Cisco 1812j Manual

							CH A P T E R
 
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7
Installing and Upgrading Internal Modules
This chapter describes how to install or upgrade modules that are located within your Cisco 1800 series 
fixed-configuration router, such as memory modules and an inline power supply card. You need to 
remove the router chassis cover to install or remove these items. This chapter contains the following 
sections:
 Safety Warnings, page 7-1
 Removing the Chassis Cover, page 7-2
 Locating Modules, page 7-3
 Installing and Removing DIMMs, page 7-4
 Installing the Optional Inline Power Supply, page 7-5
 Installing the Chassis Cover, page 7-6
 Removing and Installing CompactFlash Cards, page 7-7
All the module replacement procedures in this section require removal of the chassis cover. Before you 
perform any of the module replacement procedures, disconnect the power and remove the cover, as 
described in the 
“Removing the Chassis Cover” section on page 7-2. After you complete the module 
replacement procedures, install the chassis cover as described in the “Installing the Chassis Cover” 
section on page 7-6.
Safety Warnings
WarningDuring this procedure, wear grounding wrist straps to avoid ESD damage to the card. Do not directly 
touch the backplane with your hand or any metal tool, or you could shock yourself. Statement 93
WarningOnly trained and qualified personnel should be allowed to install, replace, or service this equipment. 
Statement 1030
WarningBefore working on a system that has an on/off switch, turn OFF the power and unplug the power cord. 
Statement 1 
						

