Mitsubishi Electric MUZ-LN VG Series Service Manual page 42

10-7. TEST POINT DIAGRAM AND VOLTAGE
Indoor power P.C. board, Indoor electronic control P.C. board, Display and receiver P.C. board, Switch
buzzer P.C. board
MSZ-LN18VGW MSZ-LN25VGW
MSZ-LN18VGV MSZ-LN25VGV
MSZ-LN18VGB MSZ-LN25VGB
MSZ-LN18VGR MSZ-LN25VGR
MSZ-LN18VG2W MSZ-LN25VG2W
MSZ-LN18VG2V MSZ-LN25VG2V
MSZ-LN18VG2B MSZ-LN25VG2B
MSZ-LN18VG2R MSZ-LN25VG2R
Indoor power P.C. board
GND
Connector to indoor
electronic control
P.C. board (CN202)
Indoor electronic control P.C. board
Air purifying
device (CN1T1)
Indoor coil thermistor
RT12, RT13 (CN112)
Switch buzzer P.C. board
Emergency operation switch
(E.O.SW) (SW1)
i-see SENSOR motor (MT)
pin
i-see SENSOR
pin
pin
Display and receiver P.C. board
OBH766C
MSZ-LN35VGW
MSZ-LN35VGV
MSZ-LN35VGB
MSZ-LN35VGR
MSZ-LN35VG2W
MSZ-LN35VG2V
MSZ-LN35VG2B
MSZ-LN35VG2R
Varistor (NR11)
Fuse (F11)
5 V DC
12 V DC
Interlock
switch
(CN2T1) 12 V DC
pin
Vane motor (MV1)
(horizontal)
Vane motor (MV2)
(vertical)
MSZ-LN50VGW
MSZ-LN50VGV
MSZ-LN50VGB
MSZ-LN50VGR
MSZ-LN50VG2W
MSZ-LN50VG2V
MSZ-LN50VG2B
MSZ-LN50VG2R
Connector Terminal
Block (CN201)
Timer short mode point
TB (Refer to 8-1.)
GND
5 V DC
Room temperature
thermistor RT11 (CN111)
42
MSZ-LN60VGW
MSZ-LN60VGV
MSZ-LN60VGB
MSZ-LN60VGR
MSZ-LN60VG2W
MSZ-LN60VG2V
MSZ-LN60VG2B
MSZ-LN60VG2R
Indoor fan motor
(CN211)
(+)0 or 15 V DC
(+)3-6 V DC
15 V DC
(–) GND (high-
voltage DC)
325 V DC
Resistor (R111)
(MSZ-LN18/25/35/60)
Reactor (L112)
(MSZ-LN50)
Room temperature thermistor (RT11)
Indoor coil thermistor (RT12, RT13)
Temperature (°C)
Connector to indoor
power P.C. board
(CN102)
Cut the jumper wire JR24
when the room tempera-
ture does not reach the set
temperature during heating
operation.
(Refer to 8-6.)
To disable "Auto restart
function", cut the Jumper
wire to JR77. (Refer to 8-4.)
pin
pin