Replacement Of Service Indoor P.c. Board - Toshiba MMK-AP0073HP1-E1 Service Manual

10. REPLACEMENT OF SERVICE INDOOR P.C. BOARD

Model type
MMK-AP
[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
H1 Readout of the setup data from EEPROM
(Data in EEPROM contents, which have been changed at the local site, are read out together with data in
EEPROM set at shipment from the factory.)
CL TEST
SET
1. Push , and
(Corresponded with No. in Remote controller as shown below picture)
∗ When group operation, the header indoor unit address is displayed at the first time. In this time, the CODE
No. (DN) is displayed. The fan of the second indoor unit operates and the flap starts swinging if any.
P.C. board model
3HP1 series
Read EEPROM data (see
Write the read data to EEPROM (see
(According to the customers' information)
buttons of the remote controller at the same time for 4 seconds or more.
Label display on P.C. board
MCC-1510
H1
in Page 139, 140)
ò
H2
in Page 140, 141)
ò
H3
in Page 142)
ò
Power reset
H2
in Page 140, 141)
ò
ò
Power reset
159
FILE NO. SVM-16046
04DD M13S
H3
in Page 142)
1