Olivetti SRDF-1 Service Manual
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Olivetti SRDF-1 Service Manual

Olivetti SRDF-1 Service Manual

Option for copiers
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Option for copiers
SRDF-1
SERVICE MANUAL
Code Y687521M-01

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Summary of Contents for Olivetti SRDF-1

  • Page 1 Option for copiers SRDF-1 SERVICE MANUAL Code Y687521M-01...
  • Page 2 PUBLICATION ISSUED BY: Olivetti Lexikon, S.p.A. Documentazione 77, Via Jervis - 10015 Ivrea (Italy) Copyright © 1999, by Olivetti All rights reserved Printed in Italy by:...
  • Page 3 Safety precautions This booklet provides safety warnings and precautions for our service personnel to ensure the safety of their customers, their machines as well as themselves during maintenance activities. Service personnel are advised to read this booklet carefully to familiarize themselves with the warnings and precautions described here before engaging in maintenance activities.
  • Page 4 Safety warnings and precautions Various symbols are used to protect our service personnel and customers from physical danger and to prevent damage to their property. These symbols are described below: DANGER: High risk of serious bodily injury or death may result from insufficient attention to or incorrect compliance with warning messages using this symbol.
  • Page 5 indicates that action is required. The specific action required is shown inside the symbol. General action required. Remove the power plug from the wall outlet. Always ground the copier. 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.
  • Page 6 • Always handle the machine by the correct locations when moving it..• Always use anti-toppling and locking devices on copiers so equipped. Failure to do this may cause the copier to move unexpectedly or topple, leading to injury................•...
  • Page 7 • Check that the power cable covering is free of damage. Check that the power plug is dust-free. If it is dirty, clean it to remove the risk of fire or electric shock..................• Never attempt to disassemble the optical unit in machines using lasers. Leaking laser light may damage eyesight.
  • Page 8 • After maintenance, always check that all the parts, screws, connectors and wires that were removed, have been refitted correctly. Special attention should be paid to any forgotten connector, trapped wire and missing screws..................• Check that all the caution labels that should be present on the machine according to the instruction handbook are clean and not peeling.

  • Page 9: Table Of Contents

    CONTENTS THEORY AND CONSTRUCTION SECTION 1-1 Specifications 1-1-1 Specifications ................1-1-1 1-2 Mechanical Construction 1-2-1 Part names and their functions ............ 1-2-1 1-2-2 Machine cross section ..............1-2-2 1-2-3 Drive system ................1-2-3 1-2-4 Mechanical construction .............. 1-2-5 II ELECTRICAL SECTION 2-1 Electrical Parts Layout 2-1-1 Electrical parts layout ..............

  • Page 11: Theory And Construction Section

    THEORY AND CONSTRUCTION SECTION...

  • Page 13: Specifications

    CONTENTS 1-1 Specifications 1-1-1 Specifications ..................1-1-1 687520Y Service Manual...
  • Page 15 1-1-1 Specifications Original feed system ....Automatic feed Originals ........Sheets Original weights ......Single-sided original mode: 35 – 160 g/m ..........Double-sided original mode: 50 – 120 g/m Original paper ......Plain paper, thermal paper, art paper, colored paper Original sizes ......

  • Page 17: Mechanical Construction

    CONTENTS 1-2 Mechanical Construction 1-2-1 Part names and their functions ............1-2-1 1-2-2 Machine cross section ................ 1-2-2 1-2-3 Drive system ..................1-2-3 1-2-4 Mechanical construction ..............1-2-5 (1) Original feed section ..............1-2-5 Original feed timing ..............1-2-7 (2) Original switchback section ............1-2-8 Operation of original switchback ..........

  • Page 19: Part Names And Their Functions

    1-2-1 Part names and their functions Figure 1-2-1 1 Original table 5 Eject guide 2 Original insert guides 6 SRDF open lever 3 Left cover 7 Slit glass 4 Top cover 8 Original set indicator 687520Y Service Manual 1-2-1...

  • Page 20: Machine Cross Section

    1-2-2 Machine cross section 1-2-2 687520Y...

