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Northern Telecom DMS-100 Series Maintenance Manual

Distributed processing peripheral, recovery and routine
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DMS-100 Family
Distributed Processing Peripheral
Recovery and Routine Maintenance Guide
BCS35 and up
Standard 01.02
December 1993
DPP
DPP
297-1001-537

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  • Page 1 297-1001-537 DMS-100 Family Distributed Processing Peripheral Recovery and Routine Maintenance Guide BCS35 and up Standard 01.02 December 1993...
  • Page 3 All rights reserved. Printed in Canada and printed in the United States of America. Information is subject to change without notice. Northern Telecom reserves the right to make changes in design or components as progress in engineering and manufacturing may warrant.

  • Page 5: Table Of Contents

    Contents About this document Applicability of this document vii How to identify the software in your office vii How the DPP documentation package is organized vii Documents in the DPP documentation package viii How the DPP documents relate to other documents viii Where to find information ix NT and BNR trademarks and the products they represent x What precautionary messages indicate xi...
  • 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...
  • Page 7 Contents v List of Tables Table 2-1 Byte structure of index files 2-9 Table 2-2 ERRMAP and log messages for DPP without 56K polling 2-10 Table 2-3 ERRMAP and log messages for DPP with 56K polling 2-10 Table 3-1 Disk drive modes 3-3 Table 4-1 Allowed disk drive unit mode changes 4-10 Table 4-2 Disk condition and disk file error messages - index 4-20 Table 4-3 Disk drive hardware error messages - index 4-78...
  • Page 8 vi Contents Procedure 4-37 Disk condition and disk file error messages - procedures 4-74 Procedure 4-38 Disk condition and disk file error messages - procedures 4-75 Procedure 4-39 Disk drive hardware error messages - procedures 4-79 Procedure 4-40 Disk drive hardware error messages - procedures 4-81 Procedure 4-41 Disk drive hardware error messages - procedures 4-83 Procedure 4-42 Disk drive hardware error messages - procedures 4-85 Procedure 4-43 Disk drive hardware error messages - procedures 4-87...

  • Page 9: About This Document

    How the DPP documentation package is organized This document is part of the DPP documentation package supporting Northern Telecom’s DPP products. The DPP documentation package is a subset of the DMS-100 Family library. DPP Recovery and Routine Maintenance Guide BCS35 and up...

  • Page 10: Documents In The Dpp Documentation Package

    Documents in the DPP documentation package The DMS-100 Family library is structured in numbered layers, each of which is associated with a Northern Telecom product. The DPP documentation package is in the 297-1001 layer. The list of DPP documents follows.

  • Page 11: Where To Find Information

    These documents, and other related manuals, follow. Note : More than one version of these documents may exist. To determine which version of a document applies to the BCS in your office, check the Northern Telecom Publications Master Index, 297-1001-001 . Document Title...

  • Page 12: Nt And Bnr Trademarks And The Products They Represent

    x About this document NT and BNR trademarks and the products they represent The following chart lists all NT and BNR trademarks that occur in this document, and associates them with the products they represent. Trademark Product Digital multiplex system telephone switching equipment telecommunications switching equipment DMS SuperNode...

  • Page 13: What Precautionary Messages Indicate

    About this document xi What precautionary messages indicate In this document, caution, danger and warning messages indicate potential risks, as identified in the following chart. Message Significance CAUTION Possibility of service interruption or degradation DANGER Possibility of personal injury WARNING Possibility of equipment damage Examples of the precautionary messages follow.
  • Page 14 xii About this document Input prompt (>) An input prompt (>) indicates that the information that follows is a command. Type the command that follows the input prompt and press the carriage return key. Capital letters Capital letters represent commands, fixed parameters, and responses that appear at a MAP.

  • Page 15: Introduction To Recovery

    Introduction to recovery DPP error, recovery, and log message procedural descriptions The individual message descriptions and procedures vary in length and content, but the overall format is the same for each message procedure sheet. Each error message and recovery procedure is divided into the following six areas.
  • Page 16 1-2 Introduction to recovery Figure 1-1 DPP error recovery and log message procedure sheet - sample Applicable system version message as printed on the terminal I.D.(s) (BCS level) where: variable data (where applicable) cause: reason the message appeared Alarm Level: Critical Level 0, 1, 2, 3, or, response/information, and what pri- Major...

  • Page 17: Message Introduction [1]

    Introduction to recovery 1-3 [1] Message introduction The first area contains the message format as it would appear at the system maintenance terminal, or equivalent. To the extreme right of the message line is the applicable DPP system version(s) of the message. The DPP system version is identified as either BCS25, BCS26, or so forth.

  • Page 18: System Recovery Action [5]

    1-4 Introduction to recovery [5] System recovery action This area provides a brief statement of actions the DPP automatically takes to clear the error condition. This information defines the conditions after the system has completed the resident recovery program routines. The completion of these programs causes a stable state configuration.

  • Page 19: Dpp System Operation

    DPP system operation Overview The DPP allows data acquisition, storage, formatting, and forwarding from the DMS-100. The DPP accepts billing data from the DMS-100 which temporarily stores the collected data on hard disk. When requested, the DPP retrieves, reformats, and sends the stored data to the HOC. Data collected by the DPP includes call records for billing, statistics, and maintenance.
  • Page 20 2-2 DPP system operation Figure 2-1 Simplified block diagram of DPP operation CENTRAL OFFICE Hard Disk Drive HOST SITE Switching Modem System Circuitry Modem Collector Data 297-1001-537 Standard 01.02 December 1993...
  • Page 21 DPP system operation 2-3 Figure 2-2 DPP data paths (sheet 1 of 3) DMS-100 PART OF CONTROLLER (1X68) To DPP DSI INTERFACE IOC 0 1X67 RS-232 Serial Port To DPP P/A Comm To DPP P/A Comm RS-232 Serial Port IOC 1 1X67 PART OF INTERFACE...
  • Page 22 2-4 DPP system operation Figure 2-3 DPP data paths (sheet 2 of 3) DATA STREAM INTERFACE To DMS-100 DSI(MTD) DISK DISK Controller INTER- SEMBLY FACE To DMS-100 QUAD IOC 0 TERMINAL POWER/ ALARM/ COMMU- To DMS-100 NICATIONS IOC 1 QUAD DISK DISK DATA...
  • Page 23 DPP system operation 2-5 Figure 2-4 DPP data paths (sheet 3 of 3) DEDICATED LINE OR Communication HOST OFFICE Section MODEM NETWORK MODEM COLLECTOR DPP Recovery and Routine Maintenance Guide BCS35 and up...

  • Page 24: Collecting And Storing Data

    2-6 DPP system operation Collecting and storing data MTD and storage type output signals from the DMS-100 are routed from the active DMS-100 MTD port, through the interface box, to the DPP DSI PCAs. The DSI PCAs have their own microprocessor and software program to emulate MTD functions.

  • Page 25: Data Storage

    DPP system operation 2-7 Data storage The disks provide an intelligent data storage system by recording different types of information in separate files. Files for record storage are divided as follows: MAINF informational files used by the Collector containing a summary of polling sessions.

  • Page 26: Disk File System

    2-8 DPP system operation Disk file system The disk drives provide an off-line medium for data storage unaffected by power outage. Data remains on disk, as secondary AMA data, even after polling by the HOC. Due to the large storage capacity of disks, several days of records are accommodated on the disk, available as backup records to retrieve at a later time, if necessary.

  • Page 27: Disk Storage Capacity Recovery

    DPP system operation 2-9 The index file tracks the data file versions. It may contain up to 56 (72-, 140-, and 380-Mbyte disk drives; 200 for 380-Mbyte w/56K polling and 760-Mbyte) versions. Each version of the index file consists of 9 bytes as follows: Table 2-1 Byte structure of index files...

  • Page 28: 70% Disk Occupancy

    2-10 DPP system operation Note: The total disk capacity for the DPP is 95 percent of total disk space available. When total disk capacity (AMA data=100 percent disk usage) is referred to throughout this section in relation to AMA files, it refers to 95 percent of the actual DPP disk capacity.

  • Page 29: 90% Disk Occupancy

    DPP system operation 2-11 reduced to the 70% threshold. As new primary files are added to storage, the oldest secondary files continue to be deleted. If all secondary files are deleted and disk occupancy remains at 70% or above, a minor alarm is raised.
  • Page 30 2-12 DPP system operation To poll the AMA data in sequence, manually change the DPP disk mode back to the original full disk. The polling session then takes the oldest primary AMA data from the first full disk. At this time, any incoming AMA data from the DMS-100 is written to a special reserved area of the disk from which AMA data is being polled.

  • Page 31: Disk Drives Overview

    Disk drives overview Disk drive system description The DPP uses two hard (fixed) 5-1/4 inch disk drives in the lower left corner of each processor chassis. These drives are mounted on brackets ( Fig. 3-1). In the 380- and 760-Mbyte drive, the controller is an integral part of the disk drive assembly.
  • Page 32 3-2 Disk drive overview Figure 3-1 Disk drive mounting details (typical) Do not remove Retainer screw Extraction handle Retainer screw Top view Do not remove Extraction handle Guide bracket reference Do not remove Retainer Front view Side view screw reference 297-1001-537 Standard 01.02 December 1993...

  • Page 33: Activities In Response To Disk Mode Message(S)

    Disk drive overview 3-3 Table 3-1 Disk drive modes Mode Description A ONLY The DPP processors read data from and write data to the disk in the A processor chassis ONLY . A PRIME The DPP processor writes duplicate information to both disks (A and B). The disk in the A chassis is the PRIME disk and the active processor reads data from that disk and accesses the disk in the B chassis at about the same time;...

