CyClone 2400-31 Installation instructions

The information in this document has been carefully checked and is believed to be entirely reliable. However, no
responsibility is assumed for inaccuracies. Furthermore, Cyclone Microsystems, Inc. reserves the right to make
changes to any products herein to improve reliability, function, or design. Cyclone Microsystems, Inc. neither
assumes any liability arising out of the application or use of any product or circuit described herein, nor does it
convey any license under its right or the rights of others.
Revision 1.0, March 2005
Cyclone P/N 800-2400-31
Copyright 2005 by Cyclone Microsystems, Inc.
2400-31
FRONT END PROCESSOR
MAINTENANCE &
SUPPORT GUIDE

CONTENTS
2400-31 FEP Maintenance & Support Guide i
Revision 1.0., March 2005
CHAPTER 1
1.1 INTRODUCTION..............................................................................................................................1-1
1.2 SPECIFICATIONS............................................................................................................................1-1
CHAPTER 2
2.1 PHYSICAL CONFIGURATION.........................................................................................................2-1
2.2 SWITCHES.......................................................................................................................................2-4
2.2.1 FEP Power Supply Switches...............................................................................................2-4
2.2.2 FEP Reset Switch................................................................................................................2-5
2.3 CONNECTORS................................................................................................................................2-5
2.3.1 Power Connector.................................................................................................................2-5
2.3.1.1 DC Power Connectors (600-2400-31-D0) ....................................................................2-5
2.3.1.2 AC Power Connectors (600-2400-31-A0) ....................................................................2-6
2.3.1.3 Ground Studs ...............................................................................................................2-6
2.3.2 CPCI-821 Console Connector.............................................................................................2-7
2.3.3 Ethernet Port Connector......................................................................................................2-7
2.3.4 E1 Connectors.....................................................................................................................2-8
CHAPTER 3
3.1 FEP INITIALIZATION AND BUILT-IN SELF TEST ..........................................................................3-1
CHAPTER 4
4.1 PERIODIC MAINTENANCE.............................................................................................................4-1
CHAPTER 5
5.1 SERVICEABLE COMPONENTS......................................................................................................5-1
5.2 BOARD REMOVAL AND INSTALLATION.......................................................................................5-1
5.2.1 Board Removal....................................................................................................................5-1
5.2.2 Board Installation.................................................................................................................5-2
5.3 FAN TRAY REMOVAL AND INSTALLATION..................................................................................5-2
5.3.1 Fan/Filter Assembly Removal..............................................................................................5-2
5.3.2 Fan/Filter Assembly Installation...........................................................................................5-2
5.4 POWER SUPPLY REMOVAL AND INSTALLATION.......................................................................5-2
5.4.1 Power Supply Removal.......................................................................................................5-2
5.4.2 Power Supply Installation....................................................................................................5-2
CHAPTER 6
6.1 METHODOLOGY.............................................................................................................................6-1
6.2 ASSUMPTIONS ...............................................................................................................................6-1
6.3 CONFIGURATION ...........................................................................................................................6-2
6.4 RESULTS.........................................................................................................................................6-2
CHAPTER 7
7.1 OVERVIEW......................................................................................................................................7-1
7.2 HARDWARE.....................................................................................................................................7-1
7.3 SOFTWARE AND FIRMWARE........................................................................................................7-1

CONTENTS
ii 2400-31 FEP Maintenance & Support Guide
Revision 1.0., March 2005
7.4 EFFECTIVE PERIOD OF WARRANTY ...........................................................................................7-1
7.5 REPAIRED OR REPLACEMENT PRODUCT (OUT-OF-WARRANTY)...........................................7-1
7.6 SERVICE POLICY............................................................................................................................7-2
APPENDIX A
A.1 ADDITIONAL INFORMATION.........................................................................................................A-1

