NEC FD1165 Maintenance Manual page 95

+5F
READ DATA
TWO SIDED
DISK CHANGE
READY
FilE UNSAFE
WRITE PROTECT
I
TRACK 00
; DlKI
! (2)
20 IIIDEX
5C
I FU
HlDO
'(2)
I:~NO
'--------_t>
I:ll
I~~OO
'-----------l~,1~4~'0
SN7406N
1\ 10
11
I:~FO
' - - . . , . . . _ - - - - - - - - - - 1 > ' RGn
1(4)
L--
-l'>
1:"1
2E
SN74LS04N
'-- I~ 2
lG
9 SM74J811
RD r,----.
Ron
(4)
r.:;---:-------t-----------------------t>
!RIXl
'(2)
t-
~12:...1SN74J8N
13
\ O - - - - - - - - - - - - l
+SF
I
48
VDO
jlD525020
21
DSXO
37
IDXl
Z7
HlDO
Jil
2501
29
FLRO
36
FUSl
SSlO RDYl
11 J4
DIRO
WPTI
22 32
WGTO ,TKOl
18 31
STPO DCGl
2.J
WDTO
1\
PRTO RIXI
J8
12
TK01 RRYl
19
6
4
7
IXIO HlOO
IXOO WEND
45
3
DOPO WSLt
412
REIIO .EGOO
48
ClKI EG10
41
PlZl
WDFl 25
DlHD
RGTl
43
PRIO
SWFl
J9
DRHO PH10
13
DLSO PH20
14
DRlO PHJO
15
SDHl
PH40
16
MlNl DlKO
FLSl
24
DSXl
(2)
3H
+SF
~WGTD
!
""-(!l
+SF
RM!i' 10K
6
...----11--------1----1 ....
> ~~lO
L----'----b USED
I2l
SC
r-'
1
I
2
1
.-L-
110 USE
- . , • I
L __I
+SF
lson
lC
74LSl4PC
t--+-I-------~=-I .;:~-----------------!9!...1
8
IC
74LSI4PC
t--+-~-+----~~ ..;;»- ...- ~1~1
10
1---+---411---+-----=-1
~"";""
....[>
lWCl
(4)
DIRECTION
PRTD
(31
TROl
(3)
IX10
(3)
IXOO
(3)
MINl
(3)
REIIOI
(2)
ClKl
(2)
PIZl
(2)
III USE
STEP
HEAD lOAD
WRITE GATE
WRITE DATA
SIDE SELECT
DRIVE SELECT 1
DRIVE SELECT 3
DRIVE SELECT 2
DRIVE SELECT 4
HEAD CURRENT SW
FilE UNSAFE RESET
134-11'0390- 50 1- 0
FDl165 G9NYF PCB (Sheet 1 of 4)
7-3/4