Technics SL-PG200A

¢ 1C801 (MN6474): Digital filter and D/A converter
0
Division
Command load input (load: L)
(Not used, connected to VDD)
MLD
Reset terminal
Not used, connected to GND
RSTB
A
TP1
TP2
TEST terminal
TEST terminal 1
(connected to GND)
TEST terminal 2
(connected to GND)
Not connected
Not connected
Power supply terminal
Lch data output, (—) terminal
EST1
N“N | EST2
z (o)
z ?)
VDD4
OUTL (-)
AVSS4
VSS3
OUTL (+)
VDD3
= =
a/a] oa = i] wo} Pp Oo
>
A
GND terminal
=
oa
ra z fe
> >| > > >
< < n Oo alae
OUTR (+)
VSS2
20
21
22
23
OUTR (—)
VDD1
DVDD1
—a/asfu
oOo;oirn
110
Division
Pde GND terminal (digital system)
Crystal OSC terminal (33 MHz)
| - | Not connected
i Power supply terminal
tin GND terminal (digital system)
Sub-strate terminal
(Not used, connected to VDD)
=f [= faa
BCLK Serial bit clock input
SS Serial data input (MSB first)
DVSS3 GND terminal (digital system)
DVDD —— Power supply terminal
| 39 | seats | 0 | 384fs (16.9344 MHz) output
40 Power down terminal
(Not used, connected to GND)
Mode control data
(Not used, connected to VDD)
Data clock for MDATA
(not used, connected to VDD)
Mi BLOCK DIAGRAM
Note)
em Audio signal.
SERVO CIRCUIT
| MAIN CIRCUIT
HF /DI~D4
HF /RFE
me
ligase acmemmaiamenmerees aura (A
482220973234
DISC
FOCUS MOTOR
’
LASER DIODE
‘
‘Hy
a LASER
POWER
ADJ.
VR3520
DIODES
(4X)
HF /DI~D4
POWER SUPPLY CIRCUIT
LM2940TSM
an~is,
891.893
POWE
Tl
Olin 17
AC FI POWER
IN {oe rnin frecrine
FORME:
RAD out : Current output of integrated (Re2—Re1)
input currents.
BO~B3 : Control bits for radial circuit.
DODS : Drop out detect signal.
D1~D4 : Photodiode currents.
FE : Focus error signal.
FE lag : Focus error signal for LAG network.
HF out : HF amplifier and equalizer voltage output.
HFin : HF current input.
LM : Laser monitor diode input.
LO : Laser amplifier current output.
Re1 : Radial error signal 1 (summation of
amplified currents D3 and D4).
Re2 : Radial error signal 2 (summation of
amplified currents D1 and D2).
1
!
| { +5v
1
VR3569
FOCUS ORIV!
<q
FOCUS
OFFSET ADy.
-5v
SIGNAL PROCESSOR 0008
-
035! |
<4 —=—P¢
ECS/ECM
FE/ ae si/
FElag Rel Re2 TL PULH RO
1
( TOA8808T )
PHOTO DIODE
1
Ee |
'
+ —
'
'
H
| S TURNTABLE. ———
x MOTOR
. RADIAL MOTOR
—_—_
1
1
fl
|
RADIAL DRIVE
<|
eos |
482220972587
(TCAO3720P2)
t
00S TL
out
f1c6503|
482220973235 . ee :
(TOABBOST
)
be
:
Sd
ae~s
RADIAL ERROR SIGNAL
PROCESSOR
an ove
_ REDIG/XI
TRAY SW P42 ~.P43
TRAY SW
soot i
KEY MATRIX
TCAO372DM2R
(Active Low).
MN6626
DIGITAL SIGNAL PROC
SUBO/SOCK
BLKCK
Civs STAT TRON SMCK
if ! 4 Y
y 7 ry if
HFD SI/RD CLVS STAT TRON OSCI/ — SUBQ/SQCK
Osc2 BLKC!
K
1C401
MNI8S7TIGI7PKJ
SYSTEM CONTROL
SEGO~ SEGIS
(A~w PP
FL6OI
Fi. DISPLAY
P42~46
1G~12G
SEGO~15
MCLK
ECS/ECM
PC
SMCK
(OSC1/OSC2)
: Key
: FL
: FL
: Dai
: Sul
: Dat
: Sut
: Sul
: Res
: Tra
: Tur
: Tur
'
,0351 |
“ioron§
CONTROL |
i}
OPERATION CIRCUIT
RE dig : Radial error digital.
(RE DIG/X1)
RE lag : Radial error signal for LAG network.
Si/RD : On/off control for laser supply and focus
= circuit.
TL : Track loss signal.
Div4 : Radial error digital devided by four.
HF/RF/ARF _ : RF (Audio) signal.
TRAY SW : Disc holder open/close det. terminal.
CLVS : Spindle servo phase synchro signal.
STAT : Status command for CRC etc.
DMUTE : Data mute command.
MDATA : Mode control data.
MLD : Load command for mode control data