Fault Isolation Procedure For Fax - Xerox Phaser 6600 Service Manual

Fault Isolation Procedure for FAX

Because a FAX is composed of multiple blocks, pinpointing a fault is problematic.
Fault Occurs
First, try using the copy function. If the copy function's printing results are correct, the probability of a
fault in the FAX itself is low. The fault is likely in the telephone line or receiving FAX.
If the fault is in the telephone line, first retry sending. If there is no improvement, contact the
telephone company.
If the copy function's printing results are incorrect, it can be determined if the fault is in the scanner or
printer by operating each unit separately via a computer.
Send Fault
Problem with printing quality at receiving a FAX, such as corrupt image, lines in image, or top/bottom
cut off.
• If copy function is normal
Cause: Degraded telephone line connection caused by noise, etc.; or a fault in receiving FAX's
printer.
Corrective Action: Determine whether fault is in telephone line or at receiving FAX by trying copy
function at receiving FAX.
Notes:
• If the telephone line condition is degraded, white horizontal lines, missing rows, and/or
cut-off top/bottom may occur.
• Branch connections or incoming call (call waiting) may also cause image corruption.
• If copy function is faulty
Cause: Dirt or fault in scanner.
Corrective Action: Clean platen glass or repair scanner. If the original is being sent from the
DADF, try executing a copy with the original placed on the platen glass. If this solves the problem,
the fault is in the DADF.
Cannot dial
Cause: Incorrect connection. Incorrect setup of dial type and/or line type.
Corrective Action: Correct the connection. Reset the dial type and/or line type to correct settings.
Notes:
• If the telephone line condition is degraded, white horizontal lines, missing rows, and/or
cut-off top/bottom may occur.
• Branch connections or incoming call (call waiting) may also cause image corruption.
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Error Troubleshooting
Phaser 6600 and WorkCentre 6605
Service Manual
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