Technics SL-PJ37A

m BLOCK DIAGRAM
OPTICAL
PICKUP
UNIT
SERVO
CIRCUIT
MAIN
CIRCUIT
|
UM6IIEM—2
ek Ram BER
l fs
PLTIO2L
0e@~7 RAM ®~40/0E/WE JK30I
1
|
|
HF /DI~D4 HF/RFE | 1501] EFM
:
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awes7is
~«=—
FEE
ee.
|
DATA SLICE & PLL 7 TRANSMISSION MODULE
Lo
TDABBOBT
.
Re
SRF
a
DIGITAL
OUT
!
j
PHOTO
DIODE
PLL
MN6625
(OPTICAL)
!
SIGNAL
PROCESSOR
prone
ADJ.
DIGITAL
SIGNAL
PROCESSOR
LM boos “ee PCK x32!
FPC mn
i
OFFSET
ADJ.
pO
1
1 VR3569
+
5V
mn
5
aaa
——
EcsPc
BLKCK
/
ast
STAT TRON OMUTE CLDCK/SUBO = SMCK = MEMP
FOCUS
MOTOR
—_
i
4
;
1 <J 1
40!
!
C6504
le
|
TCAO372DP
RADIAL MOTOR RADIAL DRIVE 1
| — Peg |
' LASER DIODE | i i
' 1
Ne:
A | | 1 PIO/TL P45/HFD P24/Si/ POO/STAT SBO/TRON P25/ SBTO/POS/P04 OSCI/ P46/ MLD/MCLK /
—
RD
DMUTE
OSC2
EMPH
MDATA
!
'
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ia
path
TDASBOST
eee
p20~23/
cao
TEROST
ADJ.
RADIAL
ERROR
SIGNAL
eset
:
bl
Sey
B
3
MNISTI6SPIWS
my
DIV paeeetn MOTOR DRIVE
i
IRQO/XI
CLOSE
>
'
' PO3/TRAY SW P40~44 DGTO~6 DGT7N IS SEGONS F27 P6I IRQE RST
TRAY SW : : : 1
|
_1_
S100!
|
1
oOo oO ‘
| LOADING t
MOTOR
I = os es te
| q ns 0251,252 '
ee 3 ee | -_—————_ - > Le Pee WIRED
|
POWER
SUPPLY
CIRCUIT
—
LM29goTSM
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REE
1
ey
MATRIX
ee
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051,52
IGRHREES
.0'3~'6,011~20
sil
a
se00~Vere,
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:
ie
!
RESET
SIGNAL
!
CONTROE $623. 006831 : pee GENERATOR '
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oy
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!
Ss
L
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SYNCHRO
|
|
REC
1
:
!
'
4
t5v
|
|
-31v
t
FE
DISPLAY
I ac7V ' ! ' I
OPERATION CIRCUIT LOADING UNIT
Note) *———> Audio signal.
RAD out Current output of integrated (Re2 — Re1) RE dig : Radial error digital. ! P40~44 > Key return signal. MEMP : Deemphasis command (Active High) ;
input currents, (IRQO/X!) DGTO~15 : Key scan signal and FL digit signal. (EMPH)
BO ~ B3: : Control bits for radial circuit. RE lag : Radial error signal for LAG network. SEGO~8 : FL segment signal. P27/P61 : Synchro rec control
DODS : Drop out detector supression. Si/RD : On/off control for laser supply and focus circuit. MCLK. |: Dataclock for MDATA. IRQ1 : Remote control signal
DI~D4 : Photodiode currents, TL > Track loss signal. SUBO ~° : Sub-codeQ data. 384fs (X1) : 384 fs (16.9344MHz) signal
FE : Focus error signal. Div4 : Radial error digital devided by four, CLDCK : Data frame clock (7.35KHz). T™ : Digital signal output
FE
lag
:
Focus
error
signal
for
LAG
network.
HF/RF
>
Data.
BLKCK
:
Sub-code
O
data
block
clock
(75
Hz).
DO~7
:
16K
RAM
data
HE : HF output for DEMOD. DO : Drop-out detection signal (Active High). RST : Reset command (Active Low). RAMO~10 : 16K RAM address signal
HFD
:
HF
detector
output
for
DEMOD.
SRF
‘Sliced
RF
signal.
(RSTB)
;
P25
(MUTE)
:
Muting
control
signal
(PLLH)
EFM
:
Modulation
data.
TRON
:
Tracking
servo
ON
command
(Active
Low).
P26
©)
“Leading
nietoreenttel
dane
HFin
:
HF
current
input.
PCK
:
PLL
extract
clock
(4.2336MHz).
EC
:
Turntable
motor
drive
signal.
(OPEN/CLOSE)
LM
:
Laser
monitor
diode
input.
FPC
:
PLL
frequency
comparison
signal.
PC
:
Turntable
motor
ON
command
(Active
Low).
LO
:
Laser
amplifier
current
output.
STAT
:
Status
command
for
CRC
etc.
SMCK
:
System
clock
(4.2336MHz).
Rel : Radial error signal 1 (summation of amplified DMUTE : Data mute command. (OSC1/OSC2)
currents
D3
and
D4).
MDATA
:
Mode
control
data.
OE
:
Read
out
enable.
Re2
:
Radial
error
signal
2
(summation
of
amplified
MLD
:
Load
command
for
mode
control
data
WE
:
Write
enable.
(Active Low).
currents D1 and D2).
a | gee Se qees.