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KDP-51WS550/57WS550/65WS550
G BOARD
3-3. +B MAX VOLTAGE CONFIRMATION
The following adjustments should always be performed when replacing
IC6503 R6590.
1. Supply 130VAC to variable autotransformer.
2. Receive dot signal pattern and set the PICTURE and BRIGHTNESS
settings to their minimum.
3. Confirm the voltage of TP +B 135V is less than 137.0Vdc.
4. If step 3 is not satisfied, replace IC6503 and repeat steps 1-3.
3-4. +B OVP CONFIRMATION
1. Turn on set.
2. Set input conditions.
3. Turn off set.
4. Separate R6809 (D Board) from +135.
5. Apply external 145 ± 1V DC to open end of R6809.
6. Turn on set.
7. Measure voltage at Pin + of CN5007 (D Board). Voltage should be
less than 0.8V.
Input Conditions
Input Voltage: 120VAC
Input Signal:
Dot pattern NTSC
Video Controls: PICTURE set to minimum
BRIGHTNESS set to minimum
Summary of Contents for KDP-51WS550 - 51" High Definition Projection Tv
Page 11: ... 11 KDP 51WS550 57WS550 65WS550 1 4 SERVICE POSITION 1 3 CHASSIS ASSEMBLY REMOVAL ...
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Page 29: ... 29 KDP 51WS550 57WS550 65WS550 2 11 1 ID MAP TABLE ...
Page 44: ... 44 KDP 51WS550 57WS550 65WS550 5 3 BLOCK DIAGRAMS VIDEO SIGNAL FLOW BLOCK DIAGRAM ...
Page 98: ... 98 KDP 51WS550 57WS550 65WS550 5 5 SEMICONDUCTORS ...
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