Oki C301 Maintenance Manual
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Oki C301 Maintenance Manual

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This document is "OKI DATA – CONFIDENTIAL"
Only persons and parties authorised by OKI DATA have
permissions to access this document.
This document should not be accessed by any parties
without the approval of OKI DATA.
Anyone who is found to be contradicting the above may be subject to legal action.
Maintenance Manual
C301/C321/C331/C511/C531
Rev
Date
1
2012-04-26
2
2012-06-29
OEL
Revision 2
Oki Data Corporation
Name
C301/C321/C331/C511/C531
Maintenance Manual

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Summary of Contents for Oki C301

  • Page 1 This document is “OKI DATA – CONFIDENTIAL” Only persons and parties authorised by OKI DATA have permissions to access this document. This document should not be accessed by any parties without the approval of OKI DATA. Anyone who is found to be contradicting the above may be subject to legal action.
  • Page 2 Document Revision History Oki Data CONFIDENTIAL Document Revision History Changed items Rev. Date Person in charge Changed items Rev. Page Description of change Date Person in charge Page Description of change 2012-04-26 Issue NME13 H. Enomoto 2012-06-29 NME13 ddition of EDT series H.
  • Page 3 • Despite that exhaustive efforts were made in preparing the manual to make it accurate, it still may contain errors. Oki Data will not hold itself liable for any damage that results or is claimed to have resulted from repairs, adjustment, or modifications of the printers conducted by the users using this manual.

  • Page 4: Table Of Contents

    CONTENTS Oki Data CONFIDENTIAL CONTENTS 1. CONFIGURATION ..............1-1 4.REPLACEMENT OF PARTS ...........4-1 1.1 System configuration ..................1-2 4.1 Notes on replacement of parts ................4-2 1.2 Printer configuration ...................1-3 4.2 Part replacement procedure ................4-4 1.3 Optional items ....................1-4 4.2.1 Belt unit ......................4-4 1.4 Specifications .....................1-5...
  • Page 5 CONTENTS Oki Data CONFIDENTIAL 5. MAINTENANCE MENUS ............5-1 7.5.4.2.1 Check the OS (Operating System)..........7-67 7.5.4.2.2 Has a printer been created? ............7-67 5.1 System Maintenance menu (for maintenance personnel) ........5-2 7.5.4.2.3 Is the IPP setting set to Enable? ..........7-67 5.2 Maintenance Utility ....................5-4 7.5.4.3 A certificate cannot be created.

  • Page 6: Configuration

    Oki Data CONFIDENTIAL CONFIGURATION 1.1 System configuration ..............1-2 1.2 Printer configuration ..............1-3 1.3 Optional items ................1-4 1.4 Specifications ................1-5 1.5 Interface specifications ..............1-9...

  • Page 7: System Configuration

    1. CONFIGURATION Oki Data CONFIDENTIAL 1.1 System configuration Figure 1-1 show the system configurations of the C301dn, C321dn, C331dn, C511dn and C531dn printers. Figure 1-1 System Configuration Diagram 1-2 / 44951501TH Rev.2...

  • Page 8: Printer Configuration

    1. CONFIGURATION Oki Data CONFIDENTIAL 1.2 Printer configuration The internal part of the C301dn, C321dn, C331dn, C511dn, and C531dn printers consists of the following sections: • Electrophotographic processing section • Paper paths • Controllers (CU/PU) • Operator panel • Power supplies (high-voltage power supply/low-voltage power supply) Figure 1-2 shows the configuration of the printers.

  • Page 9: Optional Items

    1.3 Optional items The following optional items are available for the C331dn, C511dn, and C531dn printers: (1) Optional tray (2nd Tray) (except C301 and C321) (2) Additional memory (application to C321, C331 and C531) (3) SD memory card (C531 only)

  • Page 10: Specifications

    1. CONFIGURATION Oki Data CONFIDENTIAL 1.4 Specifications C531dn C511dn C331dn C531dn C511dn C331dn Xerographic method using LEDs (light emitting diodes) as light sources Printing Print speed Color: Color: 26 pages/minute (A4-size plain paper in copy system 22 pages/minute (at 600 ×...
  • Page 11 1. CONFIGURATION Oki Data CONFIDENTIAL C531dn C511dn C331dn C531dn C511dn C331dn (70kg) plain paper, 25mm or less in total thickness 30 to 73% RH at 10°C, 30 to 54% RH at 32°C, 10 to 32°C at 30% RH, 10 to...
  • Page 12 1. CONFIGURATION Oki Data CONFIDENTIAL C301dn C321dn C301dn C321dn Xerographic method using LEDs (light emitting Paper size Printing A4, A5, A6, B5, Letter, Legal 13 inch, Legal 13.5 diodes) as light sources inch, Legal 14 inch, Executive, 16K (184 × 260 system mm), 16K (195 ×...
  • Page 13 1. CONFIGURATION Oki Data CONFIDENTIAL C301dn C321dn C301dn C321dn Operating: 10 to 32°C, 20 to 80% RH (max. wet- Automatic Tray1: Operating (70kg) plain paper, 25mm or feeding by a 250 sheets of 82g/m environment bulb temperature: 25°C, max. wet- and dry-bulb temperature...

  • Page 14: Interface Specifications

    1. CONFIGURATION Oki Data CONFIDENTIAL 1.5 Interface specifications ((2) Cable 1.5.1 USB interface specifications Length: USB 2.0 cable no more than five meters long (two meters or less recommended) 1.5.1.1 USB interface overview (A shielded USB 2.0 cable shall be used.) (1) Basic specifications 1.5.1.3 USB interface signals...

  • Page 15: Network Interface Specifications

    1. CONFIGURATION Oki Data CONFIDENTIAL 1.5.2 Network interface specifications 1.5.2.2 Network interface connector and cable (1) Connector 1.5.2.1 Network interface overview 100BASE-TX/10 BASE-T (automatically switched, not usable simultaneously) Basic specifications Network protocols (*: for C321/C331/C531) Connector pin arrangement TCP/IP spec.

  • Page 16: Description Of Operation

    Oki Data CONFIDENTIAL DESCRIPTION OF OPERATION 2.1 Electrophotographic process mechanism ........2-2 2.2 Printing process ................2-6...

  • Page 17: Electrophotographic Process Mechanism

    2. DESCRIPTION OF OPERATION Oki Data CONFIDENTIAL 2.1 Electrophotographic process mechanism (1) Electrophotographic process (2) Charging The electrophotographic process is explained briefly below: A voltage is applied to the charging roller, which is placed in contact with the OPC drum surface, to charge the OPC drum surface.
  • Page 18 2. DESCRIPTION OF OPERATION Oki Data CONFIDENTIAL (4) Development (5) Transfer Toner adheres to an electrostatic latent image on the drum surface, thereby turning A sheet of paper is placed over the OPC drum surface, and an electric charge is the electrostatic latent image into a toner image.
  • Page 19 2. DESCRIPTION OF OPERATION Oki Data CONFIDENTIAL (6) Fusing (7) Drum cleaning The toner image transferred on the paper is fused on the paper by heat and Unfixed toner remaining on the OPC drum is removed by the drum cleaning blade pressure when the paper passes through the heat roller and the backup roller unit and collected into the waste toner area of the K toner cartridge.
  • Page 20 2. DESCRIPTION OF OPERATION Oki Data CONFIDENTIAL (9) Belt cleaning Toner remaining on the transfer belt is scraped off by the belt cleaning blade and collected into the waste toner box of the transfer belt unit. Transport belt Belt waste toner box Belt cleaning blade 44951501TH Rev.2...