							 
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Chapter 7      Installing and Upgrading Internal Modules
  Removing the Chassis Cover
WarningDo not work on the system or connect or disconnect cables during periods of lightning activity. 
Statement 1001
WarningRead the installation instructions before connecting the system to the power source. Statement 1004
WarningBefore working on equipment that is connected to power lines, remove jewelry (including rings, 
necklaces, and watches). Metal objects will heat up when connected to power and ground and can 
cause serious burns or weld the metal object to the terminals. Statement 43
WarningHazardous network voltages are present in WAN ports regardless of whether power to the unit is OFF 
or ON. To avoid electric shock, use caution when working near WAN ports. When detaching cables, 
detach the end away from the unit first. Statement 1026
Removing the Chassis Cover
The Cisco 1800 series fixed-configuration routers have a cover that slides off the front of the chassis. 
Follow these steps to remove the cover from a Cisco
 1800 series fixed-configuration router:
Step 1Make sure that the router is turned off and is disconnected from the power supply.
WarningBefore opening the unit, disconnect the telephone-network cables to avoid contact with 
telephone-network voltages. Statement 1041
Step 2Use a Phillips screwdriver to remove the screw that fastens the chassis cover, as shown in Figure 7-1.
Figure 7-1 Removing the Chassis Cover Screw
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Chapter 7      Installing and Upgrading Internal Modules
  Locating Modules
Step 3Insert a flat-blade screwdriver between the chassis and chassis cover at the screwdriver pry point on one 
side of the chassis, as indicated in 
Figure 7-1. Rotate the screwdriver 90 degrees to disengage the chassis 
cover from the chassis.
Step 4Repeat Step 3 on the other side of the chassis, as indicated in Figure 7-1.
Step 5Gently slide the chassis cover of the router away from the bottom of the chassis.
CautionBe sure to slide the chassis cover all the way off before you lift it off the chassis. The plastic eject button 
on the CompactFlash slot can be broken if you do not slide the chassis cover all the way off the chassis 
before you lift it off the chassis.
Step 6Place the router bottom on an antistatic mat, and begin installing modules.
Locating Modules
Figure 7-2 shows the locations of the fan, DIMM, power supply, and the holes in the system board used 
to install an inline power supply card in the Cisco 1800 series fixed-configuration routers.
Figure 7-2 Module Locations in Cisco 1800 Series Fixed-Configuration Routers
1Fan
2Power supply
3DIMM module
4Holes used for inline power supply card installation
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Chapter 7      Installing and Upgrading Internal Modules
  Installing and Removing DIMMs
Installing and Removing DIMMs
Cisco 1800 series fixed-configuration routers have 128 MB of DDR SDRAM installed on the system 
board. You can install an additional DIMM in the DIMM connector to expand system memory to a 
maximum of 384 MB.
Before you remove or install a DIMM, remove the chassis cover as described in the “Removing the 
Chassis Cover” section on page 7-2.
CautionWhen you remove or install DIMMs, always wear an ESD-preventive wrist strap, and ensure that it 
makes good contact with your skin. Connect the equipment end of the wrist strap to the metal part of the 
chassis.
CautionHandle DIMMs by the edges only. DIMMs are ESD-sensitive components and can be damaged by 
mishandling.
Removing a DIMM
Follow these steps to remove a DIMM from the system board:
Step 1Locate the DIMM on the system board. Figure 7-2 shows the location of the DIMM connector. 
Step 2Pull the latches away from the DIMM at both ends; pulling the latches away lifts the DIMM slightly. 
Now you can lift the DIMM out of the connector. See 
Figure 7-3.
Figure 7-3 Rem ov i n g a  DI MM
Step 3Place the DIMM in an antistatic bag to protect it from ESD damage.
1Release the latches2Remove the DIMM
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Chapter 7      Installing and Upgrading Internal Modules
  Installing the Optional Inline Power Supply
Installing a DIMM
Follow these steps to install a DIMM in a Cisco 1800 series fixed-configuration router:
Step 1Locate the DIMM on the system board. See Figure 7-2 for the location of the DIMM connector. 
Step 2Remove any existing DIMM by gently pulling the spring-loaded clips on the end of the socket far enough 
to clear the DIMM, and then gently pulling the DIMM up and away from the socket. See 
Figure 7-3.
Step 3Insert the DIMM into the DIMM socket, as shown in Figure 7-4.
Figure 7-4 Installing a DIMM
Step 4Firmly press the DIMM into the socket until the spring-loaded clips on the socket snap over the end of 
the DIMM.
Installing the Optional Inline Power Supply
The inline power supply option for the Cisco 1800 series fixed-configuration routers includes an inline 
power supply card that must be installed inside the router, and an external power supply. Perform the 
following steps to install the inline power supply card. See 
Figure 7-2 for the locations of connectors 
and other components within the router.
WarningVoltages that present a shock hazard may exist on Power over Ethernet (PoE) circuits if 
interconnections are made using uninsulated exposed metal contacts, conductors, or terminals. 
Avoid using such interconnection methods, unless the exposed metal parts are located within a 
restricted access location and users and service people who are authorized within the restricted 
access location are made aware of the hazard. A restricted access area can be accessed only through 
the use of a special tool, lock and key or other means of security. Statement 1072
1DIMM2Insert and rotate into socket.
2
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Chapter 7      Installing and Upgrading Internal Modules
  Installing the Chassis Cover
WarningInstallation of the equipment must comply with local and national electrical codes. Statement 1074
CautionEnsure that the inline power supply is not connected to the back of the router prior to installation of the 
inline power supply card. Failure to do so may result in damage to the inline power supply card or to the 
router.
CautionWhen installing the inline power supply card, ensure that the card is installed in the proper direction. 
Improper installation will result in damage to the inline power supply card. Installation of the inline 
power supply card requires the installation of three metal standoffs, to which the card is then secured 
using three screws. Be sure to use all three screws to ensure that the card is installed properly—if the 
card is not installed in the correct direction, the three screw holes will not match up with the three metal 
standoffs.
Step 1Find the metal standoff attachment locations on the system board, which are indicated by a star pattern 
surrounding each of the three holes in the system board.
Step 2Install the three metal standoffs into the system board in the metal standoff attachment locations 
(denoted by a star pattern around the holes). Use a 1/4-inch nut driver to tighten the standoffs.
CautionMake sure that the standoffs are straight when installed. Tighten them gently but firmly. The shoulder 
of each standoff must be seated tightly against the system board.
Step 3Place the inline power supply card on top of the three metal standoffs, lining up the metal standoffs with 
the screw holes in the inline power supply card.
Step 4Insert the screws provided in the accessory kit through the inline power supply card and into the metal 
standoffs. Carefully tighten the screws with a Phillips screwdriver.
After you install the inline power supply card in the router, install the router cover and connect the inline 
power supply to the power connector on the back of the router.
Installing the Chassis Cover
The Cisco 1800 series fixed-configuration router has a cover that slides onto the chassis from the back 
of the chassis. Follow these steps to install the chassis cover on a Cisco
 1800 series fixed-configuration 
router:
Step 1Gently slide the cover of the router onto the chassis.
Step 2Replace the cover screw that you removed when you opened the chassis. See the “Removing the Chassis 
Cover” section on page 7-2. 
						

