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Document:	DEC Network Integration Server 600
Order Number:	EK-A0571-MG
Revision:	001
Pages:	40
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DEC Network Integration Server 600
Hardware Information for Digital
Services
Order Number: EK-A0571-MG.001

This manual is intended for Digital Services engineers. It contains
hardware information for the DEC Network Integration Server 600,
including a recommended spares list and Field Replaceable Units list.

Revision/Update Information:

This is a new manual.

First printing, April 1992
The information in this document is subject to change without notice and should not be
construed as a commitment by Digital Equipment Corporation. Digital Equipment Corporation
assumes no responsibility for any errors that may appear in this document.
No responsibility is assumed for the use or reliability of software on equipment that is not
supplied by Digital Equipment Corporation or its affiliated companies.
Restricted Rights: Use, duplication, or disclosure by the U.S. Government is subject to
restrictions as set forth in subparagraph (c)(1)(ii) of the Rights in Technical Data and Computer
Software clause at DFARS 252.227-7013.
© by Digital Equipment Corporation 1992.
All Rights Reserved.
The following are trademarks of Digital Equipment Corporation: DDCMP, DEC, DECnet,
DECNIS, DECrouter, DECUS, DECvoice, DECwriter, DNA, MASSBUS, MicroVAX, Packetnet,
PDP, Q-bus, Q22-bus, RSTS, RSX, ULTRIX, UNIBUS, VAX, VAXcluster, VMS, VT, and the
DIGITAL Logo.
Kilostream is a registered trademark of British Telecommunications, plc.

This document was prepared using VAX DOCUMENT, Version 1.2

Contents
How to Use This Manual . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

vii

1 Power Module Information
1.1
1.2
1.3
1.4
1.5

Power Module Outputs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Module States . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Module Test Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Remote Sense . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Voltage Setting . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–1
1–1
1–3
1–4
1–6

2 Thermal Protection
2.1
2.1.1
2.2
2.3

Ambient Air Temperature Sensor . . . . . . . . . . . . . . . . . . . . . . . . .
How the Sensor Protects the System . . . . . . . . . . . . . . . . . . .
Ambient Air Temperature Switch . . . . . . . . . . . . . . . . . . . . . . . .
Fans . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2–1
2–1
2–2
2–2

3 Backplane Support
3.1
3.1.1
3.1.2
3.2
3.3
3.4

Bus Topology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Futurebus+ Profile B Compliance . . . . . . . . . . . . . . . . . . . . .
Futurebus+ Profile B Noncompliance . . . . . . . . . . . . . . . . . . .
System Bus Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Central Arbitration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Extension Cards . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

3–1
3–1
3–2
3–2
3–3
3–4

iii

4 System Testing and Card Information
4.1
4.1.1
4.1.2
4.1.3
4.1.4
4.2
4.3
4.3.1
4.3.2
4.4
4.5
4.6
4.7
4.8

System Self-Test . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Processor Card Module Self-Test . . . . . . . . . . . . . . . . . . . . . .
Memory Card Module Self-Test . . . . . . . . . . . . . . . . . . . . . . .
Network Interface Card Module Self-Test . . . . . . . . . . . . . . .
System Exerciser . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Self-Test Failure . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Network Interface Card Loopback Testing . . . . . . . . . . . . . . . . . .
Distribution Panel Loopback . . . . . . . . . . . . . . . . . . . . . . . . .
Ethernet LAN Card Loopback . . . . . . . . . . . . . . . . . . . . . . . .
Processor Card and Memory Card Testing . . . . . . . . . . . . . . . . . .
Installation Torques . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Card Reference Numbers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Card and Power Module Symbols . . . . . . . . . . . . . . . . . . . . . . . . .
Network Interface Card Reference Names . . . . . . . . . . . . . . . . . .

4–1
4–1
4–1
4–2
4–2
4–3
4–3
4–3
4–3
4–4
4–4
4–4
4–4
4–5

A Recommended Spares
B Field Replaceable Units
Index
Figures
1–1
1–2
1–3
2–1
3–1
4–1

Power Module LEDs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Output Test Points . . . . . . . . . . . . . . . . . . . . . . . . . . .
44-Way Edge Connector . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
FAN 1 and FAN 2 Connections . . . . . . . . . . . . . . . . . . . . . . .
Backplane Connectors . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Symbols . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–2
1–4
1–5
2–3
3–3
4–5

Tables
1–1
2–1
2–2
A–1
B–1

Output Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Thermal Protection Process . . . . . . . . . . . . . . . . . . . . . . . . . .
Ambient Air Temperature and Fan Drive Voltages . . . . . . . .
Recommended Spares . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Field Replaceable Units . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1–3
2–1
2–2
A–1
B–1

How to Use This Manual
This manual provides Digital Services engineers with information about DEC
Network Integration Server 600 (DECNIS 600) hardware components. The
information is useful as a reference, especially when problem solving or testing
the DECNIS 600.
This manual should be used as a supplement to the DEC Network Integration
Server 600 Installation and Service Manual and Network Interface Card
documents.

