Apple imac usb 2 0 User Manual
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Page 61
52 - iMac (USB 2.0) Take Apart Optical Drive Door Optical Drive Door Tools This procedure requires the following tools: • Torx-10 screwdriver • Needlenose pliers Part Location Preliminary Steps Before you begin, do the following: • Position the computer in the service stand. • Remove the user access plate. • Remove the bottom housing. • Remove the drive carrier assembly.
Page 62
iMac (USB 2.0) Take Apart - 53 Optical Drive Door Procedure 1. Remove four screws on the power supply shield. Set the shield aside. Important: The two screws near the door hinge are shorter than the other power supply screws. Failure to replace the shorter screws to their correct location will scratch the top housing. See the Power Supply topic, step 4, Replacement Note, for a picture of what happens when the wrong screws are inserted in the wrong location.
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54 -
iMac (USB 2.0) Take Apart Optical Drive Door
2. Slide the optical door guide off the chassis and the door hinge tabs (c\
ircled).
3. Carefully remove the two door springs with a needlenose pliers.](http://img.usermanuals.tech/thumb/462/38804/w300_imac-usb-2-0-62.png "Page 63
54 -
iMac (USB 2.0) Take Apart Optical Drive Door
2. Slide the optical door guide off the chassis and the door hinge tabs (c\
ircled).
3. Carefully remove the two door springs with a needlenose pliers.")
54 - iMac (USB 2.0) Take Apart Optical Drive Door 2. Slide the optical door guide off the chassis and the door hinge tabs (c\ ircled). 3. Carefully remove the two door springs with a needlenose pliers.
Page 64
iMac (USB 2.0) Take Apart - 55 Optical Drive Door 4. Remove the door hinge screws. 5. Open the door.
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56 -
iMac (USB 2.0) Take Apart Optical Drive Door
6. Slide the door and hinge off the chassis.
Warning:
Whenever the bottom housing is opened for service, you must do two things:
1.You must clean the original thermal film from all thermal interface ma\
ting surfaces,
and reapply thermal paste to the mating surfaces on the thermal pipe.
2. You must tighten the four torx screws on the bottom housing to a mini\
mum of 17
in.-lbs. Use a torque driver (service tool 076-0899) to ensure that th\...](http://img.usermanuals.tech/thumb/462/38804/w300_imac-usb-2-0-64.png "Page 65
56 -
iMac (USB 2.0) Take Apart Optical Drive Door
6. Slide the door and hinge off the chassis.
Warning:
Whenever the bottom housing is opened for service, you must do two things:
1.You must clean the original thermal film from all thermal interface ma\
ting surfaces,
and reapply thermal paste to the mating surfaces on the thermal pipe.
2. You must tighten the four torx screws on the bottom housing to a mini\
mum of 17
in.-lbs. Use a torque driver (service tool 076-0899) to ensure that th\...")
56 - iMac (USB 2.0) Take Apart Optical Drive Door 6. Slide the door and hinge off the chassis. Warning: Whenever the bottom housing is opened for service, you must do two things: 1.You must clean the original thermal film from all thermal interface ma\ ting surfaces, and reapply thermal paste to the mating surfaces on the thermal pipe. 2. You must tighten the four torx screws on the bottom housing to a mini\ mum of 17 in.-lbs. Use a torque driver (service tool 076-0899) to ensure that th\...
Page 66
iMac (USB 2.0) Take Apart - 57 Speaker, Internal Speaker, Internal Tools This procedure requires the following tools: • Torx-10 screwdriver Part Location Preliminary Steps Before you begin, do the following: • Position the computer in the service stand. • Remove the user access plate. • Remove the bottom housing. • Remove the drive carrier assembly.
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58 - iMac (USB 2.0) Take Apart
Speaker, Internal
Procedure
1. Loosen the two screws enough to slide the speaker off the metal posts. Disconnect
the speaker cable.
