Focus Adjustment; G2 (Screen) And White Balance Adjustments - Sony Trinitron KV-PF14DK7 Service Manual

3-3. FOCUS ADJUSTMENT

Adjust FOCUS control on the flyback transformer for the best
focus.
FLYBACK TRANSFORMER (T503)
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3-4. G2 (SCREEN) AND WHITE BALANCE
1. G2 (SCREEN) ADJUSTMENT
1) Set the PICTURE to normal.
2) Put to VIDEO input mode without signals.
3) Connect R, G and B of the C3 board cathode to the oscillo-
4) Adjust BRIGHTNESS to obtain the cathode voltage to the value
5) Adjust G2 (Screen) on FBT until picture shows the point
FOCUS
SCREEN
2. WHITE BALANCE ADJUSTMENT
1) Set to Service Mode (Refer Section 4-1: ADJUSTMENTS
2) Input white raster signal.
3) Set the PICTURE to minimum.
4) Select GCT (WHB 4) and BCT (WHB 5) with
5) Set the PICTURE to maximum.
6) Select GDR (WHB 1) and BDR (WHB 2) with
7) Write into the memory by pressing
3. SUB BRIGHT ADJUSTMENT
1) Set to service mode.
2) Input a staircase signal of black to white from the pattern
3) BRIGHTNESS .... 50%.
4) Select SBR (WHB7) with
– 25 –
KV-PF14DK7/PF14L70/PF14M40/PF14M70
KV-PF14P10/PF14P70/PF14Q70
ADJUSTMENTS
scope.
below.
before cut-off.
165 V ±2(VDC)
WITH COMMANDER).
[3] [6]
adjust the level with and
[3] [6]
adjust the level with and
generator.
PICTURE ............ MINIMUM
[1]
and
[3] [6]
level with and so that the second stripe from the right is
dimly lit.
White
second from the right
Black
RM-952
0 V
[1] [4]
and , and
for the best white balance.
[1] [4]
and , and
for the best white balance.
[MUTING] [0]
then .
[4]
, and adjust SBR (WHB7)