Structure
This manual has four chapters and two appendixes:
•

Chapter 1 contains information about the power module.

•

Chapter 2 describes DECNIS 600 components that provide thermal
protection.

•

Chapter 3 contains information about backplane support and operation of
the DECNIS 600 bus.

•

Chapter 4 describes system testing and includes information about the
processor card, memory card, and Network Interface Cards.

•

Appendix A lists recommended spares for the DECNIS 600.

•

Appendix B is a Field Replaceable Unit (FRU) list for the DECNIS 600.

vii

Product Documentation
Hardware Documentation
For information about the DECNIS 600 hardware, refer to:
•

DEC Network Integration Server 600 Installation and Service Manual
This manual shows how to install and test the DECNIS 600. It contains
problem solving procedures and describes how to remove and replace
hardware components. It is intended for customers who are trained as
service personnel.

•

DEC Network Integration Server 600 Configuration Card
This card is provided for completion by the customer. It includes system
identification information, contacts, and details of the load host(s) for the
DECNIS 600.

•

Network Interface Card Cabling Instructions and Specifications card
A Cabling Instructions and Specifications card is provided with each
Network Interface Card. It shows how to install the cables associated with
a Network Interface Card and includes product information that is specific
to the Network Interface Card.

•

Network Interface Card Problem Solving card
A problem solving card is provided with each Network Interface Card. It
contains problem solving procedures specific to the Network Interface Card.

•

Network Interface Card Configuration Card
A configuration card is provided with each Network Interface Card for
completion by the customer. The card includes information about the
Network Interface Card lines and ports.

Software Documentation
For information about the DECNIS 600 software, refer to:

viii

•

DEC Network Integration Server Introduction

•

DEC Network Integration Server Installation card

•

DEC Network Integration Server Configuration

•

DEC Network Integration Server Management

•

DEC Network Integration Server Event Messages (supplied on line)

•

DEC Network Integration Server Problem Solving (supplied on line unless
a hardcopy version is ordered)

Digital Services Documentation
Details of the DECNIS 600 and an up-to-date list of FRUs and recommended
spares can be found in:
•

Communication Options Minireference manual

•

Technical Information Management Architecture (TIMA) online database

Terminology
DECNIS 600

DEC Network Integration Server 600.

LED

Light Emitting Diode. This abbreviation is used to describe the
indicators on the DECNIS 600.

NIC

Network Interface Card.

1
Power Module Information
This chapter includes information about outputs from the power module and
describes power module states. It also identifies the power test points and
remote sensing on the backplane assembly, and specifies the power module’s
voltage range.

1.1 Power Module Outputs
There are four outputs from the power module. In powering sequence, these
are:
1. Fan output (FAN 1 and FAN 2)
2. ±12 V
3. +5.1 V
4. +2.1 V
On power down, all outputs are disabled simultaneously.

1.2 Power Module States
The three LEDs on the power module are shown in Figure 1–1. The LEDs
indicate the following:
•

OVERVOLTAGE
If LED 1 is lit, there is an overvoltage condition on one or more of the
outputs. Overvoltage protection is provided for the +5.1 V, ±12 V, and the
+2.1 V outputs:
If the +5.1 V output reaches an overvoltage condition, the power
module shuts down.
If the ±12 V or the +2.1 V reaches an overvoltage condition, that output
shuts down but all other outputs maintain nominal voltage.

Power Module Information 1–1

Figure 1–1 Power Module LEDs

FAULT symbol

OVERVOLTAGE
LED (Red)
OVERCURRENT
LED (Yellow)
MODULE OK
LED (Green)

CBN–0031–92–I

If the fan output (FAN 1 and FAN 2) reaches an overvoltage condition, LED
1 is lit but the fans do not shut down.
When any output fails due to an overvoltage condition, the DECNIS 600
must be powered off and then powered on again to resume operation.
•

OVERCURRENT
If LED 2 is lit, there is an overcurrent condition on one or more of the
outputs. Overcurrent protection is provided for all outputs:
If there is an overcurrent condition on the +5.1 V output for more than
two seconds, the power module shuts down. To resume operation, the
overcurrent condition must be removed and the system powered off and
powered on again.

1–2 Power Module Information

If there is an overcurrent condition on the ±12 V, +2.1 V, or FAN 1/FAN
2 output, only that output shuts down. When the overcurrent condition
is removed, there is no need to power off and power on the system
again; the output recovers to normal operation.
•

MODULE OK
This LED indicates that the power module is operating successfully. All
power outputs are within the limits specified in Table 1–1.

