Sony CDX-V7800X Service Manual page 27
Fm/am multi media player
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Also See for CDX-V7800X:
- Operating instructions manual (58 pages) ,
- Installation/connections (4 pages) ,
- Service manual (56 pages)
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Q Q
3 7 6 3 1 5 1 5 0
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.
•
: internal component.
f
• 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.
• 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.
VIDEO TEST DISC: HLV-401 (TGIS-3)
Part No.: J-6095-031-A
Playback track No.: 34 (Full field color bar 75%)
• Signal path.
F
: FM
T E
f
: AM
L
1 3 9 4 2 2 9 6 5 1 3
J
: CD AUDIO
L : CD VIDEO
for printed wiring boards:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
: Through hole.
a
• b : Pattern from the side which enables seeing.
(The other layer's patterns are not indicated.)
Caution:
Pattern face side: Parts on the pattern 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.
w w w
.
http://www.xiaoyu163.com
x
a o
u 1 6 3
y
i
http://www.xiaoyu163.com
8
9
• Waveforms (Servo board)
(MODE:CD PLAY)
1
9
0V
Approx. 200mVp-p
(FE)
IC511
qf
2
q;
0V
Approx. 2Vp-p
IC518
IC511
qh
(TE)
3
qa
0.8Vp-p
IC514
wd
(RFDCO)
IC511
4
qs
4.8Vp-p
22.7µsec
IC514
IC516
uj
(LRCK)
5
qd
Q
Q
3
7
6
3
1
5
1
4.8Vp-p
474nsec
ia
(BCK)
IC516
IC514
6
qf
3.6Vp-p
16.9344MHz
2
(XCK)
IC515
7
qg
3.2Vp-p
7.6µsec
IC516
eg
(MDP)
IC514
8
qh
1Vp-p
12MHz
(EXTAL)
IC513
ra
IC514
c o
.
27
27
2
4
2
9
8
1.5Vp-p
27MHz
IC519
4
1Vp-p
H
qa
(CVBS)
3.5Vp-p
<znn
(DA-LRCK)
3.5Vp-p
<znm
( DA-BCK )
5
0
2.2Vp-p
8
9
2
4
9
8
16.9344MHz
<zn.
( DA-XCK )
1.2Vp-p
27MHz
IC514
<zmm
(VCLK)
3.5Vp-p
22.7µsec
<z,x
(CD-LRCK)
3.2Vp-p
474nsec
<z,v
(CD-BCK)
m
9
9
2
9
9
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