  • Page 35: Disk Drive Procedures

    Disk drive procedures Disk drive recovery procedure Use the following procedure when the disk drive(s) are malfunctioning. If a message indicates a disk drive has malfunctioned, remember to wait a few minutes to see if the message repeats, or if another disk malfunction occurs. The problem may be transitory, in which case there is nothing wrong.
  • Page 36 4-2 Disk drive procedures Procedure 4-1 Disk drive procedures - fault determination Step Description Notes Enter: (at the terminal) >DISK MODE (cr) Determine the current disk operating mode. System response = AO = A ONLY If the disk system mode shows either disk in the PRIME mode, there is no fault, BO = B ONLY procedure complete.
  • Page 37 Disk drive procedures 4-3 Procedure 4-1 Disk drive procedures - fault determination (continued) Step Description Notes CAUTION Use the FORMAT command ONLY when in direct contact with NT field support personnel. This command may cause a loss of data. Perform the DISK FORMA T procedure during a period of low data gathering activity (low traffic) to avoid data losses.
  • Page 38 4-4 Disk drive procedures Procedure 4-2 Disk drive procedures - format disk drive Step Description Notes CAUTION This disk command may cause a loss of data. Perform the DISK FORMAT procedure during a period of low data gathering activity (low traffic) to avoid data losses. Enter: (at the terminal) Make sure the operational disk drive is in DISK ONLY mode before entering this...
  • Page 39 Disk drive procedures 4-5 Procedure 4-4 Disk drive procedures - make disk system PRIME mode Step Description Notes CAUTION This disk command may cause a loss of data if the wrong disk is selected to be made PRIME. Make certain that the disk that is in the ONLY mode is the one selected to be made PRIME mode.
  • Page 40 4-6 Disk drive procedures Procedure 4-5 Disk drive procedures - recommended initialization (continued) Step Description Notes Enter: (at the terminal) Obtain the disk manufacturer’s bad track map. >DISK DEFMAP x (cr) where: x = drive = A = disk drive A = B = disk drive B System response is a prompt: Enter a space before the digits to prevent...
  • Page 41 Disk drive procedures 4-7 Procedure 4-6 Disk drive procedures - alternate initialization Step Description Notes CAUTION These disk commands may cause a loss of data. Make sure the operational disk drive is in DISK ONL Y mode before entering commands. Enter: (at the terminal) Causes the disk drive specified by “x”...
  • Page 42 4-8 Disk drive procedures Procedure 4-6 Disk drive procedures - alternate initialization Step Description Notes Once this procedure is complete, return to the message procedure you left and continue the activities. Notes: Note 1: This procedure may take up to four hours, during which time the disk system is in a non-redundant mode. This procedure should only be used if the manufacturer’s bad track map is not available on site.
  • Page 43 Disk drive procedures 4-9 Procedure 4-7 Disk drive procedures - set disk drive parameters (continued) Step Description Notes Pulse = Integer = Step pulse width in microseconds. Period = Integer = Step period times in microseconds. Mode = 0, 1, 2, = Step mode. Head = 0 - 8 = Number of heads.
  • Page 44 4-10 Disk drive procedures Table 4-1 Allowed disk drive unit mode changes Initial Mode Final Mode Allowed Remarks/conditions yes/no A PRIME A ONLY A PRIME B PRIME A PRIME B ONLY A ONLY A PRIME Allowed if the B disk is initialized. A ONLY B PRIME A ONLY...

  • Page 45: Replacing Disk Drive

    Disk drive procedures 4-11 Replacing disk drive Note: The following procedure is for replacing the A disk drive; use the same procedure for replacing the B disk drive by transposing the A and B references. The status of the disk drives changes to B ONLY immediately when the main processor determines that the A disk drive has a non-recoverable fault condition.
  • Page 46 4-12 Disk drive procedures Procedure 4-8 Disk drive replacement procedure - removing the faulty disk drive Step Description Notes CAUTION Since all circuit assemblies in the DPP system are static sensitive, be careful handling them. Remove the front panel of the DPP. See Loosen the four screws located on the left Figure 7-2.
  • Page 47 Disk drive procedures 4-13 Procedure 4-8 Disk drive replacement procedure - removing the faulty disk drive (continued) Step Description Notes Remove the 2 screws from the disk drive See Figure 3-1 for the location of the handle mount. screws. Grasp the disk drive in the front at the bottom, by the handle, and pull straight forward until it stops.
  • Page 48 4-14 Disk drive procedures Figure 4-1 Disk drive connector J1, location a. Top View, 72- and 140-Mbyte disk drives b. Rear View, 380-Mbyte disk drive 297-1001-537 Standard 01.02 December 1993...
  • Page 49 Disk drive procedures 4-15 Procedure 4-9 Disk drive replacement procedure - installing the replacement disk drive Step Description Notes CAUTION Since all circuit assemblies in the DPP system are static sensitive, be careful handling them. Keeping the disk drive level, slide it into Make sure there are no obstructions in the position far enough to reconnect the ribbon path of the disk drive before installation.
  • Page 50 4-16 Disk drive procedures Procedure 4-9 Disk drive replacement procedure - installing the replacement disk drive (continued) Step Description Notes Make the disk system redundant; make the Make the ONLY disk PRIME mode. This ONLY disk, PRIME mode. one has the newest polling data on it. Enter: (at the terminal) >DISK MODE xx (cr) where: xx = disk mode= AP = A PRIME...
  • Page 51 Disk drive procedures 4-17 Procedure 4-9 Disk drive replacement procedure - installing the replacement disk drive (continued) Step Description Notes Reinitialize the new disk. Select either the After initialization activities are complete, go recommended procedure (steps 13-15) or to step 17. the alternate procedure (steps 16-17.) CAUTION These disk commands may cause a loss of data.
  • Page 52 4-18 Disk drive procedures Procedure 4-9 Disk drive replacement procedure - installing the replacement disk drive (continued) Step Description Notes Once this procedure is complete, return to the message procedure you left and continue the activities. CAUTION These disk commands may cause a loss of data. Make sure the operational disk drive is in DISK ONL Y mode before entering commands.
  • Page 53 Disk drive procedures 4-19 Procedure 4-9 Disk drive replacement procedure - installing the replacement disk drive (continued) Step Description Notes Once this procedure is complete, return to the message procedure you left and continue the activities. Notes: Note 1: If the disk system attains the PRIME mode, return the processor system to the PRIME mode. Make the processor that is on the ONLY mode presently the PRIME processor.
  • Page 54 4-20 Disk drive procedures Table 4-2 Disk condition and disk file error messages - index Message Page AMACRD FILE yyyyyy ERROR: ee (w/56K polling) 4-81 AMACRD FILE yyyyyy ERROR: ee (w/o 56K polling) 4-81 AMAIDX FILE FULL (w/o 56K polling) 4-70 AMAIDX FILE yyyyyy ERROR: ee (w/56K polling) 4-81...
  • Page 55 Disk drive procedures 4-21 Table 4-2 Disk condition and disk file error messages - index Message Page EXCIDX FILE yyyyyy ERROR: ee (w/o 56K polling) 4-75 EXCIDX FILE FULL (w/o 56K polling) 4-57 FILE READ FAILED (w/o 56K polling) 4-52 4-53 FORMAT NOT ALLOWED INIT NOT ALLOWED (w/o 56K polling)

  • Page 56: Bad Excidx File

    4-22 Disk drive procedures Procedure 4-10 Disk condition and disk file error messages - procedures (log message) where: = AMA (toll data) = corruption of the AMA index file. Call record BAD AMAIDX FILE, or, data sent to Collector (log message) may be invalid BAD EXCIDX FILE, or, = EXC (exception)
  • Page 57 Disk drive procedures 4-23 Procedure 4-10 Disk condition and disk file error messages - procedures (continued) >IDXMAINT CREATE DIR FType Version Primary (cr) where: FType = File Type = AMA = LOG = EXC Version = 1 - 255 = starting program version number of this data file.
  • Page 58 4-24 Disk drive procedures Procedure 4-10 Disk condition and disk file error messages - procedures (continued) Check the specified index file. Enter: (at the terminal) >IDXMAINT CHECK FType (cr) where: FType = File Type = AMA = LOG = EXC (Ftype entered must be the same as the file created in step b.) Response: GOOD FType FILE or...

  • Page 59: Both Disks Full

    Disk drive procedures 4-25 Procedure 4-11 Disk condition and disk file error messages - procedures (log message) cause: printed when the amount of disk space for storing AMA data has reached 100 percent of available BOTH DISKS FULL space. Alarm Level: Reason Code = 08 two disks 100% = Critical no processor switch...
  • Page 60 4-26 Disk drive procedures Procedure 4-12 Disk condition and disk file error messages - procedures (continued) Other Alarm Indications Default: Status Panel: Minor Audible: Minor Customer-Selected Status Panel: Audible: System Recovery Action None; (input is rejected). Craftsperson Activity Retry input at a later time. Procedure 4-13 Disk condition and disk file error messages - procedures (log message)
  • Page 61 Disk drive procedures 4-27 Procedure 4-13 Disk condition and disk file error messages - procedures (continued) After a data track has been relocated: D5 = seek prime D6 = seek standby D7 = write prime D8 = write standby Formats: FA = A FB = B Relocate track from prime;...
  • Page 62 4-28 Disk drive procedures Procedure 4-13 Disk condition and disk file error messages - procedures (continued) Alarm Level: Reason Code = 27 No disk mode switch Corresponds to ERRMAP entry: DISK ER MESSAGE System Default: Type: Minor Level: 0 Customer-Selected Type: Level: Alarm Level...
  • Page 63 Disk drive procedures 4-29 Procedure 4-13 Disk condition and disk file error messages - procedures (continued) Change the disk mode to PRIME mode. Enter: (at the terminal) >DISK MODE xx (cr) where: xx = disk mode = AP = A PRIME (from disk mode AO) = BP = B PRIME (from disk mode BO)

  • Page 64: Disk Mode Alarm

    4-30 Disk drive procedures Procedure 4-14 Disk condition and disk file error messages - procedures cause: disk system found to be nonredundant at hour DISK MODE ALARM boundary. fault caused disk system to become nonredundant. one disk is 100% full; system becomes nonredundant to use second disk for additional primary data.
  • Page 65 Disk drive procedures 4-31 Procedure 4-15 Disk condition and disk file error messages - procedures cause: a. response to manual request for current DISK DISK MODE: MODE status and neither disk A or B has been initialized. Alarm Level: Reason Code = N/A No selected disk mode.
  • Page 66 4-32 Disk drive procedures Procedure 4-15 Disk condition and disk file error messages - procedures (continued) iii. Put the disk system in PRIME mode, if necessary. - Enter: (at the terminal) >DISK MODE xx (cr) where: xx = disk mode = AP = A PRIME (from disk mode AO) = BP = B PRIME...
  • Page 67 Disk drive procedures 4-33 Procedure 4-15 Disk condition and disk file error messages - procedures (continued) ii. See Disk Drive Procedures, Replacing Disk Drive, Procedures 4-8 and 4-9. Call technical assistance if help is needed. iii. Go to step e when disk is installed. e.Enter the correct parameters for your disk drive.
  • Page 68 4-34 Disk drive procedures Procedure 4-15 Disk condition and disk file error messages - procedures (continued) i. The recommended procedure shown in Procedure 4-5. (Once this procedure is complete, go to step i.) ii. The alternate procedure shown in Procedure 4-6.

