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Nortel DMS-100 Series Manual

Hardware component replacement guide
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297-1001-539
DMS-100 Family
Distributed Processing Peripheral (DPP)
Hardware Component Replacement Guide
DPP001 and up
Standard
01.03
September 2000

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Summary of Contents for Nortel DMS-100 Series

  • Page 1 297-1001-539 DMS-100 Family Distributed Processing Peripheral (DPP) Hardware Component Replacement Guide DPP001 and up Standard 01.03 September 2000...
  • Page 3 Information is subject to change without notice. Nortel Networks reserves the right to make changes in design or components as progress in engineering and manufacturing may warrant. Changes or modification to the DMS-100 without the express consent of Nortel Networks may void its warranty and void the users authority to operate the equipment.
  • Page 5 Publication history Standard Issue 1.02 April 1997 • First standard issue.. Standad Issue 1.03 September 2000 DPP Hardware Component Replacement Guide DPP001 and up...

  • Page 7: Table Of Contents

    Contents Replacing circuit packs ....... . 1-1 How to use this document ......... . 1-1 General information about circuit pack failures .
  • Page 8 vi Contents High Performance Disk Interface circuit pack (NT6M66xx) . . . 8-1 General description ..........8-1 Replacing the H.P.
  • Page 9 Contents vii Disk Drive (NT6M72xx) ....... 19-1 Removing the Faulty Disk Drive ........19-3 Installing the Replacement Disk Drive .
  • Page 10 viii Contents SCSI Crossover (A15 and B15) circuit pack (NT6M93BA; 1- and 2-Gigabyte disk drives for Turbo DPPs) options ..... . 14-7 56K Crossover (B16) circuit pack (NT6M48AA) options .
  • Page 11 Contents ix Disk II crossover circuit pack (A15 and B15) options - part number: NT6M72AC, NT6M72AD, and NT6M72AE; 72-, 140-, and 380-Mbyte disk drives for Non-Turbo DPPs) ........13-7 Disk Controller circuit pack (A21A1 and B21A1) options - part number: 680-9143 .
  • Page 12 x Contents Remove Disk Drive (NT6M72AA, NT6M72BA, NT6M72DA, NT6M72DD, NT6M72EA, NT6M72GA, and NT6M72HA) ......19-3 Install Replacement Disk Drive (NT6M72AA, NT6M72BA, NT6M72DA, NT6M72DD, NT6M72EA, NT6M72GA, and NT6M72HA) .
  • Page 13 About this document When to use this document This document describes the hardware component replacement procedures for the Distributed Processing Peripheral (DPP). This document replaces the DPP Card Replacement Guide (297-1001-536) and contains the disk replacement procedures formerly found in the DPP Recovery and Routine Maintenance Guide (297-1001-537) and the power and ground requirements formerly found in the DPP Alarm Clearing and Performance Monitoring Guide (297-1001-543).
  • Page 14 References in this document The following documents are referred to in this document: • Distributed Processing Peripheral (DPP) Administration Guide, 297-1001-331. • Common Customer Data Schema, 297-1001-451. • Distributed Processing Peripheral (DPP) Commands and Messages Guide, 297-1001-545. What precautionary messages mean The types of precautionary messages used in NT documents include warning and caution messages.
  • Page 15 xiii >BSY Commands and fixed parameters Commands and fixed parameters that are entered at a MAP terminal are shown in uppercase letters: >BSY CTRL Variables Variables are shown in lowercase letters: BSY CTRL ctrl_no The letters or numbers that the variable represents must be entered. Each variable is explained in a list that follows the command string.

  • Page 17: Replacing Circuit Packs

    Replacing circuit packs How to use this document Use the procedures in this document when replacing circuit packs in the DPP. A general description of each circuit pack is first presented, then the replace- ment procedures are given. Next, information about option settings and circuit pack layout is presented.
  • Page 18 1-2 Replacing circuit packs Procedure 1-1 DPP troubleshooting procedure - no specific fault indicator available Step Action Notes Make sure the DPP is in an ONLY processor mode See Procedure 1-2. for the processor that does not have the fault. Enter the following commands to write the value 00 in the DRAM memory address 2204 for the off-line Data Stream Interface (DSI) Printed Circuit Assemblies...
  • Page 19 Replacing circuit packs 1-3 Procedure 1-1 DPP troubleshooting procedure - no specific fault indicator available Step Action Notes Activate the ONLY mode for the on-line processor. Enter the following commands to write the value 00 in the DRAM memory address 2204 for the off-line DSI PCAs: >DOS S DSIMAINT MEMWRITE 1 2204 00 (cr) >DOS S DSIMAINT MEMWRITE 2 2204 00 (cr)
  • Page 20 1-4 Replacing circuit packs Changing processor modes If preparing to change a circuit pack and you need to change mode, use the following procedure. Procedure 1-2 DPP circuit packs replacement - changing processor modes Action Notes Press the processor A/B Select Switch to the position (A or B) that matches the active processor.

  • Page 21: Central Processor Unit (Cpu) Circuit Pack (Nt6M62Ba)

    Central Processor Unit (CPU) circuit pack (NT6M62BA) General description The CPU circuit pack is located in slot 1 of the A and B chassis. The CPU, which has Direct Memory Access (DMA), organizes data flow throughout the DPP. Its operations can be classified according to the functions of its four major Integrated Circuits (ICs): •...

  • Page 22: Central Processor Unit Led Display

    2-2 Central Processor Unit (CPU) circuit pack (NT6M62BA) Central processor unit LED display The CPU circuit pack contains a seven-segment display Light Emitting Diode (LED) that provides a visual display of error control status. Five hardware status lines are decoded to display CPU fault conditions. The display also contains a decimal point feature that provides a visual display of the CPU clock.
  • Page 23 Central Processor Unit (CPU) circuit pack (NT6M62BA) 2-3 Procedure 2-1 Replacing CPU circuit pack (NT6M62BA) - slot 1 Step Description Make sure the replacement circuit pack matches the faulty circuit packs part number and has the correct revision level. Also, make sure the suspected faulty pack is in the standby processor.
  • Page 24 2-4 Central Processor Unit (CPU) circuit pack (NT6M62BA) Procedure 2-1 Replacing CPU circuit pack (NT6M62BA) - slot 1 Step Description Apply power to the DPP chassis by resetting the rocker switch in step 7 above. Wait for start-up activity to end and the message, Software Loaded or S/W Loaded, to be displayed.
  • Page 25 Central Processor Unit (CPU) circuit pack (NT6M62BA) 2-5 Procedure 2-1 Replacing CPU circuit pack (NT6M62BA) - slot 1 Step Description Verify replacement circuit pack has corrected original error. When all maintenance activities are complete, be sure to replace the front panel of the DPP.
  • Page 26 2-6 Central Processor Unit (CPU) circuit pack (NT6M62BA) Figure 3-1 CPU with DMA (A1 and B1) circuit pack (NT6M62BA options LED Display ♦ Note: Switch SW2 is a four-position right angle dip switch at the edge of the CPU circuit pack. 297-1001-539 Standard 01.03 September 2000...

  • Page 27: Ecac Alarm Reporting Priority Sequence - Led Display Codes

    Central Processor Unit (CPU) circuit pack (NT6M62BA) 2-7 Table 2-1 ECAC alarm reporting priority sequence - LED display codes Level Category Response Notes Major Invalid CPU Response Critical Critical Processor switch occurs. Level 3 Critical Critical Processor switch occurs. Level 2 Critical Critical Processor switch occurs.

  • Page 28: Cpu Display Control Functions

    2-8 Central Processor Unit (CPU) circuit pack (NT6M62BA) Table 2-2 CPU display control functions Mode SW2-3 SW2-4 Description Monitor Error Standard setting: data written to the error control Control Port port I/01 (88-8B; hex) is decoded, along with processor signals WAIT, HALT, RESET, BUSAK, and CLK Independent Data must be written to I/06 (9C-9F;...
  • Page 29 Central Processor Unit (CPU) circuit pack (NT6M62BA) 2-9 Table 2-3 CPU with DMA circuit pack (A1 and B1) options - part number: NT6M62BA Device type Position/setting Function Setting number Factory On-site DIP Switch Outputs = Inputs Control Logic Analyzer 1 = Off (SW2-1) Off: Output = Tristated...

  • Page 31: Eprom Circuit Pack (Nt6M63Xx)

    EPROM circuit pack (NT6M63xx) General description This PCA, in slot 2 of the A and B chassis, stores the main program for DPP operation. It contains 16 Kilobytes (Kbytes) of EPROM and 48 Kbytes of RAM. At power up, the EPROM Boot and Monitor programs automatically download the main program from disk to RAM.

  • Page 32: Eprom Ic Precautions

    Use a gentle rocking motion, regular screwdriver. Do not throw the alternately lifting each end a little at a time to EPROM away; return it to Nortel. avoid bending the pins. Sheet 1 of 2 297-1001-539 Standard 01.03 September 2000...
  • Page 33 EPROM circuit pack (NT6M63xx) 3-3 Procedure 3-1 EPROM IC installation procedure Step Description Notes Remove the new EPROM IC from its packing Use this protective package to store the material and place it on a smooth flat surface old EPROM IC until verifying the new one. so the pins are facing down and the coded identification label can be read from the top.

