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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.
CROSS REFERENCE:
Information Codes (INFO. CODES)
Simplified Troubleshooting Guide
Plug in the AC cord.
Look at the LCD.
AC
START
Power on
If the INFO.CODE are displayed,
correct them according to
each error item.
(Refer to Imformation Codes.
)
Good!
Example of LCD display
FEB-25 15:31
15%
LCD has no reaction
or improper display
Check the 3-digit INFO.CODE
on the display
1
Does the original document
feed through correctly?
Does the recording paper
exit the unit?
Troubleshoot printed
copy quality problems
(Refer to Simplefied
Troubleshooting Guide.
)
Troubleshoot the Document
Feeder
(Refer to Simplefied
Troubleshooting Guide.)
Check for recording
paper path problems.
Does the unit produce
normal copies?
Troubleshoot communication
problems (transmission,
reception, dialing, polling,
information codes, or
diagnostic codes.)
(Refer to Communications.
)
Yes
Yes
No
No
Yes
No
OK
*1) Imformation Codes
*2) Simplefied Troubleshooting Guide
*3) Communications
Summary of Contents for UF-4500
Page 180: ...180 UF 5500 4500 ...
Page 248: ...248 UF 5500 4500 13 5 Test Chart 13 5 1 ITU T No 1 Test Chart ...
Page 249: ...249 UF 5500 4500 13 5 2 ITU T No 2 Test Chart ...
Page 281: ...281 UF 5500 4500 10 10 11 15 12 17 18 19 20 21 22 23 24 28 29 30 27 25 26 21 13 14 16 30 ...
Page 287: ...287 UF 5500 4500 130 131 132 133 134 135 136 137 138 139 140 141 PCB2 A UF 5500 only CN1 ...
Page 297: ...297 UF 5500 4500 ...
Page 305: ...305 UF 5500 4500 ...
Page 311: ...311 UF 5500 4500 501 502 503 504 506 507 505 508 509 511 510 514 513 512 P51 P53 P54 A51 P52 ...
Page 362: ...362 UF 5500 4500 ...