  • Page 21: Printing Process

    2. DESCRIPTION OF OPERATION Oki Data CONFIDENTIAL 2.2 Printing process Paper fed from Tray 1 or Tray 2 is carried by the paper feed roller, the registration roller L, and the transport roller. When paper is fed from the MPT, it is carried by the MPT paper feed roller and the registration roller U.
  • Page 22 2. DESCRIPTION OF OPERATION Oki Data CONFIDENTIAL (1) Paper fed from 1st Tray (3) Transport belt As illustrated in Figure 2-1, after the paper feed motor starts running As the transport belt motor runs in the direction of the arrow, the transport (clockwise) and the 1st clutch comes ON, the paper is fed from the 1st Tray.
  • Page 23 2. DESCRIPTION OF OPERATION Oki Data CONFIDENTIAL (4) Up/down-motions of ID units The up/down motions of the ID units take place driven by the fuser motor ID unit motions during color printing and the up/down clutch. Y-ID unit Down Figure 2-3 shows the motions of each of the ID units when the printer is...
  • Page 24 2. DESCRIPTION OF OPERATION Oki Data CONFIDENTIAL (5) Ejection unit and paper ejection Eject roller (drive) Face-up tray (a) Face-down ejection detection sensor Face-down ejection is available when the face-up tray is closed. Fuser unit In that state, the separator FU is fixed in the direction illustrated in Figure 2-5, and the face-up tray detection sensor is enabled.
  • Page 25 2. DESCRIPTION OF OPERATION Oki Data CONFIDENTIAL (6) Duplex printing system (paper flipping and returning to the paper feed route) In a cer tain period of time after the fuser motor star ts running Eject roller (drive) counterclockwise and the rear end of paper being fed passes the eject sensor, the fuser motor starts running clockwise.
  • Page 26 2. DESCRIPTION OF OPERATION Oki Data CONFIDENTIAL (7) Cover-opening motions of the color registration sensor and the density sensor As illustrated in Figure 2-9, when the solenoid is energized, the link lever moves, causing the cover of the color registration sensor and the density sensor to open.
  • Page 27 2. DESCRIPTION OF OPERATION Oki Data CONFIDENTIAL Outline of color registration correction Color registration is corrected by reading correction patterns, which are printed on the belt, Transport belt by use of the color registration sensor located inside the sensor shutter under the belt unit.
  • Page 28 2. DESCRIPTION OF OPERATION Oki Data CONFIDENTIAL Error checking methods and remedies The color registration correction test function among the other self-diagnostic functions is employed to check errors. (Section 5.3.2.6) Remedies for different errors • CALIBRATION (L or R), DYNAMICRANGE (L or R) Check 1: If the above indication appears, check the connected state of the sensor cable.
  • Page 29 2. DESCRIPTION OF OPERATION Oki Data CONFIDENTIAL Outline of density correction Density is corrected by reading correction patterns, which are printed on the belt, by use of Transport belt the density sensor located inside the sensor shutter under the belt unit.
  • Page 30 2. DESCRIPTION OF OPERATION Oki Data CONFIDENTIAL Error checking methods and remedies Principle of toner sensor detection The density correction test function among the other self-diagnostic functions is employed to check errors. (Section 5.3.2.7) Shielding plate Remedies for different errors Prism •...
  • Page 31 2. DESCRIPTION OF OPERATION Oki Data CONFIDENTIAL Counter specifications Total page count MPT page count Tray 1 page count Tray 2 page count Color page count Monochrome page count Description Total number of Number of print media Number of print media...
  • Page 32 2. DESCRIPTION OF OPERATION Oki Data CONFIDENTIAL A4/Letter conversion table Each count shall increase, in relation to every sheet of paper, by the values in the table below. Paper size Simplex Duplex LETTER EXECUTIVE LEGAL14 LEGAL13.5 LEGAL13 COM-9 COM-10 MONARCH...

  • Page 33: Installation

    Oki Data CONFIDENTIAL INSTALLATION 3.1 Cautions, and do’s and don’ts ............3-2 3.2 Unpacking procedure ..............3-3 3.3 Printer installation instructions .............3-4 3.4 List of components and accessories ...........3-5 3.5 Assembly procedure ..............3-6 3.6 Printing of MenuMap ..............3-21 3.7 Connection methods ..............3-22...

  • Page 34: Cautions, And Do's And Don'ts

    3. INSTALLATION Oki Data CONFIDENTIAL 3.1 Cautions, and do’s and don’ts Warning Warning • Do not install the printer in any potentially high-temperature location or a near heat • If water or any other liquid enters the inside of the printer, remove the power plug from the power outlet and contact the customer center.

  • Page 35: Unpacking Procedure

    3. INSTALLATION Oki Data CONFIDENTIAL 3.2 Unpacking procedure Warning Personal injury may occur. Since the printer weights approximately 25 kg (packed), it should be lifted by two or more people. 44951501TH Rev.2...

  • Page 36: Printer Installation Instructions

    3. INSTALLATION Oki Data CONFIDENTIAL 3.3 Printer installation instructions Plan view • Install the printer in a location where the following temperature and humidity are met: Ambient temperature : 10 to 32°C Ambient humidity : 20 to 80 % RH (relative humidity)

  • Page 37: List Of Components And Accessories

    3. INSTALLATION Oki Data CONFIDENTIAL 3.4 List of components and accessories • Check to make sure that the components are free from damage, dirt or other irregu- Software DVD-ROM larities in their appearance. Power cord • Ensure that none of the accessories to the components is missing and that they are Warranty card and user registration card free from breakage or other flaw.

  • Page 38: Assembly Procedure

    3. INSTALLATION Oki Data CONFIDENTIAL 3.5 Assembly procedure (3) Remove the four protective sheets. 3.5.1 Assembly of the printer main unit Setup of the printer (1) Remove the protective tapes (six places) from the surface of the printer. Protective sheet...
  • Page 39 3. INSTALLATION Oki Data CONFIDENTIAL (5) Slide the locks of the (four) toner cartridges to the left to lock the toner cartridges. Loading paper in the paper cassette Lock (blue) (1) Pull out the paper cassette. Do not remove the rubber from the plate.
  • Page 40 3. INSTALLATION Oki Data CONFIDENTIAL (4) Load the paper with the print side facing down. Loading paper in the multi-purpose tray Note! • Place the paper against the front side of the paper cassette. (1) Open the multi-purpose tray and also the paper supporter.
  • Page 41 3. INSTALLATION Oki Data CONFIDENTIAL (4) Insert the paper, print-face up, along the manual feed guide straight as far as it will mark Insert the paper, print-face up, straight as far as it will go. Do not allow the level of paper to pass the ““ ”” mark of the paper guide (100 Note! sheets of 70 kg paper, or 10 envelopes).

  • Page 42: Connection Of The Power Cable

    3. INSTALLATION Oki Data CONFIDENTIAL 3.5.2 Connection of the power cable Turning On the Power (1) Insert the power cord into the printer. Power supply conditions • Observe the following conditions: : 220 - 240 VAC (Range 198 - 264 VAC) Power frequency : 50 Hz / 60 Hz ±...
  • Page 43 3. INSTALLATION Oki Data CONFIDENTIAL Turning off the power No use for a long time When the printer is not used for a long time due to consecutive holidays or when on Note! Turning off the power without taking proper shutdown steps may damage and vacation, when changing or attaching parts in repaire or maintenance, unplug the AC cord.

  • Page 44: Installation And Recognition Confirmation Of An Option

    3. INSTALLATION Oki Data CONFIDENTIAL 3.5.3 Installation and recognition confirmation of an option 2. Place the printer on an optional tray unit. Note! The printer weights approximately 22 kg. It should be lifted by two or more (1) Installation of an optional tray (second tray) unit people.
  • Page 45 3. INSTALLATION Oki Data CONFIDENTIAL 4. Connect the power cord and the printer cable to the printer and For Windows PCL / PCL XPS printer driver turn the power ON. Note! This procedure uses C531 driver as an example. For Windows Vista, select [Start] - [Control Panel] and click [Printers].
  • Page 46 Connector cover Note! • Proper operation by use of an unspecified product cannot be guaranteed. Lock Be sure to use Oki product. • Additional memory of 256 MB or more is recommended for long-sheet 3. Remove the printer cable. printing.
  • Page 47 3. INSTALLATION Oki Data CONFIDENTIAL 7. Attach the bracket and tighten the screw. 4. Touch the metal part of the printer to discharge static. Metal part Screw Bracket 8. Connect the printer cable to the printer. 5. Loosen the screw and remove the bracket.
  • Page 48 3. INSTALLATION Oki Data CONFIDENTIAL 10. Connect the power cord to the printer and turn the power ON. Note! If the operator panel displays [SERVICE CALL 031: ERROR], remove the memory and reinstall it. 11. Print the configuration report and check the printout for successful installation of the additional memory.
  • Page 49 3. INSTALLATION Oki Data CONFIDENTIAL (3) Installation of an SD card (C531dn only) 3. Remove the printer cable. Note! • Fonts cannot be downloaded to any SD cards for C531dn. • Even in the power-off status, when the AC cord is connected, a part of the circuit is operated, therefore, make sure to unplug the cable.
  • Page 50 3. INSTALLATION Oki Data CONFIDENTIAL 6. Insert an SD memory card into the slot. 8. Connect the printer cable to the printer. Note! • SD memory cards are not usable when the safety switch against possible erasure is in the active position, so be sure to move it to the inactive position.
  • Page 51 3. INSTALLATION Oki Data CONFIDENTIAL 12. Set up SD Memory Card in the printer driver. 11. Print the configuration report and check the printout for successful installation of the SD memory card. Note! Administrator privileges on the computer are required.
  • Page 52 3. INSTALLATION Oki Data CONFIDENTIAL For Mac OS X Note! • This procedure uses Mac OS X 10.6 as an example. • This procedure uses C531 driver as an example. Select [System Preferences] from the Apple menu. Click [Print & Fax].

