Page 1 Thank You for purchasing this Factory Service Manual on EBAY from PCTECHINFO! Click Here for more Factory Service Manuals for other Computer and Printer / Copier Manufacturers from PCTECHINFO!
Page 2 OKIDATA Service Training Manual. 09/17/97 Note: This Adobe Acrobat version of the Okidata Service Training Manual was built with the pictures rendered at 300 dpi, which is ideal for printing, but does not view on most displays well.
Page 3: Table Of Contents
Table of Contents Page Service Guide OL1200 0 About This Manual Front Cover 1 Configuration 1. Configuration 1.2 Printer Configuration 1.3 Optional Configuration 1.4 Specification 1.5 Safety Standards ..1.5.2 Warning Label 2 Operation Description 2. Operation Description 2.1 Main Control Board (Aolm-Pcb) 2.2 Power/Sensor Board...
Page 4 Table of Contents Page ..3.3.3 Dc Fan Motor ..3.3.4 Manual Feed Hopper Assy ..3.3.5 Side Cover (R) (Operator Panel Assy) ..3.3.6 Earth Plate Bk (R) (Aolm-Pcb, Ic Cover) ..3.3.7 Stacker Cover Assy, Damper Arm, And Washer ..3.3.8 Damper ..3.3.9 Stacker Full Sensor Assy ..3.3.10 Cable Cover (Cable Guides A And B) ..3.3.11 Eject Roller Assy ..3.3.12 Paper Supply Guide D...
Page 5 Table of Contents Page 4.2 Adjustment When Replacing A Part ..4.2.1 Setting of LED head drive time ..4.2.2 Resetting the fuser counter ..4.2.3 Destination setting 5 Periodic Maintenance 5.1 Periodic Parts Replacement 5.2 Cleaning ..5.2.1 Cleaning of LED Lens Array ..5.2.2 Cleaning Page Function 5.3 Lubrication - General Information 6 Troubleshooting Procedures...
Page 6 Table of Contents Page ..6. Print voids ..7. Poor fusing ..8. White belts or streaks in the vertical direction 7 Wiring Diagram 7.1 Wiring Diagram 7.2 PCB Layout 7.3 Resistance Check 7.4 Short Plug Setting 8 Parts List 8. Parts List Main Chassis Unit Front Feeder Unit Base Unit...
Page 7 Table of Contents Page ..2.2 Hopper Mechanism 3. Parts Replacement ..3.2 Parts Layout ..3.3 Parts Replacement Methods ..3.3.1 Separator ..3.3.2 AOLE-PCB ..3.3.3 Square-shaped connector ..3.3.4 Hopping Motor ..3.3.5 Planet gear ..3.3.6 Roller B ..3.3.7 Roller A ..3.3.8 Mini pitch belt & Feed roller 4.
Page 8: Configuration
1. CONFIGURATION 1.1 System Configuration OL1200 consists of control and engine blocks as the standard configuration (See Figure below 1-1.) In addition, the following options are also available. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business...
Page 9: Configuration
Page: 3 Service Guide OL1200 Chapter 1 Configuration 1.2 Printer Configuration The printer unit consists of the following hardware components: - Electro-photographic processor - Paper feeder - Controller - Operator panel - Power/sensor board Figure 1-2 shows the printer unit configuration.
Page 11: Optional Configuration
Page: 4 Service Guide OL1200 Chapter 1 Configuration 1.3 Optional Configuration The options below are available for use with OL1200. They are sold separately from the printer unit. (1) Power Envelope Feeder (2) High Capacity Second Paper Feeder (3) Font Card (4) RAM module •...
Page 12 • 16MB RAM module Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 13: Specification
Page: 5 Service Guide OL1200 Chapter 1 Configuration 1.4 Specification (1) Type Desk top (2) External dimensions Height 10.6 (270 mm) (excludes protruding Width 14.4 (366 mm) Portion) Depth 16.9 (430 mm) (3) Weight 15.2 kg (33.5 lbs) (4) Development method Dry electrophotography Exposure method LED stationary head (5) Paper used <Type>...
Page 15: Safety Standards
1.5.1 Certification label The safety certification label is affixed to the printer in the position below. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 16: Warning Label
The warning label is affixed to the portion which may cause an injury to human body. Follow the instructions on warning labels during maintenance. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 17: Operation Description
Chapter 2 Operation Description 2. OPERATION DESCRIPTION OL1200 consists of a control board, a power supply/sensor board, a driver board, an operator panel and an electro-photographic process mechanism. The control board receives data through a host I/F, decodes and edits the data, and stores the edited data in a memory.
Page 19: Main Control Board (Aolm-Pcb)
Page: 9 Service Guide OL1200 Chapter 2 Operation Description 2.1 Main Control Board (AOLM-PCB) The control board consists of a one chip CPU, LSIs, a program/font ROM, a DRAM, an EEPROM, a host interface circuit, and a mechanism driving circuit.
Page 20 System area Working area used for the Fixed Fixed program Working area used for the program Raster buffer Stores converted bit image data Enable Expandable Receive buffer Stores temporarily the data Enable Expandable received from the host interface Page buffer Adds print information to the Expandable analyzed receive data and stores...
Page 21 - Pin layout - Basic specification - Type: 72 pins SIIM (32 bits buss width) - Access time: 60ns, 70ns, 80ns, 100ns - Capacity: 1, 2, 4, 8, or 16MB (16 MB RAM will not be sold by Okidata) - Parity: None...
Page 23: Power/Sensor Board
Page: 10 Service Guide OL1200 Chapter 2 Operation Description 2.2 Power/Sensor Board The power/sensor board consists of an AC filter circuit, a low voltage power supply circuit, a high voltage power supply circuit, heater drive circuit, and photosensors. (1) Low voltage power supply circuit This circuit generates the following voltages.
Page 24 The photosensor mounted on this power/sensor board supervises the paper running state during printing. Figure 2-3 shows the sensor layout diagram. Sensor Function Sensing state Inlet sensor 1 Detects the leading part of ON: Paper exists. the paper and gives the OFF: No paper exists.
Page 25 Detects the lack of toner. ON long: Toner low exists OFF short: No Toner low exists Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 26: Relay/Driver Board (Aolc Board)
This board relays signals between the Control board and the Power/Sensor board and includes the registration motor and drum motor driver IC. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 27 Page: 12 Service Guide OL1200 Chapter 2 Operation Description 2.4 Electro-photographic Process 2.4.1 Electro-photographic process mechanism This mechanism prints image data from the control board on the paper by electro-photographic process. The Figure 2-4 shows the layout of the electro-photographic process mechanism.
Page 28 AC voltage supply forcibly. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 29: Charging
