GAI-Tronics 12576-504 Rack-Mount System Status panel with LCD Display - Manual (Page 8)

Pub. 42004-436C
Model 12576-504 ADVANCE Rack-Mount System Status Panel with LCD Display Page: 8 of 9
f:\standard ioms - current release\42004 instr. manuals\42004-436c.doc
01/12
Maintenance
Troubleshooting
Symptom Possible Cause
System Status Panel
Ack/Next LED flashes and
sonalert is sounding. The
panel is not operational.
The system status panel has lost data communication with the Access
Panel Interface (API) card at the ADVANCE System control cabinet.
Possible Causes:
• Disconnected data cable between the API card and system status
panel.
• Data cable is connected to an un-programmed API card output.
• Data cable polarity is reversed (observe +/− polarity).
• Defective API card at ADVANCE system control cabinet.
• Defective APU board inside system status panel.
Some or all push-button
switches do not function.
• Push-button switches are not programmed.
• Defective switches or an improper connection exists between
switch board and APU board inside unit.
Display does not function
• The display is not enabled in the system programming.
• Display cable is not properly connected at the APU board inside
the unit.
Servicing Guidelines
1. Notify plant personnel of a system shutdown prior to servicing the unit.
2. Disconnect power before connecting external wiring or installing or removing this panel.