Replacement Of Service Indoor P.c. Board - Toshiba RAV-SP1100UT-E Service Manual

10. 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 from the
factory and the important setup data such as system/indoor/group address set in (AUTO/MANUAL) mode or
setting of high ceiling selection have been stored at installation time. Replace the service indoor P .C. board
assembly according to the following procedure.
After replacement, check the indoor unit address and also the cycle by a test run.
<REPLACEMENT PROCEDURE>
CASE 1
Before replacement, power of the indoor unit can be turned on and the setup data can be readout from
the wired remote controller.
CASE 2
Before replacement the setup data can not be readout from the wired remote controller.
Write the data such as high ceiling setup to EEPROM (According to the customers' information) *3
Read EEPROM data *1 (ref. P67)
Replace service P .C. board & power ON *2 (ref. P67)
Write the read data to EEPROM *3 (ref. P68)
Power reset (All indoor units in the group when group operation)
Replace service P .C. board & power ON *2 (ref. P68)
Power reset (All indoor units in the group when group operation)
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