LC-20B2E (serv.man9) - Sharp TV Service Manual (repair manual). Page 9

There are three methods below.
1) Press the “Adjustment process key” on the remote control after turning on the power.
2) Pressing both the MENU key and the TV/VIDEO key on the main body, turn on the power. Then, press the

volume DOWN key and the tuning DOWN key at the same time.

3) Turn on the power with falling either KEY4 (pin (81) of microprocessor) or KEY5 (pin (82) of microprocessor) to “L”.
[Note] For the method 3), the ROM is initialized at the same time. Therefore, 3) must be executed, if IC2004 or

IC2001 is changed. For 1) or 2), the main body only enters the MAIN side adjustment process.

4) Entering the TUNER side adjustment process

MENU key on the main body 

→

 Cursor UP key (remote control) 

→

 Select the position shown in the figure below

and press the M key (remote control) within 1 second. 

→

 Enters the adjustment process.

MAIN side adjustment (Press the “M” key to move the cursor and press the volume UP/DOWN key to make an
adjustment.)
• Power supply voltage adjustment (+B 5V)
• Model setting
• Inch size setting
• COMMON BIAS adjustment of LCD module
• CUTOFF adjustment

TUNER side adjustment (Press the tuning UP/DOWN key to move the cursor and press the volume UP/DOWN
key to make an adjustment.)
• Horizontal size adjustment (LCD adjustments)
• Video adjustment (other adjustments)

Y delay
Subcontrast
Subcolour
Subbrightness
Tint offset
AGC gain start

The TUNER side adjustment is possible. However, it is recommended to replace EAROM (I2).

Black level

Contrast

Colour

: select

M: Back
E: End