Table 1–1 Output Specifications
Parameter

Output 1

Output 2

Output 3

FAN 1/FAN 2

Nominal voltage (V)

+5.1

±12.0

+2.1

See Table 2–2.

Tolerance (V)
Minimum
Maximum

+4.98
+5.25

±11.4
±12.6

+2.06
+2.14

–

Output current (A)
Minimum
Maximum

0.00
90.0

±0.00
+8.3/–4.9

0.00
10.0

0.50
4.001

Current limit (A)
Minimum
Maximum

94.5
112.5

+8.7/–5.1
+10.4/–6.1

10.5
12.5

8.0
9.7

+8.3/–4.9

10.0

9.7

Maximum short circuit
current (Arms)
1

FAN 1/FAN 2 provides 8.00 A maximum startup current for 250 ms.

1.3 Power Module Test Points
Figure 1–2 shows the backplane assembly at the rear of the DECNIS 600 and
the power module output test points on the assembly.
Note
Take care when taking voltage measurements on the test points; the
power module has a 90 A capacity for the +5.1 V output.

Power Module Information 1–3

Figure 1–2 Power Output Test Points

GND

+ 5.1 V

GND

+ 5.1 V

GND

+ 5.1 V

2.1 V
2.1 V

2.1 V
remote
sense +

+5.1 V
remote
sense –

+5.1 V
remote
sense +

12–way
connector

2.1 V

2.1 V
RTN

2.1 V
remote
sense –
+ 12 V RTN
–

+
– 12 V RTN

+12 V

–12 V

–12 V
+ 5.1 V

GND

+ 5.1 V

GND

+ 5.1 V

GND

44–way
connector
CBN–0032–92–I

1.4 Remote Sense
Remote sense is provided for the +5.1 V and +2.1 V outputs. The remote sense
is used to detect any voltage drop over the backplane connections. If a drop
is detected, the power module can compensate to keep the outputs on the
backplane within specification.
Figure 1–2 shows the location of the +5.1 V and +2.1 V remote sense
connections on the backplane assembly. Figure 1–3 shows the location of
these connections on the 44-way edge connector.

1–4 Power Module Information

Figure 1–3 44-Way Edge Connector

44–way connector
5.1 V remote sense +

5.1 V remote sense –

2.1 V remote sense +

2.1 V remote sense –

2.1 V

2.1 V RTN

FAN 1+

FAN 1–

FAN 2+

FAN 2–

+12 V

+ –12 V RTN

+12 V

+ –12 V RTN

+12 V

+ –12 V RTN

+12 V

+ –12 V RTN

–12 V

+ –12 V RTN

–12 V

+ –12 V RTN

–12 V

No connection (+ –12 V RTN)

PWRDN

No connection (BURN–IN L)

POK

TEMPOK

DCOK

SIGNAL RTN
CBN–0033–92–I

Power Module Information 1–5

Note that on the 44-way connector, there are no connections in sockets W
and X. These are used by manufacturing for ±12 V RTN and BURN-IN L
(usually set high to +5 V). They should not be used for any other connections.

1.5 Voltage Setting
There is no voltage setting switch on the DECNIS 600 unit. The power module
can operate over an actual voltage range of 88 V to 264 V.
For more information about DECNIS 600 power specifications, refer to the
DEC Network Integration Server 600 Installation and Service Manual.

1–6 Power Module Information

2
Thermal Protection
This section describes temperature detection on the DECNIS 600 and operation
specifications for the fans.

2.1 Ambient Air Temperature Sensor
An ambient air temperature sensor is located inside the power module. This
sensor monitors the temperature of ambient air entering the power module.
If there are any problems with this sensor, the power module must be replaced.
The ambient air temperature sensor is not available as an FRU.

2.1.1 How the Sensor Protects the System
The ambient air temperature sensor protects the DECNIS 600 by activating
a warning (TEMPOK) or shutdown (PWRDN) signal when a fault condition is
detected. Table 2–1 describes how the system is protected when the TEMPOK
or PWRDN signal is activated and specifies the temperatures for warning and
shutdown.
Table 2–1 Thermal Protection Process
Temperature

Signal
Activated

Process

48°C (±3°C)
(113°F to 124°F)

TEMPOK

The processor card receives the TEMPOK signal and
logs an event message to the host management system.
It continues to log the event until the temperature falls
within the specified range.

53°C (±3°C)
(122°F to 133°F)

PWRDN

The power module shuts down (no LEDs lit) and the
processor card is notified so that it can record the
reason for shutdown.
On shutdown, there is no indication of an overtemperature problem on any of the DECNIS 600 displays.