CONTENTS
2400-31 FEP Maintenance & Support Guide iii
Revision 1.0., March 2005
LIST OF FIGURES
Figure 1-1. FEP Part Numbering ...........................................................................................................1-1
Figure 2-1. 600-2400-31-D0 FEP Front Panel.......................................................................................2-1
Figure 2-2. 600-2400-31-A0 FEP Front Panel.......................................................................................2-2
Figure 2-3. 600-2400-31 FEP Front Panel LEDs...................................................................................2-3
Figure 2-4. DC Power Connector...........................................................................................................2-5
Figure 2-5. AC Power Connector...........................................................................................................2-6
Figure 2-6. 75ohm BNC Connector .......................................................................................................2-8
Figure 4-1. Air Filter Replacement.........................................................................................................4-1

iv 2400-31 FEP Maintenance & Support Guide
Revision 1.0., March 2005
LIST OF TABLES
Table 1-1. 600-2400-31 Specifications.................................................................................................1-2
Table 2-1. 600-2400-31-D0 FEP Front Panel Description....................................................................2-1
Table 2-2. 600-2400-31-A0 FEP Front Panel Description....................................................................2-2
Table 2-3. 600-2400-31 FEP Front Panel LED Description..................................................................2-3
Table 2-4. Ring Lugs for #10 Studs......................................................................................................2-6
Table 2-5. Console Port Connector......................................................................................................2-7
Table 2-6. Ethernet Port Connector......................................................................................................2-7
Table 2-7. E1 ATM Port 0 Connector Pin Assignments........................................................................2-8
Table 2-8. E1 ATM Port 1 Connector Pin Assignments........................................................................2-8
Table 3-1. CPCI-817 Initialization and Self Test LEDs.........................................................................3-1
Table 3-2. CPCI-821 Initialization and Self Test LEDs.........................................................................3-2
Table 4-1. Air Filter Replacement.........................................................................................................4-1
Table 5-1. CLEI Number and Barcode ................................................................................................5-1

2400-31 FEP Maintenance & Support Guide 1-1
Revision 1.0, March 2005
CHAPTER 1
PRODUCT OVERVIEW
1.1 INTRODUCTION
The 2400-31 Front End Processor is a system featuring four ATM SARs for quad E1 line interface and
two Ethernet ports. The system uses two PowerPC processors. The 2400-31 is available in AC or DC
versions and features two redundant, hot swappable power supplies. The 2400-31 system also monitors
power supply, fan status and temperature in an effort to detect and provide early alert to component
failures.
The part numbering system for the 600-2400 series of FEPs is as shown in Figure 1-1.
Figure 1-1. FEP Part Numbering
1.2 SPECIFICATIONS
Table 1-1 lists the specifications for the 2400-31 series Front End Processor. Cooling air input is on the
left side of the unit and the air exhaust is on the right side. Airflow should not be restricted; a minimum
of one inch clearance on each side is required.
600 - 2400 - 31 - _0
Quad E1 ATM Line
Interface Power Supply A- Dual AC
D- Dual DC

PRODUCT OVERVIEW
1-2 2400-31 FEP Maintenance & Support Guide
Revision 1.0, March 2005
Table 1-1. 600-2400-31 Specifications
Physical Height 5.25 inches
Width 17.5 inches
Depth 12 inches
Other 19 inch rack mountable
Weight 15 lbs
Electrical - AC version (600-2400-31-A0)
Voltage: 90 - 264 Vac
Current (Max): 3A
Power Dissipation: 205 BTU/hr.
Frequency: 47 - 63 Hz
Connector:
Ethernet ports:
Console Serial ports:
E1 ATM ports:
10/100 BaseTx RJ45
RJ11
75ohm BNC Transmit/Receive
Electrical - DC version (600-2400-31-D0)
Voltage: 36 - 72 Vdc
Current (Max): 6.5A
Power Dissipation: 205 BTU/hr.
Connector:
Ethernet ports:
Console Serial ports:
E1ATM ports:
10/100 BaseTx RJ45
RJ11
75ohm BNC Transmit/Receive
Environmental Operating Temperature 0 to 55 Degrees Celsius
Relative Humidity 0% to 95% (non-condensing)
Storage Temperature -55 to 125 Degrees Celsius
Regulatory Compliance UL1950
CUL C22.2 No. 950, CE Marking, FCC Class A
Note: This equipment has been tested and found to comply with the
limits for a Class A digital device, pursuant to Part 15 of the FCC Rules.
These limits are designed to provide reasonable protection against
harmful interference when the equipment is operated in a commercial
environment. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the
instruction manual, may cause harmful interference to radio communi-
cations. Operation of this equipment in a residential area is likely to
cause harmful interference in which case the user will be required to
correct the interference at his own expense.
Caution: Changes or modifications to this equipment not expressly
approved by the party responsible for compliance could void the user’s
authority to operate the equipment.
This digital apparatus does not exceed the Class A limits for radio noise
emissions from digital apparatus set out in the Radio Interference
Regulations of the Canadian Department of Communication.
Le present apparall numerique n’emet pas de bruits radioelectriques
depassant les limites applicables aux appareils numeriques de las
classe A prescrites dans le Reglement sur le brouillage radioelectrique
edicte par le ministere des Communications du Canada.

