Toshiba MMY-MAP0806HT7(J)P, Service Manual

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(6) Set the DIP switch (SW800) setting of the service board to match the switch setting from the original PCB.
-Set the DIP switch (SW800) depending on the position of the IPDU within the electrical box, as shown in the
following diagram.
(6) Apply the Silicone Thermal Grease to the semiconductors (IC302) on the service PC board, and align the PCB
mount holes on the PCB with the PCB mounts, and fix the FAN IPDU to the outdoor control unit by clipping the
PCB into the PCB mounts (
③
).
(7) Screw the FAN IPDU to the heat sink by the two screws that were removed in step (3). If the screws are loose,
the effected component will generate heat, and cause in to breakdown. Do not use an electric driver or an air
driver, as it can cause component damage. The torque of 2 screws (IC302) is “0.55Nm”.
(8) Re-connect the connectors and Faston and screw terminals(
①
). Be sure that all the connectors and the Faston
terminals are connected correctly and securely inserted.
(9) If the components on the PCB were bent during this procedure, straighten them so they do not to touch other
parts.
(10) Install the cover, then turn on the supply. Check the operation.
Ex. MMY-MAP1206HT8P Ex. MMY-MAP1606HT8P
FAN-IPDU
【
Upper Side
】
For Fan: 1
DIP switch (SW800) setting
：
ON
1 2
FAN-IPDU
【
Upper Side
】
For Fan: 1
DIP switch (SW800) setting
：
ON
1 2
Ex. MMY-MAP2206HT8P
FAN-IPDU
【
Upper Side
】
For Fan: 1
DIP switch (SW800) setting
：
ON
1 2
FAN-IPDU
【
Left Side
】
For Fan: 2
DIP switch (SW800) setting
：
ON
1 2
Uniformly apply the Silicone Thermal Grease to the heat dissipating surfaces of the IPM (IC302). .
Note: Do this work carefully since allowing any dirt, scratches, etc. to be left on the PC board
mounting areas of the semiconductors will impair the heat dissipation effect and may result in
a failure.
Silicone Thermal Grease use one of the following
･
Momentive Performance Materials ‘’TIG1000’’
･
Dow Corning Toray ‘’SC102’’
･
Mizutani Electric Ind ‘’HSC1000’’
･
Shin-Etsu Chemical ‘’G-746’’ or ‘’G-747’’
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