Panasonic CT27E13G - 27" COLOR TV, Service Manual

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A-BOARD TEST
POINT
27” &
32”VOLTAGE
36”VOLTAGE
+B2 TPD14 131.0 ± 2.0V 131.0±2.0V
SOUND C823 (+) 22.7 ± 1.0V 22.7 ± 1.0V
STB12V C827 (+) 12.8 ± 1.0 V 12.8 ± 1.0 V
220V TPA14 217 ± 10 V 213 ± 10 V
VERTICAL TPD8
27.4 ± 1.5V 27.7 ± 1.5V
9V IC551 pin 3 9.0 ± 0.5V 9.0 ± 0.5V
5V IC552 pin 3 5.0 ± 0.5V 5.0 ± 0.5V
3.3V IC005 pin 2 3.3 ± 0.3V 3.3 ± 0.3V
EHT CRT anode 29.25 ±
1.25kV
31.25 ± 1.25kV
HEATER JK351 H-
GND 6.0 ± 0.24V 6.0 ± 0.24V
High voltage check
1. Select an active TV channel and confirm that horizontal is in sync.
2. Adjust BRIGHTNESS and CONTRAST using PICTURE icon menu
so video just disappears.
3. Using a high voltage meter confirm that the high voltage is 29.25 ±
1.25kV for 27” and 32” models and 31.25 ± 1.25kV for 36” models.
11. Service adjustments (mechanical controls)
11.1. Dynamic convergence adjustment (for 36” models only)
YH Adjustment / (VR1 for vertical dynamic convergence)
1. Apply a crosshatch pattern.
2. Adjust contrast and brightness customer controls to obtain a
correct picture.
3. With a driver Adjust VR1 (located in deflection yoke board to
obtain a proper convergence at left and right side of the screen.
VR1 adjustment (YH)
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