Comdial Dxp Plus Instructions Manual

Plug-In
Power Line
Surge Protectors
Typical Earth
Ground Power
Cable
Two Dedicated
117 VAC 15 Amp
NEMA 5-15R
Electrical Outlets
With Third Wire
Ground
(Each Is Protected
By Its Own Circuit
Breaker.)
PLUS038
Two 15 AMP
Circuit Breakers
Ganged Together
Making the AC Power Connections
Installing The DXP Plus Expansion Cabinet IMI66–106
Installing The DXP Plus Expansion Cabinet – 9 

2.2 Measuring The Power Supply Voltages
If you need to measure power supply voltages, you can do so at the voltage connector. Measure the power under
the following conditions:
·AC line cord connected to the AC outlet,
·DC power cable disconnected from power supply’s DC voltage connector,
·AC power switch turned on.
Measurement details are shown in the illustration.
CAUTION
Once you have measured the power supply voltages, turn off the AC power switch and disconnect the AC
line cord from the AC outlet....

Measuring The Power Supply Voltages
Power Supply Measurements
Measure Between Terminals
Measured Values
+ Voltmeter
Lead- Voltmeter
Lead
Pin 1 Pin 3 - 36 VDC +/- 1.0V
Pin 5 Pin 7 + 5 VDC +/- .3 V
Pin 6 Pin 7 - 5 VDC +/- .3 V
Pin 8 Pin 70 volts = normal operation
+ 5 V nominal = thermal overload condition
(press Reset switch)
On = -36 VDC
On = +5 VDC
On = -5 VDC
On = Thermal Overload
On = Battery Backup Connected
Pins 1 & 2 = -36 V Ground
Pins 3 & 4 = -36 VDC
Pin 5 = +5 VDC
Pin 6 = -5 VDC
Pin 7 = Digital...

3.0 Installing Circuit Boards In The Expansion Cabinet
CAUTION
Circuit boards for the DXP Plus system are susceptible to damage caused by electrostatic discharge, and
you must keep this fact in mind as you handle the circuit boards. Refer to the Comdial publication
IMI01-005,Handling Of Electrostatically Sensitive Components, for general information. Specific
handling precautions are also included in this installation instruction.
Each circuit board is supplied in a static protection bag. Do not open a...

Typical Earth
Ground
Static
Wrist
Strap
ESD Protective
Mat ESD Protective
Mat
ESD Protective
Worksurface
Static 2
Common Point Ground
Creating A Static Safe Work Area
Expansion
Cabinet
Expansion
Cabinet
Earth
Ground 1 Meg Ohm
Resister Conductive
MatStatic Discharge
Wrist Stap Common
Equipment
Cabinet
PLUS035
Providing Static Protection At The Cabinet Mounting Location
Installing The DXP Plus Expansion Cabinet IMI66–106
Installing The DXP Plus Expansion Cabinet – 13 

3.2 Installing The Interface Boards
When you add an expansion cabinet to the main common equipment cabinet, you must install interface boards in
both cabinets and route the accompanying cables through the cable access holes in the cabinets. You must install
the nnnnn–M1 interface board in the main cabinet, the nnnn–X2 interface board in the upper expansion cabinet,
and the nnnn–X3 interface board in the lower expansion cabinet.
1. Be sure that the AC power cord is not connected to an AC outlet and that...

Viewing The Interface Board Installation
Interface Board
Expansion Cabinet 1
Interface Board
Main Cabinet
Interface Board
Expansion Cabinet 2 Interface
Cable for
Expansion
Cabinet 2 Interface
Cable for
Expansion
Cabinet 1
Interface Cable
Access Holes
(Two Places) Interface Cable
Access Holes
(Two Places)
PLUS028
Installing The DXP Plus Expansion Cabinet IMI66–106
Installing The DXP Plus Expansion Cabinet – 15 

Installing The Analog Station Board
In The DXP Plus Digital Communications System
1.0 Introducing The Analog Station Boards
The analog station board supports the operation of the ExecuTech model 66nnn and 67nnn analog multiline
telephones.
1.1 Inventorying The Analog Station Boards
There are two models of station boards available for use.
·Eight-station model supports eight ExecuTech multiline and single line proprietary analog telephones
·16-station model supports 16 ExecuTech multiline and single line...

2.0 Installing Circuit Boards
CAUTION
Circuit boards are susceptible to damage caused by electrostatic discharge, and you must keep this fact in
mind as you handle the circuit boards. Refer to the Comdial publication IMI01-005,Handling Of
Electrostatically Sensitive Components, for general information. Specific handling precautions are also
included in this installation instruction.
2.1 Creating A Static Safe Work Area
When servicing the common equipment cabinet at the installation location, it is a good...

Typical Earth
Ground
Static
Wrist
Strap
ESD Protective
Mat ESD Protective
Mat
ESD Protective
Worksurface
Static 2
Common Point Ground
Creating A Static Safe Work Area
Expansion
Cabinet
Expansion
Cabinet
Earth
Ground 1 Meg Ohm
Resister Conductive
MatStatic Discharge
Wrist Stap Common
Equipment
Cabinet
PLUS035
Providing Static Protection At The Cabinet Mounting Location
Installing The Analog Station Board IMI89–173
Installing The Analog Station Board – 3