Sony CFD-Z500 / CFD-Z550 Service Manual ▷ View online
– 13 –
FM RF SSG
telescopic antenna
input
input
0.001
µ
F
Put the lead-wire
antenna close to
the set.
antenna close to
the set.
AM RF signal
generator
generator
FM RF signal
generator
generator
telescopic antenna
input
input
set
0.01
µ
F
TUNER SECTION 0 dB = 1 µV
• FM Section
Setting:
RADIO BAND switch: FM
RADIO BAND switch: FM
22.5 kHz frequency
deviation by 400 Hz signal
output level : as low as possible
deviation by 400 Hz signal
output level : as low as possible
• AM Section
Setting:
RADIO BAND switch: AM
RADIO BAND switch: AM
30% amplitude
modulation by 400 Hz signal
output level : as low as possible
modulation by 400 Hz signal
output level : as low as possible
FM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L2
CT1-2
86.5 MHz
109.5 MHz
FM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L1
CT1-1
86.5 MHz
109.5 MHz
FM IF ADJUSTMENT
T1
10.7 MHz
AM FREQUENCY COVERAGE ADJUSTMENT
Adjust for a maximum reading on level meter.
L4
CT1-4
520 kHz
1,680 kHz
AM TRACKING ADJUSTMENT
Adjust for a maximum reading on level meter.
L3
CT1-3
620 kHz
1,400 kHz
AM IF ADJUSTMENT
Adjust for a maximum reading on level meter.
T2
455 kHz
• Repeat the procedures in each adjustment several times, and the
frequency coverage and tracking adjustments should be finally
done by the trimmer capacitors.
done by the trimmer capacitors.
• Remove telescopic antenna in FM section adjustments.
FM VCO Adjustment
Setting:
Procedure:
1. Adjust RV1 so that the reading on the frequency counter becomes
1. Adjust RV1 so that the reading on the frequency counter becomes
in 76.0 kHz ± 50 Hz.
Adjustment Location: See page 14.
Modulation: no modulation
Output level: 0.1 V (100 dB)
Output level: 0.1 V (100 dB)
Adjustment Location: See page 14.
– 14 –
TP(RFO)
TP (RFO)
RF level :
1.3
1.3
±
0.5 Vp-p
VOLT/DIV : 200 mV (10 : 1 probe in use)
TIME/DIV : 500 nS
TIME/DIV : 500 nS
Adjustment Location:
CD SECTION
CD section adjustments are done automatically in this set.
In case of operation check, confirm that focus bias.
In case of operation check, confirm that focus bias.
FOCUS BIAS CHECK
1. Connect the oscilloscope between IC701 pin #£ (TP RFO) and
GND on CD board.
2. Insert the disc (YEDS-18). (Part No. : 3-702-101-01)
3. Press the
3. Press the
^ button.
4. Confirm that the oscilloscope waveform is as shown in the
figure below. (eye pattern)
A good eye pattern means that the diamond shape ( ) in the
center of the waveform can be clearly distinguished.
A good eye pattern means that the diamond shape ( ) in the
center of the waveform can be clearly distinguished.
• RF signal reference waveform (eye pattern)
π
Test Point:
When observing the eye pattern, set the oscilloscope for AC range
and raise vertical sensitivity.
and raise vertical sensitivity.
L2
CT1-2
L1
CT1-1
RV1
FM VCO
ADJUSTMENT
L4
CT1-4
L3
CT1-3
FM
FREQUENCY
COVERAGE
ADJUSTMENT
FREQUENCY
COVERAGE
ADJUSTMENT
FM
TRACKING
ADJUSTMENT
TRACKING
ADJUSTMENT
AM
FREQUENCY
COVERAGE
ADJUSTMENT
FREQUENCY
COVERAGE
ADJUSTMENT
AM
TRACKING
ADJUSTMENT
T2
AM IF
ADJUSTMENT
AM IF
ADJUSTMENT
T1
FM IF
ADJUSTMENT
FM IF
ADJUSTMENT
– main board (component side) –
BATTERY board
POWER board
BACK-UP board
REC SW board
SENSOR board
(CFD-Z550)
(CFD-Z550)
CD MOTOR board
CD board
MAIN board
CONTROL board
– 15 –
– 16 –
5-2. CIRCUIT BOARDS LOCATION
5-1. IC PIN DESCRIPTION
• IC801 CXP83620-008Q (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
C-SCOR
I
CD SCOR input
2
RMC
I
Sircs receiver input
3
MOTOR-CONT
O
Motor control signal output
4
NC
—
Contact to pin 78.
5
C-SEN1
I
CD SENSE-1 input
6
C-SEN2
I
CD SENSE-2 input
7
C-SQCK
O
CD Sub-Q read clock output
8
C-SQSO
I
CD Sub-Q data input
9
C-RST
O
CD reset output
10
C-CLK
O
CD serial clock output
11
C-LAT
O
CD serial latch output
12
C-DATA
O
CD serial data output
13
REC
I
Tape record signal input L: REC
14
ST-IN
I
Stereo signal input
15
NC
—
Not used.
