Circuit Adjustments - Sanyo PLC-XF47 Service Manual

Electrical Adjustments
● Circuit Adjustments
CAUTION: The each circuit has been made by the fine adjustment at factory. Do not attempt to the adjust the following
adjustments except requiring the readjustments in servicing otherwise it may cause loss of perfprmance and
product safety.
WARNING : USE UV RADIATION EYE AND
[Adjustment Condition]
● Input signal
Computer signal ...................... 0.7Vp-p/75Ω terminated.
Composite video signal ..........1.0Vp-p/75Ω terminated.
Component video signal ........0.7Vp-p/75Ω terminated.
● Picture control mode ..............."STANDARD" mode unless otherwise nited.
Note :
n The following adjustment is the adjustment item for
Assembly power.
1-1. +6V voltage adjustment
n The following adjustment is the adjustment item for
Switching Regulator.
1-2. +24V voltage adjustment
n The following adjustments are the adjustment items for
Terminal board-5BNC. The adjustment data is stored to
Terminal board-5BNC(IC9913).
2. AV video signal adjustment (Y)
3. AV video signal adjustment (C)
n The following adjustment is the adjustment item for
Assembly sub power and assembly main. The adjustment
data is stored to Assembly main (IC802).
5. Fan driving voltage adjustment
SKIN PROTECTION DURING
SERVICING
16 steps gray scale pattern (XGA),
100% and 50% white pattern (XGA),
1 dot line pattern (XGA)
16 steps gray scale pattern,
color bar pattern (PAL, SECAM),
100% and 50% white pattern
16 steps gray scale pattern(480i),
color bar pattern (480i)
CAUTION: To prevent suffer of UV radiation,
those adjustments must be
completed within 25 minutes.
16steps gray scale pattern
White 100%
n The following adjustments are the adjustment items for
Assembly sub power and assembly main. The adjustment
data is stored to Assembly main (IC802).
4. LCD panel L/R Setting
9. Common center adjustment
n The adjustment data is stored to Assembly main (IC302).
白100%
6. Gain adjustment 1 (PC)
7. Gain adjustment 2 (Compsite)
8. Gain adjustment 3 (Component)
n The adjustment data is stored to Assembly main (IC1861).
10. Gamma, White balance, White uniformity
adjustment
11. Read / Write of LCD panel gamma data when
Main Board replacing
12. Color shading correction
n The Projector data is stored to Assembly main (IC802).
Projector used time
Lamp used time
Filter counter
- 86 -
Black 100%
黒100%