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NOTE
THE
FLOWCHARTS
ARE FOR INFORMATION
ONLY AND FOR WARRANTY PURPOSES ANY
FAULTY
DRIVE
MECHANISM MUST
BE
RETURNED
TO
AMSTRAD FOR
REPLACEMENT.
SERVICE
AGENTS
SHOULD NOT
ATTEMPT TO
REPAIR
THE MECHANISM.
SERVICE
AGENTS
SHOULD
NOTE THAT THE HARD
DISC UNITS
ARE THE
MOST
SOPHISTICATED
MECHANISMS AND SHOULD NEVER
BE
OPENED
IN
A
NORMAL
ENVIRONMENT.
IF
ANY ATTEMPTS
ARE
MADE
TO
OPEN
THE HARD
DISC
UNITTHE
GUARANTEE
IS
THEN
INVALIDATED
AND AMSTRAD
TAKES
NO
RESPONSIBILITY
TO
EXCHANGE
THE
DRIVE.
YOU SHOULD NOTE FURTHER
THAT
THERE ARE
TWO
TYPES OF
HARD
DISC UNITS
IN
USE
i.e.
XEBEC AND TANDON.
WHEN
ORDERING
THE
REPLACEMENT
UNITS
MAKE SURE
THAT THE
PART
NO.
IS
EITHER 171663/X
FOR XEBEC
DRIVE
OR
171663/T
FOR TANDON
DRIVE.
THIS
INFORMATION
APPLIES
ONLY TO THE 20MB
DRIVES.
AMSTRAD RESERVES
THE
RIGHT
TO
AMMEND
THE
CIRCUIT
OR CHANGE
THE
COMPONENTS
WITHOUT
PRIOR WARNING.
USE RP4 DIAGNOSTICS EXPANSION CARD
OR
DIAGNOSTIC
DISC
FOR
FAULT
FINDINGS.
FD-3
SERVICE INFORMATION
1.
Introduction
This section
is
for
the
maintenance
of
DFC222A.
1-1
General
The
floppy disk
drive
is
a high precision
equipment and
requires the following
jigs,
tools,
measuring
instruments,
and adjustments
when
repairing or
changing
parts.
2.
Special
Jigs,
Tools
and Measuring
Instruments
2-1
List
of
Special Jigs
and
Tools
CE
diskette
Blank
diskette
Test
pin
connector
Alignment
adjusting
jig
O
track adjusting
jig
2-2
List of
Measuring
Instruments
Oscilloscope
Brikon
Frequency
counter
2-3
CE
Diskette (Alignment
Diskette)
This diskette
is
used
for
the following
adjustments
and
inspection.
(1)
R/W
head
radial
position
(2)
R/W
head
azimuth
(3)
Index
position
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