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MHC-V21/V21D
MHC-V21/V21D
36
36
Ver. 1.1
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.
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
and
1
/
4
W or less unless otherwise
specifi ed.
•
2
: nonfl ammable 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.
L
: USB
N
: MIC
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.)
C
B
These are omitted.
E
Q
t
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 2:
When the MS-476 board is defective, exchange
the entire LOADING COMPLETE ASSY (T).
Note 3:
When the complete MOTHERBOARD board
is replaced, be sure to refer to “DESTINATION
SETTING METHOD” on page 5.
Note 1:
When the MOTHERBOARD board is replaced,
spread the compound referring to “NOTE
O F R E P L A C I N G T H E I C 2 0 0 2 O N T H E
MOTHERBOARD BOARD AND THE COMPLETE
MOTHERBOARD BOARD” on servicing notes
(page 7).
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.
Note:
Les composants identifi és par une marque
0
sont critiques pour la sécurité.
Ne les remplacer que par une pièce portant
le numéro spécifi é.
• Circuit Boards Location
PANEL board
MS-476 board
SPK LED board
SMPS board
MIC USB board
NFC board
MOTHERBOARD board
IR board
SYS SET
2018/08/28 21:56:45 (GMT+09:00)