Download
Share
Print this page
ViewSonic VPW425 Service Manual
  1. Manuals
  2. Brands
  3. ViewSonic Manuals
  4. Plasma TV
  5. VPW425 - 42" Plasma TV
  6. Service manual
ViewSonic VPW425 Service Manual

ViewSonic VPW425 Service Manual

42” plasma tv monitor
Hide thumbs Also See for VPW425:

Advertisement

Quick Links

Download this manual See also: User Manual

Service Manual

ViewSonic VPW425
Model No. VLCDS22554-1W
42" Plasma TV Monitor
(VPW425-1_SM_598 - Rev. 1a – August 2002)
ViewSonic
381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583

Advertisement

loading

Related Manuals for ViewSonic VPW425

Summary of Contents for ViewSonic VPW425

  • Page 1: Service Manual

    Service Manual ViewSonic VPW425 Model No. VLCDS22554-1W 42” Plasma TV Monitor (VPW425-1_SM_598 - Rev. 1a – August 2002)  ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583...

  • Page 2: Revision History

    Further, ViewSonic reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or changes.
  • Page 3 Service Manual ViewSonic VPW425 Model No. VLCDS22554-1W 42” Plasma TV Monitor (VPW425-1_SM_598 - Rev. 1a – August 2002)  ViewSonic 381 Brea Canyon Road, Walnut, California 91789 USA - (800) 888-8583...
  • Page 4 Further, ViewSonic reserves the right to revise this publication and to make changes from time to time in the contents hereof without obligation of ViewSonic to notify any person of such revision or changes.
  • Page 5 3. EXPLODED VIEW..........................3-1 4. FACTORY & ELECTRONIC ADJUSTMENTS ................. 4-1 5. BLOCK DIAGRAM ..........................5-1 6. TROUBLESHOOTING FLOW CHART ....................6-1 7. PC BOARD ASSEMBLY VIEWS ......................7-1 8. MAJOR ELECTRONIC ASSEMBLY PARTS LIST................8-1 9. PACKING LIST............................. 9-1 VPW425-1 Service Manual...
  • Page 6 IMPORTANT SAFETY PRECAUTIONS VER1.0 1. Before returning an instrument to the customer, always make a safety check of the entire instrument, including, but not limited to, the following items. a. Be sure that no built-in protective devices are defective and/or have been defeated during servicing. (1) Protective shields are provided on this chassis to protect both the technician and the customer.