Thermal Protection 2–1

Note that PWRDN cannot be activated by the DECNIS 600 software (for
example, NCL commands). The DECNIS 600 software cannot shut down the
unit.

2.2 Ambient Air Temperature Switch
The ambient air temperature switch is located on the lower part of the
processor card. In this position, it is able to monitor the temperature of air
flowing in through the inlet air vents underneath the unit.
If the air temperature exceeds 45°C (113°F), the processor card sends an event
message to the host management system and continues to log the event until
the temperature falls within the specified operating range.
The ambient air temperature switch is used by the processor card only. It
cannot cause the power module to shut down and its function is independent of
the ambient air temperature sensor on the DECNIS 600.

2.3 Fans
Fan speed also provides thermal protection on the DECNIS 600. When the
ambient air temperature sensor inside the power module detects a change in
temperature, fan drive voltage is increased or decreased to maintain operating
temperature. This is shown in Table 2–2.
Table 2–2 Ambient Air Temperature and Fan Drive Voltages
Minimum Voltage at
Minimum Temperature

Maximum Voltage at
Maximum Temperature

FAN 1

11.4 V (±3%) at
24°C (±3°C)
(70°F to 81°F)

24.0 V (±3%)† at
40°C (±3°C)
(99°F to 109°F)

FAN 2‡

10.6 V (±5%) at
24°C (±3°C)
(70°F to 81°F)

23.2 V (±5%) at
40°C (±3°C)
(99°F to 109°F)

Output

†The power module supplies 24 V (± 3%) maximum at 4 A output (2 A for each fan).
‡FAN 2 is connected to FAN 1 through a diode. FAN 1 is driven directly.

At temperatures below 24°C (75°F), the fans run at minimum speed and at
40°C (104°F) the fans run at maximum speed. Between these temperatures,
fan speed is varied proportionately to the ambient air temperature.

2–2 Thermal Protection

Note that FAN 2 runs slower than FAN 1 so that audible ‘beating’ of the fans
is reduced. If you change the fans, make sure that FAN 2 (marked "L") is:
•

Installed on the lefthand side of the fan tray (when viewed from the front)

•

Attached to the fan tray connector marked "L"

If you do not connect the fans correctly, it could cause unpredictable thermal
protection and may even cause system shutdown.
Figure 2–1 shows the location of FAN 1, FAN 2, and the fan tray connectors.
Figure 2–1 FAN 1 and FAN 2 Connections

L connector

R connector

FAN 2 (L)

FAN 1 (R)

CBN–0036–92–I

Thermal Protection 2–3

3
Backplane Support
This chapter describes the DECNIS 600 bus, central arbitration, and slot
allocation on the DECNIS 600.

3.1 Bus Topology
The design of the DECNIS 600 bus is based upon the Futurebus+ standard
(IEEE 896). Futurebus+ is the generic term for a suite of standards that define
design options for backplane interconnection in modular systems.
To guarantee that all Futurebus+ compliant modules can operate with
each other, the Futurebus+ standard defines profiles that set out specific
requirements for module development. The profiles specify physical
characteristics, such as board size and connectors, and define protocols
for data transfer and arbitration. The DECNIS 600 bus is based on the
Futurebus+ standard Profile B that sets out specific requirements for I/O bus
environments.

3.1.1 Futurebus+ Profile B Compliance
The DECNIS 600 complies with Futurebus+ standard Profile B in the following
ways:
•

Basic physical design (for example, card size, front panel I/O only, and
indicators)

•

Bus Transceiver Logic (BTL) circuitry for backplane drivers (incident
wave switching and reduced crosstalk problems through smaller switching
voltages)

•

Common connections on the main signal pin connector.

•

32-bit addressing and data on the modules; the DECNIS 600 backplane
supports a 64-bit bus

•

Compelled read and write transactions

•

Central arbitration (see Section 3.3)

Backplane Support 3–1

3.1.2 Futurebus+ Profile B Noncompliance
The following design features on the DECNIS 600 do not comply with the
specifications set out by Futurebus+ Profile B:
•

Design of the DECNIS 600 system bus and pin connections used to provide
thermal control and power supply logic.

•

V+/V

•

Dedicated power fail pin on the central arbitration connector.

•

3.3 V power pins are reserved but unused.

•

Only limited logical layer compliance with Profile B (no split response
transactions).

•

No compliance with the Futurebus+ register set architecture.

power rail values (±12 V, not floating 48 V).

