Sony BRAVIA VPL-VW90ES, Service Manual, Page: 33 / 168

2-3 (E)
VPL-VW90ES
2-2. Service Know-How
2-2-1. When the Optical Unit Assembly is Replaced
1. Write the LookUpTable/3DGamma/ABGamma/LCK/OGMTable/CSMatrixTable data contained in
the attached CD-R. (Refer to Section 2-6-4.)
2. Change the IRIS data to the values of the IRIS adjustment data stored in the supplied CD-R.
(Refer to Section 2-2-3.)
3. Change the Panel Driver Gain B data to the values of the adjustment data stored in the supplied
CD-R. (Refer to Section 2-2-4.)
4. Change the Lens shift data to the values of the Lens shift data stored in the supplied CD-R.
(Refer to Section 2-2-5.)
5. Change the Panel alignment data to the values of the Panel alignment data stored in the supplied
CD-R. (Refer to Section 2-2-6.)
2-2-2. When the Board is Replaced
1. When the QA board is replaced
Remove IC602 from the old QA board and install IC602 by reusing the removed IC602. (When
replacing IC602, remove the heatsink and then install it again after replacing IC602.) If reuse of
IC602 is not possible, follow the procedure described below.
a) Change the IRIS data to the values of the IRIS adjustment data before replacement.
(Refer to Section 2-2-3.)
In case if the data cannot be changed, perform the IRIS adjustment. (Refer to Section 2-4.)
b) Obtain the former OGMTable data from the original QA board before replacement as follows.
(Refer to Section 2-6-5.)
Write down the obtained OGMTable data as follows. (Refer to Section 2-6-4.)
In case if the former OGMTable data cannot be obtained from the original QA board before
replacement, perform the W/B adjustment. (Refer to Section 2-3.)
c) Obtain the former CSMatrixTable data from the original QA board before replacement as follows.
(Refer to Section 2-6-5.)
Write down the obtained CSMatrixTable data as follows. (Refer to Section 2-6-4.)
d) Return the Panel Driver Gain B data value back to its original value before the QA board is
replaced. (Refer to Section 2-2-4.)
In case if the original data cannot be copied, perform the Panel Driver Gain B Adjustment.
(Refer to Section 2-5.)
e) Return the Lens shift data value back to its original value before the QA board is replaced.
(Refer to Section 2-2-5.)
f) Return the Panel alignment data value back to its original value before the QA board is replaced.
(Refer to Section 2-2-6.)
2. When the CA board is replaced
Remove IC2501 and IC4002 from the old CA board and install them to the new CA board that is
supplied as the repair part, before replacement.
3. When the CB, GA, GB, EM, HA, HB, NF, NR, QB, TA, TL, J, U, or V board is replaced
No particular adjustments are needed.