Ricoh DD 5450, Field Service Manual, Page: 268 / 403

266
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Chapter 7 Troubleshooting Guide
1
(6) Malfunction of Eject Motor
Procedures Cause/Detective section Items to be checked Result Countermeasure
1 Eject motor
Does voltage between drive PCB
unit CN3-17 (+) and -16(GND)
show 24V when eject motor is
operated with HELP-009?
YES
Replace the eject motor.
2 24V power supply
Measure the voltage between
CN51-5 (+24) and CN51-1 (GND)
of the 24V power supply with a
tester. Is the v24V?
NO
Replace the 24V power supply.
3
Drive PCB Unit
Does replacing the drive PCB unit
solve the problem?
YES
Finish
Main PCB unit
NO
Check bundled wire and
connectors and then replace
main PCB unit.
HELP-009→See page 313
(7) “ADD PAPER TO FEED TRAY” is displayed
Procedures Cause/Detective section Items to be checked Result Countermeasure
1
Paper sensor When paper sensor is checked with
HELP-006, is “1” displayed if paper
is absent and is “0” displayed if
present?
NO Replace the paper sensor.
Main PCB unit YES
Check bundled wire and
connectors and then replace
main PCB unit.
(8) “CLOSE FRONT COVER is displayed
HELP-006→See page 308
Procedures Cause/Detective section Items to be checked Result Countermeasure
1
Front cover sensor When front cover sensor is checked
with HELP-021, is “0” displayed
if front cover is opened and is “1”
displayed if closed?
NO Replace the front cover sensor.
Main PCB unit YES
Check bundled wire and
connectors and replace main
PCB unit.
HELP-021→See page 326