Sanyo PLC-XU75A, Руководство по обслуживанию

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[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, 8 color 100% color
bar or 16 steps gray scale (Component video
signal with 480p, 575p, 70p or 1080i for-
mat)
●
Picture control mode ........ “STANDARD” mode unless otherwise not-
ed.
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 following
adjustments except requiring the readjustments in servicing otherwise it may cause loss of performance
and product safety.
Electrical Adjustments
16 steps gray scale pattern
After replacing the Power Board readjust the Output volt-
age adjustment as follows.
1. Connect a digital voltmeter to pins (+) and 1 (-) of
K6d
.
. Adjust the voltage by using VR611 as following.
AC Input Reading
30V 380V ±1V
Caution:
Be sure to connect the lamp when taking this adjust-
ment.
* This adjustment is not required even if the power board
is replaced because this adjustment is carried out be-
fore parts shipment.
Output Voltage adjustment
* Before setting, you need to check which type of LCD pan-
el is placed on the projector according to the item "LCD
Panel/Prism Ass'y removal" in the chapter "Optical Parts
Disassembly".
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 accord-
ing to your selection.
Note:
Be careful to take this adjustment. The value of gamma
adjustment data will be reset and cannot be restored if
you change the mode of LCD panel type.
z
Panel Type Check and Setting
WArNING : uSe uV rAdIAtIoN eYe ANd SKIN
ProtectIoN durING SerVIcING.
cAutIoN:
to prevent suffer of uV radiation, those adjustments
must be completed within 25 minutes.
8 color 100% color bar
W Y C
G M R
B BLK
White 100% Black 100%