C. Board Exchange Procedures; Interface P.c. Board Replacement Procedure (Mcc-1639:43H69066) - Toshiba MCY-MHP0806HT8-C Series Service Manual

11
P.C. board exchange procedures
11-1. Interface P.C. board replacement procedure
(MCC-1639:43H69066)
1. Applicable models
MCY-MHP0806HT8-(C)(CF)
MCY-MHP0906HT8-(C)(CF)
MCY-MHP1006HT8-(C)(CF)
MCY-MHP0806HS8-(E)(TR)
MCY-MHP1006HS8-(E)(TR)
2. Shipped parts list
Please make sure that before you do the work, the following parts are shipped all.
No
1 P.C. board Replacement Procedure Manual (English and Chinese each 1 page A4 paper double side print.)
2 Service P.C. board MCC-1639 -08C
3. Replacement steps
(1) Turn off the power of the outdoor control unit. (Turn off the power of the outdoor unit.)
(2) Immediately after turning off the power of the outdoor unit, the electrolytic capacitors inside the unit will still have a high voltage,
and there is a risk of electric shocks. Therefore, wait at least 5 minutes after turning off the power then start the replacement procedure.
(3) Disconnect all the connectors which are connected to the interface P.C. board.
(Since the connectors may be damaged if they are pulled out by grasping their lead wires, be sure to take hold of the connectors themselves
when disconnecting them.)
(4) Remove the malfunctioning interface P.C. board, from the eight card edge spacers ①.
(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-MHP0806HT8-(C)(CF)
MCY-MHP0906HT8-(C)(CF)
MCY-MHP1006HT8-(C)(CF)
MCY-MHP0806HS8-(E)(TR)
MCY-MHP1006HS8-(E)(TR)
Interface P.C. board
(43H69066)
DIP switch setting location
SW06 SW07 SW09
SW11 SW12 SW13
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.
Parts name
(Interface P.C. board) in Antistatic air cap
J08
Factory Default Yes
Disconnect
Leave intact
Disconnect
Disconnect
Leave intact
①
①
SW10
①
SW14
①
Jumper wires
J09 J10
Yes Yes
Disconnect Leave intact
Leave intact Disconnect
Leave intact Disconnect
Leave intact Leave intact
Disconnect Leave intact
①
173
Quantity
1
1
J11 J12
Yes Yes
Leave intact Leave intact
Leave intact Leave intact
Leave intact Leave intact
Leave intact Leave intact
Leave intact Leave intact
①
7-segment Display
D600 D601 D602 D603
①
Card edge spacer
①
Push the lock toward
arrow's direction, then
Take off the P.C. board
D604