Apple eMac User Manual

							30 - eMac  Troubleshooting
Vertical Raster Shift Symptom Charts 8.
With the nylon probe tool or needlenose pliers, remove the glue from the cable connector. 
Note: If you find it difficult removing the glue use a heat gun to soften the glue a bit and then 
remove it.
9. Clip the cable tie. Disconnect the IVAD cable from the board.  
						

							eMac  Troubleshooting - 31
Vertical Raster Shift Symptom Charts
IVAD Cable Replacement Procedure
1. Install the replacement IVAD cable.
2. Replace the cable tie (shown on the previous page).
3. Place hot glue on each end of the IVAD connector.
4. Reassemble the computer and test the system. 
						

							32 - eMac  Troubleshooting
Mass Storage Symptom Charts
Mass Storage
Flashing question mark appears on the screen
1. Boot from the system CD that came with the computer and see if the hard drive mounts on the 
desktop.
2. Launch Drive Setup and update the hard drive driver.
3. If no hard drive is found in Drive Setup, verify the hard drive cable connections.
4. Replace the hard drive cable.
5. Reinstall the software drivers for the hard drive.
6. Reinstall system software. Note: Backup the data first.
7. Reinitialize the hard drive.
8. Replace the hard drive.
9. Replace the logic board.
Alternating flashing question mark and a flashing Mac OS face on a folder.
1. This symptom could indicate damaged system software or non-compatible system software. Boot from 
the system CD that came with the computer and see if the hard drive mounts on the desktop.
2. Launch Drive Setup and update the hard drive driver.
3. If no hard drive is found in Drive Setup, verify the hard drive cable connections.
4. Replace the hard drive cable.
5. Reinstall the software drivers for the hard drive.
6. Reinstall system software. Note: Backup the data first.
7. Reinitialize the hard drive.
8. Replace the hard drive.
9. Replace the logic board.
Hard drive spins, but won’t mount to the desktop
1. Disconnect any connected peripherals.
2. Boot from the system CD that came with the computer and see if the hard drive mounts on the 
desktop.
3. Launch Drive Setup and update the hard drive driver.
4. If no hard drive is found in Drive Setup, verify the hard drive cable connections.
5. Replace the hard drive cable.
6. Replace the hard drive.
7. Replace the logic board. 
						

							eMac  Troubleshooting - 33
Mass Storage Symptom Charts
Hard drive does not spin. 
1. Disconnect any connected peripherals.
2. Boot from the system CD that came with the computer and see if the hard drive mounts on the desktop.
3. Launch Drive Setup and update the hard drive driver.
4. If no hard drive is found in Drive Setup, verify the hard drive cable connections.
5. Replace the hard drive cable.
6. Replace the hard drive.
7. Replace the logic board.
System hangs during normal startup process
1. Boot from the system CD that came with the computer and see if the hard drive mounts on the desktop.
2. Using Drive Setup, reinstall the system software drivers for the hard drive.
3. Using Drive Setup, reinitialize the hard drive.
4. Check all cable connections to and from the hard drive.
5. Replace the hard drive cable.
6. Replace the hard drive.
7. Replace the logic board.
CD or DVD tray won’t open 
1. Check for obstructions on the optical drive door.
2. Replace the optical drive cable.
3. Replace the optical drive.
4. Replace the logic board.
5. Replace the down converter.
Optical drive won’t accept a CD or DVD 
1. Check for obstructions on the optical drive door.
2. Replace the optical drive cable.
3. Replace the optical drive.
4. Replace the logic board.
5. Replace the down converter.
CD or DVD disc constantly ejects at startup
1. Try cleaning the disc. If it is dirty or scratched, it may not mount. 
						

							34 - eMac  Troubleshooting
Mass Storage Symptom Charts 2. Try a known good disc.
3. Disconnect all peripheral devices, especially the mouse in cases where the disc is constantly ejecting. 
This symptom may be an indication of a failed mouse giving a signal that the mouse is stuck in the 
down position. Try a known good mouse.
4. Boot from Apple Hardware Test (hold down the “C” key at startup) or boot from the system install CD 
(use Startup Manager, hold down the Option key at startup).
5. Perform a clean install with the CD that came with the computer.
6. Replace the optical drive cable.
7. Replace the optical drive.
8. Replace the logic board.
Optical drive doesn’t spin
1.  Replace the optical drive cable.
2. Replace the optical drive.
3. Replace the logic board.
4. Replace the down converter. 
						

							eMac  Troubleshooting - 35
Mass Storage Symptom Charts
CD or DVD won’t mount to the desktop
1. Try cleaning the disc. If it is dirty or scratched, it may not mount.
2. Try a known good disc.
3. Refer to the “Flashing Question Mark” symptoms mentioned in this section.
4. Boot from Apple Hardware Test (hold down the “C” key at startup) or boot from the system install CD 
(use Startup Manager, hold down the Option key at startup).
5. Perform a clean install with the CD that came with the computer.
6. Replace the optical drive cable.
7. Replace the optical drive.
8. Replace the logic board. 
						

							36 - eMac  Troubleshooting
Sound Out Symptom Charts
Sound Out
No sound from either internal or external speakers
1. Verify volume setting is correct in system preferences.
2. Verify the computer is not set to “mute”. Press the mute key on the Apple keyboard.
3. Reset parameter RAM. Press Command-Option-P-R during startup.
4. Test the computer with known-good headphones. Do you get sound? If yes, go on to step 4. If no, 
replace the main logic board.
5. Verify that the speaker cable is connected.
6. Replace the speaker assembly.
7. Replace the logic board.
No sound from the headphones
1. Verify the problem with known-good headphones.
2. Verify the computer is not set to “mute”. Press the mute key on the Apple keyboard.
3. Verify volume setting is correct in Mac OS X system preferences. If the preferences are set correctly, 
replace the logic board.
4. In Mac OS 9, check the Sound Control panel, Speakers tab. When headphones are connected, a 
headphone icon will be present. If the headphone jack is malfunctioning it may indicate that 
headphones are connected when none are connected. In this case, replace the logic board. 
						

							eMac  Troubleshooting - 37
Sound In Symptom Charts
Sound In
No sound is recorded
1. Check setup of the system preferences for the microphone.
2. Check that the microphone is picking up sound by testing the audio in iMovie. Click on the Audio button. 
Record something. The audio bar on the screen should indicate if the microphone is working. 
3. Check the microphone cable connection.
4. Replace the internal microphone.
5. Replace the main logic board. 
						

							38 - eMac  Troubleshooting
Error Beep(s) Symptom Charts
Error Beep(s)
Computer beeps at startup.
1. RAM expansion DIMMs for the eMac must be PC133 compliant and use SDRAM devices. If the user 
installs a DIMM that uses EDO or SGRAM devices, the computer will beep several times when the 
user attempts to restart the computer.
2. Refer to “Power-On Self Test” mentioned earlier in this chapter. 
						

							eMac  Troubleshooting - 39
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 cable/ jack.
9. Replace the modem.
10. Replace the logic board.