Toshiba RAS-M10YKV-E Service Manual page 74

No. Part name
Control board 1) Disconnect lead wires and connectors connected
assembly
2) Disconnect cable connecting the main control
3) Remove the control board assembly from P.C.
Rear cabinet 1) Perform work of item 1 of
2) Remove fixed screws fixing to the bottom plate.
3) Remove fixed screws fixing to the heat
4) Remove fixed screw fixing to the valve mounting
Procedure
from the control board assembly to other parts.
1. Lead wires
• Connection with terminal block : 5 wires
(Black, Orange, Red, Two white wires)
• Connection with compressor : Remove the
connector (3P).
• Connection with reactor : Remove the relay
connectors from P07, 08 (2P, White) and
P12, 13 (2P, Yellow).
2. Connectors
• Main control board assembly side
CN300 : Outdoor fan (3P, White)
CN301 : Outdoor fan position detection
(5P, White)
CN701 : 4 valve (3P, Yellow) (M18YAV-E only)
• Sub-control board assembly side
CN01 : TE sensor (2P, White)
CN02 : TD sensor (3P, White)
CN04 : TS sensor (3P, Black)
CN05 : TGa sensor (3P, Yellow)
CN08 : Case thermo. (2P, White)
CN13 : B room pulse modulating valve
(6P, Red)
CN14 : A room pulse modulating valve
(6P, Black)
board assembly side and sub-control board
assembly.
• Main control board assembly side
CN704 : Connecting cable (4P, White)
• Sub.-control board assembly side
CN15 : Connecting cable (4P, White)
board base.
1. Main control board assembly side
• Remove two claws of P.C. board base, and
remove upward the heat sink with hands.
• Remove three screws fixing the heat sink
and main control board assembly side, and
replace the board with a new one.
2. Sub- control board assembly side
• Remove P.C. board base from the inverter
box.
• Remove two claws of P.C. board base, and
replace the board with a new one.
(ST1TØ4 x 10 3 pcs.)
exchanger. (ST1TØ4 x 10 2 pcs.)
plate. (ST1TØ4 x 10 1 pc.)
, and .
– 74 –
Remarks
CN300, CN301 and CN701
(M18YAV-E only) at the main
control board assembly side and
CN08 and 15 at the sub- control
board assembly side are connec-
tors with locks. Therefore,
remove the connector while
pushing the part indicated by an
arrow.
When mounting a new board,
check that the board is correctly
set in the groove of base holder
of P.C. board base.