Sony SDM-U27M90 Dismantling Information For Use
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Sony SDM-U27M90 Dismantling Information For Use

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Dismantling Information forUse
by ProfessionalRecyclers
ORIGINAL MANUAL ISSUE DATE: 5/2022
Model:
SDM-U27M90
LCD Digital Color Monitor
Conditions of Use:
9-888-878-41
(1) Please use this information only for the purpose of performing repair and recycling Sony products.
Using this information for any purpose other than the purpose described foregoing is forbidden.
(2) Do not copy, replicate, reproduce, alter, translate, transmit, sell, lease, or distribute this information
in whole or in part without the prior written permission of the author.
Revision of Information:
Sony Corporation
This information may be changed or updated at any time without any prior notice. Please confirm that
this information is up-to-date before using it.
© 2022. 5
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Summary of Contents for Sony SDM-U27M90

  • Page 1 Conditions of Use: 9-888-878-41 (1) Please use this information only for the purpose of performing repair and recycling Sony products. Using this information for any purpose other than the purpose described foregoing is forbidden. (2) Do not copy, replicate, reproduce, alter, translate, transmit, sell, lease, or distribute this information in whole or in part without the prior written permission of the author.
  • Page 2 MODEL LIST/REVISION HISTORY MODEL COLOR COMMANDER DEST. SDM-U27M90 White SDM-U27M90...

  • Page 3: Safety Note

    ! mark on the exploded views, and in the parts inverter circuit. (High voltage occurs at the inverter circuit at 650Vrms) list are critical for safe operation. Replace these components with Sony parts whose part numbers appear as shown in this manual or in 7) Always clean the LCD panel with a soft cloth material.
  • Page 4 7) Check the antenna terminals, metal trim, metalized knobs, screws and all other exposed metal parts for AC leakage. Check leakage test as described next. 8) For safety reasons, repairing the Power board and/or Inverter board is prohibited. SDM-U27M90...
  • Page 5 The circuit boards used in these models have been processed using Lead Free Solder. The boards are identified by the LF logo located close to the board designation. Figure 2 – Measuring network for Leakage Current Figure 5: LF logo on circuit board Figure 4: LF Logo SDM-U27M90...
  • Page 6 SAFETY NOTE The servicing of these boards requires special precautions. It is strongly recommended to use Lead Free Solder material in order to guarantee optimal quality of new solder joints. SDM-U27M90...

  • Page 7: Optional Equipment

    (6) Parts Tray for loose screws and small items 3 PREPARATION BEFORE REPAIRS Before you begin, unplug the AC power plug from the desk or wall outlet . Then simply place the monitor faced-down on top of a thick blanket, on a large/flat surface. SDM-U27M90...

