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SPECIFICATIONS
Power Source :
Power Consumption :
Screen Size :
Horizontal Resolution :
Video Input :
Video Output :
Horizontal Scanning Frequency :
Vertical Scanning Frequency :
Sweep Linearity :
Ambient Operating Humidity :
Ambient Operating Temperature :
Dimensions :
Weight :
Weight and dimensions shown are approximate.
Specifications are subject to change without notice.
OPTIONAL ACCESSORY
Rack Mount Bracket ............................................. WV-Q29E
PO WE R
ON
OFF
Vid eo Mo nit
or W V- BM
V HO LD
BR IGH T
CO NT RA ST
220-240 V AC, 50 Hz
Approx. 28 W
245 mm (9-5/8'') diagonal tube size, 90° deflection.
220 mm (8-11/16'') diagonal actual visual size.
800 TV lines at centre
1.0 V[p-p] composite/75 Ω, BNC with Auto Termination
Looped through video input, BNC
15.625 kHz
50 Hz
Horizontal;
Less than 5 %
Vertical;
Less than 5 %
Less than 90 %
–10°C - +50°C (14°F - 122°F)
221 (W) x 220 (H) x 262 (D) mm [8-11/16'' (W) x 8-11/16 (H) x 10-5/16'']
5.2 kg (11.5 lbs.)
C 2 0 0 0 M a t s u s h i t a C o m m u n i c a t i o n I n d u s t r i a l C o . , L t d .
A l l r i g h t s r e s e r v e d . U n a u t h o r i z e d c o p y i n g a n d
d i s t r i b u t i o n i s a v i o l a t i o n o f l a w .
WV-BM990
9 9 0
ORDER NO. AVS0004254C8
Video Monitor

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Summary of Contents for Panasonic WV-BM990

  • Page 1 ORDER NO. AVS0004254C8 Video Monitor WV-BM990 PO WE R Vid eo Mo nit 9 9 0 or W V- BM V HO LD BR IGH T CO NT RA ST SPECIFICATIONS Power Source : 220-240 V AC, 50 Hz Power Consumption : Approx.
  • Page 2 Y WARNING This service information is designed for experienced repair technicians only and is not designed for use by the general public. It does not contain warnings or cautions to advise non-technical individuals of potential dangers in attempting to service a product. Products powered by electricity should be serviced or repaired only by experienced professional technicians.
  • Page 3: Table Of Contents

    CONTENTS Major Operating Controls and Their Functions ..........1 Adjustment Procedure .
  • Page 4: Major Operating Controls And Their Functions

    MAJOR OPERATING CONTROLS AND THEIR FUNCTIONS Front View Rear View VIDEO IN VIDEO OUT POWER Video Monitor WV-BM V.HOLD BRIGHT CONTRAST q Power Switch (POWER, ON/OFF) t Contrast Control (CONTRAST) This is a push-push type switch which turns the power of Adjusts the picture contrast.
  • Page 5: Adjustment Procedure

    ADJUSTMENT PROCEDURE Connect the coaxial cable between Video Input Connector 1. Test Equipments Required of the WV-BM990 and Video Output Connector of Video Signal Generator. The following Test Equipments are required for adjustment of the Video Monitor WV-BM990. 3.2. Setting Up...
  • Page 6 Adjust the Centering Magnets so that the full Horizontal Loosen Deflection Coil Holding Screw. Width and full Vertical Height become the same Centering Magnets overscanning rate. Repeat adjusting VR408, VR412 and the Centering Magnets until satisfactory. (6). Focus Adjustment Adjust: VR601 (FOCUS) CRT Board Observe:...
  • Page 7: Location Of Test Points And Adjusting Controls

    LOCATION OF TEST POINTS AND ADJUSTING CONTROLS MAIN BOARD (COMPONENT SIDE) FRONT SIDE VR301 VR302 VR401 (CONTRAST) (BRIGHT) (V-HOLD) SW801 (POWER SWITCH) VR412 (V.LINE) VR408 (V.SIZE) VR515 (H.PRESET) VR501 (H-HOLD) H– V– CRT BOARD L501(H.SIZE) (COMPONENT SIDE) CN501 CN601 CN501 VR601 (FOCUS) CN302...
  • Page 8: Schematic Diagram

    SCHEMATIC DIAGRAM MAIN BOARD CRT BOARD VR515 H.PRESET OPEN VR301 CONTRAST V101 Q303 Q301 Q304 Q302 VR501 H-HOLD 5230 9311 OPEN OPEN 250V Q309 CN302 VIDEO INPUT SHORT CONNECTOR VR302 OPEN Q308 BRIGHT 2260 Q305 OPEN Q307 Q306 IC501 VR601 VR401 FOCUS V-HOLD...
  • Page 9: Conductor View

    CONDUCTOR VIEW CRT BOARD MAIN BOARD MAIN BOARD (Component Side View) (Pattern Side View) (Component Side View) (Pattern Side View) < INDEX > < VOLTAGE > < WAVEFORM > Note: < INDEX > The value indicated in the schematic diagram should be read as follows: MAIN BOARD MAIN BOARD MAIN BOARD...
  • Page 10: Exploded View

    Binding Head Tapping Screws XTB3+10JFN Binding Head Tapping Screws XYA4+BA20FX Binding Head Tapping Screw and Washer Assy TUC4C0198C Washers PCB2 PACKAGING M41, M42 V101 PT801 E101 PCB1 Vide WV-BM990 o Mon itor V id M on ito r W V- – 7 –...
  • Page 11: Replacement Parts List

    TXAVB1BM990P CRT Assy PCB1 (RTL) NP4CH0030231 Printed Circuit Board Assy PT801 TLP4C60262S Power Transformer IC501 UPC1379C E101 TSX4C7119H AC Power Cord for WV-BM990/B IC801 M5237L TSX4C7118H AC Power Cord for WV-BM990/G Q301,302 2SD636-QRS Transistor TKE4C5601C Front Cover Q303-306 2SB641QRS Transistor...
  • Page 12 REF. NO. PART NO. DESCRIPTION REF. NO. PART NO. DESCRIPTION R322 ERDS2TJ122 Carbon 1.2K ohms 1/4W R808 ERC12AGK394D Solid 390K ohms 1/2W R323 R0S2TKF2260K Metal 226 ohms 1/4W VR301 VUE2AF20B13C Variable Resistor 1K ohms R324 ERDS2TJ820 Carbon 82 ohms 1/4W VR302 VUE2AF20B13C Variable Resistor...
  • Page 13 TUC4C0043-10 Heat Sink for Q801 TUC4C0153-4C Heat Sink Y V8QA5383AN Operating Insturactions TUC4C0108C Heat Sink for Q502 TQE8548-1 FUN Bag XZB48X57C05A Polyethylene Bag TQE8593 Polyethylene Bag TXAPD1BM990 Packing Cushion V35A5319A1-B Packaging for WV-BM990/B V35A5319A1-G Packaging for WV-BM990/G – 10 –...
  • Page 14 Printed in Japan C-756 N N 5, 7, 23...