16
FM/AM
O
Radio band output
17
NC
—
Not used.
18
V-LAT
O
Volume latch output
19
V-DATA
O
Volume data output
20
V-CLK
O
Volume clock output
21
C-DOOR
I
CD door open/close switch input L: Close
22
P-CON
O
System power control output
23 – 25
KEY-1 – 3
I
Key input
26
VH
I
Operation voltage detection input
27
INIT
O
Initial set signal output
28
VERSION
I
Mode set pin
29
VM
I
Voltage detection input
30
RST
I
System reset input
31
EXTAL
I
Oscillation input (4.19 MHz)
32
XTAL
O
Oscillation output (4.19 MHz)
33
VSS
—
GND
34
VL
O
LCD drive port ON/OFF output
35 – 37
VLC-3 – 1
O
LCD drive voltage terminal
38 – 41
COM0 – 3
O
LCD drive common output
42 – 59
SEG0 – 17
O
LCD drive segment output
60 – 65
NC
—
Not used.
66
A-MUTE
O
Audio mute output H: Mute
67
SOUND
O
Graphic equalizer on/off signal output
68
C-MUTE
O
CD block mute output H: Mute
69
TAPE
O
Tape function output H: Tape
70
RADIO
O
Tuner function output H: Radio
71
CD
O
CD function output L: CD
72
VDD
—
Power supply pin (+5 V)
73
TX
O
Oscillation output (150 kHz)
74
TEX
I
Oscillation input (150 kHz)
75
NC
—
Not used.
76
ISS-A
O
Not used.
77
ISS-B
O
Not used.
78
NC
—
Contact to pin 4.
79
TC-PLAY
I
Tape play switch input L: Tape
80
REGCK
I
Regulator check signal input H: ON
SECTION 5
DIAGRAMS
CFD-Z500/Z550
– 17 –
– 18 –
5-3. BLOCK DIAGRAM — CD SECTION —
M
38
33
35
18
11
10
12
13
14
79
23
20
21
22
26
25
24
• Signal path
• R-ch : same as L-ch.
: CD
27
PD1
RF AMP
FE AMP
39
36
37
PD2
LD
PD
E
F
VC
42
41
51
17
18
19
23
13
LD ON
SWITCH
Q701
LASER
DIODE
CONTROL
SERIAL/
PARALLEL
CONVERTER
DECODER
RF O
FOK
C. OUT
SENS1
SENS2
IIL
TTL
DATA
XLT
CLK
XRST
TTL
IIL
TRACKING
PHASE
FOCUS
PHASE
PHASE
COMMAND
6
16
7
57
4
5
6
17
15
21
8
9 62
65
67
TAO
FEO
SLO
RF AMP & SYSTEM SERVO PROCESSOR
IC701
DIGITAL SIGNAL PROCESSOR
IC703
VREF
TRACKING
COIL
DRIVE
26
27
25
7
3
9
FOCUS
COIL
DRIVE
T+
F+
F-
T-
2
1
SLED
MOTOR
DRIVE
12
11
14
SPINDLE
MOTOR
DRIVE
SL+
CNP702
CNP707
CNP701
SP+
SP-
SP0
SL-
TRACKING
COIL
FOCUS
COIL
A
5
7
6
4
12
14
15
13
16
4
3
6
5
2
3
4
1
2
5
3
8
10
C
B
D
E
F
LD
PD
OPTICAL PICK-UP
BLOCK
(KSS-213C)
TIN
FIN
MUTE
SLIN
SPIN
15
16
16
SPIN
VREF
VREF
VREF
VREF
-
+
+
OPTICAL PICK-UP
DRIVE
IC702
M702
(SLED)
M
M701
(SPINDLE)
9
C-RST
6
C-SEN2
5
C-SEN1
8
C-SQSO
7
C-SQCK
1
C-SOR/R-CNT
10
C-CLK
4
C-MUT
11
C-XLAT
12
C-DATA
RF
FOK
CNIN
SEIN
DATO
XLTO
CLKO
XRST
MDP
SPOA
XLON
SENS
SQSO
SQCK
SCOR
DATA
XLAT
CLOK
SYSM
XTAI
XTAO
SERVO
AUTO
SEQ.
EFM DEMODULATOR
SERIAL
INTERFACE
D/A
INTERFACE
SUB CODE
PROCESSOR
CPU INTERFACE
DIGITAL
CLV
S701
(LIMIT)
SYSTEM CONTROL
IC801 (1/2)
70
•
71
X701
16.9344MHz
DIGITAL
FILTER
&
D/A
CONVERTER
AOUT1
LOUT1
76
74
AOUT2
LOUT2
CD L-CH
R-CH
CNB704
5
A
MAIN
SECTION
PWM
AMP
PWM
AMP
CD
04
4
CNP801
CNP703
7
8 5 6
10
1
2 3 9
7
4
3 6 5
1
10 9 8 2
CD BOARD
CONTROL BOARD (1/2)
CD MOTOR BOARD
(Page 19)
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