Abnormal Device; Brightness Lowers - Sony TRIMASTER EL BVM-E171 Service Manual

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• For the external temperature and panel temperature, refer to
Temperature".
Unit status at an error
Only a notification (front indicator) of abnormal state
Remedy
Check the following items of the applicable fan.
• Check the foreign substances in the fan.
• Check if there is any connection failure such as coming off of connector in the connection between the axial fan
(located in the upper portion of the unit).
• Check the operation of fan itself.
3-3-6.

Abnormal Device

Factor
The flash ROM (IC2500 to IC2503) on the BC board that stores panel pixels luminescence history data for correcting
panel burn reached its lifetime and cannot be read or written.
Unit status at an error
Only a notification (front indicator) of abnormal state
Remedy
• When the operation time is about 100 hours or less
1.
Replace all flash ROMs (IC2500 to IC2503) on the BC board.
2.
Turn on the unit.
3.
Run the TeraTerm and perform the MR6 command connection from the PC. (Refer to
Commands from the
4.
Enter the command "stop_bic_regular_correct" and wait for a response of "ok".
5.
Enter the command "crest_bic_flash_format and wait for a response of "ok".
6.
Enter the command "crest_bic_flash_format_check" repeatedly until a response of "ok" is returned.
Tip
It takes about 15 minutes from the command entry in step 5 until a response of "ok" is returned in step 6.
7.
Restart the unit.
• When the operation time is about 100 hours or more
Replace the OLED module. (Refer to
3-3-7.

Brightness Lowers

Factor
The brightness has been lowered to protect the panel because the panel temperature exceeded 58°C. (For checking the
panel temperature, refer to
"6-10. Displaying Panel Temperature and Room
Unit status at an error
Only a notification (front indicator) of abnormal state
Note
If the panel temperature is still high even after the brightness is lowered, the unit is shut down. (Refer to
Panel
Temperature".)
BVM-E171
PC".)
"4-11. OLED Module Assembly and Bezel
"6-10. Displaying Panel Temperature and Room
Assembly".)
Temperature".)
"1-4-6. Connecting
"3-3-2. Abnormal
3-10

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