Hitachi D-900 Serviceanleitung Seite 24

Q5i
Sil
e_ | FF PULSE
GENE RATES
(FF)
-_ [REW PULSE
ins GENERATES
Q53
$13
- _ _ | PLAY PULSE
inte GENERATES
Si4
(STOP)
S2l
C)
(AUTO STOP) coo
C)
(EJECT?!
Q54
STOP PULSE
GENERATES
Q55
Si5
2 IPAUSE PULSE
GENERATES
(PAUSE)
BLOCK DIAGRAM (CONTROL SECTION)
re D69—7I
y) ICH: I
—-~~~q---4 FF
Ic5 ic9 [— a | Q59 aco SOLENOID
FF | SOLENOID ="
——
|
x
Tr IC8 ICO Ics |
ee
ae
FA
GATE FOR
VA |
[ l Ir FF RESET l
| (rere | ereaneei | aera |
|
| (y) REW
ecm REW
iIc5 | ICll | Q6l oe SOLENOID
VA 5
:
SWITCHING
P>L><|
| R ll iClO Ics
| FA Ht] GATE FOR Vz
ees
|
A rl REW RESET
vA :
ee |
| |
| | a
cae PLAY
tes | | Ici Q63 Q64 SOLENOID
SOLENOIO 7
4
shee co Bae
eTGATE FOR IC3-°4
TTREW RESET
OPLAY SIGNAL
ICi:D52
icé6
PLAYSIGNAL
GATE
IC5
ZL
ai
PLAY. REC.
SIGNAL
GENERATES
RESET PULSE FF REW
[ ] GENERATES p
OPAUSE SIGNAL
REC, GATE
SIGNAL
l'] GENERATES
Ic5 IC7
ae | eT ek Ra REC. RESET PULSE REC.RESET PULSE FF REW STOP
vA GENERAT
a
IC2 IC2 ac
ENERATES
GENERATES
al PULSE
(REC)
top
:
pan
ies
GENERATES [7 LREC. GATE MH) FLip—FLop
OREC. SIGNAL
PREVENTION
S D59
064
VOLTAGE
RECTIFIER
Q68-: D6I
IC3°4
TO REW FLIP —FLOP
Oo O—m STOP PULSE
$20 GENERATING
Dé65 (MEMORY)
RECTIFIER OTo FF/REW solenoid
D066 :67
DOUBLE
MARK INDICATES LOGICAL
VALUE
CONVERSION CIRCUIT
HIGE /LOW
VOLTAGE
SELECTOR
ac .° eee