GAI-Tronics 12576-500 Deskset Panel Docking Station with VFD - Manual (Page 6)

Pub. 42004-691L2B
Model 12576-500 Desk Set Access Panel Docking Station with VFD Page 6 of 7
f:\standard ioms - current release\42004 instr. manuals\42004-691l2b.doc
02/13
How to Diagnose Assembly Faults
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.
Symptom Action
Access panel assembly does
not function. (No push
buttons detected, no LED
lamps activate, VFD is blank,
and handset is not
functioning.)  Verify ac power is applied to power supply. Verify that ac power
cord is plugged in. Also verify that ac outlet is active.
 Verify that the LED is lit on top of the desktop power supply.
 Verify that the data cable is properly connected between the
docking station and the control unit.
 Call for service of the access panel.
LED S are blinking and
sounder is beeping.
 Verify that the DB-15 cable is properly connected to both the desk
set and the docking station.
ACK/NEXT and PREV push
buttons are not detected.
 Verify that the DB-15 cable is properly connected to both the desk
set and the docking station.
 Call for service of the access panel.
LED lamp for the
ACK/NEXT
push button does
not activate.
 Verify that the DB-15 cable is properly connected to both the desk
set and the docking station.
 Verify that an LED lamp is installed in the faulty illuminated push
button.
 Replace the faulty LED lamp.
 Call for service of the access panel.
Piezo alarm does not
function.  Ensure that the piezo volume control is not turned all the way off.
 Call for service of the access panel.
VFD does not function, even
during a lamp test. Call for service of the access panel.