Service Manual

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6802800U74-AN
Chapter 13: MTS Troubleshooting
13.1.2.1
Troubleshooting Flow Chart
Figure 190: Troubleshooting Flow Chart
13.1.2.2
Troubleshooting: Power
• Check for Power Supply Unit failure.
• Verify power (voltage and polarity) on rear connector. If power is present and correct then replace
the Site Controller. Otherwise check for the Site Controller power supply cabling fault.
NOTICE: Ensure that the polarity of DC cable connection is correct, as it is reversed in
comparison to MBTS.
13.1.2.3
Troubleshooting: status sc
This section details usage of the Application mode MMI command status sc for general
troubleshooting and to determine the Site Controller status.
Start
Check Power
LED
Off
See “Troubleshooting power” section
On
Are LEDs Stuck
ON
Yes
Replace faulty TSC. TSC boot
software fails to execute and
turn software controlled LEDs off.
No
Is MMI
Available?
No
Check MMI cable,
and terminal set-up.
See chapter “Configuration and
Testing”
Yes
Application mode
MMI available
No
Check/reinstall TSC Application
using BTS
Service Software
Yes
See “Troubleshooting: General”
See “Led Fault Indication” section