  • Page 53: Printing Of Menumap

    3. INSTALLATION Oki Data CONFIDENTIAL 3.6 Printing of MenuMap (C531dn MenuMap sample) Print MenuMap to check to make sure that the printer operates correctly. (1) Load A4 paper in a tray. (2) Press the button several times until [Information Menu] appears, and then press button.

  • Page 54: Connection Methods

    3. INSTALLATION Oki Data CONFIDENTIAL 3.7 Connection methods <USB connection> Connecting the computer to the printer (1) Plug the USB cable into the USB interface connector of the printer. Note! Refer to the user’s manual for operating environment. (2) Plug the USB cable into the USB interface connector of the computer.
  • Page 55 3. INSTALLATION Oki Data CONFIDENTIAL Switching off the printer and the computer <Ethernet cable connection> Note! Refer to the user’s manual for operating environment. Connecting the computer to the printer (1) Plug the Ethernet cable into the network interface connector of the printer.

  • Page 56: Checking Of Paper Used By The User

    3. INSTALLATION Oki Data CONFIDENTIAL 3.8 Checking of paper used by the user Load the media used by the user in the printer, make media weight/media type setting, print out MenuMap/Demo Page, and check printouts to make sure that no toner flakes off.

  • Page 57: Replacement Of Parts

    Oki Data CONFIDENTIAL REPLACEMENT OF PARTS This chapter describes the procedures of the field replacement of parts, assemblies and units. The procedures are to detach them. Reverse the procedures to attach them. The reference part numbers used in this manual (such as ) do not identical to the part numbers in the maintenance disassembly configuration diagram (44951501TL) and RSPL (44951501TR) for the manual.

  • Page 58: Notes On Replacement Of Parts

    4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL 4.1 Notes on replacement of parts (1) Prior to replacing a part, unplug the AC cord and the interface cable. (2) Do not disassemble the printer so long as it operates properly. (a) Be sure to use the following procedure to unplug the AC cord: (3) Minimize disassembly.
  • Page 59 4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL Maintenance Tools: Table 4-1-2 shows the tools necessary to use Maintenance Utility software. Table 4-1-1 shows the tools necessary to replace printed-circuit boards and units: Table 4-1-2: Maintenance Tools Maintenance Tool Quantity Remarks Table 4-1-1: Maintenance Tools...

  • Page 60: Part Replacement Procedure

    4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL 4.2 Part replacement procedure This section describes the procedure for replacing the parts and assemblies shown in the (3) Turn the (two blue) lock handles of the belt unit in the direction of the arrows disassembly diagrams below.

  • Page 61: Fuser Unit

    4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL 4.2.2 Fuser unit 4.2.3 Left side cover (1) Open the top cover. (1) Open the top cover. (2) Pull the (blue) fuser unit lock lever in the direction of the arrow and detach the fuser...

  • Page 62: Right Side Cover

    4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL 4.2.4 Right side cover 4.2.5 Face-up tray (1) Open the top cover. (1) Open the face-up tray in the direction of the arrow and, warping it, disengage two portions to detach the face-up tray.

  • Page 63: Rear Cover

    4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL 4.2.6 Rear cover 4.2.7 LED assembly. and LED assembly springs (1) Remove the left side cover and the right side cover. (1) Open the top cover. (2) Remove the three (silver-colored) screws (2) Remove the cables of the LED assembly. As shown in diagram (2), apply force in the direction of the arrow to unlatch the portion A and then the portion B to detach (3) Unlatch two portions A with a flat-blade screwdriver.

  • Page 64: Image Drum Fan And Zhj Board

    4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL 4.2.8 Image drum fan and ZHJ board 4.2.9 CU/PU PCB and low-voltage power supply Warning (1) Remove the left side cover. Electric shock hazard (2) Remove the (silver-colored) screw and the two (silver-colored) screws When replacing the low-voltage power supply, electric shock may occur.
  • Page 65 4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL Note! • The low-voltage power supply and the AC inlet (4.2.15) should be replaced combined (they have been qualified to a safety standard, combined). 44951501TH Rev.2...

  • Page 66: Top Cover Assembly

    4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL 4.2.10 Top cover assembly 4.2.11 Top cover and LED head cable assembly (1) Remove the left side cover, the right side cover and the rear cover. (1) Demount the top cover assembly. (2) Remove the plate shield assembly and then the LED head cables.

  • Page 67: Operator Panel Assembly

    4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL 4.2.12 Operator panel assembly 4.2.13 Board IBB and LCD (1) Remove the right side cover and plate shield assembly. (1) Remove the operator panel assembly. (2) Remove the cable of the operator panel assembly.

  • Page 68: Mpt Assembly

    4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL 4.2.14 MPT assembly (1) Remove the cassette assembly. (2) Open the MPT assembly (3) Pull the MPT assembly in the direction of the arrow and release the two supports to detach the MPT assembly.
  • Page 69 4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL 4.2.15 Front FAN, Hopping motor, Rear FAN, Holder Assy.- Switch, Image Drum motor and cover-open switch (1) Remove the left side cover, the right side cover, the rear cover, the MPT assembly, the plate-rear, the low-voltage power supply, the plate shield assembly and the operator panel assembly.

  • Page 70: High-Voltage Power Supply Board

    4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL 4.2.16 High-voltage power supply board Warning Electric shock hazard When replacing the high-voltage power supply, electric shock may occur. Wear insulated gloves, or be careful not to touch the conductors or terminals of the power supply directly.

  • Page 71: Guide-Ejection Assembly, Fuser Connector Assembly And Color-Registration Assembly

    4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL 4.2.17 Guide-ejection assembly, fuser connector assembly and color-registration assembly (1) Remove the left side cover, the right side cover, the rear cover and the top cover assembly. (2) Remove the CU/PU PCB and the low-voltage power supply.

  • Page 72: Frame-Mpt Assembly And Feeder Assembly

    4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL 4.2.18 Frame-MPT assembly and feeder assembly (1) Remove the left side cover, the right side cover, the rear cover, the hopping motor, the plate shield assembly, the operator panel assembly, the cover-open switch and the frame-MPT-side.

  • Page 73: Side-L Assembly, Side-R Assembly And Base Assembly ⑦

    4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL 4.2.19 Side-L assembly, side-R assembly and base assembly (1) Remove the left side cover, the right side cover, the rear cover, the top cover assembly, the operator panel assembly, the feeder assembly, the guide-ejection assembly and the registration assembly.

  • Page 74: Feed Rollers

    4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL 4.2.20 Feed rollers (1) Remove the cassette. (2) Unlatch the feed rollers Latch 4-18 44951501TH Rev.2...

