Read Sony KV-27S42 Service Manual online
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KV-27S42/27S46/27S66/29AL42/29AL42C/29AL66/
29AL66C/29SL42/29SL42C/29SL46/29XL42M
29AL66C/29SL42/29SL42C/29SL46/29XL42M
Screen-Corner Convergence
1. Affix a permalloy assembly corresponding to the
misconverged areas.
b
a
c
d
a
b
d
a-d: screen-corner
misconvergence
c
3-3. FOCUS
1. Adjust FOCUS control for best picture.
FOCUS
SCREEN
(FV)
(G2)
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.
green, and blue cathodes are 170 VDC.
Pedestal
170 VDC
Ground
4. Observe the screen and adjust SCREEN (G2) VR in FBT
to obtain the faintly visible background of dot signal.
3-5. METHOD OF SETTING THE SERVICE
ADJUSTMENT MODE
Service Mode Procedure
1. Standby mode (power off).
2.
Display
Channel 5
Sound volume
Power
+
on the Remote Commander (press each button within a
second).
second).
Service Adjustment Mode In
1. The CRT displays the item being adjusted.
SERVICE HSIZ 0
Disp.
(Item)
Item
Data
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
to save into the memory.
Service Adjustment Mode Memory
Turn set off then on to exit service adjustment mode.
SERVICE WRITE
Green
Red
MUTING
ENTER
3-6. WHITE BALANCE ADJUSTMENTS
1. Input an entire white signal with burst.
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
and
.
7. Adjust with
and
for the best white balance.
8. Set PICTURE and BRIGHTNESS to maximum.
9. Select GDRV and BDRV with
and
.
10. Adjust with
and
for the best white balance.
11. Reset DCOL to “1”.
12. To write into memory, press
then
.
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