U11; Troubleshooting-2 (With An Error Message On Pc) - Panasonic KV-S5076H Service Manual

10.2. Troubleshooting-2 (with an error message on PC)

Error Code
Classified Code ST1 ST2 ST3 ST4
U11(Paper feed jam): 11
Paper did not reach the
Waiting Sensor.)
Possible Cause
00 00 00 1. Paper Feed Roller module or
DFP Roller is not assembled
properly.
2. Rollers (Paper Feed,
Separation, DFP) are dirty.
3. Rollers have reached their life
expectancy.
4. Paper dust exists on or around
the Waiting Sensor.
5. Waiting Sensor does not work
correctly.
6. Paper Feed Motor does not work
properly.
Check Point
1. Reassemble the rollers.
2. Check the paper feed mechanism from the
Paper Feed Motor's gear to Paper Feed
Roller's gear.
1. Clean the rollers. (See Sec.7.)
2. Clear counter for cleaning roller to zero with
the service utility's operation in Sec.9.
1. Replace the Paper Feed, Separation, and
DFP Rollers after checking each roller
configuration and Scanner Counter of
Service Utility software.
2. Clear counter for replacing roller to zero with
the above service utility.
1. Clean up the dirt with cleaning paper or
cotton swab or soft and dry cloth.
(See Sec.7.)
2. Execute Key / Sensor and Sensor
Sensitive Level tests in Sec.9.3.6 to check
the sensor condition.
1. Execute Key/Sensor test in the Sec. 9.3.6 to
check the sensor condition.
2. Check the sensor alignment is proper
(whether the sensor direction faces to
its reflector.)
3. Check the following connection and
soldering condition on each connector.
a. CN2011 (USS / WAITING SENSOR
Board) to CN2034 (BENT RELAY Board)
b. CN2030 (BENT RELAY Board) to CN2007
(USS RELAY Board)
c. CN2006 (USS RELAY Board) to
CN1008 (CONTROL Board)
4. Check the following signals.
a. WAITING signal (CN2011-1st or
CN1008-5th pin)
 Approx. 1 V
(when nonexistence on the Waiting
Sensor)
b. Check the reference signal for the
WAITING signal on the CONTROL Board.
IC0024-5th pin: 1.5 V or less
IC0026-6th pin: Approx. 1.5 V
c. Check comparator output signal.
 IC0017-4th pin: 3.3 V
(when no document exists)
6. Replace faulty parts or cables.
1. Check the motor mechanism condition by
carrying out Feed Motor test. (See 9.3.6.)
2. Check the following connection and
soldering condition on each connector.
 Paper Motor to CN4005 (DRIVE Board)
3. Check the following signals on the
DRIVE Board.
 CN4005-1, 3, 4, and 6th pins: See Fig. 1.
4. Replace faulty cables.
5. Replace Paper Feed Motor.
119
Remarks