GAI-Tronics 12702-001, 12702-002 User Manual
Pub. 42003-179A
GAI-TRONICS® CORPORATION
A HUBBELL COMPANY
EZ Page Amplifi er PCBA Replacement Kit
Models 12702-001 (AC) and 12702-002 (DC)
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
The Model 12702-001 (AC) Amplifier Printed Circuit Board Assembly (PCBA) Replacement Kit is used
with the following EZ Page Intercom models: GC-AC1 and GC-AC2. The Model 12702-002 (DC)
Amplifier PCBA Replacement Kit is used with the Model GC-DC1 EZ Page Intercom. Each kit consists
of the PCBA only–no ot her pa rts are required.
Required Tools
• #1 P hillip s scr ewdr iver
• #2 P hillip s scr ewdr iver
• 5/8-inch wrench
• 1/2-inch wrench
• .078-inch (5/64 inch) hex allen wrench
Removing the Defective PCBA
WARNING
1. Disconnec t power to the unit.
2. Using the # 2 screwdriver , remove the s ix fr ont pa nel s c rews t hat secur e the front cover t o the housing.
3. Slowly pull the front cover ass embly f rom the rear housing—do not str es s the attached wires.
4. Ca refully dis c onnect the following connectors f rom the printed cir c uit board ass embly ( PCBA): P1,
P2, P3, and P4.
Disconnect power f rom the unit before opening or servic ing the unit.
5. Remove the fus e ( F1) from it s holder a nd reta in.
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
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Pub. 42003-179A
ODELS 12702-001 and 12702-002 EZ PAGE AMPLIFIER PCBA REPLACEMENT KIT Page: 2 of 3
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6. Using the #1 screwdriver, remove the
screw that secures the fuseholder to the
mounting brac ket and retain.
7. Carefully p ull the fr ont cover a ssembly
away from t h e en closur e.
Note the location of the speaker
volume/on-off switch (R1/SW1) a nd
Listen/Talk switch (SW2) for
reinstallation.
8. Ensu re tha t the speaker volume/on-off
switch (R1/S W 1) is turned fully cou nter
clockwise t o the off position.
9. Using the hex allen wrench, loosen the t wo
screws that s ec ure t he knob . Remove
knob and reta in.
10. Using the 5/8-inch wrench, remove the
sealing nu t holding the Lis ten/T alk switc h
to the front cover and reta in.
Figure 1. PCBA switch/jumper location
(Factory set tings s hown)
11. Using the 1/2-inch wrench, remove the
sealing nu t holding the sp eaker volume/on- of f switch (R1/SW1) t o the front cover and ret ain. N
OTE:
This will allow separa tion of the front cover from the PCBA’s heatsi nk p l ate.
12. Carefully remove the sp eaker volume/on-of f switch ( R1/SW1) a nd Listen/ Ta lk switch (SW2) from
the ba c k of the PCB A’ s heatsink pla te, noting their location and orientation for reins tallation.
Installing the New PCBA
1. Before installing the new PC BA,
modify the new PCBA’s
LAVE/MASTER switch and the
S
AL/UNBAL jumper settings to match
B
the old PC B A’ s sett ings, if neces sary.
Refer to Figure 1.
2. Place the new PCBA’s heats i nk plate
and front cover together.
3. Reinst all the sp eaker volume/on- of f
switch (R1/SW1) through the
heatsink pla te and t hrough t he f ront
Figure 2. Outline Diagram
cover. Ensure that the associated
anti - rotation pin is pr operly inserted into the locking notch a nd the at tached wires are positioned
towa rds t he f use holder location. Refer to F igure 2.
4. Push the small p anel sealing nut over the spea ker volume/on-off switch’s shaft and lightly tight en
aga i nst the f ront cover.
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