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

c116-251239-1.gif

Commodore 116 schematic 251239, sheet 1 of 3. Expansion port, cassette port, audio/video connector, RF modulator, power supply, clock circuitry.

c116-251239-2.gif

Commodore 116 schematic 251239, sheet 2 of 3. TED, processor, joysticks, keyboard, ROM, RAM.

c116-251239-3.gif

Commodore 116 schematic 251239, sheet 3 of 3. PLA and address decoding.

c16-251788-1of3-left.gif

c16-251788-1of3-right.gif

Commodore 16 schematic 251788, sheet 1 of 3. Expansion port, cassette port, audio/video connector, RF modulator, power supply, clock circuitry.

c16-251788-2of3-left.gif

c16-251788-2of3-right.gif

Commodore 16 schematic 251788, sheet 2 of 3. TED, processor, joysticks, keyboard, ROM, RAM.

c16-251788-3of3-left.gif

c16-251788-3of3-right.gif

Commodore 16 schematic 251788, sheet 3 of 3. PLA and address decoding.

c16-251788-title.gif

Commodore 16 schematic 251788, title page.

connectors-1.jpg

Commodore plus/4 and C16 connectors. User port (plus/4 only) and cartridge port. Scanned from a Hungarian magazine.

connectors-2.jpg

Commodore plus/4 and C16 connectors, second part.

p4-left.jpg

Commodore plus/4 schematic sheet, left part. This is a very high-resolution scan taken from a Hungarian magazine.

p4-right.jpg

Commodore plus/4 schematic sheet, right part. This is a very high-resolution scan taken from a Hungarian magazine.

plus4-310164-1of4.gif

plus4-310164-2of4.gif

plus4-310164-3of4.gif

plus4-310164-4of4.gif

Commodore plus/4 schematic 310164 from the German plus/4 user's guide.

plus4-troubleshooting-1of4.gif

plus4-troubleshooting-2of4.gif

plus4-troubleshooting-3of4.gif

plus4-troubleshooting-4of4.gif

Commodore Techtopics 1984 issue 6. Troubleshooting the plus/4.

powersupply.gif

Commodore plus/4 power supply

timing.gif

Commodore plus/4 timing (Phi 0 and Phi 2 signals in the single clock and twice clock modes)

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