SERVICE MANUAL
Ver 1.0 1999.01
ZS-D50
AEP Model
UK Model
Tourist Model
TAPE
Section
CD
Section
Model Name Using Similar Mechanism NEW
Tape Transport Mechanism Type MF-ZSD50
Model Name Using Similar Mechanism ZS-M7
MD Mechanism Type
Optical Pick-up Type
CDM-2411AAA
DAX-11A
SPECIFICATIONS
CD player Section
System Compact disc digital audio system
Laser diode properties
Material: GaAlAs
Wave length: 780 nm
Emission duration : Continuous
Laser output : Less than 44.6
µ
W
(This output is the value measured at a distance of about 200 mm from the objective lens surface on the optical pick-up block with 7 mm aperture.)
Spindle speed
200 r / min (rpm) to 500 r / min (rpm) (CLV)
Number of channels
2
Frequency response
20 - 20,000 Hz +1 / –1 dB
Wow and flutter
Below measurable limit
Radio section
Frequency range
FM
MW
LW
87.5 - 108 MHz
531 - 1,602 kHz
153 - 279 kHz
IF FM : 10.7 MHz
MW / LW : 450 kHz
Aerials FM : Telescopic aerial
MW / LW : Built-in ferrite bar aerial
Cassette-corder Section
Recording System
4-track 2 channel stereo
Fast winding time
Approx. 130 s (sec.) with Sony cassette C-60
Frequency response
TYPE I (normal) : 50 - 15,000 Hz
General
Speaker
Full range : 8 cm (3
1
/
4
in.) dia., 3 ohms, cone type x 2
Input
LINE IN jack (stereo minijack)
Minimum input level 250 mV
Outputs
Headphones jack (stereo minijack)
For 16 - 68 ohms impedance headphones
LINE OUT jack (stereo minijack)
Rated output level 250 mV at load impedance 47 kilohms
OPTICAL DIGITAL OUT (CD) (optical output connector)
Wavelength : 630 - 690 nm
Maximum power outputs
4.5 W + 4.5 W
– Continued on page 2 –
PERSONAL AUDIO SYSTEM
MICROFILM
6-5. SCHEMATIC DIAGRAM (MAIN SECTION)
r Refer to page 51 for IC Block Diagrams.
– 31 – – 32 – – 33 – – 34 –
r Waveforms (Main Section)
1
25.8 Vp-p
4
17.6 Vp-p
2
16.65
µ sec
ERASE HEAD
ATT : 1/10
VOLT/DIV : 1 V AC
TIME/DIV : 5
µ sec
5
16.65
µ sec
Q305 COLLECTOR
VOLT/DIV : 5 V AC
TIME/DIV : 5
µ sec
61 Vp-p 17.6 Vp-p
16.65
µ sec
T301 ATT : 1/10
VOLT/DIV : 1 V AC
TIME/DIV : 5
µ sec
16.65
µ sec
Q303, 304 EMITTER
VOLT/DIV : 5 V AC
TIME/DIV : 5
µ sec
3
13.7 Vp-p
16.65
µ sec
T301
VOLT/DIV : 2 V AC
TIME/DIV : 5
µ sec
Note:
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics and tantalums.
• All resistors are in
Ω
and 1 /
4
W or less unless otherwise specified.
Note: The components identified by mark !
or dotted line with mark !
are critical for safety.
Replace only with part number specified.
• U : B+ Line.
• Power voltage is dc 12V and fed with regulated dc power supply from external power voltage jack.
• Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions.
no mark : FM
< > : REC
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F : FM
E : PB (L-CH) a : REC (L-CH) d : PB (R-CH)
G : REC (R-CH)
J : CD
– 35 –
ZS-D50
6-7. SCHEMATIC DIAGRAM (CD/SYSTEM SECTION)
r Refer to page 52 for IC Block Diagrams.
