Sharp VT-3448X Service Manual page 10

Item-by-item control in the service mode
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
*Y-MUTE KEY
*COLOUR MAXIMIN. select key
*DIRECT TUNING MODE KEY
*VCR SLOW TEST KEY
Adjustment precautions
(Unless otherwise specified, follow the adjustment procedures.)
out these steps.
Trouble indicators
If the set is interrupted by the protectors, the following indicators work to identify a spot in trouble.
SUB-BRIGHT
CONTRAST
BRIGHT
COLOUR
R-MONITOR SW 0 - > 1
MUTE MODE
CONTRAST
BRIGHT
COLOUR
B-MONITOR SW 0 - > 1
MUTE MODE
MUTE MODE
PICTURE
CONFIRM (SET -> S-PICTURE)
SET
TIMER ON/OFF
RETURN
DISPLAY
: IIC bus line error
: Power protector activated
(forced B/W)
(drive forced center)
Initial value
0 (E2PROM data resumed when any of the "1" thru
MAX (USER-CONTROL)
MAX (USER-CONTROL)
CENTER (USER-CONTROL)
(MONITOR OUT)
Y-MUTE
MAX (USER-CONTROL)
MAX (USER-CONTROL)
CENTER (USER-CONTROL)
(MONITOR OUT)
Y-MUTE
Y-MUTE
NORMAL (CONT. BRI. COL.)
(high-voltage or beam protector)