Apple imac 17in 1ghz 服务手册
74 - iMac (17-inch Flat Panel, 1GHz) Take Apart
Chassis (Faraday Cage)
Replacement Notes:
Faraday cage: Look at the exploded view diagram during reassembly. First, attach the
Faraday top cover to the top (OUTSIDE) of the Faraday cage as shown below; the
Faraday top cover is keyed. Next, thread the neck cables through the hole in the Faraday
cage and install the Faraday cage into the top plastic housing. Replace the screw that
holds the plastic housing to the chassis. Attach the black neck cap screws to connect the
neck to the chassis. Route the neck cables correctly in the base and replace the fan
bracket retainer and three remaining neck cap screws.
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 mating surfaces,
and reapply thermal paste to the mating surfaces on the thermal pipe.
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 minimum of 17
in.-lbs. Use a torque driver (service tool 076-0899) to ensure that the thermal pipe is
firmly mated with the top base. If you do not have a torque driver, you must make
sure the screws are tightened by hand FIRMLY, BUT NOT FORCIBLY.
Failure to follow these steps could cause the computer to overheat and
damage internal components.
Refer to the topic “Thermal Paste Application” for detailed information.