User manual

Preventive Maintenance
5-48 ProMaster 2500 User Manual
Key/Display Test
This test verifies that the keypad keys and the display dot matrixes are
operating correctly. To select the Key/Display test, press
6
from the
Diagnostic menu. The 2500 displays:
Testing the Keys
Press
1
and the 2500 displays:
Press the keys you want to check. The characters for these keys appear on
the display, in the first column of the second row. As you press
additional keys, the displayed characters wrap to the third and fourth
lines and then appear on the first line, overwriting the message.
Press
RESET
to return to the 2500’s Main menu. Press
STOP
to end the
test and return to the Diagnostics menu.
If the characters for the keys you pressed are not displayed, the keyboard
may be defective. Replace the keyboard and try the test again. Also, check
the cable to the controller board.
Testing the Display
To test the display, press
6
from the Diagnostics menu and then press
2
. If
the display is operating correctly, each dot on the display is visible. Each
display matrix is outlined by an unlit row of dots. Press
RESET
to return
to the 2500’s Main menu. Press
STOP
to end the test and return to the
Diagnostics menu.
EEPROM Test
The 2500’s EEPROM stores the file and system data. The EEPROM test,
which lasts approximately five minutes, runs a test pattern through the
memory to verify that every location in the file storage area is functioning
properly.
CAUTION: Do not turn off power while this test is in progress. Turning
the power off will erase some or all of the 2500’s system
parameters.
To enter the EEPROM test, press
7
from the Diagnostics menu and the
2500 displays:
Pressing
RESET
before the test begins returns you to the Main Menu.
Pressing any other key begins the EEPROM test.
Note: While the test is running, pressing
RESET
will NOT return you to the
Main Menu.
PRESS 1 FOR KEY TEST, 2 FOR DISPLAY TEST
PRESS KEYS TO TEST, STOP TO ABORT
EEPROM TEST - PRESS ANY KEY TO START