  • Page 75: Locations To Lubricate

    4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL 4.3 Locations to lubricate This section shows the locations to lubricate. The other locations must not be lubricated. Lubrication is not required during assembly or disassembly, except that, after lubricant is wiped off locations, the appropriate lubricant specified must be applied to the locations.
  • Page 76 4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL -1 44452301PA Side-R Assy. -2 44452301PA Side-R Assy. EM-30LP Class Bx2 EM-30LP Class Bx4 Apply a normal amount of Apply a normal amount of MOLYKOTE (EM-30LP) MOLYKOTE (EM-30LP) to the whole circle of 2 places...
  • Page 77 4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL -3 44452301PA Side-R Assy. -4 44452301PA Side-R Assy. EM-30LP Class B x2 EM-30LP Class C Gear-Reduct-FU Apply a normal amount of Apply a normal amount MOLYKOTE (EM-30LP) Gear-Idle-FUA of MOLYKOTE to the whole circle of gear...
  • Page 78 4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL -5 44452301PA Side-R Assy. -6 44452301PA Side-R Assy. EM-30LP Class A EM-30LP Class C Apply a small amount of MOLYKOTE Apply a normal amount of MOLYKOTE (EM-30LP) (EM-30LP) to the hatched areas. to the whole circle of hatched areas (Shaft end eurface side).
  • Page 79 4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL 44452401PA Side-L Assy. 44452601PA Sensor Assy.-Regist EM-30LP Class A Frame-Shutter Apply a small amount of MOLYKOTE Plate-Position-Caulking (EM-30LP) to the hatched areas. EM-30LP Class C Apply a normal amount of MOLYKOTE (EM-30LP) to the gear tooth tops.
  • Page 80 4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL -1 44452701PA Front Assy.-Reg/Hop -2 44452701PA Front Assy.-Reg/Hop EM-30LP Class A Apply a normal amount of MOLYKOTE Note :1 (EM-30LP) to the hatched areas. (Side of roller and ditch of shaft) (The other side is also the same. : Two...
  • Page 81 4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL -3 44452701PA Front Assy.-Reg/Hop -4 44452701PA Front Assy.-Reg/Hop EM-30LP Class C Plate-Feed-A_Caulking Apply a normal amount of MOLYKOTE (EM-30LP) to the hatched areas (Shaft end surface side). EM-30LP Class C Apply a normal amount of MOLYKOTE (EM-30LP) to the hatched areas (Shaft).
  • Page 82 4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL -5 44452701PA Front Assy.-Reg/Hop 44364101PA Eject Assy Gear-Idle_Exit(Z38) Plate-Feed-B_Caulking Gear-Idle-Z35 Gear-Idle-MPT-Z35 EM-30LP Class C Apply a normal amount of MOLYKOTE (EM-30LP) to EM-30LP Class C the hatched areas Apply a normal amount of MOLYKOTE (EM- (Post end surface side).
  • Page 83 4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL -1 44453001PA Printer Unit-PX750 -3 44453001PA Printer Unit-PX750 EM-30LP Class C Spring-Torsion-L Apply a normal amount of MOLYKOTE Panmotoroil Class C (EM-30LP) to the hatched areas. Apply a normal amount of Panmotoroil to Spring-Torsion-R the portion of the slot of solid coiling of this torsion-spring using a brush.
  • Page 84 4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL -5 44453001PA Printer Unit-PX750 44452501PA Base-Assy EM-30LP Class C Apply a normal amount of MOLYKOTE (EM-30LP) to the end face of Plate-R. (hatched areas) EM-30LP Class C Plate-Base Apply a normal amount of MOLYKOTE (EM-30LP) to the end face of Plate-R.
  • Page 85 4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL 44458601PA Belt-Unit 44381001PA Fuser-Assy EM-30LP Class A x8pcs Cam-Release Apply a small amount of MOLYKOTE EM-30LP Class C x2pcs (EM30LP) to the inside of Bearing- Apply a normal amount of TR(Belt). MOLYKOTE (EM30LP) to (Both sides, total 8 places) bearin portion (Both side).
  • Page 86 4.REPLACEMENT OF PARTS Oki Data CONFIDENTIAL -1 44453701PA Cover-Assy.-Rear 44359201PA Frame-Assy.-MPT EM-30LP Class B SF-133 Class B Apply a normal amount of MOLYKOTE (EM-30LP) to Apply a normal amount of HANAL (SF-133) Stacker-FU_Base the hatched areas. (Center of shaft) to the hatched areas.

  • Page 87: Maintenance Menus

    Oki Data CONFIDENTIAL MAINTENANCE MENUS C301/C302/C331/C511/C531 can be adjusted by using Maintenance Utility, or button operation on its operator panel. The printer has maintenance menus in addition to general menus. The menus intended for adjustment purposes should be selected. 5.1 System Maintenance menu (for maintenance personnel) ....5-2 5.2 Maintenance Utility ...............5-4...

  • Page 88: System Maintenance Menu (For Maintenance Personnel)

    5. MAINTENANCE MENUS Oki Data CONFIDENTIAL 5.1 System Maintenance menu (for maintenance personnel) By turning on each printer while holding down , its System Maintenance menu is Value Category Item (1st Line) Function started. The menu is displayed only in English irrespective of the destination of the printer.
  • Page 89 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL Value Category Item (1st Line) Function (2nd Line) CHANGE Changes a password. Pressing the OK button PASS- for this menu displays NEW PASSWORD and WORD VERIFY PASSWORD, allowing for entry of a new password.

  • Page 90: Maintenance Utility

    5. MAINTENANCE MENUS Oki Data CONFIDENTIAL 5.2 Maintenance Utility The adjustments described in table 5-2 should be made by using Maintenance Utility. Section in Operation from Maintenance operator panel The following details the utility: Option Adjustment Utility (section in this...
  • Page 91 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL Section in Operation from Section in Operation from Maintenance operator panel Maintenance operator panel Option Adjustment Utility (section in this Option Adjustment Utility (section in this Operating maintenance Operating maintenance Manual manual) Manual manual) 10 Password Initializes a password.

  • Page 92: User Maintenance Menu Functions

    5. MAINTENANCE MENUS Oki Data CONFIDENTIAL 5.3 User maintenance menu functions 5.3.1 Maintenance menu (for end-users) Operator panel display Category Description Option Setting The maintenance menu category is a general menu category (not the system maintenance (upper display) (lower display) menu).

  • Page 93: Self-Diagnostic Mode

    5. MAINTENANCE MENUS Oki Data CONFIDENTIAL 5.3.2 Self-diagnostic mode Operator panel display Category Description Option Setting (upper display) (lower display) This section describes LEVEL 0 and LEVEL 1. BG SETTING Corrects print variations that occur due to temperature and humidity environment, print 5.3.2.1 Operator Panel...
  • Page 94 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL (1) Menu option switching (1) Menu option switching Self-diagnostic Only while displayed as shown in a shaded area ( XXXXX LEVEL0 Holding down or ONLINE or momentarily pressing switches mode layout (entire) the level of the self-diagnostic mode can be switched.
  • Page 95 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL (1) Menu option switching LEVEL1 is used to select the option shown in a shaded area ( XXXXX ), and pressing OK executes the option. OK or is used to switch to the option in a non-shaded area ( XXXXX ), and, after that, is used to select an option.
  • Page 96 5.3.2.2 Normal self-diagnostic mode (level 1) 5.3.2.2.1 Entering self-diagnostic mode (level 1) Note: Entering the System Maintenance mode of C301/C321/C331/C511/C531 The following is the normal self-diagnostic mode menu: requires a password. Refer to table 5-1 (C301/C321/C331/C511/C531 ). Self-diagnostic menu Maintenance Option...
  • Page 97 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL 5.3.2.3 Switch scan test The switch scan test is used for input sensor and switch checking. Heater frame thermistor Image drum up-down sensor Fuser thermistor- Toner sensor M 1. Enter the self-diagnostic mode (level 1) and, until SWITCH SCAN appears on...
  • Page 98 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL Table 5-3: SWITCH SCAN detail Lower display shows asterisk (*) when function on upper display is unavailable *1: An L is displayed when cover is open. Upper Display Detail Lower display Detail Lower display...
  • Page 99 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL 5.3.2.4 Motor and clutch test The motor and clutch test is used for motor and clutch testing. Tray-1 registration clutch 1. Enter the self-diagnostic mode (level 1) and, until MOTOR & CLUTCH TEST Color (registration) shutter...
  • Page 100 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL Table 5-4 Unit name displayed Driving restriction Remarks ID MOTOR All of the (black, yellow, magenta and cyan) – image drums must be removed. BELT MOTOR All of the (black, yellow, magenta and cyan) –...
  • Page 101 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL 5.3.2.5 Test printing Display Settings Function PRINT EXECUTE – Starts printing with the press of OK button, and The test printing is used for printing test patterns stored in the PU. The controller stores the ends printing with the press of the CANCEL button.
  • Page 102 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL 4. With PRINT EXECUTE displayed on the lower display by the operation in step 2, pressing the OK button executes test printing by using the setting(s) made in steps 2 and 3. The test printing is cancelled by pressing the CANCEL button.
  • Page 103 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL • The following message appears during printing: • The displays are switched by pressing P=*** ETMP=***UTMP=*** W=*** REG=****EXT=*** P: Number of test print pages ETMP: A parameter for correction of constant hopping motor speed (an W: Wait time ambient temperature) (in decimal).
  • Page 104 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL • The displays are switched by pressing TR1:k**y**m**c** TR2:k**y**m**c** TR1: A transfer voltage parameter VTR1 table identification number (in hex). TR2: A transfer voltage parameter VTR2 table identification number (in hex). • The displays are switched by pressing...
  • Page 105 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL 5.3.2.6 Color registration adjustment test Pressing the CANCEL button during the test cancels the test (turning on the ONLINE lamp), restoring the state for step 2. The color registration adjustment test is used for adjusting color registration or investigating When REG ADJ RESULT is executed: the causes of color misregistration.
  • Page 106 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL 5.3.2.7 Density adjustment test When DENS ADJ PAR-SET is executed: The setting for the density adjustment parameter is displayed. The density adjustment test is used for performing a density adjustment function test and When AUTO CALIBRATION is executed: displaying the result of it to judge whether the density adjustment mechanism is proper.
  • Page 107 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL 5.3.2.8 Consumable counter display Upper display Lower display Format Unit Detail K-STC MODE ********TIMES Decimal Times Each display the print dot count The consumable counter display is used for viewing the usage of consumables.
  • Page 108 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL 5.3.2.9 Print counter display 5.3.2.10 Factory/Shipping mode setting The print counter display is used for viewing print counter values. The Factory/Shipping mode setting is used for switching from the Factory to Shipping mode. 1. Enter the self-diagnostic mode and, until PRINTER STATUS appears, press 1.
  • Page 109 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL 5.3.2.11 Self-diagnostic function setup Display Settings Behavior Function ID UNIT ENABLE Performs checking. Enables or disables the image drum The self-diagnostic function setup is used for enabling or disabling the error detection by installation checking operation.

