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ITEM
ADJUSTMENT PROCEDURE
3. Select RCUT, GCUT and BCUT with CHANNEL A, YW buttons, to set
individual values to 32, and to set GDRV and BDRV to 20 with VOLUME
<i —/+ buttons.
5. Press -/-- button to release horizontal line picture, and select the two other
colors which did not light in the above step with CHANNEL 4A, W buttons.
Then tap VOLUME .4 -/+ buttons so that three colors slightly light in the
same level.
Light area check
(to show white)
* CUTOFF ADJUSTMENT
(RCUT)
(GCUT)
(BCUT)
* DRIVE ADJUSTMENT
(GDRV)
(BDRV)
XX To correct white balance in light area,
select GDRV and BDRV with CHANNEL
A, V buttons to adjust.
XX To correct white balance in dark area,
perform fine adjustment of RCUT, GCUT
and BCUT.
Dark area check
(to show black)
SELF DIAGNOSTIC FUNCTION
1) Press "9" button on Remote Control during display of adjustment menu.
The diagnosis will begin to check if interface among IC's are executed properly.
2) During diagnosis, the following displays are shown.
® BLOCK
{SELF CHECK)
UV : TV reception mode
@® | 23905310
V1: VIDEO 1 input mode (©) 1)
@ | Power
:
00
V2 : VIDEO 2 input mode (© 2)
@ | BUSLINE
:
OK
@®]
BUSCONT
:
OK
Indicated color of mode now selected: Green and Red
® | Block
>:
UVV1 V2
Indicated color of other modes
: White
Qvo1
Green : Normal
Red:
The microcomputer operates to provide
judgement of no video signal. The red color is
still indicated though the signal is input, failure
may exist in input signal line including QVO1.
QV01 : In case of indication green ---Normal
In case of indication red with input signal----
@ Part number of microcomputer (QA01)
@® Operation number of protecting circuit ----"00" is
normal.
When indication is other than "00", overcurrent apts
to flow, and circuit parts may possibly be damaged.
® BUS LINE CHECK ----"OK" is normal.
Failure may exist in output line including QVO1.
"SDA1-GND" means that SDA line is shorted to
ground.
"SCL1-GND" means that SCL line is shorted to
ground.
"SCL1-SDA1" means that SDA line is shorted to
SCL line.
@ BUS CONT ----"OK" is normal.
When indication shows "QOOO NG', the device
with the number may possibly be damaged.
-i1-
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