Page: 13 Service Guide OL1200 Chapter 2 Operation Description 2.4.2 Electro-photographic process The electro-photographic processing is outlined below. Figure 2-5 shows the electro-photographic printing process. 1 Charging The surface of the image drum is uniformly charged with negative charges by applying a negative voltage to the charge roller.
Page 30: Fusing
The toner image transferred to the paper is fused under heat and pressure. Figure 2-6 shows an electro-photographic process timing chart. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 31: Process Operation Descriptions
Page: 14 Service Guide OL1200 Chapter 2 Operation Description 2.4.3 Process operation descriptions (1) Hopping Hopping from the first tray and the front feeder are effected by a single hopping motor in the mechanism shown below. Turning the Hopping motor in the a direction drives the hopping roller of the first tray. Turning the Hopping motor in the b direction drives the Hopping roller of the front feeder.
Page 32 registration roller. (The skew of the paper can thus be corrected.) (b) Hopping (front feeder) 1 Rotating the pulse motor in the direction b (Counter Clock-wise direction) drives the hopping roller of the front feeder to advance the paper until the inlet sensor turns on. At the same time, the one-way clutch gear A also rotates.
Page 33 2 After turning on the inlet sensor, the paper advances further by a predetermined length until it hits the registration roller. (The skew of the paper can thus be corrected.) Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 34: Feeding
When leading edge of the paper causes the paper sensor to turn on, the printing is started synchronously. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 35 Charging is effected by applying a DC minus voltage to the charge roller that is in contact with the image drum surface. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 37 3. Toner is attracted to the exposed part (low-potential part) of the image drum at the contact between the image drum and the developing roller, making the electrostatic latent image visible. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 39 The back-up roller is held under a pressure of 2.5 kg from the pressure spring at each side. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 40: Cleaning
After the end of the transfer, residual toner on the image drum is attracted to the cleaning roller temporarily by static electricity to clean the image drum surface. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 41: Cleaning Of Rollers
Changes in bias voltage applied to each roller move adhesive toner from the roller to the image drum and return it to the developer. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 42: Paper Jam Detection
Page: 23 Service Guide OL1200 Chapter 2 Operation Description 2.5 Paper Jam Detection The paper jam detection function supervises the paper state at power-on time and during printing. In the event that a jam occurs, this function interrupts the printing process. If any of the following errors is presented, recovery printing will be performed by removing the jammed paper ( by opening the upper cover, removing the jammed paper and closing the upper cover).
Page 43 - The paper size check with the manual feed specified considers the reference size as free size. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 44: Cover Open
At the same time, the CVOPN signal is sent to the control board to notify it of the off state of the microswitch, and the control board performs the cover open processing. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 45: Toner Low Detection
Page: 25 Service Guide OL1200 Chapter 2 Operation Description 2.7 Toner Low Detection - Composition The device consists of the stirring gear which rotates at a constant rate, the stirring bar and the magnet on the stirring bar. The stirring bar rotates through the link on the protrusion in the stirring gear.
Page 46 Alarm is activated. - The toner sensor is not monitored while the drum motor is in halt. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 47: Stacker-Full Detection
The sensor lever at the paper outlet to the stacker detects a stacker-full state (about 250 sheets) and stops printing of the ensuing pages. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 48: Page Size Detection
State of Microswitches Paper size Letter Executive Legal 14 Legal 13 Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 49: Parts Replacement
The section explains the procedures for replacement of parts, assemblies, and units in the field. Only the removal procedures are explained here. Reverse the procedure for the installation. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 50: Precautions For Parts Replacement
(8) Do not place printed circuit boards directly on the equipment or floor. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 51: [Service Tools]
Table 3-1 shows the tools required for field replacement of printed circuit boards and units. Table 3-1 Service Tools Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 52: Parts Layout
Page: 31 Service Guide OL1200 Chapter 3 Parts Replacement 3.2 Parts Layout 1 - 4 Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 53: Parts Layout 2 - 4
Page: 32 Service Guide OL1200 Chapter 3 Parts Replacement Parts Layout 2 - 4 Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 54: Parts Layout
Page: 33 Service Guide OL1200 Chapter 3 Parts Replacement Parts Layout 3 - 4 Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 55: Parts Layout
Page: 34 Service Guide OL1200 Chapter 3 Parts Replacement Parts Layout 4 - 4 Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 56: How To Change Parts
This section explains how to change parts and assemblies appearing in the disassembly diagram below. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 57: Rear Cover, Side Cover (L) Assy, Face-Up Stacker
Page: 36 Service Guide OL1200 Chapter 3 Parts Replacement 3.3.1 Rear cover, side cover (L) Assy, face-up stacker Assy, and I/F cover Assy. (1) Turn the AC power switch off. Unplug the AC power cord from the outlet. (2) Remove the interface cable 1. Remove drum/toner Assy 2A and store in black plastic bag shipped w/printer.
Page 59: Contact Assy
Caution: Be careful not to deform the electrodes of the contact Assy when removing the contact Assy. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 60: Dc Fan Motor
