Sony OEP-4 Service Manual
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Sony OEP-4 Service Manual

Color video printer
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COLOR VIDEO PRINTER
OEP-4
SERVICE MANUAL
Volume 1 1st Edition

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  • Page 1 COLOR VIDEO PRINTER OEP-4 SERVICE MANUAL Volume 1 1st Edition...
  • Page 2 Ce manual est destiné uniquement aux personnes compétentes en charge de l’entretien. Afin de réduire les risques de décharge électrique, d’incendie ou de blessure n’effectuer que les réparations indiquées dans le mode d’emploi à moins d’être qualifié pour en effectuer d’autres. Pour toute réparation faire appel à une personne compétente uniquement. OEP-4...

  • Page 3: Table Of Contents

    Pinch Roller ............1-14 1-5-10. Capstan Roller/Platen Roller ....... 1-15 4-1. Sensors and Motors ............4-2 1-5-11. Cam Gear (L)/Cam Gear (R) ....... 1-16 4-2. Mechanical Parts ............. 4-2 1-5-12. Interlock Switch ..........1-19 1-6. Unleaded Solder ............1-19 OEP-4...
  • Page 4 Power Circuit Block ..........5-9 5-3. Outline of KY-582G Board ..........5-9 5-4. Outline of DP-407G Board ..........5-9 5-5. Mechanical Control Block ..........5-10 5-5-1. Outline of Motor Driving Function Blocks ..5-10 5-5-2. Sensor Detection Circuits ........5-13 OEP-4...

  • Page 5: Manual Structure

    Manual Structure Purpose of this manual This manual is the service manual Vol. 1 of Color Video Printer OEP-4. This manual describes the information on maintenance and the service information such as service overview, electrical alignment, troubleshooting, and location and functions of sensors, motors, and mechanical parts.

  • Page 7: Service Overview

    SE-749 board SE-747 board IF-988G board SE-753 board 1-2. Main Parts Location Mechanical main unit assembly DC fans (Head unit) DC motors (Head) Switching regulator Stepping motor DC fan (For inside) DC motors (Ribbon) Ribbon drive assembly Thermal head OEP-4...

  • Page 8: Removing/Installing The Cabinet

    (CN805, CN601 and CN602) on board the MA-142G board. 4. Remove the four hooks, then remove the front panel CN108 assembly. Harnesses MA-142G board BVTT 2.6 x 5 6. Attach the rear panel assembly in the reverse order of steps 1 to 5. OEP-4...

  • Page 9: Replacing The Board

    2.6 x 5 W2.3 Flexible flat MA-142G Harness cables board Harnesses MEC-24G board 8. Install the MEC-24G board in the reverse order of 6. Install the MA-142G board in the reverse order of steps 1 to 7. steps 1 to 5. OEP-4...

  • Page 10: Ky-582G Board/Dp-407G Board

    10. Disconnect the flexible flat cable from the connector (CN501) on the KY-582G board. 11. Remove the two screws (BVTP2.6 x 6), then remove the spring (LCD) and DP-407G board. 12. Disconnect the flexible flat cable from the connector (CN407) on the DP-407G board. OEP-4...

  • Page 11: Board

    SE-750 board in the direction of the Hook [B] arrow D. 15. Disconnect the harness from the connector on the SE- 750 board. Hook [C] 16. Install the SE-747 board, SE-750 board and SE-752 board in the reverse order of steps 1 to 15. OEP-4...

  • Page 12: If-990G Board/If-989G Board

    Flexible flat cable CN108 BVTT 2.6 x 5 IF-989G board 9. Install the IF-990G and IF-989G boards in the reverse 9. Install the IF-988G board in the reverse order of steps order of steps 1 to 8. 1 to 8. OEP-4...

  • Page 13: Replacing The Main Parts

    90 mm or more PS3 x 6 PS3 x 6 Shield plate (A) Protector sheet (A) Switching regulator Harness PS3 x 6 Harnesses 3 x 6 8. Attach the switching regulator in the reverse order of steps 1 to 7. OEP-4...

