Ricoh DD 5450, Field Service Manual, Page: 265 / 403

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Chapter 7 Troubleshooting Guide
Procedures Cause/Detective section Items to be checked Result Countermeasure
1
24V power supply
Measure the voltage between
CN51-5 (+24) and CN51-1 (GND)
of the 24V power supply with a
tester. Is it +24V?
NO
Measure the voltage between L
and N of the 24V power supply
with a tester. If it is AC100V,
replace the 24V power supply.
YES Follow the procedure 2.
2
Drive PCB unit
Measure the voltage between CN5-
4 (+) and CN5-2(GND) of the drive
PCB unit with a tester. Is it +24V?
NO
Replace the drive PCB Unit.
3
Does the lamp light up when CN6-
6 of the drive PCB unit produces a
short circuit to GND?
YES
Follow the procedure 5.
4
Drive PCB unit
Does replacing the drive PCB unit
solve the problem?
YES Finish
Main PCB unit
NO Replace the main PCB Unit.
5
Lamp
Does replacing the lamp solve the
problem?
YES
Finish
6
Motors
Remove CN5 of the drive PCB unit
and follow the procedure 1.
Is the v24V?
YES
At the CN5 bundled wire or
24V produces a short-
circuit to GND.
(1) Lamp Does Not Light Up
1
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Error item List
Item Remarks No. Page
Lamp does not Light Up
(1)
Optical System Dose Not Move Forward/Backward
(2)
Malfunction of Master Feeding Clutch
(3)
Malfunction of Master Stepping Motor
(4)
Malfunction of Eject (Roll-up) Motor
(6)
Paper Jams in the Paper Feed Side
(16)
Paper Jams in the Paper Eject Side
(17)
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Message List
Message Remarks No. Page
E036 Error : USB host
(37)
E037 Error : Resolution
(38)
E038 Error : PMIC (main PC anomaly)
(39)
E039 Error : Relay PCB communication (40)
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