Utax LP 3128 Service Manual
  1. Manuals
  2. Brands
  3. Utax Manuals
  4. Printer
  5. LP 3128
  6. Service manual

Utax LP 3128 Service Manual

Hide thumbs Also See for LP 3128:
Table of Contents

Advertisement

Quick Links

Download this manual
Service
Manual
Printer
LP 3128
LP 3228
C
First Edition
Date: 06-02-2008
2HSSM060

Advertisement

Table of Contents
loading
Need help?

Need help?

Do you have a question about the LP 3128 and is the answer not in the manual?

Questions and answers

Related Manuals for Utax LP 3128

Summary of Contents for Utax LP 3128

  • Page 1 Service Manual Printer LP 3128 LP 3228 First Edition Date: 06-02-2008 2HSSM060...
  • Page 2 Service Manual Printer LP 4128 LP 4228 First Edition Date: 06-02-2008 2HSSM060...
  • Page 3 CAUTION RISK OF EXPLOSION IF BATTERY IS REPLACED BY AN INCORRECT TYPE. DISPOSE OF USED BATTERIES ACCORDING TO THE INSTRUCTIONS. It may be illegal to dispose of this battery into the municipal waste stream. Check with your local solid waste officials for details in your area for proper disposal. ATTENTION IL Y A UN RISQUE D’EXPLOSION SI LA BATTERIE EST REMPLACEE PAR UN MODELE DE TYPE INCORRECT.
  • Page 4 Revision history Revision Date Replaced pages Remarks...
  • Page 5 This page is intentionally left blank.
  • Page 6 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 7 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 8 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 9 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 10 • Do not remove the ozone filter, if any, from the copier except for routine replacement..... • Do not pull on the AC power cord or connector wires on high-voltage components when removing them; always hold the plug itself...................... •...
  • Page 11 This page is intentionally left blank.

  • Page 12: Table Of Contents

    CONTENTS 1-1 Specifications 1-1-1 Specifications............................1-1-1 1-1-2 Parts names............................1-1-3 (1) Overall ...............................1-1-3 (2) Operation panel..........................1-1-4 1-1-3 Machine cross section ..........................1-1-5 1-2 Installation 1-2-1 Installation environment ..........................1-2-1 1-2-2 Unpacking ...............................1-2-2 1-2-3 Installing the expanded memory (option)....................1-2-3 1-2-4 Installing the memory card (optional)......................1-2-4 1-2-5 Installing the network interface card (optional) ..................1-2-5 1-3 Maintenance Mode 1-3-1 Maintenance mode ..........................1-3-1...
  • Page 13 1-5-8 PWBs ..............................1-5-18 (1) Detaching and refitting the control PWB ..................1-5-18 (2) Detaching and refitting the power source PWB................1-5-21 (3) Detaching and refitting the operation panel PWB ................1-5-23 (4) Detaching and refitting the high voltage PWB.................1-5-24 1-5-9 Others ..............................1-5-28 (1) Detaching and refitting the main motor ...................1-5-28 (2) Detaching and refitting the laser scanner unit .................1-5-29 (3) Detaching and refitting the eraser lamp ..................1-5-31 (4) Direction of installing the left and right cooling fan motors ..............1-5-32...

  • Page 14: Specifications

    2H5/2HS 1-1 Specifications 1-1-1 Specifications Type ..........Desktop Printing method....... Electrophotography, laser scan Paper weight (Simplex model)..Cassette: 60 to 120 g/m MP Tray: 60 to 220 g/m Paper weight (Duplex model) ..Cassette: 60 to 120 g/m (Duplex: 60 to 105 g/m MP Tray: 60 to 220 g/m Paper type ........
  • Page 15 2H5/2HS Controller ........PowerPC 405F5/360 MHz Supported OS ......... Windows 2000 Service Pack 2 or later, Windows Server 2003, Windows XP, Windows Vista, Mac OS 9.x/OS X 10.x Interface.......... Standard: Hi-Speed USB × 1 Option: Network interface card × 1 (10BASE-T/100BASE-TX/1000BASE-T) PDL..........

  • Page 16: Parts Names

    2H5/2HS 1-1-2 Parts names (1) Overall Simplex model Duplex model Figure 1-1-1 Top cover MP tray Paper stopper Subtray Top tray 10. Optional interface slot cover Operation panel 11. USB interface connector Right side cover 12. Rear cover Cassette 13. Power cord connector Front cover 14.
  • Page 17 2H5/2HS (2) Operation panel Figure 1-1-2 Ready indicator Attention indicator Toner indicator Data indicator Paper indicator Jam indicator Cancel key GO key 1-1-4...

