4
0
3
-
4
)
F
D
-
5
5
F
(
D
o
u
b
l
e
s
i
d
e
d
,
9
6
t
p
i
)
M
ai
nte
na
nce
p
a
r
t
s
l
i
s
t
R
e
f
e
r
r
e
d
i
t
e
m
s
rH
1
tn
i
CN
1
m
i
CN
1
m
i
(N
m
i
co
m
i
tn
tn
i
uo
i
VO
1
tn
i
r-
i
tn
i
CD
1
in
O'
uo
i
4
-
5
-
1
0
4
-
5
-
1
2
0)
È
c
c
C
c
C
c
c
G
c
G
G
-H
-»H
•H
-H
•H
• H
-H
•H
-H
-H
HH
4
-
5
B
È
E
B
£
B
E
B
E
E
E
TD
0)
uo
O
»
i
O
i f )
;
tn
O
O
O
O
uo
O
Vu
m
CN
rH
rH
rH
co
•H
rH
rH
44
*H
c
3
0)
en
g
05
SJ
P C
ü
*0
P
H
0
a
4
-
»
en
en
05
0 4*
c
•
o c
B
05
*r|
en
05
05
eu
Vu
rH
es en
Ou
J=
ü
05
en
>i HD C-
4
-
5
C
Hd
ü
td o
en
0
<d
O
rH
0
4-5
rH
X
Æ
Vu
en
rH
1
l
1
|
l
en
C
rH
en
4-5
>1
0
eu
2
05
TD
4*
•H
4-5
B
Td
E
Ê
rd Vu
05
S en
0
id
IÜ
id
05
05
o
05
tn
B
(H
d)
rH
ü
Æ *
en
05
<
ü
S C
ü
rd
en
ü
O
rH
O
V4
n
(d Vu
C
tn
fv
UO
a
O .JC
C
rH
0
o
O
o
O
05
o
rH
0.4
-
5
rH
rH
rH
2
- c
X
03 0
o
X
X
X
r- o
rH
P C
B
CO
co
rH
vo
o
O
O
O
c
O
rH
O
XI
xl
O
O
c
0
o
O
O
O
o
O
O
o
r
r
tn
1
tn
1
o»
z
1
1
O
1
tn
1
CD
5
o
1
co
1
en
t
tn
H
c
1
I
CD
!
o
en
r*
vO
o
CO
en
uo
o
O
en
o
O
o
en
O
(N
o
r-
co
co
o
O'
00
co
en
Vu
vO
<n
CN
CN
ro
VO
VO
vo
CN
rH
k
D
VO
v o
<d vD
VO
tn
o
co
vO
vO
vO
co
co
VO
VO
vO
pu
c ri
r *
ro
r *
an
e n
(T i
tn
t n
en
e n
< n
r -
vo
VD
r*
r*
uo
uo
r ~
r-
rH
rH
rH
rH
rH
rH
rH
rH
rH
rH
rH
rH
rH
n
CN
CN
uo
UO
*—
>-r
■
—
U)
C
o
05
05
0)
<15
0)
44
•H
4 4
4-5
4 4
4 4
4 4
U
4-5
0
(
D
(
D
0
O
(0
Ou
2
2
2
Z
2
2
•H
*-
*■
U
_
_
—_
r-s
05
ü
m
VO
r r
vO
O
en
■
*
—'
w
w ’
c
O)
■
*
rd
Û
0)
0 )
<15
0 )
:05
c
4J
44
44
44
44
05
0
0
0
0
0
•P
Z
2
Z
Z
Z
i-
•H
•
Z
en
en
X
<
•
en
2
en
*U
en
4*
en
en
<
>i
>i
en
<
0
rH
—
•
<
c
Vu
0
en
en
Vu
> Vu
0 )
0
Vu
É-»
en
en
0)
0
-
0
rH
en
4
-
5
2
<
<
0)
en
4
-
5
en 4
-
>
SH
0
C
C
O
£
»d
O'
en
o
»
en
05
0
rH
Vu
<d *H
4-5
c
< E
tn
en
ü
44
05
05
C
VU
fH
•H
tn T3
C
M
>
^*1
P
CT'
05
Vu
Vu
05
<
td
o
Q
O
05
0)
•
en
(d
C
£
2
0
rH
0
o
2
VU
-Q
rH
en
4
-
5
o
•H
en
44 Td
4
-
5
rH
2
UH
en
U
a
rH
Q c
05
j<
44
44
<
<d TJ
a
05
4
-
5
E
*rU rH
n d
o
<
<
C
C
CH
rd
05
05
rH
a
rH
rü
td 2
2-
O
0
en
05
4
-
5 4
-
5
05
û en
0
• 05
V4
U
U
Vu
VU
en
Œ
C
/
} en
2
û
—
U
2
H
2
2
2
2
U
4009
Summary of Contents for FD-55 Series
Page 7: ...SECTION 3 THEORY OF OPERATION 300...
Page 8: ...3 1 CONSTRUCTION AND FUNCTION 3 1 1 General Block Diagram Fig 301 General block diagram 301...
Page 23: ...Fig 308 Control circuit block diagram 316...
Page 40: ...SECTION 4 MAINTENANCE 4000...
Page 56: ...J4 J12 Option J9 J5 Top view of the FDD Fig 401 Types of connectors 4016...
Page 95: ...Note Refer to item 4 2 1 as to handling of the set screw 4057...
Page 102: ...k Key in Cl SET TMAX L Confirm as in item j 4064...
Page 104: ...Notch B position TP6 voltage 0 5V Max LED indicator Fig 422 Check of file protect sensor 4066...
Page 125: ...k Eject the level disk and release the Invert and ADD modes of the oscilloscope 4087...
Page 136: ...Fig 431 Adjustment track alignment 4098...
Page 153: ...Fig 436 Adjustment of index sensor 4115...
Page 172: ...Fig 440 Replacement of head pad 4134...
Page 176: ...Plate Fig 441 CSS Ass y and shift lever position 4138...
Page 177: ...SECTION 5 DRAWINGS PARTS LIST 500...
Page 179: ...r Fig 501 External view No l 502...
Page 181: ...PCBA DD motor servo Fig 503 External view No 3...
Page 182: ...Fig 504 External view No 4 505...
Page 183: ...Partis nrnnber of the FDD Fig 505 Extemal view No 5 506...
Page 188: ...Fig 506 Mechanical section break down 511...
Page 199: ...PCBA DD MOTOR SERVO PARTS LOCATION Type S i 522A...
Page 200: ...PCBA DD TOR SERVO PARTS LOCATION Type TO 522B...
Page 201: ...PCBA DD MOTOR SERVO PARTS LOCATION Type G 522C...
Page 202: ...PCBA DD MOTOR SERVO PARTS LOCATION Type T 522D...
Page 204: ...523B PCBA DO MOTOR SERVO SCHEMATIC Type K...
Page 205: ...o 523C i 1 PACB DD HOTOR SERVO SCHEMATIC Type G...
Page 206: ...CV 5 3 3 H 2SV 523D PC DD M o t o r SERVO SCHEMATIC Type T...
Page 207: ...PCBA MFD CONTROL B PARTS LOCATION PCB ISSUE A G 524A...
Page 208: ......
Page 209: ...PCBA FRONT OPT PARTS LOCATION 525 PO I...
Page 210: ......
Page 211: ......
Page 212: ......
Page 213: ......
Page 214: ......
Page 215: ......
Page 216: ......