(3) Unplug the connector of the DC fan motor 1 and remove the DC fan motor 1. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 61: Manual Feed Hopper Assy
(3) Hold manual feed hopper Assy 1 vertically and remove the left and right levers 2 with a downward motion. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 62: Side Cover (R) (Operator Panel Assy)
(4) Remove two screws 5 and flexible cable 6 (use care to not damage flexible cable). Remove operator panel Assy 7. (5) Open manual feed hopper Assy 8. Remove three screws 9 and then remove side cover (R) 10. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business...
Page 63 Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 64: Earth Plate Bk (R) (Aolm-Pcb, Ic Cover)
(5) Remove four screws 6. Remove side plate (R) 7, by pulling up and out on top part of plate. (6) Remove the claws and then remove FG plate BK (R) 8. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business...
Page 65 Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 66: Stacker Cover Assy, Damper Arm, And Washer
Page: 42 Service Guide OL1200 Chapter 3 Parts Replacement 3.3.7 Stacker cover Assy, damper arm, and washer (1) Turn the AC power switch off. Unplug the AC power cord from the outlet. Remove the rear cover (see 3.3.1). Remove the side cover (R) (see 3.3.5).
Page 68: Damper
Remove the damper arm (see 3.3.7). (3) Remove two screws 1 and then remove two dampers 2. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 69: Stacker Full Sensor Assy
(4) Remove stacker full sensor Assy 3 by spreading the plastic tabs on each side of sensor Assy 3 and lifting switch from cover. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 70: Cable Cover (Cable Guides A And B)
(3) Remove two screws 1 release tabs at position 1A . Remove cable cover 2, cable guide A 3. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 71: Eject Roller Assy
(6) Release the latch on the right side of eject roller Assy 1. Lift up and remove the eject roller Assy. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 72: Paper Supply Guide D
Page: 47 Service Guide OL1200 Chapter 3 Parts Replacement 3.3.12 Paper supply guide D (1) Turn the AC power switch off. Unplug the AC power cord from the outlet. Remove the side cover (R) (see 3.3.5). (3) Remove four screws 1. Lift up and remove front feeder roller Assy 2.
Page 74: Separator F
Page: 48 Service Guide OL1200 Chapter 3 Parts Replacement 3.3.13 Separator F (1) Turn the AC power switch off. Unplug the AC power cord from the outlet. Remove the manual feed hopper Assy (see 3.3.4). Remove the side cover (R) (see 3.3.5).
Page 76: Front Feeder Roller Assy
Page: 49 Service Guide OL1200 Chapter 3 Parts Replacement 3.3.14 Front feeder roller Assy (1) Turn the AC power supply switch off. Unplug the AC power cord from the outlet. Remove the manual feed hopper Assy (see 3.3.4). Remove the side cover (R) (see 3.3.5).
Page 77 3: Be sure that during re-assembly both feeder cams (2 and D) are facing the same direction. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 78: Hopping Motor
Page: 50 Service Guide OL1200 Chapter 3 Parts Replacement 3.3.15 Hopping motor (1) Turn the AC power switch off. Unplug the AC power cable from the outlet. Remove the manual feed hopper Assy (see 3.3.4). Remove the side cover (R) (see 3.3.5).
Page 80: Front Feeder Paper End Sensor
Page: 51 Service Guide OL1200 Chapter 3 Parts Replacement 3.3.16 Front feeder paper end sensor (1) Turn the AC power switch off. Unplug the AC power cord from the outlet. Remove the manual feed hopper Assy (see 3.3.4). Remove the side cover (R) (see 3.3.5).
Page 82: Main Chassis Unit
Page: 52 Service Guide OL1200 Chapter 3 Parts Replacement 3.3.17 Main chassis unit (1) Turn the AC power switch off. Unplug the AC power cord from the outlet. Remove the rear cover (see 3.3.1). Remove the contact Assy (see 3.3.2).
Page 84: Registration Roller
Page: 53 Service Guide OL1200 Chapter 3 Parts Replacement 3.3.18 Registration roller (1) Turn the AC power switch off. Unplug the AC power cord from the outlet. Remove the front feeder roller Assy (see 3.3.12. (1) to (3)). (3) Remove four screws 1. Lift and remove the registration roller Assy 2, left side first then right side.
Page 86: Drum Motor
Page: 54 Service Guide OL1200 Chapter 3 Parts Replacement 3.3.19 Drum motor (1) Turn the AC power switch off. Unplug the AC power cord from the outlet. Remove the main chassis unit (see 3.3.17). Remove the registration roller Assy (see 3.3.18 (1) to (3)).
Page 88: Idle Gear
(5) Remove idler gear E (3), idle gear D (4), idle gear B (5), idle gear C (6), idle gear A (7), and two resist idle gears 8. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 89: Fusing Assy
Page: 56 Service Guide OL1200 Chapter 3 Parts Replacement 3.3.21 Fusing Assy (1) Turn the AC power switch off. Unplug the AC power cord from the outlet. Remove the side cover (L) Assy (see 3.3.1 (1) to (3)). (3) Unplug connector 1.
Page 91: Fuser Pressure Roller
Page: 57 Service Guide OL1200 Chapter 3 Parts Replacement 3.3.22 Fuser Pressure Roller (1) Turn the AC power switch off. Unplug the AC power cord from the outlet. Remove the main chassis unit (see 3.3.17). Remove the fusing Assy (see 3.3.21).
Page 93: Ep Lock Shaft
(5) Drop EP lock shaft 4 down and turn in the direction of arrows B and remove it. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 94: Hopping Roller Assy
(6) Release the latch and remove hopping roller Assy 5. (At this time, knock pin 7 is also removed. Be careful not to lose the knock pin.) Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business...
Page 95 Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 96: Outlet Sensor Lever
(3) Press the clamp part of outlet sensor lever 1. Remove the outlet sensor lever 1 by pushing it upward from the lower side. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 97: Toner Sensor Lever
(3) Squeeze the clamp part of toner sensor lever 1 and remove the toner sensor lever 1 by pushing it upward from the lower side. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 98: Paper Sensor Lever
(3) Squeeze the clamp part of the paper sensor lever 1. Remove the paper sensor lever 1 by pushing it upward from the lower side. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 99: Inlet Sensor Lever
(3) Squeeze the clamp part of two inlet sensor levers 1. Remove the inlet sensor levers 1 by pushing them downward. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 100: Insulator
