Commodore 1540/1541 Service Manual: Contents

CONTENTS

SPECIFICATIONS
BLOCK DIAGRAM
CARE AND MAINTENANCE
OVERVIEW
FLASH CODE
CIRCUIT THEORY
- POWER SUPPLY
- RESET LOGIC
- CLOCK CIRCUITS
- MICROPROCESSOR CONTROL OF RAM AND ROM
- SERIAL INTERFACE
- MICROPROCESSOR R/W AND MOTOR CONTROL LOGIC
- READ/WRITE CONTROL LOGIC
- READ AMPLIFIER
- WRITE AMPLIFIER
- POWER UP/DOWN WRITE PROTECTION
- STEPPER MOTOR CONTROL CIRCUITS
- SPINDLE MOTOR CONTROL CIRCUITS
TROUBLESHOOTING GUIDE
RESISTANCE CHECKS
CASEWORK/ACCESSORY PARTS LIST
MODEL INDENTIFICATION
DEVICE NUMBER CHANGE
PC ASSEMBLY 1540001
- BOARD LAYOUT
- PARTS LIST
- PIN CONFIGURATIONS
- SCHEMATIC
PC ASSEMBLY 1540048
- BOARD LAYOUT
- PARTS LIST
- UPGRADE NOTES
- SCHEMATIC
PC ASSEMBLY 250442, 250446
- BOARD LAYOUT
- PARTS LIST
- IC PINOUTS AND INTERNAL DIAGRAMS
- SCHEMATIC
POWER SUPPLY ASSEMBLY 154002
ALPS DRIVE ASSEMBLY
NEWTRONICS DRIVE ASSEMBLY
- PARTS LIST
- WIRING DIAGRAM AND LAYOUT
- MOTOR CONTROL PCB SCHEMATIC