Sony CDX-MP450X Service Manual ▷ View online
25
CDX-MP450X
3-5. BLOCK DIAGRAM — DISPLAY SECTION —
76
77
11
80
4
3
1
59
25
53
4-51
52-55
65
66
62
63
64
23
7
54
24
XOUT
XIN
BU+5V
BAND SW
RESET
NOSE
DOOR
SIRCS
EZ SEL
ROT IN
LSW916
LCD CE
LCD CKO
LCD SO
DOOR IND
ILL ON
KEY1
KEY2
RE1
RE2
BATT
POWER
CONTROL
Q919,920
LCD901
LIQUID CRYSTAL
DISPLAY PANEL
KEY MATRIX
LSW901-907,909-915,
917-922
43
42
RE901
ROTARY
ENCODER
BATT
POWER
CONTROL
Q917,918
CE
S04-51
COM1-4
CL
DI
X801
4.5MHz
S801
RESET
S803
(NOSE DET)
CNP902
(REMOTE IN)
SYSTEM CONTROL
IC801(2/2)
LCD DRIVE
IC901
Z
IR
RECEIVER
IC951
REG
Q921
LED905
LED910–913
LSW916
LSW901–907
LSW917–922
LSW909–915
26
CDX-MP450X
tuner unit
(TU601)
(TU601)
IN SELF SW board
DISPLAY board
RELAY board
SERVO board
MAIN board
SL SW board
3-6. CIRCUIT BOARDS LOCATION
27
27
CDX-MP450X
•
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 AUDIO
for printed wiring boards:
• X
: parts extracted from the component side.
• Y
: parts extracted from the conductor side.
•
a
: Through hole.
•
: Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Note: The components identified by mark
0
or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
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.
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.
27MHz
IC519
4
IC514
<znn
(DA-LRCK)
qs
qa
9
q;
1.5Vp-p
3.5Vp-p
3.5Vp-p
IC514
<znm
(DA-BCK)
qg
qd
qf
• Waveforms (Servo board)
Approx. 200mVp-p
IC511
qf
(FE)
IC511
wd
(RFDCO)
4
3
1
2
Approx. 2Vp-p
IC511
qh
(TE)
4.8Vp-p
0.8Vp-p
IC516
uj
(LRCK)
IC516
ia
(BCK)
IC516
eg
(MDP)
8
7
5
6
4.8Vp-p
16.9344MHz
IC515
2
(XCK)
3.6Vp-p
1Vp-p
3.2Vp-p
12MHz
IC513
ra
(EXTAL)
0V
0V
22.7µsec
474nsec
7.6µsec
16.9344MHz
IC514
<zn.
(DA-XCK)
2.2Vp-p
1.2Vp-p
27MHz
IC514
<zmm
(VCLK)
3.5Vp-p
IC514
<z,x
(CD-LRCK)
22.7µsec
IC514
<z,v
(CD-BCK)
3.2Vp-p
474nsec
28
28
CDX-MP450X
3-7. PRINTED WIRING BOARDS — CD MECHANISM SECTION —
• Semiconductor
Location
Ref. No.
Location
D511
B-5
D516
D-4
IC513
F-6
IC519
F-7
IC520
B-7
IC521
D-6
Q511
B-2
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