Sony PVM-A250 Service Manual
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Sony PVM-A250 Service Manual

Professional video monitor
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PROFESSIONAL VIDEO MONITOR
PVM-A250
SERVICE MANUAL
1st Edition (Revised 1)

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Summary of Contents for Sony PVM-A250

  • Page 1 PROFESSIONAL VIDEO MONITOR PVM-A250 SERVICE MANUAL 1st Edition (Revised 1)
  • Page 2 électrique, d’incendie ou de blessure n’effectuer que les réparations indiquées dans le mode d’emploi à moins d’être qualifi é pour en effectuer d’autres. Pour toute réparation faire appel à une personne compétente uniquement. PVM-A250...
  • Page 3 : PARALLEL REMOTE コネクター 上記のポートについては本書の指示に従ってください。 For safety, do not connect the connector for periph- eral device wiring that might have excessive volt- age to the following ports. connector SERIAL REMOTE connector PARALLEL REMOTE Follow the instructions for the above ports. 1 (P) PVM-A250...

  • Page 5: Table Of Contents

    Cleaning ............1-13 (E) Overall ................5-1 1-6. Lead-free Solder ............1-13 (E) 2. Circuit Description 2-1. Board Configuration ..........2-1 (E) 2-2. G2 Board ..............2-1 (E) 2-3. H1 Board ..............2-1 (E) 2-4. H2 Board ..............2-1 (E) 2-5. QBC Board ..............2-2 (E) 1 (E) PVM-A250...

  • Page 6: Manual Structure

    Manual Structure Purpose of this manual This manual is the Service Manual of the Professional Video Monitor PVM-A250. This manual describes the information on the premise of providing the block level service (such as service overview, circuit description, troubleshooting, spare parts and block diagrams).

  • Page 7: Service Overview

    Section 1 Service Overview 1-1. Appearance Figure 1-2. Board Location G2 board QBC board H2 board H1 board 1-1 (E) PVM-A250...

  • Page 8: Tighten Torque

    . PSW4 x 8 (main frame block and rear cover block): 1.50 ?0.10 N.m (15.29 ?1.01 kgf.cm) . PSW4 x 16: 1.50 ?0.10 N.m (15.29 ?1.01 kgf.cm) . 3 x 4: 0.40 ?0.10 N.m (4.07 ?1.01 kgf.cm) . NUT (M6 x 0.5): 0.40 ?0.10 N.m (4.07 ?1.01 kgf.cm) 1-2 (E) PVM-A250...

  • Page 9: Disassembly

    1-4-1. Rear Cover 1 Two screws (PSW4 x 16) 2 Handle 6 Screw (PSW4 x 8) 4 Screw 3 Clamper (PSW4 x 8) 8 Eleven screws (PSW4 x 8) Upper side 5 Stand block Conductive cushion 7 Stand block 1-3 (E) PVM-A250...
  • Page 10 9 Raise the rear cover in the direction of the arrow A. Upper side !- Remove the rear cover while Conductive cushion holding these portions. 0 Three hooks Upper side Conductive cushion 1-4 (E) PVM-A250...

  • Page 11: Pwm Fan (Left)

    1-4-2. PWM Fan (Left) . Remove the rear cover. (Refer to Section 1-4-1.) Serial No.7000001 to 7001869: PVM-A250 (SY) Serial No.7200001 to 7200148: PVM-A250 (CN) 1 Three nylon rivets 2 Conductive tape (TOP) 7 Two screws (BVTP3 x 8) 5 Two screws...

  • Page 12: G2 Board

    1-4-3. G2 Board . Remove the rear cover. (Refer to Section 1-4-1.) 4 G2 board 1 Two harnesses CN6401 3 Four screws (PSW3 x 6) 2 Harness CN6400 CN6001 5 Insulation sheet Upper side Conductive cushion 1-6 (E) PVM-A250...

  • Page 13: Pwm Fan (Right)

    . Remove the G2 board. (Refer to Section 1-4-3.) 5 Two screws (BVTP3 x 8) 3 Two screws (PSW3 x 6) 4 Fan bracket Label 6 PWM fan (right) 1 Clamper 2 Harness Upper side Conductive cushion CN7403 1-7 (E) PVM-A250...