  • Page 34: Replacing The Eprom Circuit Pack

    3-4 EPROM circuit pack (NT6M63xx) Replacing the EPROM circuit pack To replace the EPROM circuit pack, perform the steps in the following procedure. Procedure 3-2 Replacing EPROM circuit pack (NT6M63BF, NT6M63CF, NT6M63CH, NT6M63CJ, NT6M63CL, and NT6M63FE) - slot 2 Step Description CAUTION Since all DPP circuit packs are static sensitive, be careful when handling them.
  • Page 35 EPROM circuit pack (NT6M63xx) 3-5 Procedure 3-2 Replacing EPROM circuit pack (NT6M63BF, NT6M63CF, NT6M63CH, NT6M63CJ, NT6M63CL, and NT6M63FE) - slot 2 Step Description Note: This will create an alarm. Remove power from the standby DPP chassis by operation of the +8 V dc red rocker switch on the power supply.
  • Page 36 3-6 EPROM circuit pack (NT6M63xx) Procedure 3-2 Replacing EPROM circuit pack (NT6M63BF, NT6M63CF, NT6M63CH, NT6M63CJ, NT6M63CL, and NT6M63FE) - slot 2 Step Description To place the active processor unit in PRIME mode, perform the following steps at the Switch and Status Panel of the DPP: a.
  • Page 37 EPROM circuit pack (NT6M63xx) 3-7 Figure 3-1 EPROM (A2 and B2; see note) circuit pack options EPROM PCA NT6M63 REL. Note: This figure represents the following part numbers: NT6M63BF (Non-Turbo DPP systems) NT6M63CF (Non-Turbo DPP systems) NT6M63CH (Non-Turbo DPP systems) NT6M63CJ (Turbo DPP systems) NT6M63CL (Non-Turbo DPP systems) NT6M63FE (Turbo DPP systems)

  • Page 38: Eprom Circuit Pack (A2 And B2) Options Part Number: Nt6M63Bf, Nt6M63Cl, Nt6M63Ch, Nt6M63Cf; Non-Turbo Dpps

    3-8 EPROM circuit pack (NT6M63xx) Table 3-1 EPROM circuit pack (A2 and B2) options - part number: NT6M63BF, NT6M63CL, NT6M63CH, NT6M63CF; Non-Turbo DPPs Device Setting Function IC Configuration Factory On-site Jumper Indicates (P2) presence of DRAM PCA. Jumper Configuration IC Type Jumpers Devices (P3)
  • Page 39 EPROM circuit pack (NT6M63xx) 3-9 Table 3-1 EPROM circuit pack (A2 and B2) options - part number: NT6M63BF, NT6M63CL, NT6M63CH, NT6M63CF; Non-Turbo DPPs Device Setting Function IC Configuration Factory On-site Jumper Enable address IC Type Addr (P21) decoding - for (P22) unpaged (8)2732...

  • Page 40: Eprom Circuit Pack (A2 And B2) Options - Part Number: Nt6M63Cj

    3-10 EPROM circuit pack (NT6M63xx) Table 3-2 EPROM circuit pack (A2 and B2) options - part number: NT6M63CJ; Turbo DPPs Device Setting Function IC Configuration (number) Factory On-site Jumper Indicates presence of (P2) DRAM PCA. Jumper IC Type Jumpers Devices Configuration set-up for (P3) (for U5)

  • Page 41: Eprom Circuit Pack (A2 And B2) Options - Part Number: Nt6M63Fe

    EPROM circuit pack (NT6M63xx) 3-11 Table 3-2 EPROM circuit pack (A2 and B2) options - part number: NT6M63CJ; Turbo DPPs Device Setting Function IC Configuration (number) Factory On-site Switch None Used Note: There are no customer-definable options on this circuit pack. Use this data for verification during initial DPP system installation and/or circuit pack replacement to make sure the replacement circuit pack is set up the same as the circuit pack being replaced.
  • Page 42 3-12 EPROM circuit pack (NT6M63xx) Table 3-3 EPROM circuit pack (A2 and B2) options - part number: NT6M63FE; Turbo DPPs Device Setting Function IC Configuration (number) Factory On-site Jumper IC Type Enable address decoding - Addr (P21) for unpaged memory, (P22) (8)2732 based on the IC used.

  • Page 43: Memory Expansion Circuit Pack (Nt6M64Aa)

    Memory expansion circuit pack (NT6M64AA) General description The Expanded Memory circuit pack in slot 3 of the A and B chassis provides DRAM for temporarily storing various data in the DPP. DRAM is refreshed periodically by the CPU to maintain its programmed state. Each expanded memory circuit pack contains up to 256 Kbytes (262,144 bytes) of DRAM.
  • Page 44 4-2 Memory expansion circuit pack (NT6M64AA) Procedure 4-1 Replacing Memory Expansion circuit pack (NT6M64AA) - slot 3 Step Description CAUTION Since all DPP circuit packs are static sensitive, be careful when handling them. Wear a wrist grounding strap when working with the DPP. WARNING Since the DPP is powered up during this procedure, observe all safety procedures for operations on live equipment.
  • Page 45 Memory expansion circuit pack (NT6M64AA) 4-3 Procedure 4-1 Replacing Memory Expansion circuit pack (NT6M64AA) - slot 3 Step Description Remove power from the standby DPP chassis by operation of the +8 V dc red rocker switch on the power supply. (A or B, the one with the suspected fault.) Remove the suspected faulty circuit pack.
  • Page 46 4-4 Memory expansion circuit pack (NT6M64AA) Procedure 4-1 Replacing Memory Expansion circuit pack (NT6M64AA) - slot 3 Step Description To clear all alarms on the active processor, enter the following at the maintenance terminal: >RSERR ACT 00(cr) Alarms will clear if there are no faults. Enter the following command at the maintenance terminal to Switch Processors to make the standby active: >SWACT (cr)
  • Page 47 Memory expansion circuit pack (NT6M64AA) 4-5 Figure 3-1 Memory Expansion (A3 and B3) circuit pack (NT6M64AA) options • • • DPP Hardware Component Replacement Guide DPP001 and up...

  • Page 48: Memory Expansion Circuit Pack (A3 And B3) Options - Part Number: Nt6M64Aa

    4-6 Memory expansion circuit pack (NT6M64AA) Table 4-1 Memory Expansion circuit pack (A3 and B3) options - part number: NT6M64AA Device type Position/setting Function Setting (number) Factory On-site Jumper Must be the same Card 1 as the factory set- Card 2 (card 1 in A3) ting.
  • Page 49 Error Control II and Error Control II Jumper circuit packs (NT6M65AA and NTM609AB) General description The Error Control II circuit pack is located in slot 5 of the A chassis, and the Error Control II Jumper circuit pack is in slot 5 of the B chassis. The Error Control II circuit pack constantly checks the system to verify satisfactory operation and to immediately sense and react to a fault.

  • Page 50: Error Control Ii And Error Control Ii Jumper Circuit Packs (Nt6M65Aa And Ntm609Ab)

    5-2 Error Control II and Error Control II Jumper circuit packs (NT6M65AA and NTM609AB) Replacing Error Control II circuit pack When replacing the Error Control II circuit pack in slot A5 (A chassis), use the following procedure. Procedure 5-1 Replacing Error Control II (A5) circuit pack - part number NT6M65AA Step Description CAUTION...
  • Page 51 Error Control II and Error Control II Jumper circuit packs (NT6M65AA and NTM609AB) 5-3 Procedure 5-1 Replacing Error Control II (A5) circuit pack - part number NT6M65AA Step Description Remove power from the standby chassis (A processor) by operation of the +8 V dc red rocker switch on the power supply.

  • Page 52: Replacing Error Control Ii Jumper Circuit Pack

    5-4 Error Control II and Error Control II Jumper circuit packs (NT6M65AA and NTM609AB) Procedure 5-1 Replacing Error Control II (A5) circuit pack - part number NT6M65AA Step Description To clear any alarms on the active processor. At the maintenance terminal, enter: >RSERR ACT 00 (cr) Alarms will clear if there are no faults.
  • Page 53 Error Control II and Error Control II Jumper circuit packs (NT6M65AA and NTM609AB) 5-5 Procedure 5-2 Replacing Error Control II Jumper (B5) circuit pack - part number NTM609AB Step Description CAUTION Since all DPP circuit packs are static sensitive, be careful when handling them. Wear a wrist grounding strap when working with the DPP.
  • Page 54 5-6 Error Control II and Error Control II Jumper circuit packs (NT6M65AA and NTM609AB) Procedure 5-2 Replacing Error Control II Jumper (B5) circuit pack - part number NTM609AB Step Description Insert the spare Error Control II Jumper circuit pack in the B chassis (Slot 5), making sure it is fully seated.

  • Page 55: Error Control Ii Circuit Pack (A5) Options - Part Number: Nt6M65Aa

    Error Control II and Error Control II Jumper circuit packs (NT6M65AA and NTM609AB) 5-7 Procedure 5-2 Replacing Error Control II Jumper (B5) circuit pack - part number NTM609AB Step Description To clear any alarms on the active processor. At the maintenance terminal, enter: >RSERR ACT 00 (cr) Alarms will clear if there are no faults.