CONFIGURATION & CONNECTORS
2-2 2400-31 FEP Maintenance & Support Guide
Revision 1.0, March 2005
Figure 2-2. 600-2400-31-A0 FEP Front Panel
Figure 2-2 shows a front view of the FEP unit with AC power supplies. Table 2-2 identifies each item.
Table 2-2. 600-2400-31-A0 FEP Front Panel Description
No. Name
1 Power Connector A
2 FEP Power supply ON/OFF Switch A
3 Power Connector B
4 FEP Power supply ON/OFF Switch B
5 FEP Reset Switch
6 FEP Ground Lugs
7 CPCI-821
8 CPCI-817 (1)
9 CPCI-817 (2)
10 Power Supply A
11 Power Supply B
12 Fan/Filter Assembly
FRONT END PROCESSOR
2400 SERIES
BA
RESET
115V
1
0
115V
1
0
ETHERNET 1 ETHERNET 0
CPCI-821
ST1 ST0
CONSOLE
ACT IO P
PWR0 FN0
FN1 PWR1
LPX
PPX
LNK
ACT
CPCI-817
ST1 ST0
CONSOLE
ACT IO P
HOT SWAP
XMT RCV XMT
PORT1 PORT0
RCV
LNKLNK
CPCI-817
ST1 ST0
CONSOLE
ACT IO P
HOT SWAP
XMT RCV XMT
PORT1 PORT0
RCV
LNKLNK
11 10 52
12 87
4
361
9

CONFIGURATION & CONNECTORS
2400-31 FEP Maintenance & Support Guide 2-3
Revision 1.0, March 2005
Figure 2-3. 600-2400-31 FEP Front Panel LEDs
Figure 2-3 shows the FEP front panel LEDs. Table 2-3 briefly describes each item.
Table 2-3. 600-2400-31 FEP Front Panel LED Description
No. SLOT# Name Description
1 0 CPCI-821 PWR0 Turns on and remains on for power good condition of power
supply A and turns off for power failure.
2 0 CPCI-821 PWR1 Turns on and remains on for power good condition of power
supply B.
3 0 CPCI-821 FN0 Turns on and remains on for FAN0 good condition and
turns off for FAN0 failure.
4 0 CPCI-821 FN1 Turns on and remains on for FAN1 good condition and
turns off for FAN1 failure.
5 0 CPCI-821 LPX Turns on and remains on for local PCI bus running PCI-X
and turns off for local PCI bus not running PCI-X
6 0 CPCI-821 PPX Turns on and remains on for Compact PCI bus running PCI-
X and turns off for Compact PCI bus not running PCI-X.
7 0 CPCI-821 ST0 Indicates status 0 for CPCI-821 and will light And remain on
for some time after a reset or power-on and turn off.
CPCI-817
ST1 ST0
CONSOLE
ACT IOP
HOT SWAP
XMT RCV XMT
PORT1 PORT0
RCV
LNK LNK
ETHERNET 1 ETHERNET 0
CPCI-821
ST1 ST0
CONSOLE
ACT IOP
PWR0 FN0
FN1 PWR1
LPX
PPX
LNK
ACT
CPCI-817
ST1 ST0
CONSOLE
ACT IOP
HOT SWAP
XMT RCV XMT
PORT1 PORT0
RCV
LNK LNK
23 20 17
14 13
19
910
12 11
1234
67
8
5
22 16
18
15
21