  • Page 69: Disk Queue Error

    Disk drive procedures 4-35 Procedure 4-16 Disk condition and disk file error messages - procedures (log message) cause: output if no free command nodes are available. DISK QUEUE ERROR Alarm Level: Reason Code = 29 Corresponds to ERRMAP entry: DSK DPR, QUE ERR (w/o 56K polling) DSK CARD HW ERR (w/56K polling) System Default: Type: Major...

  • Page 70: Disk Use > Xx% (W/O 56K Polling)

    4-36 Disk drive procedures Procedure 4-17 Disk condition and disk file error messages - procedures where: xx = disk use percent (decimal point value). DISK USE > xx% (w/o 56K polling) cause: output anytime disk usage reaches 70, 90, or 100% of capacity.
  • Page 71 Disk drive procedures 4-37 Procedure 4-17 Disk condition and disk file error messages - procedures (continued) Case 2:disk mode non-redundant; one disk already at maximum AMA capacity and the other disk is operating in the ONLY mode. On the ONLY disk, which is currently the ONLY disk available to accept incoming data: a.

  • Page 72: Disk Use > Xx% Primary Data (W/ Or W/O 56K Polling)

    4-38 Disk drive procedures Procedure 4-18 Disk condition and disk file error messages - procedures where: xx = disk use percent (decimal point value). DISK USE > xx% PRIMARY DATA cause: output anytime disk usage for primary AMA data (w/ or w/o 56K polling) reaches 70, 90, or 99 percent of capacity.

  • Page 73: Disk Vs Not Found (W/O 56K Polling)

    Disk drive procedures 4-39 Procedure 4-18 Disk condition and disk file error messages - procedures (continued) System Default: Type: See Alarm Level Level: Customer-Selected Type: Level: Alarm Level Other Alarm Indications Default: Status Panel: Audible: Customer-Selected Status Panel: Audible: System Recovery Action System performs disk recovery procedure;...
  • Page 74 4-40 Disk drive procedures Procedure 4-19 Disk condition and disk file error messages - procedures (continued) Customer-Selected Type: Level: Alarm Level Other Alarm Indications Default: Status Panel: Minor Audible: Minor Customer-Selected Status Panel: Audible: System Recovery Action Defaults are set to no bad track mapping and small file size for AMA, LOG, and EXC files.
  • Page 75 Disk drive procedures 4-41 Procedure 4-19 Disk condition and disk file error messages - procedures (continued) Check if the disk firmware version is correct for this processor. Enter: (at the terminal) >DISK VS (cr) Proper response = D01D6I-00:3/10/89 this is the active disk ( firmware version for any BCS using 380 Mbyte disks w/o 56K polling;...
  • Page 76 4-42 Disk drive procedures Procedure 4-19 Disk condition and disk file error messages - procedures (continued) Check to see if the problem message repeats. Enter: (at the terminal) >DISK VS (cr) Proper response = D01D6I-00:3/10/89 this is the active disk ( firmware version for any BCS using 380 Mbyte disks w/o 56K polling;...
  • Page 77 Disk drive procedures 4-43 Procedure 4-19 Disk condition and disk file error messages - procedures (continued) i. If the message does not repeat, procedure complete. ii. Report this incident to NT as soon as possible. iii. If the problem appears on both processors, and did not go away when the power is cycled, go to step f.

  • Page 78: Disk: Backup Failed

    4-44 Disk drive procedures ii. Repeat the DISK VS and VS command inputs to verify that the versions are now compatible. - If the versions are correct, procedure complete. - If the versions are not correct, go to step h. See Printed Circuit Assembly Replacement in 297-1001-536: DPP Card Replacement Guide .
  • Page 79 Disk drive procedures 4-45 Procedure 4-20 Disk condition and disk file error messages - procedures (continued) Alarm Level: Reason Code = N/A DISK MODE nonredundant. Corresponds to ERRMAP entry: DISK ER MESSAGE DISK WRITE FAIL System Default: Type: Minor Level: 1 Customer-Selected Type: Major Level: 2...
  • Page 80 4-46 Disk drive procedures Procedure 4-20 Disk condition and disk file error messages - procedures (continued) Change the disk to PRIME mode. Enter: (at the terminal) >DISK MODE xx (cr) where: xx = disk mode = AP = A PRIME (from A ONLY) = BP = B PRIME (from B ONLY)

  • Page 81: Disk: Both Disks Contained Preferred Status

    Disk drive procedures 4-47 Procedure 4-20 Disk condition and disk file error messages - procedures (continued) i. See Disk Drive Procedures, Replacing Disk Drive. ii. Repeat steps a and b. (If unsuccessful, go to step g.) Replace the Power Supply (the one with the faulty +12 V dc supply).
  • Page 82 4-48 Disk drive procedures Procedure 4-21 Disk condition and disk file error messages - procedures (continued) Customer-Selected Type: Level: Alarm Level Other Alarm Indications Default: Status Panel: Minor Audible: Minor Customer-Selected Status Panel: Audible: System Recovery Action None Craftsperson Activity Verify through earlier printouts to determine which disk was active previously.
  • Page 83 Disk drive procedures 4-49 Procedure 4-21 Disk condition and disk file error messages - procedures (continued) Try to put the ONLY disk drive in PRIME mode. i. Change the disk to PRIME mode. Enter: (at the terminal) >DISK MODE xx (cr) where: xx = disk mode = AP = A PRIME (from A ONLY)
  • Page 84 4-50 Disk drive procedures Procedure 4-22 Disk condition and disk file error messages - procedures where: xx = cross-references to software message(s). DSK MSG xx: These responses appear during disk activities in the monitor mode. System software is not running. 00 = MSG RCVD PARM DISK 02 = WRT MEM COMPLETE 04 = OUTPUT COMPLETE 0B = RST-7...
  • Page 85 Disk drive procedures 4-51 Procedure 4-22 Disk condition and disk file error messages - procedures (continued) Craftsperson Activity a.If the DPP system can boot itself up, clear the alarms and monitor the printouts for the cause of the error. Enter: (at the terminal, to clear all alarms in the active processor) >RSERR ACT 00 (cr) Proper response =...

  • Page 86: File Read Failed (W/O 56K Polling)

    4-52 Disk drive procedures Procedure 4-23 Disk condition and disk file error messages - procedures cause: a program load from disk failed due to the FILE READ FAILED inability to read one of the file blocks. (w/o 56K polling) Alarm Level: Reason Code = N/A Corresponds to ERRMAP entry: N/A System Default:...

  • Page 87: Format Not Allowed

    Disk drive procedures 4-53 Procedure 4-23 Disk condition and disk file error messages - procedures (continued) i. See Printed Circuit Assembly Replacement in 297-1001-536: DPP Card Replacement Guide . (If successful, procedure complete.) Ii. If the problem is not cleared after PCA replacement and restart, go to step c.
  • Page 88 4-54 Disk drive procedures Procedure 4-24 Disk condition and disk file error messages - procedures (continued) Other Alarm Indications Default: Status Panel: Audible: Customer-Selected Status Panel: Audible: System Recovery Action Termination of disk job. Craftsperson Activity If disk is in PRIME mode, do not continue. Otherwise, perform the following steps: a.User is trying to format an active disk;...

  • Page 89: Init Not Allowed (W/O 56K Polling)

    Disk drive procedures 4-55 Procedure 4-24 Disk condition and disk file error messages - procedures (continued) i. The recommended procedure is Procedure 4-5. ii. The alternate procedure is Procedure 4-6. (When init activity is complete, go to step c.) c.Change the disk to PRIME mode. Enter: (at the terminal) >DISK MODE xx (cr)
  • Page 90 4-56 Disk drive procedures Procedure 4-25 Disk condition and disk file error messages - procedures (continued) Customer-Selected Type: Level: Alarm Level Other Alarm Indications Default: Status Panel: Audible: Customer-Selected Status Panel: Audible: System Recovery Action Termination of requested disk operation. Craftsperson Activity a.Determine the current disk mode.
  • Page 91 Disk drive procedures 4-57 Procedure 4-25 Disk condition and disk file error messages - procedures (continued) i. The recommended procedure is Procedure 4-5. ii. The alternate procedure is Procedure 4-6. (When init activity is complete, go to step d.) c.Change the disk to PRIME mode. Enter: (at the terminal) >DISK MODE xx (cr)

  • Page 92: Invalid Addr

    4-58 Disk drive procedures Procedure 4-25 Disk condition and disk file error messages - procedures (continued) i. See Printed Circuit Assembly Replacement in 297-1001-536: DPP Card Replacement Guide . ii. If unsuccessful after PCA replacement and restart, go to step g. Return the original PCA to its position before proceeding.

