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BLOCK DIAGRAM |
SERVO + PRE-AMPLIFIER PCB |
1
2
3
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5
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=
SEER
SS
7
| c.0.M.-2
| SERVO + HF AMPLIFIER CIRCUIT
:
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;
;
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{
HF in
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Dl-4
HE
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|
VLLLLLIL ILL L LLL IL LL ERLE ELE LA LL ELL EL
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PZZLLLLLLLLLL LL 1 DEMOD
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|
PHOTO DIODE SIGNAL
fo.
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Y
PROCESSOR
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4
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D1
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LASER MONITOR -————
¢
CD MECHANIM CDM-2
7
|
Satine
ce
Y
DoDSs
MOTOR
1 -
sl
|
¢
|
FOCUS
44
a
4
MOTOR
i
y
i
FOGUS MOTOR
"SUE
satel
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E Ee
<|
1
FROM DEMOD
y
TURNTABLE
Qdata
|
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MOTOR
RADIAL MOTOR
SADIAL DRIVE
Qsync |
C
FROM DEMOD
|
g
<q
MAB 8441
|
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|
g
MUTE | to DEMOD
|
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SERVO uP
j AND ERO
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DEEMPH | To DEEMPH
|
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yp
eaRcutT
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ITC
8
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2p
| To CONTROL
|
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+ AND
we
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oY
|
:
d
|
TURNTABLE
|
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MOTOR
wces
|
;
CONTROL
j FROW ERCO
|
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TDA 5709
7
RADIAL ERROR
.
|
PROCESSOR
|
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Fn
eee le
nn
ne
SN
PRS.00498
37703030//A
y
f
BO-B3
-
Control bits for radial circuit
Q CLOCK
-
Subcode clock input for servo pP
DAC
-
Current output for track jumping
Q DATA
-
Subcode data input for servo pP
(Digital to Analogue Converted)
Q SYNC
-
Subcode synchronization input for
DEEMPH
-
Deemphasis
servo pP
_
Boos
-
Drop out detector supression
RE
-
Radial error signal (amplified
5
;
:
D1i+4
-
Photodiode currents
RE1-RE2 currents)
FE
-
Focus error signal
RE1
-
Radial error signal 1 (summation of
FE lag
-
Focus error signal for LAG network
amplified currents D, and D,)
HF
-
HF output for DEMOD
seb
RE2
Radial error a
eae
a
of
1101 cs
2105 403-2110
C03
2120 EDS
2125 £03
2136 CO2
2150 CO&
2155 DOs
2170 COS
3101 03
afi
2101
106
A03
2111
©CO2
2121
E04
2126
37.
£02
2151
C04
HFD
-
HF detector output for DE
amplified currents
, and D,)
2102 BO2
2107 AO3
2112
BO2
2122 E03
2127 Sot 9138 E02
2152 DOS
ae Soe aiyse ace. eins 902
HF-in
P
HF current input
RE dig
'
Radial error digital
2103
BO3
2108
BO2
2113
BO3
2123
FO2
2134
coz
2139
DO2
2153
DO3
2159
DO2
2173
ADS
3104
Dd3
120
7
Clock
signal servo-control
pP
RE
lag
.
Radial
error
signal for LAG
network
2104
A03
2109
AO3
2114
BOS
2124
£03
2135
C03
2140
DO2
2154
DO3
2160
CO3
2174
BOS
3105
C03
.
a
:
1
3106
CO3
3111
BO3
3117
EOS
3122
EOS
3127
32
£05
3139
i2D
-
Data signal servo-control pP
RD
Ready signal, starting up procedure
3107
AOS
3112
BO2
3118
E04
3123
EOS
3128
=
ai38 C03
aio 3
aii oon
a167 ar
aie Ok
LM
-
Laser monitor diode input
finished
ae =
re =:
7
a
-s ie
es £03 3136 8
31st co2 3152
DOS
3158 COS
3170
BO4
LO
-
Laser phaey alee Bose
Si
=
abel cla for laser supply and
ari0. Boe
BILE BDL.
SiGL FOS."
23126" 03» < 3131. "802 3138 £02
3143 Boe, Ase 1EDe: SaIee Apod- tenk
MCES
-
Motor control
trom
oO servo
ocus Circul
ai99
.
BO4
3178
B04
705
»bdO3
3720
BOS
610
E05
6
circuit
7
TL
-
Track lost signal
3178 oe 3701 003
3709 mes drat Be sis Doe: 610) 3
si g03 6117 03
F
B02
3710
2
104
109
114
DO
MUTE
:
Mute signal
Vc
-
Control voltage for turntable motor
S175 Ca
S002 BO
IG) OO
ee
ee os
Aims
3177
BOA
3704
BO3
3712
BO3
6101
BO3
6106
Fo5
6)111
EOS
6116
FOS
/ Druck 7
iS 2815
Werbung