3.2 System Bus Connectors
Dedicated signal lines are provided from the power module to the processor
card through a 16-way connector on the backplane. These signals are carried
over the system bus:
•

PWRDN

•

POK (AC)

•

DCOK

•

TEMPOK

Connectors for the system bus are only provided in slots 1, 2, and 3 (see
Figure 3–1). Therefore, the processor card can only be installed in one of these
slots.
Note that slot 3 should only be used as a temporary measure, either for
problem solving or as a workaround until a new backplane assembly or
DECNIS 600 unit is available. The protective cover on the power module
extends across slot 1 and slot 2 to prevent the processor card and the memory
card from being removed while the system is powered up. The protective cover
does not extend across slot 3.

3–2 Backplane Support

Figure 3–1 Backplane Connectors

Power connector

Bus connector

Backplane
assembly
Power connector
Central arbitration
connector
Power connector

Central arbitration
termination
connectors
System bus connector
Power connector
Slots

4–9
CBN–0037–92–I

3.3 Central Arbitration
A central arbitration controller is included on the memory card. The controller
is responsible for ensuring that for any number of requests from the cards
(each card has two request lines) there is only one grant line active on the bus.

Backplane Support 3–3

The DECNIS 600 has central arbitration termination connectors in slots 1 and
2 only (see Figure 3–1). For this reason, the memory card must be installed in
slot 1 or slot 2 and should not be installed in any of the other slots.
The system bus signals also include an arbitration controller inhibit signal.
This signal ensures that if more than one memory card is installed in the
system, only one arbitration controller is active on the bus.

3.4 Extension Cards
There are no extension cards available for the DECNIS 600 bus. The service
strategy for the DECNIS 600 is by FRU replacement.

3–4 Backplane Support

4
System Testing and Card Information
This chapter describes the module self-test and system self-test and the
interaction between cards. It includes information about installing cards and
testing cards, and explains the conventions used to identify cards.

4.1 System Self-Test
The system self-test is activated on power up. There are two parts to it:
1. The processor card, memory card, and each enabled Network Interface
Card runs an on-board module self-test (see Sections 4.1.1 to 4.1.3).
2. A system exerciser is run on the working system (see Section 4.1.4). Any
Network Interface Card that fails module self-test is not included in this
part of the testing.

4.1.1 Processor Card Module Self-Test
The module self-test on the processor card tests the following:
•

Processor

•

Memory (ROM, RAM, BBRAM, Flash RAM)

•

Logic

•

Bus interface

For more information about the LED states shown on the processor card during
module self-test, refer to the DEC Network Integration Server 600 Installation
and Service Manual.

4.1.2 Memory Card Module Self-Test
The memory card relies on the processor card to run its module self-test
because it does not have its own on-board processor.

System Testing and Card Information 4–1

The memory card waits (no LEDs lit) until the processor card has completed
and passed module self-test. Then the processor card accesses the memory
card across the bus and checks the following:
•

Interaction with the ARE (Address Recognition Engine) chip on the
memory card. The ARE chip performs trial addressing lookups and returns
data back to the processor card. The addressing data must correspond
to that held in memory on the processor card. If the addressing data is
incorrect, the memory card fails its module self-test.

•

System pool memory available on the memory card.

4.1.3 Network Interface Card Module Self-Test
The Network Interface Card module self-test checks the following:
•

Processor

•

Memory (ROM, RAM, BBRAM)

•

Bus interface

•

Access to the memory card

•

Network Interface Card I/O interface

The module self-test also runs a loopback test on the card. On most Network
Interface Cards, this is limited to internal loopback only. However, if a
loopback connector is fitted to a DEC WANcontroller 622 Network Interface
Card before module self-test, external loopback is run.

4.1.4 System Exerciser
When the processor card, memory card, and all enabled Network Interface
Cards have completed module self-test, the system exerciser is activated. The
system exerciser checks the DECNIS 600 by using as much bandwidth of the
bus as possible and loading the entire system.
The system exerciser is run in the following stages:
1. The processor card requests each Network Interface Card to boot its
primitive driver. The driver is resident in the Network Interface Card’s
ROMs.
2. The driver transmits and receives frames to and from the processor card
(no Network Interface Card to Network Interface Card transactions).
At the same time, the processor card interacts with the ARE chip on the
memory card.

4–2 System Testing and Card Information

When the system exerciser has finished, the system self-test is complete
and the READY LEDs on the processor card, memory card, and Network
Interface Cards should be lit. Refer to the DEC Network Integration Server 600
Installation and Service Manual for more information.

4.2 System Self-Test Failure
If a hardware fault is detected during system self-test, the system self-test
(upper) display on the processor card shows the value 2. The system operation
(lower) display shows the number of a slot. This indicates that the system has
attempted to isolate the problem and identifies it with a particular slot or card.
However, it is important to note that other hardware components could cause
the problem and that a wider approach to fault finding should be taken. For
example, there could be a problem with the backplane assembly and both the
slot and the card may be working correctly.

