Sony KV-27V40 service manual Board Adjustments, Frequency Adjustment, SUB Contract Adjustment Scon

Models: KV-27V40

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KV-27V40 / 27V45 / 27V65 / 29VL40 / 29VL65A / 29VL65C / 29VL85 / 29VL95

(5) Feature ID Map

 

KV-

DESTINATION

ID-0

ID-1

ID-2

ID-3

ID-4

ID-5

ID-6

ID-7

 

 

 

 

 

 

 

 

 

 

 

1

2 7 V 4 0

(US)

153

19

173

194

31

1

0

64

2

2 7 V 4 0

(CND)

129

19

173

194

31

1

0

64

3

2 7 V 4 5

(US)

153

23

173

194

31

1

1

64

4

2 7 V 4 5

(CND)

129

23

173

194

31

1

1

64

5

2 7 V 6 5

(US)

153

23

175

194

31

1

7

64

6

2 7 V 6 5

(CND)

129

23

175

194

31

1

7

64

7

2 9 V L 4 0

(E)

145

19

173

194

63

1

0

64

8

2 9 V L 6 5 A

(E)

151

23

175

195

55

1

7

64

9

2 9 V L 6 5 C

(E)

145

23

175

194

63

1

7

64

10

2 9 V L 8 5

(E)

145

23

173

194

63

1

1

64

11

2 9 V L 9 5

(E)

145

23

175

194

63

1

7

64

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

MAX

COLOR

MIN

BRIGHT

CENTER

R ON

ON (1)

G ON

OFF (0)

B ON

OFF (0)

1: ON

0: OFF

SERVICE RON 1

6.Connect an oscilloscope probe to C Board, CN1702 Pin 5 (R OUT).

7.Select RDRV with and .

8.Adjust with and for: 1.90 ± 0.05 Vp-p.

Whiten

1.8 ± 0.05 Vp-p

1.90 ± 0.05 Vp-p

n

Black

9.Reset the item DCOL to "1" level.

10.Write the memory by pressing then .

11.Return the following back to normal after adjustment.

PICTURE

MAX

COLOR

CENTER

BRIGHT

CENTER

R ON

ON (1)

G ON

ON (1)

B ON

ON (1)

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Image 32
Sony KV-27V40 Board Adjustments, Frequency Adjustment, SUB Contract Adjustment Scon, Picture MAX Color MIN Bright Center