Warning: Whenever the bottom housing is opened for service, you must do two things:
1.You must clean the original thermal film from all thermal interface ma\
ting surfaces,
and reapply thermal paste to the mating surfaces on the thermal pipe.
2. You must tighten the four torx screws on the bottom housing to a mini\
mum of 17
in.-lbs. Use...](http://img.usermanuals.tech/thumb/462/38804/w300_imac-usb-2-0-66.png "Page 67
58 - iMac (USB 2.0) Take Apart
Speaker, Internal
Procedure
1. Loosen the two screws enough to slide the speaker off the metal posts. Disconnect
the speaker cable.
Warning: Whenever the bottom housing is opened for service, you must do two things:
1.You must clean the original thermal film from all thermal interface ma\
ting surfaces,
and reapply thermal paste to the mating surfaces on the thermal pipe.
2. You must tighten the four torx screws on the bottom housing to a mini\
mum of 17
in.-lbs. Use...")
58 - iMac (USB 2.0) Take Apart Speaker, Internal Procedure 1. Loosen the two screws enough to slide the speaker off the metal posts. Disconnect the speaker cable. Warning: Whenever the bottom housing is opened for service, you must do two things: 1.You must clean the original thermal film from all thermal interface ma\ ting surfaces, and reapply thermal paste to the mating surfaces on the thermal pipe. 2. You must tighten the four torx screws on the bottom housing to a mini\ mum of 17 in.-lbs. Use...
Page 68
iMac (USB 2.0) Take Apart - 59 Fan Fan Tools This procedure requires the following tools: • Torx-15 screwdriver Part Location Preliminary Steps Before you begin, do the following: • Position the computer in the service stand. • Remove the user access plate. • Remove the bottom housing. • Remove the drive carrier assembly.
Page 69
60 - iMac (USB 2.0) Take Apart Fan Procedure 1. Remove the two fan screws and disconnect the fan connector. 2. Pull the fan out of the chassis (Faraday cage). Note: The replacement fan includes the mounting bracket. 3. Note: The fan on the 20-inch iMac (USB 2.0), 922-6215, is different (identify by the amps highlighted below) from the fan used on the 15-inch and the 17-inch iMac (USB 2.0) computers. The 20-inch iMac (USB 2.0) fan is shown below.
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iMac (USB 2.0) Take Apart - 61
Fan Warning:
Whenever the bottom housing is opened for service, you must do two things:
1.You must clean the original thermal film from all thermal interface ma\
ting surfaces,
and reapply thermal paste to the mating surfaces on the thermal pipe.
2. You must tighten the four torx screws on the bottom housing to a mini\
mum of 17
in.-lbs. Use a torque driver (service tool 076-0899) to ensure that th\
e thermal pipe is
firmly mated with the top base. If you do not...](http://img.usermanuals.tech/thumb/462/38804/w300_imac-usb-2-0-69.png "Page 70
iMac (USB 2.0) Take Apart - 61
Fan Warning:
Whenever the bottom housing is opened for service, you must do two things:
1.You must clean the original thermal film from all thermal interface ma\
ting surfaces,
and reapply thermal paste to the mating surfaces on the thermal pipe.
2. You must tighten the four torx screws on the bottom housing to a mini\
mum of 17
in.-lbs. Use a torque driver (service tool 076-0899) to ensure that th\
e thermal pipe is
firmly mated with the top base. If you do not...")
iMac (USB 2.0) Take Apart - 61 Fan Warning: Whenever the bottom housing is opened for service, you must do two things: 1.You must clean the original thermal film from all thermal interface ma\ ting surfaces, and reapply thermal paste to the mating surfaces on the thermal pipe. 2. You must tighten the four torx screws on the bottom housing to a mini\ mum of 17 in.-lbs. Use a torque driver (service tool 076-0899) to ensure that th\ e thermal pipe is firmly mated with the top base. If you do not...