Tools Featured in this Teardown

This teardown is not a repair guide. To repair your Cisco 878 Integrated Services Router, use our service manual.

Image 1/3: '''During 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!''' Image 2/3: Make sure that the power switch is turned to standby and that the power supply cable is disconnected. Disconnect all cables from the router back panel. Image 3/3: Use the Phillips #1 Screwdriver to remove the two screws on back side of the device.
  • Only trained and qualified personnel should be allowed to install, replace, or service this equipment!

  • During 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!

  • Make sure that the power switch is turned to standby and that the power supply cable is disconnected. Disconnect all cables from the router back panel.

  • Use the Phillips #1 Screwdriver to remove the two screws on back side of the device.

Add Comment

Image 1/3: 2. Lift it up top cover from the bottom of the router. Image 2/3: 3. Remove top cover from the device. Image 3/3: Place the router bottom on an antistatic mat.
  • 1. Gently push the top cover of the router away from you.

  • 2. Lift it up top cover from the bottom of the router.

  • 3. Remove top cover from the device.

  • Place the router bottom on an antistatic mat.

Add Comment

Image 1/2: Image 2/2:
  • Use the Phillips #1 Screwdriver to remove the three screws on front side of the device.

Add Comment

Image 1/3: 2. Remove inner metal shield from the device (see the anchors on the picture). Image 2/3: Be careful and do not distort the plates! Image 3/3: Be careful and do not distort the plates!
  • 1. Gently lift up inner metal shield from the bottom of the router.

  • 2. Remove inner metal shield from the device (see the anchors on the picture).

    • Be careful and do not distort the plates!

Add Comment

Image 1/3: 2. Firmly pull the release lever away from the module until the module pops up. Image 2/3: 3. You can then remove the module from the module slot. Image 3/3: 3. You can then remove the module from the module slot.
  • 1. Place your fingers on the levers at the two sides of the slot, and push open.

  • 2. Firmly pull the release lever away from the module until the module pops up.

  • 3. You can then remove the module from the module slot.

Add Comment

Image 1/1: 2. Use the Phillips #1 Screwdriver to remove the silver screw as shown on picture.
  • 1. Use the Phillips #1 Screwdriver to remove the black screw.

  • 2. Use the Phillips #1 Screwdriver to remove the silver screw as shown on picture.

  • You should remove just only one silver screw - the second one is holding just cooling plate.

Add Comment

Image 1/3: Be careful and don't damage 4-pin connector (marked RED). Image 2/3: Be careful and don't damage 4-pin connector (marked RED). Image 3/3: Be careful and don't damage 4-pin connector (marked RED).
  • Gently pull the module up to disconnect two connectors underneath.

  • Be careful and don't damage 4-pin connector (marked RED).

Add Comment

Image 1/1: When putting screws back, don't use force - threads are made of plastic!
  • Use the Phillips #1 Screwdriver to remove the two screws holding the motherboard.

  • When putting screws back, don't use force - threads are made of plastic!

Add Comment

Image 1/3: 2. Gently pull the board away from backside panel (to release metal shielding locks around connectors). Image 2/3: 3. Remove board from the case. Image 3/3: 3. Remove board from the case.
  • 1. Gently lift up the board to release plastic locks.

  • 2. Gently pull the board away from backside panel (to release metal shielding locks around connectors).

  • 3. Remove board from the case.

Add Comment

Image 1/1: Top cover
  • Parts and pieces:

    • Top cover

    • Inner metal shield cover

    • Bottom part of case with metal shielding

    • Motherboard

    • SHDSL Filter Module board

    • StrataFlash Memory Module

    • 1 black screw, 1 silver long screw (1 is still on SHDSL Filter Module board), 7 silver screws

Add Comment

Image 1/1: DRAM socket for additional RAM Memory Module
  • mini-PCI slot for WLAN card

  • DRAM socket for additional RAM Memory Module

  • Slot for additional StrataFlash Memory Module (4MB module installed)

  • Two connectors for SHDSL Filter Module board

Add Comment

Jiri Altman

Member since: 05/03/2016

636 Reputation

8 Guides authored

Team

4k20 Repair Team Member of 4k20 Repair Team

Community

6 Members

8 Guides authored

2 Comments

Sorry mate, that's not a CPU board but a SHDSL line filter. CPU is the biggest, center chip (freescale)

karmansan - Reply

Thx for info! I will update my guide accordingly...

Jiri Altman -

Add Comment

View Statistics:

Past 24 Hours: 2

Past 7 Days: 12

Past 30 Days: 144

All Time: 1,311