Printed Circuit Board (Pcb) Installation; Pcb Installation Considerations; Pcb Option Considerations - Toshiba DK14 Installation And Maintenance Manual

Printed Circuit Board (PCB) Installation

This section provides procedures for the installation of DK424 Base and Expansion Printed Circuit
Boards (PCBs). It includes installation instructions, optional configuration information, wiring,
and programming considerations for each PCB.
The DK424 system Base and Expansion Cabinets are shipped empty. The power supplies and
PCBs are not installed at the factory. PCBs must be installed according to the configuration
information obtained and developed in Chapter 4 – Configuration.
Install PCBs only after installing the Base Cabinet and, if applicable, Expansion Cabinets
G
per the Cabinet Installation section in this chapter.
Be sure the power supply has been tested and the ground has been checked.
G
Install universal slot PCBs per the DK424 configuration guidelines.
G
Information in this section applies to both the Release 3 and Release 4 RCTU PCBs,
Note
unless specified otherwise.

PCB Installation Considerations

The Base Cabinet has eight slots. The first two slots, labeled "R11" and "RCTU" are reserved for
the common control unit and future feature upgrades. The remaining six slots (labeled "S11,"
"S12," "S13," "S14," "S15," and "S16") are universal and capable of hosting any of the station,
line, and option interface PCBs compatible with the DK424 systems. (If needed, RSIU must be
installed in slot 11.)
The Expansion Cabinets have eight universal slots, labeled "S_1," "S_2," S_3," "S_4," "S_5,"
"S_6," "S_7,""S_8," where the blank space of the label represents the number of the Expansion
Cabinet. Like the universal slots in the Base Cabinet, these universal slots are capable of hosting
any of the station, line, and option interface PCBs (except RSIU which can only be installed in slot
11).
The DK424 Expansion Cabinet slots labeled "S_7" and "S_8," can only be used when an RCTUE/
F processor is installed in the DK424 Base Cabinet. When the RCTUE/F processor is installed in
the DK424 Base Cabinet, the MBJU PCB must be removed from the Base Cabinet to allow S_7
and S_8 to function in the DK424 Expansion Cabinets (see
If RCTUA, BA/BB, or C/D are installed in the DK424 Base Cabinet, only slot S_1~S_6 can be
used in DK424 or DK280 Expansion Cabinets. When these processors are installed in the DK424
Base Cabinet, the MBJU PCB must be installed on the Base Cabinet (see
MBJU).
Cabinets are numbered from 1 to 7. The Base Cabinet is numbered 1; the first Expansion Cabinet,
number 2; the second Expansion Cabinet, number 3; etc. See the DK424 Configuration and
Universal Slot PCB section for details regarding PCB installation.

PCB Option Considerations

DK424 PCBs may be configured for a variety of hardware and software options. Hardware options
are defined as either internal (generally related to optional PCB subassemblies) or external (related
to connection of peripheral equipment such as background music, voice mail, etc.). Hardware and
software options for each PCB are identified in the individual PCB installation procedures in this
chapter.
Strata DK I&M 5/00
DK424 Installation
Printed Circuit Board (PCB) Installation
Figure 5-28 to locate MBJU).
Figure 5-28 to locate
5-45