  • Page 21: Drive System

    1-2-3 Drive system (As viewed from machine rear) Figure 1-2-3 Drive system (inside rear of machine) 1 Original feed motor pulley 10 DF registration pulley 28/18 2 Pulley 35/22/22 11 Idle gear 15 3 Idle gear 26 12 Idle gear 20 4 Original feed clutch gear 13 Switchback gear 18 5 DF original feed pulley 28...
  • Page 22 (As viewed from machine front) Figure 1-2-4 Drive system (inside front of machine) 1 Lower original conveying pulley 25/18 7 Joint gear 14 2 Gear 18/25 8 JAM release gear 14 3 Eject gear 18 9 Tension pulley 4 Middle original conveying pulley 18 10 Eject drive belt 5 Upper original conveying pulley 18 11 Conveying drive belt 2...

  • Page 23: Mechanical Construction

    1-2-4 Mechanical construction (1) Original feed section The original feed section consists of the parts shown in Figure 1-2-5. An original placed on the original table is conveyed to the original switchback section or the original convey- ing section. Figure 1-2-5 Original feed section 1 Original table 8 DF registration pulley 2 DF forwarding pulleys...
  • Page 24 OFSOL OFCL OFSW OSSW DFDPCB Figure 1-2-6 Original feed section block diagram 1-2-6 687520Y...

  • Page 25: Original Feed Timing

    Original feed timing 200 ms OFSOL A 200 ms OFSOL R OFCL Fwd. rotation Rev. rotation 556 P* 20 ms OFSW OSBSW 288 P* DFTSW + 30 ms * Burst of OFM pulses Timing chart 1-2-1 Original feed (in double-sided original mode) A The OFSOL A signal turns on for 200 ms and then the original feed solenoid (OFSOL) turns on, lowering the DF forwarding pulleys and releasing the original stopper to convey the original forward.

  • Page 26: Original Switchback Section

    (2) Original switchback section The original switchback section consists of the parts shown in Figure 1-2-7. The original from the original feed section or original conveying section is reversed and conveyed to the original conveying section. Figure 1-2-7 Original switchback section 1 Switchback pulley 5 Switchback guide 2 Switchback roller...
  • Page 27 SBPSOL SBFSSOL OSBSW DFDPCB Figure 1-2-8 Original switchback section block diagram 687520Y Service Manual 1-2-9...

  • Page 28: Operation Of Original Switchback

    Operation of original switchback In the double-sided original mode, the switchback feedshift solenoid (SBFSSOL) turns on, changing the position of the switchback feedshift guide. This switches the path of the original to the original switchback section to where the original is fed. The switchback feedshift solenoid (SBFSSOL) then turns off, allowing the switchback feedshift guide to return to the original position by which the path of the original is switched back to the original conveying section.

  • Page 29: Original Conveying Section

    (3) Original conveying section The original conveying section consists of the parts shown in Figure 1-2-10. Synchro- nized with the copier scanning operation, the original is conveyed across the slit glass and ejected when scanning is complete. In the double-sided original mode, the eject feedshift solenoid (EFSSOL) turns on, mov- ing the eject feedshift guide to switch the path of the original.
  • Page 30 EFSSOL DFTSW DFDPCB Figure 1-2-11 Original conveying section block diagram 1-2-12 687520Y...

  • Page 31: Original Switchback/Conveying Timing

    Original switchback/conveying timing Scanning speed 100 ms Fwd. rotation 556 P* Rev. rotation 20 ms OFSW 288 P* SBFSSOL 115 P* SBPSOL OSBSW Scanning speed EFSSOL DFTSW * Burst of OFM pulses Timing chart 1-2-2 Reversing the first face of the original A During primary original feed, when the original feed switch (OFSW) turns on, the switchback feedshift solenoid (SBFSSOL) also turns on, changing the position of the switchback feedshift guide.
  • Page 32 Scanning request signal: On Scanning speed Fwd. rotation Rev. rotation 327 P* + 100 ms OFSW 100 ms 115 P* SBFSSOL 288 P* SBPSOL 564 P* 2337 P* + 30 ms OSBSW Scanning speed EFSSOL DFTSW *1 Burst of OFM pulses *2 Burst of OCM pulses Timing chart 1-2-3 Reversing of the second face of the original and ejection A 564 OFM pulses after the scanning of the first face (reverse face) of the original...