  • Page 56: Error Control Ii Jumper Circuit Pack (B5) Options - Part Number: Ntm609Ab

    5-8 Error Control II and Error Control II Jumper circuit packs (NT6M65AA and NTM609AB) Table 5-2 Error control II jumper circuit pack (B5) options - part number: NTM609AB Device type Position/setting Function Setting (number) Factory On-site Jumper None Used Strap None Used DIP Switch None Used...
  • Page 57 Error Control II and Error Control II Jumper circuit packs (NT6M65AA and NTM609AB) 5-9 Figure 3-1 Error Control II (A5) circuit pack (NT6M65AA) options DPP Hardware Component Replacement Guide DPP001 and up...
  • Page 58 5-10 Error Control II and Error Control II Jumper circuit packs (NT6M65AA and NTM609AB) Figure 3-1 Error Control II Jumper (B5) circuit pack (NTM609AB) options Note: LED (DS1) lights when toggle switch (SW1) is moved to the (up) On position. 297-1001-539 Standard 01.03 September 2000...

  • Page 59: Quad Sio Circuit Pack (Nt6M60Xx)

    Quad SIO circuit pack (NT6M60xx) General description Located in slot 6 of each chassis, the Quad Serial Input/Output QSIO) has one port for maintenance terminal communications, one port for polling call record data if 56K polling feature is unequipped, and two ports for the I/O controllers for serial communication with the DMS-100 (MAP).

  • Page 60: Replacing Qsio Circuit Pack

    6-2 Quad SIO circuit pack (NT6M60xx) The settings on each SIO channel baud rate selector switch correspond to different baud rates. These rates differ for synchronous and asynchronous ports. Since the SIO channels have both synchronous and asynchronous ports, the baud rates corresponding to the switch settings are not the same for all SIO baud switches.
  • Page 61 Quad SIO circuit pack (NT6M60xx) 6-3 Procedure 6-1 Replacing QSIO circuit pack (NT6M60AA or NT6M60BA) - slot 6 Step Description Place the processor unit with the suspected faulty pack in the standby mode, by putting the other processor in the ONLY mode. The other processor is defined as that processor that does not have the suspected faulty pack.
  • Page 62 6-4 Quad SIO circuit pack (NT6M60xx) Procedure 6-1 Replacing QSIO circuit pack (NT6M60AA or NT6M60BA) - slot 6 Step Description To clear any alarms on the standby processor, enter the following at the maintenance terminal: >RSERR STDBY 00 (cr) Alarms will clear on the standby processor if there are no faults. To place the active processor unit in PRIME mode, perform the following steps at the Switch and Status Panel of the DPP: a.
  • Page 63 Quad SIO circuit pack (NT6M60xx) 6-5 Procedure 6-1 Replacing QSIO circuit pack (NT6M60AA or NT6M60BA) - slot 6 Step Description Verify replacement circuit pack has corrected original error. When all maintenance activities are complete, be sure to replace the front panel of the DPP.

  • Page 64: Qsio Circuit Pack (A6 And B6) Options - Part Number: Nt6M60Aa

    6-6 Quad SIO circuit pack (NT6M60xx) Table 6-1 QSIO circuit pack (A6 and B6) options - part number: NT6M60AA Device type Position/setting Function Setting (number) Factory On-site Jumper +12 V dc, if BR1941 Must be chip is used. the same No +12 V dc if WD1943 as the chip is used.
  • Page 65 Quad SIO circuit pack (NT6M60xx) 6-7 Table 6-1 QSIO circuit pack (A6 and B6) options - part number: NT6M60AA Device type Position/setting Function Setting (number) Factory On-site Position Address Select the logical Must be Switch address of the SIO the same (S1) circuits.
  • Page 66 6-8 Quad SIO circuit pack (NT6M60xx) Table 6-1 QSIO circuit pack (A6 and B6) options - part number: NT6M60AA Device type Position/setting Function Setting (number) Factory On-site Rotary 1800 IOC Link (MMI Link to Switch 75/1200 2000 DMS-100) (Asynchro- (2400 (S5) 2400 nous...
  • Page 67 Quad SIO circuit pack (NT6M60xx) 6-9 Figure 3-1 QSIO circuit pack (NT6M60AA) options - slot 6 Jumper A Note: This circuit pack does not support polling on digital data lines; use for an analog network only. DPP Hardware Component Replacement Guide DPP001 and up...
  • Page 68 6-10 Quad SIO circuit pack (NT6M60xx) Figure 3-1 QSIO (A6 and B6) circuit pack (NT6M60AA) baud rate selector switches QSIO printed circuit assembly SW6 Printer Port (ROVER or EAT) (Typically not used) SW7 MMI Link SW5 MMI Link SW4 Polling Modem Note: SW4 (polling modem) is inactive if 56K polling is used.

  • Page 69: Qsio Circuit Pack (A6 And B6) Options - Part Number: Nt6M60Ba

    Quad SIO circuit pack (NT6M60xx) 6-11 Table 6-2 QSIO circuit pack (A6 and B6) options - part number: NT6M60BA Device type Position/setting Function Setting (number) Factory On-site Jumper Transmit internal Channel A transmit (J2) Transmit external clock Jumper ASYNC Channel A receive (J3) SYNC clock...
  • Page 70 6-12 Quad SIO circuit pack (NT6M60xx) Table 6-2 QSIO circuit pack (A6 and B6) options - part number: NT6M60BA Device type Position/setting Function Setting (number) Factory On-site 1 On channel A select NOT USED. Switch Off (normal setting) (S6) 2 On channel B select Off (normal setting) 3 On channel C select Off (normal setting)
  • Page 71 Quad SIO circuit pack (NT6M60xx) 6-13 Table 6-2 QSIO circuit pack (A6 and B6) options - part number: NT6M60BA Device type Position/setting Function Setting (number) Factory On-site Rotary 1800 MMI Link Switch 75/1200 2000 (2400 (S3) 2400 (Asynchronous chan- baud) 134.5 3600 nel;...
  • Page 72 6-14 Quad SIO circuit pack (NT6M60xx) Table 6-2 QSIO circuit pack (A6 and B6) options - part number: NT6M60BA Device type Position/setting Function Setting (number) Factory On-site Position Address Select the logical Must be Switch address of the SIO the same (S1) circuits.
  • Page 73 Quad SIO circuit pack (NT6M60xx) 6-15 Figure 3-1 Quad SIO (A6 and B6) circuit pack (NT6M60BA) options J5 J4 Note: This circuit pack supports polling on digital data lines or on an analog network. DPP Hardware Component Replacement Guide DPP001 and up...
  • Page 74 6-16 Quad SIO circuit pack (NT6M60xx) Figure 3-1 Quad SIO (A6 and B6) circuit pack (NT6M60BA) baud rate selector switches Quad SIO printed circuit assembly in slots A1A1A6 and A1A2A6 S5 printer port (ROVER or EAT) S4 MMI link 2 S3 MMI link 1 S2 BX.25 polling link Note:...
  • Page 75 Quad SIO circuit pack (NT6M60xx) 6-17 Figure 3-1 Quad SIO (A6 and B6) circuit pack (NT6M60BA) peripheral switches and indicators Quad SIO Card Transfer Select Switch Channel 4 Channel 3 Channel 2 Channel 1 Channel 4 LED Channel 3 LED Channel 2 LED Channel 1 LED SWITCH S8 CHANNEL POSITIONS...

  • Page 77: Interface Circuit Pack (Nt6M94Xx) - Turbo Only

    56K Interface circuit pack (NT6M94xx) - Turbo only General description The 56K Interface circuit pack in slot 7 provides a dual serial communication interface function for the DPP. This circuit pack uses a Serial Communication Controller (SCC) chip which lets the DPP transmit and receive serial data at various standard software selectable programmed rates from 1200-9600 bps on channel A and 56K bps on channel B.

  • Page 78: Replacing The 56K Interface Circuit Pack

    7-2 56K Interface circuit pack (NT6M94xx) - Turbo only additional backplane wiring and capable of virtually simultaneous access from either port without using WAIT states. • Host (main CPU side) interface to support fully asynchronous access based on 4 mHz timing of standard Z80 bus cycle without wait states. •...
  • Page 79 56K Interface circuit pack (NT6M94xx) - Turbo only 7-3 Procedure 7-1 Replacing the 56K Interface circuit pack - slot 7: part numbers NT6M94AA and NT6M94BA Step Description CAUTION Since all DPP circuit packs are static sensitive, be careful when handling them. Wear a wrist grounding strap when working with the DPP.
  • Page 80 7-4 56K Interface circuit pack (NT6M94xx) - Turbo only Procedure 7-1 Replacing the 56K Interface circuit pack - slot 7: part numbers NT6M94AA and NT6M94BA Step Description Remove power from the standby chassis (A or B; the one with the suspected fault) by operation of the +8 V dc red rocker switch on the power supply.
  • Page 81 56K Interface circuit pack (NT6M94xx) - Turbo only 7-5 Procedure 7-1 Replacing the 56K Interface circuit pack - slot 7: part numbers NT6M94AA and NT6M94BA Step Description Place the active processor unit in PRIME mode. At the Switch and Status Panel of the DPP: a.
  • Page 82 7-6 56K Interface circuit pack (NT6M94xx) - Turbo only Procedure 7-1 Replacing the 56K Interface circuit pack - slot 7: part numbers NT6M94AA and NT6M94BA Step Description Switch Processors to make the standby processor active. Enter: (at the terminal) >SWACT (cr) The standby processor becomes the active processor.

  • Page 83: 56K Interface Circuit Pack (A7 And B7) Options - Part Numbers: Nt6M94Aa And Nt6M94Ba

    56K Interface circuit pack (NT6M94xx) - Turbo only 7-7 Table 7-1 56K interface circuit pack (A7 and B7) options - part numbers: NT6M94AA and NT6M94BA Device type Position/setting Function Setting (number) Factory On-site Jumper Out = select card 1 Card 1 or 2 address se- (P2) In = select card 2 lection...
  • Page 84 7-8 56K Interface circuit pack (NT6M94xx) - Turbo only Figure 3-1 56K Interface (A7 and B7) circuit pack (NT6M94AA and NT6M94BA) options 297-1001-539 Standard 01.03 September 2000...

