GE SX TRANSISTOR CONTROL IC3645SR4U404N2 Installation And Operation Manual page 31

DIAGNOSTIC STATUS CODES
SX TRANSISTOR CONTROL
Open thermal protector (TP) or
-41
transistor over temperature.
MEMORY RECALL
YES
SYMPTOM
Circuits valid
Reduced or no power to traction motor in control
for
range.
Traction
POSSIBLE CAUSE
Controller
Control is in thermal cut-back.
= Allow control to cool, status code should
Defective control.
= Replace controller unit.
TRACTION
STATUS CODE
Motor armature offset voltage is too
-42
high.
MEMORY RECALL
NO
SYMPTOM
Control will not operate.
Circuits valid
for POSSIBLE CAUSE
Defective control.
Traction
Controller
CORRECTIVE ACTIONS
disappear.
DESCRIPTION OF STATUS
CORRECTIVE ACTIONS
= Replace controller unit.
This status code will be displayed when the voltage at
the thermal protector is too high.
TROUBLE-SHOOTING DIAGRAM
KEY SWITCH
FU5
P2
SP
P5
TO
ACCESSORIES
P4
FU6
P3
PY7
PY12 P18 P17
P1
OSCILLATOR CARD
PY10
LEFT CONTROL
PY11
FU1
LINE
FU2
+ FU4
A1
P
POS A1 F1
POWER
-
CONNECTIONS
SP
LEFT CONTROL
NEG A2
F2
SP
P
CAUSE OF STATUS INDICATION
This status code will be displayed when the voltage at
the current sensor input is greater than 2.6 volts with
no current flowing in the motor circuit.
TROUBLE-SHOOTING DIAGRAM
FU5 KEY SWITCH
P2
P5
TO
ACCESSORIES
P4
FU6
P3
PY7
PY12
P18 P17
OSCILLATOR CARD
PY10
LEFT CONTROL
PY11
LINE FU1
FU2
FU4
+
A1 P
A1 F1
POS
POWER
-
CONNECTIONS
SP
LEFT CONTROL
NEG A2
F2
SP
P
Page 31
BRAKE SW.
P1
L
P3 P4 P5
P2 P6
P7 P10 P9 P12 P8
STEER
ANGLE
ACC POT
BDI INTERRUPT
POS A1 F1
POWER
CONNECTIONS
RIGHT CONTROL
NEG A2
F2
BRAKE SW.
P1
SP
L
P4
P1 P2 P6 P3 P5
P7 P10 P9 P12 P8
ACC POT
BDI INTERRUPT
POS A1 F1
POWER
CONNECTIONS
RIGHT CONTROL
A2
NEG F2
January 2000
POT
STEER
ANGLE
POT