Circuit Boards Location - Sony CDX-C8850 Service Manual
Fm/am compact disc player
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Also See for CDX-C8850:
- Operating instructions manual (52 pages) ,
- Limited warranty (1 page) ,
- Service manual (82 pages)
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Q Q
3 7 6 3 1 5 1 5 0
4-5. CIRCUIT BOARDS LOCATION
tuner unit
(TU101)
DISC IN SW board
LOAD SW board
DISPLAY board
T E
L
1 3 9 4 2 2 9 6 5 1 3
w w w
SUB board
SERVO board
LIMIT SW board
MAIN board
POWER board
RELAY board
x
a o
y
.
i
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8
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS
AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
For schematic diagrams
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1
/
W or less unless otherwise
4
specified.
•
%
: indicates tolerance.
•
¢
: internal component.
• C : panel designation.
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 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: FM
f
: AM
J
: CD
Q
Q
3
7
6
3
For printed wiring boards
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
: Through hole.
®
•
: internal component.
¢
• b : 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 are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A)
parts face are indicated.
u 1 6 3
.
38
38
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2
4
9
9
8
• Waveforms
1
2
3
4
5
1
5
1
5
0
8
9
2
4
6
7
m
c o
2
9
9
(MODE:PLAY)
0V
Approx. 200mVp-p
!¢
(TE)
IC1
0V
Approx. 620mVp-p
!§
(FE)
IC1
1.2Vp-p
!¶
IC1
(RFO)
2.6Vp-p
7.6µsec
&ª
(MDP)
IC501
5.8Vp-p
9
8
2
9
9
22.7µsec
*¶
(LRCK)
IC501
5.7Vp-p
474nsec
(¡
(BCK)
IC501
3.2Vp-p
16.89MHz
`⁄‚‹
IC501
(XTAI)
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