GAI-Tronics 272-001 Manuale di istruzioni - Pagina 8

Sfoglia online o scarica il pdf Manuale di istruzioni per Telefono GAI-Tronics 272-001. GAI-Tronics 272-001 16. Intrinsically safe telephone

Model 262-001 and 272-001 Intrinsically-Safe Telephones

Maintenance

This section includes two troubleshooting charts designed to quickly pinpoint the source of problems.

: It may be advantageous to temporarily connect a Model 262-001 or 272-001 Telephone panel

OTE

directly to the output terminals of the Model 263 IBU when troubleshooting. Then, using the charts

below, the cause of the problem should more easily be determined.

Non-Equipment Related Problems

Problem

The I.S. phone is inactive with

no lights on the IBU when the

phone is off-hook.

The I.S. phone has no dial tone.

The lights on the IBU flash

randomly.

d:\standard ioms - current release\42004 instr. manuals\42004-173d.doc

03/06

Solution

1. Check the ac power to the Model 263 IBU.

2. Check the ac fuse F4 at the Model 263 IBU.

3. Ensure there is no wiring open at the I.S. phone.

1. If the I.S. phone has a wiring short, the IBU lights will be lit in

the following pattern:

ISLOOP

LOCK

HOOK

TELCO

2. If the TELCO line has an open, the IBU lights will be lit in the

following pattern:

ISLOOP

LOCK

HOOK

TELCO

The I.S. phone has an intermittent wiring short. The short may be

between the conductors or either/both conductor(s) to ground/shield.

= Off

Pub. 42004-173D

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