Apple imac 17 inch User Manual
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![Page 56
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 the surfaces joining the\
thermal
interface layer and reapply thermal paste to the thermal pipe.
2. You must tighten the four torx screws on the bottom housing to a minimu\
m of 17
in.-lbs. If you do not have a torque driver, you will have to make sure...](http://img.usermanuals.tech/thumb/462/38776/w64_imac-17-inch-1ghz-55.png "Page 56
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 the surfaces joining the\
thermal
interface layer and reapply thermal paste to the thermal pipe.
2. You must tighten the four torx screws on the bottom housing to a minimu\
m of 17
in.-lbs. If you do not have a torque driver, you will have to make sure...")
![Page 58
Procedure
1. Remove the two fan screws and disconnect the fan connector.
2. Lift the fan out of the chassis (Faraday cage).
Warning: Whenever the bottom housing is opened for service, you must do two things:
1.You must clean the original thermal film from the surfaces joining the\
thermal
interface layer and reapply thermal paste to the thermal pipe.
2. You must tighten the four torx screws on the bottom housing to a minimu\
m of 17
in.-lbs. If you do not have a torque driver, you will have to...](http://img.usermanuals.tech/thumb/462/38776/w64_imac-17-inch-1ghz-57.png "Page 58
Procedure
1. Remove the two fan screws and disconnect the fan connector.
2. Lift the fan out of the chassis (Faraday cage).
Warning: Whenever the bottom housing is opened for service, you must do two things:
1.You must clean the original thermal film from the surfaces joining the\
thermal
interface layer and reapply thermal paste to the thermal pipe.
2. You must tighten the four torx screws on the bottom housing to a minimu\
m of 17
in.-lbs. If you do not have a torque driver, you will have to...")
![Page 60
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 the surfaces joining the\
thermal
interface layer and reapply thermal paste to the thermal pipe.
2. You must tighten the four torx screws on the bottom housing to a minimu\
m of 17
in.-lbs. If you do not have a torque driver, you...](http://img.usermanuals.tech/thumb/462/38776/w64_imac-17-inch-1ghz-59.png "Page 60
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 the surfaces joining the\
thermal
interface layer and reapply thermal paste to the thermal pipe.
2. You must tighten the four torx screws on the bottom housing to a minimu\
m of 17
in.-lbs. If you do not have a torque driver, you...")
![Page 64
Procedure
1. Remove the plastic cable retainer and turn it over. Gently peel the fan gasket off the
back of the cable retainer.
Warning: Whenever the bottom housing is opened for service, you must do two things:
1.You must clean the original thermal film from the surfaces joining the\
thermal
interface layer and reapply thermal paste to the thermal pipe.
2. You must tighten the four torx screws on the bottom housing to a minimu\
m of 17
in.-lbs. If you do not have a torque driver, you will have...](http://img.usermanuals.tech/thumb/462/38776/w64_imac-17-inch-1ghz-63.png "Page 64
Procedure
1. Remove the plastic cable retainer and turn it over. Gently peel the fan gasket off the
back of the cable retainer.
Warning: Whenever the bottom housing is opened for service, you must do two things:
1.You must clean the original thermal film from the surfaces joining the\
thermal
interface layer and reapply thermal paste to the thermal pipe.
2. You must tighten the four torx screws on the bottom housing to a minimu\
m of 17
in.-lbs. If you do not have a torque driver, you will have...")
