SC TABLE
B147/B149/B190 4-22
SM
SC No.
Item
Definition
Possible Cause
Related
SCs
Troubleshooting Procedure
Type
SC
393-
001
TD sensor error
during warming
up
393-001: K
393-002: Y
393-003: C
393-004: M
The development-unit drive
starts. TD sensor signal is 0.78
V or less.
•
Loose cable
connection
•
Positioning plate out
of place
•
Defective TD sensor
•
Development unit not
found
1. Turn the main switch off and on.
2. Check that the development unit is
correctly installed.
3. Remove the development unit and
check the connector on the rear.
4. Check the positioning plate.
5. Replace the development unit.
D
SC
440-
001
Drum motor
error
440-001: Black
440-002: Color
No drum gear position sensor
signal is detected within 0.7
second (185 mm/s), 1.0
second (125 mm/s), or 2.0
seconds (62.5 mm/s).
•
Defective PCU
•
Defective drum motor
•
Defective drum gear
position sensor
1. Turn the main switch off and on.
2. Check and/or replace the PCU.
3. Check and/or replace the sensor.
D
SC
460-
001
Thermistor 1
error (open
circuit)
When the temperature
detected by thermistor 1,
which is at the left (fusing unit)
side of the laser optics unit, is
less than -30°C for 10 seconds
consecutively, the BCU
determines that the circuit is
opened and displays this SC
code.
•
Thermistor 1
defective
•
Cable connection
error
•
BCU defect
1. Turn the main switch off and on.
2. Check the cable connections.
3. Replace the thermistor.
4. Replace the BCU.
D
SC
460-
002
Thermistor 1
error (short
circuit)
When the temperature
detected by the thermistor 1,
which is at the left (fusing unit)
side of the laser optics unit, is
higher than 70°C for 10
seconds consecutively, the
BCU determines that the
circuit is shorted and displays
this SC code
•
Thermistor 1
defective
•
Cable connection
error
•
BCU defect
1. Turn the main switch off and on.
2. Check the cable connections.
3. Replace the thermistor.
4. Replace the BCU.
D
Содержание B147
Страница 1: ...B147 B149 B190 SERVICE MANUAL 001892MIUMIU RICOH GROUP COMPANIES...
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Страница 3: ...B147 B149 B190 SERVICE MANUAL RICOH GROUP COMPANIES...
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Страница 5: ...B147 B149 B190 SERVICE MANUAL 001892MIU...
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Страница 33: ...INSTALLATION...
Страница 34: ......
Страница 105: ...PREVENTIVE MAINTENANCE...
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Страница 112: ......
Страница 113: ...REPLACEMENT AND ADJUSTMENT...
Страница 114: ......
Страница 201: ...TROUBLESHOOTING...
Страница 202: ......
Страница 287: ...SERVICE TABLES...
Страница 288: ......
Страница 456: ......
Страница 457: ...DETAILED DESCRIPTIONS...
Страница 458: ......
Страница 589: ...SPECIFICATIONS...
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Страница 607: ...AUTO REVERSE DOCUMENT FEEDER B597...
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Страница 635: ...ONE TRAY PAPER FEED UNIT B601...
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Страница 647: ...TWO TRAY PAPER FEED UNIT B598...
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Страница 659: ...LARGE CAPACITY TRAY B600...
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Страница 681: ...TWO TRAY FINISHER B599...
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Страница 714: ......
Страница 715: ...BOOKLET FINISHER B602...
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Страница 720: ......
Страница 729: ...STAPLER UNIT SM 9 B602 Booklet Fin isher B602 13 Timing belt A 14 Gear B x 1 B602R920 WMF A B...
Страница 791: ...FAX OPTION TYPE 2238 B603...
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Страница 903: ...INTERNET FAX IFAX...
Страница 904: ......
Страница 950: ......
Страница 951: ...DataOverwriteSecurity Unit Type A B694 01 Type B B692 01...
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Страница 958: ......
Страница 980: ...TECHNICAL SERVICE BULLETINS...
Страница 1066: ...FIRMWARE HISTORY...