Page: 64 Service Guide OL1200 Chapter 3 Parts Replacement 3.3.29 Insulator (1) Turn the AC power switch off. Unplug the AC power cord from the outlet. Remove the main chassis unit (see 3.3.17). (3) Remove two screws 1 and then remove inlet holder 2. At this time, remove inlet 3 from inlet holder 2.
Page 102: Paper End Lever
Remove the main chassis unit (see 3.3.17). (3) Release the lock and remove paper end lever 1. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 103: Guide Rail (L) Assy
Page: 66 Service Guide OL1200 Chapter 3 Parts Replacement 3.3.31 Guide rail (L) Assy (1) Turn the AC power switch off. Unplug the AC power cord from the outlet. Remove the main chassis unit (see 3.3.17). Remove the insulator (see 3.3.29).
Page 106: Guide Rail (R) Assy
Page: 67 Service Guide OL1200 Chapter 3 Parts Replacement 3.3.32 Guide rail (R) Assy (1) Turn the AC power switch off. Unplug the AC power cord from the outlet. Remove the main chassis unit (see 3.3.17). Remove the insulator (see 3.3.29).
Page 108: Ic Card Cover
(3) Open stacker cover 2. Remove two screws 3 and then remove IC card cover 4. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 109: Led Head
(Take care not to lose head springs.) (5) Pull out the head spring 5 from the post. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 110: Separator Assy
(3) Release two locks and remove separator Assy 2. (At this time, leaf spring 3 and coil spring 4 are also removed. Be careful not to lose these springs.) Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 111: Transfer Roller
(TR) 4 and two transfer roller springs 5 are also removed.) (4) Remove diselectrification bar 6 and diselectrification film 7 from the chassis unit. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 112: Adjustment
This printer has three kinds of maintenance mode. You will utilize one of the maintenance modes when replacing key parts. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 113: Maintenance Modes And Functions
- Selection of envelope feeder download table - Fuser count indication - Fuser count reset - Engine reset Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 114 - This function is capable to adjust the printing start position within the range of ±2 mm in 0.25 mm steps in the Y direction. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 115: User Maintenance Mode Menu System
Page: 75 Service Guide OL1200 Chapter 4 Adjustment User maintenance mode menu system Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 116: System Maintenance Mode
Page: 76 Service Guide OL1200 Chapter 4 Adjustment 4.1.2 System maintenance mode - The system maintenance mode is set when the power is turned ON while pressing the Recover key. - This mode adopts the menu for function selection. - The system maintenance mode is provided with the following functions: (1) Page count display - The total number of pages counted at the engine is displayed on the LCD.
Page 118: System Maintenance Mode Menu System
Page: 77 Service Guide OL1200 Chapter 4 Adjustment System maintenance mode menu system Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 119: Engine Maintenance Mode
Page: 78 Service Guide OL1200 Chapter 4 Adjustment 4.1.3 Engine maintenance mode - The engine maintenance mode is activated when the power is turned ON while pressing to the Form Feed key and Enter key. - This mode adopts the menu for function selection.
Page 120 Note: Do not change the default value of (2), (5) & (9) they are the parameters for adjusting in the factory. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 121: Engine Maintenance Mode Menu System
Page: 79 Service Guide OL1200 Chapter 4 Adjustment Engine maintenance mode menu system...
Page 123: Eeprom Initialization
The corresponding area of the EEPROM is initialized for each event as shown Table 4-1. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 124: Adjustment When Replacing A Part
(Refer to Chapter 4.2.2) EEPROM Set the LED head drive time. (Refer to Chapter 4.2.1) Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 125: Setting Of Led Head Drive Time
Page: 82 Service Guide OL1200 Chapter 4 Adjustment 4.2.1 Setting of LED head drive time Note: When the luminous intensity marking of the replaced LED head (new part) is same as that of the used LED head (old part), do not set the LED head drive time.
Page 126 Luminous intensity Drive time display on LED parameter head 0.27 ~ 0.28 0.29 ~ 0.30 0.31 ~ 0.32 0.33 ~ 0.35 0.36 ~ 0.37 0.38 ~ 0.40 0.41 ~ 0.43 0.44 ~ 0.46 0.47 ~ 0.49 0.50 ~ 0.52 0.53 ~ 0.57 0.58 ~ 0.60 0.61 ~ 0.64 0.65 ~ 0.69...
Page 128: Resetting The Fuser Counter
(1) The fuser counter can be reset in the engine maintenance mode. (2) Resetting method Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 129: Destination Setting
MENU, < Non-Europe 1 MENU, PAPER SIZE (Australia, etc.) Non-Europe 2 MENU, TRAY TYPE (Singapore, etc.) Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 130: Periodic Maintenance
Remarks replacement Toner cartridge 5,000 LED head. Consumables Image drum 30,000 LED head. Consumables cartridge Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 131: Cleaning
Note: Do not touch image drum, LED lens array, and LED head connector block. Do not use any solvents. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 132: Cleaning Of Led Lens Array
Note: Gently press the LED head cleaner onto the LED lens array. (2) Throw the cleaner pad away. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 133: Cleaning Page Function
While this process is going on, the LCD displays "CLEANING PRINT" message. (5) The printer returns to off-line mode. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 134: Lubrication - General Information
Hopping Roller Assy. (Bearings and Gear) 3.3.24 Page 3-34 Bearings and shaft of the Transfer Roller 3.3.36 Page 3-49 Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 135: Troubleshooting Procedures
(2) Gather as much information on the problem from the customer as possible. (3) Perform inspections in conditions close to those in which the problem had occurred. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 136: Points To Check Before Correcting Image Problems
(3) Is the paper normal? See paper specifications section. (4) Has the image drum cartridge been loaded properly? Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 137: Tips For Correcting Image Problems
(4) Do not expose the image drum to light for longer than 5 minutes at room temperature. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 138: Preparation For Troubleshooting
