Sony KP-53S65 Service Manual page 49

5-6. P IN P SUB CONTRAST ADJUSTMENT
(PCON)
1. Receive the color-bar signal.
2. PICTURE : maximum
COLOR : minimum
BRIGHTNESS : minimum
3. Set to service mode.
4. Connect an oscilloscope between 9 pin of CN303 (A Board)
and ground.
5. Select " PCON " and adjust so that waveform level is
1.4 ±
0.00
Vp-p.
0.05
6. Write the data into memory.
MUTING n ENTER
White
+0.00
1.4V
–0.05
Black
MAIN SCREEN
Fig. 5-5
5-7. P IN P SUB HUE, SUB COLOR ADJUSTMENT
(IHUE, ICOL)
1. Receive the color-bar signal.
2. PICTURE : maximum
COLOR : center
BRIGHTNESS : center
3. Set to service mode.
4. Connect an oscilloscope between 5 pin of CN303 (A Board)
and ground.
5. Select " IHUE " and " ICOL " , adjust them to have VB1 = VB4
and VB2 = VB3 in the waveform levels.
6. Raise " ICOL " data 1 steps higher.
7. Write the data into memory.
MUTING n ENTER
VB1 VB2
Fig. 5-6
SECTION 5
CIRCUIT ADJUSTMENTS
White
+0.00
1.4V
–0.05
Black
PIP SCREEN
VB3 VB4
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