  • Page 93: No Disk On Line

    Disk drive procedures 4-59 Procedure 4-26 Disk condition and disk file error messages - procedures (continued) Other Alarm Indications Default: Status Panel: Audible: Customer-Selected Status Panel: Audible: System Recovery Action None Craftsperson Activity a.Reboot the system. - Enter: (at the terminal) >DOS LB (cr) (used to load program files into memory)
  • Page 94 4-60 Disk drive procedures Procedure 4-27 Disk condition and disk file error messages - procedures (continued) Other Alarm Indications Default: Status Panel: Minor Audible: Minor Customer-Selected Status Panel: Audible: System Recovery Action None Craftsperson Activity a.Switch processors. CAUTION This action may cause data loss. i.

  • Page 95: No Disk Parameters

    Disk drive procedures 4-61 Procedure 4-27 Disk condition and disk file error messages - procedures (continued) d.If disk mode is AO or BO, make the ONLY disk PRIME mode. i. Change the ONLY disk to PRIME mode. Enter: (at the terminal) >DISK MODE xx (cr) where: xx = disk mode = AP = A PRIME...
  • Page 96 4-62 Disk drive procedures Procedure 4-28 Disk condition and disk file error messages - procedures (continued) Customer-Selected Type: Level: Alarm Level Other Alarm Indications Default: Status Panel: Audible: Customer-Selected Status Panel: Audible: System Recovery Action None Craftsperson Activity a.Enter the correct parameter(s) for your disk drive. CAUTION These disk commands may cause data loss.

  • Page 97: Partial File Deleted

    Disk drive procedures 4-63 Procedure 4-28 Disk condition and disk file error messages - procedures (continued) c.Change the disk mode to PRIME mode. Enter: (at the terminal) >DISK MODE xx (cr) where: x = drive = A = disk drive A = B = disk drive B Proper response = FORMAT DONE i.

  • Page 98: Prolonged File Busy Cleared

    4-64 Disk drive procedures Procedure 4-29 Disk condition and disk file error messages - procedures (continued) System Recovery Action None Craftsperson Activity None Procedure 4-30 Disk condition and disk file error messages - procedures (log message) cause: output when a disk file busy flag has been set for about ten seconds following the input of an AMA PROLONGED FILE BUSY data block.

  • Page 99: Scsi: Interrupt From Invalid Device (W/56K Polling)

    Disk drive procedures 4-65 Procedure 4-30 Disk condition and disk file error messages - procedures (continued) Craftsperson Activity a.Monitor the DPP for any reoccurrence of this message. This could be a symptom of a more serious problem. If the message repeats, go to step b.

  • Page 100: Scsi: Interrupt While Idle (W/56K Polling)

