LC-46XL1E. Adjustment Procedure - Sharp TV Service Manual (repair manual). Page 12

LC-46XL1E/RU, LC-52XL1E/RU

3 – 12

4. Tuner adjustment

Adjustment gradation values (IN) appear on page 7/13 of process adjustment, and adjustment initial values (offset value) appear on pages 8/13 and
9/13. 

For white balance adjustment, adjust the offset values on pages 8/13 and 9/13.

[Condition of the unit for inspection]

 Modulated light: MAX (+8)

[Adjustment reference device]

Minolta CA-210

[Adjustment]

Check that the values on page 7/13 of process adjustment are set as below. If not, change them accordingly.

1) Display the current adjustment status at point 6. (Page 8/13 of process adjustment)

The display for checking the adjustment status is toggled by pressing the “6” button on the remote control.

(Normal OSD display 

→ “6” → display for check (OSD disappears) → “6” →normal OSD display → . . . )

2) Read the value of the luminance meter.          x=0.272, y =0.277

3) Change MGAMMA R6/MGAMMA B6 (Adjustment offset value) on page 9/13 of process adjustment so that the values of the luminance meter

approach x=0.272 and y =0.277.

(Basically, G is not changed. If adjustment fails with R and B, change G. When G is lowered, the weaker of R and B must be fixed.)

4) Display the adjustment status of the current point 5. (Each time the “5” button on the remote control is pressed, the adjustment status check dis-

play is toggled.)

(Normal OSD display 

→ “5” → Check display (OSD disappears) → “5” →Normal OSD display → . . . )

Change M GAMMA R5/M GAMMA B5 (adjustment offset value) on page 9/13 of process adjustment so that the values of the luminance meter
approach x = 0.272 and y = 0.277.

5) Repeat step 4) for points 4, 3, 2, and 1.

[Adjustment reference standard value]

Adjustment spec 

± 0.004    Inspection spec ± 0.006 (point 1)

Adjustment spec 

± 0.002    Inspection spec ± 0.004 (Excluding the above-mentioned)

1

Setting

[Signal]

PAL RF signal

[Terminal]
TUNER

• Feed the RF signal (PAL colour bar) to TUNER.
• Make sure the PAL colour bar pattern (E-12) has the sync level of 7.3 

with the picture level.

2

Auto adjustment performance

Adjustment process
[PAL+TUNERMAIN] menu

Bring the cursor on [PAL+TUNER ADJ] and press [OK].
[PAL+TUNER ADJ OK] appears when finished.

MGAMMA POS 1

4

MGAMMA POS 2

10

MGAMMA POS 3

15

MGAMMA POS 4

19

MGAMMA POS 5

24

MGAMMA POS 6

29

㸡100% white

[E-12CH]