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Note on main board replacement
Take the following steps when the main board is replaced.
Servicing Notice
This projector stores "Color shading correction data" in the memory IC (IC801) on the main board. This adjustment
data has been setup according to the optical characteristics of the mounted LCD panels preciously in the factory.
When replacing the main board, you need to read out those setting datas 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, it enables the projector to
reproduce the picture which has properly adjusted color shading. For further details, refer to the operation manual of
the software [PROJECTOR SERVICE TOOL v4.20].
The data of serial number is stored in both memory ICs (IC1371) and (IC1051) on the main board. "Serial number"
used for the on-screen menu and "lamp runtime" is stored in the memory IC (IC1371). The serial number for EDID is
stored in the memory IC (IC1051).
After replacing the main board, perform the work below to restore the serial number and lamp runtime.
• Use the serial no. setting tool to write the correct serial no. referring to the serial no. (S/N) printed on the rating label.
For further details, refer to the operation manual of the software [SERIAL NO. SETTING TOOL v1.00].
• It is impossible to rewrite the serial number stored in the memory IC (IC1051), remove it on the previous main board
and replace it on the new main board.
• It is impossible to rewrite the lamp runtime stored in the memory IC (IC1371), remove it on the previous main board
and replace it on the new main board.
Adjustment data setting
Serial number and lamp runtime setting
The projector service tool v.4.20 and serial no. setting tool v1.00 can be download from the projector
service web site.
The data of projector's model no. is stored in both memory ICs (IC1371) and (IC1051) on the main board. The model
number displayed on on-screen menu is stored in the memory IC (IC1371). The model number for EDID is stored in
the memory IC (IC1051). After replacing the main board, perform the work below to restore the model number.
• 1. Enter the service mode.
2. Select the Group "430 ~ 438" and No. "1", change the data value from "0" to "10". Refer to table below. The data
value will return to "0" after setting.
3. To check the setting, select each Group and No. "0" and check its value with table below.
How to enter the service mode, or set the Group. No. and data, refer to the item "Service adjustment menu opera-
tion".
• It is impossible to rewrite the model number stored in the memory IC (IC1051), remove it on the previous main board
and replace it on the new main board.
Model no. setting
Group
No.
Data
Not defined
430
0
[
(refer t table right)
1
0 -> 10
PT-TW230
PT-TW231R
431
0
[
(refer t table right)
1
0 -> 10
PT-TW230U
PT-TW231RU
432
0
[
(refer t table right)
1
0 -> 10
PT-TW230E
PT-TW231RE
433
0
[
(refer t table right)
1
0 -> 10
PT-TW230EJ
PT-TW231REJ
434
0
[
(refer t table right)
1
0 -> 10
PT-TW230EA
PT-TW231REA
435
0
[
(refer t table right)
1
0 -> 10
PT-TW230EAJ
PT-TW231REAJ
436
0
[
(refer t table right)
1
0 -> 10
PT-XW23ST
PT-XW25SR
437
0
[
(refer t table right)
1
0 -> 10
Model no. setting
Data
Model no.
0
Not defined
1
PT-TW230
PT-TW231R
2
PT-TW230U
PT-TW231RU
3
PT-TW230E
PT-TW231RE
4
PT-TW230EJ
PT-TW231REJ
5
PT-TW230EA
PT-TW231REA
6
PT-TW230EAJ
PT-TW231REAJ
7
PT-XW23ST
PT-XW25SR
Model no. checking
Model no. setting
