Apple imac 17 inch flat panel User Manual
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iMac (17-inch Flat Panel) Take Apart - 59 Power Supply Insulators Power Supply Insulators Tools No tools are required for this procedure. Part Location Note: Insulator color and transparency may vary from those shown above. 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. • Remove the power supply.
60 - iMac (17-inch Flat Panel) Take Apart Power Supply Insulators Procedure 1. Carefully pull the insulators from the chassis (Faraday cage). These are attached to the chassis with double-sided tape. 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. 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. Warning: 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.
iMac (17-inch Flat Panel) Take Apart - 61 Fan Bracket (under fan) Fan Bracket (under fan) 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. • Remove the power supply. • Remove the fan.
62 - iMac (17-inch Flat Panel) Take Apart Fan Bracket (under fan) Procedure 1. Remove the four screws connecting the fan bracket to the chassis (Faraday cage). 2. Lift the fan bracket from the chassis. Note: The fan gasket is stuck to the back side of the fan bracket.
iMac (17-inch Flat Panel) Take Apart - 63 Fan Bracket (under fan)Replacement Note: For reassembly, note the orientation of the neck cables (see below) in the fan bracket: •Blue Blind Mate Connector cable • Green Blind Mate Connector cable •Red TMDS video 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 mating 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 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. Warning: 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.
64 - iMac (17-inch Flat Panel) Take Apart Fan Gasket Fan Gasket Tools No tools are required for this procedure. 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. • Remove the power supply. • Remove the fan. • Remove the fan bracket.
iMac (17-inch Flat Panel) Take Apart - 65 Fan Gasket Procedure 1. Remove the fan bracket retainer and turn it over. Gently peel the fan gasket off the back of the fan bracket. 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. 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. Warning: 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.
66 - iMac (17-inch Flat Panel) Take Apart Cap, Neck Spoke Retainer Cap, Neck Spoke Retainer 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. • Remove the power supply. • Remove the fan.
iMac (17-inch Flat Panel) Take Apart - 67 Cap, Neck Spoke Retainer Procedure 1. The neck cables are highlighted below. Note the cable routing, including the blind mate connector orientation before removing the cap screws and neck cap. 2. There are five screws on the neck cap; however, only the three silver screws need to be removed. The remaining two black screws keep the neck attached to the base.
68 - iMac (17-inch Flat Panel) Take Apart Cap, Neck Spoke Retainer 3. Lift the neck cap off the cables. The two remaining black screws hold the neck to the base. Note the orientation for neck reassembly. 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. 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. Warning: 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.