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BLOCKDIAGRAM ECO SHORTLOADER Mk3
DISC
TURNTABLE
MOTOR
TRACK
SERVO
FOCUS
SERVO
SLIDE
SERVO
ALPC
Laser
Inner switch
pick up
unit
PHOTO DIODE
ARRAY
D1
D2
R1
R2
CD - Drive
D3
VAM1201
during focus search
2,5V
0
TB=0.1s
-2,5V
ECO SL Mk3 Blockdiagram (IIs) 19980601
CS 53 149
5-5
> 800 mVpp
Automatic Laser Power Control
Laser
on/off
HF-PREAMPLIFIER
GAIN SELECTION H=CD-R/W, L=normal CD
7802
7819
D1
L.P.F.
+5V
D2
L.P.F.
D3
L.P.F.
D4
L.P.F.
R1
L.P.F.
R2
L.P.F.
FLEX PCB
TDA1302T
DALAS
7851
SERVO DRIVER
TRACK Servo-
TRACK
TRACK Servo+
FOCUS Servo-
FOCUS
6
FOCUS Servo+
TDA7073A
7852
MOTOR DRIVER
SLIDE Motor-
SLIDE
SLIDE Motor+
DISC Motor-
DISC MOTOR
DISC Motor+
TDA7073A
eye-pattern signal
1
TB=0.5 s
RESET
DOBM
MOTO1
MOTO2
16.93MHz
7860
LDON
1
EBU
HFIN
FRONT END
TIMING
INTERFACE
ERROR
MOTOR
SUBCODE
DIGITAL PLL
CORRECT.
CONTROL
PROCESS.
D1
EFM
RAM
PEAK
D2
SRAM
DEMOD.
ADDRESS.
DET.
D3
D4
CONTROL PART
INTERFACE
R1
FUNCTION
AUDIO
SERIAL
PRE-PROC.
R2
CONTROL
PROCESS.
INTERFACE
SAA7372
OUTPUT
VERSATILE
KILL
CD7
STAGES
INTERFACE
RA FO SL
4
RA
(PWM signal)
L.P.F.
TRANSFER OF AUDIO SAMPLES VIA SERIAL INTERFACE OF CD7
3
FO
BCLK
(PWM signal)
L.P.F.
WCLK
left channel
SDA
2
SL
(PWM signal)
L.P.F.
MOTO1
(from CD7)
5
MOTO2
(from CD7)
5-5
7821
EXCK
32kx8
RAM
SBSQ
SCOR
P
WFCK
CRC
MCK
Check
BCLK
XMODE
WCLK
SDA
LC89170M
BCLK
WCLK
SDA
CD7 → DAC
right channel
7855
TDA7072A
1803
+
M
-
TRAY
1804
MOTOR
TRAY -
TRAY +
TRAY
TRAY_SW
RESET
DATA
SILD
SICL
+4V
VDD
1720
DQSY
DQSY
SRDT
SRDT
SCLK
uP_CLK
CD TEXT (optional)
1802
BCLK
WCLK
SDA
+5
+A
+5ESDV
+5V
7877
STABILIZER
+4V
+A
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