    4-66 Disk drive procedures Procedure 4-31 Disk condition and disk file error messages - procedures (continued) Craftsperson Activity a.Verify the position of the address strap on both of the disk drives. i. Make any corrections necessary based on the information in the table. ii.
  • Page 101 Disk drive procedures 4-67 Procedure 4-32 Disk condition and disk file error messages - procedures (continued) Alarm Level: Reason Code = N/A Corresponds to ERRMAP entry: N/A System Default: Type: N/A Level: N/A Customer-Selected Type: Level: Alarm Level Other Alarm Indications Default: Status Panel: Audible:...
  • Page 102 4-68 Disk drive procedures Procedure 4-33 Disk condition and disk file error messages - procedures (log message) cause: output as part of an error message when a disk command is not successfully executed within an DISK: TIME OUT allocated time period. Alarm Level: Reason Code = N/A Corresponds to ERRMAP entry: N/A...
  • Page 103 Disk drive procedures 4-69 Procedure 4-34 Disk condition and disk file error messages - procedures (continued) Alarm Level: Reason Code = N/A Corresponds to ERRMAP entry: N/A System Default: Type: N/A Level: N/A Customer-Selected Type: Level: Alarm Level Other Alarm Indications Default: Status Panel: Audible:...
  • Page 104 4-70 Disk drive procedures Procedure 4-35 Disk condition and disk file error messages - procedures (log message) cause: the index file designated contains 56 versions (72- and 140-Mbyte disks; 200 versions for AMAIDX FILE FULL 380-Mbyte with 56K polling and 760-Mbyte) and (log message) an attempt is made to create another “xxxCRD”...
  • Page 105 Disk drive procedures 4-71 Procedure 4-35 Disk condition and disk file error messages - procedures (continued) c.Fix the index. Enter: (at the terminal) >IDXMAINT CREATE DIR FType Version (cr) where: FType = AMA = AMA files = EXC = Exception files Version = 1 - 255 = starting pro- gram version of the data file.
  • Page 106 4-72 Disk drive procedures Procedure 4-36 Disk condition and disk file error messages - procedures Step Action Response where: yyyyyy = Operation that returned the error BOOTCP FILE yyyyyy = CREATE = OPEN = WRITE ERROR: ee = READ = CLOSE = SAVE (w/56K polling) = REQBUF...
  • Page 107 Disk drive procedures 4-73 Procedure 4-36 Disk condition and disk file error messages - procedures (continued) Step Action Response Craftsperson Activity a.List the BOOTCP boot list file. b.The 56K Interface boot list file BOOTCP probably needs to be recreated; create the boot file. Enter: (at the terminal) >CP BOOT ADD (cr)
  • Page 108 4-74 Disk drive procedures Procedure 4-37 Disk condition and disk file error messages - procedures where: xxxxxx = File Name (file name is determined at xxxxxx FILE yyyyyy time of creation for Comm processor software ERROR: ee files; at time of implementation for patch files) (w/56K polling) where: yyyyyy = Operation that returned the error = CREATE...
  • Page 109 Disk drive procedures 4-75 Procedure 4-37 Disk condition and disk file error messages - procedures (continued) Craftsperson Activity a.List the BOOTCP boot list file. b.The SCSI Interface boot list file BOOTCP probably needs to be recreated; create the system boot file. Enter: (at the terminal) >CP BOOT ADD file_name file_version (cr)
  • Page 110 4-76 Disk drive procedures Procedure 4-38 Disk condition and disk file error messages - procedures (continued) = 00 = indicates file is closed = 01 = directory full = 02 = active file table full = 03 = no such file = 04 = file not closed = 05 = file not open = 06 = file expired...
  • Page 111 Disk drive procedures 4-77 Procedure 4-38 Disk condition and disk file error messages - procedures (continued) Craftsperson Activity a.See the associated disk error message for more definitive information of the fault. i. See the procedure sheet for other disk error messages that appear.
  • Page 112 4-78 Disk drive procedures Table 4-3 Disk drive hardware error messages - index Message Page ****** DISK ALARM x 4-79 4-81 DISK DPR FAULT DISK NOT INITIALIZED (w/o 56K polling) 4-83 4-85 DISK NOT READY DISK: BUS CONTROLLER FAILED SELF TEST (w/o 56K polling) 4-87 4-87 DISK: BUS CONTROLLER FAILED SELF TEST, DISK: x...
  • Page 113 Disk drive procedures 4-79 Procedure 4-39 Disk drive hardware error messages - procedures ****** DISK ALARM x where: x = disk drive = A = disk drive A = B = disk drive B cause: message is printed to report that an alarm threshold value has been exceeded.
  • Page 114 4-80 Disk drive procedures Procedure 4-39 Disk drive hardware error messages - procedures (continued) i. The recommended procedure is Procedure 4-5. ii. The alternate procedure is Procedure 4-6. (When init activity is complete, go to step b.) b.Change the disk mode to PRIME mode. Enter: (at the terminal) >DISK MODE xx (cr)
  • Page 115 Disk drive procedures 4-81 Procedure 4-39 Disk drive hardware error messages - procedures (continued) iii.. Once this procedure is complete, go to step c.) If the problem is cleared, repeat step a. Iv. If the problem is not cleared, go to step e. e.Replace the disk drive.
  • Page 116 4-82 Disk drive procedures Procedure 4-40 Disk drive hardware error messages - procedures (continued) i. See Printed Circuit Assembly Replacement in 297-1001-536: DPP Card Replacement Guide . Switch back to processor of new PCA. ii. If the problem is not cleared after PCA replacement and restart, go to step b.
  • Page 117 Disk drive procedures 4-83 Procedure 4-41 Disk drive hardware error messages - procedures cause: printed in response to the DISK MODE xx DISK NOT INITIALIZED command when an uninitialized disk is requested (w/o 56K polling) to go on line. Alarm Level: Reason Code = N/A Disk mode non-redundant Corresponds to ERRMAP entry: N/A...
  • Page 118 4-84 Disk drive procedures Procedure 4-41 Disk drive hardware error messages - procedures (continued) b. Change the disk mode to PRIME mode. Enter: (at the terminal) >DISK MODE xx (cr) where: xx = disk mode = AP = A PRIME = BP = B PRIME Proper response = DISK MODE: AP DISK MODE: BP...
  • Page 119 Disk drive procedures 4-85 Procedure 4-42 Disk drive hardware error messages - procedures (log message) where: x = Side = A = (disk drive A) = B = (disk drive B) DISK NOT READY SIDE x cause: printed when the system Disk Interface is going through initialization and the indicated drive unit does not return READY status after 30 seconds.
  • Page 120 4-86 Disk drive procedures Procedure 4-42 Disk drive hardware error messages - procedures (continued) Select: The recommended procedure is Procedure 4-5. ii) The alternate procedure is Procedure 4-6. (When init activity is complete, go to step c.) (If unsuccessful, go to step d.) c.
  • Page 121 Disk drive procedures 4-87 Procedure 4-42 Disk drive hardware error messages - procedures (continued) see Disk Drive Procedures, Replacing Disk Drive, Procedure 4-8. ii) Repeat steps a, b, and c. (If unsuccessful, go to step f.) Call for technical assistance. Procedure 4-43 Disk drive hardware error messages - procedures (log message)
  • Page 122 4-88 Disk drive procedures Procedure 4-43 Disk drive hardware error messages - procedures (continued) System Recovery Action DPP disk system reattempts self-test. Craftsperson Activity a. Power down the suspect disk by pulling J8. Wait for drive to stop completely before continuing to step b.
  • Page 123 Disk drive procedures 4-89 Procedure 4-43 Disk drive hardware error messages - procedures (continued) Select: The recommended procedure is Procedure 4-5. ii) The alternate procedure is Procedure 4-6. (If unsuccessful, go to step e.) (When init activity is complete, go to step d.) d.
  • Page 124 4-90 Disk drive procedures Procedure 4-43 Disk drive hardware error messages - procedures (continued) CAUTION Since all circuit assemblies in the DPP are static sensitive, be careful handling them. See Disk Drive Procedures, Replacing Disk Drive, Procedure 4-8. ii) Repeat steps c, d, and e. (If unsuccessful, go to step g.) g.
  • Page 125 Disk drive procedures 4-91 Procedure 4-44 Disk drive hardware error messages - procedures (continued) Craftsperson Activity If disk mode went to nonredundant, initialize the disk. CAUTION Improper performance of this procedure may cause a loss of data. Make sure the operational disk drive is in DISK ONLY mode before entering commands.
  • Page 126 4-92 Disk drive procedures Procedure 4-44 Disk drive hardware error messages - procedures (continued) See Printed Circuit Assembly Replacement in 297-1001-536: DPP Card Replacement Guide . ii) If the problem is not cleared after PCA replacement and restart, go to step e. Return the original PCA to its position before proceeding.
  • Page 127 Disk drive procedures 4-93 Procedure 4-45 Disk drive hardware error messages - procedures (continued) Drive = bb = the drive unit number (in Hex) ranging from 0 to 15, plus the two highest order bits have special meaning. The 80-bit ON indicates a data output was to occur.
  • Page 128 4-94 Disk drive procedures Procedure 4-45 Disk drive hardware error messages - procedures (continued) Writes: WA = To A WB = To B To both when redundant: W1 = seek prime W2 = seek standby W3 = write prime W4 = write standby Parameters = ff gg hh(1) hh(2) hh(3) kk(1) kk(2) ff = quantity of sectors involved, (in Hex).
  • Page 129 Disk drive procedures 4-95 Procedure 4-45 Disk drive hardware error messages - procedures (continued) Craftsperson Activity · the message occurs more than three times in one hour, or, · the disk mode goes to ONLY mode (non-redundant); perform the following steps: a.
  • Page 130 4-96 Disk drive procedures Procedure 4-45 Disk drive hardware error messages - procedures (continued) See Switch and Status Panel Operation, Ch. 7 in 297-1001-536: DPP Card Replacement Guide . ii) Repeat steps a, b, and c. (If unsuccessful, go to step e.) e.
  • Page 131 Disk drive procedures 4-97 Procedure 4-46 Disk drive hardware error messages - procedures (log message) where: Auxiliary Status = xx = contents of the bus controller Auxiliary Status Register, (in Hex). DISK: BUS ERROR (TIME Interrupt Status = yy = contents of the bus OUT) Interrupt Status Register, (in Hex).
  • Page 132 4-98 Disk drive procedures Procedure 4-46 Disk drive hardware error messages - procedures (continued) Assign disk parameters.: PA = To A PB = To B RC = recalibrate Reads: RA = from A RB = from B From prime: R1 = read prime R2 = read standby (if read prime failed) Relocate track from standby (if standby...
  • Page 133 Disk drive procedures 4-99 Procedure 4-46 Disk drive hardware error messages - procedures (continued) Other Alarm Indications Default: Status Panel: Minor Audible: Minor Customer-Selected Status Panel: Audible: System Recovery Action None Craftsperson Activity · the message occurs more than three times in one hour, or, ·...
  • Page 134 4-100 Disk drive procedures Procedure 4-46 Disk drive hardware error messages - procedures (continued) Enter: (at the terminal) >DISK MODE xx (cr) where: xx = disk mode = AP = A PRIME = BP = B PRIME Proper response = DISK MODE: AP DISK MODE: BP For any other response, refer to the procedure for that message and perform the activities...
  • Page 135 Disk drive procedures 4-101 Procedure 4-47 Disk drive hardware error messages - procedures this format valid for: DISK: BUS ERROR, m PHASE: n JOB: w a. 380-Mbyte disk drives w/56K polling; if an COMMAND: x DISK: y, z NT6M94AA PCA is mounted in slots A7 and B7 of (w/56K polling) the DPP, then, 56K polling is equipped.
  • Page 136 4-102 Disk drive procedures Procedure 4-47 Disk drive hardware error messages - procedures (continued) Bus Free Selection Reselection Message In Message Out Command In Command Out Data Status Unknown w = Job = Job name Read Redundant Write Redundant Read Single Write Single Backup Read Disk Capacity...
  • Page 137 Disk drive procedures 4-103 Procedure 4-47 Disk drive hardware error messages - procedures (continued) Craftsperson Activity · the message occurs more than three times in one hour, or, · the disk mode goes to ONLY mode (non-redundant); perform the following steps: a.
  • Page 138 4-104 Disk drive procedures Procedure 4-47 Disk drive hardware error messages - procedures (continued) See Printed Circuit Assembly Replacement in 297-1001-536: DPP Card Replacement Guide . ii) If the problem is not cleared after PCA replacement and restart, go to step e. Return the original PCA to its position before proceeding.
  • Page 139 Disk drive procedures 4-105 Procedure 4-48 Disk drive hardware error messages - procedures (log message) DISK: COM- where: Disk Status = cc = status byte returned by the bus controller during the status phase of of the MAND ERROR SCSI (Small Computer System Interface) bus DISK STATUS: cycle, (in Hex).
  • Page 140 4-106 Disk drive procedures Procedure 4-48 Disk drive hardware error messages - procedures (continued) Assign disk parameters.: PA = To A PB = To B RC = recalibrate Reads: RA = from A RB = from B From prime: R1 = read prime R2 = read standby (if read prime failed) Relocate track from standby (if standby...
  • Page 141 Disk drive procedures 4-107 Procedure 4-48 Disk drive hardware error messages - procedures (continued) Other Alarm Indications Default: Status Panel: Minor Audible: Minor Customer-Selected Status Panel: Audible: System Recovery Action Varies, depending upon the specific error type. Craftsperson Activity a. Initialize the disk. CAUTION Improper performance of this procedure may cause a loss of data.
  • Page 142 4-108 Disk drive procedures Procedure 4-48 Disk drive hardware error messages - procedures (continued) Select: The recommended procedure is Procedure 4-5. ii) The alternate procedure is Procedure 4-6. (When init activity is complete, go to step b.) b. Change the disk mode to PRIME mode. Enter: (at the terminal) >DISK MODE xx (cr)
  • Page 143 Disk drive procedures 4-109 Procedure 4-48 Disk drive hardware error messages - procedures (continued) CAUTION Since all circuit assemblies in the DPP are static sensitive, be careful handling them. See Disk Drive Procedures, Replacing Disk Drive, Procedure 4-8. ii) Repeat steps a and b. (If unsuccessful, go to step f.) Call for technical assistance.
  • Page 144 4-110 Disk drive procedures Procedure 4-49 Disk drive hardware error messages - procedures (continued) x = Command = Command Name Format Unit Inquiry Mode Select Mode Sense Read Read Capacity Read Defect M Read Defect G Reassign Block Request Sense Seek Rezero Unit Write Test Unit Ready...
  • Page 145 Disk drive procedures 4-111 Procedure 4-49 Disk drive hardware error messages - procedures (continued) Hardware Error, No Seek Complete Write Fault Drive Not Ready Drive Not Selected No Track Zero No ID Field Address Mark RAM Failure SCSI Msg Reject Error SCSI Hardware Error Select Reselect Failed Illegal Request,...
  • Page 146 4-112 Disk drive procedures Procedure 4-49 Disk drive hardware error messages - procedures (continued) Other Alarm Indications Default: Status Panel: Minor Audible: Minor Customer-Selected Status Panel: Audible: System Recovery Action Varies, depending upon the specific error type. Craftsperson Activity a. Initialize the disk. CAUTION Improper performance of this procedure may cause a loss of data.
  • Page 147 Disk drive procedures 4-113 Procedure 4-49 Disk drive hardware error messages - procedures (continued) iii) After making any necessary corrections, repeat steps a and b. If still unsuccessful, switch processors. Repeat steps A and B. If successful, to to step D. If unsuccessful, go to step E.
  • Page 148 4-114 Disk drive procedures Procedure 4-50 Disk drive hardware error messages - procedures (log message) DISK: DMA where: xx = DMA register data INTERRUPT DMA REGISTERS: cause: Disk Interface DMA controller generates an xx(1) xx(2) xx(3) interrupt. xx(4) xx(5) xx(6) xx(7) Alarm Level: Reason Code = 27...
  • Page 149 Disk drive procedures 4-115 Procedure 4-51 Disk drive hardware error messages - procedures cause: printed upon termination due to a failure of DISK: FAILURE GOING ON bringing a formerly off-line disk drive unit back LINE on-line. Alarm Level: Reason Code = N/A Corresponds to ERRMAP entry: N/A System Default: Type: N/A...
  • Page 150 4-116 Disk drive procedures Procedure 4-51 Disk drive hardware error messages - procedures (continued) b. Change the disk mode to PRIME mode. Enter: (at the terminal) >DISK MODE xx (cr) where: xx = disk mode = AP = A PRIME = BP = B PRIME Proper response = DISK MODE: AP DISK MODE: BP...
  • Page 151 Disk drive procedures 4-117 Procedure 4-51 Disk drive hardware error messages - procedures (continued) ii) If the problem is not cleared after PCA replacement and restart, go to step e. Return the original PCA to its position before proceeding. e. Replace the suspect disk drive. See Disk Drive Procedures, Replacing Disk Drive.
  • Page 152 4-118 Disk drive procedures Procedure 4-52 Disk drive hardware error messages - procedures (continued) System Recovery Action None Craftsperson Activity a. See the Craftsperson Activities section for the DISK: COMMAND ERROR message. b. If those procedures do not clear the problem, call for technical assistance.
  • Page 153 Disk drive procedures 4-119 Procedure 4-54 Disk drive hardware error messages - procedures cause: Disk Interface CPU executes an illegal DISK: RST-7 instruction. (w/o 56K polling) Alarm Level: Reason Code = 27 No disk mode change Corresponds to ERRMAP entry: DISK ER MESSAGE System Default: Type: Minor Level: 0...
  • Page 154 4-120 Disk drive procedures Procedure 4-55 Disk drive hardware error messages - procedures where: x = specific device (that failed) DISK: x FAILURE = PROCESSOR = EPROM = PRAM1 (w/56K polling) = SRAM = STACK = PC RANGE = SRAM2 cause: disk interface has failed a major diagnostic routine.
  • Page 155 Disk drive procedures 4-121 Procedure 4-56 Disk drive hardware error messages - procedures cause: printed on termination due to failure of the format FORMAT FAILED operation as a result of the DISK FORMAT A (or B) command. Alarm Level: Reason Code = N/A Corresponds to ERRMAP entry: N/A System Default: Type: N/A...
  • Page 156 4-122 Disk drive procedures Procedure 4-56 Disk drive hardware error messages - procedures (continued) For other responses, see the procedure for that message and perform the activities listed. ii) If successful, go to step b. (If unsuccessful, go to step d.) b.
  • Page 157 Disk drive procedures 4-123 Procedure 4-56 Disk drive hardware error messages - procedures (continued) ii) If power and cabling are correct, go to step e. - Before moving the locations of any cables and/or connector arrangements, verify the locations of the cables in the Site Configuration Specifications for the particular Office.
  • Page 158 4-124 Disk drive procedures Procedure 4-57 Disk drive hardware error messages - procedures (continued) Other Alarm Indications Default: Status Panel: Audible: Customer-Selected Status Panel: Audible: System Recovery Action Termination of requested disk job (DISK INITIALIZATION). Craftsperson Activity a. Switch processors. Initialize the disk. CAUTION Improper performance of this procedure may cause a loss of data.
  • Page 159 Disk drive procedures 4-125 Procedure 4-57 Disk drive hardware error messages - procedures (continued) See Printed Circuit Assembly Replacement in 297-1001-536: DPP Card Replacement Guide . ii) Repeat steps a and b. iii) If the problem is not cleared after PCA replacement and restart, go to step d.
  • Page 160 4-126 Disk drive procedures Procedure 4-58 Disk drive hardware error messages - procedures (continued) System Recovery Action Based on corresponding disk error message. Craftsperson Activity a. See the disk error message printed along with this message for more definitive information of the fault.
  • Page 161 Disk drive procedures 4-127 Procedure 4-60 Disk drive hardware error messages - procedures where: xxxxx = number of bad tracks. xxxxx BAD TRACKS (w/o 56K polling) cause: printed during: a. initialization procedure, to show the number of bad tracks on the disk, detected by the mapping process.
  • Page 162 4-128 Disk drive procedures Procedure 4-60 Disk drive hardware error messages - procedures (continued) The recommended procedure is Procedure 4-5. ii) The alternate procedure is Procedure 4-6. (When init activity is completed, go to step b.) iii) for 70 Mbyte and 140 Mbyte disks, enter defective tracks from list sent by manufacturer.
  • Page 163 Disk drive procedures 4-129 Procedure 4-60 Disk drive hardware error messages - procedures (continued) iii) See Printed Circuit Assembly Replacement in 297-1001-536: DPP Card Replacement Guide . iv) If the problem is not cleared after PCA replacement and restart, go to step d. Return the original PCA to its position before proceeding.