  • Page 110: Various Types Of Printing On Stand-Alone Basis

    5. MAINTENANCE MENUS Oki Data CONFIDENTIAL 5.3.2.12 LED head serial number display 5.3.3 Various types of printing on stand-alone basis The LED head serial number display is used for viewing whether downloaded data about Menu Map printing LED heads agrees with the serial numbers marked on the LED heads.

  • Page 111: Button Functions At Power-On

    Oki Data CONFIDENTIAL 5.3.4 Button functions at power-on C301/C302/C331/C511/C531 has the following button functions operated when turned on. When held down until the upper and lower LCD displays show PAM CHECK and three or four asterisks (****), respectively, the following buttons work.

  • Page 112: Setup After Part Replacement

    5. MAINTENANCE MENUS Oki Data CONFIDENTIAL 5.4 Setup after part replacement Note: When removing or writing information from/into the EEPROM by using The following describes the adjustments required after part replacement: Maintenance Utility, use the procedure shown below to place the printer to...
  • Page 113 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL 2. When the EEPROM on a board to remove cannot be accessed: (2) Change to Shipping mode (section 2.4.1.1.10.4 of Maintenance Utility Operating Manual) When the operator panel displays SERVICE CALL 104 (Engine EEPROM Error)

  • Page 114: Manual Density Adjustment Operation

    Oki Data CONFIDENTIAL 5.5 Manual density adjustment operation C301/C321/C331/C511/C531 is shipped with "Automatic" set for the auto density adjustment mode. When "Manual" is set for the mode by a user, the printer may print density out of adjustment while being used. Perform manual density adjustment operation when the printer has a density trouble.

  • Page 115: Printer Admin Menu

    5. MAINTENANCE MENUS Oki Data CONFIDENTIAL 5.6 Printer ADMIN MENU To display ADMIN MENU, turn on the printer while holding down the OK button. C331/ C511/ Category Option Settings Description C531 C321 C301 Memo: Displaying ADMIN MENU requires entry of a password. The password defaults...
  • Page 116 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL C331/ C511/ C331/ C511/ Category Option Settings Description C531 Category Option Settings Description C531 C321 C301 C321 C301 SYS ADJUST ENABLE Sets whether to enable or disable SECU- JOB LIMITA- Sets whether to accept or discard...
  • Page 117 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL C331/ C511/ C331/ C511/ Category Option Settings Description C531 Category Option Settings Description C531 C321 C301 C321 C301 FILE PARTITION EXECUTE Displays a list of SD memory card FILE INITIAL Sets whether to enable or disable SIZE partition sizes.
  • Page 118 5. MAINTENANCE MENUS Oki Data CONFIDENTIAL C331/ C511/ Category Option Settings Description C531 C321 C301 Sets Pn specified Tray 2 by “TRAY2 SIDM SIDM TRAY2 ID No.” FX/PPR Emu in CSF control MENU command (ESC EM Pn). [Display Condition] • Tray 2 installment •...

  • Page 119: Periodic Maintenance

    Oki Data CONFIDENTIAL PERIODIC MAINTENANCE 6.1 Cleaning ..................6-2 6.2 LED lens array cleaning..............6-3 6.3 Pick-up roller cleaning ..............6-5 6.4 Pinter internal cleaning ..............6-6...

  • Page 120: Cleaning

    Oki Data CONFIDENTIAL 6.1 Cleaning The inside and outside of C301/C321/C331/C511/C531 should be cleaned with a waste cloth and a handy vacuum cleaner when necessary. Note! Do not directly touch the image drum terminals, LED lens array and LED head connectors.

  • Page 121: Led Lens Array Cleaning

    6. PERIODIC MAINTENANCE Oki Data CONFIDENTIAL 6.2 LED lens array cleaning The LED lens array should be cleaned when a printed surface contains a vertical white belt LED head cleaning or line (void or light print). The LED heads should be cleaned when a printed output contains a faded image, a white...
  • Page 122 6. PERIODIC MAINTENANCE Oki Data CONFIDENTIAL (3) Lightly wipe the (four) LED head lens surfaces with soft tissue paper. Note! Solvents, such as methyl alcohol or thinner, damage the LED heads. Do not use them. LED head LED head (4) Close the top cover.

  • Page 123: Pick-Up Roller Cleaning

    6. PERIODIC MAINTENANCE Oki Data CONFIDENTIAL 6.3 Pick-up roller cleaning The pick-up rollers should be cleaned when a printed surface contains a vertical line. (3) Wipe the separator roller of the paper cassette with a cloth tightly wrung out with water.

  • Page 124: Pinter Internal Cleaning

    Toner may adhere to the metal shaft between the fuser and the cyan image drum cartridge (3) Take out the image drum cartridges: depending on print patterns. The inside of C301/C321/C331/C511/C531 should be cleaned 1. Take out the (four) image drum cartridges, and place them on a flat table.
  • Page 125 Shaft Handle (6) Reinstall the fuser unit. For details, refer to the fuser unit replacement section of the C301/C321/C331/C511/C531 user documentation about setting up. Fuser unit fixing lever (7) Gently put the (four) image drum cartridges back into the printer.

  • Page 126: Troubleshooting

    Oki Data CONFIDENTIAL TROUBLESHOOTING 7.1 Before troubleshooting..............7-2 7.2 Points to check before dealing with image troubles ......7-2 7.3 Precautions for dealing with image troubles .........7-2 7.4 Preparation for troubleshooting ............7-2 7.5 Troubleshooting procedure ............7-3 7.6 Fuse check .................7-72...

  • Page 127: Before Troubleshooting

    (4) Do not expose the image drums to light for five minutes or more at room temperature. 7.4 Preparation for troubleshooting (1) Operator panel display C301/C321/C331/C511/C531 displays its trouble status on its operator panel LCD (liquid crystal display). Perform proper troubleshooting according to messages displayed on the LCD. 44951501TH Rev.2...