  • Page 18: Machine Cross Section

    2H5/2HS 1-1-3 Machine cross section Simplex model Light path Paper path Paper path (option) Duplex model Light path Paper path Paper path (option) Figure 1-1-3 Cassette developing unit 10. Fuser section MP tray Main charger unit 11. Eject section Paper feed/conveying Drum unit 12.
  • Page 19 2H5/2HS This page is intentionally left blank. 1-1-6...

  • Page 20: Installation Environment

    2H5/2HS 1-2 Installation 1-2-1 Installation environment ° ° Temperature: 10 to 32.5 C/50 to 90.5 Humidity: 15 to 80%RH Power supply: 120 V AC, 12 A 220 - 240 V AC, 7.2 A (Average) ± ± Power source frequency: 50 Hz 0.3%/60 Hz 0.3% Installation location...

  • Page 21: Unpacking

    2H5/2HS 1-2-2 Unpacking Figure 1-2-2 Printer Top pad R Outer case Accessory spacer Bottom pad L Toner container Bottom pad R 10. Plastic bag Machine cover 11. Power cord Top pad L 1-2-2...

  • Page 22: Installing The Expanded Memory (Option)

    2H5/2HS 1-2-3 Installing the expanded memory (option) <Procedure> 1. Turn off printer power switch. Caution: Do not insert or remove expanded memory while printer power is on. Doing so may cause damage to the printer and the expanded memory. 2. Remove the right side cover. Right side cover Figure 1-2-3 3.

  • Page 23: Installing The Memory Card (Optional)

    2H5/2HS 1-2-4 Installing the memory card (optional) <Procedure> 1. Turn off printer power switch. Caution: Do not insert or remove memory card while printer power is on. Doing so may cause damage to the printer and the memory card. 2. Open the rear cover. Rear cover Figure 1-2-5x 3.

  • Page 24: Installing The Network Interface Card (Optional)

    2H5/2HS 1-2-5 Installing the network interface card (optional) <Procedure> 1. Turn off printer power switch. Caution: Do not insert or remove network interface card while printer power is on. Doing so may cause damage to the printer and the network interface card. 2.
  • Page 25 2H5/2HS This page is intentionally left blank. 1-2-6...

  • Page 26: Maintenance Mode

    2H5/2HS 1-3 Maintenance Mode 1-3-1 Maintenance mode The product incorporates several service modes which are activated by using the keys on the operation panel or by com- manding from a PC. (1) Executing a service mode Printing a status page for service purpose.........See page 1-3-2. Printing an event log (EVENT LOG)...........See page 1-3-6.
  • Page 27 2H5/2HS Service items Description Printing a status page Description for service purpose Prints a status page for service purpose. The status page includes various printing settings and service cumulative. Purpose To acquire the current printing environmental parameters and cumulative information. Procedure Press the GO key for 10 seconds or more.
  • Page 28 2H5/2HS Service items Description Detail of service information Service information [XXXXXXXX][XXXXXXXX][01/00] Total page 9690 /t/U00/F00/N00 /0020/0020/1061/0811/ /0000/0000/ /00/300/81/31/81/31/ A:1234567890123456 /02870284/03028003/83030286/86000086/02000000/02020202/02020202/ SPD1:0203040508090A0B0C0D0F101112131415161718191A1B1C1D1E1F202122235E /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/ /00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/00000000/...
  • Page 29 2H5/2HS Service items Description Items Description Engine ROM information [Flash ROM version] Boot ROM information [Boot ROM version] Software jumper switch First byte information bit 0 = 1: (Fixed) (hexadecimal) bit 1 = 0: Overseas, 1: Domestic (Japan) [First byte/Second byte bit 2, 3 (Not used) (displayed in OEM model bit 4 = 0: Kyocera, 1: OEM...
  • Page 30 2H5/2HS Service items Description Items Description Fixed asset number (Maximum 16 characters) Paper type attributes Paper type setting value from 1 to 28 (paper weight) (unused paper type are always 0x00.) Memory SPD information (slot 2 to 6 bytes, 8 to 36 bytes, 94 to 95 bytes (total 32 bytes) 4 bytes ×...
  • Page 31 2H5/2HS Service items Description Printing an event log Description (EVENT LOG) Prints a history list of occurrences of paper jam, self-diagnostics, toner replacements, etc. Purpose To allow machine malfunction analysis based on the frequency of paper misfeeds, self diag- nostic errors and replacements. Procedure Connect the USB cable between printer and PC.
  • Page 32 2H5/2HS Service items Description EVENT LOG [EB20MA001/2HS_1000.001.019][40.00SFLB][01] Firmware version: 2HS_30000.001.024 Released: 13/July/2007 Printed page(s) 12345 Paper Jam Log Service Call Log Count. Event Count. Service Code 11111 10.48.01.88.01.01 11234 01.6000 10000 01.6000 10000 10.48.01.88.01.01 9999 01.6000 9999 10.48.01.88.01.01 9998 01.6000 9998 10.48.01.88.01.01 9997...
  • Page 33 2H5/2HS Service items Description Detail of event log (EVENT LOG) information Items Description Control PWB mask version [Engine mask version/Engine software version] BROM version Software jumper switch informa- First byte tion bit 0 = 1: (Fixed) (hexadecimal) bit 1 = 0: Overseas, 1: Domestic (Japan) [First byte/Second byte (dis- bit 2, 3 (Not used) played in OEM mode only)]...
  • Page 34 2H5/2HS Service items Description Items Description (a) Cause of paper jam cont. 10: Paper does not arrive at the registration sensor. (MP tray) [42] 10: Paper does not arrive at the registration sensor. (Cassette 1) [31] 10: Paper does not arrive at the registration sensor. (Cassette 2) [31] 10: Paper does not arrive at the registration sensor.
  • Page 35 2H5/2HS Service items Description Items Description Duplex model cont. Printer (MP tray) (Fuser/paper exit section) [50] [42] Printer inside [47] [48] (Duplex/conveying [49] section) [31] (Cassette 1) [32] Paper feeder 1 (Cassette 2) Registration sensor Paper sensor [33] MP paper sensor Paper feeder 2 Paper exit sensor (Cassette 3)
  • Page 36 2H5/2HS Service items Description Items Description Service Call (Self Count. Service Code diagnostic error) Remembers 1 to 8 of occur- The total page count at Self diagnostic error code rence of self diagnostics error. the time of the self diag- (See page 1-4-4) nostics error.
  • Page 37 2H5/2HS Service items Description Toner install mode Description Replenishes toner rapidly from the toner container into the developing unit. Purpose To execute after replacing the developing unit to replenish toner rapidly into the developing unit. Procedure Toner install mode is performed by simultaneously pressing and holding the GO and Cancel keys for more than 5 seconds.

