Mike's PBX Cookbook

Periodic Maintenance

Refer to Meridian PBX - Routine Maintenance

Power

Battery Cell Readings

Measure individual cell voltage to 2 decimal places (nominal 2.20v).
Low or high reading cells should be inspected for physical damage, or signs of leakage.

1   2   3   4   5   6  
7   8   9   10   11   12  
13   14   15   16   17   18  
19   20   21   22   23   24  

Batteries General

Visual inspection  
Connections torqued  
Backup load test Tested: Time:

Rectifiers 

Nominal voltage: 52.8. Refer to MPR25 Rectifier Adjustment.

Totals Volts: Amps:
Balance adjusted  
Visual inspection  

MFA 150 Loads:

Unit's should be adjusted so the load is evenly balanced. Refer to MPR25 Rectifier Adjustment.
This may be done on load. Measure and record MFA150 front panel current indications:

# 1   # 4  
# 2   # 5  
# 3   # 6  

Grounding

Inspect "single point ground" for signs of corrosion. Check voltage to building ground.
Voltage should be less than 1 volt. Refer to PBX Ground Path Tests.

Checked Volts: Amps:
Visual inspection  
Switch room Inspect  

Switching Equipment

Base switch

The importance of good data backups cannot be stressed enough!

Type of system  
Rels. Information  
Database Backup  Remote: External:
Remote modem Number: Tested:

Remote backup: via XMODEM to PC - External backup: to floppy disk or PCMCIA card.
Refer to SSC Database Backup.

No. of Cabinets/nodes  
Vacant slots, etc  
Filter condition  
Additional Info  

Peripherals

Record software release, verify correct operation, and perform backups where possible.

MAT/OTM

Rels. Information    
Sync from/to switch  
Date of current B/U  

Voice Mail

Type of system  
Rels. Information  
Date of current B/U      

Cost Accounting

Type of system  
Rels. Information  
Date of current B/U      

Voice Recorder(s)

Type of system  
Rels. Information  
Verify units working     

Misc.

Type of system  
Rels. Information  
    
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