CFD-E55L
– 35 –
– 36 –
– 37 –
– 38 –
6-8. SCHEMATIC DIAGRAM – MAIN (TUNER) Section – • See page 38 for Waveform. • See page 52 for IC Block Diagrams.
Note on 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
/
4
W or less unless otherwise
specified.
•
f
: internal component.
• 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.
• 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
1.1 to 1.3 V
• 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
4 IC703 wa (MDP) (CD play mode)
1 V/DIV, 5 µs/DIV
6 IC703 rd (BCK), rf (BCKI)
(CD play mode)
2 V/DIV, 200 ns/DIV
7 IC703 ts (C4M) (CD play mode)
2 V/DIV, 100 ns/DIV
5 IC703 el (LRCK), r; (LRCKI)
(CD play mode)
2 V/DIV, 10 µs/DIV
*
2) FM/LW: 3.6 Vp-p
MW : 4.1 Vp-p
qs IC501 uf (TEX)
1 V/DIV, 10 µs/DIV
– MAIN Board (TUNER Section) –
0 IC2 wa (XOUT)
500 mV/DIV, 5 µs/DIV
Approx.
97 mVp-p
Approx.
115 mVp-p
2.6 Vp-p
7.6
µ
s
6 Vp-p
22.7
µ
s
6.1 Vp-p
470 ns
6.1 Vp-p
236 ns
8 IC703 th (WFCK) (CD play mode)
2 V/DIV, 50 µs/DIV
5.7 Vp-p
136
µ
s
9 IC703 u; (XTAI)
500 mV/DIV, 20 ns/DIV
1.8 Vp-p
59.2 ns
*
1) FM : 1.6 Vp-p
MW/LW: 2.1 Vp-p
– LCD Board –
qa IC501 ea (EXTAL)
2 V/DIV, 100 ns/DIV
240 ns
*
2 Vp-p
2.2 Vp-p
30.5
s
*
1 Vp-p
13.3
µ
s
(Page 47)
(Page 40)
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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