  • Page 14: Bezel Assembly

    1-4-5. Bezel Assembly . Remove the rear cover. (Refer to Section 1-4-1.) Serial No.7000001 to 7001869: PVM-A250 (SY) Serial No.7200001 to 7200148: PVM-A250 (CN) 3 Two nylon rivets 4 Conductive tape (BTM) 5 Two harnesses 1 Clamper 8 Main frame...

  • Page 15: H1 Board

    1 Screw (BVTP3 x 10) (PSW4 x 8) 5 H1 board !- Encoder knob 0 Standby button 8 Six hooks 2 Stand bracket 6 Two hooks 9 Input keypad 7 Control keypad assembly assembly Conductive cushion Upper side 1-9 (E) PVM-A250...

  • Page 16: Speaker

    . Remove the rear cover. (Refer to Section 1-4-1.) 6 Conductive tape (SPEAKER) 7 Two screws (BVTP3 x 10) Serial No.7000001 to 7001869: PVM-A250 (SY) Serial No.7200001 to 7200148: PVM-A250 (CN) 8 Speaker holder 3 Two nylon rivets 9 Miniature speaker...

  • Page 17: H2 Board

    5 Two screws (BVTP3 x 10) 4 Two harnesses 9 H2 board 2 Screw (PSW4 x 8) CN004 3 Stand bracket 6 H2 bracket CN003 7 Screw Upper side (3 x 4) 8 Nut 1 USB cover Conductive cushion 1-11 (E) PVM-A250...

  • Page 18: Oled Module Assembly

    . Remove the PWM fan (right). (Refer to Section 1-4-4.) . Remove the bezel assembly. (Refer to Section 1-4-5.) 2 Three screws (B3 x 5) *1: Serial No.7000001 to 7001869: PVM-A250 (SY) 8 Main frame assembly Serial No.7200001 to 7200148: PVM-A250 (CN) 7 Five conductive...

  • Page 19: Periodic Replacement Parts And Cleaning

    . The ordinary soldering iron can be used but the iron tip has to be applied to the solder joint for a slightly longer time. The printed pattern (copper foil) may peel away if the heated tip is applied for too long, so be careful. 1-13 (E) PVM-A250...

  • Page 21: Circuit Description

    28 V using a step-down DC/DC converter and outputs it to the QBC board. 2-3. H1 Board The H1 board mounts a power switch, input selector button, function button, and rotary encoder. 2-4. H2 Board The H2 board mounts a headphone terminal and USB terminal (for function extension in future). 2-1 (E) PVM-A250...

  • Page 22: Qbc Board

    IC8000 performs the user control processing of contrast, brightness, chroma, and phase, the switching processing of white balance, gamma, and color space, and the superimposition of an on-screen tally. The image-adjusted signal is converted into a format in which an OLED module is driven and then output. 2-2 (E) PVM-A250...
  • Page 23 I2C1 HDMI conversion CPU_I2C1 CPU_HDMI_I2C_EN HDMI_EDID_DIR_OUT_EN_X IC001 IC002 I/O_EXP I/O_EXP IC4000 Level I2C0 CN4006 conversion CPU_I2C0 Auxiliary I/O for board adjustment SIO1 CN6200 Tool board CN001 MCPU_SIO1 Sensor Log output for debugging CN6201 SIO0 Tool board MCPU_SIO0 2-3 (E) PVM-A250...
  • Page 24 +2.5V_TC IC7613 +1.8V_TC IC7619 +5V_STB IC7617 +1.5V_STB IC7616 +1.2V_STB IC7601 +9V_AUD IC7002 +5.0V_VID IC7605 CN4007 +12.5V_B +3.3V_QBI IC7602 F7618 +1.8V_HD_A12 IC2001 +1.0V_TC IC7612 +1.5V_TC IC7614 IC8600 VSSWS F8600 Power for IC8603 VSS1DS F8602 OLED panel F8603 VSS2DS 2-4 (E) PVM-A250...
  • Page 25 CN4007 F8700 IC8701 F8702 VDDWS +28V_TC +28V_TC F8701 IC8700 F8703 VGMA +28V_TC VDD_DRV F8704 Power for OLED panel VOFS1 F8601 IC8602 F8801 F8804 VDDDS IC8801 F8805 F8800 F8806 F8802 VCATH IC8800 F8807 F8803 2-5 (E) PVM-A250...

