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Test
RAM/ROM
RS-485 loopback
RS-232 loopback
Keypad
PCMCIA
(Tests both card slots)
Display controller
(Contrast and characters)
Sound transducer
Real-time clock
PCB DIAGNOSTIC CHART
Results
0 - Pass
1 - ROM read fail
2 - RAM read fail
3 - RAM write and read do not compare.
Pass
Fail - Loopback may not be connected.
Pass
Fail - Loopback may not be connected.
Test successful
Keypad failed
Exiting the test before all keys are pressed
results in a failed keypad test.
Card detected
Card not present
Fail
User determines if display is correct.
User determines if sound transducer is
working.
Time is displayed correctly.
Invalid values are displayed for date, year,
hour, minute, or second.
Solution
Record type of failure.
Cycle Tech 2 power (press [PWR]) and retest.
If problem persists, contact Customer Support.
Check loopback connection.
If problem persists, contact Customer Support.
Check loopback connection.
If problem persists, contact Customer Support.
Cycle Tech 2 power and retest.
If problem persists, contact Customer Support.
Check that card is inserted properly.
Cycle Tech 2 power and retest.
If problem persists, contact Customer Support.
If the display shows a noticeable failure during tests,
contact Customer Support.
If no sound is emitted by repeatedly selecting Auto-
mated Test or Sound On, contact Customer Support.
Reset clock. Cycle Tech 2 power and retest. If time is
not retained, contact Customer Support.
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