  • Page 164: Polling Disks From A Non-Redundant Mode

    4-130 Disk drive procedures Polling disks from a non-redundant mode The DPP normally stores AMA data simultaneously on both disks . However, if the DPP can’t be polled, the disks fill up with AMA data. When both disks reach 95% full, the disk system goes to the nonredundant (ONLY) mode.
  • Page 165 Disk drive procedures 4-131 Procedure 4-61 Polling disks from a nonredundant mode (continued) Step Description Notes Enter: (at the terminal) Write any remaining call records to the AMA data file. >IDXMAINT CREATE FILE AMA (cr) Enter: (at the terminal) Display the currently active files. The active files on the current disk must be closed >LSTACT (cr) before switching disk modes.
  • Page 166 4-132 Disk drive procedures Procedure 4-61 Polling disks from a nonredundant mode (continued) Step Description Notes CAUTION Do not change the disk mode to PRIME; this would cause one of the disks to write all of its data onto the other disk. All of the data on the other disk would be lost.
  • Page 167 Disk drive procedures 4-133 Procedure 4-61 Polling disks from a nonredundant mode (continued) Step Description Notes Enter: (at the terminal) Display the active files on the current disk. Close any active files on the current disk >LSTACT (cr) before switching disk modes. System response = FILE OPEN: ii ss tt bbbb...
  • Page 168 4-134 Disk drive procedures Procedure 4-61 Polling disks from a nonredundant mode (continued) Step Description Notes CAUTION Do not change the disk mode to PRIME; this would cause one of the disks to write all of its data onto the other disk. All of the data on the other disk would be lost.
  • Page 169 Disk drive procedures 4-135 Procedure 4-61 Polling disks from a nonredundant mode (continued) Step Description Notes a. If the current disk mode is AO: Change from disk ONLY mode to disk PRIME mode. Perform this step before any Enter: (at the terminal) new AMA data is received.
  • Page 170 4-136 Disk drive procedures Procedure 4-61 Polling disks from a nonredundant mode (continued) Step Description Notes Enter: (at the terminal) For the active processor. >RSERR ACT xx (cr) For the standby processor. >RSERR STDBY xx (cr) Clear any alarms associated with the nonredundant disk condition.

  • Page 171: Dpp Man-Machine Interface

    DPP Man-machine interface DPP commands - an overview The DPP supports an extensive set of commands and messages for maintaining the DPP. DPP messages inform you of important DPP events or errors. Then you can access the DPP commands and messages at the Maintenance Administration Position (MAP) terminal (from the DPP MAP level) and from the DPP Emergency Administration Terminal (EAT).

  • Page 172: Figure 5-1 Dpp Map Display

    5-2 DPP man-machine interface From the command interpreter level of the MAP, the following command sequence telescopes to the DPP MAP level: MAPCI;MTC;IOD;DPP AMA Figure 5-1 DPP MAP display Trks • • • • • • • • Quit IOD: •...

  • Page 173: Dpp Unit Messages

    DPP man-machine interface 5-3 - DPP commands. The DMS-100 checks these commands for syntax and sends them to the DPP for processing. • DIRECT mode. In Direct mode, the DPP operates on commands sent directly to the DPP. Since the DMS-100 does not check for syntax, this mode is recommended only for experienced users.

  • Page 174: Swact Processor Changeover

    5-4 DPP man-machine interface the MAP level in the DIRECT mode, or from the EAT. Under no conditions may any of these commands be issued in the normal MAP mode. For more detailed information on the short form maintenance commands, refer to 297-1001-821.

