Hitachi SJ300 - Manual (Page 50)

SJ300-150 - 220HF , L300P-185 - 300HFR Circuit Diagram
J51
Option Board
Option Board
1 2
H I T A C H I
S T R
RUN STOP/RESE
FUNC
P
To
Ro
J61
Logic Board
J1
J1
OPTXC OPT1C
OPTXC OPT2C
TMC
SP SN RP SN
P24 PLC
FW 8 7 6 5 4 3 2 1 CM1 FM TH CM1 11 12 13 14 15 CM2 H O OI O2 L AM AMI AL2 AL1 ALO
Control Terminal Board
J21
CN1
PLUG OPEC
Digital
Operator
Plug
Main Board
R
S
T
G
N
G
+
+ +
+
J22
CT
J53
J54
J55
J10
J11
J12
J52 J41
Control Power
Board
DM Board
R
IGBT
J31
Thermistor
Flat Cable
J52 J41
T
DM
R T
Note: Control terminal symbol is SJ300
PD
V
W
U
FAN
FAN