  • Page 33: Electrical Section

    ELECTRICAL SECTION...

  • Page 35: Electrical Parts Layout

    CONTENTS 2-1 Electrical Parts Layout 2-1-1 Electrical parts layout ................. 2-1-1 687520Y Service Manual...
  • Page 37 2-1-1 Electrical parts layout Machine front Machine inside Machine rear Figure 2-1-1 PCBs 1. DF driver PCB (DFDPCB) ........Controls electrical components of SRDF. 2. Original set LED PCB (OSLEDPCB) ....Indicates presence of originals on the SRDF or an original jam. 687520Y Service Manual 2-1-1...
  • Page 38 Machine front Machine inside Machine rear Figure 2-1-2 Switches and sensors 1. DF safety switch 1 (DFSSW1) ......Breaks the safety circuit when the SRDF is opened; resets original jam detection. 2. DF safety switch 2 (DFSSW2) ......Breaks the safety circuit when the left cover is opened;...
  • Page 39 Machine front Machine inside Machine rear Figure 2-1-3 Motors 1. Original feed motor (OFM) ........Drives the original feed and switchback sections. 2. Original conveying motor (OCM) ......Drives the original conveying section. 687520Y Service Manual 2-1-3...
  • Page 40 Machine front Machine inside Machine rear Figure 2-1-4 Clutches and solenoids 1. Original feed solenoid (OFSOL) ......Moves the DF forwarding pulleys vertically. 2. Switchback feedshift solenoid (SBFSSOL) ..Moves the switchback feedshift guide. 3. Eject feedshift solenoid (EFSSOL) ...... Moves the eject feedshift guide. 4.

  • Page 41: Detection Of Paper Misfeed

    CONTENTS 2-2 Detection of Paper Misfeed 2-2-1 Original misfeed detection ..............2-2-1 2-2-2 Original misfeed detection conditions ..........2-2-2 (1) Initial movement confirmation JAM ........... 2-2-2 (2) No paper feed ................2-2-2 (3) An original jam in the original feed section ....... 2-2-2 (4) An original jam in the original conveying section ......

  • Page 43: Original Misfeed Detection

    2-2-1 Original misfeed detection When an original jams, the machine immediately stops operation and a message is shown on the copier operation panel. The SRDF original set indicator also flashes red. To remove the jammed original, open the SRDF or the left cover. To reset the original misfeed detection, open and close the SRDF or left cover to turn DF safety switch 1 or 2 off and on.

  • Page 44: Original Misfeed Detection Conditions

    2-2-2 Original misfeed detection conditions (1) Initial movement confirmation JAM • When the DF START signal is received, switches other than the original set switch (OSSW) and the original size length switch (OSLSW) on the original table are on. (2) No paper feed •...
  • Page 45 • During original switchback operation in the double-sided original mode, the original feed switch (OFSW) remains on when the original switchback switch (OSBSW) turns off. OSBSW OFSW Timing chart 2-2-3 (4) An original jam in the original conveying section • During the secondary original feed in the single-sided or double-sided original mode, the DF timing switch (DFTSW) does not turn on within 10200 original conveying motor (OCM) pulses from the DF timing switch (DFTSW) turning on.
  • Page 46 (5) An original jam in the original switchback section • During the switchback operation of an original in the double-sided original mode, the original switchback switch (OSBSW) does not turn on within 2520 original feed motor (OFM) pulses from the start of reverse rotation of the original feed motor (OFM). On (Rev.) 2520 P* OSBSW...

  • Page 47: Operation Of The Pcbs

    CONTENTS 2-3 Operation of the PCBs 2-3-1 DF driver PCB ..................2-3-1 687520Y Service Manual...

  • Page 49: Df Driver Pcb

    2-3-1 DF driver PCB 24 V DC 24 V DC OCM A Motor OCM B driver OCM A OCM B 24 V DC 24 V DC Copier OFM A Motor OFM B driver OFM A OFM B Switches Clutches, solenoids Figure 2-3-1 DF driver PCB block diagram The DF driver PCB consists of the motor driver ICs.