– 41 – – 42 – – 43 – – 44 –
r Waveforms (CD/System Section)
1 (PLAY MODE) 5
4.8 Vp-p
0.55 – 0.85
Vp-p
2
IC701 #£ (RFO)
VOLT/DIV : 200 m V AC
TIME/DIV : 0.5
µ sec
(PLAY MODE) 6
22.75 µ sec
IC702 $º (LRCKI)
VOLT/DIV : 1 V AC
TIME/DIV : 5
µ sec
2.0 Vp-p
0.6 Vp-p
3
IC701 6 (FEO)
VOLT/DIV : 0.2 V AC
TIME/DIV : 0.2 msec
(PLAY MODE) 7
16.44 MHz
IC702 &¡ (XTAO)
VOLT/DIV : 0.5 V AC
TIME/DIV : 20 nsec
2.0 Vp-p
0.7 Vp-p
4
IC701 $∞ (TEO)
VOLT/DIV : 0.2 V AC
TIME/DIV : 0.5 msec
8
4.21 MHz
IC801 #ª (OSC OUT)
VOLT/DIV : 0.5 V AC
TIME/DIV : 50 nsec
2.2 Vp-p
4.85 Vp-p
5.75
µ sec
IC702 @ª (PCO)
VOLT/DIV : 0.5 V AC
TIME/DIV : 1
µ sec
32.768 kHz
IC801 (™ (CLK OUT)
VOLT/DIV : 1 V AC
TIME/DIV : 10
µ sec
Note:
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics and tantalums.
• All resistors are in
Ω
and 1 /
4
W or less unless otherwise specified.
Note: The components identified by mark !
or dotted line with mark !
are critical for safety.
Replace only with part number specified.
• U : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 12V and fed with regulated dc power supply from external power voltage jack.
• Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions.
no mark : FM (RADIO SECTION),
CD STOP (CD SECTION)
< > : CD PLAY
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J : CD
– 45 –
ZS-D50
ZS-D50 r Semiconductor
Location
Ref. No.
Location
D1
D2
D3
D4
D5
C-2
C-2
E-3
D-3
G-4
IC1
IC2
Q15
Q16
Q18
Q21
Q22
Q23
Q1
Q2
Q3
Q4
Q5
Q6
Q9
Q10
Q11
Q12
D-4
C-6
G-7
G-6
H-7
G-6
I-5
B-3
F-4
F-5
F-5
D-6
E-5
G-4
G-5
H-5
F-5
H-5
6-8. PRINTED WIRING BOARDS (TUNER SECTION)
r Refer to page 26 for Circuit Boards Location.
6-9. SCHEMATIC DIAGRAM (TUNER SECTION)
r Refer to page 55 for IC Block Diagrams.
– 48 – – 47 –
Note:
• X : parts extracted from the component side.
• b : Pattern from the side which enables seeing.
– 48 – – 49 –
r Waveforms (Tuner Section)
1
350 mVp-p
75 kHz
IC2 @¡ (X OUT)
VOLT/DIV : 0.5 V AC
TIME/DIV : 5
µ sec
– 50 –
Note:
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
50 WV or less are not indicated except for electrolytics and tantalums.
• All resistors are in
Ω
and 1 /
4
W or less unless otherwise specified.
• ¢ : internal component.
• U : B+ Line.
• H : adjustment for repair.
• Power voltage is dc 12V and fed with regulated dc power supply from external power voltage jack.
• Voltages and waveforms are dc with respect to ground under no-signal (detuned) conditions.
no mark : FM
< > : MW
[ ] : LW
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F : FM
r IC Block Diagrams (Main Section)
IC301 TA2068N
24
15k
23
LINE
22
10k
21
1k
20
6k
10k
MONITOR
AMP
7dB
19
LOGIC
18
1k
7dB
MONITOR
AMP
10k
17
1k
6k
10k
16 15 14 13
LINE
10k
1 2
10k
TAPE
BUF AMP
A1
10k
10k
NAB
AMP1
3
BUF AMP
10k
B1
BUF AMP
ALC1
26dB
REC
AMP1
REF AMP
DET
4 5 6 7
ALC2
2.1
B2
10k
8
10k
10k
10k
REC
AMP2
26dB
9
TAPE
BUF AMP
MUTE
A2
ON
NAB
AMP2
10 11
MIC
AMP1
10k
1k
12
IC302 BH3854AS
32 31 30 29 28 27 26
TONE
25 24 23 22 21
VR
MATRIX
SURROUND
CONTROL
VR
1 2 3 4 5
TONE
6 7 8 9 10 11 12
20
13
19 18 17
14 15 16
IC305 LA2010
1
AMP COMP(1)
RESET
COMP(2)
HOLD
2 3 4 5 6 7 8 9
– 51 –
r IC Block Diagrams (CD/System Section)
IC701 CXA1992BR
39 38 37
VEE
36 35 34 33 32 31 30 29 28 27
F. BIAS
F
E
40
41
42
EI 43
GND
44
VEE
TO
LPFI
TI
ATSC
TZC
TDFCT
VC
FZC
45
46
47
48
49
50
51
52
VCC
PD2 IV
AMP
F IV AMP
E IV AMP
ATSC
WINDOW
COMP.
TZC COMP.
FZC COMP.