							 
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Chapter 7      Installing and Upgrading Internal Modules
  Removing and Installing CompactFlash Cards
Removing and Installing CompactFlash Cards
This section describes how to install and replace CompactFlash cards in Cisco 1800 series 
fixed-configuration routers. It contains the following sections:
 Preventing Electrostatic Discharge Damage
 Removing a CompactFlash Memory Card
 Installing a CompactFlash Memory Card
Preventing Electrostatic Discharge Damage
CompactFlash memory cards are sensitive to electrostatic discharge (ESD) damage. ESD damage, which 
can occur when electronic cards or components are handled improperly, results in complete or 
intermittent failures.
To prevent ESD damage, follow these guidelines:
 Always use an ESD wrist strap, and ensure that it makes good skin contact.
 Connect the equipment end of the strap to an unfinished chassis surface.
 Place a removed CompactFlash memory card on an antistatic surface or in a static shielding bag. If 
the card will be returned to the factory, immediately place it in a static shielding bag.
 Avoid contact between the card and your clothing. The wrist strap protects the card from ESD 
voltages on the body only; ESD voltages on clothing can still cause damage.
 Do not remove the wrist strap until the installation is complete.
CautionFor safety, periodically check the resistance value of the antistatic strap. The measurement should be 
between 1 and 10 megohms (Mohm). 
Removing a CompactFlash Memory Card
To remove a CompactFlash memory card from the chassis, perform the following steps. See Figure 7-5.
CautionDo not remove a CompactFlash memory card from the chassis while it is being accessed. A blinking CF 
LED indicates that the CompactFlash memory is being accessed. Removing the CompactFlash memory 
card from the router while it is being accessed can damage your router.
Step 1Press the ejector button next to the CompactFlash memory card. The ejector button moves outward so 
that it projects from the panel.
Step 2Press the ejector button again. This ejects the CompactFlash memory card partway out of its slot.
Step 3Pull the CompactFlash memory card out of its slot.
Step 4Push the ejector button in until the button is flush with the bezel.
CautionTo prevent damage to the ejector mechanism, the ejector button must remain pressed all the way in (flush 
against the bezel) when it is not being used to eject a CompactFlash memory card. 
						

							 
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Chapter 7      Installing and Upgrading Internal Modules
  Removing and Installing CompactFlash Cards
Figure 7-5 CompactFlash Memory Card Slot in Cisco 1800 Series Fixed-Configuration Routers
Installing a CompactFlash Memory Card
To install a CompactFlash memory card, perform the following steps (see Figure 7-5):
Step 1Make sure that the ejector button is pressed flush with the front panel, so that it does not project beyond 
the panel.
NoteIf the ejector button is projecting beyond the panel, push it in until it is flush with the bezel.
Step 2Insert the CompactFlash memory card into the slot until it is fully seated. The ejector button remains 
flush with the panel.
NoteIf the ejector button is projecting from the panel after you insert the CompactFlash memory card, 
remove the CompactFlash memory card, press the ejector button until it clicks, and reinsert the 
CompactFlash memory card.
CautionTo prevent damage to the ejector mechanism, the ejector button must remain pressed flush against the 
front panel when it is not being used to eject a CompactFlash memory card.
1CompactFlash slot2Ejector button
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IN-1
Cisco 1800 Series Integrated Services Routers (Fixed) Hardware Installation Guide
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INDEX
Numerics
10BASE-T     1-3
802.11b/g integrated radio module     1-3, 1-5
A
AC power connection     4-1
ADSL-over-ISDN port
description
     1-3
ADSL-over-POTS port
description
     1-3
antennas
connecting to the router
     4-8
supported     1-6
autosensing feature     1-3
auxiliary port
connecting to
     4-8
description of     4-7
B
baud rate
modem
     4-8
C
cables
autosensing in router
     1-3
cables, provided     2-7
chassis
closing
     7-6 to ??
desktop installation     3-2
dimensions     1-12
grounding     3-3, 3-4
opening     7-2
wall-mounting     3-2
compliance     1-13
connections
AC power
     4-1
auxiliary port     4-8
console port     4-7
Ethernet     4-4
ISDN BRI     4-4
modem     4-8
network     4-3
console port
connecting to
     4-7
description     1-3
description of     4-7
crossover cable     1-3
D
desktop installation     3-2
dimensions, chassis     1-12
DSLAM     1-3
dying gasp feature     1-3
E
electrical safety guidelines     2-2
electrostatic discharge damage
See ESD.
error messages
     ?? to 6-3, ?? to 6-7
ESD 
						

							 
Index
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Cisco 1800 Series Integrated Services Routers (Fixed) Hardware Installation Guide
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damage prevention     2-3
ESD-preventive wrist strap     2-3
Ethernet cable types     4-4
F
Fast Ethernet WAN port
description
     1-3
feature summary (table)     1-3
G
G.SHDSL port
description
     1-3
ground connection
for Cisco 3725
     3-3
for Cisco 3745     3-4
H
high temperature, troubleshooting     6-3
humidity, specifications     1-12
I
installation
checklist
     2-5
desktop     3-2
site requirements     2-4
tools required     2-7
wall-mounting     3-2
integrated 802.11b/g radio module     1-3, 1-5
ISDN BRI
cable specifications
     4-4
ISDN S/T port
description
     1-3
L
LAN
connections
     4-2
interface types     4-4
LEDs
front panel
     6-4
rear panel     6-4
lightning safety     2-3
M
memory
compact Flash
     1-4
types     1-3
N
network connections     4-3
NVRAM     1-4
O
omnidirectional antenna     1-6
opening chassis     7-2
P
packing list     2-7
patch antenna     1-6
port
ADSL-over-ISDN
     1-3
ADSL-over-POTS     1-3
console     1-3
G.SHDSL     1-3
ISDN S/T port     1-3
power
requirements
     2-4