Sony MHC-V71, Руководство по обслуживанию

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MHC-V71/V71D
MHC-V71/V71D
40 40
Note on Schematic Diagram:
• All capacitors are in µF unless otherwise noted. (p: pF)
50 V or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and 1 /
4
W or less unless otherwise
specified.
•
2
: nonflammable resistor.
•
C
: panel designation.
• Note for Printed Wiring Boards and Schematic Diagrams
•
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 : TUNER
• Voltages are taken with a VOM (Input impedance 10 MΩ).
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
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
J
: AUDIO (DIGITAL)
F
: AUDIO (ANALOG)
f
: TUNER (FM)
L
: VIDEO
E
: USB
J
: CD/DVD PLAY
N
: MIC
a
: BLUETOOTH
Note on Printed Wiring Board:
•
X
: parts extracted from the component side.
• : parts extracted from the conductor side.
• : Pattern from the side which enables seeing.
(The other layer’s patterns are not indicated.)
Caution:
Pattern face side:
(Conductor Side)
Parts face side:
(Component Side)
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.
C
B
These are omitted.
E
Q
•
Indication of transistor
D
G
These are omitted.
S
Q
B
These are omitted.
C E
Q
B
These are omitted.
C E
Q
Note 1: When the MOTHERBOARD board is replaced,
spread the compound referring to “NOTE OF
REPLACING IC2002 ON THE MOTHERBOARD
BOARD AND THE COMPLETE MOTHERBOARD
BOARD” on servicing notes (page 6).
Note 2: When the MS-476 board is defective, exchange
the entire LOADING COMPLETE ASSY (T).
Note 4: When the complete MOTHERBOARD board
is replaced, be sure to refer to “DESTINATION
SETTING METHOD” on supplement-1.
Note 3: When the SENSOR board is defective, exchange
the SERVICE, TOP PANEL ASSY.
Ver. 1.1
The components identified by mark
0
or dotted line with mark
0
are critical for
safety.
Replace only with part number specified.
Les composants identifiés par une marque
0
sont critiques pour la sécurité.
Ne les remplacer que par une piéce portant
le numéro spécifié.
SYS SET
2018/05/30 01:52:46 (GMT+09:00)