Circuit Boards Location - Sony CDX-4240R Service Manual

4-5. CIRCUIT BOARDS LOCATION
tuner unit
(TU601)
IMIT SW board
DISPLAY board
SERVO board
—29~
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 pF unless otherwise noted. pF: nuiF
50 WV or less are not indicated except for electrolytics
and tantalums.
¢ All resistors are in Q and '/s W or less unless otherwise
specified.
¢ % _ : indicates tolerance.
4 __: internal component.
[1 : panel designation.
Note: The components identified by mark A or dotted line
with mark A\ are critical for safety.
Replace only with part number specified.
: 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 MQ).
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.
o> =:FM
=> Mw
we :CD
¢ Abbreviation
G : German model.
for printed wiring boards:
* o—— : parts extracted from the component side.
° : parts extracted from the conductor side.
* © : Through hole.
: Pattern from the side which enables seeing.
(The other layer's patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattem 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.
¢ Abbreviation
G : German model.
—30-
e Waveforms (MODE:PLAY)
Approx. 620mVp-p
IC2 4) (FEO)
@
OXKKAKKKKAKX)
ARE RRE ob.
RXR RKXNN)
IC2 @) (RFO)
Approx. 200mVp-p
IC2 @) (TEO)
@
Lo te
2.6Vp-p
a
}~«————| 7.6usec
IC1 (3) (MDP)
©
+r
5.8Vp-p
|| 22.7,18ec
IC1 @0) (LRCK)
©
}~«——+| 474nsec
IC1 @ (BCK)
16.89MHz
IC1 @4 (XTAl)