Troubleshooting
6-6 
Display Shows Only 16 Characters per Line
Possible Cause: 
A power outage occurred.
What to do: 
Unplug the modular telephone cord from the phone then plug it in again. 
If the display is still incorrect, see ‘‘System Phone Does Not Work’’ on page 6-5.
Display Is Incorrect
Possible Cause: 
Date, day, and time are not set properly.
What to do: 
Re-enter the date, day, and time using System Date (#101), System 
Day (#102), and System Time (#103). 
■ If the display is correct, the problem is solved.
■ If the display is still not correct, see ‘‘System Phone Does Not Work’’ on 
page 6-5.
Display Shows “ReplaceSysBat W/Power On”
or “ChgBat W/PowerOn” at Extensions 10 and 11
Possible Cause: 
System battery power is low.
What to do: 
Replace the system batteries (see 
Partner Advanced 
Communications Installation
 guide).
Display Does Not Show Caller ID Name/Number
Possible Cause 1: 
Not receiving Caller ID service from local phone company.
What to do: 
Contact your local phone company to check on Caller ID service.
■ If you are not receiving Caller ID service, subscribe to it.
■ If you are receiving Caller ID service, go to Possible Cause 2.
Possible Cause 2: 
Extension connected to a module that does not support 
Caller ID.
What to do: 
Make sure lines with Caller ID service are connected to a PARTNER 
ACS processor module, or 206EC, 308EC, or 400EC modules. If Caller ID lines 
are not connected to one of these modules, install the appropriate modules and/or 
make the appropriate connections.
Possible Cause 3:
 Someone activated Call Coverage.
What to do:
 Check the system phone display.
■ If 
Coverage Call for XX 
(where XX is the extension that activated the 
Call Coverage) displays, the call is a coverage call. Call Coverage displays 
the extension number of the person who activated the feature rather than 
Caller ID information.