Mita-Kyocera SO30 Service Bulletin
Chapter 4 TROUBLESHOOTING
Contents
Power Does Not Turn On 4-2
Paper Reverse Sensor Fault 4-3
Eject Paper Sensor Fault 4-3
Door Open/Close Switch Fault 4-4
Paper Feeding Motor Fault 4-4
Paper Reverse Motor Fault 4-5
Indexer Motor Fault 4-5
Face-Up Solenoid Fault 4-5
Observe the following precautions when performing the troubleshooting procedures in this
chapter.
When measuring voltages specified at various connector terminals, confirm that the connector
is making proper contact.
When handling the circuit board, be careful to avoid damage to the board from static electricÂity: before starting work, touch the printer’s metal chassis with your hand to discharge static.
4.1 Power Does Not Turn On
Possible Causes:
Specified voltage is not present at the mains outlet.
1
Solution: Advise the user that mains voltage is not present.
The power plugs at the printer, Mail Sorter or outlet are not connected correctly.
2
Solution: Re-insert the power plugs.
The Power-On signal is not being input because of bad connection at the interface connec-
3
tor.
Solution: Reconnect the interface connector
The Power-On signal is not available.
4
Solution: Turn on the printer, and measure the voltage on the Control Board between
connectors CN9-1 (RMOT) and CN9-3 (GND). If the voltage is not about 3V,
check the printer.
Blown fuse
5
Solution: Remove the Power Supply Un it and replace the fuse.
Power Supply Unit fault
6
Solution: Turn off the printer and remove connector CN9 from the Control Board.
Connect the power cord to the Power Supply Unit, tu rn th e printer on, and
measure the DC output at connector CN9 (be careful to avoid short circuits).
If the specified voltage is not present, replace the Power Supply Unit.
Wiring, DC Loads and Control Board
7
Solution: Turn off the p rinter, and ch eck th e wiring an d DC load s served by the Contro l
Board. If the wiring and DC loads check okay, replace the Control Board.
SO-30
4-2
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