Adjustment Of The Tv Electrical Circuitry - Sharp 37VT-26H Service Manual

ADJUSTMENT OF THE TV ELECTRICAL CIRCUITRY

1. Calling the service mode
Get the service test points (TP2002 and TP2003) 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.
Service mode
Item
DIRECT MODE
V-AMPLITUDE
V-LINEARITY
V-OUT PHASE
H-POSITION
BELL FILTER
R-Y BLACK OFFSET
B-Y BLACK OFFSET
Y-SUB CONTRAST
SUB COLOUR
SUB BRIGHT
SUB TINT
Note :
Item selectable by the CH '" keys and data by the VOL '" keys (effective on both the
remote controller and the set)
The numeric keys on the remote controller work as follows in the DIRECT mode only.
R CUT OFF
G CUT OFF
B CUT OFF
G DRIVE GAIN
B DRIVE GAIN
Notes :
In all the other modes, these keys are used to select channels.
In the DIRECT TUNING mode, these keys are used to enter data.
ADJUSTMENT PRECAUTIONS
Top line : Service mode item (See below)
Bottom line : Data (See below)
Display
→
V-AMP
V-LIN
V-POS
H-POS
BELL
R-Y
B-Y
CONT
COLOR
BRI
TINT
UP DOWN
1 4
2 5
3 6
Õ õ
7
8 0
Data Variable range
Adjustable in the DIRECT MODE
0 ~ 127 R CUT OFF
0 ~ 31 G CUT OFF
0 ~ 7 B CUT OFF
0 ~ 31 G DRIVE GAIN (0 ~ 255)
0 ~ 3 B DRIVE GAIN (0 ~ 255)
0 ~ 15
0 ~ 15
0 ~ 31
0 ~ 240
0 ~ 150
0 ~ 37
9
37VT-26H(GY)
Micon version display
(0 ~ 255)
(0 ~ 255)
(0 ~ 255)