GAI-Tronics 12576-501(x) ADVANCE Rack-Mount Access Panel with LCD Display - Manual (Page 15)

Pub. 42004-728L2D
Model 12576-501(x) ADVANCE Rack-Mount Access Panel with LCD Display Page: 15 of 17
f:\standard ioms - current release\42004 instr. manuals\42004-728l2d.doc
08/12
Maintenance
Troubleshooting
Symptom Possible Cause
Access panel LEDs flash
and sonalert is sounding.
The panel is not operational.
The access panel has lost data communication with the Access Panel
Interface (API) card in the ADVANCE System Control Cabinet.
Possible Causes:
 Disconnected data cable between the API card and access panel.
 Data cable is connected to an un-programmed API card output.
 Data cable polarity is reversed (observe +/− polarity).
 Defective API card
 Defective access panel PCBA
Access panel speaker does
not broadcast.
 Speaker volume control is turned down
 Defective speaker
 Defective handset hookswitch. When the handset is off-hook, the
speaker is muted.
Handset does not function
but push-button switches do.  Defective hookswitch.
 Hookswitch polarity is programmed backwards.
Handset does not page.
 The access panel’s paging destination is not programmed.
 Defective page switch or bad page switch wire connection at the
PCBA inside the access panel.
Some or all push-button
switches do not function.
 Push buttons are not programmed
 Keypad is disabled (key switch input)
 Defective keypad
Handset receiver volume or
microphone volume is low.
 The handset levels (mic, receiver & side tone) are set too low in the
system programming.
 Defective handset microphone or receiver
Display does not function
 The display is not enabled in the system programming.
 Display cable is not connected at the PCBA inside the access panel.
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 the access panel.
Spare Parts
Model No. Description
14919-113 Keypad Replacement Slide-In Labels (Set of 4)