  • Page 14: Stepping Motor

    Pick-up belt gear Tension arm W2.3 assembly Pick-up belt Switching regulator BVTT2.6 x 5 BVTT2.6 x 5 Helical extension spring Tension arm (S) subassembly 10. Attach the mechanical main unit assembly in the reverse order of steps 1 to 9. OEP-4...
  • Page 15 Pick-up belt Cam gear (L) Shaft Oblong hole Oblong hole of Hole of cam W2.3 chassis gear (L) Sensor gear 50 mm or more ø2 Shaft 16. Assemble this unit in the reverse order of steps 1 to 5. OEP-4...

  • Page 16: Ribbon Drive Assembly

    Idler gear (R) Limiter (T) 2.6 x 5 Ribbon gear assembly Ribbon drive assembly Harnesses Limiter (S) assembly Supply lock DC motor (ribbon) subassemblies 13. Attach the ribbon drive assembly in the reverse order of steps 1 to 12. 1-10 OEP-4...

  • Page 17: Center Stay Assembly

    Ribbon rail (R) Be sure to securely attach the shaft of the pendulum arm to the hole of the center stay assembly. Portion B Portion A BVTT 2.6 x 5 BVTT Front corner stay 2.6 x 5 CCM-53G board 1-11 OEP-4...

  • Page 18: Paper Feed Guide Assembly

    A of the paper feed guide assembly into the portions B of the main chassis. W3.0 Bearing Tray rail (L) (850) Helical extension spring Pick-up arm (R) Tray rail (R) BVTT subassembly 2.6 x 5 1-12 OEP-4...

  • Page 19: Dc Fan (Head Unit)

    P2.6 x 5 Ribbon sensor mounting plate Eccentric pins Harness Flexible flat cable Mechanical main CN302 CN303 EX-970 board unit assembly Thermal head 9. Attach the two DC fans in the reverse order of steps 1 to 8. 1-13 OEP-4...

  • Page 20: Pinch Roller

    Hole Thermal head Hole 12. Attach the pinch roller in the reverse order of steps 10 and 11. 13. Clean the pinch roller with alcohol. 14. Assemble this unit in the reverse order of steps 1 to 9. 1-14 OEP-4...

  • Page 21: Capstan Roller/Platen Roller

    21. Clean the capstan roller and platen roller with alcohol. Bearing 22. Assemble this unit in the reverse order of steps 1 to 10. Helical extension spring BVTT 2.6 x 5 Platen earth Paper lift lever plates Helical extension subassembly spring 1-15 OEP-4...

  • Page 22: Cam Gear (L)/Cam Gear (R)

    13. Remove the retaining ring, then remove the cam gear (L). Mode lever (R) subassembly Check that the bearing is attached to the shaft of the mode lever (L) subassembly. 1-16 OEP-4...
  • Page 23 (R). Cam (L) (Black) Outside Inside Imprinting Grease Groove Shaft of mode lever (L) subassembly Cam gear (L) Hole of chassis Cam (R) (White) Bearing Hole Outside Inside Imprinting E3.0 Grease Groove Mode lever (L) subassembly 1-17 OEP-4...
  • Page 24 21. Attach the cam gear (L) and cam gear (R) in the Shaft of mode lever (R) subassembly reverse order of steps 12 to 14 with the cam gear (L) and cam gear (R) secured state. 22. Assemble this unit in the reverse order of steps 1 to 11. 1-18 OEP-4...

  • Page 25: Interlock Switch

    The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful. SE-755 board TO MA-142G CN203 BVTT 2.6 x 5 Interlock plate 7. Attach the interlock switch in the reverse order of steps 1 to 6. 1-19 OEP-4...

  • Page 27: Electrical Alignment

    The voltage value of thermal head is adjusted. automatically. Increase the value: The voltage supply to the thermal head is increased and the print density becomes higher. Decrease the value: The voltage supply to the thermal head is decreased and the print density becomes lower. OEP-4...
  • Page 28 When carrying out this item, the temperature control of thermal head is not performed. To make the print, press the [PRINT] button of this unit. . STEP(V) . STEP(H) . COLOR BAR(H) . GRAY(C0h) . GRAY(80h) . GRAY(40h) . BLACK OEP-4...
  • Page 29 Not used The time (numeric value) is updated every 15 minutes. RBN INFO When the operating time is within 15 minutes, it is not The information of ribbon installed in this unit is reflected on the numeric value. displayed. OEP-4...

