Technics SL-PS670A

SL-PS670A
SL-PS670A
m@
Block
Diagram
Note: —p—_ AUDIO SIGNAL
| OPTICAL PICKUP UNIT SERVO CIRCUIT MAIN CIRCUIT
t
\
1
MN6474E
1C801
At+C/B+D/E/F eee eee BA4S60FEI 1
& D/A CONV.MASH) DIFFERENTIAL
MN66271 3RG1 3 AMP
AN88O5SBE1
eRpeTe
SROATA
L(t)
>
LLP.
ick
FEOUT FE SERVO PROCESSOR / DIGITAL
SERVO AMP TE SIGNAL PROCESSOR/DIGITAL LMO33M63
bis, FILTER & D/A CONVERTER Peeves our
=
v
DIFFERENTIAL
!
B00
OFTR
/RFDET
RFEN
ss
WL
ort
plea
Ore
WLLLLLLILTILTLLLLLLL
TL
oFT
S
FOCUS
COIL
BDO
|
0751,752 0803,804
SPINOLE
MOTOR
Q80!1,802,854
1 DE-EMPHASIS
RADIAL
COIL
=j
TRV,
TVD,ECM,
DRIVE
sq ECS,KICK,TRO,FOD ee o
' Pc SENSE, -
/FLOCK,/TLOCK, MCLK VCOF BA4560N
XI, X2 SQCK,SUBO,STAT “RST MDATA,MLD 1C871
'
HEADPHONES.
O
> O HEADPHONES
'
: 0851,853 VR871
( PHONES
LEVEL)
AN8389SE! | MUTING }
0871,872
B+O/E/F PHOTO 1C703 CONTROL
4 > DIODES FOCUS COIL/ 4
I
RADIAL
COIL/
SLEDGE MOTOR/
SPINDLE MOTOR
SENSE,/FLOCK,/TLOCK, /SRST MCLK ;
DRIVE SOCK, SUBO, STAT MDATA, MLD Q51,52 ' HEADPHONES CIRCUIT
' RESET 5 a i
SIGNAL
SLEDGE
ey
GENERATOR
MOTOR
INI-ING
TA7291SA
mz UPD78042 A014
MOTOR DRIVE ane
/OPEN, Loapl
re SYSTEM CONTROL/FL DRIVE /CLOSE i > GoroH
(REST
! ow /OPEN SW = 1
+5V REST SW /CLOSE SW
/POWER OFF
' 1
4 T.
P1-PIO POWER STANDBY Se! SOP ENMDE A
Pl22-PI26 PIL-PI6 1G-10G SW LED REMOCON S782 ~ (CLOSE DET.)
POWER SUPPLY CIRCUIT 022
POWER
OFF DET.
22! Q401,402 a
ee tv
OFF DET. LM2940T5M NN i '
D651 O MC74HCIO7DR2
TANDBY)
1,23 +5V fe TRGEN MC74HC74ADRZ
Efe
+7.7V
RCDHC
-278N
TEEN
Mc74HCs8epR2
!
S651 3 | 1C651 | DIGITAL
POWER SUPPLY CONT. KEY MATRIX (POWER) REMOTE (OPTICAL OUT)
o16
L5G
sv
SENSOR
WAVEFORM
4g
~32.1V SHAP >| O
Es ; CIRCUIT .
0891-893 ee 1
Lt
ae From POWER TRANSFORMER
=(Z,
012,13 Q31-34 1
+13.6V
ae eee pe sie
-12.9V
!
POWER SUPPLY CONT.
To FLE6OI
3 OPERATION CIRCUIT LOADING UNIT
fee ~15-