  • Page 7: Specifications

    IMPORTANT SAFETY PRECAUTIONS VER1.0 4. Hot Chassis Warning— — — — a. Some Monitor chassis are electrically connected directly to one conductor of the AC power cord and may be safely serviced without an isolation transformer only if the AC power plug is inserted so that the chassis is connected to the ground side of the AC power source.
  • Page 8 SPECIFICATION VER1.0 SCOPE: These specifications describe all the characteristics of the 42 inch color monitor. ELECTRICAL REQUIREMENTS: 2.1. Display panel: Specification a. Screen size Diagonal 42 inch b. Aspect ratio 16:9 wide c. Number of pixels 852(Horizontal, RGB Trio ) X 480(Vertical)pixels d.
  • Page 9 SPECIFICATION VER1.0 2.3.4 RGB Signal: a. Type Positive or Negative b. Polarity c. Amplitude RGB: 0.7Vp-p d. Frequency H: support to 31K~91KHz V: support to 50~85Hz 2.3.5 DVI Signal: a. Type Digital b. Polarity Positive or Negative c. Frequency H: support to 31K~63KHz V: support to 50~85Hz 2.3.6 Audio Signal: Analog 500mV rms /more than 22Kohm...
  • Page 10 SPECIFICATION VER1.0 2.3.9 RGB/DVI For VESA Standard: Vertical Horizontal Refresh Horizontal Vertical Mode No Resolution Sync Sync Dot rate Rate Frequency Frequency Polarity Polarity (Hz) (K Hz) (Hz) (TTL) (TTL) (MHz) 640(VGA)× × × × 480 31.5 59.94 25.175 640(VGA)× × × × 480 37.9 72.81 31.500...
  • Page 11 SPECIFICATION VER1.0 2.4. Display Performance Requirements: The data of display performance are measured based on the following. Conditions unless otherwise specified. 25± ± ± ± 5 ℃ ℃ ℃ ℃ a. Ambient temperature b. Warm up period 30 minutes Min. c.
  • Page 12 SPECIFICATION VER1.0 Width 1040mm 1040mm Height 648 mm 690mm Depth 95mm 375 mm 3.1. Package Dimensions: Width 1230 mm Height 960 mm Depth 470 mm 3.2. Weight: Net weight 79.4lbs/36 Kgs (w/o stand) 83.8lbs/ 38Kgs (w/ stand) Gross weight 115lbs/52 Kgs ENVIRONMENT: 4.1.
  • Page 13 SPECIFICATION VER1.0 RF Sensitivity (Peak) CH 2 ~ CH 13 30dB Max. CH 14 ~ CH 69 30dB Max. CATV CH A-5 ~ CH W+29 30dB Max. AFT Pull-In Range ± ± ± ± 0.6MHz Min. CH 2 ~ CH 13 ±...
  • Page 14 SPECIFICATION VER1.0 Drop Test 200mm max. Vibration Test Forward and backward 30 minutes 1000 c.p.m Right and left 30 minutes 1000 c.p.m Up and down 30 minutes 1000 c.p.m Power Management: Mode H-sync V-sync Video Power dissipation Normal Pulse Pulse Active Normal power Stand-by...
  • Page 15 SPECIFICATION VER1.0 APPENDIX A : Preset Timing Chart (Video) (Sync) Item Description: Total time Active display area including borders Active display area excluding borders Left/Top border Right/bottom border Blanking time Front porch Sync-width Back porch Mode No Resolution & Refresh Rate Pixel 25.175 31.5...
  • Page 16 SPECIFICATION(Preliminary) Mode No Resolution 1024 1024 1024 1024 1280 1280 1280 & 1024 1024 1024 Refresh Rate Pixel 78.75 94.5 157.5 25.175 25.175 Horizontal visible 1024 1024 1024 1024 1280 1280 1280 Dots Horizontal total 1344 1328 1312 1376 1688 1688 1728 Dots...

  • Page 17: Exploded View

    EXPLODED VIEW VER1.0...
  • Page 18 FACTORY ADJUSTMENT METHOD VER1.0 1. PANEL voltage adjustment The power voltage should be adjusted and checked when changing the panel or power board. POWER VOLTAGE ADJUST FOR SAMSUNG TTL PANEL VA VSC VS VR VSET POWER BOARD DIGITAL BOARD EXT INT CN01 VOLTAGE CHECK POINT CN01 SELECT "INT"...
  • Page 19 FACTORY ADJUSTMENT METHOD VER1.0 2. Color temperature adjustment Push the factory service key to into the adjustment mode. The following will appear: 5400ºk X=0.335 Y=0.343 GAIN Bias Use the AV key to select the color to adjust and or key to adjust the level. The required equipment is CA-100,Vp300.

