Sony CDX-L550X / CDX-L570X / CXS-3100 Service Manual ▷ View online
17
17
CDX-L550X/L570X
KEY MATRIX
LSW501-510,
LSW513-522
KEY
ACTIVE
Q801
DOOR IND
DRIVE
Q914, 915
IR
RECEIVE
CNP801
(REMOTE IN)
ROTARY
ENCODER
RE501
IC502
S902
(NOSE DET)
X802
32.768kHz
97
96
34
15
16
12
13
5
18
20
19
4
26
91
98
6
29
SYSTEM CONTROL
IC801 (3/3)
LCD DRIVE
IC501
KEY IN0
DATA
CLK
CE
LCD SO
LCD CKO
LCD CE
POWER
CONT
Q906
SWITCH
Q905
92
DOOR IND
KEY IN1
KEY ACK
AD ON
RC IN1
RC IN0
SIRCS
RE IN0
RE IN1
NOSE SW
XIN
XOUT
OSC OUT
93
ILL ON
BATT
OSC IN
X801
18.43MHz
LED905,LSW916
LED510-513
LSW501-510
LSW513-522
LSW513-522
LCD BACK
LIGHT
78
77
76
COM1
COM4
LCD
LCD500
D801
D802
(
)
KEY
ILLUMINATION
ILLUMINATION
(
)
65
|
68
80
•
1
|
64
|
SEG2
SEG66
|
3-4. BLOCK DIAGRAM — DISPLAY SECTION —
tuner unit
(TU601)
(TU601)
IN SELF SW board
DISPLAY board
RELAY board
SERVO board
MAIN board
SL SW board
3-5. CIRCUIT BOARDS LOCATION
—
Main Board
—
1
2
IC801
qh
(XOUT)
18.43MHz
IC801
qs
(OSCOUT)
3.8Vp-p
5Vp-p
30.5µsec
• Waveforms
— Servo Board —
(MODE: CD PLAY)
1
2
3
IC1
ts
(PACK)
IC1
uj
(RFO)
1.2Vp-p
4
Approx. 1Vp-p
IC1
oa
(FEO)
0V
5
Approx. 400mVp-p
IC1
od
(TEO)
4.4Vp-p
16.9344MHz
IC1
wd
(XTAL)
4.8Vp-p
0V
34msec
18
18
CDX-L550X/L570X
3-6. PRINTED WIRING BOARDS — CD MECHANISM SECTION —
Note:
The components identi-
fied by mark
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
for schematic diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
and tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
%
: indicates tolerance.
•
f
: internal component.
•
C
: panel designation.
•
A
: B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
J
: CD
for printed wiring boards:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
x
: parts mounted on the conductor side.
•
a
: Through hole.
•
: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A)
(Side A)
parts face are indicated.
19
19
CDX-L550X/L570X
(Page 21)
Ref. No.
Location
IC1
D-2
IC2
G-2
Q1
B-3
• Semiconductor
Location
20
20
CDX-L550X/L570X
IC B/D
IC B/D
• Refer to page 17 for Waveforms.
3-7. SCHEMATIC DIAGRAM — CD MECHANISM SECTION — • Refer to page 28 for IC Block Diagrams.
(Page 22)
Note:
• Voltage is dc with respect to
ground under no-signal conditions.
no mark : CD PLAY
no mark : CD PLAY
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