63
3. Starting Sensor does not
work correctly.
1. Execute "Key / Sensor" test in Sec.
Test (P. 47 ) to
check the sensor condition.
2. Check the sensor alignment is proper (whether the
sensor direction faces to its light guide.)
3. Check the following connection and soldering con-
dition on each connector.
CN2301 (STARTING SENSOR Board) to CN9
(CONTROL Board)
4. Check the following signals
a. STARTING input level. (CN9-7th)
2.5 V - 3.3 V
(when nothing on the Starting Sensor)
b. Check the STARTING LED level on the
CONTROL board.
(1). IC24
(2). IC42
c. Check the STARTING LED level.
(CN9-6th)
1.9V - 2.6V
6. Replace faulty parts or cables.
4. A Dust exists around Paper
Sensor or Starting Sensor to
prevent the sensor from
working correctly.
1. Sweep the dust out of the sensor with a cotton
swab.
2. Perform the "Key / Sensor" test in Sec.
Test (P.4 7).
U12:
Conveyor
Jam (Short
interval between
documents.)
12 01 00 00 1. Document length is longer
than the paper length set on
the PC.
Set the parameter of the paper length on the PC, cor-
rectly.
2. Paper Feed Roller or Double
Feed Prevention Roller is not
assembled correctly.
1. Reassemble the rollers.
3. Rollers (Paper Feed, Double
Feed Prevention) are dirty.
1. Clean the Rollers.
2. After cleaning the Paper Feed Roller and Double
Feed Prevention Roller, perform the "Clear
Counter (After Clean Roller)" in the service utility
to clear the cleaning roller counter. (See.Scanner
Counter
(P. 46 ))
4. Rollers have reached their
life expectancy.
1. Replace the Paper Feed Roller and Double Feed
Prevention Roller after checking each roller config-
uration and Scanner Counter of Service Utility soft-
ware.
2. After replacing the Double Feed Prevention Roller
and Paper Feed Roller, perform "Clear Counter
(After Replace Roller)" in the service utility to
clear the roller replacement counter. (See.
Scanner
Counter
(P. 46 ))
U23:
Double Feed
error
1C 00 03 00 1. Thickness of the document
is out of specifications.
Only place documents that follow this scanner
specifications on the Feed Tray.
2. Paper Feed Roller or
Double Feed Prevention
Roller is not assembled
correctly.
1. Reassemble the rollers.
3. Rollers (Paper Feed,
Double Feed Prevention) are
dirty.
1. Clean the Rollers.
2. After cleaning the Paper Feed Roller and
Double Feed Prevention Roller, perform the "Clear
Counter (After Clean Roller)" in the service utility
to clear the cleaning roller counter.
(See
Scanner Counter (P. 46 ))
Error Code Possible Cause Check Point
Classified Code ST1 ST2 ST3 ST4
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