The failure status of this printer is displayed on the liquid crystal display (LCD) in the operator panel. Take proper corrective action as directed by messages that are displayed on the LCD. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 139: Troubleshooting Flow
6.5 Troubleshooting Flow If troubles should develop in this printer, troubleshoot in the following procedure flow: Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 140: Lcd Status Message/Trouble List
Table 6-1 lists the status and troubles that may be indicated by messages on the LCD. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 141: Lcd Status Messages: (1-4) General
Page: 96 Service Guide OL1200 Chapter 6 Troubleshooting Procedures LCD Status Messages: (1-4) General Categor LCD Status Message Trouble or Status Remedy Daily The printer is in the on-line mode. Normal status operation xxx: Emulation in use (HP4, PS, HxD, AUT)
Page 142 Daily Toner is running out Replace the status This message is displayed in toner combination with other message cartridge. indicated in the first line. Normal operation such as stop/continuation of printing can be continued. If LOW TONER = OFF is selected in the menu, the LED ATTENTION flashes.
Page 143 Daily The drum is running down. Replace the status This message is displayed in image drum combination with other message cartridge. indicated on the first line. Normal operation can be continued. Note: After replacing the drum cartridge, reset the drum counter.
Page 144 Form Feed button. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 145: Lcd Status Messages: (2-4) General
Page: 97 Service Guide OL1200 Chapter 6 Troubleshooting Procedures LCD Status Messages: (2-4) General Categor LCD Status Message Trouble of Status Remedy Paper Loading of paper indicated by - Load the requested request the first line message is paper in the tray.
Page 146 Interface An error occurred in the - Press the RECOVER error serial I/F. key on the operator panel This message is displayed to release the error when a parity error, a framing display. error or an overrun error is - Check the settings of detected.
Page 147 - Replace the card. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 148 Page: 98 Service Guide OL1200 Chapter 6 Troubleshooting Procedures LCD Status Messages:3-5 A fault occurred in the printer. Turn the power off, then on to release the error display. If the error display cannot be released by this procedure, call a service person.
Page 149 A fault occurred in the fan motor. Connect the fan motor cable properly. Replace the fan motor. Replace the Power Supply board. A fault occurred in the fuser. See chapter 6.5.2. Thermistor open error See chapter 6.5.2. Thermistor short error See chapter 6.5.2.
Page 150 Replace the Control board. IPT2 program error Turn the power off, then on. Replace the Main board (AOLM-PCB). Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 151 Note: When replacing the Control board, install the EEPROM mounted on the replaced Control board. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 152: Lcd Message Troubleshooting
Page: 100 Service Guide OL1200 Chapter 6 Troubleshooting Procedures 6.5.2 LCD message troubleshooting If problems are not correctable from the LCD message trouble list, follow the troubleshooting flowcharts given here to deal with them. Trouble Flowchart number The printer does not work...
Page 153 Note: When replacing the Control board, install the EEPROM from the old Control board, onto the new control board. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 154 Page: 101 Service Guide OL1200 Chapter 6 Troubleshooting Procedures The printer does not work normally after being turned on. message shown in the LCD display (for less than 1 second)? Is the AC cable connected properly? Connect the cable properly.
Page 155 Replace the Main board YES END. Is the operator panel connected to the Control board properly? Connect the operator panel properly. Is the connecting cord defective? Replace the connecting cord. Replace the operator panel assembly. Is the printer recovered? Replace the Control board. YES END.
Page 156 Fig. 6-1 Connector and Pin Location Fig. 6-2 Measurement by a Multimeter...
Page 157 Fig. 6-3 Connector and Pin Location Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 158 Page: 102 Service Guide OL1200 Chapter 6 Troubleshooting Procedures [JAM error] Paper input jam (1st tray) Does a jam error occur when the power is turned on? Is the paper at the inlet sensor lever? Remove the paper. Does the inlet sensor lever operate smoothly?
Page 159 Replace the hopping motor. Replace the Control board. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 160: Paper Input Jam (Front Feeder)
Replace the front feeder paper sensor assembly. No Is the hopping roller rotating? Set the paper properly. Is the hopping motor rotating? Replace the front feeder gear or idle gear. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business...
Page 161 Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 162: Paper Feed Jam
Page: 104 Service Guide OL1200 Chapter 6 Troubleshooting Procedures Paper feed jam Does a paper feed jam occur when the power is turned on? Is the paper on the paper sensor lever? Remove the paper. Does the paper sensor lever operate smoothly? Replace the paper sensor lever.
Page 163 Go to on the next flow . Go to on the next flow. From on the preceding page . From on the preceding page . Is the image drum set properly? Set the image drum properly. In case of paper feed from the front feeder, check the hopping roller of the front feeder assembly.
Page 164 (See Fig. 2-3 Sensor Layout Diagram.) Is the printer recovered? Replace the Power/sensor board. END. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 165: Paper Exit Jam
Is the eject roller assembly installed properly? Install the eject roller assembly properly. Replace the eject roller assembly. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 166: Paper Size Error
Page: 106 Service Guide OL1200 Chapter 6 Troubleshooting Procedures Paper size error Is paper of the specified size used? Use paper of the specified size. Do the inlet sensor lever and paper width sensor lever operate smoothly? Replace the inlet sensor lever or paper width sensor lever.
Page 168: Fuser Unit Error (Error 71), (Error 72)
Page: 107 Service Guide OL1200 Chapter 6 Troubleshooting Procedures Fuser unit error (ERROR 71), (ERROR 72), (ERROR 73) Turn the power OFF/ON. Does a fuser unit error occur immediately? Is the thermistor open or shorted? Measure the resistance between thermistor contacts.
