Table of Contents
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System Maintenance
S
1
ECTION
I
NTRODUCTION
S
2
ECTION
O
PERATIONAL
C
URRENT AND
V
C
OLTAGE
HECKS
System Hardware Manual
The technician can use this chapter to troubleshoot and diagnose
problems during and after system installation. The troubleshooting flow
charts and general test procedures aid the technician to identify possible
causes of the problem by defining the problem area.
Using
the
System
Programming and Speed Dial data can be stored on disk for safe keeping.
After all System Programming is completed, it should be downloaded to a
disk for backup. If system memory fails, this data on the disk can be
uploaded and the memory restored.
The effectiveness of this maintenance section depends on the technician.
Due to external factors, the technician should not make any assumptions.
For example, don't assume that a new power supply used to replace
another power supply is working properly. Check the output of the power
supply with a volt meter.
The ESI(8)-U10 ETU allows the measurement of +5V and –24V. This ETU
can be used in the expansion KSU for the power output measurements.
Refer to
Table 9-1 Voltage
troubleshoot, the correct tools must be available. Some of these are listed
below.
Digital or Analog Multimeter that can read DC and AC current and
¥
voltage and DC Resistance.
Test Set (lineman) that has termination and monitor modes and
¥
DTMF and DP dialing.
Data
Upload/Download
Measurement. Before the technician can
C h a p t e r 9
feature,
all
System
9 - 1
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