4.3 Network Interface Card Loopback Testing
The Problem Solving card for each Network Interface Card shows how to run
a separate module loopback test by attaching a loopback connector to check
the card and its port. For more information, refer to the Problem Solving card.

4.3.1 Distribution Panel Loopback
The module loopback test cannot be used to test the ports on a distribution
panel. To test a distribution panel port, the DECNIS 600 software must be
installed and loaded so that NCL can be used to perform the loopback. Refer
to the Network Interface Card’s Problem Solving card.

4.3.2 Ethernet LAN Card Loopback
Internal loopback testing on an Ethernet LAN card is automatically performed
during module self-test. External loopback testing is also activated on Ethernet
LAN cards when the system software has been loaded.
During external loopback, the card must either be connected to the network
or have a loopback connector attached to its port to pass the test. If the
loopback test fails, the ATTENTION state is shown on the card (READY and
FAULT LEDs lit) until the loopback test passes. The card continues to perform
external loopback until it passes.

System Testing and Card Information 4–3

4.4 Processor Card and Memory Card Testing
For problem solving or testing purposes, all Network Interface Cards can be
removed and the DECNIS 600 can be powered up with only the processor card
and memory card installed. On power up, system self-test is automatically
run, even though there are no Network Interface Cards available.
However, note that:
•

The processor card can only be installed in slots 1, 2, or 3 (see Section 3.2).

•

The memory card can only be installed in slots 1 and 2 (see Section 3.3).

•

Any slot that does not contain a card should be covered with a slot cover.

4.5 Installation Torques
When installing a processor card, memory card, or a Network Interface Card,
it is important not to overtighten the screws that hold the card in its slot. The
thread insert for each screw is molded separately and attached to the enclosure
frame. If you overtighten the screws, you could damage the insert.

4.6 Card Reference Numbers
The Bxxx number on a card is a spares part number used by Digital Services.
The DNSxx number on a card is a sales option number.

4.7 Card and Power Module Symbols
Figure 4–1 shows the symbols used on the cards and power module and
describes what they mean.

4–4 System Testing and Card Information

Figure 4–1 Symbols

Symbol

Description
Hotswap

This symbol identifies the HOTSWAP LED on a NIC.
‘Hotswap’ means that you can remove and replace the NIC
without powering down the system. For more information,
refer to the DEC Network Integration Server 600 Installation
and Service Manual.
NOTE: Some diagrams in the DECNIS 600 documentation
show NICs labelled with the lower symbol for ‘hotswap’.
The upper symbol is the correct symbol used on the NICs.
Fault
This symbol labels a FAULT LED. If there is more than one
FAULT LED on a card or module, the LEDs are also numbered.

Dump

This symbol identifies the the dump button on the
management processor card. For more information, refer to
the DEC Network Integration Server 600 Installation and
Service Manual.
CBN–0039–92–I

4.8 Network Interface Card Reference Names
Each Network Interface Card has a reference name printed on a label on the
front of the card. The name consists of a letter followed by three numbers. For
example, the reference name on a DEC WANcontroller 618 Network Interface
Card is W618.

System Testing and Card Information 4–5

Using W618 as an example, the following figure shows how a reference name
is constructed:

W 61 8

This letter indicates the type of
connections provided by the card.
For example:
– W for WAN
– L for LAN
– F for FDDI

This number indicates the
number of ports on the NIC.

These are reference numbers
that identify the card family and
sequence.
CBN–0038–92–I

The same reference names are also used by the DECNIS 600 software to
identify Network Interface Cards. For example, NCL can be used to return the
following information about a card:
W618-6-2

This name identifies port 2 on a DEC WANcontroller 618 installed in slot 6.
For more information, refer to the DECNIS 600 software documentation.

4–6 System Testing and Card Information

A
Recommended Spares
Table A–1 shows the recommended spares for the DECNIS 600 at the time of
printing. For a complete and current list of recommended spares, refer to the
Communication Options Minireference manual.
To order a spare part for the DECNIS 600, use the order number shown in
Table A–1.
Table A–1 Recommended Spares
Description

Order Number

Actuator (plastic thumb plate) for Network Interface Card switch

74-42368-01

Actuator retainer (plastic insert that holds thumb plate to Network
Interface Card)

74-42773-01

Blank 35 mm panel (blank panel adjacent to slot 9)

74-42407-01

Backplane assembly

70-28724-01

Enclosure
(without backplane assembly, power module, or support brackets)

70-28273-01

Enclosure with backplane assembly, power module, and support
brackets

DNSXB-AD

Fan and connector

12-23374-12

Fan retaining plate

74-42291-01

Fan tray ¼-turn screw

12-31616-02

Fan tray assembly

70-28725-01

Fan tray harness

17-02507-01

Loopback connector for V.35

12-36233-01

Loopback connector for RS422

12-26259-01

Loopback connector for RS232

12-15336-15
(continued on next page)

