4-3
Trouble-
shooting
19 April 2006
FAULT CODE DESCRIPTIONS
BK-003
Fault Code BK-003, indicates that the Infeed motor (BK-M1) has an Open circuit.
Initial Actions
Check fuse F2 on Transformer.
Procedure
Disconnect the motor plug M1. Enter Service mode and start Infeed motor (BK-M1) in check motors. Measure between the
orange wire M1 and the violet wire M1 (PWM 36V and ground). The voltage is approximately 36 VDC?
Y N
Disconnect plug B.P2 from PCB “B”. Measure between J2-1 and J2-8 (PWM 36V and ground). The voltage is
approximately 36 VDC?
Y N
Replace PCB “B”.
Replace wire Harness.
Replace motor BK-M1.
BK-002
Fault Code BK-002, indicates that the Infeed motor (BK-M1) has a Short circuit.
Initial Actions
Check fuse F2 on Transformer.
Procedure
Disconnect the motor plug M1. Run the Diagnostics again. Fault code BK-003 (Open circuit) is displayed?
Y N
Disconnect plug B.P2 from PCB “B”. Check wires for Short circuit across leads, the orange wire M1 to B.P2-8
(violet) and the violet wire M1 to B.P2-1 (orange). Is there a Short circuit?
Y N
Replace PCB ”B”.
Replace wire Harness.
Replace motor BK-M1.
BK-001
Fault Code BK-001, indicates that the Infeed motor (BK-M1) does not receive any displacement
pulses.
Initial Actions
Check fuse F2 on Transformer.
Enter the Service mode and select Infeed motor (BK-M1) in check motors.
Procedure
Disconnect the sensor plug Q2 to motor BK-M1. Measure between the red wire Q2 and the black wire Q2 (5V and Signal
ground). The voltage is approximately 5 VDC?
Y N
Disconnect plug B.P14 from PCB “B”. Measure between the J14-13 and J14-15 (5V and Signal ground). The
voltage is approximately 5 VDC?
Y N
Replace PCB “B”.
Replace wire harness.
Disconnect plug B.P14 from PCB “B”. Check wires for Continuity / Short circuit from the white wire Q2 to B.P14-14,
the black wire Q2 to B.P14-13, the red wire Q2 to B.P14-15. Is there Continuity and no Short circuit?
Y N
Replace wire harness.
1. Replace motor BK-M1.
2. Replace PCB “B”.
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