Jump to content

Power Mac G4/Macintosh Server G4 Service Source

From RetroTechCollection

The Power Mac G4/Macintosh Server G4 Service Source is Apple's 293-page service manual for the tower Power Mac G4 models from the PCI Graphics to the QuickSilver 2002, and for the Macintosh Server G4 built on them. Its cover lists the Power Mac G4 (AGP Graphics, Gigabit Ethernet, Digital Audio, QuickSilver, QuickSilver 2002 and QuickSilver 2002ED), the Power Mac G4 (PCI Graphics) and the Macintosh Server G4 (PDF p. 1). The PDF is © 2002 Apple Computer and was produced from FrameMaker on 21 January 2002. Page numbers below are PDF pages.

It works at module level, as Apple's other Service Sources do: Basics, Take Apart, Troubleshooting, Upgrades and Exploded View chapters, with no schematics and no component values. Apple's own definition is that the computers are serviced "through module exchange and parts replacement" (p. 18).

Contents

[edit | edit source]
  • Basics (p. 2): Product Description (3), Identifying Versions of the Power Mac G4 (4–5), Standard Configurations (6–11), Configure-to-Order Options (12), Views (13), Internal Locator (14), Logic Boards for the AGP Graphics/Gigabit Ethernet (15), QuickSilvers/Digital Audio (16) and PCI Graphics (17), Strategy and Ordering (18–19), Warranty (20–21)
  • Take Apart (p. 22): Identifying Models (23–25), Tools (26), Opening the Computer (27), Video Card (29), Modem and Modem Filter (32–44), FireWire Board, PCI Graphics (45), Processor Fan, QuickSilvers (47), Processor Module for each family (49–68), Logic Board for each family (69–78), SDRAM DIMM (79), ATA and Ultra2 LVD SCSI hard drives (81–96), Ultra2 LVD SCSI Card (97), Carrier Support Plate (99), CD/DVD and Zip drives (102–125), Fan (126–134), Power Supply, QuickSilvers (135–143) and PCI/AGP Graphics/Gigabit Ethernet/Digital Audio (144–149), Speaker (150–155), Front Panel Board (156–161), Antenna (162), handles, panels, supports and I/O panel (165–197)
  • Troubleshooting (p. 198): Block Diagrams (199–202), Power-On Self Test (203–204), Logic Board Diagrams (205–207), Logic Board Troubleshooting: PMU reset, Cuda reset, PCI logic board reset and diagnostic LEDs (208–219), Power Supply Verification (220–229), SDRAM DIMMs (230–231), PCI Cards and Cleaning Procedure for Card Connectors (232–234), VGA-to-Macintosh Adapters and Cable Select Drives (235), Symptom Charts: Startup (237–242), Error Tones (243–245), Video (246–250), Sound (251–252), Hard Drive (253), CD/DVD Drives (254), Zip Drive (255–256), USB Devices (257–259), FireWire Devices (260), Network Problems (261), Modem (262–266)
  • Upgrades (p. 267): SDRAM DIMM (268–270), AirPort Card (271–274)
  • Exploded View (p. 275): exploded view, covers and screw matrix for the AGP Graphics (276–278), Gigabit Ethernet (279–281), Digital Audio (282–284), QuickSilver (285–287), QuickSilver 2002 (288–290) and PCI Graphics (291–293)

What it settles

[edit | edit source]
Power supply trickle voltages and test pins (pp. 220–229)
Model Logic board connector Trickle voltage present with the mains lead in and the machine off
PCI Graphics, AGP Graphics 20-pin +5 V at pin 9 (black lead on pin 16)
Gigabit Ethernet, Digital Audio 22-pin +28 V at pin 22 (black lead on pin 11)
QuickSilver, QuickSilver 2002 22-pin plus 4-pin P4 for the processor +25 V at pin 22 (black lead on pin 11)

With the machine running, Apple's procedure checks +3.3 V at pin 1, +5 V at pin 4 and +12 V at pin 10 of the same connector, and condemns the supply if a voltage is missing or its fan does not spin (pp. 227–229).

  • The power-on self test signals faults by beeps before the chime: one beep, no RAM detected; two, incompatible RAM types; three, no RAM bank passed; four, no good boot image in the boot ROM; five, processor not usable. On the PCI Graphics model four or five beeps mean a bad boot ROM checksum (pp. 203–204).
  • The PMU on every model except the PCI Graphics is reset by pressing S1 once, after checking the battery reads 3.3 to 3.7 V. Apple warns not to press it a second time, and that a crashed PMU cuts battery life "from about five years to about two days" (pp. 209–211). The PCI Graphics model has a Cuda chip with its own reset button beside the battery (p. 213).
  • The red LED on AGP-and-later logic boards shows standby power; do not fit or remove DIMMs or cards while it is lit (p. 211).
  • The PCI Graphics model needs a processor jumper block at J25 of the right colour for the processor; a wrong or missing block gives a machine that does not boot (pp. 212, 239).
  • DIMM types: PC-100 for the PCI, AGP and Gigabit Ethernet models (four slots) and PC-133 for the Digital Audio and QuickSilvers (three slots). Digital Audio machines "must use PC-133 DIMMs" (pp. 230–231).
  • Model identification: QuickSilvers have a silver case and a recessed front speaker; on the graphite models the sound ports run horizontally on the PCI Graphics, vertically on the AGP and Gigabit Ethernet, and sit in the upper half of the I/O panel on the Digital Audio, which also has four PCI slots instead of three. AGP Graphics boards have an internal FireWire connector at J9 and Gigabit Ethernet boards do not (pp. 4–5, 23–25).
  • The supply's voltage switch must be set correctly (115 V in North America) whenever a supply is replaced (pp. 143, 149).

What this manual does not contain

[edit | edit source]
  • No schematics, no board-level parts lists, no capacitor or other component values.
  • No rail tolerances: the power supply verification asks only for "approximately" +3.3, +5, +12 and the trickle voltage.
  • Nothing on the Power Mac G4 Cube or the Mirrored Drive Doors models, which have their own manuals (Power Mac G4 Cube Service Source, Power Mac G4 (Mirrored Drive Doors) Service Source).
  • The Digital Audio exploded view lists only the 466 and 533 MHz processor modules (p. 282).

Pages that cite this document

[edit | edit source]

Download: Power Mac G4 and Macintosh Server G4 Service Source (2002).pdf (11 MB)

Retrieved from "https://wiki.retrotechcollection.com/index.php?title=Power_Mac_G4/Macintosh_Server_G4_Service_Source&oldid=22361"