Apple imac 17 inch flat panel User Manual

 iMac (17-inch Flat Panel)  Take Apart - 29
 I/O Port Covers
Procedure
1. Gently 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 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)...

30 - iMac (17-inch Flat Panel) Take Apart
 Antenna Extension Cable
Antenna Extension Cable
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 RJ-11 board
• Remove the logic board. 

 iMac (17-inch Flat Panel)  Take Apart - 31
 Antenna Extension Cable
Procedure
1. Remove two screws (1 below) from the thermal interface layer of the bottom housing.
2. Pry up the thermal interface layer to separate it from the bottom housing. Remove the 
cable from two plastic cable clips (2 below).
Replacement Note: Be careful not to pinch the antenna extension cable when 
replacing it beneath the thermal interface layer; position the cable in the channel cut 
into the bottom of the thermal extension...

32 - iMac (17-inch Flat Panel) Take Apart
 Antenna Extension Cable parts to overheat and could damage internal components. 
Note: AFTER installing new thermal pads, if you must briefly re-separate the logic board 
from the housing, it is OK to retain the same, new pads as long as they are not handled 
excessively. Refer to “Thermal Pad Installation” in this chapter for detailed information. 

 iMac (17-inch Flat Panel)  Take Apart - 33
 Thermal Pad Installation
Thermal Pad Installation
Tools
• No tools are required.
• Thermal pad kit 
Part Location
Warning:  Whenever the logic board is separated from the bottom housing, you must 
install new thermal pads to three surfaces on the bottom housing. Failure to apply these 
pads whenever the logic board is separated from the bottom housing could cause these 
parts to overheat and could damage internal components. 
Note: AFTER installing new thermal...

34 - iMac (17-inch Flat Panel) Take Apart
 Thermal Pad Installation
Procedure 
1. Remove the old thermal pads (shown below) from the bottom housing. Note:  If you 
don’t see all three thermal pads on the bottom housing, check the bottom side of the 
logic board. The thermal pads may stick to the logic board. Either way, remove the old 
thermal pads. 
2. Using the thermal pad kit, remove the clear protective backing from the new thermal 
pads. 
3. Place the new thermal pads on the bottom housing. Press...

 iMac (17-inch Flat Panel)  Take Apart - 35
 AC Line Filter
AC Line Filter 
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 RJ-11 board.
• Remove the logic board. 

36 - iMac (17-inch Flat Panel) Take Apart
 AC Line Filter
Procedure
1. Peel back the black insulator on the bottom housing to access the AC line filter 
screws.
2. Remove two screws and lift the AC line filter from the bottom housing. Note: The AC 
line port cover plug may fall out of the bottom housing when you remove the AC line 
filter. Place the plug back into the bottom housing before reinstalling the AC line filter.  

 iMac (17-inch Flat Panel)  Take Apart - 37
 AC Line FilterWarning: 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...

38 - iMac (17-inch Flat Panel) Take Apart
 Drive Carrier Assembly (Optical and Hard Drive)
Drive Carrier Assembly (Optical 
and Hard Drive)
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 with the door facing up.
• Remove the user access plate.
• Remove the bottom housing.