  • Page 38: Paper Misfeed Detection

    2H5/2HS 1-4 Troubleshooting 1-4-1 Paper misfeed detection (1) Paper misfeed indication If paper jams in the paper conveying system, or no paper sheets are fed at all, the printer automatically goes offline, and the jam indicator will flash rapidly. Status Monitor or COMMAND CENTER can indicate the location of the paper jam (the component where the paper jam has occurred).

  • Page 39: Paper Misfeed Detection Condition

    2H5/2HS (2) Paper misfeed detection condition Simplex model Registration sensor Paper sensor Paper exit sensor PF paper feed sensor PF paper sensor Printer Paper feeder 1 (Option) Duplex model Registration sensor Paper sensor MP paper sensor Paper exit sensor PF paper feed sensor PF paper sensor Printer Peper feeder 1...

  • Page 40: Self-Diagnostic Function

    2H5/2HS 1-4-2 Self-diagnostic function (1) Self-diagnostic function The printer is equipped with self-diagnostic function which automatically halts the printer when an error is detected. The four indicators (Jam, Paper, Attention, Toner) are simultaneously lit, then indicate a specific error by the combination of the four indicators.

  • Page 41: Self Diagnostic Codes Indication

    2H5/2HS (2) Self diagnostic codes indication Sequence of display Indicates the occurrence of a self diagnostics error. 1.6 s 1.6 s 0.8 s 0.8 s Example of self-diagnostic code: 2610 (Refer to the following code conversion table) 0.8 s 0.8 s 0.8 s Indication example Lit (Green)

  • Page 42: Self Diagnostic Codes

    2H5/2HS (3) Self diagnostic codes Remarks Code Contents Causes Check procedures/corrective measures 0150 Control PWB EEPROM error Improper installa- Check the installation of the EEPROM Detecting control PWB EEPROM (U300) tion control PWB (U300) and remedy if necessary (See page communication error.
  • Page 43 2H5/2HS Remarks Code Contents Causes Check procedures/corrective measures 2610 PF paper feed motor error (Paper Defective harness Reinsert the connector. Also check for conti- feeder 1) between PF paper nuity within the connector harness. If none, The PF paper feed motor of paper feeder feed motor and PF remedy or replace the harness (Refer to the 1 ready input is not given for 2 s during...
  • Page 44 2H5/2HS Remarks Code Contents Causes Check procedures/corrective measures 6000 Broken fuser heater lamp wire Poor contact in the Reinsert the connector (See page 1-5-15). The fuser temperature does not rise after fuser thermistor the fuser heater lamp has been turned connector termi- nals.
  • Page 45 2H5/2HS Remarks Code Contents Causes Check procedures/corrective measures 6400 Zero cross signal error Defective harness Reinsert the connector. Also check for conti- The zero cross signal does not reach the between high volt- nuity within the connector harness. If none, control PWB for specified time.

