Toshiba DK14 Installation And Maintenance Manual page 312

Strata dk digital business telephone solutions
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DK424i Installation
Step 6: BCU Processor PCBs
Table 7-17
B3CBU 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 Battery Jumper P9
MOH/BGM Source Connector
MOH/BGM Source Volume Control
VR1
B3CAU
Connector
RSIU
Connector
Figure 7-30 B3CBU PCB
7-50
Type of Component
10-pin male connector
6-pin male connector
10-pin male connector
Connector and ribbon
cable
Connector and ribbon
cable
3-terminal jumper
RCA jack
Trim potentiometer
CD5
IC11
Heartbeat
LED
BRCS
Connector
(J1 to P5)
IC9
RKYS
Feature
Key Socket
B3CBU1A
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.
Ribbon cable connector for B3CAU and RSIU.
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
P9
CBRUNK
CBRUNK
5026
Description
BRCS
Connector
(J4 to P6)
BRCS
Connector
(J3 to J7)
Backplane
Connector
Strata DK I&M
5/00

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