  • Page 175: Active And Standby Processor Command Modes

    DPP man-machine interface 5-5 Active and standby processor command modes The DPP software program includes several commands allowing you to activate a command process for a specific DPP processor. You may direct the command activity to a specific processor by specifying ACT for the active processor, or STDBY for the standby processor.
  • Page 176 5-6 DPP man-machine interface Table 5-1 ERRMAP entries to log message cross-reference ERRMAP message, alarm, level (notes) Associated log message(s) (notes) STANBY PROC N/A, MAJOR, 0 STANBY PROC NOT AVAILABLE PROC FORCE SELECTED - NON REDUNDANT COMM DOWN TO STANBY PROC NO BLK LAST HR, MINOR, 0 NO BLOCK LAST HOUR DSI STNBY FAIL, MINOR, 0...
  • Page 177 DPP man-machine interface 5-7 Table 5-1 ERRMAP entries to log message cross-reference (continued) ERRMAP message, alarm, level (notes) Associated log message(s) (notes) ERROR CTL CONNFL, MAJOR, 0 EC-CF-ALM ERROR CTL INCON, MAJOR, 0 EC-IC-ALM DMA COMM FAIL, MAJOR, 2 DMA TIME OUT ALARM PROC STAT ALARM, MAJOR, 2 CTC MP-ST-ALM CLK MP-ST-ALM...
  • Page 178 5-8 DPP man-machine interface Table 5-1 ERRMAP entries to log message cross-reference (continued) ERRMAP message, alarm, level (notes) Associated log message(s) (notes) EXCIDX FILE FULL LOGIDX FILE FULL BAD xxxIDX FILE SITE FILE ERROR, MAJOR, 0 INVALID SITE DATA FILE NO SITE DATA ON DISK SITDAT FILE yyyyyy ERROR: ee STAT FILE ERROR, MINOR, 0...
  • Page 179 DPP man-machine interface 5-9 Table 5-1 ERRMAP entries to log message cross-reference (continued) ERRMAP message, alarm, level (notes) Associated log message(s) (notes) CP FAULT , MAJOR, 1 (If an NT6M94AA PCA is BOOTCP FILE yyyyyy ERROR: ee mounted in slots A7 and B7 of the DPP chassis, then, 56K polling is equipped.) CP ACTIVATE FAIL CP AUDIT FAIL...
  • Page 180 5-10 DPP man-machine interface Table 5-1 ERRMAP entries to log message cross-reference ERRMAP message, alarm, level (notes) Associated log message(s) (notes) NO DISK ON LINE DISK: BOTH DISKS CONTAINED PREFERRED STATUS DISK NOT READY SIDE x DISK: DMA INTERRUPT DISK: BUS CONTROLLER FAILED SELF TEST DISK: BUS CONTROLLER FAILED SELF TEST , DISK: x DISK: BUS CONTROLLER INTERRUPT WHILE...
  • Page 181 DPP man-machine interface 5-11 Table 5-2 Description of ERRMAP entries (continued) ERRMAP entry, type, level (notes) Comments (notes) Reset: a. automatically, when communication to the standby processor succeeds. b. when the processor status becomes PRIME mode. Notes: None NO BLK LAST PER, Minor, 0 Cause: the DPP is not receiving blocks from the DMS-100 within a desired period of time.
  • Page 182 5-12 DPP man-machine interface Table 5-2 Description of ERRMAP entries (continued) ERRMAP entry, type, level (notes) Comments (notes) Reset: no automatic reset, alarm cleared by input of RSERR command. Notes: receiving a block with an error block format causes and alarm message: B0 DSI TIME OUT B2 DSI TIME OUT depending on which DSI PCA is active,...
  • Page 183 DPP man-machine interface 5-13 Table 5-2 Description of ERRMAP entries (continued) ERRMAP entry, type, level (notes) Comments (notes) 2 MMI LNKS DOWN, Major, 0 Cause: loss of MMI comm to the DMS-100. Test: every audit period (settable; typically every 3 minutes.) Reset: no automatic reset, alarm cleared by input of RSERR command.
  • Page 184 5-14 DPP man-machine interface Table 5-2 Description of ERRMAP entries (continued) ERRMAP entry, type, level (notes) Comments (notes) PROC STAT ALARM, Major, 2 Cause: a. CTC (Counter Timer Chip) counter error. b. bad error control I/O status byte (ERIOST), status bit 1 is set. Test: when performing processor switch.
  • Page 185 DPP man-machine interface 5-15 Table 5-2 Description of ERRMAP entries (continued) ERRMAP entry, type, level (notes) Comments (notes) Reset: no automatic reset, alarm cleared by input of RSERR command. Notes: message and alarm set only once for each bad call record. TAPE BLOCK LOST , Major, 0 Cause: failure to transfer a data block from the DSI PCA to the main CPU.
  • Page 186 5-16 DPP man-machine interface Table 5-2 Description of ERRMAP entries (continued) ERRMAP entry, type, level (notes) Comments (notes) Notes: when disk usage reaches 99% of available space, disk system goes to ONLY (non-redundant) mode. SECND FILES DEL, Minor, 0 Cause: disk usage has exceeded 70% of available disk space.

  • Page 187: Table

    DPP man-machine interface 5-17 Table 5-2 Description of ERRMAP entries (continued) ERRMAP entry, type, level (notes) Comments (notes) Reset: RSERR input command clears alarm; alarm is set at next minute if disk usage is still greater than 70%. Notes: a. not checked and set if disk usage is greater than 90%;...

  • Page 188: Cp Fault , Major

    5-18 DPP man-machine interface Table 5-2 Description of ERRMAP entries (continued) ERRMAP entry, type, level (notes) Comments (notes) Test: no periodic check; tested when: a. invoking the commands SITDAT READ, SITDAT WRITE. b. scheduled SITDAT read on every hour boundary. Reset: cleared by RSERR command.

  • Page 189: Disk Mode Alarm, Major

    DPP man-machine interface 5-19 Table 5-2 Description of ERRMAP entries (continued) ERRMAP entry, type, level (notes) Comments (notes) Notes: None DISK MODE ALARM, Major, 0 Cause: change disk mode form PRIME to ONLY Test: a. disk mode check at hour boundary, if disk is found to be in ONLY mode, alarm is set.
  • Page 190 5-20 DPP man-machine interface Table 5-2 Description of ERRMAP entries ERRMAP entry, type, level (notes) Comments (notes) Reset: cleared by RSERR command. Notes: refer to Table 5-1 for corresponding CP error messages. 297-1001-537 Standard 01.02 December 1993...

  • Page 191: Automatic Message Accounting (Ama) Messages

    Automatic message accounting (AMA) messages See the appendix for the AMA messages in this chapter. Procedures 6-1 through 6-10 provide the steps for the automatic message accounting (AMA) messages. Procedure 6-11 provides the procedure for recovering from polling an improper AMA data block. Table 6-1 AMA messages - index Message...

  • Page 192: Bx.25 Inter-Task Comm Error

    6-2 Automatic message accounting (AMA) messages Procedure 6-1 AMA messages - procedures (log message) cause: the polling task on the Main processor can’t communicate with the 56K Comm processor. BX.25 INTER-TASK COMM Generally, any error producing this message will ERROR also be caught by the RFT task or MP/CP audit (w/56K polling) task.
  • Page 193 Automatic message accounting (AMA) messages 6-3 Procedure 6-1 AMA messages - procedures (continued) CAUTION (cont’d) BOOT ACT command causes a temporary loss of MMI between the DMS-100 and DPP unit while the DPP unit is loading. When issued, wait two to five minutes before entering any other commands to allow the DPP load to complete and the MMI links to be restored.

  • Page 194: Excessive Invalid Blocks

    6-4 Automatic message accounting (AMA) messages Procedure 6-2 AMA messages - procedures (log message) cause: exception report printed whenever the daily count of invalid call record blocks reaches the threshold EXCESSIVE INVALID value specified by the VALPARM INVALID site BLOCKS data entry.

  • Page 195: Invalid Call Record Format

    Automatic message accounting (AMA) messages 6-5 Procedure 6-3 AMA messages - procedures (continued) Customer-Selected Type: Level: Alarm Level Other Alarm Indications Default: Status Panel: Major Audible: Major Customer-Selected Status Panel: Audible: System Recovery Action None Craftsperson Activity Verify and correct the data coming into the DPP system from the DMS-100.
  • Page 196 6-6 Automatic message accounting (AMA) messages Procedure 6-4 AMA messages - procedures Other Alarm Indications Default: Status Panel: Audible: Customer-Selected Status Panel: Audible: System Recovery Action The invalid records are stored on disk (exception file). Craftsperson Activity a. Analyze the invalid call record printout to determine the discrepancy.
  • Page 197 Automatic message accounting (AMA) messages 6-7 Procedure 6-5 AMA messages - procedures Craftsperson Activity a. Verify that data should be received at this time To examine the hour boundaries currently assigned, - Enter: (at the terminal) >AMAHRS (cr) Proper response = BLOCK CHECK START xx END xx HOURS where: xx = hour of day ii) To assign or change hour boundaries,...

  • Page 198: Strct Code Index Out Of Range

    6-8 Automatic message accounting (AMA) messages Procedure 6-6 AMA messages - procedures cause: output when no data is found in yesterday’s NO DATA ACCUMULATED statistics file. Alarm Level: Reason Code = N/A Corresponds to ERRMAP entry: N/A System Default: Type: N/A Level: N/A Customer-Selected Type:...

  • Page 199: Unsupported Strct Code

    Automatic message accounting (AMA) messages 6-9 Procedure 6-7 AMA messages - procedures (continued) Other Alarm Indications Default: Status Panel: Audible: Customer-Selected Status Panel: Audible: System Recovery Action None Craftsperson Activity a. 1st occurrence - none. b. Call for technical assistance if the problem persists;...

  • Page 200: Duplicate Blocks Rejected

    6-10 Automatic message accounting (AMA) messages Procedure 6-8 AMA messages - procedures System Recovery Action Retry. Craftsperson Activity a. 1st occurrence - none. b. Call for technical assistance if problem persists; problem may be in the DMS-100. Procedure 6-9 AMA messages - procedures (log message) where: xxx = the number of blocks rejected xxx DUPLICATE BLOCKS...
  • Page 201 Automatic message accounting (AMA) messages 6-11 Procedure 6-10 AMA messages - procedures (log message) cause: printed when an attempt to update a record index file fails. AMAIDX FILE FAILURE , (log message) EXCIDX FILE FAILURE . (log message) LOGIDX FILE FAILURE Alarm Level: Reason Code = 03 Processor switch occurs...

  • Page 202: Activities To Recover From Polling An Improper Ama Data Block

    6-12 Automatic message accounting (AMA) messages Activities to recover from polling an improper AMA data block Due to current Collector implementations, the Collector does not advance when it encounters an improper AMA data block. Each polling session attempts to poll for the standard 100 data block file. When an improper AMA data block is detected, the Collector disconnects the polling session.
  • Page 203 Automatic message accounting (AMA) messages 6-13 Procedure 6-11 Polling an improper AMA data block - recovery procedure Step Description Notes Find the Improper AMA Blocks that Caused Output a list of closed AMA files. Polling Stoppage The following output is shown for example Enter: (at the terminal) purposes only;...
  • Page 204 6-14 Automatic message accounting (AMA) messages Procedure 6-11 Polling an improper AMA data block - recovery procedure (continued) Step Description Notes where: Pay attention to the BLOCK SEQUENCE # Bytes 1-4 = 00 00 37 71 = 3771(H) = and the CREATION DATE. The sequence (cont’d) 14193(D) = block sequence number of each new block should be 1...
  • Page 205 Automatic message accounting (AMA) messages 6-15 Procedure 6-11 Polling an improper AMA data block - recovery procedure (continued) Step Description Notes VS 12: 5 BLKS, 30 DA SECNDRY, AMA SEQ #013690 (cont’d) VS 13: 290 BLKS, 30 DA SECNDRY, AMA SEQ #013695 VS 14: 17 BLKS, 30 DA SECNDRY,...

