Read Sony MEX-DV900 / MEX-DV90EE Service Manual online
MEX-DV90EE/DV900
MEX-DV90EE/DV900
22
22
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
• All capacitors are in μF unless otherwise noted. (p: pF)
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
specifi ed.
• f :
internal
component.
•
C : panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
(In addition to this, the necessary note is printed in each block.)
•
A : B+ Line.
• Power voltage is dc 14.4V and fed with regulated dcpow-
er supply from ACC and BATT cords.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : TUNER (FM/AM)
( ) : DVD PLAY
• Voltages are taken with VOM (Input impedance 10 M
( ) : DVD PLAY
• Voltages are taken with VOM (Input impedance 10 M
Ω).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: DVD/CD PLAY (AUDIO)
L : DVD/CD PLAY (VIDEO)
f
:
TUNER
(FM/AM)
j
:
AUX
IN
• Abbreviation
IND
IND
: Indian model
For Printed Wiring Boards.
Note:
•
•
X : parts extracted from the component side.
•
Y : parts extracted from the conductor side.
• f : internal component.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Parts face side:
(Conductor Side)
Pattern face side:
(Component Side)
Parts face side:
(Conductor Side)
Pattern face side:
(Component Side)
Parts on the parts face side seen from
the pattern face are indicated.
Parts on the pattern face side seen from
the parts face are indicated.
the pattern face are indicated.
Parts on the pattern face side seen from
the parts face are indicated.
• SERVO board is multi-layer printed board.
However, the patterns of intermediate-layer have not been
However, the patterns of intermediate-layer have not been
included in this diagrams.
• Abbreviation
IND
IND
: Indian model
Note: The components identifi ed by mark
0 or dotted
line with mark
0 are critical for safety.
Replace only with part number specifi ed.
• Waveforms
– SERVO Board –
– SERVO Board –
20.8
μs
3.9 Vp-p
IC4 [D[ (ALRCLK)
2 V/DIV, 10
μs/DIV
IC4 [DY (ABCLK)
2 V/DIV, 100 ns/DIV
324 ns
4.6 Vp-p
IC4 [DW (AMCLK)
2 V/DIV, 20 ns/DIV
4.9 Vp-p
81.6 ns
IC4 [C (XO)
500 mV/DIV, 10 ns/DIV
37 ns
1.2 Vp-p
IC4 [
[ (DAC6 (CVBS))
(Color bar)
(Color bar)
500 mV/DIV, 20
μs/DIV
H
1.1 Vp-p
IC4 [D (RFP), [W (RFN)
(DVD play mode)
(DVD play mode)
200 mV/DIV, 200 ns/DIV
0.4 Vp-p
RB
IC503 RB (XCOUT)
2 V/DIV, 20
μs/DIV
30.8
μs
2.9 Vp-p
RT
IC503 RE (XOUT)
2 V/DIV, 100 ns/DIV
168 ns
3.6 Vp-p
RE
IC601 (SW)
10 V/DIV, 2
μs/DIV
2.8
μs
15 Vp-p
RG
IC201 (XTO)
1 V/DIV, 50 ns/DIV
115 ns
2 Vp-p
RH
IC701 (VOUT)
(Color bar)
(Color bar)
1 V/DIV, 20
μs/DIV
H
2.5 Vp-p
– MAIN Board –
Ver. 1.1
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen from
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
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