System Check-Out; Power Up Sequence; Jumper Switch - STARPLUS DHS-L Technical Manual

2-50
Chapter 2 - Description and Installation

System Check-Out

After completing installation on the
data can be loaded. Prior to actual power up and initialization, the
checked-over to avoid startup delays or improper loading:
1. Make sure that the KSU is properly grounded.
2. Verify that all PCBs are firmly seated onto their connectors.
3. Inspect the MDF for shorted wiring and improper polarity that would affect the
Digital Key Terminals or DSS consoles.
4. Make sure that the plug-ended MDF cables connected to the KSU are secure and are
plugged into the correct position.

Power Up Sequence

The power up sequence involves the proper application of AC power to the system. A
successful power up is assured if the installation procedure has been followed:
1. Plug the AC power cord of the KSU into the dedicated 117V AC outlet.
2. Locate the database INITIALIZATION jumper JP3 on the MPB (refer to
located at the front edge of the MPB (in the center). It is also labeled ON and OFF.
3. This jumper controls the connection to the dynamic RAM battery circuit. When
jumper is OFF, customer database programming is not protected by the memory
battery in the event power is lost. In normal operation this jumper should be ON at all
times.
4. To load default at this time, turn KSU power OFF.
5. Operate the INITIALIZATION jumper to the OFF (left) position.
6. Allow the system and jumper to remain in this state for approximately 2 minutes.
7. Operate the INITIALIZATION jumper to the ON (right) position.
8. Restore system power.
DHS-L system, it must be initialized so that default
MPB Jumper Switch (JP3)
Figure 2-28: Jumper Switch
System C heck-O ut
DHS-L should be
Figure 2-28 ). It is