  • Page 27: Troubleshooting

    OS used. 1. Start PC. 2. Click Start → Setting → Control panel → Network connection. 3. Right-click the Local Area Connection. A Local Area Connection Properties screen appears. Select internet protocol version 4 (TCP/IPv4). [Properties] button 3-1 (E) PVM-A250...

  • Page 28: Connection With Monitor

    3-1-3. Connection with Monitor 1. Start terminal software. 2. Set the connection destination to the IP address f a monitor and set the TCP port to 23. Set the IP address of a monitor. Set the TCP port to 23. 3-2 (E) PVM-A250...

  • Page 29: Reading The Register

    “Welcome to Dragon Term…” is displayed. (Connection is completed.) . When you enter the password, no characters are displayed on the screen. . For the login name and password, contact your local Sony Sales Office/Service Center. Enter the login name.

  • Page 30: Check Method And Remedy

    Replace the OLED module assem- bly. (Refer to Section 1-4-9.) . Confirm whether the supplied DC Out-of-DC IN range voltage is the prescribed voltage (12 V to 16 V). . Replace the G2 board. (Refer to Section 1-4-3.) 3-4 (E) PVM-A250...

  • Page 31: Led On A Qbc Board Lights

    . +5V_STB . +1.2V_STB 3. State in which D8400 was turned on A failure occurs in the power supply below. Replace the G2 board. . VDDWS . VGMA . VDD_DRV . +1.0V_TC . +1.5V_TC . +1.8V_TC . +3.3V_QBI 3-5 (E) PVM-A250...

  • Page 32: Led On A G2 Board Lights

    . D6228: 28 V output display (Green) . D6408: 12.5 V_A (1 channel in 2-channel 12.5 V) Output display (Green) . D6407: 12.5 V_B (1 channel in 2-channel 12.5 V) Output display (Green) . D6229: AC_OFF_DET output display and AC input monitoring (Red) 3-6 (E) PVM-A250...
  • Page 33 A secondary DC/DC converter is judged to be abnormal. Confirm the parts below and replace them as required. . F6400: Is F6400 not put into an open state? . Q6404 to Q6407: Is no problem found in the resistance value between terminals? (Are Q6404 to Q6407 not short-circuited?) . IC6401 3-7 (E) PVM-A250...

  • Page 34: System Does Not Start

    Are harnesses properly Connect the harnesses properly. connected? Are symptoms improved by Replace the G2 board. connecting the finished products (Refer to Section 1-4-3.) of a G2 board? Replace the OLED module assembly. (Refer to Section 1-4-9.) 3-8 (E) PVM-A250...

  • Page 35: Abnormality Is Found In Control Operation

    Connect the harnesses properly. connected? Replace the H1 board. Are symptoms improved by (Refer to Section 1-4-6.) parallel remote operation? Refer to the Instruction Manual for Replace the OLED module the parallel remote operation. assembly. (Refer to Section 1-4-9.) 3-9 (E) PVM-A250...

  • Page 37: Spare Parts

    Therefore, specified parts should be used in the case of な部品です。したがって，交換する時は必ず指定 replacement. の部品を使ってください。 2. Standardization of Parts 2. 部品の共通化 Some repair parts supplied by Sony differ from those ソニーから供給する補修用部品は，セットに使われて used for the unit. These are because of parts common- いるものと異なることがあります。 ality and improvement. これは部品の共通化，改良等によるものです。...

