User Guide

CTX28 Installation
Installing the CTX28 Cabinet
1-8 Strata CTX I&M 06/04
PCB Installation
Overview Instructions
The following is an overview for installing the Printed Circuit Boards (PCBs) into the Strata
CTX28. After reading this section, proceed to the step-by-step instructions for each PCB.
1. Apply proper settings on the GMAU1A (motherboard Figure 1-7).
2. If applicable, set SW6 battery jumper to ON and install the GVMU1A Voice Mail card
(Figures 1-8 and 1-9).
3. Set P601 battery jumper to ON and install the GCTU1A (processor Figures 1-6 and 1-10).
4. If applicable, install the GCDU1A (3 CO, 3 CLID and 8 DKT circuits Figure 1-11).
5. If applicable, install GSTU1A (standard telephone interface Figure 1-12).
6. If applicable, install the GETS1A 100Base-TX I/F PCB (Figure 1-13).
7. If applicable, install the BSIS1A for SMDR (Figure 1-6).
8. If applicable, install HPFB-6 battery/charger (Figure 1-14).
9. Connect wiring (Table 1-14).
10.Connect AC Adaptor to P2 of the CTX28 sub-motherboard (GMAS, Figures 1-15 and 1-16)
and plug the AC Adaptor into AC power.
11.Turn the System ON by sliding the SW1 ON/OFF switch down. The ON/OFF LED located by
STANDBY will turn on (Figure 1-15).
PCB Descriptions
This describes the CTX28 cabinet PCBs (see Table 1-3 and Figure 1-6.)
Table 1-3 CTX28 (CHSU28) Cabinet circuit cards
Part Title Description
GMAU1A Main Motherboard The GMAU motherboard supports 3 CO lines, 3 CLIDs,
8 Digital Telephones, 1 Standard Telephone. The
GCTU, GVMU, and AC power adaptor plugs into the
GMAS sub-motherboard dedicated slots.
GMAS1A Sub-motherboard
GCTU1A Processor Shipped with cabinet.
GVMU1A Voice Mail Circuit Card (Optional) Voice Mail.
GCDU1A
CO, CLID, DKT circuit
card
(Optional) Supports 3 CO lines, 3 CLIDs, 8 Digital
Telephones. The GCDU1A plugs onto the motherboard.
GSTU1A
Standard Telephone
Circuit Card
(Optional) Provides 1 Standard Telephone port.
GETS1A 100BaseT I/F (Optional) Ethernet 100Base T cable.(optional)
BSIS1A RS232C (Optional) RS232-C. Provides 4 serial I/O ports.
HPFB6 External Battery (Optional) Provides backup Reserve power.