Sanyo PLC-XL40, Руководство по обслуживанию

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-5-
[Adjustment Condition]
●
Input signal
Video signal ......................... 1.0Vp-p/75
W
terminated, 16 steps gray
scale (Composite video signal)
Computer signal .................... 0.7Vp-p/75
W
terminated, 16 steps gray
scale pattern
Component Video signal ....... 0.7Vp-p/75
W
terminated, 16 steps gray
scale (Component video signal with
480p, 575p, 70p or 1080i format)
●
Picture control mode............... “STANDARD” mode unless otherwise
noted.
Note:
* Please refer to “Service Adjustment Menu Operation” for entering the service mode and adjusting the service
data.
White 100%
Black 100%
Circuit Adjustments
CAUTION: The each circuit has been made by the fine adjustment at factory. Do not attempt to adjust the follow-
ing adjustments except requiring the readjustments in servicing otherwise it may cause loss of perfor-
mance and product safety.
Electrical Adjustments
16 steps gray scale pattern
After replacing the Power Board readjust the Output
voltage adjustment as follows.
1. Connect a digital voltmeter to pins 1 (+) and 3 (-) of
K6d
.
. Adjust the voltage by using
VR611
as following.
AC Input Reading
30V 380V ±V
Caution:
Be sure to connect the lamp when taking this adjust-
ment.
Output Voltage adjustment
* This adjustment is not required even if the power
board is replaced because this adjustment is carried
out before parts shipment.
WARNING : USE UV RAdIAtIoN EYE ANd SKIN
PRotECtIoN dURING SERVICEING
1. Enter the service mode.
. Connect a digital voltmeter to test point “
tPFANA
” (+)
and chassis ground (-). Select group no. “
111
”, item
no. “
94
” and change data value to adjust voltage to
be
5.2
±0.1V.
3. Connect a digital voltmeter to test point “
tPFANB
”
(+) and chassis ground (-). Select item no. “
96
” and
change data value to adjust voltage to be
5.2
±0.1V.
x
Fan Control adjustment
WARNING : USE UV RAdIAtIoN EYE ANd SKIN
PRotECtIoN dURING SERVICEING
1. Enter the service mode.
. Panel Type Check
Select group no. “
290
”, item no. “
0
”. Check the data
value as follows;
Data value: 0 For L-Type of LCD Panel
Data value: 0 For R-Type of LCD panel
3. Panel Type Setting
Select group no. “
290
”, item no. “
1
” and change data
value from 10 to 0 or 0 depending on your LCD
Panel type. When the data value reaches 0 or 0,
it returns to 10 quickly. The gamma-characteristics
changes according to your selection.
* Refer to the item "LCD Panel/Prism Ass'y removal"
for the panel type check.
z
Panel Type Check and Setting