  • Page 8: Service Position

    5. Remove all screws on the front Driver Board as picture shows (9 screws). bezel (13 screws). REF. No. PART No. DESCRIPTION REMARKS 5-042-480-01 SCREW M4x11 4 pcs 5-042-479-01 SCREW M3x3.7 5 pcs 5-042-497-01 SCREW M3*7.5 9 pcs 5-042-496-01 SCREW M3x5 13 pcs SDM-U27M90...
  • Page 9 1-1. How to disassemble stand Rear Cover cannot disassemble standing condition. REF. No. PART No. DESCRIPTION REMARKS 5-042-492-01 21_SO_U27_STAND_RISER 5-042-493-01 21_SO_U27_STAND_V-LEG Press VESA QR POM on Hold the stand riser and rise it to button of the rear cover. remove the stand. SDM-U27M90...
  • Page 10 DISASSEMBLY AND PARTS LIST 1-2. How to disassemble rear cover REF. No. PART No. DESCRIPTION REMARKS 1. Remove all screws on the Rear Cover (4 screws). 5-042-491-01 ASSY_21_SO-U27_REAR_COVER Rear cover 5-042-489-01 ASSY_21_SO-U27_BRACKET Main bracket 5-042-480-01 Screw M4 11 4 pcs SDM-U27M90...
  • Page 11 Remove 1 pc Rear Cover cannot be disassembled Be careful when removing the rear cover in the standing condition. because Key BD's FFC and illumination cable are connected. Do not pinch the cables when assembling the rear cover. Remove AL tape. SDM-U27M90...
  • Page 12 1. Remove the tapes on the FFC cables. 5-043-762-01 ACETATE_TAPE_30X40MM 1 pc 2. Remove the screws M3x3.7 (5 pcs). 5-042-479-01 Screw M3*3.7L 5 pcs Two tapes are attached. The aluminum tape (1) is at the top and the black tape (3) is at the bottom. SDM-U27M90...
  • Page 13 PART No. DESCRIPTION REMARKS 1-3-2. Procedure of removing FFC cable 1-015-579-11 FFC (dirver BD/BL) LB1 LB FFC 1-015-580-11 FFC (dirver BD/BL) LB2 LB FFC 1-015-578-11 LVDS FFC (MB -Panel) LVDS cable Open the connector cover. Remove the LVDS FFC. SDM-U27M90...
  • Page 14 1-015-578-11 LVDS FFC (MB -Panel) FFC for Main BD and 1-015-581-11 FFC (IF/dirver BD) control Driver BD 5-042-486-01 T_PAD_14_9_T2 Thermal pad 4 pcs 5-042-485-01 T-PAD _30*30*T2_K=5 Thermal pad 2 pcs 5-042-497-01 SCRW M3*7.5 9 pcs Remove the screws M3x7.5 (9 pcs). SDM-U27M90...
  • Page 15 1-015-578-11 LVDS FFC (MB -Panel) Printed Circuit 1-015-573-11 MOUNTED PWB (Driver Board) Driver board Board, incl. capacitors Printed Circuit 1-015-572-11 MOUNTED PWB A (MB) Main board Board, incl. capacitors Remove the LVDS FFC. Open connector cover. Driver board Main board SDM-U27M90...
  • Page 16 DISASSEMBLY AND PARTS LIST 1-5. How to disassemble front bezel REF. No. PART No. DESCRIPTION REMARKS 5-042-490-01 ASSY_21-SO-U27_BEZEL Bezel Liquid Crystal Display A-5049-008-A LCM ASSY with individual packing LCM 5-042-496-01 Screw M3L5 13 pcs Remove the screws M3x5 (13 pcs). SDM-U27M90...
  • Page 17 1-6. How to disassemble Key board and Power LED board REF. No. PART No. DESCRIPTION REMARKS 1. Remove the screws. 1-015-575-11 MOUNTED PWB FK Board (Key) Key board 1-015-574-11 MOUNTED PWB (Power LED Board) Power LED board 5-042-487-01 21_SO_U27_JOYSTICK Joystick cover 5-042-478-01 Screw M3*3.5 3 pcs SDM-U27M90...
  • Page 18 DISASSEMBLY AND PARTS LIST 1-6. How to disassemble Key board and Power LED board 1-6-1. Key board & LED board for service SONY PN Description Remarks SONY PN Description Remarks MOUNTED PWB MOUNTED PWB FK LED BD 1-015-574-11 1-015-575-11 KEY MODULE...
  • Page 19 DISASSEMBLY AND PARTS LIST 1-7. How to disassemble illumination LED board REF. No. PART No. DESCRIPTION REMARKS 1. Release hook to disassemble illumination LED board. A-5049-009-A MOUNTED PWB (LED_LEFT_RIGHT) Illumination LED 5-042-491-01 ASSY_21_SO-U27_REAR_COVER Rear cover * A-5049-009-A: Board and harness are assembled. SDM-U27M90...
  • Page 20 DISASSEMBLY AND PARTS LIST 1-8. MISCELLANEOUS REF. No. PART No. DESCRIPTION REMARKS 1-015-585-11 AC CORD -EU FOR CEI (except UK) region Cable 1-015-586-11 AC CORD -UK FOR CEI (UK) region Cable 1-015-582-11 ADAPTER FOR ALL region External Power Supply SDM-U27M90...

  • Page 21: Circuit Boards Location

    DIAGRAMS AND CHASSIS STRUCTURE 2-2. CIRCUIT BOARDS LOCATION Illumination LED board Illumination LED board Key board LED board Main board Driver board SDM-U27M90...
  • Page 22 English 2022EL08-Data Made in Japan 9-888-878-41 © 2022.5 Sony Corporation SDM-U27M90...