CONFIGURATION & CONNECTORS
2-4 2400-31 FEP Maintenance & Support Guide
Revision 1.0, March 2005
2.2 SWITCHES
2.2.1 FEP Power Supply Switches
The 600-2400-31-D0 DC unit has a single power switch. This switch enables and disables power from
both power entries to both power supplies. The ‘1’ position indicates power supply ON and ‘0’ position
indicates power supply OFF.
8 0 CPCI-821 ST1 Indicates status 1 for CPCI-821 and will light and remain on
for some time after a reset or power-on and turn off.
9 0 CPCI-821 I0P Indicates IOP for CPCI-821 and will light for a short time
after a reset or power on and then turn off.
10 0 CPCI-821 ACT Indicates CPCI-821 activity and will blink and/or vary in
intensity as CPCI-821 performs different operations.
11 0 CPCI-821 Ethernet 0 ACT Indicates network activity for port 0 and will blink during
transmit and receive activity.
12 0 CPCI-821 Ethernet 0 LNK Indicates link integrity for Ethernet port 0 and will remain on continuously if port 0 is connected to a functional network or
Ethernet port.
13 0 CPCI-821 Ethernet 1 ACT Indicates network activity for port 1 and will blink during
transmit and receive activity.
14 0 CPCI-821 Ethernet 1 LNK Indicates link integrity for Ethernet port 1 and will remain on continuously if port 1 is connected to a functional network or
Ethernet port.
15 CPCI-817 ST0 Indicates status 0 for CPCI-817 and will light for a short time
after reset or power-on, then turn off.
16 CPCI-817 ST1 Indicates status 1 for CPCI-817 and will light for a short time
after reset or power-on and then turn off.
17 CPCI-817 ACT Indicates CPCI-817 activity and will remain on for a short
time then turn off after reset or power-on.
18 CPCI-817 IOP Indicates IOP for CPCI-817 and will light for a short time
after reset or power-on and then turn off.
19 E1 Port 0 LNK Indicates valid E1 port 0 link.
20 E1 Port 1 LNK Indicates valid E1 port 1 link.
21 CPCI-817 This will illuminate when it is permissible to extract the
CPCI-817.It also lights at power-up and during reset.
22 Power Supply A
The FEP Power Supply green ‘POWER’ LED is located on
the power supply. It illuminates when the power supply is
ON. The yellow ‘FAULT’ LED will light when the power
supply is removed or the power supply is faulty, or there is
no power supplied to the power entry module.
23 Power Supply B
The FEP Power Supply green ‘POWER’ LED is located on
the power supply. It illuminates when the power supply is
ON. The yellow ‘FAULT’ LED will light when the power
supply is removed or the power supply is faulty, or there is
no power supplied to the power entry module.

CONFIGURATION & CONNECTORS
2400-31 FEP Maintenance & Support Guide 2-5
Revision 1.0, March 2005
The 600-2400-31-A0 AC unit has two power switches, each switch associated with one of the power
entry modules. AC power switch A enables and disables power entry to power supply A and AC power
switch B enables and disables power entry to power supply B.
2.2.2 FEP Reset Switch
The FEP Reset Switch is a momentary push-button switch that resets the FEP.
2.3 CONNECTORS
2.3.1 Power Connector
There are two power supply connectors on the right hand side of the FEP.
2.3.1.1 DC Power Connectors (600-2400-31-D0)
The DC power connector is military style circular bayonet connector with the contact arrangement and
pin assignment as shown in Figure 2-4. Mating connector part numbers, backshell part numbers and
cable clamp backshell part numbers are as follows:
Figure 2-4. DC Power Connector
Manufacturer Mating Connector Backshell Cable Clamp
Backshell
ITT Cannon MS 3476 W14 4S
MS 3475 W14 4S 057-0718-002 057-0685-002
Deutsch MS 3476 W14 4S
MS 3475 W14 4S 94002-14-3014 94003-14-3014
-48 VDC
-48 VDC Return
Ground
A
DB
C