Page 169 (In normal state, this pin is set to 0 V). Replace the Control board. Replace the Power/sensor board. Go to B. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 170: Synchronous Serial I/O Error (Error 74) Or I/F Time-Out
YES END. Replace the Control board. Is the printer recovered? Replace the Power/sensor board. END. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 171: I/F Time-Out Occurs Between The Printer And The Operator
Replace the connecting cord. Replace the operator panel assembly. Is the printer recovered? Replace the Control board. END. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 172: Communications With The Host Cannot Be Performed Via
Replace the Control board or ask the user to check the hardware and software at the host side. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 173: Data From The Host Not Received Via The Serial Interface
Page: 111 Service Guide OL1200 Chapter 6 Troubleshooting Procedures 8. Data from the host not received via the serial interface. Is message displayed? Select the auto interface or RS232C for the host interface in menu level 1. Do the following items selected for RS232C SERIAL in menu level 2 coincide with...
Page 175: Data Cannot Be Received Through The Oki Hsp Interface
A trouble may exist in the interface board (option), interface cable or host side. Ask the user to check these items. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 176: Image Troubleshooting
Page: 113 Service Guide OL1200 Chapter 6 Troubleshooting Procedures 6.5.3 Image troubleshooting Procedures for troubleshooting if abnormal images have been printed out are explained below. Figure 6-3 below shows typical abnormal images. Trouble Flowchart number Images are light or blurred as a whole (Figure 6-4, )
Page 178: Images Are Light Or Blurred A Whole
Page: 114 Service Guide OL1200 Chapter 6 Troubleshooting Procedures 1. Image are light or blurred a whole. Is toner low? (Is the TONER LOW message displayed?) Supply toner. Is paper of the specified grade used? Use paper of the specified grade.
Page 179 Replace the control board or Power/Sensor board. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 180: Dark Background Density
Page: 115 Service Guide OL1200 Chapter 6 Troubleshooting Procedures Dark background density Has the image drum been exposed to external light? Mount the image drum in the printer and wait for about 30 minutes. Is the heat roller of the fusing unit dirty? Clean the heat roller.
Page 181 ENTER keys. Set the LED head drive time. (Refer to Section 4.2.) Replace the control board or Power/Sensor board. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 182: Black Belts Or Stripes In The Vertical Direction
ENTER keys. Set the LED head drive time. (Refer to Section 4.2.) Replace the control board or power/sensor board. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 183: Cyclic Error
FORM FEED and ENTER keys, and reset the fuser counter. (Refer to See 4.1.) Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 184: Print Voids
Page: 118 Service Guide OL1200 Chapter 6 Troubleshooting Procedures 6. Print voids Is the contact plate of the transfer roller contacted with the power/sensor board properly? (See Figure 6-5.) Adjust the contact plate contact to contact the power/sensor board properly and the shaft of the transfer roller.
Page 186: Poor Fusing
Replace the fusing unit assy. Has the trouble been removed? Replace the control board or power/sensor board. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 187: White Belts Or Streaks In The Vertical Direction
Page: 120 Service Guide OL1200 Chapter 6 Troubleshooting Procedures White belts or streaks in the vertical direction Are the LED lens dirty? Clean the LED lens. Is the contact plate of the transfer roller contacted with the power/sensor board properly? (See Figure 6-6.)
Page 190: Wiring Diagram
Page: 121 Service Guide OL1200 Chapter 7 Wiring Diagram 7. WIRING DIAGRAM 7.1 Interconnect Signal Diagram...
Page 192: Pcb Layout
Page: 122 Service Guide OL1200 Chapter 7 Wiring Diagram 7.2 PCB Layout (1) Control board (AOLM)
Page 194: Resistance Check
Page: 123 Service Guide OL1200 Chapter 7 Wiring Diagram 7.3 Resistance Check...
Page 196: Short Plug Setting
Page: 124 Service Guide OL1200 Chapter 7 Wiring Diagram 7.4 Short Plug Setting (1) Control board (AOLM) Short plug Plug setting Description Factory setting +5 V is supplied to pin 18 of Centronics parallel I/F connector. +5 V is not supplied...
Page 197 CE signals of ROM 05D and 07C are effective. CE signals of ROM 05D and 07C are ineffective. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 198: Parts List
Page: 125 Service Guide OL1200 Chapter 8 Parts List 8. PARTS LIST Figure 8-1 Printer Unit...
Page 199 Name/Rating OKI-J Part Remarks Side cover (L) 3PP4128-1 53073501 Assy 118G1 Side cover (R) 1PP4128-1 53073601 065P1 IC cover 2PP4128-1 53073701 114P1 I/F cover assy 2PA4128-1 53073801 066G1 Rear cover 1PP4128-1 53073901 069P1 Operator panel 2YX4128-1 50108101 assy (ODA) 070G1 Flexible cable 238A1071P 56627901...
Page 200 3PP4083-5 53345601 frame assy 663G1 FG plate BK 4PP4076-5 53346401 067P1 AOLM-PCB 4YA4046-1 55077311 634G11 Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 201: Main Chassis Unit
Page: 126 Service Guide OL1200 Chapter 8 Parts List Main Chassis Unit Name / Rating Parts No. Q'ty Remarks Main chassis assy 2PP4076-5751G 50107901 Spring [EP lock 4LB-192600-6 50928306 lever (L) assy] Stacker cover 4PB4083-6197P 51229401 damper Idle gear (exit)
Page 202 Bearing L (Hopping 4PP4076-5345P 51608101 roller assy) Bearing R 4PP4076-5308P 51608201 (Hopping roller assy) Hopping roller gear 4PB4076-5327P 51235501 (One way) Idle gear A 4PP4076-5061P 51233701 Idle gear B 4PP4076-5062P 51233801 Idle gear C 4PP4076-5063P 51233901 Idle gear D 4PP4076-5064P 51234001 Idle gear E 4PP4076-5065P...
Page 203 Toner sensor lever 4PP4076-5086G Exit sensor lever 3PP4076-5085P 50807701 Square-shaped 220A1866P0220 22P fixed side connector 56730620 Paper supply guide 3PA4076-5759G 51015901 D (A4) assy Registration 4PA4076-5756G 51608501 bearing assy Pressure roller 3PP4076-5032P 50408101 Registration roller 3PB4076-5030P 80408201 Registration gear 4PP4043-4529P 51234401 Pressure roller 4PP4043-4530P...
Page 204 4PA4076-5333G Motor assy 3YX4076-5070G Front feeder unit 1YX4076-5300G Stacker cover 4PB4076-5015P damper Anti-static film 3PB4083-6089P Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 205: Front Feeder Unit
