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MVC-FD100/FD100H/FD200/FD200H
FC-89 (FDD INTERFACE) SCHEMATIC DIAGRAM • See page 4-43 for FC-89 printed wiring board. • See page 4-55 for waveform.
2
1
FC-89 BOARD (7/10)
A
FDD INTERFACE(FDC BLOCK 1/2)
XX MARK:NO MOUNT
NO MARK:REC/PB MODE
INDEX
50
TRACK_00
FC-89 BOARD
(9/10)
FDDRF_B
B
FDDRF_A
51
FC-89 BOARD (10/10)
FDD_P_5V
52
DISK_IN
FC-89 BOARD (9/10)
41
FC-89 BOARD (5/10)
FDD_LED_IN
C
19P
CN701
DISK
FPTS
FDD_GND
FDD_GND
CLOCK
D
FDD_LED_IN
INDEX
FDD_5V
FDD_5V
FDD_GND(E)
TOS1(C)
STBY(K)
E
FDD_5V(A)
F
FLOPPY
DISK
DRIVE
UNIT
G
CN702
5P
SHIELD
ERASE
R/W_B
R/W_A
H
COMMON
CN703
5P
SHIELD
ERASE
COMMON
R/W_A
R/W_B
I
J
SIGNAL PATH
VIDEO SIGNAL
Y/CHROMA
REC
PB
K
05
FC-89 (7/10)
3
4
5
R795
XX
Q705
XX
19
DISK
18
FPTS
HDS
17
HDS
16
FDD_GND
15
14
CLOCK
13
MC
MC
12
INDEX
11
10
FDD_5V
9
FDD_GND(E)
8
TOSI(C)
7
STBY(K)
6
R727
220
FDD_5V(A)
5
PNB
PNB
4
PNA
PNA
3
PB
PB
2
PA
PA
1
R732
33k
0.5%
1
R733
220k
0.5%
2
R734
680
0.5%
3
R735
1800
4
R731
C705
XX
5
5600
0.5%
C714
XX
1800
R737
5
1500
4
R738
R736
R739
680
3
22k
R742
0.5%
0.5%
2
5600
R740
0.5%
1500
1
0.5%
Q706
XX
R741
D702
22k
MA8075-TX
0.5%
C715
XX
C716
10u
10V
R743
2.2
R793
LND701
0
FB701
FDD_REG_GND
LND702
FDD_REG_GND
4-23
6
7
8
9
R725
XX
R726
0
R763
2200
R792
22k
R768
R728
0
100k
C722
C718
0.1u
R794
XX
1500
R791
XX
R755
R760
XX
XX
0.5%
R756
R797
XX
XX
0.5%
5.1
5
0
5
39
38
37
36
35
34
33
32
31
30
29
28
27
0.2
MONB
OSCO
18
0.2
MONA
OSCI
0
RF0
SVCC
AGND
PNA
4.9
ED0
PA
IC704
0.5%
5
RW1B
SGND
5
STEPPING MOTOR DRIVE
RW1A
PNB
5
IC704
ED1
PB
TB6055AF(EL)
5
RW0B
SVCC
5
RW0A
STBY
0.5%
5
AVCC
T0SI
0.5%
5
XRDYO
WCH
5
WCL
XHDO
1
2
3
4
5
6
7
8
9
10 11 12 13
0.3
0
3.1
10
11
12
R729
33k
R730
100k
C723
10V
33u
R746
XX
C720
C719
33u
XX
10V
10V
R762
0
R751
0
X702
R752
33k
4MHz
0.5%
2.1
5
R753
R796
R754
0
22k
2.5
XX
0.5%
2.4
5.1
0
0
0.4
0.4
5.1
4.4
R761
1k
5
3.1
0.2
4-24
13
14
15
Q701-703
FDD 4.9V REG
Q701
2SB1581-T1
5.1
8.3
BL_UNREG
R747
47k
0
7.7
7.3
Q702
2SB1462J-
53
QR(K8).SO
FC-89 BOARD
5.2
7.3
(10/10)
Q703
R748
HN1C01FU-TE85R
3
6
33k
0.5%
2
2
FDD_4.9V
4
1
R749
1.5
R750
22k
0.5%
4700
REG_GND
1
2
3
4
5
6
65
FC-89 BOARD
(8/10)
7
8
9
10
11
12
13
14
15
16
17
GND
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