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DEFINITY Enterprise Communications Server Release 5
Maintenance and Test for R5vs/si
555-230-123
Issue 1
April 1997
Reliability Systems: A Maintenance Aid
Page 6-18Repair Procedures for High and Critical Reliability
6
■ Network Control Circuit Pack (TN777B):
There is also an yellow LED (below Memory Card slot). When ON, the
Memory Card is in use.
■ Packet Control Circuit Pack(PCCP)(TN778)
■ Tone-Clock Circuit Pack:
NOTE:
For information on the standard amber/green/red LEDs see
TONE-BD Maintenance Object in Chapter 10, ‘‘
Maintenance Object
Repair Procedures’’.
Repair Procedures for High and
Critical Reliability
This section describes the procedure for installing or replacing Standby SPE
circuit packs. These circuit packs are:
■ Processor Circuit Pack (TN790)
■ Memory Expansion Board (CPP1)
■ Network Control Circuit Pack (TN777[B])
■ Packet Control circuit pack (TN778)
■ Processor Interface circuit pack(s) (TN765)
■ Duplication Interface circuit pack (TN772).
This procedure does not apply to the TN768 or TN780 Tone-Clock circuit pack.
Refer to ‘TONE-BD”, “TONE-PT”, or “TDM-CLK” in Chapter 10, ‘‘
Maintenance
Yello
w Green Red Meaning
On - - Link terminated at NCCP
On - Maintenance running on NCCP
- - On Fault on NCCP
Yello
w Green Red Meaning
On - - Link terminated at PCCP
On - Maintenance running on PCCP
- - On Fault on PCCP