Page: 127 Service Guide OL1200 Chapter 8 Parts List Front Feeder Unit...
Page 206 Name / Rating Parts No. Q'ty Remarks Paper supply guide 3PP4076-5348G 51016101 A (Affix) Paper supply guide 1PP4076-5303P 51016201 Paper supply guide 1PP4076-5304P 51016301 FF roller assy 4PA4076-5757G 50408501 FF plate (Affix) 4PP4076-5310G 51016601 FF cam 4PP4076-5313P 51235601 Front feeder gear 4PB4076-5314P 51234701 4YB4076-5316P...
Page 207 Bearing F 4PP4076-5308P 51608201 Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 208: Base Unit
Page: 128 Service Guide OL1200 Chapter 8 Parts List Base Unit Name / Rating Parts No. Q'ty Remarks...
Page 209 Guide rail (L) Assy 2PP4076-5753G 51016701 Pull block 4PP4122-1217P 51500301 Link support 4PP4076-5358P 50516801 Cassette lock 4PP4076-5417P 50927302 spring Cassette stopper 4PP4076-5359P 50607201 Pressure coil 4PP4043-4526P 50928801 spring Guide rail (R) assy 2PP4076-5754G 51016801 AOLS-PCB 4YA4046-1621G 55077101 Square shaped Square shaped 56730640 connector connector...
Page 210 Guide rail assy (L) 1PA4076-5410G Guide rail assy (R) 1PA4076-5420G Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 211: Rs-232 Serial Interface
Page: 129 Service Guide OL1200 Chapter A RS-232 Serial Interface Appendix A RS-232C SERIAL INTERFACE 1) Connector - Printer side : 25-pin receptacle (Female) Type DB-25S or equivalent - Cable side : 25-pin plug (Male) Type DB-25P or equivalent Note: Plug shall be able to be fixed with a lock screw.
Page 212 DTR (pin 20) fixed, High Ready/Low Ready selectable Minimum busy time 200 msec, 1 sec Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 213: B Centronics Parallel Interface
Page: 130 Service Guide OL1200 Chapter B Centronics Parallel Interface Appendix B CENTRONICS PARALLEL INTERFACE 1) Connector - Printer side : 36-pin receptacle (Female) Type 57-40360-12-D56 (made by Daiichi Denshi) or equivalent - Cable side : 36-pin plug (Male) Type 57-30360 (made by Daiichi Denshi) or equivalent Plug-552274-1...
Page 214 4) Signal level - LOW : 0 V to +0.8 V - HIGH : +2.4 V to +5.0 V 5) Specifications Item Description Mode Compatibility mode, Nibble mode, ECP mode Data bit length 8 bits: Compatibility mode, 4 bits: Nibble mode, 9 bits: ECP mode Input prime Valid/Invalid Receive buffer 8K, 20K, 50K, 100K, 1M Bytes...
Page 215 Busy control is performed. Signal lead control is performed. 6) Timing charts Data receiving timing Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 216: General Mechanism
I so that the rotation of pulley I is not transmitted to roller A, preventing any feeding of papers by roller A. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 217 - Special Size: Paper Width: 148 to 216mm Paper length: 210 to 356mm [Weight] - 64 x 81 g/m 2 Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 218: External View And Component Names
Service Guide OL1200 Chapter C High Capacity Second Paper Feeder 1.2 External View and Component Names Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 219: Mechanism Description
Once the delivered into the printer, the paper is then controlled and fed through by registration motor of the printer. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 220: Hopper Mechanism
Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 221: Parts Replacement
(8) Do not place the printed circuit boards directly on the equipment or floor. NOTE: Always practice good anti-static precautions. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 222: Parts Layout
Page: 137 Service Guide OL1200 Chapter C High Capacity Second Paper Feeder 3.2 Parts Layout This section describes the layout of the main components.
Page 224: Parts Replacement Methods
This section describes the parts replacement methods for the components listed in the disassembly order diagram below. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 225: Idle Rollers
(1) Remove two screws 1 and remove the front panel assy 2 . (2) Remove two idle rollers 3 . Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 226: Aolt-Pcb
(1) Remove the screw 1 and remove the PCB cover 2 . (2) Remove three connectors 3 and two screws 4 , then remove the AOLT-PCB 5 . Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 227: Hopping Motor
Page: 141 Service Guide OL1200 Chapter C High Capacity Second Paper Feeder 3.3.3 Hopping motor (1) Remove the front panel assy (see 3.3.1 step1). (2) Remove the PCB cover (see 3.2.2 step1). (3) Remove two connectors 1 and two screws 2 , then remove the hopping motor assy 3 . The three gears 4 , the connecting lever 5 , as well as the wave washer 6 all come off at the same time, so be careful not to lose them.
Page 229: Feed Roller
(5) Remove the latch on the feed roller bearing 2 and remove the feed roller bearing 2. (6) Shift the feed roller 3 to the right side and lift it out, holding it on the left side. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business...
Page 230 Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 231: Hopping Roller Rubber
(4) Remove the hopping roller 4 and remove the hopping roller rubber 5 from it. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 232: Side Frame (L) Assy
Page: 144 Service Guide OL1200 Chapter C High Capacity Second Paper Feeder 3.3.6 Side frame (L) assy (1) Remove the hopping roller (see 3.3.5). (2) Remove three screws 1 and remove the upper plate 2. (3) Remove two screws 3 and remove the side frame (L) assy 4.
Page 234: Side Frame (R) Assy
Page: 145 Service Guide OL1200 Chapter C High Capacity Second Paper Feeder 3.3.7 Side frame (R) assy Remove the hopping roller (see 3.3.5). (2) Remove three screws 1 and remove the upper plate 2. (3) Remove two screws 3 and remove the side frame (R) assy 4.
Page 236: Troubleshooting
Display) on the Operator panel. Go through the appropriate troubleshooting procedures according to the messages displayed on the LCD. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 237: Troubleshooting Method
Troubleshooting Method When a problem occurs, go through the troubleshooting according to the following procedure. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 238: Lcd Status Message List
Page: 148 Service Guide OL1200 Chapter C High Capacity Second Paper Feeder 4.3.1 LCD Status Message List The listing of the statuses and problems displayed in the form of messages on the LCD is provided in Table 4-1. Classification LCD Status...
