Olivetti PF-720 Service Manual
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Olivetti PF-720 Service Manual

Olivetti PF-720 Service Manual

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PF-720
SERVICE MANUAL
Code Y112020-4

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Summary of Contents for Olivetti PF-720

  • Page 1 Option Copier PF-720 SERVICE MANUAL Code Y112020-4...
  • Page 2 PUBLICATION ISSUED BY: Olivetti S.p.A. 77, Via Jervis - 10015 Ivrea (TO) Italy Copyright © 2010, Olivetti All rights reserved...
  • Page 3 This page is intentionally left blank.
  • Page 4 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 5 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 6 1.Installation Precautions WARNING • Do not use a power supply with a voltage other than that specified. Avoid multiple connections to one outlet: they may cause fire or electric shock. When using an extension cable, always check that it is adequate for the rated current....................•...
  • Page 7 2.Precautions for Maintenance WARNING • Always remove the power plug from the wall outlet before starting machine disassembly....• Always follow the procedures for maintenance described in the service manual and other related brochures............................• Under no circumstances attempt to bypass or disable safety features including safety mechanisms and protective circuits.
  • Page 8 • Do not remove the ozone filter, if any, from the copier except for routine replacement..... • Do not pull on the AC power cord or connector wires on high-voltage components when removing them; always hold the plug itself...................... •...
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  • Page 10: Table Of Contents

    3LM-1 CONTENTS 1-1 Specifications 1-1-1 Specifications............................1-1-1 1-1-2 Parts names............................1-1-2 1-1-3 Machine cross section ..........................1-1-3 1-2 Installation 1-2-1 Installation environment ..........................1-2-1 1-2-2 Unpacking ...............................1-2-2 (1) Precaution for unpacking........................1-2-2 (2) Unpacking ............................1-2-3 (3) Remove the tapes ..........................1-2-4 1-2-3 Installing the cassette heater (option) .....................1-2-5 1-3 Maintenance Mode 1-3-1 Maintenance mode ..........................1-3-1 (1) Executing a maintenance item ......................1-3-1...
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  • Page 12: Specifications

    1-1 Specifications 1-1-1 Specifications Paper supply method...... Friction feed (No. sheets: 500, 80 g/m , 2 cassettes) Paper size........A3, B4, A4, A4R, B5R, A5R, Folio, Ledger, Legal, OficioII, 8.5 x 13.5", Letter, LetterR, Excutive, ExcutiveR, StatementR, 8K, 16K, 16KR Paper weight........

  • Page 13: Parts Names

    1-1-2 Parts names Figure 1-1-1 Left cover 4 Cassette 3 Cassette 4 Paper width guides Paper width adjusting tab Paper length guide 1-1-2 Service Manual Y112020-4...

  • Page 14: Machine Cross Section

    1-1-3 Machine cross section Paper path Figure 1-1-2 Machine cross section 1-1-3 Y112020-4 Service Manual...
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  • Page 16: Installation Environment

    1-2 Installation 1-2-1 Installation environment Installation location (Be based on the machine establishment place.) Avoid direct sunlight or bright lighting. Ensure that the photo-conductor will not be exposed to direct sunlight or other strong light when removing paper jams. Avoid extremes of temperature and humidity, abrupt ambient temperature changes, and hot or cold air directed onto the machine.

  • Page 17: Unpacking

    1-2-2 Unpacking (1) Precaution for unpacking Hold the positions shown in the figure and remove the paper feeder from the outer case. Figure 1-2-1 1-2-2 Service Manual Y112020-4...
  • Page 18 (2) Unpacking Figure 1-2-2 Unpacking Paper feeder 10. Installation guide Outer case 11. Paper size plates Inner case 12. Plastic bag Bottom left pad 13. Retainer Bottom right pad 14. S tight screw M4 x 10 Upper left pad 15. Pins Upper right pad 16.

  • Page 19: Remove The Tapes

    (3) Remove the tapes Procedure 1. Remove three tapes. Tape Tape Tape Figure 1-2-3 1-2-4 Service Manual Y112020-4...