  • Page 20: Block Diagram

    BLOCK DIAGRAM VER1.0 PDP Socket Diagram JA2_1 Audio Amplifier JP1_1 AV Module Pin[1:10] Board Ass'y Pin[1:32] Board(with JA1_1 Tuner) JP2_1 Pin[1:12] Assy Pin[1:32] LA03_1 Logic Board Ass'y Pin[1:31] Image Board Ass'y J1_1 PANEL Power Pin[1:31] Supply Ass'y (LVDS) J14_1 Pin[1:6] Interface Board- Y Ass'y JP4_1 (5V,SB DET )
  • Page 21 BLOCK DIAGRAM VER1.0 Image Board Socket Data Im age Board ←→ Panel Im age Board ←→ AV Module Board Im age Board ←→ AV Module Board Im age Board As s 'y Im age Board AV Module Board Content Im age Board AV Module Board Content J1 (4 0 P i n )
  • Page 22 BLOCK DIAGRAM VER1.0 Image Board Signal Block Diagram SDRAM (PAGE4) 6630/6730 VIDEO MAIN Video RGB IN RGB OUT Processor S-VIDEO TA8551CH (PAGE3) SWITCH SDRAM VIDEO 6630/6730 (PAGE12) (PAGE2) SUB Video Porcessor SCALE IC (PAGE5) LVDS YCBCR MULTIPLEX Converter C711/C713 TRANSMITTER SWITCH (PAGE14) SDRAM...

  • Page 23: Block Diagram

    BLOCK DIAGRAM VER1.0 Image board Power Block Diagram SB5V (USB5V, SB5V_M , SB5V_IO, SB5V_CPU) SB5V_V SB5V_VO R376 +9VT (+9V) DVI_5V +5VSB P5V_COLOR V33SB +24V P24V +5V1 USB3V (5V_OSD) (VDD33) VCCPLL VCCBF CON8009 +5VA V33P VIP711 (VDRAM ) V33TMP VDDM (VCC3_M ) VCC3 CON8011 5VDDA...
  • Page 24 BLOCK DIAGRAM VER1.0 PDP Sound Block Diagram ICS1 ICS2 S UB _ WOOFE R M UT E OUT P UT P AGE 2 FROM AV S EL E CT OR Q1/Q2 ICA1/ICA2 AV_ OUT PUT INP UT B UFFE R M UT E ICR1 ICA3...
  • Page 25 BLOCK DIAGRAM VER1.0 Tuner Signal Block Diagram PO WER B LO CK 7 80 9 9 V_ T IC201 NE555 IC241 SCL 2 FROM IM A GE BO ARD CPU SDA2 7 80 5 2 SC24 8 2 IC202 Q2 4 1 3 1V T V _ L O UT UP C 1 85 4 ACT...
  • Page 26 TROUBLE SHOOTING GUIDES VER1.0 NO POWER SET POWER ON AC Master Power Switch Board DPWB11398-1G--- Power Input Module LJ92-00579A Replace Power Input Module LJ92-00579A Panel Power Supply LJ44-00025A Replace Panel Power Supply LJ44-00025A...
  • Page 27 TROUBLE SHOOTING GUIDES VER1.0 No picture No picture AV Module Board (with Tuner) DPWB11372-1G-T- Replace AV Module Board (with Tuner) DPWB11372-1G-T- Image Board DPWB11393-1G--S Replace Image Board DPWB11393-1G--S PDP Panel Module VVEPP42SD001F-- Replace PDP Panel Module VVEPP42SD001F--...
  • Page 28 TROUBLE SHOOTING GUIDES VER1.0 Vertical Line failure Vertical Line Interface Board-Z LJ92-00568B Replace Interface Board-Z LJ92-00568B PDP Panel Module Aeesmbly VVEPP42SD001F-- Replace PDP Panel Module Aeesmbly VVEPP42SD001F--...

