Mitsubishi Electric CP-D70DW Service Manual page 84

LIVE
MAIN CIRCUIT
AC100 -
AC240V
L
L
FUSE
POWER SW LINE FILTER
F9F1 BRIDGE-DIODE
SW9F1 L9F2 L9F3
D901
N
N
FG
SUB CIRCUIT
FUSE
F9S1
PCB-POWER BLOCK DIAGRAM
Starting
PFC CIRCUIT
resistance
380Vdc R908,R909,R918,R919
PFC
COIL CHOKE
DIODE
L9A1 Drain
D9A1
Starting Drain
PFC FET MAIN FET
resistance
Q9A1,Q9A2 Q901
R9A4,R9A5,R9D2
2SK2847
Vcc
Vcc
THERMAL SW
POWER Z9A1(For
FACTOR Q9A1,Q9A2)
MAIN
CONVERTER
CONVERTER
IC9A1
F/B
IC901
OVP
AC100Vinput 140Vdc
AC240Vinput 340Vdc
FUSE
BRIDGE-DIODE
F9S3
D9S1
Drain
Starting diode
D9S4
SUB-HIC
IC9S1
FUSE
F9S2
PCB-POWER
LIVE ISOLATED
24Vdc
MAIN TRANS
RELAY POWER
T901
K951
ISOLATION
THERMAL SW
FUSE
IC952(For T901)
F951
PHOTO ERROR IC
COUPLER IC951
F/B
HA17431PA
PC902
DC-DC 5V
ISOLATION
IC953
OVP OVP DETECTION
PHOTO D953(For 24V)
COUPLER
D955(For 5V)
PC901
THERMAL
ISOLATION DETECTION
IC952(For T901)
RELAY POWER
K9S1
ISOLATION
S3.3Vdc
SUB TRANS
T9S1
ISOLATION
Vcc
PHOTO
F/B
ERROR IC
COUPLER
IC9T1
PC9S1
ISOLATION
LIVE
ISOLATED
24Vdc
PCB DIGITAL
HEAD24Vdc
THERMAL HEAD
PCB JOINT
THERMAL HEAD
Open
HEAD RELAY ON/OFF
HEAD ADJ
5Vdc
PCB DIGITAL
MAIN CIRCUIT ON/OFF
FAN_LOCK
24Vd
POWER FAN 1
POWER FAN 2