Neck Cable Retainer (under fan) Tools This procedure requires the following tools: • Torx-10 screwdriver Part Location Note: View the document at a larger size to enlarge this graphic. 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. 58 iMac (Flat Panel) Take Apart Neck Cable Retainer (under fan)
Procedure 1. WIth the optical door oriented upward, remove the four screws connecting the plastic cable retainer to the chassis (Faraday cage). Note: View the document at a larger size to enlarge this graphic. 2. Lift the plastic cable retainer from the chassis. Note: The fan gasket is stuck to the back side of the plastic cable retainer. Warning: Whenever the bottom housing is opened for service, you must do two things: 1.You must clean the original thermal film from the surfaces joining the\ thermal interface layer and reapply thermal paste to the thermal pipe. 2. You must tighten the four torx screws on the bottom housing to a minimu\ m of 17 in.-lbs. If you do not have a torque driver, you will have to make sure \ these screws are tightened by hand FIRMLY, BUT NOT FORCIBLY. Or, purchase the service\ tool (076-0899) in order to ensure the thermal pipe is firmly mated with th\ e top base. If the bottom housing is not securely attached to the base in this fashion, the\ CPU may overheat and become damaged. Failure to follow either of these steps cou\ ld cause the computer to overheat and damage internal components. Refer to the topic, “Thermal Paste Application” for detailed infor\ mation. Neck Cable Retainer (under fan) iMac (Flat Panel) Take Apart - 59
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 plastic cable retainer. 60 iMac (Flat Panel) Take Apart Fan Gasket
Procedure 1. Remove the plastic cable retainer and turn it over. Gently peel the fan gasket off the back of the cable retainer. Warning: Whenever the bottom housing is opened for service, you must do two things: 1.You must clean the original thermal film from the surfaces joining the\ thermal interface layer and reapply thermal paste to the thermal pipe. 2. You must tighten the four torx screws on the bottom housing to a minimu\ m of 17 in.-lbs. If you do not have a torque driver, you will have to make sure \ these screws are tightened by hand FIRMLY, BUT NOT FORCIBLY. Or, purchase the service\ tool (076-0899) in order to ensure the thermal pipe is firmly mated with th\ e top base. If the bottom housing is not securely attached to the base in this fashion, the\ CPU may overheat and become damaged. Failure to follow either of these steps cou\ ld cause the computer to overheat and damage internal components. Refer to the topic, “Thermal Paste Application” for detailed infor\ mation. Fan Gasket iMac (Flat Panel) Take Apart - 61
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. • Remove the plastic cable retainer. 62 iMac (Flat Panel) Take Apart 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. Note: View the document at a larger size to enlarge the next two graphics. 2. Loosen the three silver screws (circled below) to remove the neck cap. Lift the cap off the spokes. Note: The two black screws keep the neck attached to the base. Cap, Neck Spoke Retainer iMac (Flat Panel) Take Apart - 63
Warning: Whenever the bottom housing is opened for service, you must do two things: 1.You must clean the original thermal film from the surfaces joining the\ thermal interface layer and reapply thermal paste to the thermal pipe. 2. You must tighten the four torx screws on the bottom housing to a minimu\ m of 17 in.-lbs. If you do not have a torque driver, you will have to make sure \ these screws are tightened by hand FIRMLY, BUT NOT FORCIBLY. Or, purchase the service\ tool (076-0899) in order to ensure the thermal pipe is firmly mated with th\ e top base. If the bottom housing is not securely attached to the base in this fashion, the\ CPU may overheat and become damaged. Failure to follow either of these steps cou\ ld cause the computer to overheat and damage internal components. Refer to the topic, “Thermal Paste Application” for detailed infor\ mation. 64 iMac (Flat Panel) Take Apart Cap, Neck Spoke Retainer
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 plastic cable retainer. • Remove the cap neck spoke retainer. Blind Mate Connector iMac (Flat Panel) Take Apart - 65
Procedure 1. Remove the two blind mate screws. Replacement Note: The tab on the blind mate connector faces inward. 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 blind mate connector into the chassis with the tab 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 the surfaces joining the\ thermal interface layer and reapply thermal paste to the thermal pipe. 2. You must tighten the four torx screws on the bottom housing to a minimu\ m of 17 in.-lbs. If you do not have a torque driver, you will have to make sure \ these screws are tightened by hand FIRMLY, BUT NOT FORCIBLY. Or, purchase the service\ tool (076-0899) in order to ensure the thermal pipe is firmly mated with th\ e top base. If the bottom housing is not securely attached to the base in this fashion, the\ CPU may overheat and become damaged. Failure to follow either of these steps cou\ ld cause the computer to overheat and damage internal components. Refer to the topic, “Thermal Paste Application” for detailed infor\ mation. 66 iMac (Flat Panel) Take Apart Blind Mate Connector
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. • Remove the power supply. • Remove the fan. Chassis (Faraday Cage) iMac (Flat Panel) Take Apart - 67