Service manual

4-1 4-1
Rec/Pb
Amplifier
AN7318S
Bias Oscillator
Pb
Rec
Rec
Pb
Rec
Pb
Rec
Pb
1626
Pb
1626
CD
Tape
to 1201
FM
AM
1250
CD
Tape
FM
AM
16261626
7625
TA8227P
7300
Pb
CD
Tuner
1
1
5
4
1601
Rec
Rec
Rec
Feedback
+B (TAPE)
ALC
1
3
1204
PLAY
+-
permanent
magnet
erase head
right
left
+A
+Laser
+Laser
7854
7803
ALPC
TRACK
E - F
+
-
FOCUS
TRACK
FOCUS
MOTOR DRIVER
SERVO PROCESSOR
M62475
SERVO DRIVER
SLIDE
SERIAL DATA INTERFACE
F
Monitor
Disc -
Disc +
Inner Switch Inner Switch
Inner Switch
ext. DAC
only
Slide +
Slide -
Laser
Track -
Focus +
Track +
Focus -
B+D
A+C
A+B+C+D
E
+Battery
+A
(TAPE)
TAPE TRANSPORT
CD Synchro
MOTOR
on /off
N S
Rec
FM
frontend
AM
Frontend
FM
Osc.
FM
Mixer
AM
Mixer
AM
Osc.
AM IF
IF1
IF2
FM
Det.
AM
Det.
RADIO IC
TEA 5711T
TUNER BOARD
Discr.
LF filter
285 29
2
3
26
left
left
right
right
stereo
VCO
1514 10 20
Stereo
Decoder
Vcc
2
1
AGC
AM/FM
Indicat.
FERRITE
ANTENNA
18
24
23
16
B
C
468kHz468kHz
V
Stab
A V
Stab
B
V
Stab
A V
Stab
B
10,7 MHz 10,7 MHz
9 27
Vcc
625
V
Stab
A
V
Stab
B
12
8
A
AM-RF
AM-Osc.
FM-Osc.
FM-RF
TELESCOPIC
ANTENNA
1
5
7111321
AGC/AFC
tuning indicator
AFC
AFC
7102
7101
AM/FM
switch
STABILIZER
FM-IF 1 FM-IF 2
30
3
AM-IF 1 AM-IF 2
+B (TAPE)
CD Synchro
CD Synchro
+A (Tuner)
+A (FM)
Tuner L
Tuner R
to/from
source switch
+A (Tuner)
+A (FM)
2
1
1202
1
2
1203
+
BATTERY COMPARTMENT
6 x 1.5V
(R20)
3
4
5
MAINS-SOCKET
5001
Th. 115˚C
VOLTAGE
SELECTOR
1007
1006
1
2
(for /01/11 only)
!
!
!
!
+A
+A
+A
(CD)
+A(CD)
+B(CD)
+B(CD)
Vcc
Vcc
+B
(CD)
+A(on) +B(Tape) +A(FM) +A(Tuner)
REC/PB - AMPLIFIER
SOURCE
SWITCH
Rec
POWER STAGE
DBB
VOLUME
HEADPHONE
1302
RIGHT
LEFT
+
+
+
+
-
-
-
-
4
1
1301
p
Left
Right
+A
+M
+M
soft
on/off
4x 1N4002
6250
6251 6252
6253
CD
Tape
FM
AM
on/off
4Ω
4Ω
1350
FRONT BOARD
COMBI BOARD
5803
8.46MHz
ext. DAC (opt.)
left, right out
left data
l/r clk
right
4.23MHz
1 11
1
12 1, 35-40
8
39
16
32
13
27
30
X
in
23
CD-reset
11
STOP
PLAY
MODE
PREV
NEXT
7800
1813
1812
key in
+
-
RESET
reset
watchdog
reset
door
1
2
1809 1808
1
2
1807
door
switch
1
28
21 29
36
2
1
5
4
15
30
16
40
33
32
27
19
PWM
PWM
42
V
DD
analog
V
DD
logic
V
DD
1
V
DD
2
23
22
28
5
8
6
10
18
37
40
39
20
REF
HF
HF
+Laser
+M
18
15
1811
1 29
7801
DECODER
M65824
6
1
1810
-
+
Clock
Generator
PLL
frontend
motor
control
digital
PLL
EFM
demod.
flags
DAC
audio
processor
error
control
SLIDE
DISC
CD - PART
DATA INTERFACE
EVA Blockdiagr., 260897
V
DD
V
SS
data
interface
D/A
D/A
L/R CLK
DSCK
2
3
1
8
6
TDA1311A/N2
SHUFFLE
PROGRAM
REPEAT
ALL
1101
1201
MICRO PROCESSOR
TMP47C422F
1820
3300
+A(on)
5V
0V
152kHz, 50mV
pp
stereo stereomono
eye-pattern
TB=0,5 us/DIV
Focus search
Service step 2
2V
+
-
0.3s
PWM
DISC MOTOR
TB 2us/Div
4V
HF
DISC
Laser
diode
PHOTO DIODE
ARRAY
DISC
MOTOR
TRACK
SERVO
FOCUS
SERVO
SLIDE
SERVO
CD-drive
CD94V5T1
Monitor
diode
pick up
unit
t
u
r
n
t
a
b
l
e
Inner
switch
FLEX WIRE
FLEX WIRE
F
C
D
A
B
F
C
D
A
B
F
E
C
D
A
B
s
l
i
d
e
m
o
t
o
r
BLOCK DIAGRAM
CS 49 120