Recommended Spares A–1

Table A–1 (Cont.) Recommended Spares
Description

Order Number

Memory card (2 MB)

B1050-AA

Memory card (8 MB)

B1050-BA

Module slot cover

70-29501-01

Module screw

12-35749-01

Power module (110/220 V)

30-36324-01

Power module plastic front cover

70-29424-01

Power module plastic front cover screw

12-35749-01

Processor card (4 MB) with NV RAM

B1000-BA

Processor card (8 MB) with NV RAM

B1000-AA

Rear panel

74-42284-01

Rear panel thumb screw

90-09116-01

Support kit (DECNIS 600 support brackets)

70-28761-01

DEC LANcontroller 601 (1 N1 Ethernet line)
DEC LANcontroller 601 Network Interface Card

B1101-AA

Ethernet loopback connector

12-22196-01

DEC LANcontroller 602 (2 N1 Ethernet lines)
DEC LANcontroller 602 Network Interface Card–Ethernet Thinwire

B1102-BA

DEC LANcontroller 602 Network Interface Card–Ethernet Thickwire

B1103-BA

DEC LANcontroller 602 Network Interface Card–Ethernet
Unshielded Twisted Pair (UTP)

B1103-BB
(continued on next page)

A–2 Recommended Spares

Table A–1 (Cont.) Recommended Spares
Description

Order Number

DEC WANcontroller 618 (8 lines at 64K)
DEC WANcontroller 618 Network Interface Card

B1408-AA

Connecting cable (2 m)

17-02969-01

Loopback connector (50-way male)

12-35447-01

Distribution panel V.24/V.28/RS232

70-28117-02

Distribution panel V.35

70-28117-01

Distribution panel V.36/V.11/RS422

70-28117-03

BT Kilostream adapter cable for V.36/V.11/RS422 distribution panel

BC21G-02

DEC WANcontroller 622 (2 T1/E1 lines)
DEC WANcontroller 622 Network Interface Card

B1302-AA

RS422 adapter cable

17-01108-00

V.35 adapter cable

17-01112-00

X.21 (leased line only) and BT Kilostream adapter cable

17-01109-00

Loopback connector (50-way female)

12-25852-01

Recommended Spares A–3

B
Field Replaceable Units
Table B–1 shows the Field Replaceable Units (FRUs) available for the DECNIS
600 at the time of printing. For a complete and current list of FRUs, refer to
the Communication Options Minireference manual.
To order an FRU, specify the order number shown in Table B–1.
Table B–1 Field Replaceable Units
Description

Order Number

Backplane assembly

70-28724-01

Enclosure
(without backplane assembly, power module, or support brackets)

70-28273-01†

Enclosure with backplane assembly, power module, and support
brackets

DNSXB-AD†

Fan and connector

12-23374-12

Fan tray harness

17-02507-01

Memory card (2 MB)

B1050-AA

Memory card (8 MB)

B1050-BA

Power module (110/220 V)

30-36324-01

Processor card (4 MB) with NV RAM

B1000-BA

Processor card (8 MB) with NV RAM

B1000-AA

DEC LANcontroller 601 Network Interface Card
(1 NI Ethernet line)

B1101-AA

DEC LANcontroller 602 Network Interface Card
(2 NI Ethernet lines–Thinwire)

B1102-BA

†This FRU is supplied direct from manufacturing.

(continued on next page)

Field Replaceable Units B–1

Table B–1 (Cont.) Field Replaceable Units
Description

Order Number

DEC LANcontroller 602 Network Interface Card
(2 NI Ethernet lines–Thickwire)

B1103-BA

DEC LANcontroller 602 Network Interface Card
(2 NI Ethernet lines–Twisted Pair)

B1103-BB

DEC WANcontroller 618 Network Interface Card (8 lines at 64K)

B1408-AA

DEC WANcontroller 618 connecting cable (2 m)

17-02969-01

DEC WANcontroller 618 distribution panel V.24/V.28/RS232

70-28117-02

DEC WANcontroller 618 distribution panel V.35

70-28117-01

DEC WANcontroller 618 distribution panel V.36/V.11/RS422

70-28117-03

DEC WANcontroller 622 Network Interface Card (2 T1/E1 lines)

B1302-AA

B–2 Field Replaceable Units

Index
12-way connector, 1–3
44-way connector, 1–4

A
Actuator, A–1
Actuator retainer, A–1
Addressing, 3–1, 4–2
Address Recognition Engine chip
See ARE chip
Ambient air temperature sensor, 2–1
Ambient air temperature switch, 2–2
ARE chip, 4–2

