Disassembling the ThinkPad 701C / 701CS



Disassembling the ThinkPad 701C / 701CS

This procedure provides the steps required to completely disassemble the ThinkPad 701C / 701CS.

The three (Figure 1-3) exploded views show the parts of the computer that are removed at various stages of the disassembly process. The numbered callouts in the figures correspond to steps in the procedure.

If you follow all of the steps in this procedure, you completely disassemble the ThinkPad 701C / 701CS.

However, for some replacement operations, you may not need to completely disassemble the ThinkPad 701C / 701CS. In those situations, the relative sequence of steps in this procedure is important. Some FRUs must be removed to reach the failing FRU, or to make it easier to work with another FRU.

This procedure contains instructions for the following:


1-Remove the battery, shown in figure 1


2-Remove the SO-DIMM cover and any installed SO-DIMM cards, shown in the figure 1

See 'Removing and Replacing the SO-DIMM Card'


3-Remove the PCMCIA cover and filler plug shown in figure 2 Remove any installed PCMCIA cards.

See 'Removing PCMCIA Cards'


4-Remove the parallel port cover shown in figure 1


  Do not drop or apply any shock to the hard disk drive. The hard disk drive is sensitive to physical shock. Incorrect handling can damage it and cause permanent loss of data on the hard disk. Before removing the hard disk drive, have the user make a backup copy of all the information on the hard disk. Never remove the hard disk drive while the system is operating or while it is in Suspend mode.


5-Remove the hard disk drive shown in figure 1

NOTE: Remove the hard disk drive by inserting a coin in the slot and twisting until the hard disk drive is unseated. Do not apply any extra force to the hard disk drive when removing it.


Removing the Keyboard Cover 


6-Remove the screw (BC) located on the right side toward the back of the computer, shown in figure 1

7-Remove the screw (BK) located on the rear bottom left of the computer shown in figure 1

8-Open the computer lid all the way (180°) and remove the keyboard shelf, shown in figure 2

To release the keyboard shelf from the base assembly:

  1.  Gently pull up on the right side of the keyboard shelf.
  2.  Insert a tool into the slots on the back of the computer  and gently push in to release the tabs holding in the shelf.


Removing the Keyboard 


9-Remove the four screws (BF) located on the front, below the keyboard, shown in figure 1 and figure 2

10-Remove the five remaining screws from the bottom of the base.

(For the screw types that are removed in this step, see the figure 1)

Replacement:

  When you reinstall the screws, be careful when tightening the middle screw toward the rear of the computer. If you tighten the screw too much, you can break the plastic base. If you are using an electric screwdriver, set it to a low or sensitive setting to prevent breakage.


11-Remove the screw (BC) located below the right hinge.

Replacement: When you replace the screws in the base and the keyboard shelf, perform the steps in the following order:

  1.  Replace the screw (BC) in step 11  shown in figure 2  Do not tighten the screw until the front keyboard screws are in place.
  2.  Replace the keyboard shelf.
  3.  Replace the front keyboard screws in step 9  shown in figure 1
  4.  Tighten the BC screw.
  5.  Replace the screws in step 10


12-Remove the keyboard, shown in figure 2
To remove the keyboard, push it backward slightly, and then pull it up, then forward and out.

Replacement: When you reinstall the keyboard, follow these steps: When you reinstall the keyboard, be careful not to damage the keyboard cables by pinching or crushing them.

  1.  Attach the three flat cables.
  2.  Tilt the front of the keyboard up and  push the rear of the keyboard toward the back of the computer.
  3.  Press the keyboard down.
  4.  Pull the keyboard slightly forward to engage the latches  located at the back right, and in the middle of the left and  right sides.


Do not pull out the cable before releasing the sliding latch connector.

13-Detach the three keyboard cables from the top system board, shown in figure 1

The keyboard cables use zero insertion force (ZIF) connectors.

Instructions for working with ZIF connectors:
To detach the cables, pull out the small sliding latch under each cable using a small tool to pull on each side.
Try to pull the latch out incrementally on each side, or pull out both sides simultaneously.

Replacement: When you reinstall cables in ZIF connectors, insert the cable connector end, metal side facing up, into the connector, and then gently push in each sliding latch to secure the cable. Do not twist the cables.

