 255 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts Motor F23-09 The blade READY signal (ready) is The machine stops M14 (cleaning abnormality not detected within 5 seconds after immediately and RL1 blade) turning ON of the blade replacement (main) is turned OFF.
  • Page 256 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts High voltage F28-04 An HV2 (high voltage unit 2) trouble The machine stops HV2 (high voltage power detection signal (blown 24V fuse) is immediately and RL1 unit 2) supply detected.
  • Page 257 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts Process F29-10 The control patch is not output be- The main body stops DPSB (drum abnormality cause Vl exceeds 350V during drum immediately and RL1 potential sensor potential correction.
  • Page 258 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts F32-04 The FM1 EM signal was abnormal 2 The machine stops ADUSDB (ADU abnormality seconds after turning ON of FM1 immediately and RL1 stand drive board) (paper exit).
  • Page 259 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts ADU stand F33-06 When M16 (Web drive) which has If there is a paper in M16 (Web drive) motor been OFF is tur ned ON, error copying process abnormality...
  • Page 260 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts Fixing F36-03 Underheating (-6°C or less) was de- The machine stops PRCB (printer sensor tected for TH1 (fixing temperature 1) immediately. RL1 control board) abnormality output voltage by the comparator cir- (main) is turned OFF.
  • Page 261 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts Scanner F41-04 During HP search operation, PS5 The machine stops SCDB (scanner abnormality (scanner HP) is not turned ON within immediately. RL1 drive board) 1 second after turning ON of PS7 (main) is turned OFF.
  • Page 262 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts F42-01 The FM7 EM signal was abnormal 2 The machine stops SCDB (scanner abnormality seconds after turning ON of FM7 immediately. drive board) (scanner cooling). Two seconds after (main) is turned OFF.
  • Page 263 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts Image E46-01 During image write, APC cannot be If copy operation is Write section control performed for sub-scanning beam being performed, the ICB (image control abnormality correction.
  • Page 264 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts Image E46-14 During image write, image data If copy operation is PRCB (printer control expansion from the memory to the being performed, the control board) abnormality printer is not completed within the main body stops after...
  • Page 265 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes warning occurrence parts code E46-26 Correction data saved on a resolution Error code is not dis- ICB (image control Image basis is not found. played on operation board) control panel.
  • Page 266 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes warning occurrence parts code Image E46-63 AGC was retried because of reduction Error code is not dis- L1(exposure lamp) control in exposure lamp intensity, but no played on operation abnormality error occurred.
  • Page 267 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts Communi- E50-10 Image processing board The machine stops PRCB (printer cation communication break error. immediately. RL1 control board) abnormality Initial data is not received from ICB (main) is turned OFF.
  • Page 268 ERROR CODE LIST Operation in case of Estimated abnormal Warning Classification Causes warning occurrence parts code F52-06 The FM4 EM signal was abnormal 2 The machine stops ACDB (AC drive board) abnormality seconds after turning ON of FM4 immediately. RL1 FM4 (main body cooling (main body cooling 2).
  • Page 269 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes warning occurrence parts code Counter F53-04 When C (K) (key counter) which has Error code is not dis- ACDB (AC drive abnormality been OFF is turned ON, a trouble played on operation board) detection signal (blown fuse/24 V off)
  • Page 270 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes warning occurrence parts code EDH-2 E60-01 A resend request was received after If copy operation is ICB (image control abnormality the main unit had sent data in being performed, the board) response to the data resend request main body stops after...
  • Page 271 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes warning occurrence parts code FN-104/FN-4 E70-1 Communication error. The main body and FNS CB (FNS control abnormality FNS are stopped board) immediately. RL1 Connector E70-2 Start response error. (main) is tur ned FNS CB (FNS control OFF .
  • Page 272 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes warning occurrence parts code FN-104/FN-4 F77-11 PS33(clincher HP/F) and PS34(stapler The main body and FNS CB (FNS control abnormality HP/F) do not go ON within the FNS are stopped board) specified time after the start of immediately.
  • Page 273 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes warning occurrence parts code FNS CB (FNS control PS22(folding knife HP) does not go FN-104/FN-4 F77-25 The main body and ON within the specified time after board) abnormality FNS are stopped M19(folding knife) starts operation of M19 (folding knife)
  • Page 274 ERROR CODE LIST Warning Operation in case of Estimated abnormal Classification Causes code warning occurrence parts F80-10 When SW1 (main switch) was turned RL1 (main) is turned C1 program abnormality F80-11 ON, an area which had not been written OFF. C2 program F80-12 by ISW was detected in the printer...
  • Page 275 ERROR CODE LIST When any one of the following abnormality occurs, the user can disconnect the faulty unit temporarily. When a warning code is displayed, press the RESET button and turning the main switch OFF/ON according to the LCD message allows you to use the machine until you turn the main switch OFF/ON again. Warning code Cause Unit to be disconnected...
  • Page 276 ERROR CODE LIST Blank page 4 - 72...

  • Page 277: Di750 Timing Chart (A4 Or 8.5 X 11, Life Size, Two Originals, Two Sheets Set, Tray 1)

    TIMING CHART Di750 TIMING CHART (A4 or 8.5 x 11, LIFE SIZE, TWO ORIGINALS, TWO SHEETS SET, TRAY 1) 4 - 73...

  • Page 278: Di750 Timing Chart (8.5 X 11, Life Size, Two Originals, Two Sheets Set, Tray 1)

    TIMING CHART Di750 TIMING CHART (8.5 x 11, LIFE SIZE, TWO ORIGINALS, TWO SHEETS SET, TRAY 1) 4 - 74...
  • Page 279 Copyright 2001 MINOLTA Co., Ltd. Printed in Japan Use of this manual should be strictly supervised to avoid disclosure of confidential information. MINOLTA Co., Ltd. 4014-7991-31 00080200 11563...

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