  • Page 85: High Performance Disk Interface Circuit Pack (Nt6M66Xx)

    High Performance Disk Interface circuit pack (NT6M66xx) General description The High Performance (H.P.) Disk Interface circuit pack, in slot 11 of the A and B chassis, is a smart circuit assembly, with its own Z80 microprocessor, EPROM, local RAM, and dual-ported RAM. It is a peripheral of the microprocessor on the main CPU at slot 1.

  • Page 86: Replacing The H.p. Disk Interface Circuit Pack

    8-2 High Performance Disk Interface circuit pack (NT6M66xx) Replacing the H.P. Disk Interface circuit pack To replace the H.P. Disk Interface circuit pack, use the following procedure. Procedure 8-1 Replacing H.P. Disk Interface circuit pack (NT6M66AC, NT6M66AH or NT6M66AL) - slot 11 Step Description CAUTION...
  • Page 87 High Performance Disk Interface circuit pack (NT6M66xx) 8-3 Procedure 8-1 Replacing H.P. Disk Interface circuit pack (NT6M66AC, NT6M66AH or NT6M66AL) - slot 11 Step Description Note: This will create an alarm. Remove power from the standby DPP chassis by operation of the +8 V dc red rocker switch on the power supply.
  • Page 88 8-4 High Performance Disk Interface circuit pack (NT6M66xx) Procedure 8-1 Replacing H.P. Disk Interface circuit pack (NT6M66AC, NT6M66AH or NT6M66AL) - slot 11 Step Description To place the active processor unit in PRIME mode, perform the following steps at the Switch and Status Panel of the DPP: a.

  • Page 89: Disk Interface Circuit Pack (A11 And B11) Options - Part Number: Nt6M66Ac And/Or Nt6M66Al; 72-Mbyte And 140-Mbyte Disk Drives

    High Performance Disk Interface circuit pack (NT6M66xx) 8-5 Table 8-1 Disk interface circuit pack (A11 and B11) options - part number: NT6M66AC and/or NT6M66AL; 72-Mbyte and 140-Mbyte disk drives Device type Position/setting Function Setting (number) Factory On-site Jumper None used Enable disk port interrupt Watchdog timer reset Strap...
  • Page 90 8-6 High Performance Disk Interface circuit pack (NT6M66xx) Figure 3-1 Disk Interface circuit pack (NT6M66AC, NT6M66AH, and NT6M66AL) options - slot 11 Jumper “R” Jumper “A” 297-1001-539 Standard 01.03 September 2000...

  • Page 91: Scsi Circuit Pack (Nt6M66Xx) - Turbo Only

    SCSI circuit pack (NT6M66xx) - Turbo only General description The Small Computer System Interface (SCSI) Interface circuit pack, in slot 11 of the A and B chassis of a Turbo DPP system, is a smart circuit assembly with its own 64180 microprocessor, EPROM, local RAM, and dual-ported RAM.
  • Page 92 9-2 SCSI circuit pack (NT6M66xx) - Turbo only when the clock is high, while SCSI side accesses occur during the second half of each T state when the clock is low). • NCR 5386 SCSI Bus Controller running at 10 mHz. Cycle-Steal DMA yields approximately 0.4 Mbytes per second across the SCSI bus (only on NT6M66BA or NT6M66BD cards).

  • Page 93: Replacing The Scsi Circuit Pack

    SCSI circuit pack (NT6M66xx) - Turbo only 9-3 Replacing the SCSI circuit pack To replace the SCSI circuit pack, use the following procedure. Procedure 9-1 Replacing SCSI circuit pack (NT6M66BA, NT6M66BD or NT6M66CA) - slot 11 Step Description CAUTION Since all DPP circuit packs are static sensitive, be careful when handling them. Wear a wrist grounding strap when working with the DPP.
  • Page 94 9-4 SCSI circuit pack (NT6M66xx) - Turbo only Procedure 9-1 Replacing SCSI circuit pack (NT6M66BA, NT6M66BD or NT6M66CA) - slot 11 Step Description Note: This will create an alarm. Enter the following commands to write the value 00 in the DRAM memory address 2204 for the off-line DSI cards: >DOS S DSIMAINT MEMWRITE 1 2204 00 (cr) >DOS S DSIMAINT MEMWRITE 2 2204 00 (cr)
  • Page 95 SCSI circuit pack (NT6M66xx) - Turbo only 9-5 Procedure 9-1 Replacing SCSI circuit pack (NT6M66BA, NT6M66BD or NT6M66CA) - slot 11 Step Description To clear any alarms on the standby processor, enter the following at the maintenance terminal: >RSERR STDBY 00 (cr) Alarms will clear on the standby processor if there are no faults.
  • Page 96 9-6 SCSI circuit pack (NT6M66xx) - Turbo only Procedure 9-1 Replacing SCSI circuit pack (NT6M66BA, NT6M66BD or NT6M66CA) - slot 11 Step Description Verify replacement circuit pack has corrected original error. When all maintenance activities are complete, be sure to replace the front panel of the DPP.

  • Page 97: Scsi Circuit Pack (A11 And B11) Options - Part Number: Nt6M66Ba; 380-Mbyte Disk Drives With 56K Polling And 760-Mbyte Disk Drives And Nt6M66Bd; No

    SCSI circuit pack (NT6M66xx) - Turbo only 9-7 Table 9-1 SCSI circuit pack (A11 and B11) options - part number: NT6M66BA; 380-Mbyte disk drives with 56K polling and 760-Mbyte Disk Drives and NT6M66BD; no longer supported Device type Position/setting Function Setting (number) Factory...
  • Page 98 9-8 SCSI circuit pack (NT6M66xx) - Turbo only Figure 3-1 SCSI circuit pack (NT6M66BA; 380-Mbyte disk drives with 56K polling and 760-Mbyte disk drives and NT6M66BD; no longer supported) options - slot 11 297-1001-539 Standard 01.03 September 2000...

  • Page 99: Scsi Circuit Pack (A11 And B11) Options - Part Number: Nt6M66Ca; 1- And 2-Gbyte

    SCSI circuit pack (NT6M66xx) - Turbo only 9-9 Table 9-2 SCSI circuit pack (A11 and B11) options - part number: NT6M66CA; 1- and 2-Gbyte disk drives Device type Position/setting Function Setting (number) Factory On-site Jumper None used Strap None used DIP Switch None used Rotary Switch...
  • Page 100 9-10 SCSI circuit pack (NT6M66xx) - Turbo only Figure 3-1 SCSI circuit pack (NT6M66CA; 1- and 2-Gbyte disk drives) options - slot 11 297-1001-539 Standard 01.03 September 2000...

  • Page 101: Data Stream Interface Circuit Pack (Nt6M70Xx)

    10-1 Data Stream Interface circuit pack (NT6M70xx) General description The DPP application eliminates the Magnetic Tape Drives (MTDs) used with the DMS-100 to collect AMA. Data Stream Interface (DSI) circuit packs (slots 12 and 13 in the A and B chassis) in the DPP replace the MTDs. The DSI packs are smart circuit assemblies, each with its own Z80 micropro- cessors, EPROM resident software programs, and RAM.
  • Page 102 10-2 Data Stream Interface circuit pack (NT6M70xx) Procedure 10-1 Replacing DSI circuit pack (NT6M70AA, NT6M70CF or NT6M70AC) - slots 12 and 13 Step Description CAUTION Since all DPP circuit packs are static sensitive, be careful when handling them. Wear a wrist grounding strap when working with the DPP. WARNING Since the DPP is powered up during this procedure, observe all safety procedures for operations on live equipment.
  • Page 103 Data Stream Interface circuit pack (NT6M70xx) 10-3 Procedure 10-1 Replacing DSI circuit pack (NT6M70AA, NT6M70CF or NT6M70AC) - slots 12 and 13 Step Description Remove power from the standby DPP chassis by operation of the +8 V dc red rocker switch on the power supply.
  • Page 104 10-4 Data Stream Interface circuit pack (NT6M70xx) Procedure 10-1 Replacing DSI circuit pack (NT6M70AA, NT6M70CF or NT6M70AC) - slots 12 and 13 Step Description To clear all alarms on the active processor, enter the following at the maintenance terminal: >RSERR ACT 00(cr) Alarms will clear if there are no faults.

  • Page 105: Dsi Circuit Packs (Slots 12 And 13) Options - Part Number: Nt6M70Aa And

    Data Stream Interface circuit pack (NT6M70xx) 10-5 Table 10-1 DSI circuit packs (slots 12 and 13) options - part number: NT6M70AA and NT6M70CF Device type Position/setting Function Setting (number) Factory On-site Strap None used DIP Switch Must be the Slot 12 1 = On same as the (S1)
  • Page 106 10-6 Data Stream Interface circuit pack (NT6M70xx) Figure 3-1 DSI (slots 12 and 13) circuit packs (NT6M70AA and NT6M70CF) options 297-1001-539 Standard 01.03 September 2000...