  • Page 128: Troubleshooting Procedure

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5 Troubleshooting procedure 7.5.1 LCD messages list Use the following procedure to troubleshoot a problem with C301/C321/C331/C511/C531: Initializing Problem Atten- Occurred Panel display ( identifies line tion Detail that no display is provided) lamp lamp...
  • Page 129 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Atten- Atten- Panel display ( identifies Panel display ( identifies line tion Detail line tion Detail that no display is provided) that no display is provided) lamp lamp lamp lamp CHECKING FILE Indicates that file system is being checked.
  • Page 130 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Normal Atten- Panel display ( identifies line tion Detail Solution Atten- that no display is provided) Panel display ( identifies lamp lamp line tion Detail Solution that no display is provided) lamp lamp Varies Varies Indicates the printer is printing a network PRINT NETWORK −...
  • Page 131 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Atten- Atten- Panel display ( identifies Panel display ( identifies line tion Detail Solution line tion Detail Solution that no display is provided) that no display is provided) lamp lamp lamp lamp CANCELING JOB Blink Varies Indicates that, as the internal log storage −...
  • Page 132 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Warning Panel display ( identi- Atten- fies that no display is line tion Detail Solution Panel display ( identi- Atten- provided) lamp lamp fies that no display is line tion Detail Solution provided) lamp lamp...
  • Page 133 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Panel display ( identi- Atten- Panel display ( identi- Atten- fies that no display is line tion Detail Solution fies that no display is line tion Detail Solution provided) lamp lamp provided) lamp lamp Varies Indicates the fuser is near the end of −...
  • Page 134 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Panel display ( identi- Atten- Panel display ( identi- Atten- fies that no display is line tion Detail Solution fies that no display is line tion Detail Solution provided) lamp lamp provided) lamp lamp Varies Varies A density adjustment shutter error 1.
  • Page 135 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Panel display ( identi- Atten- Panel display ( identi- Atten- fies that no display is line tion Detail Solution fies that no display is line tion Detail Solution provided) lamp lamp provided) lamp lamp Varies A color registration adjustment error.
  • Page 136 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Panel display ( identi- Atten- Panel display ( identi- Atten- fies that no display is line tion Detail Solution fies that no display is line tion Detail Solution provided) lamp lamp provided) lamp lamp PRESS ONLINE SW...
  • Page 137 7. TROUBLESHOOTING Oki Data CONFIDENTIAL C301/C321/C331/C511/C531 displays the following service call error when detecting an Panel display ( identi- Atten- unrecoverable error: fies that no display is line tion Detail Solution provided) lamp lamp SERVICE CALL LOAD %MEDIA_ Indicates a request for printing by...
  • Page 138 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Atten- Atten- Online Code Online Code Operator panel display tion Description Operator panel display tion Description lamp nnnnnn lamp nnnnnn lamp lamp LOAD %MEDIA_SIZE%/ Blink Indicates a mismatch between a tray Error LOAD %MEDIA_SIZE%/ Blink Indicates a tray paper size, or paper size,...
  • Page 139 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Atten- Atten- Online Code Online Code Operator panel display tion Description Operator panel display tion Description lamp nnnnnn lamp nnnnnn lamp lamp DOWNLOAD MESSAGE Varies Varies Indicates wiring update message data Error LOAD %MEDIA_SIZE% Blink Indicates that, with the multi-purpose Error succeeded.
  • Page 140 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Atten- Atten- Online Code Online Code Operator panel display tion Description Operator panel display tion Description lamp nnnnnn lamp nnnnnn lamp lamp REPLACE TONER Blink Indicates that the printer is full of waste Error REPLACE TONER...
  • Page 141 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Atten- Atten- Online Code Online Code Operator panel display tion Description Operator panel display tion Description lamp nnnnnn lamp nnnnnn lamp lamp CHECK TONER Blink Indicates a toner sensor detected an Error CHECK UNDER BELT...
  • Page 142 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Atten- Atten- Online Code Online Code Operator panel display tion Description Operator panel display tion Description lamp nnnnnn lamp nnnnnn lamp lamp CHECK TONER Blink Indicates the lever of a toner cartridge is Error WAIT A MOMENT...
  • Page 143 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Table 7-1-2: Service call errors list. Atten- Online Code Operator panel display tion Description Display Causes Error detail Actions lamp nnnnnn lamp POWER OFF/ON Remove any RAM POWER OFF/ON Blink Indicates the printer has a fatal error.
  • Page 144 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Display Causes Error detail Actions Display Causes Error detail Actions SERVICE CALL Interface POWER OFF/ON Video error. Is the CU/PU installed Reinstall it 067:ERROR monitor error 074:ERROR An error was properly? properly. 068:ERROR xxxxxxxx detected in Replace it.
  • Page 145 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Display Causes Error detail Actions Display Causes Error detail Actions SERVICE CALL Rear-fan error Does the fan at the rear of the Be sure of the SERVICE CALL LED head Is the LED head installed...
  • Page 146 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Display Causes Error detail Actions Display Causes Error detail Actions SERVICE CALL Belt unit fuse- Is the belt unit installed Re-install it. SERVICE CALL Compensation Does an error message Turn off and on 154:ERROR cut error...
  • Page 147 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Display Causes Error detail Actions Display Causes Error detail Actions SERVICE CALL A backup Turn off and on POWER OFF/ON CU program Invalid processing was Replace the CU/ 176:ERROR thermistor the printer. 203:ERROR error (203 performed with a CU program.
  • Page 148 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Display Causes Error detail Actions Display Causes Error detail Actions POWER OFF/ON Tray-2 POWER OFF/ON Belt Is the cable from the belt Connect the cable 933:ERROR CPU clock 901:ERROR temperature thermistor to the CU/PU properly.

  • Page 149: Preparation For Troubleshooting

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.2 Preparation for troubleshooting (8-2) Two-sided printing jam occurs during taking in the paper into Duplex unit................7-46 (1) LCD display trouble ..................7-25 (8-3) Two-sided printing jam occurs in the process of reversing paper..7-47 (1-1) LCD displays nothing ..............7-25...

  • Page 150: Lcd Display Trouble

    CU/PU board fuse Check F5 (C531/C331/C321) or F7 (C511/ Replace the Pins 10, 11 and 12: 0VP. C301) is not cut. CU/PU board. Locate short circuits by pulling out the cords (1-1-2) Connection-line chec connected to the CU/PU board one by one...

  • Page 151: Error Message Display Related To Operator Panel

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL (1-3) Error message display related to operator panel 7.5.2.(2) Problem operation after printer is turned on (2-1) No operations start Check item Check operation Actions for NG results Check item Check operation Actions for NG...

  • Page 152: Abnormal Sound Is Heard

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL Check item Check operation Actions for NG Check item Check operation Actions for NG results results (2-1-3) Connection-line check (2-2-3) Gear tooth disengagement check (consumable load problem) Operator panel Check the same as (1-1). Follow (1-1).

  • Page 153: Startup Time Of Printer Is Long

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL (2-3) Bad odor is generated (2-4) Startup time of printer is long Check item Check operation Actions for NG Check item Check operation Actions for NG results results (2-3-1) Bad odor locating (2-4-1) Fuser unit check Fuser unit Remove the fuser unit and check the odor.
  • Page 154 7. TROUBLESHOOTING Oki Data CONFIDENTIAL (3) Paper jam error numbers and locations Paper jam locations The printer displays an error code and PAPER JAM or FACE-UP STACKER ERROR on J1 (370:DUPLEX REVARSAL) J7 (383:DUPLEX ENTRY) the second row of the operator panel when jammed with paper inside of it.
  • Page 155 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Error code: 370, 371 or 372 (4) Place a finger behind the belt unit lock levers (blue) and raise and remove it. Lock lever (blue) (1) Press the OPEN button and open the top cover.
  • Page 156 7. TROUBLESHOOTING Oki Data CONFIDENTIAL (7) Turn the lock levers inwards to lock the belt unit. (9) Turn the lock levers inwards to lock the fuser unit. Fuser unit lock lever (blue) Lock lever (blue) Lock lever (blue) Fuser unit lock lever (blue) (8) Put the fuser unit back into position.
  • Page 157 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Error code: 380, 381, 382, 385 or 389 Remove in the direction of the arrow any paper jammed the inside front of the printer. Fuser unit Paper (1) Press the OPEN button and open the top cover.
  • Page 158 7. TROUBLESHOOTING Oki Data CONFIDENTIAL (5) Close the top cover. Error code: 390 (1) Press the OPEN button and open the top cover. OPEN button (2) Take out the image drum unit, place it on a flat surface, and cover it with black paper.
  • Page 159 7. TROUBLESHOOTING Oki Data CONFIDENTIAL (4) Install the image drum unit in the printer so as to situate the K toner cartridge Error code: 391 toward the front of the printer. (1) Pull the tray 1 out of the printer.
  • Page 160 7. TROUBLESHOOTING Oki Data CONFIDENTIAL (4) Press the OPEN button and open and close the top cover. Error code: 392 (1) Pull the tray 2 out of the printer. Tray 2 (2) Remove paper. (3) Insert the tray 2 back into the printer.
  • Page 161 7. TROUBLESHOOTING Oki Data CONFIDENTIAL (4) Press the OPEN button and open and close the top cover. Error code: 409 (1) Press the OPEN button and open the top cover. OPEN button (2) Take out the image drum unit, place it on a flat surface, and cover it with black paper.
  • Page 162 7. TROUBLESHOOTING Oki Data CONFIDENTIAL Remove in the direction of the arrow any paper jammed the inside front of the (5) Place a finger behind the belt unit lock levers (blue) and raise and remove it. printer. Fuser unit Lock lever (blue)
  • Page 163 7. TROUBLESHOOTING Oki Data CONFIDENTIAL (8) Turn the lock levers inwards to lock the belt unit. (10) Turn the lock levers inwards to lock the fuser unit. Fuser unit lock lever (blue) Lock lever (blue) Lock lever (blue) Fuser unit lock lever (blue) (9) Put the fuser unit back into position.