  • Page 51: Set Up And Adjustment Section

    SET UP AND ADJUSTMENT SECTION...

  • Page 53: Installation

    CONTENTS 3-1 Installation 3-1-1 Unpacking and installation ..............3-1-1 687520Y Service Manual...

  • Page 55: Unpacking And Installation

    3-1-1 Unpacking and installation Figure 3-1-1 1 Bottom pads 4 Outer case 2 Top pad 5 Machine cover 3 Plastic bag 6 Bar-code labels • Installation manual 7 SRDF • Instruction handbook 687520Y Service Manual 3-1-1...

  • Page 57: Assembly And Disassembly

    CONTENTS 3-2 Assembly and Disassembly 3-2-1 Precautions for assembly and disassembly ........3-2-1 (1) Precautions ................3-2-1 3-2-2 Procedure for assembly and disassembly ......... 3-2-2 (1) Detaching and refitting the DF original feed pulley and the DF forwarding pulleys ............3-2-2 (2) Detaching and refitting the DF separation pulley ......

  • Page 59: Precautions For Assembly And Disassembly

    3-2-1 Precautions for assembly and disassembly (1) Precautions • Be sure to turn the main switch off and disconnect the power plug before starting disassembly. 687520Y Service Manual 3-2-1...

  • Page 60: Procedure For Assembly And Disassembly

    3-2-2 Procedure for assembly and disassembly (1) Detaching and refitting the DF original feed pulley and the DF forwarding pulleys Clean or replace the DF original feed pulley and the DF forwarding pulleys as follows. Procedure 1. Open the left cover. 2.
  • Page 61 • Detaching the DF original feed pulley 4. Remove the two stop rings and then the DF original feed pulley from the original feed front shaft. DF forwarding belt DF forwarding pulleys Original feed front shaft DF original feed pulley gear 28 Stop rings One-way clutch...
  • Page 62 • Detaching the DF forwarding pulleys 5. Remove the stop ring and the DF forwarding belt on the DF forwarding pulley 20, and then remove the DF forwarding pulleys from the forwarding shaft. 6. Clean or replace the DF original feed pulley and the DF forwarding pulleys. 7.

  • Page 63: Detaching And Refitting The Df Separation Pulley

    (2) Detaching and refitting the DF separation pulley Clean or replace the DF separation pulley as follows. Procedure 1. Open the left cover. 2. Remove the upper original feed section cover (two screws). 3. Remove the rear cover (two screws). 4.
  • Page 64 5. Remove the two screws securing the DF original feed lower guide and the two screws securing the DF original feed upper guide. 6. Loosen the other two screws on the DF original feed lower guide. While lifting the DF original feed upper guide and pressing the original set switch actuator, remove the DF original feed lower guide.
  • Page 65 8. Remove the two stop rings and pin to remove the DF separation pulley from the separation shaft. 9. Clean or replace the DF separation pulley. 10. Refit all removed parts. • When fitting the DF separation pulley, ensure that the side having the one-way clutch faces the machine rear.

  • Page 66: Adjusting The Df Center Line

    (3) Adjusting the DF center line Perform the following adjustment if there is a regular error between the centers of the original and the copy image when the SRDF is used. Note: Use an original with a reference line drawn down the center. Procedure Reference line Start...

  • Page 67: Adjusting The Df Original Scanning Start Position

    (4) Adjusting the DF original scanning start position Perform the following adjustment if there is a regular error between the leading edges of the original and the copy image when the SRDF is used. Note: Use an original with a reference line drawn 10 mm from the leading edge. Procedure 10 mm Start...

  • Page 68: Adjusting The Df Original Scanning End Position

    (5) Adjusting the DF original scanning end position Perform the following adjustment if there is a regular error between the trailing edges of the original and the copy image when the SRDF is used. Procedure Start Enter maintenance mode. Original Copy Copy example 1...

  • Page 69: Adjusting Magnification For Copying Using The Df

    (6) Adjusting magnification for copying using the DF Perform the following adjustment if magnification is incorrect when SRDF is used. Main scanning direction Procedure Start Enter maintenance mode. Auxiliary scanning direction Place an original on the SRDF and make a test copy. Figure 3-2-11 Change the setting.