  • Page 107: Dsi Circuit Packs (Slots 12 And 13) Options - Part Number: Nt6M70Ac

    Data Stream Interface circuit pack (NT6M70xx) 10-7 Table 10-2 DSI circuit packs (slots 12 and 13) options - part number: NT6M70AC Device type Position/setting Function Setting (number) Factory On-site Strap x = strap to center post U42 and U41 Chip type; strap to use A B C D E F G H with: 2732A...
  • Page 108 10-8 Data Stream Interface circuit pack (NT6M70xx) Table 10-2 DSI circuit packs (slots 12 and 13) options - part number: NT6M70AC Device type Position/setting Function Setting (number) Factory On-site DIP Switch (X = On) Must be the Slot 13 (S1) 1 2 3 4 5 6 7 8 Select: same as...
  • Page 109 Data Stream Interface circuit pack (NT6M70xx) 10-9 Figure 3-1 Data stream interface (A12, B12, A13, and B13) circuit packs (NT6M70AC) options DPP Hardware Component Replacement Guide DPP001 and up...

  • Page 111: Bus Terminator Circuit Pack (Nt6M68Aa)

    11-1 Bus terminator circuit pack (NT6M68AA) General description The bus terminator circuit pack, in slot 14 of the A and B chassis, contains a power regulator. This regulator provides circuitry to terminate the end of the bus which prevents ringing (oscillation) of signals on the bus. See Table 11-1 for the option settings on this circuit pack.
  • Page 112 11-2 Bus terminator circuit pack (NT6M68AA) Procedure 11-1 Replacing Bus Terminator circuit pack (NT6M68AA) - version numbers G12 or earlier (e.g., D09 or E12) Step Description CAUTION Since all DPP circuit packs are static sensitive, be careful when handling them. Wear a wrist grounding strap when working with the DPP.
  • Page 113 Bus terminator circuit pack (NT6M68AA) 11-3 Procedure 11-1 Replacing Bus Terminator circuit pack (NT6M68AA) - version numbers G12 or earlier (e.g., D09 or E12) Step Description Place the processor unit with the suspected faulty pack in the standby mode, by putting the other processor in the ONLY mode.
  • Page 114 11-4 Bus terminator circuit pack (NT6M68AA) Procedure 11-1 Replacing Bus Terminator circuit pack (NT6M68AA) - version numbers G12 or earlier (e.g., D09 or E12) Step Description Insert the two screws to hold the cable shield in place. Do not overtighten. Reinsert the DSI circuit packs (slots 12 and 13) and the Disk/SCSI Interface circuit pack (slot 11).
  • Page 115 Bus terminator circuit pack (NT6M68AA) 11-5 Procedure 11-1 Replacing Bus Terminator circuit pack (NT6M68AA) - version numbers G12 or earlier (e.g., D09 or E12) Step Description WARNING This should not be done at a high traffic period, it may cause a loss of AMA. Verify replacement circuit pack has corrected original error.
  • Page 116 11-6 Bus terminator circuit pack (NT6M68AA) Procedure 11-2 Replacing Bus Terminator circuit pack (NT6M68AA) - version numbers H01 or later Step Description CAUTION Since all DPP circuit packs are static sensitive, be careful when handling them. Wear a wrist grounding strap when working with the DPP. WARNING Since the DPP is powered up during this procedure, observe all safety procedures for operations on live equipment.
  • Page 117 Bus terminator circuit pack (NT6M68AA) 11-7 Procedure 11-2 Replacing Bus Terminator circuit pack (NT6M68AA) - version numbers H01 or later Step Description Place the processor unit with the suspected faulty pack in the standby mode, by putting the other processor in the ONLY mode. The other processor is defined as that processor that does not have the suspected faulty pack.
  • Page 118 11-8 Bus terminator circuit pack (NT6M68AA) Procedure 11-2 Replacing Bus Terminator circuit pack (NT6M68AA) - version numbers H01 or later Step Description Put faulty pack in the empty electrostatic bag. Fold the DSI cables back into position along the outer wall of the chassis. Remount the ribbon cable shield over the DSI cables.
  • Page 119 Bus terminator circuit pack (NT6M68AA) 11-9 Procedure 11-2 Replacing Bus Terminator circuit pack (NT6M68AA) - version numbers H01 or later Step Description To clear all alarms on the active processor, enter the following at the maintenance terminal: >RSERR ACT 00(cr) Alarms will clear if there are no faults.

  • Page 120: Bus Terminator Circuit Pack (Slot 14) Options - Part Number: Nt6M68Aa

    11-10 Bus terminator circuit pack (NT6M68AA) Table 11-1 Bus Terminator circuit pack (slot 14) options - part number: NT6M68AA Device type Position/setting Function Setting (number) Factory On-site Strap None used None used DIP Switch Rotary Switch None used Switch None used Jumper None used Note: There are no customer-definable options on this circuit packs.

  • Page 121: Power And Alarm Communications Circuit Pack (Nt6M84Xx)

    12-1 Power and Alarm Communications circuit pack (NT6M84xx) General description The Power and Alarm communications (P/A Comm) circuit pack, located at the rear of the A chassis in position 16, performs a multipurpose function. It provides communications between the Quad SIO circuit pack and various peripherals.

  • Page 122: Replacing P/A Comm Circuit Pack

    12-2 Power and Alarm Communications circuit pack (NT6M84xx) produce a 60 Hz signal. This signal drives a transistor, providing extra drive capability for sending to the CTC on the CPU circuit pack. The P/A Comm pack contains up to eight serial channels; only four are used. These four are configured as a 2-input, 1-output switch.
  • Page 123 Power and Alarm Communications circuit pack (NT6M84xx) 12-3 Procedure 12-1 Replacing the P/A Comm circuit pack (NT6M84AA or NT6M84BA) Step Description Remove the power from the circuit pack first by disconnecting (P11) located in the upper right quadrant. Remove the other cables. Note: Verify the cable markings (identification) or attach labels to the cables when removing them to facilitate replacement in the correct positions.
  • Page 124 12-4 Power and Alarm Communications circuit pack (NT6M84xx) Procedure 12-1 Replacing the P/A Comm circuit pack (NT6M84AA or NT6M84BA) Step Description To clear any alarms on the active processor. At the maintenance terminal, enter: >RSERR ACT 00 (cr) Alarms will clear if there are no faults. To clear any alarms on the standby processor.
  • Page 125 Power and Alarm Communications circuit pack (NT6M84xx) 12-5 Figure 3-1 P/A Comm (A16) circuit pack (NT6M64AA; release 01-06) options • Notes: 1. This circuit pack does not support digital data lines; use for an analog network only. polling on 2. There are no customer-definable options on this circuit pack. Information is shown for reference only. Use this data for verification during initial DPP system installation and/or circuit pack replacement to make sure the replacement circuit pack is set up the same as the circuit pack being replaced.

  • Page 126: P/A Comm Circuit Pack (A16) Options - Part Number: Nt6M84Aa

    12-6 Power and Alarm Communications circuit pack (NT6M84xx) Table 12-1 P/A Comm circuit pack (A16) options - part number: NT6M84AA (release 01-06) Device type Position/setting Function Setting (number) Factory On-site Jumper None Used Strap None Used DIP Switch None Used Rotary Switch None Used Switch...
  • Page 127 Power and Alarm Communications circuit pack (NT6M84xx) 12-7 Figure 3-1 Power and alarm communications (A16) circuit pack (NT6M84AA; release 07 and NT6M84BA) options • Notes: 1. The NT6M84AA, release 07, does not support polling on digital data lines; use for an analog network only. 2.
  • Page 128 12-8 Power and Alarm Communications circuit pack (NT6M84xx) Table 12-2 Power and alarm communications circuit pack (A16) options - part number: NT6M84AA (release 07) Device type Position/setting Function Setting (number) Factory On-site Jumper 1-2ASEL Control Crossover Control Must be (J14) Select - Control the the same 2-3CPUSEL Control...
  • Page 129 Power and Alarm Communications circuit pack (NT6M84xx) 12-9 Table 12-2 Power and alarm communications circuit pack (A16) options - part number: NT6M84AA (release 07) Device type Position/setting Function Setting (number) Factory On-site Strap None used Chan. Int/ SW1-SW2 Switch Setting (S1) SW1-1, 5 Off With SW2, transmit...
  • Page 130 12-10 Power and Alarm Communications circuit pack (NT6M84xx) Table 12-3 Power and alarm communications circuit pack (A16) options - part number: NT6M84BA Device type Position/setting Function Setting (number) Factory On-site Jumper 1-2ASEL Control Crossover Control Must be (J14) Select - Control the the same 2-3CPUSEL Control leads from the Error...
  • Page 131 Power and Alarm Communications circuit pack (NT6M84xx) 12-11 Table 12-3 Power and alarm communications circuit pack (A16) options - part number: NT6M84BA Device type Position/setting Function Setting (number) Factory On-site Strap None used Sheet 2 of 4 DPP Hardware Component Replacement Guide DPP001 and up...
  • Page 132 12-12 Power and Alarm Communications circuit pack (NT6M84xx) Table 12-3 Power and alarm communications circuit pack (A16) options - part number: NT6M84BA Device type Position/setting Function Setting (number) Factory On-site Chan. Int/ S1-S2 Switch Setting (S1) S1-1, 5 Off With S2, transmit clock S1-1, 5 On selection, (internal or external)
  • Page 133 Power and Alarm Communications circuit pack (NT6M84xx) 12-13 Table 12-3 Power and alarm communications circuit pack (A16) options - part number: NT6M84BA Device type Position/setting Function Setting (number) Factory On-site Chan. Int/ S1-S2 Switch Setting (S2) S2-1, 5 Off (External clock is S2-1, 5 On derived by looping around the TCIn...

