Apple imac 17 inch flat panel User Manual
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iMac (17-inch Flat Panel) Take Apart - 69 Blind Mate Connector Blind Mate Connector 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. • Remove the fan bracket. • Remove the neck spoke retainer cap.
70 - iMac (17-inch Flat Panel) Take Apart Blind Mate Connector Procedure 1. Remove the two screws. 2. Lift the blind mate connector off the chassis. Note: The blind mate connector is part of the neck assembly. Replacement Notes: Blind Mate Connector: Make sure to replace the connector into the chassis with the tab on the blind mate connector facing inward (toward the fan). And, when tightening the screws, the blind mate connector should have some play; do not tighten down so it doesn’t move at all. 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 - 71 Chassis (Faraday Cage) Chassis (Faraday Cage) Tools This procedure requires the following tools: • Torx-10 screwdriver • Torx-8 screwdriver for the logo screw 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.
72 - iMac (17-inch Flat Panel) Take Apart Chassis (Faraday Cage) • Remove the power supply. • Remove the fan. • Remove the plastic cable retainer (under the fan). • Remove the neck spoke retainer cap. • Remove the blind mate connector screws. Procedure 1. Bundle the neck cables to one side (as shown). Supporting the base, remove the two black screws that connect the neck to the Faraday base.
iMac (17-inch Flat Panel) Take Apart - 73 Chassis (Faraday Cage)2. Carefully feed the neck cables through the hole in the Faraday cage. Important: The Faraday cage is very heavy and has sharp edges; handle with care.
74 - iMac (17-inch Flat Panel) Take Apart Chassis (Faraday Cage) 3. Pull the outer shell (with Faraday attached) away from the neck.Note: There is no need to remove the outer shell from the Faraday unless you are replacing the antenna or the outer shell. If you are removing the shell from the Faraday cage, go on to the next step. 4.Note: : Perform this step only if you are replacing the antenna or the outer shell. Remove the three screws in the base of the Faraday cage to separate the shell from the Faraday cage.
iMac (17-inch Flat Panel) Take Apart - 75 Chassis (Faraday Cage)Replacement Notes: 5.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 three screws that hold the plastic housing to the chassis. Attach two neck cap screws to connect the neck to the chassis. Then route the neck cables correctly in the base and replace the fan bracket retainer and three remaining 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. 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.
76 - iMac (17-inch Flat Panel) Take Apart AirPort Antenna AirPort Antenna Tools This procedure requires the following tools: • Torx-8 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 power supply insulators. • Remove the optical drive door. • Remove the internal speaker. • Remove the fan.
iMac (17-inch Flat Panel) Take Apart - 77 AirPort Antenna• Remove the fan bracket under the fan. • Remove the neck spoke retainer cap. • Remove the blind mate connector screws. • Remove the Faraday cage. Procedure 1. Remove the mounting screw and unclip each of two antenna boards from the Faraday cage. Remove any tape, and carefully separate the antenna board cable from the Faraday cage.
78 - iMac (17-inch Flat Panel) Take Apart AirPort Antenna 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.