Sharp FO-2150CM - Manual (Page 19)

UX-2200CMU/CMC
FO-2150CMU/CMC
5. Paper Path Service Check
Examine the machine for the following before you being this service check:
• Check the entire paper path for obstructions
• Be sure the correct type of paper is being used.
• Be sure the printer is installed on a flat surface.
6. Power Service Check
FRU
Large and Small Feed
Rollers
Small Feed Roller
Springs
Auto Sheet Feeder
Mid-Frame Asm
Access Cover Asm
End-of-Forms Flag
Action
Check for wear and binds.
Check for damage.
Check the pick rollers for wear.
Check the following for wear:
• Exit roller
• Star rollers
Check for binds or damage.
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5
FRU
Power Supply
Printhead Cable
Carrier Home Sensor
Parallel Cable
System Board
Action
Disconnect N1 from the system board and check the following voltages
on the power supply cable:
• CNPRT-22 to Gnd =+5V dc
• CNPRT-26 to Gnd =+24V dc
If you do not have correct voltage,replace the power supply.
Be sure to unplug the machine before you reconnect the power supply
to the system board.
Turn off the printer.Disconnect one of the printhead cables and turn on
the printer. Look for a symptom change. Check the failing part for
shorts and replace as necessary.
Repeat this procedure for the carrier home sensor and parallel cable.
If the symptom has not changed,replace the system board.
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