  • Page 46: Image Formation Problems

    2H5/2HS 1-4-3 Image formation problems (1)Completely blank (2)All-black printout. (3)Dropouts. (4)Black dots. (5)Black horizontal printout. streaks. See page 1-4-10 See page 1-4-10 See page 1-4-11 See page 1-4-11 See page 1-4-11 (6)Black vertical (7)Unsharpness. (8)Gray background. (9)Dirt on the top (10)Undulated print- streaks.

  • Page 47: All-Black Printout

    2H5/2HS (1) Completely blank printout. Print example Causes Check procedures/corrective measures Defective drum unit or developing Open the top cover and check that the drum unit and develop- unit. ing unit are correctly seated. Investigate that the terminals between the main charger unit and the drum unit are not in loose contact (See page 1-5-11 and 1-5-10).

  • Page 48: Dropouts

    2H5/2HS (3) Dropouts. Print example Causes Check procedures/corrective measures Defective developing roller (develop- If the defects occur at regular intervals of 62.8 mm/2 " (See ing unit). page 2-4-3), the problem may be the damaged developing roller (in the developing unit). Replace the developing unit (See page 1-5-10).

  • Page 49: Black Vertical Streaks

    2H5/2HS (6) Black vertical streaks. Print example Causes Check procedures/corrective measures Adhesion of oxide to main charger Remove the drum unit (See page 1-5-11). Slide the charger wire. cleaner (green) left and right 2 or 3 times to clean the charger wire, then return it to its original position (CLEANER HOME POSITION).

  • Page 50: Dirt On The Top Edge Or Back Of The Paper

    2H5/2HS (9) Dirt on the top edge or back of the paper. Print example Causes Check procedures/corrective measures Toner contamination in various parts. Dirty edges and back of the paper can be caused by toner accumulated on such parts as the paper chute guide, paper conveying paths, the bottom of the drum and developing unit, and the fuser unit inlet.

  • Page 51: Electric Problems

    2H5/2HS 1-4-4 Electric problems Problem Causes Check procedures/corrective measures (1)The machine does No electricity at the power Measure the input voltage. not operate when the outlet. power switch is The power cord is not Check the contact between the power plug and the outlet. turned on.
  • Page 52 2H5/2HS Problem Causes Check procedures/corrective measures (6)developing clutch Broken developing clutch Check for continuity across the coil. If none, replace the develop- does not operate. coil. ing clutch. Defective harness between Reinsert the connector. Also check for continuity within the con- developing clutch and con- nector harness.

  • Page 53: Mechanical Problems

    2H5/2HS 1-4-5 Mechanical problems Problem Causes/check procedures Corrective measures (1)No primary paper Check if the surfaces of the paper feed roller Clean with isopropyl alcohol. feed. is dirty with paper powder. Check if the paper feed roller is deformed. Check visually and replace any deformed paper feed roller (assembly) (See page 1-5- Defective paper feed clutch installation.

  • Page 54: Assembly And Disassembly

    2H5/2HS 1-5 Assembly and Disassembly 1-5-1 Precautions for assembly and disassembly (1) Precautions Be sure to turn the power switch off and disconnect the power plug before starting disassembly. When handling PWBs, do not touch connectors with bare hands or damage the PWB. Do not touch any PWB containing ICs with bare hands or any object prone to static charge.

  • Page 55: Outer Covers

    2H5/2HS 1-5-2 Outer covers (1) Detaching and refitting the top cover Procedure 1. Open the top cover. Top cover 2. Remove two screws. Screw Screw Figure 1-5-1 3. Extract the boss from the hole. 4. Unhook the A hook. Top cover 5.

  • Page 56: Detaching And Refitting The Right And Left Covers

    2H5/2HS (2) Detaching and refitting the right and left covers Procedure 1. Remove the top cover (See page 1-5-2). 2. Remove the cassette (See page 1-5-5). 3. Open the front cover. 4. Unhook seven hooks and then remove the right cover. Hooks Right cover Figure 1-5-3...
  • Page 57 2H5/2HS 5. Unhook seven hooks and then remove the left cover. Left cover Hooks Figure 1-5-4 1-5-4...

  • Page 58: Paper Feed Section

    2H5/2HS 1-5-3 Paper feed section (1) Detaching and refitting the paper feed assembly (paper feed roller and pickup roller) Procedure 1. Remove the cassette. Cassette Figure 1-5-5 2. Slide the feed shaft. 3. While pressing the lever and then remove the paper feed roller assembly.
  • Page 59 2H5/2HS 4. Check or replace the paper feed assembly and refit all the removed parts. Paper feed roller Feed shaft assembly When refitting the paper feed roller assem- bly, be sure to align the paper feed roller pivot with the slotted hole on the feed shaft. Paper feed roller assembly Feed shaft...

