LC-M3700 (serv.man7). (7) Adjustment procedures - Sharp TV Service Manual (repair manual). Page 3

[Actual adjustment]
Before entering the process adjustment mode, reset all the user settings.
(Execute Menu [Video Adjustment]-|[Reset].)

1. Analog adjustment
1) Voltage adjustment

Adjustment item

Adjustment condition

Adjusting method

1

3.3V adjustment

page2
+BAdj3.3V
(NTSC color bar received)

2

1.8V adjustment

page2
+BAdj1.8V

2) PAL signal adjustment

Adjustment item

Adjustment condition

Adjusting method

1

Signal input

1

Setting

2

MAIN PAL Y

Page3

gain adjustment

PAL Y GAIN

Connect a voltmeter to TP4 of the PC I/F unit and
adjust the voltage to 3.30±0.01V.

If 3.3V adjustment is completed, pressing the ENTER
key on the remote control with the "+BADJ1.8V" line
selected will adjust the voltage automatically.  If
"ERR" appears, adjust the voltage to 1.90V using pin
(1) of CN9 of the PC I/F unit.

Using a signal generator, feed PAL split field color
bars (containing 100% white and having color
saturation of 75%) to the video signal input terminal
of INPUT1 or INPUT2.

Set the color system is to PAL by selecting a PAL
source.

Using pin (1) of P802, adjust the gain to
0.70±0.025Vp-p.

TP4

TP4

TP4

P802

P802

P802

1

1

12

12

12