Apple emac ati usb2 2005 Servicehandbuch

Seite von 206
 
2 - 
 
eMac ATI Graphics/ USB 2.0/2005 Basics
 Overview
 
What’s New (April 2004)
 
eMac (USB 2.0)
 
Apple announced a revision to the eMac product family. Powered by G4 processors 
running at up to 1.25GHz, with a system bus of 167 MHz, the new eMac models come 
with Mac OS X v.10.3 and include Apple's iLife application suite, providing iMovie, iPhoto, 
and iTunes as a standard software configuration. 
The changes include the following:
• No-optical drive configuration: This computer is available in a low-cost no-optical drive 
configuration
• Mac OS X 10.3
• Modem: except for the educational configuration, the eMac (USB 2.0) has an internal, 
fax modem (soft modem). The modem appears to the system as a serial port that 
responds to AT commands.
• Bluetooth (optional): Fully integrated Bluetooth is available as a build-to-order option
• 922-6201 Bluetooth board
• 922-6402 Bluetooth antenna
• USB 2.0 ports: This computer has three USB 2.0 ports
• Revised logic boards
• 661-3279 1 GHz board: EEE code QDJ or QHL.
• 661-3280 1.25 GHz board: EEE code QDK or QHM
• New optical drives:
• 661-3281, CD-ROM, 32x
• 661-3282, Combo, 32x
• 661-3283, SuperDrive, 8x
• New hard drives:
• 661-3209, 80 GB
• 661-3266, 160 GB (CTO)
• Memory, 333 MHz DDR
• 661-3322, 512 MB
The RAM expansion modules used in the eMac (USB 2.0) computers are 184-pin 
SDRAM DIMMs (dual inline memory modules) that are 2.5 V, unbuffered, 8-byte, 
non-parity, and PC2700 compliant. The speed of the SDRAM devices must be rated 
at 167 MHz (7 ns) or faster. Refer to Kbase article 86718 for more information.
 
Important:
 
  The memory expansion cards (DIMMs) must use SDRAM devices as 
specified above. DIMMs for previous models of eMac or DIMMs that use EDO or 
SGRAM devices will not work. If they are installed, the computer will beep, and the 
power light will flash several times when you turn on the computer. This indicates that 
the computer cannot find any useable RAM.
• Faraday Shield
• 922-6407
• Optical Plate (used on the no-optical drive configuration only)
• 922-6408