  • Page 135: Disk Crossover And Disk Controller Circuit Packs (Nt6M72Xx And 680-9143)

    13-1 Disk Crossover and Disk Controller circuit packs (NT6M72xx and 680-9143) General description The Disk Crossover (Xovr) circuit packs provide the data and control paths between the Disk Interface circuit pack in the card rack and the disk drives for Non-Turbo DPP systems.
  • Page 136 13-2 Disk Crossover and Disk Controller circuit packs (NT6M72xx and 680-9143) Procedure 13-1 Replacing the Disk XOVR circuit pack (NT6M72AC, NT6M72AD or NT6M72AE) Step Description CAUTION Since all DPP circuit packs are static sensitive, be careful when handling them. Wear a wrist grounding strap when working with the DPP.
  • Page 137 Disk Crossover and Disk Controller circuit packs (NT6M72xx and 680-9143) 13-3 Procedure 13-1 Replacing the Disk XOVR circuit pack (NT6M72AC, NT6M72AD or NT6M72AE) Step Description Place the DPP into an ONLY processor mode. The processor mode should match the disk mode.
  • Page 138 13-4 Disk Crossover and Disk Controller circuit packs (NT6M72xx and 680-9143) Procedure 13-1 Replacing the Disk XOVR circuit pack (NT6M72AC, NT6M72AD or NT6M72AE) Step Description Mount the replacement assembly in the vacated position. Note: When replacing the screws, align carefully before tightening to avoid stripping. Tighten the screws, alternating until all are equally tight.
  • Page 139 Disk Crossover and Disk Controller circuit packs (NT6M72xx and 680-9143) 13-5 Procedure 13-1 Replacing the Disk XOVR circuit pack (NT6M72AC, NT6M72AD or NT6M72AE) Step Description Reattach any cables removed in step 7 in reverse order. Note: Verify the cable markings (identification) or attach labels to the cables for correct positioning. WARNING Incorrect positioning of jumper may cause loss of AMA.
  • Page 140 13-6 Disk Crossover and Disk Controller circuit packs (NT6M72xx and 680-9143) Procedure 13-1 Replacing the Disk XOVR circuit pack (NT6M72AC, NT6M72AD or NT6M72AE) Step Description Replace the rear panel. Reinstall the slotted pan head screws previously removed in step 4. Note: Align carefully before tightening to avoid stripping.
  • Page 141 Disk Crossover and Disk Controller circuit packs (NT6M72xx and 680-9143) 13-7 Figure 3-1 Disk II Crossover (A15 and B15) circuit pack (NT6M72AC, NT6M72AD, and NT6M72AE; 72-, 140- and 380-Mbyte disk drives for Non-Turbo DPPs Jumper J5 Power Connector DPP Hardware Component Replacement Guide DPP001 and up...
  • Page 142 13-8 Disk Crossover and Disk Controller circuit packs (NT6M72xx and 680-9143) Table 13-1 Disk II crossover circuit pack (A15 and B15) options - part number: NT6M72AC, NT6M72AD, and NT6M72AE; 72-, 140, and 380-Mbyte disk drives for Non-Turbo DPPs Device type Position/setting Function Setting...

  • Page 143: Disk Controller Circuit Pack

    Disk Crossover and Disk Controller circuit packs (NT6M72xx and 680-9143) 13-9 Disk controller circuit pack Located directly on top of the 72-Mbyte and 140-Mbyte disk drives, this circuit pack provides data management and data control for Winchester-type disk drives. The disk controller circuit pack uses as its host interface the industry standard 8-bit, parallel, bidirectional SCSI bus.
  • Page 144 13-10 Disk Crossover and Disk Controller circuit packs (NT6M72xx and 680-9143) Figure 3-1 Disk Controller (A21A1 and B21A1) circuit pack (680-9143) options SEQUENCER BUFFER Z8 MICROPROCESSOR EPROM ENC/DEC/VCO SECTOR SIZE OPTIONAL NOT USED W5, W6, W7 W3, W8 297-1001-539 Standard 01.03 September 2000...
  • Page 145 Disk Crossover and Disk Controller circuit packs (NT6M72xx and 680-9143) 13-11 Table 13-2 Disk Controller circuit pack (A21A1 and B21A1) options - part number: 680-9143 Device type Position/setting Function Setting (number) Factory On-site Jumper State Pri. SCSI Controller ID. De- Must be (W0) shorted;...

  • Page 147: Scsi Crossover Circuit Pack (Nt6M93Xx) - Turbo Only

    14-1 SCSI Crossover circuit pack (NT6M93xx) - Turbo only General description The SCSI Crossover (Xovr) circuit packs are located at positions A15 and B15 on the inner portion of the hinged card panel at the rear of the A and B chassis.

  • Page 148: Replacing Scsi Crossover Circuit Pack

    14-2 SCSI Crossover circuit pack (NT6M93xx) - Turbo only Replacing SCSI Crossover circuit pack To replace the SCSI Crossover circuit pack, use the following procedure. Procedure 14-1 Replacing the SCSI XOVR circuit pack (NT6M93AA or NT6M93BA) Step Description CAUTION Since all DPP circuit packs are static sensitive, be careful when handling them. Wear a wrist grounding strap when working with the DPP.
  • Page 149 SCSI Crossover circuit pack (NT6M93xx) - Turbo only 14-3 Procedure 14-1 Replacing the SCSI XOVR circuit pack (NT6M93AA or NT6M93BA) Step Description Place the DPP into an ONLY processor mode. The processor mode should match the disk mode. At the Switch and Status Panel of the DPP: a.
  • Page 150 14-4 SCSI Crossover circuit pack (NT6M93xx) - Turbo only Procedure 14-1 Replacing the SCSI XOVR circuit pack (NT6M93AA or NT6M93BA) Step Description Mount the replacement assembly in the vacated position. Note: When replacing the screws, align carefully before tightening to avoid stripping. Tighten the screws, alternating until all are equally tight.
  • Page 151 SCSI Crossover circuit pack (NT6M93xx) - Turbo only 14-5 Procedure 14-1 Replacing the SCSI XOVR circuit pack (NT6M93AA or NT6M93BA) Step Description Replace the rear panel. Reinstall the slotted pan head screws previously removed in step 4. Note: Align carefully before tightening to avoid stripping. Tighten the screws, alternating until all are equally tight.

  • Page 152: Turbo Dpps

    14-6 SCSI Crossover circuit pack (NT6M93xx) - Turbo only Figure 3-1 SCSI Crossover (A15 and B15) circuit pack (NT6M93AA; 380- and 760-Mbyte disk drives for Turbo DPPs) options 297-1001-539 Standard 01.03 September 2000...

  • Page 153: Scsi Crossover (A15 And B15) Circuit Pack (Nt6M93Ba; 1- And 2-Gigabyte Disk Drives For Turbo Dpps) Options

    SCSI Crossover circuit pack (NT6M93xx) - Turbo only 14-7 Figure 3-1 SCSI Crossover (A15 and B15) circuit pack (NT6M93BA; 1- and 2-Gigabyte disk drives for Turbo DPPs) options DPP Hardware Component Replacement Guide DPP001 and up...
  • Page 154 14-8 SCSI Crossover circuit pack (NT6M93xx) - Turbo only Table 14-1 SCSI crossover circuit pack (A15 and B15) options - part number: NT6M93AA, (380- and 760-Mbyte disk drives); NT6M93BA, (1- and 2-Gigabyte disk drives) Device type Position/setting Function Setting (number) Factory On-site Jumper...

  • Page 155: Crossover Circuit Pack (Nt6M48Aa) - Turbo Only

    15-1 56K Crossover circuit pack (NT6M48AA) - Turbo only General description The 56K Crossover (XOVR) circuit pack provides the following capabilities • Interface between the DPP system backplane (56K Interface circuit pack at A7 and B7) and 56K Connector circuit pack. •...
  • Page 156 15-2 56K Crossover circuit pack (NT6M48AA) - Turbo only Procedure 15-1 Replacing the 56K XOVR circuit pack (NT6M48AA) Step Description CAUTION Since all DPP circuit packs are static sensitive, be careful when handling them. Wear a wrist grounding strap when working with the DPP. WARNING Since the DPP is powered up during this procedure, observe all safety procedures for operations on live equipment.
  • Page 157 56K Crossover circuit pack (NT6M48AA) - Turbo only 15-3 Procedure 15-1 Replacing the 56K XOVR circuit pack (NT6M48AA) Step Description Reattach any cables removed in step 4 in reverse order. Note: Verify the cable markings (identification) or attach labels to the cables for correct positioning. WARNING Incorrect positioning of cables will cause alarms and polling problems.
  • Page 158 15-4 56K Crossover circuit pack (NT6M48AA) - Turbo only Procedure 15-1 Replacing the 56K XOVR circuit pack (NT6M48AA) Step Description Display all active alarms. Enter: (at the terminal) >ERRMAP ALARMS (cr) If active alarms are present, troubleshoot using the DPP maintenance manual and/or contact the next level of support.

  • Page 159: 56K Crossover (B16) Circuit Pack (Nt6M48Aa) Options

    56K Crossover circuit pack (NT6M48AA) - Turbo only 15-5 Figure 3-1 56K Crossover (B16) circuit pack (NT6M48AA) options ♦ ♦ ♦ ♦ ♦ ♦ NT6M48_ _ REL 56K XOVR ♦ ♦ ♦ Power Connector ♦ ♦ ♦ ♦ DPP Hardware Component Replacement Guide DPP001 and up...
  • Page 160 15-6 56K Crossover circuit pack (NT6M48AA) - Turbo only Table 15-1 56K crossover circuit pack (B16) options - part number: NT6M48AA Device type Position/setting Function Setting (number) Factory On-site Jumper None Used Strap None Used DIP Switch None Used Rotary Switch None Used Switch None Used...

