Editing IMac G3 Service Source (tray-loading)

{{DISPLAYTITLE:iMac G3 Service Source (tray-loading)}}
Apple's '''iMac''' Service Source covers the tray-loading iMac G3: the 233 MHz Bondi Blue models (M6709LL/A and /B) and the 266 and 333 MHz five-colour models. This copy is a 379-page PDF. Its last 72 pages are Apple's 1998 iMac ''Emergency Handbook'', a user troubleshooting booklet appended from PDF p. 308. The newest item in its Hot Issues chapter is a CD-ROM drive released in July 1999. Page numbers below are PDF pages.<ref name="ss">Apple Computer, ''iMac'' Service Source (tray-loading models), [[:File:iMac G3 tray-loading Service Source.pdf]].</ref>

== Contents ==
<templatestyles src="Template:StyledTable/styles.css" />
{| class="wikitable styled-table" style="width:100%; text-align:left;"
! Chapter !! Sections (PDF pages)
|-
| Hot Issues || Mixed memory types (4-5), HFS Plus drives (6), forcing a restart (7), external displays (8), iMac updates (9-10), CD-ROM door not latching (11), revision and version part numbers (12), Version 2 service parts (13), new CD-ROM drive of July 1999 (14-15)
|-
| Basics || Product description and standard configurations (18-20), model comparison (21-25), new technologies, modem, CD-ROM, power filter board, A/V interconnect board, power supply board fuse, graphics, sound, video, backside cache, memory (26-66), views and logic board diagram (67-74), ordering and warranty (75-79)
|-
| Troubleshooting || Block diagram, power flow, testing for power (84-91), Cuda chip (92), resetting the logic board (93), power-on self test (94), video and sound flow (95-96), symptom charts (99-124)
|-
| Take Apart || Lower access cover, logic board/mass storage chassis, logic board, processor card, modem, I/O panel, SDRAM, CD-ROM, hard drive, power filter board, fan, A/V interconnect board, housings and bezels, speakers, IrDA board, headphone/power board, analog/video board (original and Ver. 2), power supply board (original and Ver. 2), CRT, microphone, I/O door, CRT frame (126-256)
|-
| Upgrades || 258-268, and VRAM (296)
|-
| Adjustments || Adjustment tools and light meter set-up (270-276), geometry (277-278), video (279), cutoff (280-293), focus (294-295)
|-
| Exploded View || 298-303
|-
| Additional Procedures || Resetting the CD-ROM eject mechanism (305-307)
|-
| Emergency Handbook || 308-379
|}

== What it settles ==
* Error beeps at the power-on self test (p. 94): one, no RAM; two, EDO memory fitted; three, no RAM bank passed; four or five, bad boot ROM on the processor module.
* Testing for power (pp. 86-91): +5 V trickle at the positive lead of C28 on the logic board with the machine plugged in and off; +5 V on the power supply to power filter cable; +5 V at pin 24 of the original power supply board (661-2081) or pin 3 of the Version 2 board (661-2167); continuity of fuse F901.
* Version 2 parts are not interchangeable with the originals: analog/video board 661-2166 and power supply board 661-2167 among them (p. 13).
* Memory (pp. 62-65): two SO-DIMM slots on the processor card, 144-pin SDRAM; 128 MB maximum on the 233 MHz /A model and 256 MB on the later ones; the lower slot takes modules only 1.0 to 1.5 in tall; 2 MB SGRAM on the logic board plus one SGRAM SO-DIMM slot to 6 MB.

== What this manual does not contain ==
* No schematics and no component values for the analogue, power supply or logic boards.
* No coverage of the slot-loading iMac; see [[IMac G3 Service Source (Summer 2001)|iMac G3 Service Source (Summer 2001)]].

== Pages that cite this document ==
* [[IMac G3|iMac G3]], [[IMac G3 Troubleshooting|iMac G3 Troubleshooting]], [[IMac G3 General Maintenance|iMac G3 General Maintenance]], [[IMac G3 Capacitor Replacement Guide|iMac G3 Capacitor Replacement Guide]]

<pdf width="800" height="500">File:iMac G3 tray-loading Service Source.pdf</pdf>

Download: [[:File:iMac G3 tray-loading Service Source.pdf|iMac G3 tray-loading Service Source.pdf]] (9.5 MB)

== References ==
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[[Category:Service Manuals]]
[[Category:Apple Vintage Computers]]
[[Category:Apple Service Source]]