User Manual

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IC836 on the main board stores the data for the service
adjustments, and should not be replaced except for the
case of defective device.
If replaced, it should be performed the re-adjustments
following to the “Electrical Adjustments”.
The data of lamp replacement monitor timer is stored in
the IC836.
Please note that the lamp replace counter is reset
when the memory IC (IC836) is replaced.
(Lamp replace counter can not be set to the previous
value.)
● Caution to memory IC replacement
When IC836 is replaced with new one, the CPU writes
down the default data of the service adjustments to the
replaced IC, refer to the service adjustment table. As
these data are not the same data as factory shipped
data, it should be required to perform the re-adjust-
ments following to the “Electrical Adjustments”.
Please note that in this case the lamp replace counter
will be reset.
● Caution of Main Board replacement (in the case
IC836 is not defective)
When the main board is replaced, IC836 should be
replaced with the one on previous main board. After
replacement, it should be required to perform the re-
adjustments following to the “Electrical Adjustments”.
In this case, the lamp replace counter can be kept the
value as before.
● Memory IC Replacement
Contrast Adjustment
R-Contrast adjustment ●❍ ●
G-Contrast Adjustment ●❍ ●
B-Contrast adjustment ●❍ ●
Condenser lens adjustment ❍❍
Relay lens adjustment ❍❍
Picture image adjustment ❍❍ ●●
Picture focus adjustment ❍❍ ●●
Output voltage adjustment ❍
Fan minimum voltage adjustment ●
TV sound level adjustment ●
TV stereo separation adjustment ●
TV video level adjustment ●
Common center adjustment ●●
Panel luminance adjustment ❍❍
White balance adjustment ❍❍
Color shading correction ❍❍
● : Adjustment necessary ❍ : Check necessary
Disassembly / Replaced Parts
LCD/
Prism
unit
Opti-
cal
unit
Polarized glass
RGB
Optical Adjustments
Electrical Adjustments
Main
Board
Screen
and
mirror
Power
Board
Digital
Board
Projec
-tion
lens
After replacing electrical parts and optical parts, electrical adjustments and optical adjustments are required.
■ Adjustments after Parts Replacement