  • Page 164: Paper Feed Jam (Error Code 391: 1St Tray)

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL (3-2) Jam occurs immediately after the paper feed is started. (1st tray) 7.5.2. (3) Paper feed jam (error code 391: 1st tray) (3-1) Jam occurs immediately after the power is turned on. (1st tray) Check item...

  • Page 165: Feed Jam (Error Code 380)

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.2. (4) Feed jam (error code 380) Check item Check operation Actions for NG (4-1) Jam occurs immediately after the power is turned on. results Check item Check operation Actions for NG (3-2-4) Check the system connection...

  • Page 166: Jam Occurs Immediately After The Paper Feed Is Started

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL (4-2) Jam occurs immediately after the paper feed is started. 7.5.2. (5) Paper feed jam (error code 390: Multipurpose tray) (5-1) Jam occurs immediately after the power is turned on. (Multipurpose tray) Check item Check operation...

  • Page 167: Jam Occurs Immediately After Paper Feed Is Started

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL (5-2) Jam occurs immediately after paper feed is started. (Multipurpose tray) Check item Check operation Actions for NG results Check item Check operation Actions for NG results (5-2-4) Check the system connection (5-2-1) Check condition of the paper running path Paper feed motor Check the connection condition of the cable.

  • Page 168: Paper Running Jam (Error Code 381:)

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.2. (6) Paper running jam (error code 381:) Check item Check operation Actions for NG (6-1) Jam occurs immediately after the power is turned on. results Check item Check operation Actions for NG (6-2-3) Motor operation check...

  • Page 169: Jam Occurs In The Middle Of Paper Running Path

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL (6-3) Jam occurs in the middle of paper running path. Check item Check operation Actions for NG results Check item Check operation Actions for NG results (6-2-4) Check the system connection (6-3-1) Motor operation check Feed motor driving Check the connection condition of the cables.

  • Page 170: Jam Occurs Immediately After Paper Has Reached The Fuser

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL (6-4) Jam occurs immediately after paper has reached the fuser. 7.5.2. (7) Paper unloading jam (error code 382) (7-1) Paper unloading jam occurs immediately after the power is turned on. Check item Check operation Actions for NG...

  • Page 171: Paper Unloading Jam Occurs After A Paper Is Taken Into Printer

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL (7-2) Paper unloading jam occurs after a paper is taken into printer. Check item Check operation Actions for NG results Check item Check operation Actions for NG results (7-2-4) Check the system connection (7-2-1) Check condition of the paper running path Fuser motor drive Check the connection condition of the cables.

  • Page 172: Two-Sided Printing Jam (Error Code: 370, 371, 372, 373, 383)

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.2. (8) Two-sided printing jam (error code: 370, 371, 372, 373, 383) (8-2) Two-sided printing jam occurs during taking in the paper into Duplex unit. (8-1) Two-sided printing jam occurs immediately after the power is turned on.

  • Page 173: Two-Sided Printing Jam Occurs In The Process Of Reversing Paper

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL (8-3) Two-sided printing jam occurs in the process of reversing paper. (8-5) Paper is not supplied from the Duplex unit to the regist roller. Check item Check operation Actions for NG Check item Check operation...

  • Page 174: Paper Size Error (Error Code 400)

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.2. (9) Paper size error (error code 400) 7.5.2. (10) ID unit Up/Down error (Service call 142) (9-1) Jam occurs when paper end is located near the IN1 sensor. (10-1) Error occurs during the Up movement of the ID unit...

  • Page 175: Error Occurs During The Down Movement Of The Id Unit

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.2. (11) Fuser unit error (error 170 to 177) Check item Check operation Actions for NG (11-1) Error occurs immediately after the power is turned on. results Check item Check operation Actions for NG (10-1-3) Sensor check...

  • Page 176: The Low Voltage Power Supply Fan Does Not Rotate Immediately After The Power Is Turned On

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.2. (12) Motor fan error (error code 122, 128) Check item Check operation Actions for NG (12-1) The low voltage power supply fan does not rotate immediately after the power is results turned on. (11-2-2) Temperature increase of fuser unit...

  • Page 177: Print Speed Is Slow. (Performance Is Low.)

    CU/PU of each capacitor CP6 (C531/C331/C321) and CU/PU board. board CP8 (C511/C301) show 5V. (See section 7.6.) Square connector Check if any foreign material exists in the Remove the Or, instead of the above, check if each fuse connecting portion of the square connector.

  • Page 178: Toner Cartridge Cannot Be Recognized. (Error Code 540, 541, 542, 543)

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL Note! Toner sensor operation check method using the SWITCH SCAN function of 7.5.2. (16) Toner cartridge cannot be recognized. (error code 540, 541, 542, 543) the self-diagnostic mode. (16-1) Error caused by the consumable items.

  • Page 179: Error Caused By The Defective Mechanism

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL (16-3) Error caused by the defective mechanism 7.5.2. (17) Fuse cut error (error codes 153 to 155) (17-1) Fuse cut error Check item Check operation Actions for NG results Check item Check operation Actions for NG...

  • Page 180: Humidity Sensor Error (Error Code 123)

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.2. (18) Humidity sensor error (error code 123) Check item Check operation Actions for NG (18-1) Humidity sensor error results Check item Check operation Actions for NG (18-1-2) Environment condition results Sharp change Is the environment condition changed sharply...
  • Page 181 7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.2.(19) Connection diagram 7-56 44951501TH Rev.2...

  • Page 182: Troubleshooting Of Image Problems

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.3 Troubleshooting of image problems (1) Color is faint and fades across pages (see Fig. 7-2 A)........7-58 (1-1) Color is faint and fades..............7-58 (2) The white area of printed pages is dirty (see Fig. 7-2 B)........7-59 (2-1) The white area of printed pages is dirty (partially).

  • Page 183: Color Is Faint And Fades Across Pages (See Fig. 7-2 A)

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.3 (1) Color is faint and fades across pages (see Fig. 7-2 A). Check item Check operation Actions for NG (1-1) Color is faint and fades. results Check item Check operation Actions for NG (1-1-4) High-voltage terminal...

  • Page 184: The White Area Of Printed Pages Is Dirty (See Fig. 7-2 B)

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.3 (2) The white area of printed pages is dirty (see Fig. 7-2 B). (2-2) The white area of printed pages is dirty (all over). (2-1) The white area of printed pages is dirty (partially).

  • Page 185: Printed Pages Are Blank (See Fig. 7-2 C)

    KEEP MODE of the system maintenance menu. CU/PU board fuse Measure resistance values of F501 (C551/ Replace the F501 (C531/C331/ C331/C321) and F6 (C511/C301). CU/PU board. C321), F6 (C511/ or less : Normal C301) or more: NG 7-60 44951501TH Rev.2...

  • Page 186: Vertical Lines Are Produced In Printed

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.3 (4) Vertical lines are produced in printed pages. 7.5.3 (5) Print quality problems appear periodically (see Fig. 7-2 E). (4-1) Fine lines (colored) (see Fig. 7-2 D) (5-1) Print quality problems appear vertically and periodically.

  • Page 187: Color Misregistration Is Significant

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.3 (6) Color misregistration is significant. (7) Black filled-in printing (6-1) The message “Adjusting color” displayed at power on stays for a short time. (7-1) Printed pages are filled-in black entirely. Check item Check operation...

  • Page 188: Color Jobs Are Printed In Monochrome, Not In Color

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.3 (8) Color jobs are printed in monochrome, not in color. (8-1) False setting of the limited-color printing menu Check item Check operation Actions for NG results (8-1-1) Limited-color printing menu state Boot Menu item Select “Process Setup”...

  • Page 189: Network Troubleshooting

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.4 Network troubleshooting 7.5.4.1 Connection errors occur by use of a Web browser (C331/C531 only) (1) Printing cannot be performed from the utility If the printer setting page cannot be displayed at “https://<printer IP address>” by a Web...

  • Page 190: Has A Certificate Been Created

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.4.1.1 Has a certificate been created? 7.5.4.1.2 Is the SSL/TLS setting set to ON? Log in as an administrator and select Security and Encryption (SSL/TLS). Log in as an administrator and select Security and Encryption (SSL/TLS).

