Sharp VT-G14 - Adjustment of the Tv Electrical Circuitry

10
VT-G14
VT-G21
ADJUSTMENT OF THE TV ELECTRICAL CIRCUITRY
ADJUSTMENT PRECAUTIONS
1. Calling the service mode
Get the service test points (TP1002 and TP1003) of the set short-circuited.
2. Getting out of the service mode
Get the above service test points open.
3. On-screen display in the service mode
A service mode item and its data appear in two lines
at the lower left on the screen.
Top line : Service mode item (See below)
Bottom line : Data (See below)
Service mode
Item Display Data Variable range
DIRECT MODE DIRCT Adjustable in the DIRECT MODE
V-AMPLITUDE V-AMP 0 ~ 127 R CUT OFF (0 ~ 255)
V-LINEARITY V-LIN 0 ~ 31 G CUT OFF (0 ~ 255)
V-OUT PHASE V-POS 0 ~ 7 B CUT OFF (0 ~ 255)
H-POSITION H-POS 0 ~ 31 G DRIVE GAIN (0 ~ 255)
BELL FILTER BELL 0 ~ 3 B DRIVE GAIN (0 ~ 255)
R-Y BLACK OFFSET R-Y 0 ~ 15
B-Y BLACK OFFSET B-Y 0 ~ 15
Y-SUB CONTRAST CONT 0 ~ 31
SUB COLOUR COLOR 0 ~ 240
SUB BRIGHT BRI 0 ~ 150
SUB TINT TINT 0 ~ 37
`NICAM D/K N-D/K 0 ~ 1
`IF INT/EXT IF-IN 0 ~ 1
`AGC GAIN AGCGA 0 ~ 31
`AGC OFF AGCOF 0 ~ 1
`FM SOUND ID FMID 0 ~ 3
`AUTO MUTE AMUTE 0 ~ 1
`NICAM LOW ERROR LIMIT NERRL 0 ~ 255
`NICAM UP ERROR LIMIT NERRU 0 ~ 255
`NICAM OUT LEVEL B/G B/G 0 ~ 31
`NICAM OUT LEVEL I I 0 ~ 31
`NICAM OUT LEVEL D/K D/K 0 ~ 31
`NICAM OUT LEVEL M M 0 ~ 31
`FM OUTPUT LEVEL FM 0 ~ 31
Note :
1) Item selectable by the CH '" buttons and data by the VOL '" buttons (effective on both
the remote controller and the set)
2) `This item is not used with the VT-G14 and VT-G21 (but displayed on the screen).