  • Page 60: Detaching And Refitting The Retard Roller Assembly

    2H5/2HS (2) Detaching and refitting the retard roller assembly Procedure 1. Remove the cassette (See page 1-5-5). Retard guide 2. Push the bottom plate down until it locks. Hook 3. Unhook two hooks and then remove the retard guide. Hook Cassestte Bottom plate Cassette...
  • Page 61 2H5/2HS 6. Check or replace the retard roller assembly and refit all the removed parts. Retard roller Caution: Before refitting the retard roller assembly assembly, firmly install the spring onto the projection of the retard roller assembly. Projection Spring Figure 1-5-10 1-5-8...

  • Page 62: Detaching And Refitting The Mp Paper Feed Roller (Duplex Model Only)

    2H5/2HS (3) Detaching and refitting the MP paper feed roller (Duplex model only) Procedure 1. Open the front cover. 2. Pull the MP feed holder (lever) down ( ). 3. Slide the MP feed holder ( ). 4. Remove the MP paper feed roller ( ). MP paper feed roller Front cover MP paper feed roller...

  • Page 63: Developing Section

    2H5/2HS 1-5-4 Developing section (1) Detaching and refitting the developing unit Procedure 1. Open the top cover. Top cover 2. Open the front cover. 3. Remove the developing unit (with toner con- tainer). 4. Check or replace the developing unit and refit all the removed parts.

  • Page 64: Drum Section

    2H5/2HS 1-5-5 Drum section (1) Detaching and refitting the drum unit Procedure 1. Remove the developing unit (See page 1-5- 10). 2. Remove the drum unit. 3. Check or replace the drum unit and refit all the removed parts. Drum unit Figure 1-5-14 1-5-11...

  • Page 65: Detaching And Refitting The Main Charger Unit

    2H5/2HS (2) Detaching and refitting the main charger unit Procedure 1. Remove the drum unit (See page 1-5-11). 2. While pushing on the main plate ( ), slide the main charger unit ( ). Main charger unit Drum unit Main charger unit Main plate Figure 1-5-15 3.

  • Page 66: Transfer/Separation Section

    2H5/2HS 1-5-6 Transfer/separation section (1) Detaching and refitting the transfer roller Procedure 1. Remove the developing unit (See page 1-5- 10). 2. Remove the drum unit (See page 1-5-11). 3. Slide the paper chute guide and unhook the hooks. 4. Remove the paper chute guide. Paper chute guide Paper chute guide Hook...
  • Page 67 2H5/2HS 5. Remove the transfer roller’s shaft from the Shaft both transfer bushes. 6. Remove the gear Z16 from the transfer roller. Transfer roller Shaft Transfer roller Transfer roller Transfer roller Gear Z16 Figure 1-5-18 7. Check or replace the transfer roller and refit all the removed parts.

  • Page 68: Fuser Section

    2H5/2HS 1-5-7 Fuser section (1) Detaching and refitting the fuser unit Procedure 1. Remove the outer covers (See page 1-5-2). 2. Remove two connectors. 3. Release the wires form wire clamps. Wires Wire clamps Connector (Fuser heater lamp) Connector (Fuser thermistor) Figure 1-5-20 4.
  • Page 69 2H5/2HS 5. Remove the rear cover. Rear cover Figure 1-5-22 6. Remove two screws and then remove the fuser unit. 7. Check or replace the fuser unit and refit all the removed parts. Fuser unit Screw Screw Figure 1-5-23 1-5-16...

  • Page 70: Switching The Fuser Pressure

    2H5/2HS (2) Switching the fuser pressure The fuser pressure may be decreased to suppress the print quality problems such as paper creases and curls. It must be cautioned that decreasing the fuser pressure could cause loose toner fusing. Procedure 1. Remove the cassette (See page 1-5-5). 2.

  • Page 71: Pwbs

    2H5/2HS 1-5-8 PWBs (1) Detaching and refitting the control PWB Procedure 1. Remove the right cover (See page 1-5-3). 2. Remove the connectors form the control PWB. Simplex model: Twelve Control PWB Duplex model: Thirteen 3. Release the wires from the wire clamps. Wire clamps Connectors Simplex model: Eleven...
  • Page 72 2H5/2HS 4. Remove five screws. Connectors A: Duplex model only 5. Remove the connectors form the control Simplex model: Two PWB. Duplex model: Three Simplex model: Two Duplex model: Three 6. Unhook the hook and then remove the con- trol PWB assembly. Control PWB Hook Screw...
  • Page 73 2H5/2HS 7. Remove five screws and then remove the control PWB. Screw 8. Check or replace the control PWB and refit all the removed parts. Screw To replace the control PWB, remove the Screw EEPROM (U300) from the old control PWB and mount it to the new control PWB.

  • Page 74: Detaching And Refitting The Power Source Pwb

    2H5/2HS (2) Detaching and refitting the power source PWB Procedure 1. Remove the top cover (See page 1-5-2). 2. Remove the left cover (See page 1-5-3). 3. Remove four connectors. Connector Connector Connector Connector (YC104) Figure 1-5-28 4. Remove four P tight screws, two screws and ground terminal.
  • Page 75 2H5/2HS 6. Remove four screws and then remove the Screws power source plate from the power source PWB. 7. Check or replace the power source PWB and refit all the removed parts. Caution: The power source film must be installed in the specified position. Screws Power source PWB Power source film...

