Interface Board Replacement Procedure Manual - Toshiba Super MMU-AP0091H Service Manual

17-2-5. Interface Board Replacement Procedure Manual

This service board is commonly installed in different models before shipment. If the board assembly is to be
replaced, check the displayed inspection contents and replace the board properly in accordance with the model,
following this procedure manual.
<Replacement steps>
1. Turn off the power supply of the outdoor control unit (Turn off the power supply of the outdoor unit).
2. Remove all of the connector and fasten and screw terminals connected to the interface board (Remove the
connector and fasten terminals by holding them).
3. Remove the interface board from the six card edge spacers.
4. Disconnect the jumper wires of the service board, as instructed in the table below.
The jumper setting differs from the one before replacement.
If the model is not specified, inspection code "L10" is displayed and the equipment will not operate.
No.
At shipment Service P .C. board
MMY-MAP0501H8-INV
1
MMY-MAP0501H7-INV
MMY-MAP0601H8-INV
2
MMY-MAP0601H7-INV
MMY-MAP0801H8-INV
3
MMY-MAP0801H7-INV
MMY-MAP1001H8-INV
4
MMY-MAP1001H7-INV
MMY-MAP1201H8-INV
5
MMY-MAP1201H7-INV
5. Set dip switch settings of the service board to the switch settings before replacement.
Dip Switch
SW07
SW10
SW11
SW13
SW14
SW30
6. After setting the jumper wires of the service board, install the service board in the outdoor control unit
(Confirm that it is securely fixed to the card edge spacers.)
7. Connect the connector and fasten terminals (Confirm that they are correctly and securely inserted).
8. If a component part on the board is bent
during board replacement, adjust it manually
not to contact other parts.
9. Install the cover then turn on the power supply.
Check the operation.
Model name
Demand setting
Outdoor fan high static pressure setting, etc.
Cooling/Heating priority setting, etc.
System address setting
Terminating resistance setting
Jumper wire replacement place
(J09, 10, 11)
J09
Yes
Disconnect Leave intact
Leave intact Leave intact
Disconnect
Leave intact
Disconnect Leave intact
Setting contents
IC300 IC301
CN311
266
J10 J11
Yes Yes
Disconnect
Disconnect
Disconnect Leave intact
Disconnect Leave intact
Leave intact
IC02
IC01
CN314