A Board Adjustments - Sony KV-29AL40 Service Manual

KV-29AL40/KV-29AL40A/KV-29AL40C
(5) Feature ID Map
5-2.

A BOARD ADJUSTMENTS

H. FREQUENCY ADJUSTMENT
1. Input a monoscope signal.
2. Set to Service adjustment Mode.
3. Connect a frequency counter to base of Q501
(TP-500 H. DRIVE).
4. Select the item of AFC, set to 3 level (free run).
5. Check H. Frequency for the 15735 ± 200 Hz. (NTSC) or
check H. Frequency for the 15650 ± 200 Hz. (Trinorma)
6. Select the item of AFC again, adjust the level "0".
7. Write into the memory by pressing
then
V. FREQUENCY ADJUSTMENT
1. Select video 1 with no signal input.
2. Set the conditions with standard setting.
3. Connect the frequency counter across TP-508 or CN501 VDY
(+) pin 6 connector and ground.
4. Check V. Frequency for the 60 ± 2 Hz (NTSC)
5. Check V. Frequency for the 50 ± 2 Hz (Trinorma).
SUB CONTRACT ADJUSTMENT (SCON)
1. Input a color-bar signal.
2. Select the red color.
3. Set to Service adjustment Mode.
4. Select the item DCOL to "0" level.
5. Set the conditions as follows.
PICTURE . . . . . . . . . . .
COLOR . . . . . . . . . . .
BRIGHT . . . . . . . . . . .
2 9 A L 4 0
1 (E)
2 2 9 A L 4 0 A (E)
3 2 9 A L 4 0 C (E)
.
MAX
MIN
CENTER
145 3 173 195 63
151 3 173 195 55
145 3 173 195 63
R ON
G ON
B ON
SERVICE
6. Connect an oscilloscope probe to C Board, CN301 Pin 5
(RED OUT).
7. Select RDRV with
8. Adjust with
9. Reset the item DCOL to "1" level.
10. Write the memory by pressing
11. Return the following back to normal after adjustment.
PICTURE . . . . . . . . . . . MAX
COLOR
BRIGHT
R ON
G ON
B ON
—
22 —
1 0 64
1 0 64
1 0 64
. . . . . . . . . . . ON (1)
. . . . . . . . . . . OFF (0)
. . . . . . . . . . . OFF (0)
1: ON
0: OFF
RON 1
and .
and for: 1.90 ± 0.05 Vp-p.
White
1.8 ± 0.05 Vp-p 1.90 ± 0.05 Vp-p
1.90±0.05 Vp-p
Black
then
. . . . . . . . . . . CENTER
. . . . . . . . . . . CENTER
. . . . . . . . . . . ON (1)
. . . . . . . . . . . ON (1)
. . . . . . . . . . . ON (1)
.