  • Page 76: Detaching And Refitting The Operation Panel Pwb

    2H5/2HS (3) Detaching and refitting the operation panel PWB Procedure 1. Remove the top cover (See page 1-5-2). 2. Remove two screws and then remove the Screw panel cover. 3. Remove the operation panel PWB. 4. Remove the connector. Panel cover 5.

  • Page 77: Detaching And Refitting The High Voltage Pwb

    2H5/2HS (4) Detaching and refitting the high voltage PWB Procedure 1. Remove the developing unit (See page 1-5- 10). 2. Remove the drum unit (See page 1-5-11). 3. Remove the cassette (See page 1-5-5). Stopper ring 4. Remove the outer covers (See page 1-5-2). 5.
  • Page 78 2H5/2HS 12. Remove four screws. 13. Unhook three hooks and then remove the lower base cover. Lower base cover Hook Hook Hook Screws Screws Lower base cover Figure 1-5-34 1-5-25...
  • Page 79 2H5/2HS 14. Remove the spring. 15. Remove the cassette pin. Cassette pin Spring Figure 1-5-35 16. Remove two connectors and then remove the high voltage PWB. 17. Remove the cassette pin holder from the high voltage PWB. Cassette pin holder High voltage High voltage PWB YC202...
  • Page 80 2H5/2HS 18. Check or replace the high voltage PWB and refit all the removed parts. When refitting the high voltage PWB, be High voltage PWB careful about following points. - Position the ground plate so that it is atop the high voltage PWB. Ground plate - Each interface is firmly in contact with each spring.

  • Page 81: Others

    2H5/2HS 1-5-9 Others (1) Detaching and refitting the main motor Procedure 1. Remove the right cover (See page 1-5-3). 2. Remove the connector. Connector Figure 1-5-38 3. Remove the M3 screw and two M4 screws. 4. Remove the main motor. 5.

  • Page 82: Detaching And Refitting The Laser Scanner Unit

    2H5/2HS (2) Detaching and refitting the laser scanner unit Procedure 1. Remove the right cover (See page 1-5-3). 2. Remove the connector from the control PWB. 3. Release the wire clamp. 4. Draw in the connector inside. Connector Control PWB Clamp Connector Figure 1-5-40...
  • Page 83 2H5/2HS 5. Remove four screws and then remove the laser scanner unit. 6. Check or replace the laser scanner unit and refit all the removed parts. Screws Screws Laser scanner unit Figure 1-5-41 1-5-30...

  • Page 84: Detaching And Refitting The Eraser Lamp

    2H5/2HS (3) Detaching and refitting the eraser lamp Procedure 1. Remove the laser scanner unit (See page 1- 5-29). 2. Remove the connector. 3. Remove the eraser lamp. 4. Check or replace the eraser lamp and refit all the removed parts. Eraser lamp Connector Figure 1-5-42...

  • Page 85: Direction Of Installing The Left And Right Cooling Fan Motors

    2H5/2HS (4) Direction of installing the left and right cooling fan motors When detaching or refitting the left and/or right cooling fan motors, be careful of the airflow direction (intake or exhaust). Right cooling Left cooling fan motor fan motor Intake Exhaust Figure 1-5-43...

  • Page 86: Firmware

    2H5/2HS 1-6 Firmware 1-6-1 Downloading firmware Firmware files are named after the following codes: Firmware file name example Compression Software ID S 2 H S _ 1 0 0 0 0 0 1 0 2 1 . c m p Product code Pause (period) 2H5: Simplex model...

  • Page 87: Downloading The Firmware From The Memory Card

    2H5/2HS (1) Downloading the firmware from the memory card To download data written in a memory card (CompactFlash) to the printer, proceed as explained in this section. CAUTION Downloading firmware takes several minutes. Do not turn power off during downloading. If downloading is interrupted by an accidental power failure, etc., the control PWB may have to be replaced.
  • Page 88 2H5/2HS 5. Turn printer power on. The printer starts and finishes downloading automatically. Sequence of display Indication example Off (Amber) Downloading start Lit (Green) Lit (Amber) 4.8 s Off (Amber) Supervisor Off (Green) mode Lit (Amber) 4.8 s (Repeat) Receiving data *: 0.8 s (Repeat)
  • Page 89 2H5/2HS 6. Confirm that downloading was finished nor- mally (See previous page). 7. Turn power off. 8. Remove the memory card. 9. Secure the optional interface slot cover by using two screws. Memory card slot 10. Close the rear cover. 11.

