Procedure After Replacing The Mcu, Etc. - Polk Mono Signa S4 Service Manual

PROCEDURE AFTER REPLACING THE MCU, ETC.

The procedure after replacing the MCU (microprocessor), flash ROM, etc. is as follows.
PCB Name Ref. No. Description
MAIN
U4 IA3S4 (BAR)
(BAR)
MAIN
M1 IA3S4 (SUB)
(SUB)
Procedure after Replacement
A : The software has been written. The software is not written at the time of replacement.
B : The software has been written. The software may need to be rewritten by version updates. Check the
version.
See "FIRMWARE UPDATE PROCEDURE" for information on writing the software.
C : The software has not been written. The software needs to be written after replacement.
See "FIRMWARE UPDATE PROCEDURE" for information on writing the software.
D : The software has been written. Be sure to rewrite with the latest software for your service region.
See "FIRMWARE UPDATE PROCEDURE" for information on rewrite the software.
Procedure after Remark
Replacement
A WIRELESS MODULE : Tx
A WIRELESS MODULE : Rx
56