Power-Up Initialization - Comdial DX-80 Installation & Maintenance Manual

Power-up Initialization

Proper operation of the DX-80 system requires that the system be initialized at the time of start up. The installation
of the DX-80 is complete only when this critical operation is performed. Occasionally it may be required to
perform this initialization process after the original installation, but this is rare.
Initialization causes the operational customer database to be established and organized for system operation and
future updating. At the time this procedure is complete the default database contents are loaded into operational
memory. The system is ready to run on this database configuration. Customized changes may be made to this
database according to the allowable program settings for the various features.
Initialization Procedure
1. System power must be OFF.
2. Remove the KSU cover (four screws at each corner) of KSU1.
3. Connect grounded wrist strap to a suitable earth ground. (If a grounded wrist strap is not available, bleed
any static charge from your body before touching circuit modules by touching the gold-painted surface of the
inside of the KSU cabinet. If the KSU is properly grounded this will momentarily discharge static electricity
from your body. NOTE: A GROUNDED WRIST STRAP IS THE BEST METHOD OF ASSURING THAT
STATIC ELECTRICITY DOES NOT DAMAGE CIRCUIT MODULES.)
4. Locate the CPM and "NORMAL/COLD START" option strap on the CPM (J11).
5. Move this strap to the "COLD START" position and allow it to remain in this position for 5 seconds. (Note:
New systems are shipped with this strap in the "COLD START" position, therefore this step can be skipped.)
6. Move the strap to the "NORMAL" position.
7. Turn ON the power supply to the system by moving the ON/OFF switch to the ON position on KSU1 and
KSU2 (if two installed) simultaneously.
CAUTION!
8. Observe the LED on the CPM (at the left side of the module). The LED should begin to flash slowly.
9. The LED located at the ON/OFF button of the KSU follows the operation of the LED on the 408M. Both of
these LED's indicate the operation of the peripheral processors on the 408M.
10. The LED on the APM4 will also begin to flash indicating that its peripheral processor is running.
11. As the main CPU comes on-line it will detect the Cold Start status of a specially blocked memory address.
Once this is detected, default data is forced into operational memory. (Note: This procedure overwrites
all customized customer programming.) During this detection and force loading of data, the CPM LED
will flash at various fast rates then stabilize again at a consistent rhythmic rate. Once this consistent rate is
reached the system has begun operations and the telephones should be functional.
Default data is now loaded and operational. In this status all CO Lines will ring at extension 101, all
extensions may take and place calls and all systems features are operational per their default configuration.
Custom programming of features may now begin to meet the specific needs of this user.
P7290 IMM
DX-80 I M
NSTALLATION AND AINTENANCE
A qualified telephony technician only should perform this procedure
since hazardous voltages are present inside the KSU cabinet!
DO NOT TOUCH exposed terminals or fuse connections at or
around the power supply and fuse area while the system is powered
and the KSU (cabinet) cover is removed!
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