  • Page 90: Paper Feed/Conveying Section

    2H5/2HS 2-1 Mechanical Construction 2-1-1 Paper feed/conveying section Paper feed/conveying section consists of the paper feed unit that feeds paper from the cassette and the MP tray paper feed unit that feeds paper from the MP tray, and the paper conveying section that conveys the fed paper to the transfer/ separation section.

  • Page 91: Mp Tray Paper Feed Section

    2H5/2HS (2) MP tray paper feed section Simplex model Figure 2-1-3 MP tray paper feed section MP upper cover MP lower cover MP base MP guide R/L MPF frame MPF turn guide Control PWB MMOTRDYN YC305-3 MOTCLK YC305-4 Main motor REMOTEN YC305-5 REGDRN...
  • Page 92 2H5/2HS Duplex model Figure 2-1-5 MP tray paper feed section MP paper feed roller MPF frame MPF separation pad MPF guide R/L MPF separator (10) MPF base MPF bottom plate (11) MPF middle tray MPF friction pad (12) MPF upper tray MP paper sensor (13) MPF turn guide Actuator (MP paper sensor)

  • Page 93: Paper Conveying Section

    2H5/2HS (3) Paper conveying section Figure 2-1-7 Paper conveying section Lower registration roller Upper registration roller Registration sensor Actuator (registration sensor) Feed pulley Control PWB MMOTRDYN YC305-3 MOTCLK YC305-4 Main motor REMOTEN YC305-5 REGDRN Registration YC308-2 clutch High voltage PWB Registration REGN sensor...

  • Page 94: Drum Section

    2H5/2HS 2-1-2 Drum section (1) Drum section The durable layer of organic photoconductor (OPC) is coated over the aluminum cylinder base. The OPC tend to reduce its own electrical conductance when exposed to light. After a cyclic process of charging, exposure, and development, the electrostatic image is constituted over the OPC layer.

  • Page 95: Main Charger Unit

    2H5/2HS (2) Main charger unit As the drum rotates in a “clean (neutral)” state, its photoconductive layer is given a uniform, positive (+) corona charge dis- persed by the main charger wire. Due to high-voltage scorotron charging, the charging wire can get contaminated by oxi- dization after a long run.

  • Page 96: Expose Section

    2H5/2HS 2-1-3 Expose section (1) Laser scanner unit The charged surface of the drum is then scanned by the laser beam from the laser scanner unit. The laser beam (780 nm wavelength) beam is dispersed as the polygon motor revolves to reflect the laser beam over the drum.
  • Page 97 2H5/2HS Figure 2-1-13 Laser scanner unit Polygon motor (mirror) Laser diode (APC PWB) Collimator lens Cylindrical lens F-θ lens F-θ lens PD mirror SOS lens Pin photo diode sensor (PD PWB) (10) LSU mirror 2-1-8...

  • Page 98: Developing Section

    2H5/2HS 2-1-4 Developing section The latent image constituted on the drum is developed into a visible image. The developing roller contains a 3-pole (S-NS) magnet roller and an aluminum cylinder rotating around the magnet roller. Toner attracts to the magnet sleeve since it is powdery ink made of black resin bound to iron particles.

  • Page 99: Transfer/Separation Section

    2H5/2HS 2-1-5 Transfer/separation section The transfer/separation section consists of the transfer roller, discharger brush and paper chute guide. A high voltage gen- erated by the high voltage PWB is applied to the transfer roller for transfer charging. Paper after transfer is separated from the drum.

  • Page 100: Cleaning Section

    2H5/2HS 2-1-6 Cleaning section After the transferring process, the drum needs to be physically cleaned of toner which is residual after the development process. The cleaning blade is constantly pressed against the drum and scrapes the residual toner off to the sweep roller. The waste toner is collected at the output end of the sweep roller and sent back to the toner container, into the waste toner reservoir.

  • Page 101: Fuser Section

    2H5/2HS 2-1-7 Fuser section The toner on the paper is molten and pressed into the paper as it passes between the heat roller and the press roller in the fuser unit. The heat roller has a heater lamp inside which continuously turns on and off by the fuser thermistor to maintain the constant temperature onto the heat roller surface.
  • Page 102 2H5/2HS Fuser unit High Power Control PWB voltage source PWB Fuser thermal cutout HEATN YC103-6 YC311-5 YC102-1 SLEEP YC103-7 YC311-6 ZCROSS YC102-3 YC103-8 YC311-3 Fuser heater lamp Fuser thermistor THERM YC311-16 Figure 2-1-21 Fuser section block diagram 2-1-13...

  • Page 103: Paper Exit Section

    2H5/2HS 2-1-8 Paper exit section The paper exit section transports the paper which passed the fuser unit towards the top tray. The paper which passed through the fuser unit turns on the actuator (exit sensor) in the fuser unit, and is led by the guide comprised of the rear cover, frame and the FD cover guide, finally reaching the upper FD roller.
  • Page 104 2H5/2HS Fuser unit Control PWB EXITN YC307-3 Exit sensor Figure 2-1-23 Paper exit section block diagram 2-1-15...

