Sony D-V55, Руководство по обслуживанию

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D-V55
6-5. SCHEMATIC DIAGRAM (MPEG SECTION) r Refer to page 41 for IC Block Diagram.
Note:
• All capacitors are in
µ
F unless otherwise noted. pF:
µµ
F
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.
• A : B+ Line.
• Power voltage is dc 6 V and fed with regulated dc power
supply from external power voltage jack (J401).
• Voltages and waveforms are dc with respect to ground
under no-signal conditions.
no mark : VIDEO CD PLAY
(
) : AUDIO CD PLAY
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
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.
J : CD
L : VIDEO
r Waveforms – MAIN Section –
1
IC501 !¶ (RFO)
2
3
4
5
6
VOLT/DIV : 200 mV AC
TIME/DIV : 500 ns
0.5 -0.9
Vp-p
IC501 !§ (FE)
VOLT/DIV : 50 mV AC
TIME/DIV : 5 ms
IC501
!¢
(TE)
VOLT/DIV : 200 mV AC
TIME/DIV : 5 ms
IC601 @º (VCKI) VOLT/DIV : 0.5 V AC
TIME/DIV : 20ns
IC601 $∞ (LRCK)
VOLT/DIV : 1 V AC
TIME/DIV : 5
µ
s
Approx.
120 mVp-p
Approx.
500 mVp-p
940 mVp-p
16.9344 MHz
3.5 Vp-p
23.15
µ
s
IC601
$¶
(BCLK) VOLT/DIV : 1 V AC
TIME/DIV : 0.1
µ
s
3.2 Vp-p
483 ns
7
IC601
^™
(XTAI)
8
9
10
11
12
VOLT/DIV : 0.5 V AC
TIME/DIV : 20 ns
IC601 ^§ (FSTI)
VOLT/DIV : 0.5 V AC
TIME/DIV : 50 ns
IC681
!∞
(LRCK) VOLT/DIV : 2 V AC
TIME/DIV : 10
µ
s
IC681 !¢ (BCLK) VOLT/DIV : 1 V AC
TIME/DIV : 200 ns
IC681 9 (CLK)
VOLT/DIV : 0.5 V AC
TIME/DIV : 20 ns
IC322 !£ (CKO)
VOLT/DIV : 0.2 V AC
TIME/DIV : 20 ns
13
IC322
!§
(XTLO)
14
15
16
17
18
VOLT/DIV : 2 V AC
TIME/DIV : 20 ns
IC322 @£ (BCLK) VOLT/DIV : 1 V AC
TIME/DIV : 0.1
µ s
IC322 @¢ (LRCK)
VOLT/DIV : 1 V AC
TIME/DIV : 10
µ
s
IC801
*¡
(OSC1) VOLT/DIV : 0.5 V AC
TIME/DIV : 100 ns
IC502 @¶ (OUT)
VOLT/DIV : 1 V AC
TIME/DIV : 2
µ s
IC411
1
(EXT) VOLT/DIV : 2 V AC
TIME/DIV : 1
µ
s
19
IC421
5
(EXT)
20
21
IC802 8 (LX)
Q421 C
940 mVp-p
16.9344 MHz
3.3 Vp-p
22.9
µ
s
3.2 Vp-p
488 ns
940 mVp-p
16.9344 MHz
0.6 Vp-p
16.9344 MHz
3.7 Vp-p
16.9344 MHz
3.2Vp-p
488 ns
3.3 Vp-p
22.9 µ s
3.1 Vp-p
11.5
µ
s
5.9 Vp-p
28 kHz
3.2 Vp-p
180 kHz
4.3 Vp-p
3.8 kHz
3.6 Vp-p
5.78
µ
sec
1.5 Vp-p
4.19 MHz
VOLT/DIV : 1 V AC
TIME/DIV : 2
µ s
VOLT/DIV : 1 V AC
TIME/DIV : 0.1 ms
VOLT/DIV : 1 V AC
TIME/DIV : 2
µ
s
1.6 Vp-p
91.6 ns
r Waveforms – MPEG Section –
1
IC701 (º (TBCK)
VOLT/DIV : 1 V AC
TIME/DIV : 200 ns
2
IC701
(¡
(ATFS)
VOLT/DIV : 1 V AC
TIME/DIV : 10
µ
s
3
IC701 $£
(PCLK2XSCN)
VOLT/DIV : 2 V AC
TIME/DIV : 1 ms
4
IC721 #¡
(CVOUT)
VOLT/DIV : 500 mV AC
TIME/DIV : 20
µ s
5
IC721 #ª (XO)
VOLT/DIV : 2 V AC
TIME/DIV : 20 ns
6
IC721
$™
(CK270)
VOLT/DIV : 2 V AC
TIME/DIV : 20 ns
7
IC723 1 (OUT)
VOLT/DIV : 500 mV AC
TIME/DIV : 20
µ
s
3.2 Vp-p
472 ns
3.2 Vp-p
22.7
µ
s
5.2 Vp-p
27 MHz
1.0 Vp-p
H
4.2 Vp-p
27 MHz
3.9 Vp-p
27 MHz
2.0 Vp-p
H