Read Sony KV-G21L3 Service Manual online
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KV-G21L3
RM-883
3-3. FOCUS ADJUSTMENT
Adjust FOCUS control on the flyback transformer for the best
focus.
Note: Screen VR is not use.
SERVICE
MUTING
1 F
DATA
RDR
Adjustment Item
09
Item number
WRITE
1 F
RDR
09
0
Executes the writing
a. AN ITEM OF ADJUSTMENT
b. METHOD OF CANCELLATION FROM SERVICE
MODE
Set the standby condition (Press POWER button on the
commander) and then press POWER button again, hereupon it
becomes TV mode.
c. METHOD OF WRITE FOR MEMORY
1) Set to Service Mode.
2) Press 1 (UP) and 4 (DOWN) to select the item of
adjustments.
3) Press [MUTING] button and it will indicate WRITE on screen.
4) Press - button to write into memory.
d. MEMORY WRITE CONFIRMATION METHOD
1) After adjustment, pull out the plug from AC outlet, and then
plug into AC outlet again.
2) Turn the power switch ON and set to Service Mode.
3) Call the adjusted items again to confirm adjustments were made.
Item
number
number
Note
Adjustment
item
item
Initial DATA
09
RDR
25
WHITE POINT R
0A
GDR
20
WHITE POINT G
0B
BDR
20
WHITE POINT B
3-4. G2 (SCREEN) AND WHITE BALANCE
ADJUSTMENTS
1. G2 (SCREEN) ADJUSTMENT (RV701)
1) Set the PICTURE and BRIGHTNESS to normal.
2) Put to VIDEO input mode without signals.
3) Connect R, G and B of the C board cathode to the oscilloscope.
4) Adjust G2 (RV701) volume to the value below.
2. WHITE BALANCE ADJUSTMENTS
1) Set to Service Mode.
2) Input an entire white signal.
3) Set the PICTURE to maximum.
4) Select RDR(09) with 1 and 4 , and then set the level to 25
with 3 and 6 .
5) Select GDR(0A) and BDR(0B) with 1 and 4 and adjust the
level with 3 and 6 for the best white balance.
6) Write into the memory by pressing [MUTING] then - .
0 V
177 ± 2 V DC
FOCUS
SCREEN
(NOT USED)
(NOT USED)
FLYBACK TRANSFORMER (T851)
177±2V
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