4-20 Phaser 6121MFP Service Manual
General Troubleshooting
Noise
If electronic equipment (television, computer, microwave, etc.) or devices equipped
with motors are located near a Fax, noise from the electronic equipment may
degrade the line condition.
Also, a telephone line, acting as an antenna, may absorb electric waves generated
from wireless or broadcasting equipment.
Because Fax data is audio data, the line quality affects the quality/stability of
image data as well as that of conversation.
Printer Doesn't Go Into Off-Hook State
Use the following procedure if the printer doesn't go into Off-Hook state when you
pick up the phone.
Initial Actions
• Cycle printer power
• If the problem persists, follow the procedure.
Troubleshooting Procedure Table
Step Action and Questions Yes No
1 Is the handset broken? Replace the
handset.
Go to step 2.
2 Try each of the following settings for
Soft SW16(6-8) and check if the
problem is corrected:
000
001
010
101
Is the problem still occurring?
Go to step 3. Complete.
3 Check the Fax Control Board for correct
installation and reseat it.
Is the problem still occurring?
Go to step 4. Complete.
4 Replace the Fax Control Board.
Is the problem still occurring?
Have the input
current from
the phone line
checked by a
qualified
professional.
Complete.
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