Replacement Of Service P.c. Board - Toshiba RAV-GM901KRTP Series Service Manual

9. REPLACEMENT OF SERVICE P.C. BOARD

[Requirement when replacing the service indoor P.C. board assembly]
In the non-volatile memory (Hereinafter said EEPROM, IC10) installed on the indoor P .C. board before
replacement, the type and capacity code exclusive to the corresponding model have been stored at shipment
from the factory and the important setup data such as refrigerant line /indoor unit /group address in
(AUTO/MANUAL) mode have been stored at installation.
Replace the service indoor P .C. board assembly according to the following procedure.
After replacement, make sure that the indoor unit address is set correctly and also the refrigerant cycle is
working correctly by test operation.
<Replacement procedure>
CASE 1
Before replacement, power of the indoor unit can be turned on and the setup data can be readout
by the wired remote controller.
Replace service P.C. board & power ON (see
(If in group operation, reset the power for all indoor units which are connected to the remote controller.)
CASE 2
Before replacement, the setup data can not be read out by the wired remote controller.
Replace service P.C. board & power ON (see
Write the data such as "option input selection" setup to EEPROM (see
Model type
RAV-GM∗∗∗KRTP series
Read EEPROM data (see
Write the read data to EEPROM (see
Power reset
(According to the customers' information)
Power reset
P.C. board model
MCC-1696
H1
in Page 61)
ò
H2
in Page 62)
ò
H3
in Page 64)
ò
H2
in Page 62)
ò
ò
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H3
in Page 64)