  • Page 38: Exploded Views

    Cover Block 4-2. Exploded Views Serial No. 7000001 to 7001869: PVM-A250 (SY) Serial No. 7200001 to 7200148: PVM-A250 (CN) BVTP 3 x 10 BVTP3 x 10 3 x 4 BVTP 3 x 10 BVTP 3 x 10 PVM-A250...
  • Page 39 4-480-127-01 s COVER, REAR 4-487-558-01 s NUT (M6X0.5) 4-488-286-01 s KNOB, ROTARY ENCODER 4-488-287-01 s BUTTON, STANDBY 4-531-594-01 s CONDUCTIVE TAPE (TOP) 4-531-595-01 s CONDUCTIVE TAPE (BTM) 4-533-877-01 s CONDUCTIVE TAPE (SPEAKER) 7-685-647-71 s SCREW +BVTP 3X10 TYPE2 IT-3 PVM-A250...
  • Page 40 Cover Block Serial No. 7001870 and higher: PVM-A250 (SY) Serial No. 7200149 and higher: PVM-A250 (CN) BVTP 3 x 10 BVTP3 x 10 3 x 4 BVTP 3 x 10 BVTP 3 x 10 PVM-A250...
  • Page 41 3-275-891-01 s COVER, USB 4-533-877-01 s CONDUCTIVE TAPE (SPEAKER) 4-098-147-41 s CLAMP 4-264-182-01 s HANDLE 4-480-127-02 s COVER, REAR 4-487-558-01 s NUT (M6X0.5) 4-488-286-01 s KNOB, ROTARY ENCODER 4-488-287-01 s BUTTON, STANDBY 7-685-647-71 s SCREW +BVTP 3X10 TYPE2 IT-3 PVM-A250...
  • Page 42 Main Frame Block Serial No. 7000001 to 7001869: PVM-A250 (SY) Serial No. 7200001 to 7200148: PVM-A250 (CN) PSW3 x 6 BVTP 3 x 8 3 x 6 BVTP 3 x 8 3 x 6 BVTP3 x 8 PSW3 x 6...
  • Page 43 2-580-600-01 s SCREW, +PSW M4X8 2-990-241-02 s HOLDER (A), PLUG 3-281-853-02 s SADDLE, LOCKING EDGE 4-098-147-41 s CLAMP 4-531-596-01 s CONDUCTIVE TAPE 4-532-322-01 s GASKET 7-682-546-09 s SCREW +B 3X5 7-682-947-01 s SCREW +PSW 3X6 7-685-646-79 s SCREW +BVTP 3X8 TYPE2 IT-3 PVM-A250...
  • Page 44 Main Frame Block Serial No. 7001870 and higher: PVM-A250 (SY) Serial No. 7200149 and higher: PVM-A250 (CN) PSW3 x 6 BVTP 3 x 8 3 x 6 BVTP 3 x 8 3 x 6 BVTP3 x 8 PSW3 x 6...
  • Page 45 2-580-595-01 s SCREW, +PSW M3X12 2-580-600-01 s SCREW, +PSW M4X8 2-990-241-02 s HOLDER (A), PLUG 3-281-853-02 s SADDLE, LOCKING EDGE 4-098-147-41 s CLAMP 4-532-322-01 s GASKET 7-682-546-09 s SCREW +B 3X5 7-682-947-01 s SCREW +PSW 3X6 7-685-646-79 s SCREW +BVTP 3X8 TYPE2 IT-3 PVM-A250...

  • Page 46: Packing Materials & Supplied Accessories

    1-791-041-33 s CORD SET, POWER (For J) 1-793-461-12 s PLUG, CONVERSION (3P-2P) (For J) 1-830-860-12 s AC POWER-SUPPLY CORD (For CN) 2-990-242-01 s HOLDER (B), PLUG 4-488-666-03 s CD-ROM OPERATING INSTRUCTIONS (PDF) (JAPANESE, ENGLISH, FRENCH, GERMAN, ITALIAN, SPANISH, SIMPLIFIED CHINESE, TRADITIONAL CHINESE, KOREAN) 4-10 PVM-A250...

  • Page 47: Block Diagrams

    HP AMP AU PROC IC7005 AUDIO SPEAKER AUDIO IC6400 POWER SUPPLY QBC BOARD CURRENT POWER LIMIT IC6601 IC6201 D6000 +28V T6201 HIGHT VOLTAGE LLC BRIDGE DUAL SYNCHRONOUS AC IN RECT CONVERTER +12.5V BUCK CONVERTER POWER DEVICE WITH OSC Overall PVM-A250...
  • Page 50 PVM-A250 (CN) Printed in Japan Sony Corporation PVM-A250 (SY) J, E 2014. 8 32 9-878-531-02 ©2013...

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