  • Page 30: Thermal Head Replacement Procedure

    It is recommended to perform the procedure Be sure to perform the following procedure when replacing with the top cover removed, which saves the time the thermal head. before the printing starts. (For the procedure of removing the top cover, refer to Section 1-3-1.) OEP-4...

  • Page 31: Density Check And Adjustment

    [CAPTURE] and [PRINT] buttons simultaneously. 2. Check that “INITIALIZED” is displayed on LCD. Even if the master reset is performed, the density adjustment value (HEAD V value), printing position adjustment value (P H SHIFT value) and LANGUAGE setting are not reset. OEP-4...

  • Page 32: Version Upgrade

    9. Select the item using the [&] and [*] buttons. . DM179AP.VUP: Select SY. . PNX179AP.VUP: Select VA. . Upgrade the two CPU’s at the same time: Select AUTO. (For details, refer to “Upgrading the two CPU’s at the same time”.) OEP-4...

  • Page 33: Restoration Of This Unit

    4. Turn on the power of this unit while pressing the switch on the MA-142G board (near the head harness at the center of the S1454 board). The progress status is displayed on the monitor. 5. Check that “END” is displayed on the monitor. OEP-4...

  • Page 35: Troubleshooting

    The description of each item in TROUBLE and SENSOR The remaining amount of ribbon loaded in this unit at the is as follows. time of error is displayed. TTL PRINT The total print count of this unit at the time of error is displayed. OEP-4...

  • Page 36: Saving Function To Memory Stick

    THRESH HL Threshold voltage H LEVEL REC ID H level voltage The ID number of the past error is displayed. The larger number represents the later error. L LEVEL The whole data can be sorted on Excel. L level voltage OEP-4...

  • Page 37: Error Code Table

    HEAD_PRINT_ The head cannot move from the print position on MA-142G board HOME_TIMEOUT to the home position and time-out occurs. 0x0e HEAD_FEED1_ The head cannot move from the paper pick HOME_TIMEOUT position to the home position and time-out occurs. OEP-4...
  • Page 38 0x63 PP_JAM_ERR “Paper exist” is detected with the timing of “No paper” in a jamming sensor during paper feed. 0x64 PP_JAM_ “No paper” is detected with the timing of “Paper MISSING_ERR exist” in a jamming sensor during paper feed. OEP-4...

  • Page 39: Operating Mode (Status)

    Install the head block properly. A ribbon rail is damaged. Replace the ribbon rail. A ribbon rail is out of position. Install the ribbon rail properly. A ribbon is not properly installed in the cartridge. Install the ribbon properly in the cartridge. OEP-4...
  • Page 40 A head block is not in the prescribed position. Replace the cam, joint gear, or gear. (A cam, joint gear, or gear is defective.) A feed guide assembly is damaged. Replace the feed guide assembly. OEP-4...
  • Page 41 (A cam, joint gear, or gear is defective.) The tension of a ribbon is not proper. Confirm the limiter (T) and (S) assemblies and replace them. Confirm that the supply lock torsion panel is out of position and install it properly. OEP-4...
  • Page 42 A stepping motor is out of order. Apply the tension of a belt again. (The tension of a belt is not proper.) A feed guide assembly is damaged. Replace the feed guide assembly. Dedicated paper is not used. Replace the paper used by dedicated paper. OEP-4...
  • Page 43 An eject flap is out of position and damaged. Replace the eject flap. in spite of paper removal. The SE-752 board is defective. Confirm CN111 on the SE-752 board, CN105 on the MEC-24G board, and the harness. OEP-4...

  • Page 45: Location And Functions Of Sensors, Motors, And Mechanical Parts

    Location and Functions of Sensors, Motors, and Mechanical Parts This section describes the location and functions of sensors, motors, and mechanical parts. Refer to Section 1 for how to remove (replace) parts. Index Item Page 4-1. Sensors and Motors 4-2. Mechanical Parts OEP-4...

