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109
2. One or more of the Bent Paper
Sensors do not work correctly
1. Execute “Key/Sensor” test in Sec. 10.3.7.
to check Bent Paper Sensors' condition while
covering the sensors with clean white paper.
covering the sensors with clean white paper.
2. Check the mounting of the left and right
BENT PAPER S SENSOR Board and BENT
PAPER R SENSOR Board.
PAPER R SENSOR Board.
3. Check the following connections and
soldering condition on each connector.
a. CN3000 (UPPER RELAY Board) to
CN5000 (BENT PAPER R SENSOR
Board)
b. CN5001 (BENT PAPER R SENSOR
Board) to CN5020 (BENT PAPER S
SENSOR Board)
a. CN3000 (UPPER RELAY Board) to
CN5000 (BENT PAPER R SENSOR
Board)
b. CN5001 (BENT PAPER R SENSOR
Board) to CN5020 (BENT PAPER S
SENSOR Board)
4. Check the following parts' soldering condition
to repair it.
a. UPPER RELAY Board
IC3004 (4 to 7, 9, and 10th pins)
IC3005 (2 to 5, 18, and 19th pins)
IC3000 to IC3003, IC3007, IC3008,
Q3000, Q3001, Q3004, Q3005, and
their surrounding circuits.
a. UPPER RELAY Board
IC3004 (4 to 7, 9, and 10th pins)
IC3005 (2 to 5, 18, and 19th pins)
IC3000 to IC3003, IC3007, IC3008,
Q3000, Q3001, Q3004, Q3005, and
their surrounding circuits.
5. Check the following signals of UPPER
RELAY Board.
a. CN3000-4,10th pin : 12 V
b. CN3000-3rd pin (BPS_D_L): See Fig.2.
c. CN3000-9rd pin (BPS_D_R): See Fig.2
a. CN3000-4,10th pin : 12 V
b. CN3000-3rd pin (BPS_D_L): See Fig.2.
c. CN3000-9rd pin (BPS_D_R): See Fig.2
6. Replace faulty parts or boards.
U28 (Feed tray is full)
26
00
00
00 1. The feed tray is full.
Remove the documents from the tray, open the
ADF door, and then close it.
ADF door, and then close it.
2. Hopper Upper Limit Sensor does
not work correctly.
1. Check the following connection and solder-
ing condition on each connector.
a. CN5090 (Hopper Upper Limit Sensor
a. CN5090 (Hopper Upper Limit Sensor
Board) to CN3001 (UPPER RELAY
Board).
Board).
b. CN3004 (UPPER RELAY Board) to
CN19 (CONTROL Board).
2. Check the soldering condition of
IC32 (Control Board).
U30 (ADF Door was
open.)
open.)
20
00
00
00 1. Door is not completely closed.
Close the door completely.
2. Door Switch (Micro switch) does
not work correctly.
1. Execute “Key/Sensor” in Sec. 10.3.7. to
check the door switch ON/OFF condition.
2. Check the condition between the Door
Switch and CN2005 on DRIVE Board.
3. Check the Door Switch mechanical
condition.
4. Replace a faulty cable.
5. Replace the Door Switch.
5. Replace the Door Switch.
3. The monitor circuit that checks
the door ON/OFF condition is
broken.
broken.
1. Execute “Key/Sensor” in Sec. 10.3.7. to
check the door switch ON/OFF condition.
2. Check CN2005-2nd pin: 24 V.
3. Check CN2009-2nd (DOOR signal).
3. Check CN2009-2nd (DOOR signal).
+5 V (when the door is open)
0 V (when the door is closed)
0 V (when the door is closed)
4. Replace a faulty cable.
5. Replace the DRIVE Board.
6. Replace the CONTROL Board.
5. Replace the DRIVE Board.
6. Replace the CONTROL Board.
U32 (Post-imprinter
door was open.)
door was open.)
22
00
00
00 1. Door is not completely closed.
Close the door completely.
2. Door Switch (POST-IMPRINTER
DOOR SENSOR Board) does
not work correctly.
not work correctly.
1. Execute “Key/Sensor” in Sec. 10.3.7. to
check the Post-Imprinter door switch ON/
OFF condition.
OFF condition.
2. Check the condition between the POST-
IMPRINTER DOOR SENSOR Board and
CN6 on CONTROL Board.
CN6 on CONTROL Board.
3. Replace a faulty cable.
4. Replace the POST-IMPRINTER DOOR
4. Replace the POST-IMPRINTER DOOR
SENSOR Board.
5. Replace the CONTROL Board.
Error Code
ST1 ST2 ST3 ST4
Possible Cause
Recommended action
Remarks
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