SQF-4-6
12 February 2007
FAULT CODE DESCRIPTION
SQF-012
Fault code SQF-012, indicates that the Roller motor (SQF-M4) had a Cycle time out.
Initial Actions
Check Fuse F2 on the Squarefolder Transformer.
Check Fuse F3 on the Squarefolder Transformer.
Enter the Service mode and select Roller motor (SQF-M4) in check motors.
Make sure that the Roller motor Rear Home position sensor (SQF-Q2) is installed correctly.
Make sure that the Roller motor Front Home position sensor (SQF-Q3) is installed correc-
tly.
Procedure
Enter the Service mode and select Roller motor Front Home position sensor (SQF-Q3) in check sensors. The Roller motor
Front Home position sensor indicates :1 when the sensor is blocked, and :0 when the sensor is unblocked?
Y N
1. Replace sensor SQF-Q3.
2. Disconnect plug D.P13 and D.P14 from PCB ”D”. Measure between J14-2 and J13-6 (5V and ground). The
voltage is approximately 5 VDC?
Y N
Replace PCB ”D”.
Disconnect plug from sensor SQF-Q3. Check wire for Continuity / Short circuit from the white wire Q3 to D.P13-8.
Is there Continuity and no Short circuit?
Y N
Replace wire Harness.
Connect plug D.P13 and D.P14 to PCB ”D”. Measure between the red wire Q3 and the black wire Q3 (5V and
ground). The voltage is approximately 5 VDC?
Y N
Replace wire Harness.
Replace PCB ”D”.
Enter the Service mode and select Roller motor Rear Home position sensor (SQF-Q2) in check sensors. The Roller motor
Rear Home position sensor indicates :1 when the sensor is blocked, and :0 when the sensor is unblocked?
Y N
1. Replace sensor SQF-Q2.
2. Disconnect plug D.P13 from PCB ”D”. Measure between J13-13 and J13-9 (5V and ground). The voltage is
approximately 5 VDC?
Y N
Replace PCB ”D”.
Disconnect plug from sensor SQF-Q2. Check wire for Continuity / Short circuit from the white wire Q2 to D.P13-5.
Is there Continuity and no Short circuit?
Y N
Replace wire Harness.
Connect plug D.P13 to PCB ”D”. Measure between the red wire Q2 and the black wire Q2 (5V and ground). The
voltage is approximately 5 VDC?
Y N
Replace wire Harness.
Replace PCB ”D”.
Pull the motor gently by hand. Are you able to pull the motor back and forth without using a lot of force?
Y N
Lubricate where needed.
Replace motor SQF-M4.
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