Hardware Tests; Lcd Test; Button Test - Lexmark T620 Service Manual

4069-5XX/7XX

Hardware Tests

The following Hardware Tests can be selected from this menu:

LCD Test

Button Test

DRAM Memory Test
ROM Memory Test
Parallel Wrap (if available)
Parallel 1 Wrap (only displayed if PCL installed in slot 1)
Parallel 2 Wrap (only displayed if PCL installed in slot 2)
Serial Wrap (if available)
Serial Wrap 1 (only displayed if PCL installed in slot 1)
Serial Wrap 2 (only displayed if PCL installed in slot 2)
LCD Test
To run the LCD Test:
1. Select LCD Test from the Diagnostic menu.
– The LCD test continually executes the LCD display test.
2. Press Return/Stop to cancel the test.
Button Test
To run the Button Test:
1. Select Button Test from the Diagnostic menu.
– With no buttons pressed, several OP (Open) appear on the
display.
2. Press each button one at a time and a CL (Closed) displays in
place of an OP. The proper operation of each button can be
checked.
3. Press Return/Stop to cancel the test.
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Service Manual