Replacement Of Service Indoor P.c. Board - Toshiba MMK-AP0054MHP1-E1 Service Manual

11. REPLACEMENT OF SERVICE INDOOR 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 replace-
ment, the type and capacity code exclusive to the corresponding model have been stored at shipment (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.
(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.
Write the data such as "Option input selection" setup to EEPROM (see r3)
Model type
MMK-AP ∗∗∗ 4MHP1 series
Read EEPROM data (see r1)
Replace service P .C. board & power ON (see r2)
Write the read data to EEPROM (see r3)
Replace service P .C. board & power ON (see r2)
(According to the customers' information)
P.C. board model
MCC-1510
ò
ò
ò
Power reset
ò
ò
Power reset
115
FILE NO. SVM-16045