CONFIGURATION & CONNECTORS
2-6 2400-31 FEP Maintenance & Support Guide
Revision 1.0, March 2005
The DC power wiring harness to 600-2400-31-D0 should use 14 AWG wire and the color code as
follows:
2.3.1.2 AC Power Connectors (600-2400-31-A0)
The AC power connector is a 3-pin connector. See Figure 2-5.
The power Connector is a standard IEC type recessed power receptacle.
Figure 2-5. AC Power Connector
2.3.1.3 Ground Studs
There are two #10-32 threaded studs (with hex nuts, flat washers and star washers included) attached to
the chassis of the 600-2400-31-A0 and 600-2400-31-D0. Ring lugs should be used to attach chassis
ground to the ground studs. Table 2-4 shows AMP/Tyco part numbers for typical ring lugs for #10
studs.
Color Signal Contact
Red -48 VDC A
Black -48 VDC Return B
Green/Yellow Chassis ground D
Table 2-4. Ring Lugs for #10 Studs
Wire Gauge AMP/Tyco Part
14-16 AWG 320630
10-12 AWG 36161
Neutral
Live
Ground

CONFIGURATION & CONNECTORS
2400-31 FEP Maintenance & Support Guide 2-7
Revision 1.0, March 2005
2.3.2 CPCI-821 Console Connector
The CPCI-821 Console Connector is a narrow RJ11 (6 positions) phone jack. The console port is an
RS232 serial port using a simple three-wire connection (transmit data, receive data & ground). The
connector assignment is as shown in Table 2-4. Normal system operation does not require a connection
to the CPCI-821 console connector.
Diagnostic or debug activity may require connecting to the CPCI-821 console connector. A cable
connecting the console port to a standard DB25 connector is available from Cyclone Microsystems (P/N
530-2006). A terminal (or PC running a terminal emulation program) should be set up for any band up
to 115K band, 8 bits, no parity and 1 stop bit.
Table 2-5. Console Port Connector
2.3.3 Ethernet Port Connector
The Ethernet Ports Connector 10/100 Base TX is a shielded RJ45 phone jack. The pin assignments are
as shown in Table 2-6.
Table 2-6. Ethernet Port Connector
Pin Signal Description
1- N/C
2 GND Ground
3 TXD Transmit Data
4 RXD Receive Data
5- N/C
6- N/C
Pin Signal Description
1 TX+ Transmit + (output)
2 TX- Transmit - (output)
3 RX+ Receive + (input)
4- N/C
5- N/C
6 RX- Receive – (input)
7- N/C
8- N/C

CONFIGURATION & CONNECTORS
2-8 2400-31 FEP Maintenance & Support Guide
Revision 1.0, March 2005
2.3.4 E1 Connectors
Each of the two ATM E1 links uses two 75 ohm BNC connectors (refer to figure 2-6), one for transmit
and one for receive. These connectors are electrically isolated from the front panel (the shield of the
connector is not connected to chassis ground.) The shield of the connector is RING and the center
conductor is TIP.
Figure 2-6. 75ohm BNC Connector
Table 2-7. E1 ATM Port 0 Connector Pin Assignments
Table 2-8. E1 ATM Port 1 Connector Pin Assignments
Pin CPCI-817
Signal Description
2 Rx - R0 Receive Ring 0
1 Rx - T0 Receive Tip 0
2 Tx - R0 Transmit Ring 0
1 Tx - T0 Transmit Tip 0
Pin CPCI-817
Signal Description
2 Rx - R1 Receive Ring 1
1 Rx - T1 Receive Tip 1
2 Tx - R1 Transmit Ring 1
1 Tx - T1 Transmit Tip 1
Pin 1
Pin 2

2400-31 FEP Maintenance & Support Guide 3-1
Revision 1.0, March 2005
CHAPTER 3
FEP INITIALIZATION & BUILT-IN SELF TEST
3.1 FEP INITIALIZATION AND BUILT-IN SELF TEST
The CPCI-821 and CPCI-817 boards display on the IOP, ACT, STO and ST1 LEDs the status of the
boards initialization and diagnostic self test.
FEP initialization firmware illuminates various user LED patterns after completing early stages of
hardware initialization. Should the board fail to boot properly, the LED pattern will indicate the last
successfully completed stage of the board initialization sequence. The following table describes the
startup LEDs.
Table 3-1. CPCI-817 Initialization and Self Test LEDs
User LED Pattern Initialization Stage Passed
ACT Memory Initialized
ST0 Floating Point Unit Enabled
ST1 Floating Point Unit Initialized
IOP Instruction Cache Initialized
ACT & ST0 Exception Vectors Initialized
ACT & ST1 BSP Clocks Initialized
ACT & IOP MPC8240 PCI Bridge Initialized
ST0 & ST1 MPC8240 Internal Registers Initialized
ST0 & IOP PCI Device Initialization Complete
ACT & ST0 & ST1 FE Diagnostics Starting
ACT All FE Diagnostics Passed
All LEDs OFF User application downloaded, LEDs cleared.

