Apple imac 17 inch flat panel User Manual

							iMac (17-inch Flat Panel) Troubleshooting - 29
Modem Symptom Charts
Modem
No modem dial tone
1. Verify known-good analog (not digital) telephone line.
2. Verify known-good RJ-11 telephone cable.
3. Verify RJ-11 cable is not plugged into Ethernet port.
4. Inspect RJ-11 connector and modem port for pin damage.
5. Verify RJ-11 cable is firmly installed in the modem port.
6. Verify correct modem driver is installed and the correct CCL is selected. If the problem persists, reinstall 
system software.
7. Open the bottom housing. Verify the internal RJ-11 modem cable is connected to the modem.
8. Replace the RJ-11 board.
9. Replace the modem.
10. Replace the logic board.  
						

							30 - iMac (17-inch Flat Panel) Troubleshooting
I/O Ports Symptom Charts
I/O Ports
Difficulty Plugging in an Ethernet Cable
Note:  The Ethernet port on an iMac (Flat Panel) has a special mechanism to prevent modem cables from 
accidentally being inserted. In some cases, this mechanism can cause difficulty when attempting to plug in 
an Ethernet cable.
1.  Verify that you are plugging into the Ethernet port. See graphic below.
2. Notice that the port has two metal tabs (circled below) which prohibit the use of a modem cable.
3. When inserting the Ethernet cable, try holding the cable at a slight angle and wiggle the connector to 
get past the metal tabs.
4. Once the connector has passed the metal tabs it should slide in with no further difficulty. 
						

							iMac (17-inch Flat Panel) Troubleshooting - 31
USB Printing Problems Symptom Charts
USB Printing Problems
iMac cannot print to attached known-good printer.
1. Verify that the printer is Macintosh compatible.
2. Verify that you have setup the printer correctly in OS X.
3. Reinstall the printer driver.
4. Switch the printer to another USB port.
5. Replace the printer interface cable.
6. System software is corrupted. Reinstall the system software.
7. Replace the logic board.  
						

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 Service Source
Upgrades
 iMac (17-inch Flat Panel) 
						

							 iMac (17-inch Flat Panel)  Upgrades - 1
 Memory, SO-DIMM
Memory, SO-DIMM
Tools
• Phillips #0 screwdriver.
Part Location
The iMac has two RAM expansion slots. The factory-installed RAM slot accepts a 
standard PC133 168-pin DIMM (up to 512 MB in capacity) and is accessible only by an 
Apple Authorized Service Provider. The user-accessible slot (shown above) accepts a 
standard PC133 144-pin SO-DIMM and is normally used for added RAM. Only the SO-
DIMM slot is accessible by the user. A SO-DIMM for the iMac computer can contain either 
64, 128, 256, or 512 MB of memory.
Note:  This procedure describes installing a SO-DIMM memory module in the user-
accessible slot. 
						

							2 -   iMac  (17-inch Flat Panel)  Upgrades
 Memory, SO-DIMM
Procedure
Opening the Computer
Warning: The computer must be turned off before RAM modules are removed or 
inserted. To remind you, a red LED is visible in the access door. If the red LED is on, 
power is on, and must be turned off before changing RAM modules.
1. Shut down the computer. 
2. Unplug all cables from the computer except the power cord.
3. Lay the computer down on a soft cloth. 
						

							 iMac (17-inch Flat Panel)  Upgrades - 3
 Memory, SO-DIMM4. Loosen the four captive screws at the base of the computer and gently remove the 
access panel.  
						

							4 -   iMac  (17-inch Flat Panel)  Upgrades
 Memory, SO-DIMM Important: To avoid electrostatic discharge, always ground yourself by touching 
metal before you touch any parts or install any components inside the computer. To 
avoid static electricity building back up in your body, do not walk around the room 
until you have completed the installation and closed the computer. 
5. Touch a metal surface inside the computer. 
6. Unplug the power cord. 
						

							 iMac (17-inch Flat Panel)  Upgrades - 5
 Memory, SO-DIMM
Installing the Memory Module
Note: If you are replacing a defective memory module, rather than adding a module, 
remove the defective module before proceeding.
1. Line up the notch on the memory module with the notch (circled below) on the 
memory slot.
2.  Important: Do not push the clips (circled below) when inserting memory. They are 
used to remove memory from the slot, not when inserting memory. These clips are 
fragile and can break. 
						

							6 -   iMac  (17-inch Flat Panel)  Upgrades
 Memory, SO-DIMM 3. Gently insert the memory module into the slot. You will hear a click when the memory 
is completely inserted into the slot. Note: Make certain to push the memory module in 
the direction of the arrows. 
4. Press down gently on the memory until you hear it click into place under the two 
locking tabs (circled below) on the sides of the slot.