  • Page 20: Installing The Cassette Heater (Option)

    3LM-1 1-2-3 Installing the cassette heater (option) Installing the cassette heater requires the following component: Cassette heater (P/N AVGR12892C ): for 220 to 240 V specifications only Two (2) M4 x 10 S tight screws Procedure 1. Press the power key on the operation panel to off.
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  • Page 22: Maintenance Mode

    1-3 Maintenance Mode 1-3-1 Maintenance mode The machine is equipped with a maintenance function which can be used to maintain and service the machine. (1) Executing a maintenance item Start Enter 10871087 using Maintenance mode is entered. the numeric keys. Enter the maintenance item number using the cursor up/down keys The maintenance item is...

  • Page 23: Maintenance Mode Item List

    3LM-1 (2) Maintenance mode item list Item Initial Section Content of maintenance item setting* General U019 Displaying the ROM version Drive, paper U034 Adjusting the print start timing feed and LSUOUT TOP 0/0/0/0/0/0/0/0/0/0/0/0 paper convey- LSUOUT LEFT 0/0/0/0/0/0 ing system LSUOUT TOP B/W 0/0/0/0/0/0 Operation...

  • Page 24: Contents Of Maintenance Mode Items

    3LM-1 (3) Contents of maintenance mode items Maintenance Description item No. Displaying the ROM version U019 Description Displays the part number of the ROM fitted to each PWB. Purpose To check the part number or to decide, if the newest version of ROM is installed. Method 1.
  • Page 25 Maintenance Description item No. Adjusting the print start timing U034 Description Adjusts the leading edge registration or center line. Purpose Make the adjustment if there is a regular error between the leading edges of the copy image and original. Make the adjustment if there is a regular error between the center lines of the copy image and original. Method 1.
  • Page 26 3LM-1 Maintenance Description item No. U034 When [LSUOUT TOP B/W] is selected. Display Description Setting Default Change in range setting value per step LSUOUT TOP Paper feed from MP tray -3.0 to 3.0 0.1 mm MPT (L) B/W (when large size paper is used) LSUOUT TOP Paper feed from cassette -3.0 to 3.0...
  • Page 27 3LM-1 Maintenance Description item No. Adjustment: Center line adjustment U034 1. Select the item. Display Description Setting Default Change in range setting value per step LSUOUT LEFT Paper feed from MP tray -3.0 to 3.0 0.1 mm (MPT) LSUOUT LEFT Paper feed from cassette 1 -3.0 to 3.0 0.1 mm...
  • Page 28 Maintenance Description item No. Setting the paper feed device U247 Description Turns on motor and clutches of 3000-sheet paper feeder. Purpose To check the operation of motor and clutches of paper feed device. Method 1. Press the start key. The value varies depending to the option furnished. 2.
  • Page 29 3LM-1 Maintenance Description item No. Checking copy counts by paper feed locations U901 Description Displays or clears copy counts by paper feed locations. Purpose To check the time to replace consumable parts. Method 1. Press the start key. The counts by paper feed locations are displayed. Display Description MP TRAY...

  • Page 30: Paper Misfeed Detection

    1-4 Troubleshooting 1-4-1 Paper misfeed detection (1) Paper misfeed indication When a paper misfeed occurs, the machine immediately stops copying and displays the jam location on the operation panel. Paper misfeed detection can be reset by opening and closing the left cover 3 to turn left cover 3 switch off and on. (2) Paper misfeed detection conditions FSW3 PFCCL...
  • Page 31 Specified time Section Jam code Conditions 40/40 ppm 25/25 ppm 50/40 ppm 50/40 ppm 30/30 ppm Color Paper Feed switch 3 (FSW3) does not turn on within the 2853 ms 2324 ms 2112 ms feed sec- No paper feed from specified time of PF paper feed clutch 1 (PFPFCL1) tion cassette 3...

  • Page 32: Paper Misfeeds

    (3) Paper misfeeds Problem Causes/check procedures Corrective measures Paper is extremely curled. Change the paper. A paper jam in the Check if the paper feed pul- Check visually and replace any deformed pulleys. paper feed section is ley, forwarding pulley and indicated during separation pulley of cas- copying (no paper...
  • Page 33 Problem Causes/check procedures Corrective measures Broken feed switch 3 actua- Check visually and replace switch. A paper jam in the tor. paper feed section is Defective feed switch 3. Run maintenance item U031 and turn feed switch 3 on and off indicated during manually.

