Comp-Ipdu Board Replacement Procedure Manual; Board Layout The Inverte; Switch Layout On The Board - Toshiba Super MMU-AP0091H Service Manual

17-2-6. Comp-IPDU Board Replacement Procedure Manual

This service board is commonly installed in different models before shipment. If the board assembly is to be
replaced, replace it 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. Confirm that the charged voltage of the condenser has been fully discharged. (Confirm that the voltage
between CN13 and CN15 is 0V).
3. Remove all of the connector and fasten and screw terminals connected to the A3-IPDU board (Remove the
connector and fasten terminals by holding them.)
4. Remove 2 screws that fix the IGBT (Q200) of the Comp-IPDU board to the heat sink.
5. Remove the Comp-IPDU board from the four card edge spacers.
6. Set the dip Switch (SW801) of the Comp-IPDU board, as instructed in the table below.
If the model is not specified, inspection "L29" is displayed and the equipment will not operate.
Comp-IPDU No.
JAt shipment
7. After setting the dip Switch of the service board, apply silicone grease evenly onto the IGBT and install it in
the outdoor control unit (Confirm that it is securely fixed to the card edge spacers).
8. Fix the IGBT of the Comp-IPDU board to the heat sink with two screws.
9. serted).
10. If a component part on the board is bent during board replacement, adjust it manually not to contact other
parts.
11. Install the cover then turn on the power supply. Check the operation.

Board layout the inverte

Noise
filter
Fan IPDU
board
Power
supply
P .C. board
assembly
Terminal
Comp-IPDU
No.1
No.1
No.2
Interface board
Magnetic
switch
Comp-IPDU
No.2
SW801
Bit 1
ON
ON
ON

Switch layout on the board

T03
SW801
IC222
CN26
CN13
CN17
267
Bit 2
ON
ON
OFF
IC101
T01
CN15
Q200
T02 T04
T05