Xerox WorkCentre 5790 Series Service Manual page 612

Figure 1 Line 1 and line 2 test pads
Status Indicator RAPs
20H, 20J
20J Fax Problems on Digital Networks RAP
Use this RAP to isolate the problem when using digital networks.
Line 1 test pads 1, 2 and 3
The Fax option was designed as an analogue Group 3 device. This will have the best perfor-
mance when connected to a dedicated analog phone PSTN (Public Switched Telephone Net-
work) line or POTS (Plain Old Telephone System).
•
Line 2 test pads 4, 5 and 6
•
Initial Actions
Ensure that the electricity to the machine is switched off while performing tasks that do
not need electricity. Refer to
death or injury. Moving parts can cause injury.
•
•
•
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Procedure
NOTE: Refer to the
Perform the steps that follow:
1.
2.
3.
5.
May 2013
2-580
The Fax option will function on the following technologies:
– ADSL - Asymmetric Digital Subscriber Line
– DSL - Digital Subscriber Line
– VOIP - Voice Over Internet Protocol
– T1 Trunk / E1 Trunk (Europe).
NOTE: Due to the compression used on the technologies. The level of performance
will be lower than on a PSTN or POTS.
The Fax option will not function on the following technologies:
– ISDN - Integrated services Digital Network
– FOIP - Fax Over Internet Protocol, (T.38 protocol).
WARNING
GP 14. Disconnect the power cord. Electricity can cause
Switch off the machine, then switch on the machine,
Check with the customer or IT person on what network the Fax service is being used and
what is the quality of service.
Check that an analogue adapter or a connection for analogue terminals are available.
Ask the customer to check with service provider that an analogue port for Fax service has
been provided and enabled.
Fax NVM Document for the fax NVM values.
Perform the 20A Fax Entry RAP.
Request the latest SPAR release.
If a communication fault occurred while sending the fax, decrease the transmission speed
by disabling V34 (Super G3).
4.Reset the value at the following locations:
• 20-287 T30MaxSpeedL1Tx = 11 (14400)
• 20-288 T30MaxSpeedL2Tx = 11 (14400)
• 20-289 T30MaxSpeedL1Rx = 11 (14400)
• 20-290 T30MaxSpeedL2Rx = 11 (14400)
If problems are still not resolved after these actions, then escalate the problem using the
normal escalation process.
GP 14.
Xerox® WorkCentre® 5790 Family