Panasonic PT-VX400U

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Servicing Notice
Note on main board replacement
Take the following workings when the main board is replaced.
This projector stores "Color shading correction data" and "Gamma correction data" in the memory IC (IC801) on the
main board. Those adjustment data have 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 the those setting data 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 correction, gamma
correction. 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"
displayed on the on-screen menu "Information" 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.
•
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.
Adjustment data setting
Serial number 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 ~ 437" 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-VX400 431
0
[ (refer t table right)
1 0 -> 10
PT-VX400U 432
0
[ (refer t table right)
1 0 -> 10
PT-VX400E 433
0
[ (refer t table right)
1 0 -> 10
PT-VX400EJ 434
0
[ (refer t table right)
1 0 -> 10
PT-VX400EA 435
0
[ (refer t table right)
1 0 -> 10
PT-VX400EAJ 436
0
[ (refer t table right)
1 0 -> 10
PT-BX40 437
0
[ (refer t table right)
1 0 -> 10
Model no. setting
Data Model no.
0 Not defined
1 PT-VX400
2 PT-VX400U
3 PT-VX400E
4 PT-VX400EJ
5 PT-VX400EA
6 PT-VX400EAJ
7 PT-BX40
Model no. chanking
Model no. setting
The projector service tool v.4.20 and serial no. setting tool v1.00 can be downloaded from the projec-
tor service web site.