LC-10A3E (serv.man7) - Sharp TV Service Manual (repair manual). Page 10

If the power LED remains red and the power is not turned on, or if repair has been performed, enter the adjustment
mode to reset the lamp error.
For the resetting procedure, refer to " No power" in the "Trouble shooting Table" section.

t remote controller:

6-1. +B adjustment

Vary the “+B-ADJ” setting on Page 1 of the adjustment process so that the voltage at pin 49 of SC401 be 5.00
±0.02 V.
Note : Adjust precisely to 5.0 V because this level will be used as supply voltage reference.

6-2. Counter-bias adjustment

Vary the “COM BIAS” setting on Page 2 of the adjustment process so that the contrast be sharpest (black
looks most sinking). The adjustment guideline is around 114 for Model LC-10A3E.

6-3. TAMP adjustment

1) Receive the colour bar signal.
2) See if the "Y" reading on page 2 of the adjustment process is somewhere between BO and BA. If not, make

the "PAL TAMP" adjustment to get the "Y" reading in the range of BO thru BA.

(Adjustment process menu on-screen display on page 2)

0

1

2

3

4

5

6

7

8

9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26

2

C O M

B

I

A S

1

1

7

P A

L

2

7

T

A M P

T

A

P

M

H

A

B

T

A M P

L

B

0

T

V

H

-

P E A K

I

N G

3

R C U T O F

F

0

G C U T O F

F

0

B C U T O F

F

–

1

G 3

B

3

R

3

0

0

0

0

0

0

G 1

B

4

Y

0

0

0

0

B

5

0

1

2

3

4

5

6

7

8

9

10

11

12

13

Y Data (75% white )

6-4. White balance adjustment

Vary the “RCUTOFF” and “BCUTOFF” settings to achieve optimum white balance.
Note : For the “RCUTOFF” and “BCUTOFF” settings, keep the readings in the range of -10 to +10. If out of

this range, the user-adjustable range is reduced.