Test Function - Canon FAX-B820 Service Manual

3.4 Test Function

3.4.1 User Test Print Function
User enabled Test print functions are as follow.
3.4.2 Service Test Functions
The fax functions for testing individual operations, such as below. See 3-2-4 Service Data Setting Method.
To leave the test mode, press the Function button, and then Clear button.
3.4.3 Test mode overview
Test mode can be executed by following the menu items from the display.
a) DRAM tests
Writes data to DRAM image storage areas and reads that data to check operations.
b) Modem, NCU tests
Test frequency, G3 signal transmission and CNG signal transmission.
c) Faculty tests
Test the operation of operation panel and sensor functions.
d) Remaining ink detection test
Tests level of remaining ink and initializes ink sensor.
e) Flash memory test
Performs READ/WRITE operation in flash memory TAM memory area, to check whether operation is correct or
not.
f) Printer test
Test the operation of the printer functions.
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