  • Page 161: Four-Channel Communication Circuit Pack (Nt6M85Aa)

    16-1 Four-Channel Communication circuit pack (NT6M85AA) General description The Four-Channel Communication (Comm) circuit pack provides the physical interface between the DPP’s serial communication channels and external devices. It is located on the Connector Mounting panel on the right side of the upper chassis, as viewed from the front. This pack supports four serial channels.
  • Page 162 16-2 Four-Channel Communication circuit pack (NT6M85AA) Procedure 16-1 Replacing the Four-Channel Comm circuit pack (NT6M85AA) Step Description CAUTION Since all DPP circuit packs are static sensitive, be careful when handling them. Wear a wrist grounding strap when working with the DPP. WARNING Since the DPP is powered up during this procedure, observe all safety procedures for operations on live equipment.
  • Page 163 Four-Channel Communication circuit pack (NT6M85AA) 16-3 Procedure 16-1 Replacing the Four-Channel Comm circuit pack (NT6M85AA) Step Description Gently remove the Four-Channel Comm circuit pack from its position. Verify the options on the pack. Insert the replacement pack in the vacated position. Replace the eight standoffs removed in step 7.

  • Page 164: Four-Channel Communications (A17) Circuit Pack (Nt6M85Aa) Options

    16-4 Four-Channel Communication circuit pack (NT6M85AA) Figure 3-1 Four-Channel Communications (A17) circuit pack (NT6M85AA) options Notes: 1. When used with digital data lines, make sure this pack is release 03 or later. 2. Jumpers J6, J7, J8, J9, and J10 may be on the reverse side of some printed circuit assemblies.
  • Page 165 Four-Channel Communication circuit pack (NT6M85AA) 16-5 Table 16-1 Four-Channel Communications circuit pack (A17) options - part number: NT6M85AA Device type Position/setting Function Setting (number) Factory On-site Jumper ADU Operation Must be (J6) same as No ADU operation factory (EIA on chan 1 & 2) setting.

  • Page 167: Connector Circuit Pack (Nt6M49Aa) - Turbo Only

    17-1 56K Connector circuit pack (NT6M49AA) - Turbo only General description The 56K Connector circuit is used with the Turbo feature. This circuit pack supports four serial channels, ports J11 through J14 on the right side of the DPP chassis, when viewed from the front. It provides pin-out connection between a single 50-pin ribbon cable and four DB-25 connectors.
  • Page 168 17-2 56K Connector circuit pack (NT6M49AA) - Turbo only Procedure 17-1 Replacing the 56K Connector circuit pack (NT6M49AA) Step Description CAUTION Since all DPP circuit packs are static sensitive, be careful when handling them. Wear a wrist grounding strap when working with the DPP. WARNING Since the DPP is powered up during this procedure, observe all safety procedures for operations on live equipment.
  • Page 169 56K Connector circuit pack (NT6M49AA) - Turbo only 17-3 Procedure 17-1 Replacing the 56K Connector circuit pack (NT6M49AA) Step Description Insert the replacement pack in the vacated position. Replace the eight standoffs removed in step 7. Do not fully tighten down the standoffs until all of them are inserted.
  • Page 170 17-4 56K Connector circuit pack (NT6M49AA) - Turbo only Figure 3-1 56K Connector panel assembly (B26) circuit pack (NT6M49AA) options 297-1001-539 Standard 01.03 September 2000...

  • Page 171: Power Supply (Nt6M71Ab)

    18-1 Power Supply (NT6M71AB) Powering down DPP for maintenance Powering down the DPP for maintenance is divided into two categories: • +8.5 V dc power down • -48 V dc power down. +8.5 V dc power down, removal, or maintenance of circuit packs requires removing the +8.5 V dc output from the DPP power supply.

  • Page 172: Dpp System Fuses

    18-2 Power Supply (NT6M71AB) Figure 3-1 DPP Power Supply Assembly 8.5V Retainer Screw Leave the disk drives untouched for at least 30 seconds after power down since vibration during power down may damage the disk drive. DPP system fuses DPP fuses are located on the front panel of the DPP power supply. The power supply has the -48 V dc circuit fused.

  • Page 173: Replacing Power Supply For Maintenance

    Power Supply (NT6M71AB) 18-3 blown. To replace, pull the blown fuse straight out from the fuse holder and insert the new fuse of the same type and rating. A clear fuse cover is furnished for covering the fuse as a safety precaution. After performing fuse replacement, remember to install the cover.
  • Page 174 18-4 Power Supply (NT6M71AB) Procedure 18-1 Power supply (NT6M71AB) replacement Step Description CAUTION Since all DPP circuit packs are static sensitive, be careful when handling them. Wear a wrist grounding strap when working with the DPP. WARNING Since the DPP is powered up during this procedure, observe all safety procedures for operations on live equipment.
  • Page 175 Power Supply (NT6M71AB) 18-5 Procedure 18-1 Power supply (NT6M71AB) replacement Step Description Put the disk into an Only mode. Enter: (at the terminal) >DISK MODE xx (cr) where: xx = disk mode = AO = A ONLY (if you are changing out the B power supply). = BO = B ONLY (if you are changing out the A power supply).
  • Page 176 18-6 Power Supply (NT6M71AB) Procedure 18-1 Power supply (NT6M71AB) replacement Step Description Install the replacement power supply. Make sure all cables and connectors are out of the way of the insertion path. Make sure the proper fuses are installed in the replacement power supply.
  • Page 177 Power Supply (NT6M71AB) 18-7 Procedure 18-1 Power supply (NT6M71AB) replacement Step Description Make the disk system redundant. At the maintenance terminal, enter: >DISK MODE xx (cr) where: xx = disk mode = AP = A PRIME (if mode is A only) = BP = B PRIME (if mode is B only) The DPP will begin a disk copy, this may take several hours, depending on how much data is stored and the capacity of the disks.
  • Page 178 18-8 Power Supply (NT6M71AB) For information on power and ground requirements for the DPP, refer to the Appendix - DPP Power and Ground Requirements section in this document. 297-1001-539 Standard 01.03 December 2000...
  • Page 179 19-1 Disk Drive (NT6M72xx) 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. Verify the status of the disk drives by entering the DISK MODE (cr) key sequence at the maintenance terminal.
  • Page 180 Changes B disk to uninitialized. Only used during maintenance procedures. 1 This change is to be used for specific DISK FULL recovery procedures only. Contact Nortel if it becomes necessary to use this mode change. 297-1001-539 Standard 01.03 December 2000...
  • Page 181 Disk Drive (NT6M72xx) 19-3 Removing the Faulty Disk Drive Procedure 19-1 Remove Disk Drive (NT6M72AA, NT6M72BA, NT6M72DA, NT6M72DD, NT6M72EA, NT6M72GA, and NT6M72HA) Step Description Note: The following procedure is for replacing the A disk drive; use the same procedure for replacing the B disk drive by transposing references to A and B disks.
  • Page 182 19-4 Disk Drive (NT6M72xx) Procedure 19-1 Remove Disk Drive (NT6M72AA, NT6M72BA, NT6M72DA, NT6M72DD, NT6M72EA, NT6M72GA, and NT6M72HA) Step Description For the side that is operating in an ONLY disk mode, make sure that the other processor is active. The other processor is defined as that processor that does NOT have the failing disk drive in its chassis.
  • Page 183 Disk Drive (NT6M72xx) 19-5 Procedure 19-1 Remove Disk Drive (NT6M72AA, NT6M72BA, NT6M72DA, NT6M72DD, NT6M72EA, NT6M72GA, and NT6M72HA) Step Description Disconnect the ribbon cable from J1; use the cables pull tab. Note the direction of the brown stripe on the cable (PIN 1). Remove the disk from the chassis.

