How to diagnose assembly faults, Servicing guidelines – GAI-Tronics 12576-500 Deskset Panel Docking Station with VFD User Manual

Page 6

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Pub. 42004-691L2B

Model 12576-500 Desk Set Access Panel Docking Station with VFD

Page 6 of 7

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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.

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