Page 239 High Capacity Replace the Second Paper square-shaped connector if Feeder. necessary. Replace AOLT-PCB. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 240: Troubleshooting Flow
Page: 149 Service Guide OL1200 Chapter C High Capacity Second Paper Feeder 4.3.2 Troubleshooting Flow ( JAM error ) Paper Input Jam Does paper jam at the inlet when the power is turned on? Is the paper located above the sensor plate (Inlet)? Remove the paper.
Page 241 Replace the stepping motor. Replace the AOLT-PCB. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 242: Connection Diagram
Page: 150 Service Guide OL1200 Chapter C High Capacity Second Paper Feeder CONNECTION DIAGRAM Interconnection Diagram Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 243: Pcb Layout
Page: 151 Service Guide OL1200 Chapter C High Capacity Second Paper Feeder PCB Layout AOLT-PCB Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 244: Parts List
Page: 152 Service Guide OL1200 Chapter C High Capacity Second Paper Feeder PARTS LIST Table 6-1 High Capacity Second Paper Feeder Description Part No. Remarks...
Page 245 Shaft earth plate 4PP4076-5719P1 53346801 Paper cassette assy 1PA4076-5430G1 50108001 Separator frame assy 3PP4083-5663G1 53345601 Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 246: D Power Envelope Feeder
The main functions are the followings: Paper that can be used: Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 247: External View And Component Names
Page: 154 Service Guide OL1200 Chapter D Power Envelope Feeder External View and Component Names Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 248: General Mechanism
I so that the rotation of pulley I is not transmitted to roller A, preventing any feeding of papers by roller A. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 249: Hopper Mechanism
The hopper automatically feeds the printer with the paper being set, single sheet at a time. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 250: Parts Replacement
(8) Do not place the printed circuit boards directly on the equipment or floor. NOTE: Always practice good antistatic procedures. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 251: Parts Layout
Chapter D Power Envelope Feeder Parts Layout This section describes the layout of the main components. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 252: Parts Replacement Methods
Planet gear (3.3.5) Roller B (3.3.6) Roller A (3.3.7) Mini pitch belt & Feed roller (3.3.8) Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 253: Separator
Page: 160 Service Guide OL1200 Chapter D Power Envelope Feeder 3.3.1 Separator (1) Turn the printer power off and remove the Power Envelope Feeder. (2) Disengage the link and hopper cover. (3) Remove two screws 1, disengage two locks of the upper cover 2 using a flat-head screwdriver, and remove the upper cover 2.
Page 255: Aole-Pcb
(4) Remove the connector 4. Caution: Be careful to set the sensor plate properly when mounting the AOLE-PCB Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 256: Square-Shaped Connector
Page: 162 Service Guide OL1200 Chapter D Power Envelope Feeder 3.3.3 Square-shaped connector (1) Remove the upper cover and remove the cover frame 5 (see 3.3.1 (1) to (4)) in Chapter 3. (2) Remove the AOLE-PCB (see 3.3.2). (3) Remove the screw 1 and remove the square-shaped connector 2.
Page 258: Hopping Motor
(2) Remove the AOLE-PCB. (3) Remove two screws 1, then remove the hopping motor 2. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 259: Planet Gear
(3) Remove two screws 1, then remove the motor bracket assy 2 and the planet gear 3. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 260: Roller B
4 while going through this procedure. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 261: Roller A
Page: 166 Service Guide OL1200 Chapter D Power Envelope Feeder 3.3.7 Roller A (see 3.3.5). (1) Remove the motor bracket assy (2) Remove two gears 1 and then another gear 2. (3) Disengage the plate 3 and the frame 4.
Page 263: Mini Pitch Belt & Feed Roller
(3) Remove two bearings 3 and remove the plate 4. (4) Remove the mini pitch belt 5 and the feed roller 6. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 264: Troubleshooting
Page: 168 Service Guide OL1200 Chapter D Power Envelope Feeder TROUBLESHOOTING Precautions Prior to the Troubleshooting (1) Go through the basic checking items provided in the Operator Guide. (2) Obtain detailed information concerning the problem from the user. (3) Go through the checking in the conditions similar to that in which the problem occurred.
Page 265 Jam error Notifies of - Check the paper in occurrence of jam the Power Envelope while the paper is Feeder. being fed from the - Carry out the Power Envelope recovery printing by Feeder opening the cover, removing jammed paper and closing the cover, and then turning the error display off.
Page 267: Troubleshooting Flow
Page: 169 Service Guide OL1200 Chapter D Power Envelope Feeder 4.3.2 Troubleshooting Flow ( JAM error ) Paper Input Jam Does paper jam at the inlet when the power is turned on? Is the paper located above the sensor plate (Inlet)? Remove the paper.
Page 268 Check the coil resistance (approx. 32ý) of the stepping motor. Is it normal? Replace the stepping motor. Replace the AOLE-PCB. Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 269: Connection Diagram
Page: 170 Service Guide OL1200 Chapter D Power Envelope Feeder CONNECTION DIAGRAM Interconnection Diagram AOLE PCB Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 270: Pcb Layout
Page: 171 Service Guide OL1200 Chapter D Power Envelope Feeder PCB Layout AOLE-PCB Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business...
Page 271 Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)
Page 272: Parts List
AOLE-PCB 4YA4046-1647G11 1 Square-shaped 220A1866P0141 1 56730641 connector Nylon connector cord 4YS4011-4448P4 Stirrer roller gear 4PP4083-2394P1 Copyright 1997, Okidata, Division of OKI America, Inc. All rights reserved. See the OKIDATA Business Partner Exchange (BPX) for any updates to this material. (http://bpx.okidata.com)

Oki OL1200 Service Manual

0 About this Manual

Configuration

Operation Description

3 Parts Replacement

4 Adjustment

Periodic Maintenance

Troubleshooting Procedures

7 Wiring Diagram

Parts List

A RS-232 Serial Interface

B Centronics Parallel Interface

100 C High Capacity Second Paper Feeder

D Power Envelope Feeder

Quick Links

Troubleshooting

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Summary of Contents for Oki OL1200