Focus; Screen (G2); Method Of Setting The Service Adjustment Mode; White Balance Adjustments - Sony TRINITRON KV-27V42 Service Manual

KV-27V42/27V66/29SL42K/29SL42T/29VL42T/29XL42T
Screen-Corner Convergence
1. Affix a permalloy assembly corresponding to the
misconverged areas.
a
a-d: screen-corner
misconvergence
c

3-3. FOCUS

1. Adjust FOCUS control for best picture.

3-4. SCREEN (G2)

1. Input a dots pattern.
2. Set the PICTURE and BRIGHTNESS controls at minimum
and COLOR control at normal.
3. Adjust SBRT, GCUT, BCUT in service mode with an
oscilloscope as shown below so that voltages on the red,
green, and blue cathodes are 170 VDC.
Ground
4. Observe the screen and adjust SCREEN (G2) VR on the
FBT to obtain the faintly visible background of dot signal.
a
b
b
c
d
d
FOCUS
(FV)
SCREEN
(G2)
170 VDC Pedestal
3-5. METHOD OF SETTING THE SERVICE
ADJUSTMENT MODE
Service Mode Procedure
1. Standby mode (power off).
2.
Channel 5
Display
on the Remote Commander (press each button within a
second).
Activating Service Adjustment Mode
1. The CRT displays the item being adjusted.
SERVICE
2. Press or on the Remote Commander to select the
item.
3. Press or on the Remote Commander to change the
data.
4. Press then
Service Adjustment Mode Memory
SERVICE WRITE
Turn set off then on to exit service adjustment mode.

3-6. WHITE BALANCE ADJUSTMENTS

1. Input an entire white signal.
2. Set to Service Adjustment Mode.
3. Set DCOL to "0".
4. Set the PICTURE and BRIGHTNESS to minimum.
5. Adjust with SBRT if necessary.
6. Select GCUT and BCUT with
7. Adjust with and
8. Set PICTURE and BRIGHTNESS to maximum.
9. Select GDRV and BDRV with
10. Adjust with and
11. Reset DCOL to "1".
12. To write into memory, press
— 16 —
+
Sound volume Power ON
Disp. Item
(Item) Data
HSIZ 0
to save into the memory.
MUTING
Green
ENTER Red
and .
for the best white balance.
and .
for the best white balance.
then .