128K Macintosh logic board infos

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dankephoto's picture
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Joined: Dec 20 2003
Posts: 1900

I just inventoried some of my Macintosh logic boards of production details . . .

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dankephoto's picture
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Joined: Dec 20 2003
Posts: 1900
the details . . .

And here's the three I looked at, plus three later models:

Original 128K Macintosh model.

All have the Apple part numbers 630-0101 and 820-0086-C

in ink, all have (c) 1983 and a number '6522'

all have MC68000G8 cpus, with differing production dates (of course)

OK, here's what's different amongst my boards:
ram = 128K
LB01010400000715
inked 054U
ROMs (c) '83 hi/lo - 342-0220-A, 342-0221-A
CPU date 8406

ram = 512K
LB084000004013
inked 054J
ROMs (c) '83-'86 hi/lo - 342-0341-C, 342-0342-C (Plus ROMs)
cpu date 8401

ram = 512K
LB041400012976
inked 304J
ROMs (c) '84 hi/lo - 342-0220-B, 342-0221-B
cpu date 8438

later models, just for comparison

Macintosh 128K, ram = 128K
L50115072
inked 125J
(c) '83-'84
cpu MC68000P8, date 8504
ROMs (c) '84 hi/lo - 342-0220-B, 342-0221-B

Macintosh 512K, ram = 512K
L50258426
inked 455J
(c) '83-'84
cpu ?? EF68000P8 dated 8541
ROMs - unmarked EEPROMs, but IIRC they are Plus ROMs

Plus (platinum)
L70145882
cpu MC68000P8, date 8734
ROMs (c) '83-'86 hi/lo - 342-0341-C, 342-0342-C

dan k

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JDW's picture
JDW
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Joined: Mar 18 2006
Posts: 152
Another 128k board for comparison

Early Production 128K Macintosh logic board.

Apple part number: 630-0101 (no revision letter in the white box)
Has "(c) 1983" and "6522" silked on the circuit board.

Other details...

RAM: 128K (all chips have picture of the apple logo stamped on them)

CPU:
(C)APPLE 83
338-0001
68000-8
R 3L 1 JAPAN

ROM HI:
8343 G
C19728
342-0220-A
(C) APPLE 83

ROM LO:
8343 G
C19729
342-0221-A
(C) APPLE 83

Here is a hi-rez photo of my 128k logic board.