51GT-25 (serv.man2). - Part 1 - Text (1-11) - Sharp TV Service Manual (repair manual). Page 5

FASTTEXT

•SERVICE MODE FUNCTION

1. Connect a test pattern to the antenna terminal.
2. Tune the receiver to this signal.
3. Turn the receiver off using the mains switch.
4. Press the volume down and channel up buttons on the front of the receiver at the same time.
5. Keeping these buttons pressed, turn the mains on.
6. When the set starts up it will be in service mode.
7. Release the two buttons.

•

 Use the channel up and down buttons to move between the options.

•

 Use the volume control buttons to change the data.

•

 The data is stored automatically when the service mode is exited or at switch off.

•

 To exit the service mode, press the standby or menu button on the remote control.

To ensure correct operation of the AFT, this must be adjusted to 40.

-SERV-
AGC
AFT
H-SHIFT
V-SHIFT
V-AMPL
V- SLOP
S-CORR
Y-DLY
GAIN R
GAIN G
GAIN B
NVM

00

∼ 3F

00 

∼ 7F

00 

∼ 3F

00 

∼ 3F

00 

∼ 3F

00 

∼ 3F

00 

∼ 3F

00 

∼ 3F

00 

∼ 3F

00 

∼ 3F

00 

∼ 3F

00 

∼ FF

Indicates operative Service Mode
Auto Gain Control
Auto Frequency Control
Horizontal Shift
Vertical Shift
Vertical Amplitude
Vertical Symmetry
S Correction
Luminance/Chrominance Delay
Red Gain
Green Gain
Blue Gain
NVM Data Change

XX

○

○

○

○

○

○

○

○

○

○

XXXX

On Screen
  Display

Hexadecimal
  Adjustment
     Range