  • Page 184: Location Of J1 On Disk Drive

    19-6 Disk Drive (NT6M72xx) Figure 3-1 Location of J1 on disk drive a. 72-Mbyte and 140-Mbyte disk drives Rear b. 380-Mbyte and 760-Mbyte disk drives Rear c. 1-Gbyte and 2-Gbyte disk drives 297-1001-539 Standard 01.03 December 2000...
  • Page 185 Disk Drive (NT6M72xx) 19-7 Installing the Replacement Disk Drive IMPORTANT WARNING: If changing the B disk in a TURBO DPP or a 380 MB NON-TURBO DPP, set the options correctly on the disk drive. Incorrect option settings will cause the disk to fail. Table 19-2 Option settings to configure disk drives (A or B) Disk...
  • Page 186 19-8 Disk Drive (NT6M72xx) Procedure 19-2 Install Replacement Disk Drive (NT6M72AA, NT6M72BA, NT6M72DA, NT6M72DD, NT6M72EA, NT6M72GA, and NT6M72HA) Step Description Keeping the disk drive level, slide it into position far enough to reconnect the ribbon cable at connector J1. Connect the ribbon cable to J1. WARNING The disk drive cannot operate if this cable is reversed.
  • Page 187 Disk Drive (NT6M72xx) 19-9 Procedure 19-2 Install Replacement Disk Drive (NT6M72AA, NT6M72BA, NT6M72DA, NT6M72DD, NT6M72EA, NT6M72GA, and NT6M72HA) Step Description Make the disk system redundant by changing the ONLY disk mode to PRIME disk mode. This step is used for 380 MB Non-Turbo and 380 MB, 760 MB, 1 GB and 2 GB Turbo disk drives.
  • Page 188 19-10 Disk Drive (NT6M72xx) Procedure 19-2 Install Replacement Disk Drive (NT6M72AA, NT6M72BA, NT6M72DA, NT6M72DD, NT6M72EA, NT6M72GA, and NT6M72HA) Step Description Enter: (at the terminal) >DISK INIT 1x (cr) where: x = A or B Proper response: INIT COMPLETE If the response is NO DISK PARAMETERS, go to step 14. Enter in the defective track(s) from the disk manufacturer's defect (bad track) list.
  • Page 189 Disk Drive (NT6M72xx) 19-11 Procedure 19-2 Install Replacement Disk Drive (NT6M72AA, NT6M72BA, NT6M72DA, NT6M72DD, NT6M72EA, NT6M72GA, and NT6M72HA) Step Description Note: If the response indicates either the HEAD or CYLINDER is out of range, the BAD TRACKS counter will not be incremented and the value entered is not needed for this application. Continue entering HEAD and CYLINDER numbers until the end of the disk manufacturer’s bad track map is reached.
  • Page 190 19-12 Disk Drive (NT6M72xx) Procedure 19-2 Install Replacement Disk Drive (NT6M72AA, NT6M72BA, NT6M72DA, NT6M72DD, NT6M72EA, NT6M72GA, and NT6M72HA) Step Description 380 MB Non-Turbo Disk Reinitialization This command is to be used when the DPPs response to the DISK MODE xx command is DISK NOT INITIALIZED.
  • Page 191 Disk Drive (NT6M72xx) 19-13 Procedure 19-2 Install Replacement Disk Drive (NT6M72AA, NT6M72BA, NT6M72DA, NT6M72DD, NT6M72EA, NT6M72GA, and NT6M72HA) Step Description Enter: (at the terminal) >DISK FORMAT x (cr) where: x = A for newly replaced disk A = B for newly replaced disk B Proper response: DISK FORMAT STARTED The format should take about 15-20 minutes.
  • Page 193 20-1 List of terms Alternating Current Automatic Message Accounting An automatic recording system that documents all of the necessary billing data of subscriber-dialed long distance. BELLCORE Bell Communications Research A group responsible for coordinating Bell Operating Company projects and setting standards for the industry. BX.25 Bellcore X.25 A Bellcore defined version of the X.25 communications protocol.
  • Page 194 20-2 List of terms AMA data from the DIRP, formats the data, stores the data on its own internal disk and transmits the data to a data collection center when polled by the collection center. The DPP performs the AMA Transmitter (AMAT) functions independently of the DMS-100, thereby off-loading the AMAT functions from the DMS-100 Central Control Complex (CC) DRAM...
  • Page 195 List of terms 20-3 Input/Output Controller Input/Output Equipment Maintenance and Administrative Position A group of components that provide a human-machine interface between OTC personnel and the DMS-100 Family. A MAP consists of Visual Display Unit, voice communications module, testing facilities and MAP furniture. Manufacture Discontinued Indicates a product that is no longer in production, but is currently in use in the field.
  • Page 196 20-4 List of terms Serial Input/Output Circuitry in the DPP that passes data from the DPP to external devices. The DPP employs four such circuits in its Quad SIO PCA that provides communications paths between the DPP and DMS-100/DPP maintenance interface, the DPP Emergency Administrative Terminal (EAT), and the remote polling center link.
  • Page 197 21-1 Appendix - DPP power and ground requirements DC power requirements The DPP system receives dc power from the CO dc power system. Minimum operating voltage is -44 Vdc; maximum is -56 Vdc, although to operate properly, the DPP suffers no damage if a temporary low voltage condition occurs.

  • Page 198: Dpp Power And Alarm Bulkhead Connectors (Sheet 1 Of 3)

    21-2 Appendix - DPP power and ground requirements Figure 3-1 DPP power and alarm bulkhead connectors (sheet 1 of 3) (D-Connector Chassis) DC INPUT POWER ALARMS Note: Connector J18 may not be present on some D-Connector DPP chassis; if present, no internal connections are made to this connector.

  • Page 199: Dpp Power And Alarm Bulkhead Connectors (Sheet 2 Of 3)

    Appendix - DPP power and ground requirements 21-3 Figure 3-1 DPP power and alarm bulkhead connectors (sheet 2 of 3) CHASSIS ASSY A CALM. COM SCAN PT 0 LOOP DETECT CALM. NO SCAN PT 0 MJALMCOM SCAN PT 1 DEDICATED LOOP DETECT MJALMNO SCAN PT 1...

  • Page 200: Dpp Power And Alarm Bulkhead Connectors (Sheet 3 Of 3)

    21-4 Appendix - DPP power and ground requirements Figure 3-1 DPP power and alarm bulkhead connectors (sheet 3 of 3) CHASSIS ASSY B TALM.COM BRABS TALM.NO CONVFAIL TO FRAME SUPV PANEL LVSENSOR CONVFAIL -48V(A) TO FSP BATRTN(A) FRAMEGND TO FRAME GND 1/4 in.

  • Page 201: Turbo Dpps

    Appendix - DPP power and ground requirements 21-5 In the event of ac power failure, the system automatically switches to an internally powered dc clock. An information message is output to the terminal, as shown by: >> KEY “ACR” ON AC RECV. << Note 1: This message is not valid for Turbo DPP systems and Non- Turbo DPP systems equipped with 1-Gigabyte disk drives.

  • Page 202: Dpp System Grounding Interface To Central Office Grounding System

    21-6 Appendix - DPP power and ground requirements Figure 3-1 DPP system grounding interface to central office grounding system NO. 14 AWG WIRE TO VERTICAL LOGIC BUS NO. 14 AWG WIRE TO HORIZONTAL FRAME GROUND BAR 12V AUX + CHAS - 8KHZ CLOCK +12 FR LG...
  • Page 203 Appendix - DPP power and ground requirements 21-7 Table 1-1 DPP power and alarm bulkhead connector wiring Signal Chassis Conn. Pin desig. Signal Description type type desig. (number) name The following information is for the A Chassis Ground - (LG) LOGIC Logic ground for DPP;...
  • Page 204 21-8 Appendix - DPP power and ground requirements Table 1-1 DPP power and alarm bulkhead connector wiring Signal Chassis Conn. Pin desig. Signal Description type type desig. (number) name Alarm CRIT NO CRITICAL ALARM: open ANY CRITICAL ALARM: connected to pin 1 Alarm MAJOR MAJ COM...
  • Page 205 Appendix - DPP power and ground requirements 21-9 Table 1-1 DPP power and alarm bulkhead connector wiring Signal Chassis Conn. Pin desig. Signal Description type type desig. (number) name Alarm (12) No connection Alarm D-Conn CRITICAL CRIT COM Center (common) pin of contact set controlled by Critical Alarm relay Alarm...
  • Page 206 21-10 Appendix - DPP power and ground requirements Table 1-1 DPP power and alarm bulkhead connector wiring Signal Chassis Conn. Pin desig. Signal Description type type desig. (number) name Alarm D-Conn TEMP TEMP TEMP WITHIN ACCEPTABLE LIMITS: open TEMP OUT OF RANGE: connected to pin 7 Alarm D-Conn...
  • Page 207 Appendix - DPP power and ground requirements 21-11 Table 1-1 DPP power and alarm bulkhead connector wiring Signal Chassis Conn. Pin desig. Signal Description type type desig. (number) name Alarm D-Conn POWER PWR ALM NO LOW VOLTAGE (14) CONDITION: connected to pin 9 LOW VOLTAGE IN EITHER CHASSIS: open...
  • Page 208 21-12 Appendix - DPP power and ground requirements Table 1-1 DPP power and alarm bulkhead connector wiring Signal Chassis Conn. Pin desig. Signal Description type type desig. (number) name Power D-Conn No connection Power D-Conn No connection Power D-Conn No connection Power D-Conn No connection...
  • Page 209 Appendix - DPP power and ground requirements 21-13 Table 1-1 DPP power and alarm bulkhead connector wiring Signal Chassis Conn. Pin desig. Signal Description type type desig. (number) name Alarm No connection Alarm No connection Alarm TEMP TEMP ALM Center (common) pin of contact set controlled by temp alarm relay Alarm...
  • Page 210 21-14 Appendix - DPP power and ground requirements Table 1-1 DPP power and alarm bulkhead connector wiring Signal Chassis Conn. Pin desig. Signal Description type type desig. (number) name Alarm D-Conn No connection Alarm D-Conn No connection Alarm D-Conn No connection Alarm D-Conn TEMP...
  • Page 211 Appendix - DPP power and ground requirements 21-15 Table 1-1 DPP power and alarm bulkhead connector wiring Signal Chassis Conn. Pin desig. Signal Description type type desig. (number) name Alarm D-Conn No connection (14) Alarm D-Conn FUSE FUSE ALM -48 Vdc FUSE INTACT: (15) open -48 Vdc FUSE BLOWN:...
  • Page 214 Except as expressly authorized in writing by Nortel Networks, the holder is granted no rights to use the information contained herein. Information is subject to change without notice. Nortel Networks reserves the right to make changes in design or components as progress in engineering and manufacturing may warrant.

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