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Keyboard diagnostics:
1
2
3
PGM
4
Turn Power OFF
Connect Program Enable to 0V.
2
1
Turn Power ON
+
+
Display test
Software part number
Analog Test
Relay 2 Test
Digit Test
Relay 1 Test
Segment Test
Turn Power OFF
Disconnect Program Enable.
2
1
All segments and PGM light ON
Relays released
Outputs minimum (0V or 4mA)
Outputs maximum (10V or 20mA)
Display blank
Relay 2 operates
One digit at a time
Relay 1 operates
One segment at a time
31
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