4-90 Phaser 6180MFP Multifunction Printer 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.
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