Apple power mac g4 agp graphics User Manual

 
 TroubleshootingGeneral/SDRAM DIMMs -  3 3 
Power Mac G4 (all models except PCI Graphics) 
Four slots on the Power Mac G4 (AGP Graphics/Gigabit Ethernet) 
logic boards accept 64, 128, 256, or 512 MB DIMMs. Three slots 
on the Power Mac G4 (Digital Audio/QuickSilver/QuickSilver 
2002) board accept 64, 128, 256, or 512 MB DIMMs. Any 256 
MB DIMMs must be 128 or 256 Mbit technology; 512 MB DIMMs 
must be 256 Mbit technology. 
Power Macintosh G4 (PCI Graphics) 
Four slots on the Power Macintosh G4 (PCI...

 
 TroubleshootingGeneral/ PCI Cards -  3 4 
PCI Cards 
Video Card Installation 
Power Mac G4 computers require an I/O video card that moves 
video from the main logic board. The card is installed in slot #1 on 
the logic board, as illustrated below. Slot #1 on the Power 
Macintosh G4 (PCI Graphics) is a PCI slot; slot #1 on the other 
models of Power Mac G4 is an AGP slot. Refer to the Symptom 
Charts for details on troubleshooting video cards. 

 
 TroubleshootingGeneral/ PCI Cards -  3 5 
Power Mac G4 (QuickSilvers/Digital Audio)
Power Mac G4 (PCI Graphics/AGP Graphics/Gigabit Ethernet)
Slots #2-5Slot #1
Slot #1Slots #4  #3  #2 

 
 TroubleshootingGeneral/ PCI Cards -  3 6 
Cleaning Procedure for Card Connectors 
It is possible for residue to build up on the gold edge connector 
pins on some cards, which could cause a variety of symptoms. 
If you are having problems with a card, inspect the connector pins 
with a magnifying glass. If you find residue, use a pencil eraser or 
the chemical cleaner ÒstabilantÓ (see TIL article 10468) to 
gently clean the pins. Remember, never handle the cards by the 
gold connectors. 

 
 TroubleshootingGeneral/VGA-to-Macintosh Adapters -  3 7 
VGA-to-Macintosh Adapters 
To avoid ÒNo videoÓ or ÒBlack screenÓ situations, do not use two 
VGA-to-Macintosh adapters (one on each end) on the video cable 
that connects a Power Mac G4 computer to a monitor with a 
captive VGA connector.
If you need to connect a VGA monitor, connect it in one of the 
following ways:
¥ VGA monitor --> to a VGA cable with VGA connectors on both 
ends --> to the video card on the Power Mac G4
¥ VGA monitor --> to...

 
 Troubleshooting Symptom Charts/How to Use the Symptom Charts  -   3 8 
Symptom Charts 
How to Use the Symptom Charts 
The Symptom Charts included in this chapter will help you 
diagnose specific symptoms related to the product. Because cures 
are listed on the charts in the order of most likely solution, try 
the cures in the order presented. Verify whether or not the 
product continues to exhibit the symptom. If the symptom 
persists, try the next cure.  
Note: 
 If you have replaced a module,...

 
 Troubleshooting Symptom Charts/Startup -  3 9 
Startup 
System is completely 
dead (no fan 
movement and power-
on button is not lit)1 Verify the power outlet is good. 
2 Replace the power cord. 
3 Make sure the voltage switch on the back of the power supply 
is set to the correct voltage.
4 Check for trickle voltage on the power supply connector. 
Refer to ÒPower Supply VerificationÓ in this chapter. If 
verification fails, replace the power supply.
5 Disconnect external devices, including the...

 
 Troubleshooting Symptom Charts/Startup -  4 0 
Memory error 
message appears on 
the screen1 Reseat the DIMMs. 
2 Verify that only SDRAM DIMMs are installed. Use PC-100 
DIMMs on Power Mac G4 (PCI/AGP/Gigabit Ethernet) and 
PC-133 DIMMs on Power Mac G4 (Digital Audio/
QuickSilvers).
3 Run Apple Hardware Test. If the test finds bad memory, 
replace the DIMMs one at a time and test until all bad DIMMs 
are replaced with known-good modules.
Flashing question 
mark appears on the 
screen1 Start up from...

 
 Troubleshooting Symptom Charts/Startup -  4 1
Computer begins to 
power up, the fan and 
hard drive are 
spinning, the power 
LED is lit, but there 
is no startup chime or 
video1 Reset the logic board.
¥ Power Mac G4 (AGP Graphics): Refer to ÒResetting the 
PMU on the Logic BoardÓ in this chapter.
¥ Power Macintosh G4 (PCI Graphics): Refer to ÒResetting 
the PCI Logic BoardÓ in this chapter. 
2 Power Macintosh G4 (PCI Graphics): Check the jumper block 
at J25. Make sure the jumper is the correct...

 Troubleshooting Symptom Charts/Startup -  4 2
System shuts down 
intermittently1 Make sure the power cord is plugged in firmly.
2 Check that the power source is turned on and the correct 
voltage is present.
3 Replace the power cord.
4 Make sure the air vents are clear. 
5 Check that the fan cable is connected and the fan is 
operational. 
6 Check that the heatsink is properly attached to the processor.
7 Power Macintosh G4 (PCI Graphics): Reset the Cuda chip. See 
ÒResetting the Cuda ChipÓ in this...