VCC
VEE
1
PD1 IV
AMP
RF
SUMMING
AMP
26 SENS2
VCC
APC
VEE
LASER POWER CONTROL
FE AMP
VCC
IIL
↓
TTL
24 SENS1
VCC VCC
VEE
24 C. OUT
DFCT
23 XRST
VEE
TRK. GAIN
WINDOW COMP.
FO. BIAS
WINDOW
COMP.
FOK
VEE
LEVEL S VEE
VCC
MIRR
IIL
↓
TTL TTL
↓
IIL
22
21
DATA
XLT
E-F BALANCE
WINDOW COMP.
FOH
FOL
TGH
TGL
BALH
BALL
ATSC
TZC
FZC
IIL DATA REGISTER,
INPUT SHIFT REGISTER,
ADDRESS DECODER,
SENS SELECTOR,
OUTPUT DECODER
VCC
20 CLK
19
18
LOCK
VCC
DFCT
TM1
2 3
DFCT
TG1
FOCUS
TRACKING
PHASE COMPENSATION
PHASE COMPENSATION
DFCTO IFB1-6
BAL1-4
TOG1-4
FS1-4 TG1-2 TM1-7 PS1-4
FS1
VCC
TM7
ISET 17 ISET
VCC VCC
TM4 TM6
16 SLO
15 SL-M
TM3
VEE VEE
TM5
TM2
14 SL-P
FS2
Charge up
FSET
TG2
FS4
4 5 6 7 8
VEE
9 10 11 12 13
– 52 –
AVSS 73
LOUT2 74
AIN2
AOUT2
75
76
AVDD 77
AVSS 78
XRST 79
VDD 80
AOUT1
AIN1
65
66
LOUT1
AVSS
XVDD
XTAI
67
68
69
70
TIMING
LOGIC
PWM
XTAO 71
XVSS 72
IC702 CXD2589Q
60
VDD
SYSM
61
62
PWM
AVSS 63
AVDD 64
59 58 57 56 55 54 53 52 51 50 49 48 47 46 45 44 43 42 41
1 2 3
SERIAL-IN
INTERFACE
OVER SAMPLING
DIGITAL FILTER
3rd-ORDER
NOISE SHAPER
SUB CODE
PROCESSOR
ERROR
DEMODULATOR
CORRECTOR
EFM
16K
RAM
ASYMMETRY
CORRECTOR
DIGITAL
PLL
33 CLTV
32 AVSS
31 FILI
30 FILO
29 PCO
40 LRCKI
39 LRCK
38 ASYO
37 ASYI
36 BIAS
35 RF
34
AVDD
DIGITAL
OUT
D/A
INTERFACE
CLOCK
GENERATOR
CPU
INTERLACE
4 5 6 7 8 9
SERVO
AUTO
SEQUENCER
10 11 12 13 14 15 16 17 18 19 20
DIGITAL
CLV
OSC
28
27
VCTL
V16M
26
25
VCK1
VPCO1
24 TES1
23 TES0
22 PWMI
21 MDP
– 53 –
IC703 BA6898S
32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17
LEVEL SHIFT LEVEL SHIFT
OP-AMP
DRIVER-MUTE
REGULATOR
BIAS
T. S. D
MONITOR
LEVEL SHIFT LEVEL SHIFT
50K
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16
IC790 BA6418N
DRIVER
T.S.D.
6.8K
6.8K
12K
20K
CONTROL LOGIC
12K
20K
1 2 3 4 5 6 7 8 9
– 54 –
r IC Block Diagrams (Tuner Section)
IC1 TA2008AN
24 23 22 21 20 19 18 17 16 15 14 13
AM
RF
1
FM
RF
2
FM
MIX
AM
OSC
FM
OSC
AM
MIX
BUFF BUFF
IF
BUFF
AF
BUFF
1/8DIV
AM
DET
AGC
FM
IF
AM
IF
LEVEL
DET
FM
DET
AM/FM
ST/MONO
SW
ST
DET
FM MPX
MUTE
3 4 5 6 7 8 9 10 11 12
IC2 LC72137-D
22 21
OCB
I/F
1 2 3 4 5
20
REFERENCE
DIVIDER
19
FILTER
18 17 16 15
PHASE DETECTOR
CHARGE PUMP
UNLOCK
DETECTOR
SWALLOW COUNTER
1/16. 1/17 4 BITS
POWER
ON
RESET
14 13
1/2
12 BIT PROGRAMBLE
DIVIDER
6 7
DATA SHIFT REGISTER
LATCH
8 9 10
UNIVERSAL
CONTROLER
12
11
– 55 –