  • Page 46: Sensors And Motors

    Head cooling fan In-unit cooling fan 4-2. Mechanical Parts Name Name Platen Eject roller Grip roller Ink ribbon Pinch roller Take-up limiter Thermal head Supply limiter Separation pad Ribbon guide Press roller Mode lever Load roller Cam gear OEP-4...
  • Page 47 In this separated in certain timing. The supply ribbon is locked case, fixed torque is applied to the take-up and supply and not pulled out. ribbons. Disturbance (load fluctuation) must not occur in paper. OEP-4...

  • Page 49: Circuit Description

    Section 5 Circuit Description 5-1. Outline of Operation 5-2. Outline of MA-142G Board The electric circuit configuration of OEP-4 (hereinafter The MA-142G board is mainly classified into two circuit referred to as this unit) can be mainly classified as follows: blocks.
  • Page 50 IC1103 always outputs a composite sync signal. IC1101. Nothing is output from IC1103 when an HD signal is Moreover, power is also supplied from CN201 to the MA- output. 142G board. OEP-4...

  • Page 51: Soc (Ic103) Block

    IC103, the gradation set in IC103 is operated and expanded to another image memory. An image is transferred during paper feeding of mechanical operation with the timing when data transfer time does not influence the print time. OEP-4...
  • Page 52 Communication interrupt between CPUs GIO5 INT5 Communication interrupt between CPUs GIO6 INT6 SIRCS (infrared remote controller) interrupt GIO7 GIO7 REMOTE2 input GIO8 DSR1n RS-232C DSR GIO9 RTS1n RS-232C RTS GIO10 CTS1n RS-232C CTS GIO11 GIO11 RS-232C DTR GIO12 GIO12 REMOTE2 BUSY output OEP-4...

  • Page 53: Printer-Dedicated Circuit (Ic301)

    Signal connection at each general-purpose I/O port of printer-dedicated circuit (IC301) Pin No. Pin Name Name Description PORT0 POSITION0 Head position 0 PORT1 POSITION1 Head position 1 PORT2 TAG_nSINT ICTAG I/O PORT3 PP_EJECT Paper eject PORT4 DOOR_SENS Front panel PORT5 LED_ON/nOFF Sensor LED on/off PORT6 TAG_CRERR ICTAG I/O OEP-4...
  • Page 54 Pin No. Pin Name Name Description DCM_OUT_0 HM_OUT0 Head motor control DCM_OUT_1 HM_OUT1 Head motor control DCM_OUT_2 RBN_OUT0 Ribbon motor control DCM_OUT_3 RBN_OUT1 Ribbon motor control DCM_OUT_4 Unused DCM_OUT_5 Unused DCM_OUT_6 BUZZER Buzzer DCM_OUT_7 Unused STM_OUT_0 PM_OUT0 Stepping motor control OEP-4...
  • Page 55 *2: For the specifications of a head, the data port number of is assigned from 1. Therefore, head data 0 on the IC side is connected to head data 1 on the head side, and head data 19 on the IC side is connected to head data 20 on the head side. OEP-4...

  • Page 56: Mechanical Control Block

    Thermal head temperature detection The voltage that was voltage-divided by the thermister and fixed resistors (R705, R706, and R707) installed in a thermal head is input to the A/D pin of a printer-dedicated circuit so as to detect a temperature. OEP-4...

  • Page 57: Key Input And Liquid-Crystal

    GND. It is shut down when this control line is opened. This control line is connected to the opening/closing sensor of a bottom plate using a connector (CN203). Power cannot be turned on when the bottom plate is opened. OEP-4...

