VIC20 computer,
early version, revision E
VIC20 computer,
later cost reduced (CR) versions
C64 this diagram
is typical, but there are several versions. Included are pics of the computer
saver, heat sinks, etc.
C64C computer,
cost reduced version of the C64.
SX64 portable
computer & drive. (includes modification to install computer reset
without drilling cabinet)
C128 computer
C128DCR computer,
USA version (metal case), internal 1571, internal power supply.
1541
(aka 1540) disk drive, 5.25", early version, long board (example: 1540008),
Alps (push down) mechanism
1541
disk drive, 5.25", (boards 1540049, 50, etc.), mostly Alps mechanism.
1541
(aka 1542) disk drive, 5.25", later version, (boards 251777, 251830, etc.),
mostly Newtronics mechanism.
1541C
(aka 1541B) disk drive, 5.25", short board, Newtronics mechanism.
1541-II
disk drive, 5.25", external power supply.
1571
5.25" disk drive, double sided, GCR and MFM encoding, internal power supply.
1581 3.5" disk
drive, double sided, MFM encoding, external power supply.
FSD-1 single
5.25" floppy drive (1541 clone), internal power supply. I don't have schematic.
MSD-SD1 (single)
and SD2 (dual) 5.25" single sided floppy drive, internal power supply.
1701 monitor -
NTSC - (JVC chassis, like the 1702 but with large, heavy power transformer)
1702 monitor
- NTSC - hand-drawn schematic of JVC CM42782-001 (chassis different than
the 1701).
1802 monitor -
NTSC (Daewoo CM-120)
1802-clone
monitor - NTSC (Goldstar CMC-141-1)
1080 Toshiba monitor (don't have schematic, but my notes may help in troubleshooting) .
1084 PAL1
monitor - European PAL and RGBI, with SCART connector
1084 PAL2
monitor - another European PAL and RGBI, with SCART connector, Philips
CM8833 chassis.
1084P (aka 1084S-P)
monitor. Two similar chassis shown. NTSC and RGBI (USA version by Philips).
1084D and
S-D monitor - NTSC video and RGBI (USA version made by Daewoo).
1902 (non-A) monitor
(don't have schematic, but the CBM 2002 chassis is a close match for NTSC
models).
1902A monitor
- NTSC video and RGBI (USA version, similar to a 1084).
1950 monitor, VGA for IBM type PCs.
2002 monitor - NTSC video, digital and analog RGB for Amiga. (use this for the 1902 non-A versions).
Adaptor
to allow 2364 (Kernal ROM in C64) to be read as a standard 2764 in an EPROM
burner.
Adaptor
to allow 28 pin standard 2764 EPROM to fit a 24 pin PROM socket such as
the Kernal in a C64.
Adaptor
to allow a 27128 EPROM to fit in C64 Kernal socket. Includes a switch to
change "banks".
Adaptor
to allow a 27256 EPROM to fit in C128 Kernal socket. Includes a switch
to change "banks".
Adaptor
to allow a 27512 EPROM to fit in a C128DCR Kernal socket. Includes switch
to change "banks".
Commodore repair articles can be found here
and on my home website.
For help in troubleshooting, email: rcarlsen at tds dot net
or rrcc at u dot washington dot edu
B-2-56 is a link to my collection of photos of my military experience in Europe from 1965 to 1967.
