Toshiba MCY-MHP0404HT-C Service Manual page 168

(5) Cut the jumper wires of the service P.C. board as indicated in the table below.
These settings are different from the settings for the jumpers on the P.C. board (malfunctioning board) prior
to its replacement.
If the model setting is not selected, inspection code "L10" will be displayed, and the outdoor unit operation
will remain stopped.
Model name
Service P.C. board
MCY-MHP0404HT*-**
MCY-MHP0504HT*-**
MCY-MHP0604HT*-**
Interface P.C. board
(43H69011)
DIP switch setting location
SW06 SW07 SW09 SW10
SW11 SW12 SW13 SW14
SW16 SW17
Jumper wire setting location
J12
J11
J10
J09
Short connector
J08
(6) Set the DIP switches of the service P.C. board to the settings used before replacement.
(7) The short connectors must be connected at the address setup stage. Therefore, when replacing the P.C.
board, leave the shipment settings unchanged, and after having replaced the board, follow the instructions in
section 8-4. "Address setup" in the service manual.
(8) After setting the jumper wires of the service P.C. board, install the board in the outdoor control unit.
(Check that the card edge spacers are securely fixed in place.)
(9) Connect the connectors of lead wires which were disconnected when the P.C. board was replaced, as shown
on the wiring diagram display panel.
(Check that the connectors have been inserted correctly and securely to prevent connection errors.)
(10) If any of the components on the P.C. board have been bent in the course of the replacing the board, rework
them so that they do not come into contact with the other components.
(11) Install the cover, turn on the power, and check operation.
J08
Factory default Yes
Disconnect
Leave intact
Disconnect
Jumper wires
J09 J10
Yes Yes
Disconnect Leave intact
Leave intact Disconnect
Leave intact Disconnect
167
J11 J12
Yes Yes
Leave intact Disconnect
Leave intact Disconnect
Leave intact Disconnect
7-segment display
D600 D601 D602 D603
(Card edge spacer)
Push this in the direction of the
arrow to unlock and remove the
P.C. board assembly.
D604