Toshiba MMU-UP0091HP-E Service Manual page 209

No. Part to be replaced
Electric parts box
③
Control board
④
Work procedure
1. Detachment
1) Remove the panel under the air intake and the electric
parts box cover.
(see the 1. of ① and 1. of ②)
2) Remove the remote controller wire, indoor/outdoor
connecting cord and power supply wire from the
remote controller terminal block and power terminal
block.
3) Remove the connectors from the control board.
First unlock the housing and then
disconnect the connectors.
CN34 : Float switch (3P : Red)
CN41 : Remote controller wire (2P : Blue)
CN40 : Indoor/outdoor connecting cord (2P : Blue)
CN 67 : Power supply (2P : Black)
CN01 : Reactor (2P : Blue)
CN100 : TC1 sensor (3P : Brown)
CN101 : TC2 sensor (2P : Black)
CN102 : TCJ sensor (2P : Red)
CN103 : TF sensor (2P : Green)
CN104 : TA sensor (2P : Yellow)
CN333 : Fan motor (3P : White)
CN 82 : Electronic control valve coil (6P : Blue)
4) Remove the mounting screws for the electric parts
box.
( 4X10, 2 pcs (screws locate under the cross slit on
the heat-insulating material))
5) Slide the electric parts box in arrow direction, and
remove the box from the bottom side.
2. Attachment
1) Attach the electric parts box, and rewire the connector
in the same way as before replacement.
C onfirm that the connector is installed
correctly.
B e sure to confirm that the wiring is
correct.
2) Attach the electric parts box cover and the panel under
the air intake..
1. Detachment
1) Remove the electric parts box. (see the 1. of ③)
(The control board can be removed without performing
the work procedure 1. of ③)
2) Unlock the cart edge spacers (5 pcs) within the
electrical equipment box, and remove the control
board.
Unlock the locks on the housing to remove
the connector.
2. Attachment
1) Reinstall the control board in the electric parts box in
the same way as before replacement
2) Install the electric parts box.
3) Re-connect the wiring within the electric parts box in
the same way as before replacement.
4) Mount the panel under the air intake, the electric parts
box cover, and the electric parts box.
- 209 -
Remarks
Remote controller Power supply
terminal block terminal block
Electric parts box
Screw
TC1 sensor
CN100 (brown)
Electronic control valve output
TC2 sensor
CN82 (Blue)
CN101 (Black)
Float SW
TCJ sensor
CN34 (Red)
CN102 (Red)
EEROM
IC503
CN104 (Yellow)
TF sensor
CN103 (Green)
DC fan output Reactor
CN333 (White) CN01 (Blue)
Control board
Note
Confirm that Nomex pare is in place
when replacing the control board.
TA sensor
Power supply
CN67 (Black)