Servicing Notice; Note On Main Board Replacement; Adjustment Data Setting - Panasonic PT-TW230U Service Manual

Servicing Notice

Note on main board replacement

Take the following steps when the main board is replaced.

Adjustment data setting

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].
Serial number and lamp runtime setting
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.
The projector service tool v.4.20 and serial no. setting tool v1.00 can be download from the projector
service web site.
Model no. setting
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
Model no. setting Group
Not defined
PT-TW230
PT-TW231R
PT-TW230U
PT-TW231RU
PT-TW230E
PT-TW231RE
PT-TW230EJ
PT-TW231REJ
PT-TW230EA
PT-TW231REA
PT-TW230EAJ
PT-TW231REAJ
PT-XW23ST
PT-XW25SR
No. Data
0
[ (refer t table right)
430
1 0 -> 10
0
[ (refer t table right)
431
1 0 -> 10
0 [ (refer t table right)
432
1 0 -> 10
0 [ (refer t table right)
433
1 0 -> 10
0 [ (refer t table right)
434
1 0 -> 10
0 [ (refer t table right)
435
1 0 -> 10
0
[ (refer t table right)
436
1 0 -> 10
0 [ (refer t table right)
437
1 0 -> 10
Model no. checking
-30-
Data Model no.
0 Not defined
PT-TW230
1
PT-TW231R
PT-TW230U
2
PT-TW231RU
PT-TW230E
3
PT-TW231RE
PT-TW230EJ
4
PT-TW231REJ
PT-TW230EA
5
PT-TW231REA
PT-TW230EAJ
6
PT-TW231REAJ
PT-XW23ST
7
PT-XW25SR