Toshiba RAV-SM1603AT-E Service Manual page 144

No. Part name
1. Detachment
8 Replacement of
electric parts
IPDU P.C. board
Procedure
1) Carry out works of 1 of 1 , 3 and 4 .
2) Remove the lead wire connected to the terminal
block. (IPDU crossover wire, reactor lead wire)
3) Remove the lead wire connected to the noise filter.
(Fuse crossover wire, power supply crossover wire)
4) Close CDB part. (Tentative fixing with supporter)
5) Remove the connector connected to CDB board.
(Serial, lower fan motor, 4-way valve coil, PMV coil,
compressor case thermostat, temperature sensor,
IPDU crossover wire, DC15V, DC280V)
6) Cut the bundling band which binds the serial lead
wires.
7) Remove the connector connected to IPDU P.C. board.
(Power supply)
8) Carry out works of 5) and 8) of 7 .
9) Remove screws to connect the electric parts box and
screws of the terminal block mounting plate.
(BT2T Ø4 × 6, 3 pcs.)
10) Pull up the electric parts box to separate the unit at
CDB side.
11) Remove the compressor lead wire.
12) Remove IGPT fixing screws. (B Ø4 × 15, 2 pcs.)
13) Remove screws which fix the P.C. board.
(TT2P Ø3 × 18, 2 pcs.)
14) Remove IPDU P.C. board. (Supporter: 2 positions)
15) Remove lead wires connected to P.C. board.
16) Mount a new IPDU P.C. board.
(Apply silicon grease to surface to be contacted with
IGBT heat sink.)
– 144 –
Remarks
Electric parts box (A) Terminal block
IPDU IPDU IPDU
crossover wire crossover wire crossover wire
Fuse Power supply
crossover wire crossover wire
4-way valve Serial crossover wire
Power Power Power
supply supply supply
Lower Lower Lower
fan motor fan motor fan motor
IPDU Compressor
crossover wire case thermostat
Temperature sensor
Screws Screws Screws
P .C. board P .C. board P .C. board
fixing screws fixing screws fixing screws
Compressor IGBT
lead wires fixing screws
IGBT IGBT IGBT
Silicon grease Silicon grease Silicon grease
Reactor Reactor Reactor
lead wire lead wire lead wire
Bundling Bundling Bundling
band band band
PMV PMV PMV