  • Page 58: Mechanical Control Block

    The fan motor rotates when a temperature reaches more than the fixed temperature during print and in the standby state. CN804 +12V ROOM_FAN C841 C842 +3.3V MA-142G R854 Q803 R853 R855 Q802 EX-970 IC301 CN302 +12V HEAD_FAN 0 C205 C206 CN303 HEAD_FAN 1 R214 Q204 R213 R215 Q203 MEC-24G 5-10 OEP-4...
  • Page 59 R807 R806 IC205 CN203 RESET OUTA1 CW/CCW OUTA2 CLOCK OUTA1 OUTA2 OUTB1 OUTB2 SYNC OUTB1 OUTB2 SENSEA SENSEB TO IC301 99 pin IC207 R220 R222 R224 R226 IC703 C732 C204 C208 R229 R221 R223 R225 R227 MA-142G MEC-24G 5-11 OEP-4...
  • Page 60 The two motor drive circuits (IC202 and IC203) on the MEC-24G board are controlled to drive two motors using the control signal at pins 94 and 51 of IC301 on the MA-142G board. +12V IC301 1 (94) OUT1 4 (51) OUT2 SU-86 MA-142G +12V OUT1 OUT2 SU-87 MEC-24G 5-12 OEP-4...

  • Page 61: Sensor Detection Circuits

    Head down M print Head up Ribbon C cue-up and paper return Head down C print R114 Q102 R116 R113 R115 CN-803/MA-130 16 pin Q101 PH51 PH52 VDR51 VDR52 IC301 R111 R112 C113 C114 GND GND MA-142G MEC-24G SE-746 5-13 OEP-4...
  • Page 62 IC301, pin 132 on the MA-142G board H = Paper stack provided. ALARM (LED) lights. L = Paper stack not provided. R114 Q102 R116 R113 R115 CN-803/MA-130 16 pin Q101 C106 R111 IC301 PH111 VDR111 C111 C112 R106 C107 MA-142G MEC-24G SE-751 5-14 OEP-4...
  • Page 63 16 pin Q101 MA-142G +2.5V R714 PP_F_EDGE (IC301 174pin) SE-750/749 +2.5V R121 R715 C131 C121 PP_B_EDGE (IC301 87pin) Q131 D121 SE-754/753 +2.5V R716 RBN_MARK (IC301 43pin) SE-747/748 +2.5V R161 R717 C101 C161 PP_IN Q101 D161 (IC301 175pin) SE-751/762 5-15 OEP-4...
  • Page 64 16 pin Q101 MA-142G +2.5V R714 PP_F_EDGE (IC301 174pin) SE-750/749 +2.5V R121 R715 C131 C121 PP_B_EDGE (IC301 87pin) Q131 D121 SE-754/753 +2.5V R716 RBN_MARK (IC301 43pin) SE-747/748 +2.5V R161 R717 C101 C161 PP_IN Q101 D161 (IC301 175pin) SE-751/762 5-16 OEP-4...
  • Page 65 16 pin Q101 MA-142G +2.5V R714 PP_F_EDGE (IC301 174pin) SE-750/749 +2.5V R121 R715 C131 C121 PP_B_EDGE (IC301 87pin) Q131 D121 SE-754/753 +2.5V R716 RBN_MARK (IC301 43pin) SE-747/748 +2.5V R161 R717 C101 C161 PP_IN (IC301 175pin) Q101 D161 SE-751/762 5-17 OEP-4...
  • Page 66 16 pin Q101 MA-142G +2.5V R714 PP_F_EDGE (IC301 174pin) SE-750/749 +2.5V R121 R715 C131 C121 PP_B_EDGE (IC301 87pin) Q131 D121 SE-754/753 +2.5V R716 RBN_MARK (IC301 43pin) SE-747/748 +2.5V R161 R717 C101 C161 PP_IN Q101 D161 (IC301 175pin) SE-751/762 5-18 OEP-4...
  • Page 67 The power of this unit is turned off when a bottom plate is not installed. Level: CN207, pin 7 on the MA-142G board H = Power OFF L = Power ON S141 REMOTE ON/OFF R203 CN201 7pin C203 VDR141 R204 MA-142G SE-755 5-19 OEP-4...
  • Page 69 20 V AC range are suitable. (See Fig. A) To Exposed Metal Parts on Set 0.15 µ F 1.5 k Z voltmeter (5.25V) Earth Ground Fig A. Using an AC voltmeter to check AC leakage. OEP-4...
  • Page 70 Sony Corporation B&P Business Group Printer Div. OEP-4 (UC) E 2006. 3 22 Published by Sony Techno Create Corporation 9-879-989-11 ©2006...

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