Toshiba DK14 Installation And Maintenance Manual page 311

Table 7-16 B3CAU Controls, Indicators, and Interface Connectors
Control/Indicator/Connector
DTMF Receiver Connector P3
DTMF Receiver Connector P4
DTMF Receiver Connector P5
Connector P10
Connector P11
BATT P9
MOH/BGM Source Connector
MOH/BGM Source Volume Control
VR1
BRCS
Connector
(J1 to P3)
B3CBU
Connector
B3CBU/RSIU
Connector
BGM/MOH
Volume Control
BGM/MOH
Interface
(RCA Jack)
Figure 7-29 B3CAU PCB
Strata DK I&M 5/00
Type of Component
16-pin male connector
10-pin male connector
6-pin male connector
Connector for B3CBU
ribbon cables
Connector for B3CBU
ribbon cables
3-terminal jumper
RCA jack
Trim potentiometer
UP
P3
IC10
VR1
P9
B3CAU1A
Step 6: BCU Processor PCBs
Description
Interface connector for optional DTMF receiver
subassembly (BRCS).
Interface connector for optional DTMF receiver
subassembly (BRCS).
Interface connector for optional DTMF receiver
subassembly (BRCS).
Ribbon cable connector for connection to
B3CAU. Used in conjunction with P2.
Ribbon cable connector for connection to
B3CBU. Used in conjunction with P2.
Interface connector for on-board lithium
battery that protects configuration data stored
in system RAM.
Interface connector for MOH/BGM source.
Adjusts volume for MOH/BGM source
connected to B3CAU.
BRCS
Connector
P4
(J4 to P4)
BRCS
Connectors
P5
(J3 to P5)
Backplane
Connector
5027
DK424i Installation
7-49