FEP INITIALIZATION & BUILT-IN SELF TEST
3-2 2400-31 FEP Maintenance & Support Guide
Revision 1.0, March 2005
Table 3-2. CPCI-821 Initialization and Self Test LEDs
User LED Pattern Initialization Stage Passed
ACT External Bus Controller Initialized
ST0 Local Bus Priorities Set
ST1 Interrupt Controller Initialized
IOP UART Initialized
ACT & ST0 Reset Status Check Done
ACT & ST1 I2C Bus Initialized
ACT & IOP System Clocking Initialized
ST0 & ST1 System Strapping Valid
ST0 & IOP I2C Bus Reinitialized
ST1 & IOP SDRAM Initialized
ACT & ST0 & ST1 BSS Section Cleared
All LEDs OFF Breeze or user application entry

2400-31 FEP Maintenance & Support Guide 4-1
Revision 1.0, March 2005
CHAPTER 4
PERIODIC MAINTENANCE
4.1 PERIODIC MAINTENANCE
The only element of the FEP unit requiring periodic maintenance is the air filter, located on the left hand
side of the unit. The filter should be replaced or cleaned every 12 months in normal operating environ-
ments. It should be replaced more often in dusty environments.
The replacement of air filter or fan can be done without turning off the power supplies. The fan and air
filter assembly is located on the left hand side of the FEP unit. Replacement filters can be purchased
from Cyclone Microsystems, Cyclone part number 370-1303.
Table 4-1. Air Filter Replacement
Figure 4-1. Air Filter Replacement
1 Loosen the four screws retaining the Fan & Air Filter assembly.
2 Remove the Fan & Air Filter assembly.
3The air filter element slides out the narrow opening in the Fan & Air Filter
assembly.
4Slide a new air filter element into the narrow opening in the Fan & Air Filter
assembly.
5 Install the Fan & Air Filter assembly.
6 Snug the four retaining screws using a Phillips screwdriver.
Fans
The filter
slides out
this way.
Filter

2400-31 FEP Maintenance & Support Guide 5-1
Revision 1.0, March 2005
CHAPTER 5
SERVICEABLE COMPONENTS
5.1 SERVICEABLE COMPONENTS
All of he Field Replaceable Units (FRU) of an FEP are serviceable from the front of the unit without the
need to dismount an installed FEP from its rack. Table 5-1 lists all the field replaceable units and the
associated CLEI codes and Cyclone part numbers.
Table 5-1. CLEI Number and Barcode
5.2 BOARD REMOVAL AND INSTALLATION
The CPCI-821 is not hot-swappable and should only be removed or installed with power OFF. All
cables should be disconnected from the boards during installation and removal. CPCI 817 board is hot
swappable and can be removed from the FEP when the power is ON.
5.2.1 Board Removal
FEP Boards can be damaged with electrostatic discharge. Consequently, all boards should be handled in
an environment with preventive Electro Static Discharge (ESD) measures. Specifically, boards should
only be actively handled with a ground strap and transported in an ESD shielded bag.
Turn power off. Disconnect cables from the board. Loosen the two retaining screws on the boards front
panel. The retaining screws are located on each edge of the front panel, between the ejector handles and
the end of the front panel. Eject the board by prying outward on both the ejector handles.
Cyclone Part
Number Qty Description CLEI Number ECI Code Barcode
600-2400-31-A0
600-2011 15 slot CPCI-AC: 2400 Chassis GCM2DC0CRA 436787
CM821-064-00-T3 1CPCI-810 Host Processor Board GC1PFG0BAA 117503
CM817-064-T3 2Data Link Board: 2 Port ATM-E1 GCP8PLMFAA 135437
370-1302 2AC Power supply: 2400 Chassis GCPUHT0JAA 272077
370-1300 1Fan / Filter Assembly: 2400 Chassis GCNYAANFAA 436784
370-1303 Filter (only): 2400 Chassis
600-2400-31-D0
600-2010 15 slot CPCI-DC: 2400 Chassis GCM2ED0CRA 436788
CM821-064-00-T3 1CPCI-810 Host Processor Board GC1PFG0BAA 117503
CM817-064-T3 2Data Link Board: 2 Port ATM-E1 GCP8PLMFAA 135437
370-1301 2DC Power supply: 2400 Chassis GCPUCS0JAA 272075
370-1300 1Fan / Filter Assembly: 2400 Chassis GCNYAANFAA 436784
370-1303 Filter (only): 2400 Chassis

