Sharp LC-13B2UA, Руководство по обслуживанию

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LC-13B2UA
12
1 B+ Adjustment
(R3760)
2 Inch Size setup
(If E
2 PROM is replaced)
(IC2004)
3 Common-bias
adjustment
4 TAMP adjustment
1. Connect the DC voltmeter to pin (2) of
P3702.
1. Go to the adjustment mode.
1. Receive a B/W channel.
2. Go to the adjustment mode.
3. Select the "COM BIAS" with [MENU]
key.
1. In the TV mode, the unit receives a
picture of the half color bar signal
whose left top corner is 75% white.
The signal does not have to be the
half color bar as long as the 180th
line from the top and 46th pixel from
the left is 75% white. (Data at this
point is used for adjustment.)
2. Adjust "NTSC TAMP" on the page 2
of the adjustment process mode so
that the "Y" value on the same page
falls between BF - C9.
Page 2 of the adjustment process
mode
3. Set the values of PAL-M TAMP and
PAL-N TAMP same.
1. Adjust the "B+ Adj" value to
5.0
±
0.02V with R3760.
* Keep the voltage at pin (2) of P3702
below 5.3V during the adjustment.
1. Select "INCH SIZE" and adjust to
"13" with [VOL +] or [VOL –] key.
* The color of "INCH SIZE" must be
yellow.
1. Adjust "COM BIAS" to the darkest
screen with [VOL +] and [VOL –] key.
* The color of "COM BIAS" must be
yellow.
4. Adjustments
Adjustment Adjusting conditions Adjusting method
2
|
C O M B I A S 140
N T S C T A M P 27
P A L - M T A M P 27
P A L - N T A M P 27
R C U T O F F 0
G C U T O F F 0
B C U T O F F 0
G3 B3 R3 00 00 00
G1 B4 Y DF DE B5
T A M P H C9
T A M P L BF
GAIBU VER 0.000
Y-Data
(White 100%)
Vertical: 180th line
Horizontal: 46th pixel
Upper left 75%
640 pixels
480 lines