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102
11.2. Troubleshooting-2 (with an error message on PC)
Error Code
ST1 ST2 ST3 ST4
Possible Cause
Recommended action
Remarks
U11(Paper Feed Jam:
Paper did not reach the
Waiting Sensor)
Paper did not reach the
Waiting Sensor)
11
00
00
00 1. Paper Feed Roller module or
DFP Roller is not assembled
properly.
properly.
1. Reassemble the rollers.
2. Check the paper feed mechanism from the
Paper Feed Motor's gear to Paper Feed
Roller's gear.
2. Check the paper feed mechanism from the
Paper Feed Motor's gear to Paper Feed
Roller's gear.
2. Rollers (Paper Feed,
Separation, DFP) are dirty.
1. Clean the rollers. (See Sec.9.)
2. Set “After Clean Roller Counter” to zero
2. Set “After Clean Roller Counter” to zero
(0) from the operation panel. See 16.
Appendix (Operating Manual P.76 ).
Appendix (Operating Manual P.76 ).
3. Rollers have reached their life
expectancy.
1. Replace the Paper Feed, Separation, and
DFP Rollers after checking each roller
configuration and Scanner Counter of
Service Utility software.
2. Set “After Replace Roller Counter” to zero
DFP Rollers after checking each roller
configuration and Scanner Counter of
Service Utility software.
2. Set “After Replace Roller Counter” to zero
(0) from the operation panel. See 16.
Appendix (Operating Manual P.82 ).
Appendix (Operating Manual P.82 ).
4. Paper dust exists on or around
the Waiting Sensor.
1. Clean up the dirt with cleaning paper or
cotton swab or soft and dry cloth.
(See Sec 9.)
(See Sec 9.)
2. Execute “Key / Sensor” tests in Sec. 10.3.7.
and “Sensor sensitive level” in Sec.
10.3.8. to check the Waiting Sensor
condition.
10.3.8. to check the Waiting Sensor
condition.
5. Waiting Sensor does not work
correctly.
1. Execute Key/Sensor tests in Sec. 10.3.7.
and “Sensor sensitive level” in Sec.
10.3.8. to check the Waiting Sensor
condition.
10.3.8. to check the Waiting Sensor
condition.
2. Check the mounting of the lens of the waiting
Sensor.
3. Check the following connection and
soldering condition on each connector.
soldering condition on each connector.
a. CN3750 (USS(R) / WAITING SENSOR
Board) to CN3005 (UPPER RELAY Board)
b. CN3004 (UPPER RELAY Board) to
CN19 (CONTROL Board)
4. Check the following signals.
a. WAITING signal CN19-29th pin:
Approx. 5 V (no paper on the Sensor)
b. Reference signal for the WAITING signal
Approx. 5 V (no paper on the Sensor)
b. Reference signal for the WAITING signal
on the CONTROL Board.
IC43-3rd pin: Approx. 2.5 V
IC43-3rd pin: Approx. 2.5 V
c. Comparator output IC43-1st pin: 5 V
(no paper on the sensor)
5. Replace faulty parts or cables.
6. Paper Feed Motor does not work
properly.
1. Check the motor mechanism by carrying out
“Feed motor” test. (Sec. 10.3.7.)
2. Check the connection between Paper feed
motor and CN2014 (DRIVE Board)
3. Try to exchange two of FFC cable between
the DRIVE Board and the CONTROL Board
(If repaired, FFC cable breakage)
(If repaired, FFC cable breakage)
4. Replace the paper feed motor cable.
5. Replace the paper feed motor.
6. Replace the DRIVE Board.
5. Replace the paper feed motor.
6. Replace the DRIVE Board.
U12 (Conveyor Jam1:
Paper did not reach the
Slip Detect Sensor.)
Paper did not reach the
Slip Detect Sensor.)
12
xx
00
00
1. Document remains between
Waiting Sensor and Slip Detect
Sensor.
Sensor.
Remove the document from the scanner.
2. Paper dust exists on or around
the Slip Detect Sensor.
1. Clean up the dirt with cleaning paper or
cotton swab or soft and dry cloth.
(See Sec. 9.)
(See Sec. 9.)
2. Execute “Key/Sensor” tests in Sec. 10.3.7.
and “Sensor sensitive level” in Sec.
10.3.8. to check the sensor condition.
10.3.8. to check the sensor condition.
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