  • Page 71: Troubleshooting

    CONTENTS 3-3 Troubleshooting 3-3-1 Image formation problems ..............3-3-1 (1) There is a regular error between the centers of the original and copy image when the SRDF is used........3-3-2 (2) There is a regular error between the leading edges of the original and copy image when the SRDF is used.

  • Page 73: Image Formation Problems

    3-3-1 Image formation problems (1) There is a regular (2) There is a regular error between the error between the centers of the original leading edges of the and copy image when original and copy the SRDF is used. image when the SRDF is used.

  • Page 74: Original And Copy Image When The Srdf Is Used

    (1) There is a regular Causes error between the 1. Misadjusted DF center line. centers of the original and copy image when the SRDF is used. Causes Check procedures/corrective measures 1. Misadjusted DF center line. Readjust the DF center line (see page 3-2-8). (2) There is a regular Causes error between the...

  • Page 75: Original Misfeeds

    3-3-2 Original misfeeds Problem Causes/check procedures Corrective measures A piece of paper torn from an Remove any found. An original original is caught around the jams when the original feed switch. main switch is Defective original feed switch. With 5 V DC present at CN6-B4 turned on.

  • Page 76: Copying (A Jam In The Original Conveying Section)

    Problem Causes/check procedures Corrective measures Defective DF timing switch. With 5 V DC present at CN6-A15 An original on the DF driver PCB, check if jams in the CN6-A14 on the DF driver PCB original feed remains low when the DF timing section during switch is turned on and off.

  • Page 77: Copying (A Jam In The Original Switchback Section)

    Problem Causes/check procedures Corrective measures Defective DF timing switch. With 5 V DC present at CN6-A15 An original on the DF driver PCB, check if jams in the CN6-A14 on the DF driver PCB original con- remains low when the DF timing veying section switch is turned on and off.

  • Page 78: Original Jams Frequently

    Problem Causes/check procedures Corrective measures An original outside the specifi- Use only originals conforming to Original jams cations is used. the specifications. frequently. The DF forwarding pulleys, DF Clean with isopropyl alcohol. original feed pulley or DF switchback pulley is dirty with paper powder.

  • Page 79: Pcb Terminal Voltages

    3-3-3 PCB terminal voltages Precautions • When handling the circuit boards, do not touch the components with bare hands. • ICs can be damaged by static discharges. If a PCB contains ICs, do not touch the ICs, cable connectors or edge connectors. •...
  • Page 80 Terminals (CN) Voltage Remarks 2-13 1-9, -10 5/0 V DC OFM control signal, input (OFM RET) 2-14 1-9, -10 5/0 V DC OFM enable signal, input 2-15 1-9, -10 5/0 V DC OFSOL on, input (OFSOL A) 2-16 1-9, -10 5/0 V DC OFSOL off, input (OFSOL R) 2-17...
  • Page 81 Terminals (CN) Voltage Remarks 5-B1 1-3, -4 24 V DC 24 V DC supply for OFM, output (A) 5-B2 1-3, -4 24 V DC 24 V DC supply for OFM, output (B) 5-B3 1-3, -4 24/0 V DC (pulse) OFM motor coil energization pulse, output (A) 5-B4 1-3, -4...

  • Page 82: Electrical Problems

    3-3-4 Electrical problems Problem Causes Check procedures/corrective measures Defective original Check for continuity across the coil. If none, The original feed motor coil. replace the original feed motor. feed motor Check for continuity across the connector The connector ter- does not minals of the origi- terminals.

  • Page 83: The Switchback Feedshift Solenoid Does Not Operate

    Problem Causes Check procedures/corrective measures Defective switch- Check for continuity across the coil. If none, The switch- back feedshift sole- replace the switchback feedshift solenoid. back feedshift noid coil. solenoid does The connector ter- Check for continuity across the connector not operate.

