Sony CDX-C570R / CDX-C580R / CDX-C580RW Service Manual ▷ View online
– 25 –
CD SECTION
Note:
1. CD Block basically constructed to operate without adjustment.
1. CD Block basically constructed to operate without adjustment.
Therefore, check each item in order given.
2. Use YEDS-18 disc (3-702-101-01) unless otherwise indicated.
3. Use the oscilloscope with more than 10 M
3. Use the oscilloscope with more than 10 M
Ω
impedance.
4. Clean an objective lens by an applicator with neutral detergent
when the signal level is low than specified value with the following
checks.
checks.
Focus Bias Adjustment
Setting: This adjustment is performed with the set placed
horizontally.
Focus Gain Adjustment (Coarse adjustment)
This adjustment is not required unless the following parts are replaced:
•
•
Optical pick-up
•
RV4
Procedure:
1. Set RV4 to the standard position. (mechanical center)
2. Check whether operation noise (while noise type) caused by
1. Set RV4 to the standard position. (mechanical center)
2. Check whether operation noise (while noise type) caused by
the 2-axis device (lens section of the optical pick-up) is
abnormally loud.
If the operation noise is too loud, turn RV4 slightly counter-
clockwise.
abnormally loud.
If the operation noise is too loud, turn RV4 slightly counter-
clockwise.
•
If the gain is too low:
Focus does not function and no music is selected.
Focus does not function and no music is selected.
•
If the gain is too high:
Noise caused by scratches and dust is heard and the operation
becomes unstable.
Noise caused by scratches and dust is heard and the operation
becomes unstable.
Adjustment Location: servo board
Adjustment Location: servo board (component side)
Procedure:
1. Connect an oscilloscope between TP (RF) and TP (RF. GND)
1. Connect an oscilloscope between TP (RF) and TP (RF. GND)
on the SERVO board.
2. Connect the power supply.
3. Push the RESET button (S900) on the MAIN board.
4. Insert the disc (YEDS-18) and playback.
5. Adjust RV1 so that the oscilloscope waveform is clear and check
3. Push the RESET button (S900) on the MAIN board.
4. Insert the disc (YEDS-18) and playback.
5. Adjust RV1 so that the oscilloscope waveform is clear and check
RF signal level is correct or not.
Note: Clear RF signal waveform means that the sharp “
≈
” can be
clearly distinguished at the center of the waveform.
• When observing the eye pattern, set the oscilloscope to AC range
and raise the vertical sensitivity so that it may be easily seen.
Adjustment Location: servo board
+
–
–
SERVO board
TP (RF)
TP (RF. GND)
oscilloscope
RF signal waveform
VOLT/DIV: 200 mV
TIME/DIV: 500 nS
TIME/DIV: 500 nS
level: 1.0 – 1.5 Vp-p
IC3
CN2
CN1
IC1
FOCUS GAIN ADJ
RV4
TP
(RF. GND)
IC2
TP
(RF)
CN3
RV1
FOCUS BIAS ADJ
– 26 –
4-1. IC PIN DESCRIPTION
• IC801 MB90574PFV-G-110 (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Pin Description
1
LD ON
O
Laser power ON/OFF control output
2
FOK
I
Focus signal detection input
3
XLAT25
O
CD signal process latch output
4
DATA25
O
CD signal serial data output
5
XRSRO
O
Reset output to CD signal process IC.
6
GFS
I
GFS signal detection input
7
NIL
—
Connect to GND.
8
VCC
—
Power supply pin (+5 V)
9
PLL SI
I
PLL data input
10
PLL SO
O
PLL data output
11
PLL CKO
O
PLL clock output
12
NOSE
I
Front panel detachable detection input
13
LCD SO
O
LCD serial data output
14
LCD CKO
O
LCD serial clock output
15
BEEP
O
BEEP output
16
DBMOD2
O
D-BASS mode setting output
17
SQSI
I
Sub Q data input
18
NIL
—
Connect to GND.
19
SQCKO
O
Sub Q read clock output
20
UNI SI
I
Bus system serial interface input
21
UNI SO
O
Bus system serial interface output
22
UNI CKI/O
I/O
Bus system serial clock input/output
23
CNIN
I
Track jump number count input
24
SIRCS
I
Remote commander input
25
SRDT
I
CD-TEXT data input
26
NIL
—
Connect to GND.
