Focus; Method Of Setting The Service Adjustment Mode; White Balance Adjustments - Sony KV-20V50 Service Manual

3-3. FOCUS

Adjust FOCUS control for best picture.
Fig.10
3-4. SCREEN(G 2)
1. Input a dots pattarn.
2. Set the PIC, BRT controls at minimum and COLOR
control at normal.
3. Adjust BKG VRs so that voltages on the red, green
and blue cathodes are 170 V dc with an oscilloscope
as shown in Fig.11.
4. Observe the screen and adjust SCREEN (G 2)RV
702 to obtain the faintly visible background of dot
signal.
G N D
Fig.11
3-5. METHOD OF SETTING
ADJUSTMENT
SERVICE MODE PROCEDURE
1. Standby mode.(Power off)
Remote Commander. (Press each button within a
second.)
FOCUS
pedestal
THE SERVICE
MODE
T LODE
SERVICE ADJUSTMEN
Disp.
( k e r n ) data
3. The CRT displays the item Being adjusted.
4. Press i or m on the Remote Commander to select
the item.
5. Press /3J or 6 on the Remote Commander to
change the data.
6. Press -1 then -1 to write into
memory.
SERVICE ADJUSTMENT MODE MEMORY
I I
7. Turn set off and on to exit.

3-6. WHITE BALANCE ADJUSTMENTS

1. Input an entire white signal.
2. Set to service adjustment mode.
3. Set the PICTURE and BRIGHT to minimum.
4. Adjust with SBRT if necessary.
5. Select G CUT and B CUT withmandB.
6. Adjust withBandHfor
7. Set the PICTURE and BRIGHT to maximum.
8. Select GAMP and BAMP withHand@
9. Adjust withflandwfor
10. Write into the memory by pressingmlthen
IN
Item
the best white balance.
the best white balance.