GAI-Tronics 12250-001 User Manual
Pub. 42003-109E
GAI-TRONICS® CORPORATION
A HUBBELL COMPANY
Volume Level Control Receiver Assembly
Replacement Kit
MODEL 12250-001
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 tha t is confident i al and p roprietary to G AI-Tronics. GAI-Tronics
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
This kit is for use on t he following handset/spea ker amplifiers and speaker amplifiers with t he
corresponding p rinted circuit boa rd assembly (P CBA):
120 V AC
Amplifier
Model No.
651-001 69650-101 701-103 69701-102
701-101 69701-101, 69701-007 701-203 69701-005
701-102 69701-101, 69701-007 701-207 69701-011
701-201 69701-004, 69701-007 701-307 69701-015
701-202 69701-004, 69701-007 713-102 69713-202
701-204 69701-006, 69701-009 723-003 69723-202
701-205 69701-006, 69701-009 751-002 69701-012
701-302 69701-008
701-304 69701-014
723-001 69723-101, 69723-201
751-001 69701-010
PCBA No.
24 V DC
Amplifiers
Model No.
PCBA No.
GAI-Tronics Corporation P.O. Box 1060, Reading, PA 19607-1060 USA
610-777-1374 800-492-1212 Fax : 610-796-5954
ISIT WWW.GAI-TRONICS.COM FOR PRODUCT LITERATURE AND MANUALS
V
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ODEL 12250-001 VOLUME LEVEL CONTROL RECEIVER ASSEMBLY REPLACEMENT KIT Page: 2 of 7
Notes:
1. This volume level control ( VL C) kit can be us ed on older GAI-T ronics amplifiers (not listed); however,
it is not recommended. Amplifier models not inc l u ded on t he lis t on pa ge 1 have been obsolet e s inc e
the 1987-1989 time period, and replacement parts for them are available on a limited basis. If the VLC
is to b e installed in a station with an older amplifier, r ep lace amplifier with a listed model (possi b ly
switching amplifiers from a loc ation that does not r equire a VL C and has a newer , list ed amplifier).
2. FM and C SA ap prova ls are nullified with t he addition of VLC.
This kit includes the following components:
Qty
Description
1 Volume Level Control Receiver Assembly
2 Screw, 6-32 x ¼-inch PHMS
2 Resistor, ¼ watt, 5%
1 Templa te (for loc ating drilling holes)
1 Tie Wrap
1 Label,
24 VDC Only
: All items conta i ned in t his kit may not b e required in all installat ions.
Note
Installation
Preparation of VLC Board (24 V DC Applications Only)
Models 701-103, 701-203, 701-207, 701-307, 713-102, 723-003 and 751-002
1. Remove the hardware securing Q101 (tabbed transistor) to the VLC PCBA mounting bracket. See
Figure 1. Make note of the placement of the Q101 mounting hardware pieces so that it is re-assembled
correctly later.
2. Remove the 3 screws securing the PCBA to the mounting bracket.
3. Replace R101 by de-soldering and removing the old resistor. Insert the 6,200 ohm, ¼ watt, 5%
(blue-red-red- gold) resistor p rovided in this kit into the PCBA, and res older it. See Figure 2.
4. Trim the resistor leads on the solder side to avoid possible shorts after re-assembly.
5. Reinstall the VLC PCBA ont o the mounting bracket with 3 screws previously removed.
6. Reinstall Q101’s mounting hardware taking extra care to ensure the correct orientation of the insulator
to avoid a pos sible short of the transistor c ollector tab to the gr ound. S ee F igure 1.
7. Place the
24 VDC ONLY la bel provided in this kit on the mount ing plat e.
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ODEL 12250-001 VOLUME LEVEL CONTROL RECEIVER ASSEMBLY REPLACEMENT KIT Page: 3 of 7
Figure 1. VLC Assembly
Figure 2. VLC PCBA Component Loc ation
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