  • Page 34: Self-Diagnosis

    3LM-1 1-4-2 Self-diagnosis (1) Self-diagnostic function This unit is equipped with a self-diagnostic function. When a problem is detected, copying is disabled and the problem dis- played as a code consisting of C followed by a number, indicating the nature of the problem. A message is also displayed requesting the user to call for service.
  • Page 35 3LM-1 Remarks Code Contents Causes Check procedures/corrective measures C1900 Paper feeder EEPROM error Poor contact in the Check the connection of connector YC27 on When writing the data, the write data and connector termi- the engine PWB and the connector on the the read data is not continuously in nals.

  • Page 36: Electric Problems

    1-4-3 Electric problems Troubleshooting to each failure must be in the order of the numbered symptoms. Problem Causes Check procedures/corrective measures 1. Poor contact in the con- Reinsert the connector. Also check for continuity within the con- The paper feeder nector terminals.
  • Page 37 Problem Causes Check procedures/corrective measures 1. Poor contact of the left Reinsert the connector. Also check for continuity within the con- The message cover 4 switch connector nector cable. If none, remedy or replace the cable. requesting covers to terminals. be closed is dis- 2.

  • Page 38: Mechanical Problems

    1-4-4 Mechanical problems Problem Causes/check procedures Corrective measures Check if the surfaces of the following rollers Clean with isopropyl alcohol. No primary paper feed. and pulleys are dirty with paper powder: forwarding pulley, paper feed pulley, separa- tion pulley, feed roller and feed pulley. Check if the paper feed pulley or separation Replace (see page 1-5-2).
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  • Page 40: Assembly And Disassembly

    1-5 Assembly and Disassembly 1-5-1 Precautions for assembly and disassembly (1) Precautions Before starting disassembly, press the Power key on the operation panel to off. Make sure that the Power lamp is off before turning off the main power switch. And then unplug the power cable from the wall outlet. Turning off the main power switch before pressing the Power key to off may cause damage to the equipped hard disk.

  • Page 41: Paper Feed Section

    1-5-2 Paper feed section (1) Detaching and refitting the forwarding, paper feed and separation pulleys Replace the forwarding, paper feed and separation pulleys as follows. Procedure Removing the primary paper feed units 1. Remove cassette 3 and 4. 2. Remove the screw and then remove the Front upper cover front upper cover.
  • Page 42 Removing the forwarding pulley 4. Remove the stopper and spring from the pri- mary paper feed unit. Forwarding 5. Raise the forwarding pulley retainer in the pulley retainer direction the arrow, and remove from the pri- mary paper feed unit. Stopper Spring Figure 1-5-3...
  • Page 43 Removing the separation pulley 9. Remove the stop ring from the primary Separation pulley shaft paper feed unit. 10. Pull the separation pulley shaft in the direc- tion of the arrow and remove the separation pulley. Stop ring Separation pulley Figure 1-5-6 11.

  • Page 44: Detaching And Refitting Pf Paper Size Width Switch 1, 2

    (2) Detaching and refitting PF paper size width switch 1, 2 Replace PF paper size width switch 1 and 2 as follows. Caution: After replacing paper feeder paper width switch, be sure to perform (4) Adjusting the position of the rack adjuster. Procedure 1.
  • Page 45 6. Remove two screws from the back of the Screw rack adjuster and then the PF paper size width switch. Screw PF paper size width switch Rack adjuster Figure 1-5-9 7. Apply the specified grease to the printed surface of the new PF paper size width Apply the specified grease.

  • Page 46: Detaching And Refitting The Pf Paper Conveying Clutch And Pf Paper Feed Clutch 1/2

    (3) Detaching and refitting the PF paper conveying clutch and PF paper feed clutch 1/2 Replace PF paper conveying clutch and PF paper feed clutch 1/2 as follows. Procedure Removing the PF paper conveying clutch 1. Remove the primary paper feed units (see page1-5-2 ).
  • Page 47 Removing the PF paper feed clutch 1 and 2 6. Release the wire saddle. 7. Remove the connector A, B, C, D and E. 8. Remove four screws and then remove the drive unit. Wire saddle Connector A Drive unit Connector C Screw Screw...
  • Page 48 10. Remove each two shaft covers, stop rings and bushes from drive unit. 11. Remove four screws and then remove the drive plate and ground plate. Screw Bush Ground plate Stop ring Shaft cover Screws Drive unit Drive plate Bush Screw Stop ring Shaft cover...

