Table II-Cable Running Chart
Type of
Call
Switch or
Wires from
Room to Control Center Wires from
Room Switch to Room Speaker
Device Used with Speaker No. 18 AWG
Shielded No.
18 AWG No. 18 AWG Refer to
Voice Call-In, Non-Private
(customer-supplied SPDT
2*
0
1
6
momentary switch)
None (loudspeaker only)
1
0 0
7A
Call Switch (CA-15) 1 1 1
7B
Call Switch, Privacy (CA-16) 1 1 1 7 c
*Alternate Method: Run two cables from room nearest the control center and one cable from each remaining room. Run one
cable in a loop or branch circuit connecting all room switches.
REPLACING COMPONENTS
CAUTION
Improper soldering may damage components or
the printed circuit board. Such damage can void
the warranty,
Many semiconductor components are soldered in place to en-
sure maximum reliability. When soldering transistors or
diodes, use a heat sink (such as a small alligator clip) between
the component and the source of heat. Unless you are experi-
enced in the removal of IC micromodules, do not attempt to
remove them, since excessive heat can damage an IC and/or the
printed circuit board. If you are certain that an IC is defective,
the easiest method of removal is to cut the leads off close to the
component and desolder the leads individually. If you are not
certain an IC is defective, the use of a low-wattage, vacuum-
type desoldering tool (such as Ungar Type 7800) is advised.
REPLACEMENT PARTS
Most components are standard parts available through
reputable parts suppliers. The parts listed herein may be obtain-
ed directly from the factory. When ordering a part, specify the
part number as listed, the model number of the unit, and give
the series designation, which is a letter followed by numbers,
printed on the chassis. For parts on the circuit boards, also give
the component board assembly number, which begins with
“45”.
Schematic Part
Designation Number Description
PC Board
-
45-7267-05
P.C.
Board
Ass’y.
C2,38,39,89
79-008-036
Cap., Elect., 47 µF, 16V
C3,6-8,15,16,
21,22,27,
28,40,43,47 79-008-031 Cap., Elect., 10 µF, 16V
C14,26,58,61,
70,76,79,86 79-008-024 Cap., Elect., 22 µF, 16V
C49,50,52-54,
57 79-008-042 Cap., Elect., l.0µF,.25V
C59,67,78,83 79-008-053 Cap., Elect, l00µF, 3 5 V
C65,66,82,85 79-123-001 Cap., Elect., 1000 µF, 35V
C71,73,88,101 79-008-033 Cap., Elect., 2.2 µF, 16V
C94,95
79-008-057 Cap., Elect., 47 µF, 50V
Schematic Part
Designation Number
CR2-18,20,22,
23,27-29
96-5430-01
CR19,24
96-5333-01
CR21 96-5202-01,
or
96-5202-02
IC1,2
96-5648-01
IC3
96-5656-01
IC4,5,7,8
96-5649-01
IC6 96-5455-01
IC9 96-5441-01
IClO
96-5474-01
K1,2
90-0202-01
L1,2,11-21
95-521 l-01
LEDl,3
96-5576-02
LED2,5
96-5576-03
LED4 96-5576-01
Q1,3,7-9,11,
96-5528-01
13-15 96-5527-01
Q12
96-5647-01
R9,19,28,31,
40,58,60,87,
88,123 77-007-004
R65,69,101,
Description
Diode, lN4148
Diode, 400 prv @ 1A
Triple Diode, HVR-3
IC, CA3280E
IC, CD4069CN
IC, LM1875T
IC, CD4093BE
IC, LM340T15
IC, µ A7915C
Relay, DPDT, 12VDC
Choke, Wide Band
LED, Yellow
LED, Green
LED. Red
Transistor, 2N3906
Transistor, 2N3904
Transistor, 2N6107
Trimpot, 100 kilohms
105,109
R126,127
R128,129
R38,56
Sl-8
76-147-087 Resistor, 1 ohm, 1/4W, 5%
76-114-098 Resistor, .47 ohms, SW,
w/w 10%
76-114-109 Resistor, 3.3 ohms, 5W,
w/w 10%
77-001-837
Control, 100 kilohms, Audio
Taper with Mtg. Hrdwr.
81-004-109 Pushbutton Switch & Knob
Ass’y.
C201,202
CR101
FlOl
TlOl
-
-
-
-
-
-
Chassis
79-124-001
Cap., Elect., 4700 µF, 50V
96-5650-01 Bridge Rectifier
94-0003-02 Fuse, 1A
83-836-000 Transformer, Power
93-0062-01 Speaker, 8 ohms
85-1344-01 Switchbank Cable Ass’y.
85-1345-01 Jack Ass’y.
93-5017-01 Console MIC Ass’y.
93-5016-01 Microphone
03-0682-01 Knob, Green
03-0682-02 Knob, Yellow
B O G E N
A LEAR SIEGLER COMPANY
50 SPRING STREET. PO BOX 575
RAMSEY. NJ 07446
(201) 934-8500