  • Page 29: Trouble Shooting Guides

    TROUBLE SHOOTING GUIDES VER1.0 Horizontal Line Failure Horizontal Line Interface Board-Y LJ92-00569B Replace Interface Board-Y LJ92-00569B Y Amp Board-Upper LJ92-00570A Y Amp Board-Lower LJ92-00571A Replace Y Amp Board- Upper LJ92-00570A Y Amp Board- Lower LJ92-00571A PDP Panel Module Assembly VVEPP42SD001F-- Replace PDP Panel Assembly VVEPP42SD001F--...
  • Page 30 TROUBLE SHOOTING GUIDES VER1.0 NO Remote Control SET POWER ON Remote Control Replace Replace Battery BRC- Front Button Control Board DPWB11372-1G-K- Replace Front Button Control Board DPWB11372-1G-K- Image Board DPWB11393-1G--S Replace Image Board DPWB11393-1G--S...
  • Page 31 TROUBLE SHOOTING GUIDES VER1.0 Front Button Failure SET POWER ON Front Button Control Board DPWB11372-1G-K- Replace Front Button Control Board DPWB11372-1G-K- Image Board DPWB11393-1G--S Replace Image Board DPWB11393-1G--S...
  • Page 32 P.C. BOARD TOP VIEW VER1.0 MODULE NAME PARTS NO. IMAGE BOARD ASS'Y DPWB11393-1G--S...
  • Page 33 P.C. BOARD TOP VIEW VER1.0 MODULE NAME PARTS NO. AC MASTER POWER SWITCH B/D ASS'Y DPWB11398-1G---...
  • Page 34 P.C. BOARD TOP VIEW VER1.0 MODULE NAME PARTS NO. AUDIO AMPLIFIER BOARD ASS'Y DPWB11372-1G-S-...
  • Page 35 P.C. BOARD TOP VIEW VER1.0 MODULE NAME PARTS NO. FRONT BUTTON CONTROL BOARD ASS'Y DPWB11372-1G-K-...
  • Page 36 P.C. BOARD TOP VIEW VER1.0 MODULE NAME PARTS NO. AV MODULE BOARD ASS'Y DPWB11372-1G-T-...
  • Page 37 P.C. BOARD TOP VIEW VER1.0 MODULE NAME PARTS NO. INTERFACE BOARD- Y A’SSY LJ92-00569B...
  • Page 38 P.C. BOARD TOP VIEW VER1.0 MODULE NAME PARTS NO. LOGIC BOARD ASS'Y LJ92-00573...
  • Page 39 P.C. BOARD TOP VIEW VER1.0 MODULE NAME PARTS NO. PANEL POWER SUPPLY ASS'Y LJ44-00025A...
  • Page 40 P.C. BOARD TOP VIEW VER1.0 MODULE NAME PARTS NO. POWER INPUT MODULE ASS'Y LJ92-00579A...
  • Page 41 P.C. BOARD TOP VIEW VER1.0 MODULE NAME PARTS NO. INTERFACE BOARD- X ASS'Y LJ92-00568B 7-10...
  • Page 42 P.C. BOARD TOP VIEW VER1.0 MODULE NAME PARTS NO. LOGIC E-BUFFER ASS'Y LJ92-00581A 7-11...
  • Page 43 P.C. BOARD TOP VIEW VER1.0 MODULE NAME PARTS NO. Y AMP BOARD-UPPER ASS'Y LJ92-00570A 7-12...
  • Page 44 P.C. BOARD TOP VIEW VER1.0 MODULE NAME PARTS NO. Y AMP BOARD-LOWER ASS'Y LJ92-00571A 7-13...
  • Page 45 P.C. BOARD TOP VIEW VER1.0 MODULE NAME PARTS NO. LOGIC F-BUFFER ASS'Y LJ92-00582A 7-14...
  • Page 46 P.C. BOARD TOP VIEW MODULE NAME PARTS NO. PDP PANEL MODULE ASS'Y VVEPP42SD001F-- 7-15...
  • Page 47 ELECTRONIC MODULES LIST VER1.0 Model Name: VPW425 Module Supplier Supplier's Quantit Sub-Con Name Sub-Con Location Projected Projected Curren Designator / Part # y Per MTBF Final Revisio Assemb n Level 1 Image Board Sampo DPWB11393-1G--S 2 AC Master Power Switch...

  • Page 48: Packing List

    PACKING LIST VER1.0 9-01...

This manual is also suitable for:

Vlcds22554-1w