Schematic Diagram - Main (Tuner) Section - Sony CFD-E55L Service Manual

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6-8. SCHEMATIC DIAGRAM – MAIN (TUNER) Section – • See page 38 for Waveform.
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3
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w w w
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• See page 52 for IC Block Diagrams.
1 5 1
6 3
4 2 2 9 6 5 1 3
x a o
y
. i
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(Page 47)
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
(Page 40)
and tantalums.
• All resistors are in Ω and
1 / W or less unless otherwise
4
specified.
• : internal component.
f
• U : B+ Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
( ) : MW/LW
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
u 1 6 3
• 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
: MW/LW
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2 4
8 9 9
• Waveforms
– CD Board –
1 IC701 1 (FEO) (CD play mode)
20 mV/DIV, 1 µs/DIV
2 IC701 ed (RF O) (CD play mode)
500 mV/DIV, 1 µs/DIV
3 IC701 rg (TEO), rj (TEI)
(CD play mode)
50 mV/DIV, 1 µs/DIV
1 5 1 5 0 8 9 2
4 IC703 wa (MDP) (CD play mode)
1 V/DIV, 5 µs/DIV
7.6 µ s
5 IC703 el (LRCK), r; (LRCKI)
(CD play mode)
2 V/DIV, 10 µs/DIV
m
c o
22.7 µ s
– 37 –
CFD-E55L
2
8 9 9
– MAIN Board (TUNER Section) –
6 IC703 rd (BCK), rf (BCKI) 0 IC2 wa (XOUT)
(CD play mode) 500 mV/DIV, 5 µs/DIV
2 V/DIV, 200 ns/DIV
Approx. * 1 Vp-p
97 mVp-p
6.1 Vp-p
13.3 µ s
470 ns * 1) FM : 1.6 Vp-p
MW/LW: 2.1 Vp-p
7 IC703 ts (C4M) (CD play mode)
2 V/DIV, 100 ns/DIV
– LCD Board –
qa IC501 ea (EXTAL)
2 V/DIV, 100 ns/DIV
1.1 to 1.3 V
6.1 Vp-p
* 2 Vp-p
236 ns
4 9 8 IC703 th (WFCK) (CD play mode) 8 2 9 9
2 V/DIV, 50 µs/DIV
240 ns
2) FM/LW : 3.6 Vp-p
*
Approx.
MW : 4.1 Vp-p
115 mVp-p
qs IC501 uf (TEX)
5.7 Vp-p 1 V/DIV, 10 µs/DIV
2.2 Vp-p
136 µ s
9 IC703 u; (XTAI)
2.6 Vp-p
500 mV/DIV, 20 ns/DIV
30.5 µ s
1.8 Vp-p
59.2 ns
6 Vp-p
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