Circuit Boards Location - Sony CDX-1000RF Service Manual

4-5. CIRCUIT BOARDS LOCATION

DISC IN SW board
LOAD SW board
DISPLAY board
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SUB board
LIMIT SW board
MAIN board
SERVO board
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 diagram:
• 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.
• C : panel designation.
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
• U : B+ Line.
• H : adjustment for repair.
• 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
for printed wiring boards:
• X : parts extracted from the component side.
• b : Pattern from the side which enables seeing.
15 15
• Waveforms
(MODE:PLAY)
1
0V
Approx. 620mVp-p
1 (FEO)
IC2
2
1.2Vp-p
IC2 ea (RFO)
3
0V
Approx. 200mVp-p
IC2 rs (TEO)
4
2.6Vp-p
7.6µsec
IC1 3 (MDP)
5
5.8Vp-p
22.7µsec
(LRCK)
IC1 w;
6
5.7Vp-p
474nsec
IC1 ws (BCK)
7
3.2Vp-p
16.89MHz
ef (XTAI)
IC1