Toshiba STRATA DK14 Installation And Maintenance Manual page 310

DK424i Installation
Step 6: BCU Processor PCBs
Table 7-15 B2CBU Controls, Indicators, and Interface Connectors
Control/Indicator/Connector
DTMF Receiver Connector P5
DTMF Receiver Connector P6
DTMF Receiver Connector P7
Connector P10
Connector P3
Heart Beat indicator CD5
BATT P9
MOH/BGM Source Connector
MOH/BGM Source Volume Control
VR1
BRCS
Connector
(J1 to P5)
B2CAU
Connector
RSIU
Connector
Figure 7-28 B2CBU PCB
7-48
Type of Component
16-pin male connector
10-pin male connector
6-pin male connector
Connector for ribbon
cables
Connector for ribbon
cables
Red LED
3-terminal jumper
RCA jack
Trim potentiometer
C5
IC11
IC9
RKYS
Feature
B2CBU1A
Key Socket
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
B2CAU.
Ribbon cable connector for B2CAU and RSIU.
Flashes to indicate operation (1/4 second On
— 1/4 second Off).
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.
UP
P6
IC12
IC10
P7
IC6
5023
CBRUNK
Description
BRCS
Connector
(J4 to P2)
BRCS
Connectors
(J3 to P7)
Backplane
Connector
Strata DK I&M 6/00