Troubleshooting Guide; Starting Troubleshooting; Outline - Panasonic UF-5500 Service Manual

UF-5500 / 4500

11 Troubleshooting Guide

11.1. Starting Troubleshooting

11.1.1. Outline

Troubleshooting is for recovering quality and reliability by determining the broken component and replacing, adjusting or cleaning it
as required. First, determine the problem then decide the troubleshooting method. If you have difficulty finding the broken part,
determine which board is broken. (For example: the Main PCB, Sensor PCB, etc.) The claim tag from a customer or dealer may use
different expressions for the same problem, as they are not a technician or engineer. Using your experience, test the problem area
corresponding to the claim. Also, returns from a customer or dealer often have a claim tag. For these cases as well, you need to
determine the problem. Difficult problems may be hard to determine, so repeated testing is necessary.
Determine the symptom and the troubleshooting method.
Good!
Example of LCD display
FEB-25 15:31
15%
OK
Does the unit produce
normal copies?
Yes
Troubleshoot communication
problems (transmission,
reception, dialing, polling,
information codes, or
diagnostic codes.)
(Refer to Communications.)
CROSS REFERENCE:
Information Codes (INFO. CODES) (P.200)
Simplified Troubleshooting Guide (P.127)
Communications (P.154)
START
Power on
Look at the LCD.
Check the 3-digit INFO.CODE
on the display
If the INFO.CODE are displayed,
correct them according to
each error item.
(Refer to Imformation Codes.)
No
Does the original document
feed through correctly?
Yes
Does the recording paper
exit the unit?
Yes
Troubleshoot printed
copy quality problems
(Refer to Simplefied
Troubleshooting Guide.)
124
Plug in the AC cord.
LCD has no reaction
or improper display
1
No
Troubleshoot the Document
Feeder
(Refer to Simplefied
Troubleshooting Guide.)
No
Check for recording
paper path problems.
*1) Imformation Codes
*2) Simplefied Troubleshooting Guide
*3) Communications
AC