Mackie d8b v3, Service Manual

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A-44
PARTS
Motherboard Changes (see parts list on page A-46)
From November 1999, the Remote Power Supply and CPU unit have a new motherboard, Celeron proces-
sor, and DIMM memory modules. Changes in the motherboard format require changes to the CPU metal,
labels, and small hardware. The CMOS settings also change, see page 8 in the main part of the manual.
Models 090-126-xx, serial number prefix “BS11954” or higher (that is, all models after Nov 1999), use the
new 480-039-00 motherboard, and DC power cable, so you can replace with the same.
Models 090-096-xx, with serial number prefix “AW”, and models 090-126-xx, serial number prefix “BS11953”
or lower (i.e. before Nov ‘99), use the original 480-023-00 (CE-modded version is 080-113-00) motherboard.
If you have to replace the motherboard and no originals are available, then follow these instructions:
Parts required:
1.
qty. 1 329-087-03 “MICRO PROC CELERON 300MHZ”
2. qty. 1 480-016-00 “SDRAM DIMM 2MX64 4K 3.3V”
3. qty. 1 480-039-00 “OEM PCB MOTHER CB50-BX”
4. qty. 1 480-043-00 “OEM FAN MICROPROC”
5. qty. 1 550-391-00 “FAB PLATE CVR MOUSE D8PWR” cover plate for old PS/2 mouse hole
6. qty. 1 550-534-00 “PLATE CVR DB25” cover plate for old parallel port hole
7. qty. 3 700-011-00 “MCH 4-40X1/4 BTNSKT BLKOX” for attaching cover plates
7. qty. 3 706-059-00 “STDF NYL SNAPIN .5IN NO 6”
8. qty. 3 740-003-00 “TYRAP 8IN BLK”
9. qty. 1 840-375-00 “LBL KEYBOARD/CDATA D8” label with obsoleted port locations removed
Note: The new motherboard uses a different BIOS with different CMOS settings. New position of
headers on motherboard ends up leaving excess on ribbon cables, which can be bundled out of the
way using tie-wraps. There were originally holes cut in the chassis for the mouse and parallel port on
the old motherboard. The new motherboard uses a card-slot assembly with these ports on it. To
reduce EMI radiation, the unused port holes must be covered up. Some metal pieces have been
created for this purpose, and attach with screws.
NOTE: For models 090-096-xx, serial number prefix “AW”:
If the 040-281-00 DC power cable (the “umbilical cord” between the CPU and the console) needs
replacing on these old units, it will require major rework because the new cable (040-294-00) will not
fit these old chassis. If you want to try:
1.
qty. 1 040-294-00 “CBL DC PWR BRDSHLD D8PWR” New
2. qty. 1 329-087-03 “MICRO PROC CELERON 300MHZ” (can’t use old one in new motherboard)
3. qty. 1 480-064-00 “SDRAM 32MB 4MX64 DIMM 3V” (can’t use old memory in new mo’board)
4. qty. 1 480-039-00 “OEM PCB MOTHER CB50-BX”
5. qty. 1 480-043-00 “OEM FAN MICROPROC” use new fan
6. qty. 1 550-535-00 “FAB CRDRCK D8 CPU NO-PS2” card
7. qty. 1 550-542-00 “PNT TOP D8 CPSU”
8. qty. 1 550-543-00 “FAB CHASSIS D8 CPSU”
9. qty. 10 700-028-00 “SEMS 6-32X1/4 PHP BLKZC”
10. qty. 3 706-059-00 “STDF NYL SNAPIN .5IN NO 6”
11. qty. 3 740-003-00 “TYRAP 8IN BLK”
12. qty. 1 840-375-00 “LBL KEYBOARD/CDATA D8”
090-126-xx REV 12 continued
PART NO. DESCRIPTION REV QTY
740-001-00 TYRAP 3-1/4L A 10
740-003-00 TYRAP 8IN BLK A 1
740-007-01 GROMMET STRIP MEDIUM A AR
740-023-00 FLT CBL CLMP NYL LOCK 40C A 1
760-128-00 DUST COVER 25P DSUB FEM A 1
760-129-00 DUST COVER 25P DSUB MALE A 1
760-130-00 DUST CVR 15HD/9P DSUB SKT A 2