Read Panasonic KV-S7065C (serv.man4) Service Manual online
Error Code
Possible Cause
Check Point
Remarks
Classified Code
ST1
ST2
ST3
ST4
U20: Skew error
19
00
00
00
5. Paper dust exist on or around a
Skew Sensor.
Skew Sensor.
Blow off the dirt on the surface of the sensor
with the accessory blower. (See Sec.7.2.)
with the accessory blower. (See Sec.7.2.)
6. The Skew (L) Sensor does not
work properly.
work properly.
1.
Execute Key / Sensor and Sensor
Sensitive Level tests in Sec.9.3.6 to
check the sensor condition.
Sensitive Level tests in Sec.9.3.6 to
check the sensor condition.
2.
Check whether the sensor alignment is
proper (whether the sensor direction faces
to its reflector.)
proper (whether the sensor direction faces
to its reflector.)
3.
Check the following connection and
soldering condition on each connector.
soldering condition on each connector.
a.
CN5012 (STARTING SENSOR Board)
to CN5017 (SENSOR RELAY Board)
to CN5017 (SENSOR RELAY Board)
b.
CN5022 (SENSOR RELAY Board) to
CN1009 (CONTROL Board)
CN1009 (CONTROL Board)
4.
Check the following signals.
a.
SKEWL signal (CN5012-4
th
pin,
CN5017-4
th
pin, CN5022-9
th
pin,
CN1009-14
th
pin)
→ 1.5 V or less (when none exists on
the Skew (L) Sensor)
the Skew (L) Sensor)
b.
Check the reference signals for the
SKEWL signal on the CONTROL
Board.
SKEWL signal on the CONTROL
Board.
→ IC1015-9
th
pin: 1.5 V or less
(After initializing)
→ IC1017-9
th
pin: Approx. 1.5 V
c.
Check comparator output signal.
→ IC1017-14
th
pin: 3.3 V (when no
paper exists)
5.
Replace faulty parts or boards.
7. The Skew (R) Sensor does not
work properly.
work properly.
1.
Execute Key / Sensor and Sensor
Sensitive Level tests in Sec.9.3.6 to
check the sensor condition.
Sensitive Level tests in Sec.9.3.6 to
check the sensor condition.
2.
Check whether the sensor alignment is
proper (whether the sensor direction faces
to its reflector.)
proper (whether the sensor direction faces
to its reflector.)
3.
Check the following connection and
soldering condition on each connector.
soldering condition on each connector.
a.
CN5012 (STARTING SENSOR Board)
to CN5017 (SENSOR RELAY Board)
to CN5017 (SENSOR RELAY Board)
b.
CN5022 (SENSOR RELAY Board) to
CN1009 (CONTROL Board)
CN1009 (CONTROL Board)
4.
Check the following signals.
a.
SKEWR signal (CN5012-2
nd
pin,
CN5017-2
nd
pin, CN5022-8
th
pin,
CN1009-15
th
pin)
→ 1.5 V or less (when none exists on
the Skew (R) Sensor)
the Skew (R) Sensor)
b.
Check the reference signals for the
SKEWR signal on the CONTROL
Board.
SKEWR signal on the CONTROL
Board.
→ IC1015-2
nd
pin: 1.5 V or less
(After initializing)
→ IC1017-5
th
pin: Approx. 1.5 V
c.
Check comparator output signal.
→ IC1017-2
nd
pin: 3.3 V (when no
paper exists)
5.
Replace faulty parts or boards.
119
KV-S7065CSERIES
Click on the first or last page to see other KV-S7065C (serv.man4) service manuals if exist.