  • Page 105: Duplex/Conveying Section (Duplex Model Only)

    2H5/2HS 2-1-9 Duplex/conveying section (duplex model only) The duplex/conveying section consists of conveying path which sends the paper sent from the eject section to the paper feed/conveying section when duplex printing. Figure 2-1-24 Duplex/conveying section DU cover B DU holder Middle pulley B DU roller DU cover A...

  • Page 106: Electrical Parts Layout

    2H5/2HS 2-2 Electrical Parts Layout 2-2-1 Electrical parts layout (1) PWBs Simplex model Machine left Machine inside Machine right Duplex model Machine left Machine inside Machine right Figure 2-2-1 PWBs Control PWB ..........Main controller: Controls the software such as the print data processing and provides the interface with computers.
  • Page 107 2H5/2HS PD PWB............Controls horizontal synchronizing timing of laser beam. Zener PWB ..........Adjusts the drum surface potential. Eraser lamp PWB ........Eliminates the residual electrostatic charge on the drum. 2-2-2...

  • Page 108: Switches And Sensors

    2H5/2HS (2) Switches and sensors Simplex model Machine left Machine inside Machine right Duplex model Machine left Machine inside Machine right Figure 2-2-2 Switches and sensors Power switch..........Turns ON/OFF the AC power source. Interlock switch ..........Shuts off 24 V DC power line when the top cover is opened. Cassette switch..........

  • Page 109: Other Electrical Components

    2H5/2HS (3) Other electrical components Simplex model Machine left Machine inside Machine right Duplex model Machine left Machine inside Machine right Figure 2-2-3 Other electrical components Main motor ............Drives the paper feed/conveying section and fuser unit. Polygon motor........... Drives the polygon mirror. Right cooling fan motor ........

  • Page 110: Power Source Pwb

    2H5/2HS 2-3 Operation of the PWBs 2-3-1 Power source PWB Power source PWB Left +24V1 cooling fan motor ZCROSS Zero cross signal circuit Power switch SLEEP AC input Switching +5V1 regulator circuit +24V2 Fuser heater Interlock lamp control switch HEATN circuit +3.3V1 THERM...
  • Page 111 2H5/2HS YC104 YC105 YC102 YC103 YC101 Figure 2-3-2 Power source PWB silk-screen diagram Connector Signal Voltage Description YC101 LIVE 120 V AC AC power input Connected 220 - 240 V AC to the AC NEUTRAL 120 V AC AC power input inlet 220 - 240 V AC YC102...

  • Page 112: Control Pwb

    2H5/2HS 2-3-2 Control PWB Control PWB Engine Main controller Laser scanner unit I/F Duplex solenoid (duplex model only) Registration clutch Operation MP paper feed solenoid panel PWB I/F (duplex model only) Paper feed clutch USB I/F +3.3 V Duplex clutch Memory card I/F Paper feed sensor Engine I/F...
  • Page 113 2H5/2HS YC316 YC317 YC307 U300 Figure 2-3-4 Control PWB silk-screen diagram 2-3-4...
  • Page 114 2H5/2HS Connector Signal Voltage Description LED1 3.3/0 V DC Paper indicator display: On/Off Connected LED2 3.3/0 V DC Jam indicator display: On/Off to the opera- Analog Cancel key/GO key: On/Off tion panel SGND Ground LED3 3.3/0 V DC Ready indicator display: On/Off LED4 3.3/0 V DC Attention indicator display: On/Off...
  • Page 115 2H5/2HS Connector Signal Voltage Description YC311 TCNT Transfer current control signal Connected MCNT Main charger output control signal to the high THVDR 0/3.3 V DC Transfer bias output signal: On/Off voltage CASE Analog Cassette switch: On/Off THERM Analog Fuser thermistor detection voltage +24V3 24 V DC 24 V DC power source...

  • Page 116: Appendixes

    2H5/2HS 2-4 Appendixes 2-4-1 Appendixes (1) Wiring diagram Simplex model 2-4-1...
  • Page 117 2H5/2HS Duplex model 2-4-2...

  • Page 118: Repetitive Defects Gauge

    2H5/2HS (2) Repetitive defects gauge First occurrence of defect [24.99 mm/1"] Upper registration roller [37.68 mm/1 "] Lower registration roller [45.216 mm/1 "] Transfer roller [62.8 mm/2 "] Developing roller (developing unit) [73.162 mm/2 "] Heat roller (fuser unit) [78.5 mm/3 "] Press roller (fuser unit) 1/16 [94 mm/3...
  • Page 119 2H5/2HS This page is intentionally left blank. 2-4-4...

This manual is also suitable for:

Lp 3228

Table of Contents