Commodore 1541 Maintenance Manual page 10

5-5. Head Alignment
5-5-1. General
This procedure aligns the read/write head to the physical tracks
on a floppy disk. A truly accurate alignment requires the use of
an alignment reference disk and a test program disk. The
procedure which follows allows the user to "get by" without such
software. However, the degree of success achieved will depend on
the accuracy of the disk which is used. Consequently, the
alignment may cause compatibility problems when using software
recorded on other drives or when using other drives to read disks
recorded on a drive aligned with this procedure. This problem may
be reduced by selecting a pre-recorded disk which has not been
written to since it was recorded at the factory. Although this
procedure is not 100% accurate, it will usually suffice for the
home user. For an accurate alignment of the drive unit, one of
the following alignment systems is recommended:
1. COMMODORE System
This system is available from:
Commodore Business Machines,Inc.
Customer Service Dept.
1200 Wilson Dr.
Westchester, Pa. 19380
Alignment disk
Test program disk
Service manual
970160-01
970154-01
9900445
Total=
$130
$
26
$
25
$181
The above items, plus a dual trace oscilloscope, are
required to align a disk drive using the COMMODORE
system.
2. Peltier Industries System
This system is available from:
Peltier Industries,Inc.
735 N. Doris
Wichita, Ks. 67212
Disk Alignment System (DAS-1541)
The system includes:
Alignment reference disk
Control disk
Instruction manual
Video detector
$39.95
The above items, plus a
3
1/2 digit, 100 Kohm digital
voltmeter, are required to accurately align a disk drive
using the Peltier Industries System.
Page 5-4