Adjustments After Parts Replacement - Canon LV-7215U Service Manual

1. ADJUSTMENT
Memory IC replacement
IC1801 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, the re-adjustments are required following to the "Electrical
Adjustments".
The data of lamp replacement counter is stored in the IC1801.
Please note that the lamp replace counter will be reset when the memory IC
(IC1801) is replaced.
(Lamp replace counter cannot be set to the previous value.)
Caution to memory IC replacement
When IC1801 is replaced with new one, the CPU writes down the default data of
CAUTION
the service adjustments to the replaced IC as the mentioned on the service
adjustment table. 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 in this case the lamp replace counter will be 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 replace counter can be kept the value as before.

1.1 Adjustments after Parts Replacement

Contrast Adjustment
R-Contrast adjustment
G-Contrast adjustment
B-Contrast adjustment
Integrator lens adjustment
Relay lens-out adjustment
Fan control adjustment
Clamp adjustment
Sub gain adjustment
Video center adjustment
PSIG adjustment
Black reference adjustment
Common center adjustment
Gamma adjustment
White balance adjustment
White uniformity adjustment
Disassembly / Replaced Parts
LCD/Prism Integrator
Ass'y Lens (OUT) Lens (OUT)
3-1
: Adjustment necessary
Polarized glass
Relay
R G B
Part 3: Adjustment
: Check necessary
Power
Main Board
Board