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Technics SL-PD349 Service Manual page 25

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'SL-PD687
=a-
* 1C401 (UPD78044A058): System control & FL drive
Bin
mark | ie,
Function
Mat | tO,
Function
No.
Division
Drvielon
Pin]
wax | HO
Raweica
Pin]
Mark | vO
=
a3 | wee
°
Double velocity status signal
es | FOLK
co _| Crystal frame clock
No.
Division
'No.
Division
(*H": double)
{Not used, open)
Tl
a
'
'
0
| end
a t o n a l of FL. enter
ae | xa
— _} Not used, onan
44]
ARF
1
| RF signal input
64 | IPFLAG | 0 | interpolation flag terminal
i
ot
Sees ee
a3]
vss
— | GND terminat
8 | vop
1
| Power supply terminal
L
4s | REF
1 | Reterence current input
5 | Flac | 0 | Flag terminal
Si
lcss
?
9 | mcLk | 0 | Command clock signal
Crystal Ose termina
DSL bias terminal
"Turntable servo phase synch.
74.2596MH2)
48
OBE.
| | vot usea, open)
'ignal
ini
5
DP
ae
35 | x2
°
oo)
cvs
© | eH*: CLy, "L": Rough servo)
(Not used, open)
36 | KEYINT
47 | DSLF | 10 | DSL to0p fiter terminal
'Command ioad signal
'
5
1
| Key return signal
HM
2
{ee Loan)
42 | KEVIN'
es
eee
(9 _| Subcode CRC check terminal
48 | PLLF | 10 | PLL toop filter terminal
(1H:
OK, "L": NG)
an
mee
eee
Jes)?
Baul | 20. | ese serae Tis
De-emphasis ON signal
4a | voor | vo | 100 loon titer terminal
68 | vemPH | 0 | CH": 0N)
13, | omute | 0 | Muting contro! signal
44 | POFF
1 | Power det. terminal
(Not ued: cpeny
(Not used, open)
Rotary tray position det.
50 | AVoo2
1
Sears (analog clreulty
Re-synchronizing signal of
14 | sack
© =| Sub-code Q register clock
48
[POSITION]
1
| tare
ay
69 | nesy | 0 | frame sync.
(Not used, open)
s | nc | —
|Notconnecte
as | speep | 1 | Leading motor speed sensor
51 | Ava | — — | GND (analog circuit) terminal
signal
70 | imst2
iy, | Geset sermanal afer "Mnsit
16 | susa
1 | sub-code @ data
47 |Remocon|
1 | Remote contro! signal input
52 | EFM
© | EFM signal (Not used, open)
nn]
rest | 1 | Tost terminal
17 | imeset | 1 | Reset signal input
«|
ic
— | Not used, connected to GND
as | <pex.
|
Pk extract clock
(Normal: "H")
(f=43218MH2)
'Optical servo condition
ne
oe
|_|
Power supply analog circu
18 | zsense | — _ | Not used, connected to GND
49 | mock | 1
| Peete
Phase comparated signal of
fod
terminal (1)
aa
=
s4|
Poo
©
| EFM and PCK
19 | REC.EN | 1 | Synchro. rec. control terminal
Bo, | seuocx || ~ 1." | Geant teres sanettion frcue)
(Not used, open)
7a | our | 0 | teh audio signat
car epee SoS UE IS
fatus
s i g n a l
( C R G ,
'Sub-code serial output data
20
AVSS! | sh | GND termina
as PE a
|_|
Tstop, FoLv, sack)
ss | susc | o
FLV,
(Not used, open)
Saillecaveicst
=
bat
terminal (1)
21 | istsv | 0 | Reset signal output
s2|
vop
| | Power supply terminal
il
Sece.
1
| Subcode serial input clock
(Not used, connected to GND)
78 | OUTR
© | Reh audio signal
22}
OPEN
1
| Open detect terminal
83 | POWER | © | Power ON/OFF output terminal
sri
Eee
Polarity direction control
sa |syNcHRo
2|
on. | o
NCH
— | Not used, open
76i,)
ORSEL
'
{terminal of AF signat
Motor control signal
sa}
xt
1
aa:
Seo
ce.
$5 | KEYouTS
Crystal oscitiator terminal
Frequency control terminal of
i
5
© | Key scan signal
((=16.9944MH2)
77 | set
1 | crystat oscillator
60 | KEYouT1
59
x2
°
(Not used, connected to GND)
25 | LOAD
© —_| Motor control signal
er
ar
5
i
© | Segment signai of FL display
Test terminal
60]
Vo
1 | Power supply terminal
78.)
OPOEL
1
Normal: "U7
26 | pac
© | Not used, open
oD
Se
7
7 | VPP
1 | Power supply terminal
Byte clock signal
"SMCK" terminal frequency
27 | nestsw | 1 | Rest position ae
st | avtek | |
ee cee oon)
72 | MseL
'
m2]
88
SMCK=4.2006MH9
va lupmowm|
1 | Taverss deck oplaowa oot
| | P|
oJ
segment signa of FL splay
Sub-code frame clock signal
terminal
m|
st
62 | recocx | 0 | ( CLOCK=7.35kHz: Normal)
|
see
|_|
SUBQ" terminal mode select
(Not used, open)
CH": @ code button
29 | avon
1
| Power supply terminal
78 | EXDATA | © | Not used, open
30]
aver | 1 | Power supply terminal
73 | eXCLK | 0 | Not used, open
ai | ox
— | Not usea, connected to GND
wo | ce
© | Gria signal of FL display

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