SERVICEABLE COMPONENTS
5-2 2400-31 FEP Maintenance & Support Guide
Revision 1.0, March 2005
5.2.2 Board Installation
Insert the board into the FEP unit opening and align the printed circuit board card edge with the card
guides inside the unit. Care should be taken to insert the board horizontally (as flat as possible) so as
not to interfere with components on the board below or interfere with the underside of the board above.
Fully seat the board by pressing firmly on both ejector handles or pressing at the center of the board's
front panel.
5.3 FAN TRAY REMOVAL AND INSTALLATION
The cooling fans of the FEP are serviceable from the front of the unit. The FEP does NOT have to be
removed from its rack to service the fans.
5.3.1 Fan/Filter Assembly Removal
Follow steps 1 and 2 in Table 4-1 to remove the Fan/Filter assembly. The Fan/Filter assembly is located
on the left side of the unit as shown in Figure 4-1. The Fan/Filer assembly has a finger pull. Pull the fan
tray from the unit.
5.3.2 Fan/Filter Assembly Installation
Align the flanges in the Fan /Filter assembly with its guides after replacing the fan and slide the Fan/
Filter access panel into the unit.
5.4 POWER SUPPLY REMOVAL AND INSTALLATION
The AC power supply has 2 switches for 2 power supplies and the DC power supply has a single switch
for 2 power supplies. The power supplies of the FEP are serviceable from the front of the unit. The FEP
does NOT have to be removed from its rack to service the power supplies. The FEP will operate with
one power supply installed. Since the power supplies are hot swappable, they can be removed or
installed without switching off the power.
5.4.1 Power Supply Removal
The two power supplies of the FEP are located above the boards, at the top of the unit. To remove failed
power supply, loosen the two retaining screws, at either end of the power supply. Eject the power
supply from the FEP by prying outward on the ejector handle. Pull the power supply from the unit.
5.4.2 Power Supply Installation
With the printed circuit board of the power supply aligned with the card guides of the FEP unit, slide the
power supply into the FEP. Fully seat the power supply and tighten the retaining screws.

2400-31 FEP Maintenance & Support Guide 6-1
Revision 1.0, March 2005
CHAPTER 6
RELIABILITY PREDICTIONS
6.1 METHODOLOGY
Reliability predictions were completed using the Bellcore 5 reliability standard developed by AT&T
Bell Laboratories. Component failure rates are calculated based on technology, stress levels, gate or
transistor density (ICs), package style, and quality level. Failure rates provided by the component
manufacturer have been used in some cases, where available. Failure rates are expressed in FITs, which
is failures per billion hours. Mean Time Between Failures (MTBF) is the inverse of the failure rate and
is the average time between failures.
6.2 ASSUMPTIONS
• Ambient input air temperature does not exceed 30 deg. C.
• Ground, Fixed, Controlled Environment
• Components are Quality Level I.
• Component stress levels do not exceed rated limits (i.e. power dissipation, junction temperature,
etc.). In other words, components are used within specification limits. The parts count prediction
assumes parts are used at a maximum of 50% of rated electrical stress.
• Component failure could result in FEP failure (except for the power supplies that are configured in
parallel redundancy). However, Bellcore’s architecture uses FEPs in parallel redundancy.