Northern Telecom DMS-100 Series Maintenance Manual page 6

iv Contents
DPP Man-machine interface
DPP commands - an overview 5-1
The MAP terminal 5-1
DPP unit messages 5-3
DPP unit response messages 5-3
DPP unit log messages 5-3
Short form maintenance commands 5-3
SWACT processor changeover 5-4
Associating logs with ERRMAP messages 5-4
Active and standby processor command modes 5-5
Automatic message accounting (AMA) messages
Activities to recover from polling an improper AMA data block 6-12
Indications that the problem has occurred 6-12
Recovery procedure 6-12
Collector demand poll of secondary data 6-16
Copying tape from parallel disk 6-16
Recommended resolutions 6-16
Routine maintenance
Procedures associated with DPP routine maintenance 7-1
Status and alarm lamp maintenance 7-1
Other indicator lamps 7-1
System temperature sensor(s) 7-5
Fans 7-6
Cleaning 7-6
Lubrication 7-8
Fan replacement 7-8
Before fan replacement 7-8
List of Figures
Figure 1-1 DPP error recovery and log message procedure sheet - sample 1-3
Figure 2-1 Simplified block diagram of dpp operation 2-2
Figure 2-2 DPP data paths (sheet 1 of 3) 2-3
Figure 2-3 DPP data paths (sheet 2 of 3) 2-4
Figure 2-4 DPP data paths (sheet 3 of 3) 2-5
Figure 3-1 Disk drive mounting details (typical) 3-2
Figure 4-1 Disk drive connector J1, location 4-14
Figure 5-1 DPP MAP display 5-2
Figure 7-1 DPP switch and status panel 7-2
Figure 7-2 Removing DPP system front panel 7-4
Figure 7-3 Fan filter removal 7-7
Figure 7-4 Removing DPP system rear panel and fan mounting screws 7-14
297-1001-537 Standard 01.02 December 1993
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