Toshiba MMU-AP0091H Exchange of P.C. Board for Indoor Service, Exchange procedure, 217

17. P.C. BOARD

17-1. Indoor Unit

17-1-1. Exchange of P.C. Board for Indoor Service

Part code	Model type	P.C. board model	Label display on P.C. board
	MMU-AP✻✻1WH series
	MMU-AP✻✻1YH series
	MMU-AP ✻✻1SH series
431-6V-207	MMD-AP✻✻1H series	MCC-1403		03RD M01
	MML-AP✻✻1H series
	MMU-AP✻✻1BH series
	MMF-AP✻✻1H series
431-6V-210	MMD-AP✻✻1BH series	MCC-1402		03DD M02
	MMU-AP✻✻1H series
	MMC-AP✻✻1H series
431-6V-269	MMK-AP✻✻1H series	MCC-1402		03DD M03
	MMD-AP✻✻1SPH/SH series
	MMU-AP✻✻2SH series

Requirement when exchanging the P.C. board assembly for indoor service

The fixed memory (herein EEPROM, IC10) stores the model type and capacity code, which are set upon shipment from the factory.

Data set upon installation (i.e. line/indoor/group addresses) are also stored in the EEPROM. Proceed with the exchange of the P.C. board as shown in the procedure below.

After exchange, confirm the settings for master/sub, etc. are correct and carry out a test operation.

Exchange procedure

Method 1

Before exchange, it is possible to turn on the power of the indoor unit and read out the setup contents from the wired remote controller.

Readout of EEPROM data: Procedure 1

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Exchange of P.C. board for service & power ON: Procedure 2

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Programming the EEPROM data: Procedure 3

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Power supply reset

(All the indoor units connected to the remote controller are reset in case of group operation control)

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