Sony CX-VX55, Руководство по обслуживанию

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44 44
CX-VX55/VX77
CX-VX55/VX77
Ver. 1.1
• Waveforms
— MAIN Board — — DVD Board —
• Circuit Boards Location
SMPS board
MAIN board
DVD board
DISPLAY board
KEY board
JACK (AUDIO) board
MOTOR board
1
IC201
qk
(FEO)
0.2Vp-p
600mVp-p
200mV/DIV, 100ns/DIV
3
IC201
oh
(DVDRFIP)
100mV/DIV, 1ms/DIV
4
IC501
<z,n
(XTALO)
1.2Vp-p
1V/DIV, 10ns/DIV
2
IC201
wa
(TEO)
0.3Vp-p
500mV/DIV, 1ms/DIV
27MHz
1
IC101
qh
(CF2)
1.6Vp-p
9.8304MHz
12.288MHz
1V/DIV, 10ns/DIV
2
IC301
ih
(CLK IN)
1V/DIV, 10ns/DIV
1.8Vp-p
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. (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
specified.
• f : internal component.
•
2
: nonflammable resistor.
• C : panel designation.
for printed wiring boards:
•
X
: parts extracted from the component side.
•
x
: parts mounted on the conductor side.
•
f : internal component.
•
: Pattern from the side which enables seeing.
•
A
: B+ Line.
• B : B– Line.
• H : adjustment for repair.
• Voltage and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : DVD PLAY
( ) : DVD STOP
• 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.
E
: Y
a : CHROMA
d : COMPONENT VIDEO
F
: AUDIO
J
: CD
c : DVD
• Abbreviation
CET : East European & Russian model
E3 : 240V AC area in E model
E41 : 230V AC area in E model
AUS : Australian model
SP : Singapore model
RU : Russian model
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. Note: The components identified by mark 0 or dotted line
with mark
0
are critical for safety.
Replace only with part number specified.
• Abbreviation
CET : East European & Russian model
E3 : 240V AC area in E model
E41 : 230V AC area in E model
AUS : Australian model
SP : Singapore model
RU : Russian model