Xerox M20 - WorkCentre B/W Laser, Service Manual

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December 2006
6-29 WorkCentre M20, 4118, FaxCentre 2218 Family
GP 6, GP 7
General Procedures and Information
Silence Time
In ANS/FAX mode, after a call is picked up by the answering machine, the machine monitors
the line. If a period of silence is detected on the line at any time, the call will be treated as a fax
message and the machine will begin receiving.
Silence detection time is selectable between limited (approximately 12 seconds) and unlimited
time. When ‘12 sec’ is selected, the machine switches to receiving mode as soon as it detects
a period of silence. When ‘unlimited’ is selected, the machine waits until the answering opera-
tion is concluded even though a period of silence is detected. After the answering operation is
concluded, the machine switches to receiving mode.
Flash Upgrade
The firmware upgrade procedure has two methods, local and remote. For more information,
refer to Firmware Upgrade, GP 8.
Reset Passcode
Use this procedure to either disable or reset the system administrator passcode.
Memory Clear
Use this procedure to restore factory default settings. For details of the exact procedure, refer
to GP 5.
ADF Test
Use this procedure to test the ADF. For details of the exact procedure, refer to GP 24.
DADF Diagnostic
Use this procedure to test the DADF. For details of the exact procedure, refer to GP 25.
GP 7 Reports
Purpose
To give details of the information available in the reports function in service mode, GP 3:
• Protocol List
• Fax Phonebook
• Fax TX
• Fax RX
• Schedule Jobs
• System Data
• Fax TX Confirm
• Junk Fax List
• Email TX Report
• Billing/Counters
• Connect Page
• User Auth List
• Print All Reports
Protocol List
This list shows the sequence of the CCITT group 3 T.30 protocol during the most recent send-
ing or receiving operation. Use this list to check for send and receive errors. If a communication
error occurs while the machine is in TECH mode, the protocol list will print automatically, Figure
1.