Read Sony DXA-WZ88D / MHC-WZ88D Service Manual online
12
DXA-WZ88D
SECTION 4
DIAGRAMS
For Schematic Diagrams.
Note:
• All capacitors are in
Note:
• All capacitors are in
µ
F unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics and
tantalums.
tantalums.
• All resistors are in
Ω
and
1
/
4
W or less unless otherwise
specified.
•
f
: internal component.
•
2
: nonflammable resistor.
•
5
: fusible resistor.
•
C
: panel designation.
•
A
: B+ Line.
•
B
: B– Line.
•
H
: adjusment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
Voltage variations may be noted due to normal production
tolerances.
No mark: DVD STOP
tolerances.
No mark: DVD STOP
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F
: AUDIO
E
: PB (TAPE)
a
: REC (TAPE)
• Abbreviation
AR
: Argentine model.
AUS
: Australian model.
E3
: 240 V AC area in E model.
E12
: 220-240 V AC area in E model.
E13
: 220-230 V AC area in E model.
E15
: 220-240 V AC area in E model.
E51
: Chilean and peruvian models.
EA
: Saudi Arabia model.
PL
: Phillippines model.
SP
: Singapore and Malaysia models.
TH
: Thai model.
For Printed Wiring Boards.
Note:
•
Note:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
: Pattern from the side which enables seeing.
• Indication of transistor.
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.)
C
B
These are omitted.
E
Q
B
These are omitted.
C
E
Caution:
Pattern face side: Parts on the pattern face side seen from
(Side B)
Pattern face side: Parts on the pattern face side seen from
(Side B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side A)
the 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.
1
Q301 collector (TAPE B REC)
11.2
µ
s
15.9 Vp-p
5 V/DIV, 4
µ
s/DIV
• Waveforms
– TC MAIN Board –
– TC MAIN Board –
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