Mitsubishi Electric MLZ-KY06NA - U1 Service Manual page 34

9-7. TEST POINT DIAGRAM AND VOLTAGE
MLZ-KY06NA
Indoor electronic control P.C. board
CN105
Connector to
optional
interface
5 V DC
CN211
Indoor fan motor
294/325 V DC
(-) GND
(High voltage DC)
15 V DC
(+) 3 - 6 V DC
(+) 0 or 15 V DC
12 V DC
CN151 Vane motor connector
Receiver P.C. board
CN301
Indoor electronic control P.C.
board connector
Display P.C. board
SW301
Emergency operation switch
OBH922
CN1N1
Connector to drain pump
R111
CN1J1
Connector to display
P.C. board
To disable "Auto restart
function", cut the
Jumper wire to JR77.
(Refer to 7-3.)
CN302
Indoor electronic control P.C.
board connector
Factory setting
(Do not change the setting.)
SW101
CN202
Serial signal
CN109
Connector to
receiver P.C. board
Timer short
mode point
(2 points)
(Refer to 7-1.)
Indoor coil thermistor [RT12 (MAIN), RT13 (SUB)]
Room temperature thermistor (RT11)
Temperature (ºC)
34
ON
NR11
Varistor
1 2 3 4 5 6
OFF
F11 FUSE
T3.15AH250V
CN201
Power supply
input
208/230 V AC
CN1M1
Connector to
drain sensor
CN111
Room tempera-
ture thermistor
RT11
CN112
Indoor coil ther-
mistor RT13
(SUB)
Indoor coil ther-
mistor RT12
(MAIN 1)
JR05
}
JR06
CN106
Connector to
display P.C.
board
GND
SWV1
Dip switch SW3
Changing air- (Increase air flow
flow direction volume)
(Refer to 7-5.) (Refer to 7-4.)
Drain sensor thermistor
2 0
15
10
5
0
0 10 20 30 40 50 60 70
Temperature (ºC)
Modifica-
tion
point for
individual
operation
(Refer to
7-2.)