Technics SL-PD647

Mi BLOCK DIAGRAM
|
|
|
|
|
|
|
|
|
|
|
|
|
!
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
!
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
I
|
|
|
|
|
I
I
|
|
|
OPTICAL PICKUP
Vref
Semiconductor laser
Photo detector
|
|
|
|
|
|
|
|
|
|
|
| RAI
POTENTION
|
|
|
|
|
|
|
|
|
|
METER
AN8389SEI
jFOCUS COIL/ TRACKING
jCOIL/TRAVERSE COIL/ !
signal
gemerator
SPINDLE MOTOR VREF 9
22} oat
Tracking Y Tracking ina}s
coil | 21904- coil
. Se, drive
| |
Focus
coil
Traverse
Troverse
coil
coil
drive
Spindle
SPINOLE
motor
MOTOR
AN8802SCEIV
SERVO AMP
ENV
oO
BDO
detector
RF
Level H ENV
cliper (B.P.F) (I Y
Lope toe, oe lees
BDO,gI7
oO
RFOETAIS
o
FEg25
;
>t
Vref
TESAI4
O
| |
4
converter
33)TE
©
36,0FT
é
37) TRCR:
6
35[VOET
é
comparator
TEBPF 423
Phase
|
fe)
{“}-} Vref |
SS. ss a
— oO Oe Oe EO ee eae eee eC OC
Phase
comparator
vco
RAM
TRV
Frequency
comparator
Synchronizing
interpolation
protection
address
generator
cClv
servo
Servo
CPU
=
oO
w
Servo output
port
MNG6271----Type A
MN662712RA-~-Type
B
|
SERVO
PROCESSOR/DIGITAL
SIGNAL
PROCESSOR/
DIGITAL
FILTER/D/A
CONVERTER
Syndrome
calculation
CIRC
decodor
s 2} ]s |
EFM.
Interpolation
s
B)
=
|
doto
/sott
muting
[F——|_
©
3
:
s
|
demodulator
sdigitol
[TT
a
|
fee
=
I
attenuation SN as 2
a
a
|
:
iene
ee
LRCK§2
é
Peak I
detector/
BK
auto cue
SR DATA,3
Sub-code | :
demodulator | t
X2159
cRCC
check
Q-code
Timing
generator
register
Microcomputer
interface
wl |x| [¥ & x
e| ZEB ol
a wy ley lie cz oO a a
a 2 $24 § —_
10 Ji [iz fe 13 ia 15
X401(4,2336!
63 14 fis J J I J 18,29,5420,33 434
—_ —— a ed es § < ‘a — =<;
5 ; -
ff ¢ 8 &€ & € 3 3 8 #2 = $
| 2 a a = 7) 3 4 = a "4
49 = - =
9 TLOCK uP0780438014:
S24 FLOCK SYSTEM CONTROL &
12 .
& SENSE z z « 2
L
aA
a
a
a.
BA6427N
MOTOR DRIVE
circuit
Motor
control
WR
MSSI
(LOADING MOTOR)