  • Page 206: Collector Demand Poll Of Secondary Data

    6-16 Automatic message accounting (AMA) messages Collector demand poll of secondary data Since the last two blocks in VS 15 (in our example) could not be polled, the Collector must initiate a SECONDARY polling session of these 60 blocks minus the two bad blocks . From step No.
  • Page 207 Automatic message accounting (AMA) messages 6-17 Procedure 6-12 Recover AMA data from DIRP - DIRP block number not known Step Description Notes Contact the data center and determine the time frame of the missing AMA, the sequence number of the last DPP block the data center received before the DPP outage, and the first sequence number received following the DPP outage.
  • Page 208 6-18 Automatic message accounting (AMA) messages Procedure 6-12 Recover AMA data from DIRP - DIRP block number not known (continued) Step Description Notes Structure Code = 00700C Call Code = 043C ORIG NPA = 043C ORIG Number = 820780C TERM NPA = 00802C (note the zeros) TERM Number = 8385792C Connect Time = 0000152C C = end of field...
  • Page 209 Automatic message accounting (AMA) messages 6-19 Procedure 6-12 Recover AMA data from DIRP - DIRP block number not known (continued) Step Description Notes Do the above for each Parallel Volume and notice the “LAST MODIFIED” date and time of each file. Using these dates and times, locate the Parallel Volume collecting AMA during the time frame the data center is requesting.
  • Page 210 6-20 Automatic message accounting (AMA) messages Procedure 6-12 Recover AMA data from DIRP - DIRP block number not known (continued) Step Description Notes Enter: >FILTER DISPLAY <structure code from add> Enclose the structure in single quotes. This outputs a record with all the fields you just defined.
  • Page 211 Automatic message accounting (AMA) messages 6-21 Procedure 6-12 Recover AMA data from DIRP - DIRP block number not known (continued) Step Description Notes Enter: >FILTER ENABLE >DUMP CALL DETAILS This filters through the entire Parallel File looking for the record defined. One record should match the data input into the FILTER.
  • Page 212 6-22 Automatic message accounting (AMA) messages Procedure 6-12 Recover AMA data from DIRP - DIRP block number not known (continued) Step Description Notes Input: ><call code of record> The Filter function prompts you for numerous fields. Inputting the originating number and connect time should be sufficient to locate the data block.
  • Page 213 Automatic message accounting (AMA) messages 6-23 Procedure 6-12 Recover AMA data from DIRP - DIRP block number not known (continued) Step Description Notes b. Make sure the connect time is the same,. If the connect time of the record is 000015cC the filter must be either of the below: CONNECT TIME: 0000152* CONNECT TIME: 0000152C...
  • Page 214 6-24 Automatic message accounting (AMA) messages Procedure 6-12 Recover AMA data from DIRP - DIRP block number not known (continued) Step Description Notes Copy the Parallel AMA file to the tape. >DIRPCOPY AMA <filename> Tx filename = parallel file name; if the name <start>...

  • Page 215: Routine Maintenance

    Routine maintenance Procedures Routine DPP system maintenance may include the following procedures: • testing (and replacing, if necessary) the status and alarm lamps • checking other indicator lamps • checking system temperature alarms • cleaning (and replacing, if necessary) the fans Status and alarm lamp maintenance The lamps for the status and alarm indicators on the switch and status panel are special light bar devices, composed of four light emitting diodes (LEDs)
  • Page 216 7-2 Routine maintenance Figure 7-1 DPP switch and status panel Switch and Status Panel CRIT CHAS. GND. ROVER Interface Panel ROVER XMIT CHAS. GND. LEGEND: A Processor Status Lamps Processor Status Lamps ALM = Alarm CRIT = Critical = PRIME Mode MAJ = Major ONL = ONLY Mode = Minor...
  • Page 217 Routine maintenance 7-3 Procedure 7-1 Testing and Replacing the Status and Alarm Lamp CAUTION Only qualified maintenance personnel should replace the Status and Alarm lamp. Step Description Notes Remove the front panel of the DPP, See Figure 7-2. A chassis. Note which lamps are already lit.
  • Page 218 7-4 Routine maintenance Figure 7-2 Removing DPP system front panel Thumb Thumb Screws: Screws: Loosen Loosen, Do Not Do Not Remove Remove Thumb Thumb Screws: Screws: Loosen, Loosen, Do Not Do Not Remove Remove 297-1001-537 Standard 01.02 December 1993...

  • Page 219: System Temperature Sensor(S)

    Routine maintenance 7-5 System temperature sensor(s) The system temperature ensors are located inside the power supplies. These sensors provide an early warning alarm indicating that the DPP is exceeding its recommended operating temperature. To test the external temperature alarm circuitry at the J16 connector on the input connector panel, short pins 7 and 8 together.

  • Page 220: Fans

    7-6 Routine maintenance Fans There are three ventilation fans in the DPP . Two are on the rear of the A and B chassis. The third fan is inside the DPP in the B chassis behind the Rover Interface Panel. Cleaning the Fan foam filter The two fans on the rear have a foam filter under the metallic screen.
  • Page 221 Routine maintenance 7-7 Figure 7-3 Removing the Fan filter Rear of Chassis Fan Screen Removable Foam Filter Filter Cover Slot Typical 4 Places (Insert Screwdriver to Pry Cover Off) DPP Recovery and Routine Maintenance Guide BCS35 and up...

  • Page 222: Fan Replacement

    7-8 Routine maintenance The Cooling Fans at the rear Lubricating the fans Since the fans have permanently lubricated bearings, they never need lubricating or oil servicing. Replacing the fans Use Procedure 7-3 when replacing the cooling fans at the rear of the DPP chassis.
  • Page 223 Routine maintenance 7-9 Procedure 7-3 Replacing the Cooling fans Step Description Notes Since all circuit assemblies, disk drives, and other hardware in the DPP are static sensitive, be cautious. Wear a wrist grounding strap when working with the DPP. Jacks at the lower right of the Rover Interface panel (B chassis) and the lower right of the Switch and Status Panel (A chassis) are provided to accept the banana plug connection on the end of a grounding strap.
  • Page 224 7-10 Routine maintenance Procedure 7-3 Replacing the Cooling fans (continued) Step Description Notes Remove the fan mounting bracket from the Slide the base of the bracket 1/2-inch to chassis. the left and then pull back 1-inch from the center of the chassis until the bracket is free of the chassis base.
  • Page 225 Routine maintenance 7-11 Replacing the Fan behind the Rover Interface Panel Use Procedure 7-4 to replace the fan behind the Rover Interface panel on the front of the lower processor chassis. DPP Recovery and Routine Maintenance Guide BCS35 and up...
  • Page 226 7-12 Routine maintenance Procedure 7-4 Replacing the fan behind the rover interface panel Step Description Notes Since all circuit assemblies, disk drives, and other hardware in the DPP are static sensitive, be cautious. Wear a wrist grounding strap when working with the DPP.
  • Page 227 Routine maintenance 7-13 Procedure 7-4 Replacing the fan behind the rover interface panel (continued) Step Description Notes Remove the Fan Assembly. Look inside the space vacated by the Rover panel and locate the two screws securing the Fan Assembly. Remove the two fan mounting screws that Save the screws for later use.
  • Page 228 7-14 Routine maintenance Figure 7-4 Removing DPP system rear panel and fan mounting screws Remove the two slotted- head screws to remove each fan. Remove the six slotted-head screws to remove each cabinet back. 297-1001-537 Standard 01.02 December 1993...
  • Page 229 Alphabetical listing of DPP messages Symbols DISK USE > xx% PRIMARY DATA (w/ or w/o 56K polling), 4-39 ****** DISK ALARM x, 4-82 DISK VS NOT FOUND (w/o 56K polling), 4-40 DISK: BACKUP FAILED, 4-45 AMACRD FILE yyyyyy ERROR: ee (w/o 56K DISK: BOTH DISKS CONTAINED PRE- polling), 4-79 FERRED STATUS, 4-49...
  • Page 230 8-2 Alphabetical listing of DPP messages EXCESSIVE INVALID BLOCKS (w/o 56K polling), 6-4 SCSI: INTERRUPT FROM INV ALID DE- EXCESSIVE INVALID RECORDS (w/ or w/o VICE (w/56K polling), 4-69 56K polling), 6-4 SCSI: INTERRUPT WHILE IDLE (w/56K EXCIDX FILE FAILURE, 6-11 polling), 4-70 EXCIDX FILE FULL, 4-73 SITDAT FILE yyyyyy ERROR: ee (w/o 56K...
  • Page 231 List of terms Automatic Message Accounting An automatic recording system which documents all of the necessary billing data of subscriber-dialed long distance. AMATPS AMA Teleprocessing System An AMA data management system in the DMS-100 designed for use with BELLCORE AMA data. AMATPS consists of the DMS-100 Device Independent Recording Package (DIRP), the DPP, and a remote data collection center.
  • Page 232 9-2 List of terms Comprises all Central Control functions of the DMS-100. It consists of the Central Message Controller, CPU, and Data Store. Central Processor Unit Counter Timer Circuit A circuit on the DPP CPU PCA that handles vectored interrupts from various devices within the DPP that request access to the data bus for data transfer.
  • Page 233 List of terms 9-3 A circuit of the DPP that accepts AMA data from the DMS-100 MTDs. The DSI emulates a Magnetic Tape Drive on DMS-100 MTD Ports, duplicating all of the communications signals normally exchanged between the DMS-100 and an MTD. Data Terminal Ready A signal sent from a terminal device indicating to the host device its readiness to communicate.
  • Page 234 9-4 List of terms The passing of electrical energy from a statically charged body to a discharged body or ground. Statically charged bodies may store several thousand volts, which has potential to severely damage or even destroy static sensitive electronic components such as Metal Oxide Semiconductor devices.
  • Page 235 List of terms 9-5 A device on the DPP CPU PCA that controls a communications bus between the DPP processors. Random Access Memory A static, read/write memory system in which information is stored in discrete, individually addressable locations such that access time is independent of location.
  • Page 238 DMS-100 Family Distributed Processing Peripheral Recovery and Routine Maintenance Guide © YearPrev1993 Northern Telecom All rights reserved. Information is subject to change without notice. Northern Telecom reserves the right to make changes in design or components as progress in engineering and manufacturing may warrant.

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