Sharp VT-3448X, Service Manual

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Item-by-item control in the service mode
DIRECT mode (forced B/W)
DIRECT mode + mode (drive forced center)
SUB-BRIGHT
Initial value
CUTOFF 0 data resumed when any of the
keys on the remote controller is pressed)
R-Y Black Offset
B-Y Black Offset
CONTRAST MAX (USER-CONTROL)
BRIGHT MAX (USER-CONTROL)
COLOUR
CENTER (USER-CONTROL)
R-MONITOR SW 0 1 (MONITOR OUT)
MUTE MODE Y-MUTE
CONTRAST
MAX
(USER-CONTROL)
BRIGHT MAX (USER-CONTROL)
COLOUR CENTER (USER-CONTROL)
B-MONITOR SW 0 1 (MONITOR OUT)
MUTE MODE Y-MUTE
SUB Tint MUTE MODE Y-MUTE
Unspecified items PICTURE NORMAL (CONT.
Note :
All the settings will be back to the initial ones when shifting into any other mode or getting out of the
service mode.
Allocation of special keys in the service mode
*HORIZONTAL POSITION key CONFIRM (SET S-PICTURE)
*Y-MUTE KEY SET
*COLOUR select key TIMER ON/OFF
*DIRECT TUNING MODE KEY RETURN
*VCR SLOW TEST KEY
MODE KEY DISPLAY
Adjustment precautions
Basically follow the sequential order of adjustments.
(Unless otherwise specified, follow the adjustment procedures.)
The “*“-marked steps in the adjustment procedures are automatically taken when in the service mode. Leave
out these steps.
For adjustments in the service mode, it is necessary to have the remote controller at hand.
Trouble indicators
If the set is interrupted by the protectors, the following indicators work to identify a spot in trouble.
LED (red) flashing : Deflection system protector activated
LED flashing
(high-voltage or beam protector)
: bus line error
LED off
or tuner, EEPROM)
: Power protector activated
line short-circuited)