  • Page 84: The Original Feed Clutch Does Not Operate

    Problem Causes Check procedures/corrective measures Defective original Check for continuity across the coil. If none, The original feed clutch coil. replace the original feed clutch. feed clutch The connector ter- Check for continuity across the connector does not minals of the origi- terminals.

  • Page 85: An Original Jams When The Main Switch Is Turned On

    Problem Causes Check procedures/corrective measures A piece of paper Remove any found. An original torn from an origi- jams when the nal is caught main switch is around the DF tim- turned on. ing switch. (cont.) Defective DF tim- With 5 V DC present at CN6-A15 on the DF ing switch.

  • Page 86: Mechanical Problems

    3-3-5 Mechanical problems Problem Causes/check procedures Corrective measures The surfaces of the DF forward- Check and clean them with iso- No primary ing pulleys, DF original feed propyl alcohol if they are dirty. original feed. pulley or DF separation pulley are dirty with paper powder.

  • Page 87: Appendixes

    CONTENTS 3-4 Appendixes Timing chart No. 1 ..................3-4-1 Timing chart No. 2 ..................3-4-2 Timing chart No. 3 ..................3-4-3 DF driver PCB ....................3-4-4 Connection diagram ..................3-4-5 Wiring diagram ....................3-4-6 687520Y Service Manual...
  • Page 89 Timing chart No. 1 Original feed operation 1: single-sided original mode, multiple originals Primary original feed Repeats Original ejection OSSW CN6-B2 200 ms OFSOL A CN5-B12 200 ms OFSOL R CN5-B13 470 ms* OFCL CN5-A5 30 ms + 288 P* 20 ms 30 ms + 288 P* 20 ms...
  • Page 90 Timing chart No. 2 Original feed operation 2: double-sided original mode, multiple originals ( Repeats Scanning the first face Switchback operation Primary original feed OSSW CN6-B2 200 ms OFSOL A CN5-B12 OFSOL R CN5-B13 OFCL CN5-A5 Scanning speed 20 ms 115 P* 100 ms 30 ms...
  • Page 91 Timing chart No. 3 Original feed operation 2: double-sided original mode, multiple originals ( Repeats Switchback operation Primary feed of next original Scanning the image Original ejection OSSW CN6-B2 OFSOL A CN5-B12 200 ms OFSOL R CN5-B13 OFCL CN5-A5 Scanning speed 115 P* 100 ms 327 P* + 100 ms...

  • Page 92: Df Driver Pcb

    DF driver PCB OSSW CN6-B2 SBFSSOL CN2-17 CN5-B8 SBFSSOL CN3-1 OSSW CN3-2 OFSW EFSSOL CN2-19 CN5-A7 EFSSOL OFSW CN6-B5 OFCL CN2-20 CN5-A5 OFCL OSBSW CN6-A5 CN5-A2 SBPSOL (A) CN3-3 OSBSW SBPSOL (A) CN2-21 CN3-4 DFTSW CN5-A3 SBPSOL (B) OFTSW CN6-A14 SBPSOL (B) CN2-22 CN5-B12...

  • Page 93: Connection Diagram

    Connection diagram SBPSOL OFCL OFSOL DFDPCB Mi2 (11P) White Mi2 (12P) White Mi2 (11P) Red Mi2 (11P) Red 11 10 9 8 7 6 5 4 3 2 1 11 10 9 8 7 6 5 4 3 2 1 11 10 9 8 7 6 5 4 3 2 1 11 10 9 8 7 6 5 4 3 2 1 OSLED...

  • Page 94: Wiring Diagram

    Wiring diagram Mi2 (12P) RED Mi2 (11P) RED Mi2 (12P) WHITE Mi2 (11P) WHITE C7-1 GN C7-2 GN DFDPCB C5-B11 GY 24 V C5-B12 GY OFSOL OFSOL (A) (CN3) (CN2) C5-B13 GY (CN1) (CN6) OFSOL (R) C7-4 B-15 C7-5 B-14 (CN5) C15-3 GY C22-1 GY...
  • Page 95 UPDA A A A A TING ST TING ST TING ST TING ST TING STA A A A A TUS DATE UPDATED PAGES PAGES CODE DELETED 10/1999 687520Y-00 03/2000 EDITION 687521M-01...

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