Table of Contents

THE 1541 FIXER

BY BILL DUN

Note: this information is presented without warantee or gaurantee to it's reliability or effectiveness. Nor does it imply that these methods will work or are the only ones possible.

Reprinted from the Commodore Club of Rockford Newsletter - March 1993

QUICK CHART

CodeCheck TheseCodeCheck These
A 6502 E LM311
B 6522 F 582
C 32530201 G 9602
D 90122905 H 32557202
CHECK THESE SYMPTOM
650265223253020190122905LM311582960232557202
A C D ERROR LED STATUS ON ALL THE TIME
B DRIVE MOTOR RUNS ALL THE TIME AND LED STAYS ON
A D DRIVE MOTOR RUNS ALL THE TIME AND LED STAYS OFF
B AFTER WARM UP, MOTOR RUNS ALL THE TIME
D E DOES NOT LOAD WHEN HOT OR LED FLASHES 3 TIMES
D SEARCHES WITH LED FLASHING CONTINUOUSLY
C SEARCHING WITH NO RED LED
F G H DRIVE FAILS TO READ
B H FAILS TO FORMAT DISK
A B STEPPER MOTOR DOES NOT STEP FORWARD
A WILL NOT SAVE WHEN DRIVE HEATS UP
D LIGHTS STAY ON, MOTOR RUNS CONTINUOUSLY

OTHER SYMPTOMS

NO LED'S ON POWER UP

FLASHES ON POWER UP

DRIVE MOTOR RUNS WITH NO RED OR GREEN LED'S

LOADS PROGRAMS WITH RED LED FLASHING

LOADING INTERMITTENT

MESSAGE OF "FILE NOT FOUND"

DRIVE SPEED IS NOT STABLE

LOCKS-UP WHEN LOADING

FAILS THE PERFORMANCE TEST & DISPLAYS ERROR 21

FAILS THE PERFORMANCE TEST & DISPLAYS ERROR 27

PASSES PERFORMANCE TEST TO TRACK 18 DISPLAYS ERROR 21

PASSES PERFORMANCE TEST BUT WILL NOT LOAD PROGRAMS

FLASHING LIGHT ON & OFF DURING LOADING