Nortel Meridian 1 General Maintenance Information page 68

Page 68 of 72
CPU (central processing unit)
accessing, 16
downloading firmware from, 51
line transfer on failure of, 43
CPU controls, 35
D
data disks
precautions, 12
DCE ports, 18
DC-power battery systems, 26
diagnostic software programs, 49
diagnostics, interactive, 57
dial pad, terminal keyboard translation to, 23
disabling circuit cards, 29
disks/disk drive precautions, 12
documents, reference, 7
downloading firmware, 51
DROL prompt, 51
DTE ports, 18
dual CPU systems, 35
E
EHM mnemonic, 57
emergency requests, technical assistance, 63
enable/disable switches
described, 29
location, 30
enabling circuit cards, 29
Enhanced Maintenance feature, 57
ERR messages, 50
ERR mnemonic, 50
ERRM prompt, 50
Error Monitor program, 50
ESD (electrostatic discharge) precautions, 11
553-3001-500 Standard 15.00 January 2002
F
faults
indicated by user reports, 62
maintenance display indications, 33
major alarms, 39
minor alarms, 40
NT8D22 System Monitor, 41, 42
technical assistance classifications, 64
trunk, 53
firmware, 51
H
hardware maintenance tools, 27
History File
described, 56
maintenance display codes, 31
I
initialize button
described, 35
Initialize Program and, 50
Initialize Program, 50
inserting
circuit cards, 11
data disks, 12
intelligent peripheral card self-test, 28
interactive diagnostics, 57
ISS command, 57
K
keyboard to dial pad translation, 23
L
LD 11 (Multi-Line Telephone Administration), 22
LD 17 (Short Memory Test), 54
LD 22 (Print Routine 3), 56, 57
LD 30 (Network and Signaling Diagnostic), 31
LD 36 Trunk Diagnostic, 53
LD 44 (Software Audit), 52
LD 45 (Background Signaling and Switching
Diagnostic), 58
LD 135 (Core Common Equipment Diagnostic), 17,
31