Apple imac 17 inch User Manual
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![Page 16
3. Disconnect the following:
A
Power supply connector
B Hard drive/optical drive data cable
C AC line filter connector
D AirPort antenna connector
E Plastic cable retainer and video cable
F Grounding screw
Note: View the document at a larger size to enlarge this graphic .
4. Set the bottom housing aside.
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...](http://img.usermanuals.tech/thumb/462/38776/w64_imac-17-inch-1ghz-15.png "Page 16
3. Disconnect the following:
A
Power supply connector
B Hard drive/optical drive data cable
C AC line filter connector
D AirPort antenna connector
E Plastic cable retainer and video cable
F Grounding screw
Note: View the document at a larger size to enlarge this graphic .
4. Set the bottom housing aside.
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...")
![Page 18
Procedure
1. Thoroughly clean the original thermal film from the mating surfaces (circled below) of
the bottom housing and thermal pipe. Use a plastic stylus to scrape the surfaces
clean. Note: Do not use an abrasive material or liquid cleaner.
2. Squeeze a thin film of thermal paste onto the thermal pipe. Spread the paste evenly.
3. Replace the bottom housing. Warning: The bottom housing has four torx screws
that must be tightened to at least 17 in.-lbs. If you do not have a torq\
ue
driver,...](http://img.usermanuals.tech/thumb/462/38776/w64_imac-17-inch-1ghz-17.png "Page 18
Procedure
1. Thoroughly clean the original thermal film from the mating surfaces (circled below) of
the bottom housing and thermal pipe. Use a plastic stylus to scrape the surfaces
clean. Note: Do not use an abrasive material or liquid cleaner.
2. Squeeze a thin film of thermal paste onto the thermal pipe. Spread the paste evenly.
3. Replace the bottom housing. Warning: The bottom housing has four torx screws
that must be tightened to at least 17 in.-lbs. If you do not have a torq\
ue
driver,...")
![Page 20
Procedure
1. Remove two screws and disconnect the cable from the modem.
2. Remove the RJ-11 board from the I/O port.
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...](http://img.usermanuals.tech/thumb/462/38776/w64_imac-17-inch-1ghz-19.png "Page 20
Procedure
1. Remove two screws and disconnect the cable from the modem.
2. Remove the RJ-11 board from the I/O port.
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...")
![Page 22
Procedure
1. Remove two screws and disconnect the cable.
2. Lift the modem from the connector on the logic board.
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 minim\
um 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-21.png "Page 22
Procedure
1. Remove two screws and disconnect the cable.
2. Lift the modem from the connector on the logic board.
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 minim\
um of 17
in.-lbs. If you do not have a torque driver, you will have to make sure \...")
![Page 24
Procedure
1. Push down on the ejector tabs to release the memory module.
2. Pull the memory up and out of the slot.
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 minim\
um 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-23.png "Page 24
Procedure
1. Push down on the ejector tabs to release the memory module.
2. Pull the memory up and out of the slot.
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 minim\
um of 17
in.-lbs. If you do not have a torque driver, you will have to make sure...")
![Page 26
Procedure
1. Using a flatblade screwdriver, gently pry the battery from the battery holder.
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 minim\
um of 17
in.-lbs. If you do not have a torque driver, you will have to make sure \
these
screws are...](http://img.usermanuals.tech/thumb/462/38776/w64_imac-17-inch-1ghz-25.png "Page 26
Procedure
1. Using a flatblade screwdriver, gently pry the battery from the battery holder.
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 minim\
um of 17
in.-lbs. If you do not have a torque driver, you will have to make sure \
these
screws are...")
Modem 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. 18 iMac (Flat Panel) Take Apart RJ-11 Modem Filter Board
Procedure 1. Remove two screws and disconnect the cable. 2. Lift the modem from the connector on the logic board. 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 minim\ um 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 the 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 could cause the computer to overheat and da\ mage internal components. Refer to the topic, “Thermal Paste Application” for detailed infor\ mation. RJ-11 Modem Filter Board iMac (Flat Panel) Take Apart - 19
Memory (factory-installed) Tools This procedure requires the following tools: • No tools are required Part Location Note: The factory-installed memory slot is identified as Slot J13 by Apple Hardware Test and Apple System Profiler. Preliminary Steps Before you begin, do the following: • Position the computer in the service stand. • Remove the user access plate. • Remove the bottom housing. 20 iMac (Flat Panel) Take Apart Memory (factory-installed)
Procedure 1. Push down on the ejector tabs to release the memory module. 2. Pull the memory up and out of the slot. 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 minim\ um 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. Memory (factory-installed) iMac (Flat Panel) Take Apart - 21
Battery Tools This procedure requires the following tools: • No tools are required 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. 22 iMac (Flat Panel) Take Apart Battery
Procedure 1. Using a flatblade screwdriver, gently pry the battery from the battery holder. 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 minim\ um 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 the 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 could cause the computer to overheat and da\ mage internal components. Refer to the topic, “Thermal Paste Application” for detailed infor\ mation. Battery iMac (Flat Panel) Take Apart - 23
Logic Board Tools This procedure requires the following tools: • Phillips #2 screwdriver (for the plastic screw) • Torx-15 screwdriver Part Location Note: The battery, RJ-11 board, AirPort card, modem, I/O port covers, and memory (on the top and the bottom of the logic board) need to be removed from the logic board before returning the board to Apple for service. 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 RJ-11 board. 24 iMac (Flat Panel) Take Apart Logic Board
Procedure 1. Remove the three metal torx screws and the one plastic screw. Logic Board iMac (Flat Panel) Take Apart - 25
2. Grab the logic board by the battery retainer and the hard drive connector. Lift the board and pull back to release the board from the bottom housing and I/O ports. Note: The I/O port covers may come out with the logic board when it’s removed. 3. Remove the I/O port covers from the logic board. 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 the 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 could cause the computer to overheat and da\ mage internal components. Refer to the topic, “Thermal Paste Application” for detailed infor\ mation. Warning: Whenever the logic board is separated from the bottom housing, you must install new thermal pads to three surfaces on the bottom housing. The thermal pads help cool components on the logic board. Failure to apply these pads whenever the logic board 26 iMac (Flat Panel) Take Apart Logic Board
is separated from the bottom housing could cause these parts to overheat. Short term separation, where the thermal pads are not handled excessively (an exception would be if you are simply testing the logic board and only detach it for a few m\ inutes) , does not require replacement. Refer to “Thermal Pad Installation” in this chapter for detailed information. Important: Diagnostic service cables allow the unit to run while the bottom housing is open (as shown above). However, the computer cannot run for more than five minutes with the bottom housing open. If it is open longer, the CPU may overheat and become damaged. Logic Board iMac (Flat Panel) Take Apart - 27