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Important safety instructions
1 Read these safety instructions and refer to them later if you have any questions.
2 Follow all warnings and instructions marked on the FAXPHONE B640.
3 Place the FAXPHONE on a level surface. Do not place it on an unstable cart, stand, or table. If the
FAXPHONE B640 falls, serious damage could occur.
4 Do not use the FAXPHONE B640 near water.
5 Slots and openings on the cabinet and on the back or bottom are provided for ventilation. To ensure
reliable operation of the FAXPHONE B640 and to protect it from overheating, do not block or cover these
openings. Do not block the openings by placing the unit on a bed, sofa, rug, or other similar surface, or
near a radiator or heat register. Do not place the FAXPHONE B640 in a closet or built-in installation
unless proper ventilation is provided.
6 Operate the FAXPHONE B640 only from the type of power source indicated on the unit’s label. If you are
not sure of the type of power available, consult your dealer or local power company.
7 The FAXPHONE B640 is equipped with a 3-prong, grounding-type plug; the plug has a third (grounding)
pin. This plug will only fit into a grounding-type outlet. This is a safety feature. If you are unable to insert
the plug into your outlet, contact an electrician to replace your outlet (do not use a 3-to-2 adapter). Do not
defeat the safety purpose of the grounding-type plug.
8 Do not allow anything to rest on the power cord, and do not locate the FAXPHONE B640 where the cord
will be walked on.
9 If you use an extension cord with the FAXPHONE B640, make sure that the total of the ampere ratings on
the products plugged into the extension cord does not exceed the extension cord ampere rating. Also,
make sure that the total of all products plugged into the wall outlet does not exceed the current amper-
age of the circuit breaker.
10 Do not push objects of any kind into the slots or openings on the cabinet as they may touch dangerous
voltage points or short out parts, which could result in a risk of fire or electric shock.
11 Do not spill liquid of any kind on the FAXPHONE B640. If you spill liquid or if any substance falls into the
unit, immediately unplug the FAXPHONE B640. Call your Canon Authorized Service Facility (ASF).
12 Unplug the FAXPHONE B640 from the wall outlet before cleaning. See pp. 88 and 89 for details.
13 Except as explained elsewhere in this manual, do not attempt to service the FAXPHONE B640 yourself.
Opening and removing interior covers may expose you to dangerous voltage points or other risks. Refer
all servicing to a Canon Authorized Service Facility (ASF).
14 Unplug this product from the wall outlet and refer servicing to qualified service personnel under the
following conditions:
• When the power cord or plug is damage or frayed.
• If liquid has been spilled into the unit.
• If the FAXPHONE B640 has been exposed to rain or water.
• If the FAXPHONE B640 does not operate normally when you have followed the operating instructions.
Adjust only those controls that are covered by the operating instructions in this manual. Improper
adjustment of other controls may result in damage and many require extensive work by a qualified
technician to restore the product to normal operation.
• If the FAXPHONE B640 has been dropped or the cabinet has been damaged.
• If the FAXPHONE B640 exhibits a distinct change in performance, indicating a need for service.
You must register your fax number, your name or company name, and the date and time in the FAXPHONE
B640 before you use it.
This is required by the FCC rules governing the use of fax equipment. See pp. 36, 37, and 38 for details.