/pub/cbm/schematics/computers/plus4/manual/

Service Manual Model Plus 4 Computer Oct. 1984 PN-314001-04

Files

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title page
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table of contents
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specifications and overview
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case parts and accessories
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drawing of Plus/4
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parts layout
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parts list for circuit board 310163-01
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keyboard matrix, 7501 & 7360 pinouts
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schematic 310164(1 of 4)
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6551, PLA & 6529 pinouts and data
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schematic 310164(2 of 4)
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RAM pinout and sources, functional diagram
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schematic 310164(3 of 4)
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ROM pinouts
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schematic 310164(4 of 4)
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RF modulator layout and schematic #251844
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RF modulator layout and schematic #251311
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p4-15.gif 1998-06-03 73043
 
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troubleshooting aides
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line definitions
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engineering change - serial port, C-64, C-16, PLUS 4

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