  • Page 191: Check The Version Number Of The Web Browser

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.4.1.3 Check the version number of the Web browser. For Netscape Start the web browser and select HELP and Netscape. Check the version number of the Web browser being used. A recommended version is Netscape 6 or higher.

  • Page 192: Print Operation Is Not Possible (For C321/C331/C531)

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.4.2 Print operation is not possible (C331/C531 only) 7.5.4.2.1 Has a printer been created? If print operation is not possible by using an encrypted IPP printer, check the followings. The printer may not have been created properly.

  • Page 193: The Printer Is Printing

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.4.3.2 The printer is printing. 7.5.4.4.1 The printer IP address has been changed. No certificate can be created during printing. (Print operation has priority.) If the printer IP address is different from the IP address used during creation of a CSR in trying to install a certificate, an error occurs and installation of a certificate is not performed.

  • Page 194: Install An Intermediate Certificate

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.4.4.4 Install an intermediate Certificate. After the Certificate Import Wizard appears, install a certificate by following the on- screen procedure. Select “Automatically select the certificate store based on the Some certifying authorities perform installation of an SSL server certificate (a printer types of certificate,”...

  • Page 195: Other Questions (For C321/C331/C531)

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.4.5 Other questions (C331/C531 only) 7.5.4.5.6 The error message “The security certificate was issued by a company you have not chosen to trust. View the Other possible questions are described below. certificate to determine whether you want to trust the certifying authority”...

  • Page 196: The Error Message "Name Of Security Certificate Is Invalid Or Does Not Match The Site Name" Is Displayed

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL On the General tab of the displayed Certificate information window, press the Install After the Certificate Import Wizard appears, install a certificate by following the on- Certificate… button. screen procedure. Select “Automatically select the certificate store based on the types of certificate,”...

  • Page 197: Warning Indication When Ssl Is Enabled For Self-Signed Certificates

    7. TROUBLESHOOTING Oki Data CONFIDENTIAL 7.5.4.6 Restrictions when using Internet Explore 7 Solution: The Web page is displayed by clicking “Continue browsing this site (not recommended)” on the warning screen. (C331/C531 only) It doesn’t affect the Web page functions, and the Web page can be used for browsing or changing printer settings with no problems.

  • Page 198: Fuse Check

    7.6 Fuse check If any of the following errors occurs, check relevant fuses on the CU control board, the PU control board and the high-voltage power supply board. C531/C331/C321 Fuse Errors C511/C301 Fuse Errors Fuse Name Error Description Insert Point...

  • Page 199: Connection Diagrams

    Oki Data CONFIDENTIAL CONNECTION DIAGRAMS 8.1 Resistance value checking ............8-2 8.2 Layout of parts ................8-5 8.3 Firmware revision numbers ............8-19...

  • Page 200: Resistance Value Checking

    8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL 8.1 Resistance value checking Unit Circuit diagram and composition Part drawing Resistance value Between pins 1 and 2: 3.4 Transport belt motor Between pins 3 and 4: 3.4 ID motor Both ends of IP2: 1 or less 44951501TH Rev.2...
  • Page 201 8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL Unit Circuit diagram and composition Part drawing Resistance value Fuser motor Both ends of IP1: 1 or less Between pins 1 and 2: 3.4 Feed motor Between pins 3 and 4: 3.4 Between pins 1 and 2: 3.4 2nd feed motor Between pins 3 and 4: 3.4...
  • Page 202 8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL Unit Circuit diagram and composition Part drawing Resistance value Upper roller heater #1 Between pins 1 and 2: Several ohms to several tens of ohms Between pins 3 and 4: Several ohms to several tens of ohms Upper roller heater #2 Between pins A1 and A2: Approx.

  • Page 203: Layout Of Parts

    8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL 8.2 Layout of parts (1) Print engine controller PCB (CU/PU PCB) C531 Component side DTNR Board-CLQ INTH DUPR YHEAD MHEAD CHEAD KHEAD C103 R232 9 8 6 38 37 C102 RM17 R195 R172 44853499...
  • Page 204 8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL Soldering side R793 R777 R778 D509 11 12 Q519 21 25 26 Q518 34 35 43 44 40 41 C691 R649 C690 R662 C685 RM521 RM520 Q516 Q517 R800 R643 C675 R642 C659 C656...
  • Page 205 8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL C321/C331 Component side DTNR Board-CLQ INTH DUPR YHEAD MHEAD CHEAD KHEAD C103 R232 9 8 6 38 37 C102 RM17 R195 44853499 R172 R162 R499 C136 C137 C135 R154 R153 R150 IC15 FLCS1 R140...
  • Page 206 8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL Soldering side R793 R777 R778 D509 11 12 Q519 21 25 26 Q518 34 35 43 44 40 41 C691 R649 C690 R662 RM521 RM520 C685 Q516 Q517 R800 R643 C675 R642 C659 C656...
  • Page 207 8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL C511 Component side DTNR YHEAD MHEAD CHEAD KHEAD INTH DUPR R299 R265 R148 R146 R136 R138 R141 R135 R129 R124 R125 R118 R111 R112 C111 DCHEAT R359 C116 448691 POWER SSNS 44951501TH Rev.2...
  • Page 208 8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL Soldering side C626 R681 R662 C624 R669 C644 C622 C621 C620 C619 C618 C617 C616 C615 C637 C636 C635 C634 RM507 RM506 Q518 RM509 RM508 R654 C614 R655 Q516 C611 C609 R628 Q800 C638...
  • Page 209 8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL C301 Component side YHEAD MHEAD CHEAD KHEAD DTNR INTH DUPR R299 R265 R148 R146 R136 R138 R141 R135 R129 R124 R125 R118 R111 R112 C111 DCHEAT R359 C116 448691 POWER SSNS 8-11 44951501TH Rev.2...
  • Page 210 8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL Soldering side C626 R681 R662 C624 R669 C644 C622 C621 C620 C619 C618 C617 C616 C615 C637 C636 C635 C634 RM507 RM506 Q518 RM509 RM508 R654 C614 R655 Q516 C611 C609 R628 Q800 C638...
  • Page 211 8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL (2) Second tray control PCB Component side Soldering side MAIN1 D510 FET502 R542 R541 C535 R544 MAIN2 R543 R501 J520 R511 J503 R506 Q502 R557 C519 R556 TR502 C518 R555 C517 R554 C516 R553...
  • Page 212 8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL (3) Control panel PCB (4) Toner sensor PCB LED4 LED3 R776 R508 Q505 LED5 R777 R795 R796 R762 LED6 SNS2 LED7 R532 R507 R520 R502 R820 LED8 R501 C504 R531 R730 R555 R705 R516...
  • Page 213 8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL (5) Waste toner sensor PCB (7) Soft Power SW FGZA2 LED501 SW501 (6) Color adjustment sensor PCB 8-15 44951501TH Rev.2...
  • Page 214 8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL (8) High-voltage power supply PCB JP105 JP106 JP107 CH-M CH-C CH-Y CH-K DB-M SB-M DB-C SB-C DB-Y SB-Y DB-K SB-K JP100 JP103 JP102 JP101 JP95 JP98 JP99 JP97 JP94 JP96 JP92 JP93 JP87 JP90...
  • Page 215 8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL (9) Low-voltage power supply PCB (10) ID unit ID unit (for consumables) Contact point Fuse Toner-low sensor PCB (PRZ PCB) ID unit Contact point 8-17 44951501TH Rev.2...
  • Page 216 8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL (11) Transfer belt unit Transfer belt unit (for consumables) Contact point Fuse Relay PCB Contact point Transfer belt unit Fuse 8-18 44951501TH Rev.2...

  • Page 217: Firmware Revision Numbers

    8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL 8.3 Firmware revision numbers 8.3.1 ROM control numbers C531/C331/C321 C511/C301 ROM-FD ROM-FD Firmware ROM- Number of white Date of issue Notes PU F/W revision no. drawing no. revision no. dots marked on Date of...

  • Page 218: Checking And Indication Of The Revision Number

    8. CONNECTION DIAGRAMS Oki Data CONFIDENTIAL 8.3.2 Checking and indication of the revision number 8.3.3 Stamp of maintenance board indication (1) Print out MenuMap and check to make sure that the firmware revision number has A designated article number is stamped in the area for maintenance board indication on the been updated.

This manual is also suitable for:

C321C331C511C531

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