Precautions For Adjustment; Adjustments After Parts Replacement - Canon LV-7355J Service Manual

1. PRECAUTIONS FOR ADJUSTMENT

Memory IC handling
Memory IC (IC1801) on the main board stores the data for the service
adjustments, and should not be replaced except for the case of
defective device.
The data of lamp replacement monitor timer is stored in the IC1801.
Please note that the lamp replacement monitor timer is reset when the
memory IC (IC1801) is replaced.
(Lamp replacement monitor time can not be set to the previous value.)
Caution to memory IC (IC1801) replacement
When IC1801 is replaced with new one, the CPU writes down the default
CAUTION
data of the service adjustments to the replaced IC. As these data are not
the same data as factory shipped data, it should be required to perform
the re-adjustments following to the "Electrical Adjustments".
Please note that the lamp replacement monitor timer is reset.
Caution of Main Board replacement (in the case IC1801 is not defective)
When the main board is replaced, IC1801 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 replacement monitor timer can be kept the value
as before.

1.1 Adjustments after Parts Replacement

Condenser Lens Adjustment
Condenser Lens (OUT) Adjustment
Relay Lens (OUT) Adjustment
Contrast Adjustment
R-Contrast adjustment
G-Contrast adjustment
B-Contrast adjustment
Output voltage adjustment
Fan voltage adjustment
Pedestal adjustment
NRS adjustment
Signal center adjustment
Black level adjustment
PC offset adjustment
PC gain adjustment
AV gain adjustment
Common center adjustment
Gamma shift adjustment
White balance adjustment
LCD/ Condenser
Condenser Relay lens
Prism lens
lens
Ass'y (OUT)
3-1
: Adjustment necessary
Disassembly / Replaced Parts
Polarized glass
(OUT)
R G B
Part 3: Adjustment
: Check necessary
Power
Main
supply
P.F unit
board
unit