Comp-Ipdu P.c. Board (Mcc-1596) Replacement Procedure - Toshiba MMY-MAP0804HT8JP Service Manual

13-2-4. Comp-IPDU P.C. Board (MCC-1596) Replacement Procedure

This board is commonly installed in different models before shipment. Set the dip switch (SW800) setting of the
service board to the switch setting before replacement.
Replacement Steps:
(1) Turn off the power supply of the outdoor unit and allow at least 3 minute for the capacitor to discharge.
(2) Remove all the connectors and the fast-on terminals (
connectors and fast-on terminals by pulling the connector body. Do not pull the wire).
(3) Remove all the four screws(
(These screws are to be re-used after procedure.)
(4) Remove the Compressor IPDU from the four spacers (
pliers.
Ex. MMY-MAP1004HT8P
Compressor IPDU
(MCC-1596)
(5) Confirm that no dirt or damage is on the insulation sheet (flesh color) on the heat sink. As it can reduce the heat
transfer efficiency, and can cause a breakdown. If the insulation sheet comes off the heat sink, re-apply the
insulation sheet as shown in the following figure.
2
) which secures the Compressor IPDU to the Heat sink.
Compressor IPDU
1
BLACK lead wire
3
SW800
3
2
Screw
Remove the
PCB
Insulation sheet (flesh color)
Spread it on the heat sink
– 283 –
1
) connected to the Compressor IPDU. (Remove the
3
) by pinching the top of the spacers by round-nose
1
WHITE lead wire
3
1
RED lead wire
2
Screw
1
1
1
RED lead wire
1
WHITE lead wire
1
BLACK lead wire
∗ Reuse the insulation sheet.
Using a little heat transfer paste
on the heat sink will make easier
to install, because the insulation
sheet will stick to the heat sink.
Pinch this part by
round-nose pliers for
removing the PCB.
3
Spacer
(4 are in packed in this
service assembly)