GAI-Tronics 61504-025, 61504-042, 12552-002 User Manual

Pub. 42003-070B

GAI-TRONICS® CORPORATION

A HUBBELL COMPANY

Speaker Volume Control Harness

Assembly Replacement Kit

MODELS 61504-025 AND 61504-042

Confidentiality Notice

This manual is pr ovided s olely as a n op erat ional, installation, and maintenance guide and contains sens itive
bus ines s and t echnic al infor ma tion which is conf idential and propriet ary to GAI-Tronics. GAI - Tronic s
retains a ll intellectual pr operty and other rights in or to t he inf ormation c ontained herein, and s uch
informa tion may only be used in connection wit h the operation of you r GAI- Tronic s pr oduct or system.
This ma nual may not be disclosed in any form, in whole or in p art, dir ec tly or indirectly, to any t hird pa rty.

General Information

The Model 61504-025 Kit is used on the following: Models 478-002, 9301A, 9305A, and Models 726­101 and 7265-101 equipped with Model 69139-001 Termination PCBAs.

The Model 61504-042 Kit is used on the following: Models 726-101 and 7265-101 equipped with Model
69200-001 Termination PCBAs and CSA approval.

This kit includes the following components:

Description

Qty

1 Speaker/Potentiometer Harness Assembly
1 Tie Wrap
4 Neoprene Washer
4 Speaker Clip

Installation

Removal of old harness assembly

1. Loca te the sp eaker volume cont rol knob on t he front p anel of the s ubset . Using a flathead s c rewdriver,

pop ou t the ca p in the center of the knob .

2. Using long-nos ed p liers or a wrench, loosen, but do not remove, t he hex nut insi de t he volu me cont rol

knob.

3. Remove the volume knob.

4. Remove and save the collar nut secur ing the potent iometer to the front p anel.

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ODELS 61504-025 & 61504-042 SPEAKER VOLUME CONTROL HARNESS REPLACEMENT KIT Page: 2 of 2

5. Remove and save the 4 screws securing the housing to t he subs et ba se.

6. Hinge the housing forward to acc es s the interior of the telephone. Unplug the s peaker harness

connector from t he p rinted circuit boa rd.

7. Pull the potentiometer out throu gh the rear of the f ront p anel. Be sure to save the int ernal- toothed

lockwasher on top of the potentiometer.

8. Loca te the speaker. Using long-nose pliers, pinch toget her and remove the 4 clips secur ing the spea ker

to the hou sing. Be very careful n o t to break the plas tic posts i n the cen ter of these cli ps, because the
posts are part of the housing.

9. Ca refully remove the spea ker, and remove the 4 neoprene was hers from the desktop housing.

10. C l ip t h e tie wrap sec uri n g the wires of all the har n ess assembli es tog ether to f ree t h e speaker v o l ume

control harness assembly wires.

11. Discard the old ha rness ass embly, including t he 4 c lips a nd 4 neoprene wa shers.

Installing the new assembly

1. Pla c e 4 new neoprene washer s over the 4 plas tic pos ts of the housing at the grill area. Install the new

sp eaker where the old speaker was us i n g the 4 speaker wires t o the side towards the front panel. Us ing
long-nose plier s, s ecure the s peaker with 4 new clips . The clips should be pr es sed firmly a gainst the
sp eaker. B e careful not to break the plas tic posts i n the center o f the clip s.

2. Plug the connector onto t he p rinted circuit boa rd at the same plac e it was b efore.

3. Pla c e the internal-toothed lockwasher on the p otentiometer.

4. Feed the pot entiometer through t he front p anel from t he b ack.

5. Secure the pot ent iometer by tightening the collar nut on the front panel.

6. Pla c e t he volu me cont rol knob over the top of the volume contr ol assembly.

7. Secure the knob b y tightening t he hex nut.

8. Sna p the ca p bac k into the knob.

9. Use the new tie wrap to secure the wires of all the harness assemblies together.

10. S ecure t he hou sing to t he s ubset ba se by tightening the 4 s c rews.

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