AT&T System 75 Wiring Diagram page 294
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Also See for System 75:
- Wiring manual (593 pages) ,
- User manual (103 pages) ,
- User manual (45 pages)
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CHAPTER 5. AUXILIARY EQUIPMENT INSTALLATION
2. Adjust music source level.
278A ADAPTER
Figure 5-11. Loudspeaker Paging With Background Music
Connections—278A Adapter
Installation Using 89A Control Unit
Connect the 89A control unit as follows:
On the 89A control unit (Figure 5-12), connect the music source to
1 .
terminals CMS1 and CMS2.
2 .
Adjust music source level.
TO
LOUDSPEAKER
EQUIPMENT
/
\
CT
CR
MUSIC SOURCE
M2
MUSIC
INPUT
M1
5-21
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