27
SCLK
O
CD-TEXT data read clock output
28
CLOK25
O
CD signal process serial clock output
29
SYSRST
O
System reset output
30
DEEM
O
Emphasis output
31
DBMOD1
O
D-BASS mode setting output
32
MD ON
O
CD mechanism deck power control output
33
VSS
—
GND
34
C
—
Power stabilization capacitor pin
35
CD ON
O
CD power control output
36
BUS ON
O
Bus ON control output
37
AD ON
O
Power control output of A/D conversion.
38
DVCC
—
D/A converter VREF input
39
DVSS
—
GND of D/A converter.
40
TEST
I
Test mode setting detection initial input
41
VOL CE
O
Main volume serial chip enable output
42
AVCC
—
Analog power supply pin (+5 V)
43
AVRH
—
A/D converter VREF+ input
44
AVRL
—
A/D converter VREF- input
45
AVSS
—
Analog GND
46 – 48
KEY IN0 – 2
I
Key input 0 – 2
49
RC IN0
I
Rotary commander input 0
50, 51
NIL
—
Connect to GND.
52
MPDH
I
Tuner multi-path input
53
S-METER
I
S-Meter voltage detection input
54
VCC
—
Power supply pin (+5 V)
SECTION 4
DIAGRAMS
– 27 –
Pin No.
Pin Name
I/O
Pin Description
55
AMP MUTE
O
Power amplifier attenuate control output
56
AMP ON
O
Power amplifier power control output
57
XMODE
O
Reset output to CD-TEXT decoder IC.
58
VOL SO
O
Main volume serial data output
59
VOL CKO
O
Main volume serial clock output
60
AU MUTE
O
System attenuate control output
61
AF MUTE
O
Attenuate output at AF operation of RDS.
62
TU MUTE
O
Tuner attenuate output
63
VSS
—
GND
64
ACC IN
I
Accessory power detection input
65
AF SEEK
O
AF operation control output of RDS.
66
M SIO
I/O
EEPROM serial data input/output (Not used in this set.)
67
DAVN
I
RDS IC data taking in detection input
68
M CK
O
EEPROM serial clock output (Not used in this set.)
69
M CE
O
EEPROM chip enable output (Not used in this set.)
70
RDS SI
O
RDS serial data input
71
RDS CKI
O
RDS serial clock input
72
RC IN1
I
Rotary commander shift key input
73
X1A
—
Low speed oscillation input 1
74
X0A
—
Low speed oscillation input 0
75
SCOR
I
SCOR signal detection input
76
BU-IN
I
Back-up power detection input
77
DQSY
I
CD-TEXT data set complete signal detection input
78
CD SENS
I
CD SENS signal detection input
79
KEY ACK
I
Key input detection input at power OFF.
80
TEL MUTE
I
Telephone attenuate detection input
81
ST IN/MONO
I
Tuner stereo signal detection input
82
SEEK OUT
O
MW/LW SEEK output
83
SD IN
I
Signal detector input
84
NC
O
Connect to GND.
85
PLL CE
O
PLL chip enable output
86
H
—
Hardware standby input
87
VSS
—
GND
88, 89
VCC
—
Power supply pin (+5 V)
90
RESET
—
Reset input
91
VSS
—
GND
92
X0
—
High speed oscillation input 0
93
X1
—
High speed oscillation input 1
94
VCC
—
Power supply pin (+5 V)
95
PW SEL
I
Power select initial setting input
96
NIL
I
Connect to GND.
97
AREA1
I
Destination select input 1 (Fixed at “H” in this set.)
98
AREA2
I
Destination select input 2 (Fixed at “L” in this set.)
99
AREA3
I
Destination select input 3 (Fixed at “H” in this set.)
100
BAND (9K/10K)
I
Fixed at “H” in this set.
101
NIL
I
Connect to GND.
102
PH3
I
Not used in this set.
103
PH2
I
Not used in this set.
104
LCD CE
O
LCD chip enable output
105
NIL
I
Connect to GND.
106
RE0
I
Rotary encoder input 0
– 28 –
Pin No.
Pin Name
I/O
Pin Description
107
RE1
I
Rotary encoder input 1
108
LAMP ON
O
Illumination power control output
109
PW ON
O
System power control output
110
REGMOD1
O
FM ON output
111
REGMOD2
O
Tuner power control output
112
CTL1
O
Not used in this set.
113
CTL2
O
Driver IC control output
114
FWD
O
Loading motor control output (Forward direction)
115
REV
O
Loading motor control output (Reverse direction)
116
L SW
I
Sled limit switch detection input
117
IN SW
I
Disc insertion detection input
118
D SW
I
Down switch detection input
119
VSS
—
GND
120
SELF SW
I
Disc self store detection input
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