D
DECNIS 600
bus, 3–1
configuration card, viii
shutdown, 2–2, 2–3
DEC WANcontroller 618, 4–5
DEC WANcontroller 622
loopback, 4–2
Distribution panel
loopback, 4–3
Dump
symbol, 4–5

Backplane
remote sense, 1–4
test points, 1–3
12-way connector, 1–3
44-way connector, 1–4
BBRAM
testing, 4–1, 4–2
Bus Transceiver Logic, 3–1

Edge connector, 1–4
Ethernet LAN card
ATTENTION state, 4–3
loopback testing, 4–3
Event messages
overtemperature, 2–2
Extension cards, 3–4

Central arbitration, 3–1, 3–3
Connectors
central arbitration, 3–4
fan, 2–3
system bus, 3–2
12-way, 1–3
44-way, 1–4
Current limit, 1–3

Fan drive voltage, 2–2
Fans, 2–2
FAN 1, 2–2
FAN 2, 2–2
installation, 2–3
location, 2–3
maximum speed, 2–2
minimum speed, 2–2

Index–1

Fans (Cont.)
output, 1–1
Fault
symbol, 4–5
Field Replaceable Units, B–1 to B–2
Flash RAM
testing, 4–1
FRU
See Field Replaceable Unit
Futurebus+
DECNIS 600 compliance, 3–1
DECNIS 600 noncompliance, 3–2
description, 3–1
Profile B, 3–1
register set architecture, 3–2

H
Hotswap
symbol, 4–5

L
LEDs
description, 1–1
MODULE OK, 1–3
OVERCURRENT, 1–2
OVERVOLTAGE, 1–1
READY, 4–3
symbols, 4–4
Light Emitting Diodes
See LEDs
Logic, 4–1
Loopback connectors, A–1
Loopback testing
distribution panel, 4–3
Ethernet LAN cards, 4–3
Network Interface Card, 4–3
using NCL, 4–3

M
Memory card
arbitration controller, 3–3
ARE chip, 4–2
LED symbols, 4–4
module self-test, 4–1
position, 3–4
screw torque, 4–4
testing, 4–4
Module loopback test, 4–3
Module self-test
memory card, 4–1
Network Interface Card, 4–2
processor card, 4–1

N
Network Interface Card
bus interface, 4–2
configuration information, viii
DEC WANcontroller 618, 4–5
DEC WANcontroller 622, 4–2
driver, 4–2
frame transaction, 4–2
I/O interface, 4–2
LED symbols, 4–4
loopback testing, 4–3
memory, 4–2
module self-test, 4–2
reference name, 4–5
request lines, 3–3
screw torque, 4–4
NIC
See Network Interface Card
Nominal voltage, 1–3

O
Output current, 1–3
Outputs
power, 1–1
Overcurrent protection, 1–2
Overtemperature
events, 2–2

Index–2

Overtemperature (Cont.)
shutdown, 2–1
specifications, 2–1
warning, 2–1
Overvoltage protection, 1–1

P
Pool memory, 4–2
Power module
cover, 3–2
LED 1, 1–1
LED 2, 1–2
LED symbols, 4–4
MODULE OK LED, 1–3
outputs, 1–1
OVERCURRENT LED, 1–2
OVERVOLTAGE LED, 1–1
PWRDN signal, 2–1
shutdown, 1–1, 1–2, 2–2
TEMPOK signal, 2–1
Power outputs
current limit, 1–3
monitoring, 1–4
nominal voltage, 1–3
output current, 1–3
short circuit current, 1–3
specifications, 1–3
test points, 1–3
tolerance, 1–3
Problem solving
approach, 4–3
Processor card
ambient air temperature switch, 2–2
bus interface, 4–1
displays, 4–3
LED symbols, 4–4
logic, 4–1
memory, 4–1
module self-test, 4–1
position, 3–2
screw torque, 4–4
testing, 4–4
Profile B, 3–1

R
RAM
testing, 4–1, 4–2
Remote sense, 1–4
ROM
testing, 4–1, 4–2

S
Screw
inserts, 4–4
torques, 4–4
Service strategy, 3–4
Short circuit current, 1–3
Signal pin connector, 3–1
Signals
DCOK, 3–2
POK, 3–2
PWRDN, 2–1, 3–2
TEMPOK, 2–1
Slot covers, 4–4
Slot problems, 4–3
Symbols, 4–4
System Exerciser, 4–2
System operation display, 4–3
System self-test
description, 4–1
fails, 4–3
System self-test display, 4–3

T
Temperature sensor
ambient air sensor, 2–1
TEMPOK, 3–2
Test points, 1–3
Tolerance, 1–3
Torques, 4–4

Index–3

V
Voltage
measuring, 1–3
operating range, 1–6
switch, 1–6

Index–4