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Other tests in extended service mode
The chart below shows tests that can be performed in extended
service mode and a brief explanation of each test:
Table 16. Extended service mode tests
Test Explanation
Keypad test
Tests all keypad keys by pressing in sequence.
LCD test
Tests the control panel display.
Control panel test
Tests the control panel lights
Sensor states
Shows current detector activation levels. The control panel display shows the
percentage of time each detector is activated.
All LCD characters
Scrolls through the full list of control panel display characters.
Scanner plots
Tests and recalibrates the document scanner.
Scanner LED
After selecting this menu item, lift the document release door and verify that all
of the LEDs in the contact image sensor are lit.
ADF feed test
Runs the document scanner pickup rollers once.
ADF motor test
Runs the document scanner motor.
Individual diagnostics
Run individual tests from the self-test sequence (see Table 15).
Modem tone
Generates tones with various frequencies from 300 Hz to 2425 Hz.
Modem modulation
Generates various fax identification signals.