Sanyo PLC-XF71, Service Manual, Page: 50 / 236

-50-
●
: Adjustment necessary
❍
: Check necessary
Adjustments after Parts Replacement
Adjustments
disassembly / replaced Parts
Lcd/
Prism Ass’y Lcd Panel
optical
Parts
Main board
Power
board
Power
(dc) board
Fans
Sensor
(S901)
o
p
tic
al
A
d
ju
st
m
en
t
Optical center adjustment
●
PBS adjustment
●
Contrast adjustment
● ● ●
Back focus adjustment
● ●
Convergence adjustment
●
e
le
ct
ric
al
A
d
ju
st
m
en
ts
+6V adjustment
●
AV video signal adjustment (Y)
●
AV video signal adjustment (C)
●
LCD panel L/R setting
●
Fan driving voltage adjustment
● ● ●
Gain adjustment 1 (PC)
●
Gain adjustment 2 (Composite)
●
Gain adjustment 3 (Component)
●
Common center adjustment
● ● ●
Gamma & Color shading correction
adjustments
❍ ❍ ❍ ●
White balance adjustments
❍ ❍ ❍ ●
Read/Write of gamma data
●
Filter adjustment
● ● ●
Note on the main board replacement
When replacing the main board, take read/write procedure of the gamma adjustment data and color shading cor-
rection data.
The “gamma adjustment data” and “color shading correction data” of each panel have been adjusted precisely at
the factory to match the characteristics of each panel.
When you replace the main board, you need to read out the "gamma adjustment data" and "color shading correc-
tion data" stored in the memory IC on the previous main board and write down them into the memory IC on the
new main board. By this way, the projector is enabled to reproduce the picture which has the properly adjusted
gamma characteristic and color shading correction.
Use "Projector Service Tool" software for Read/Write of the gamma adjustment data and color shading correction
data. This tool also enable to correct the color shading and gamma characteristics.
ProJector SerVIce tooL v. 4.10
SerVIce PArtS No.: 610 337 8787