Mitsubishi Lossnay LGH-150RVXT-E Handbook page 49

Step
4
Removing the circuit boards
• For the working precautions, see page 35.
• For removing the circuit boards, see (4) Control circuit board (page 39) or (5) Power circuit boards
(page 40 and 41).
5
Attaching the circuit boards
1 According to the function status record data prepared in Step 3, set the address
setting switches, function selection switches, and model selection switch of the
new circuit board.
a. Address setting (SA1 and SA2)
b. Function selection switches and model selection switch setting (SW2, SW5, and SW6)
2 Attach the power circuit board in the reverse order of the steps for removing.
Make sure to connect the connectors listed in the following table.
For power supply connection
For exhaust fan motor connection
For supply fan motor connection
For damper motor connection
For control circuit board connection
3 Reattach the PCB fix plate of the control circuit board, and then attach the con-
nectors, remote controller transmission cable, M-NET transmission cable, and
external signal cable, etc.
Make sure to connect the connectors or terminals listed in the following table.
( Connect PZ-61DR-E transmission cable terminal, M-NET transmission cable ter-
minal, and connector/terminal for external signal cable only when they are used.)
Connector and terminal
For thermistor connection (outdoor
temperature (OA))
For thermistor connection (indoor tem-
perature (RA))
For power circuit board connection
PZ-61DR-E transmission cable terminal TM4 1 2
M-NET transmission cable terminal
For external signal cable connection
4 Reattach the control cover.
Details
Connector Symbol on the circuit board
TAB1, TAB2, TAB5
CN9
CN10
CN7
CN118, CN119, CN121
Symbol on the circuit board
CN22
CN5
CN18, CN19, CN21
TB5 [A] [B]
TM2, TM3, CN17, CN26, CN32
─ 49 ─
Check item
Address set-
ting
Function set-
ting
Model selection
Circuit board
fixing screw
(1 pc.)
Check
PCB case
fixing screw
(1 pc.)
Earth fixing
screw (1 pc.)
Connector
connection
PZ-61DR-E
transmission
cable con-
nection
Check M-NET trans-
mission cable
connection
External
signal cable
connection
Cover screw
(6 pcs.)