C64 Hardware Reference and Repair Guide

Contents:

• Pictoral Fault Guide
• Integrated Circuits
  • MOS/CSG
    • 6510 CPU
    • 6526 CIA
    • 6567 VIC-II (NTSC)
    • 6569 VIC-II (PAL)
    • 6581 SID
    • 6582 SID
    • 8500 CPU
    • 8562 VIC-II (NTSC)
    • 8565 VIC-II (PAL)
    • 8580 SID
    • 8701
    • 251715 PLA/MMU
    • 251913 BASIC/KERNAL
    • 252535 PLA/MMU
    • 901225 CHARACTER
    • 901226 BASIC
    • 901227 KERNAL
    • 906114 PLA
  • Miscellaneous
    • 2114 COLOR RAM
    • 41464 RAM
    • 4164 RAM
• Mainboards
  • 326298
    • Components’ placement
  • KU14194HB
    • Components’ placement
  • 250407
    • Components’ placement
  • 250425
    • Components’ placement
  • 250441
    • Components’ placement
  • 250466
    • Components’ placement
  • 250469
    • Components’ placement
• Quick Reference
  • 250469 Address Lines
  • 250469 Data Lines
  • Dead Test

Schematics overview

PCB Assy	Schematics
326298	#326106
KU-14194HB	#251022
250407	#251138
250425, 250441	#251469
250466	#252278
250469	#252312

Components placement (excerpt)

PCB Assy	326298	KU-14194HB	250407	250245	250466	250469
Schematic Number	#326106	#251022	#251138	#251469	#252278	#252312
CIA 1	U1	U1	U1	U1		U1
CIA 2	U2	U2	U2	U2		U2
BASIC ROM	U3	U3	U3	U3		U4 BASIC & KERNAL
KERNAL ROM	U4	U4	U4	U4		U4 BASIC & KERNAL
CHARACTER ROM	U5	U5	U5	U5		U5
CPU	U7	U7	U7	U7		U6
RAM	U9, U10, U11, U12, U21, U22, U23, U24	U9, U10, U11, U12, U21, U22, U23, U24	U9, U10, U11, U12, U21, U22, U23, U24	U9, U10, U11, U12, U21, U22, U23, U24		U10, U11
PLA	U17	U17	U17	U17		U8
SID	U18	U18	U18	U19		U9
VIC	U19	U19	U19	U19		U7