Do not pull out the cable before releasing the sliding latch connector.


Separating the Display and Base Units 

14-Detach the LCD cable, shown in figure 2
Slide up the ferrite core on the cable to reach the latches.
The LCD cable uses ZIF connectors.
Replacement: For information about reconnecting the LCD cable, see 'Replacing the LCD Assembly'


15-Remove the ferrite core from the LCD cable, shown in figure 2
Replacement: For information about replacing the ferrite core, see 'Replacing the LCD Assembly'


16-Detach the microphone cable from the top system board, shown in figure 2
Replacement: Make sure that the two aluminum spacers are in place. After you reattach the microphone cable, place any excess cable behind the PCMCIA slot assembly. For information on routing the backlight cable, see 'Routing the Backlight Cable'


17-Detach the LCD backlight cable from the inverter card, shown in figure 2
Replacement: For information on routing the backlight cable, see 'Routing the Backlight Cable'


18-Detach the speaker cable from the top system board, shown in figure 2
Replacement: After you reattach the speaker cable, place any excess cable behind the PCMCIA slot assembly.


19-Remove the four hinge screws (BG) shown in figure 2
Close the computer lid before removing the screws.


20-Remove the LCD assembly, shown in figure 2
Replacement: See 'Disassembling the LCD Assembly' for instructions on FRU removals and replacements for the LCD assembly. See 'Replacing the LCD Assembly'. for instructions on replacing the LCD assembly.


Removing Top System Board and Inverter Card 

21-Remove the top system board and the attached standby battery and inverter card, shown in figure 2. Reuse the rubber spacers.
Separate the metal spacers between the top and bottom system boards. Gently pull up the front of the top system board and insert a tool at the slot located near the battery connector. Press down with the tool and gently pry up to detach the top system board from the bottom system board.
Replacement: See 'Replacing the Top System Board' for information about replacing the top system board.

  please READ - see


22-Remove the standby battery, shown in figure 2
Replacement: When you replace the standby battery, fold the cable and place the standby battery in the space beside the battery pack connector.

  please READ - see


23-Remove the inverter card from the top system board, shown in figure 2


24-Remove the infrared window from the inverter card, shown in figure 2


Removing Bottom System Board and Modem 

25-Remove the screw (BL) holding in the bottom system board, shown in figure 3

26-Remove the two screws (BC) located on the docking connector, shown in figure 3
Replacement: When you replace these screws, use the following order:

  1.  Install one docking connector screw.
  2.  Install the bottom system board screw  (from step 25).
  3.  Install the other docking connector screw.


  please READ - see


27-Remove the bottom system board and the attached modem, shown in figure 3
To remove the bottom system board, push in lightly on the modem connector to free it from the base. Make sure that the modem connector has been freed from its slot in the base before removing the bottom system board.
Replacement: When you replace the bottom system board, keep the speaker cable toward the rear of the computer. Do not leave it folded under the bottom system board. Reuse the rubber spacers.


28-Remove the two bolts (BJ) and nuts (BA) holding the PCMCIA slot assembly to the bottom system board, shown in figure 3


29-Remove the PCMCIA slot assembly, shown in figure 3


30-Remove the modem, shown in figure 3
The modem is held in place with an adhesive gasket. You may need to pry gently on the modem to remove it from the bottom system board. When you reinstall the modem, you may need to apply a new adhesive gasket.


Taking Apart the Base Assembly 


31-Remove the power switch cover, shown in figure 3

The speaker can magnetize metal and corrupt a diskette.

Warning A scratch can damage the speaker. Be careful not to damage it with screwdrivers, screws, or other objects.


32-Remove the speaker, shown in figure 3
After you have removed the speaker, carefully remove any metal particles that might have flaked off.

33-Remove the adhesive gasket, shown in figure 3
Replacement: Follow these steps in order:

  1.  Remove the old adhesive gasket  and apply a new one to the base.
  2.  With the front of the base facing you, rotate the speaker  so that the speaker wires are at one o'clock,  then attach the speaker to the gasket.
  3.  Position the speaker cable under the bottom system board  and between the inverter card and the top system board to the  connector on the top system board.


34-Remove the screen over the speaker, shown in figure 3
If the screen over the speaker is damaged, replace it.

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