  • Page 49: Adjusting The Position Of The Rack Adjuster

    (4) Adjusting the position of the rack adjuster Perform the following adjustment if there is a regular error between the center lines of the copy image and the original on the paper fed from the cassette. Procedure Start Enter maintenance mode. Correct image Output Output...

  • Page 50: Mechanical Construction

    2-1 Mechanical Construction 2-1-1 Mechanical construction The paper feeder feeds paper from either of its two cassettes to the machine. When paper is fed from cassette 4 of the paper feeder, the PF paper conveying clutch (PFCCL) is operated to rotate the feed roller and pulley to carry the paper into the machine.
  • Page 51 PFMPWB FCL REM YC2-4 UFCL REM YC2-5 UCLLSW YC1-7 PFPF PFLSW1 UCPESW YC1-8 PFPSW1 ULM OUT YC2-12,14 PFCCL PFLM1 UP SIG1,2 YC2-11,15 UPCLE SW PFFSW YC8-3 PFPLSW1 UP DIG0,1,2 YC3-1,2,3 PFPWSW1 LCLLSW YC1-9 PFLSW2 PFPF LCPESW YC1-10 PFPSW2 LLM OUT YC2-8,10 PFLM2 LO SIG1,2...

  • Page 52: Electrical Parts Layout

    2-2 Electrical Parts Layout 2-2-1 Electrical parts layout Machine front Machine inside Machine rear Figure 2-2-1 Layout of electrical parts PF main PWB (PFMPWB) ......Controls electrical parts. Left cover 4 switch (LC4SW) ....... Breaks the safety circuit when left cover 4 is opened, and resets paper jam detection.
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  • Page 54: Pf Main Pwb

    2-3 Operation of the PWBs 2-3-1 PF main PWB PFMPWB START/STOP,CLOCK, UP DIG0,1,2 GAIN,CW/CCW PFPWSW1 PFDM LO DIG0,1,2 PFPWSW2 ULM OUT PFLM1 UP SIG1,2 LFEED SW PFFSW LLM OUT UPCLE SW PFPLSW1 PFLM2 LO SIG1,2 (U1) LPCLE SW PFPLSW2 FCL REM PFCCL UCPESW PFPSW1...
  • Page 55 Figure 2-3-2 PF main PWB silk-screen diagram 2-3-2 Service Manual Y112020-4...
  • Page 56 Connector Pin No. Signal Voltage Description 5 V DC 5 V DC supply to PFPSW1 Connected 5 V DC 5 V DC supply to PFLSW1 to the PF 5 V DC 5 V DC supply to PFPSW2 paper switch 5 V DC 5 V DC supply to PFLSW2 1/2 and PF lift switch 1/...
  • Page 57 Connector Pin No. Signal Voltage Description UP DIG0 0/5 V DC PFPWSW1: On/Off Connected UP DIG1 0/5 V DC PFPWSW1: On/Off to the PF UP DIG2 0/5 V DC PFPWSW1: On/Off paper size Ground width switch 1/2, PF feed LFEED SW 0/5 V DC PFFSW: On/Off switch and...

  • Page 58: List Of Maintenance Parts

    2-4 Appendixes List of maintenance parts Maintenance part name Alternative Fig. Ref. Part No. part No. Name used in service manual Name used in parts list Feed roller PARTS ROLLER FEED AVGR12893G Feed pulley PULLEY FEED no code Paper feed pulley PULLEY,PAPER FEED 906081L Separation pulley...
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  • Page 60: Wiring Diagram

    Wiring diagram PFMPWB 1 UP DIG0 FCL REM 2 UP DIG1 PFCCL 3 UP DIG2 PFPWSW1 4 GND UP SIG2 PFLM1 UP SIG1 ULM OUT SINK ULM OUT SOR 11 LO DIG0 12 LO DIG1 PFPWSW2 13 LO DIG2 14 GND LO SIG2 PFLM2 LO SIG1...
  • Page 61 UPDATING STATUS DATE UPDATED PAGES PAGES CODE 04/2010 EDITION Y112020-4...

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