Sony MHC-V50 Service Manual page 38

MHC-V50/V50D
• Note for Printed Wiring Boards and Schematic Diagrams
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: Parts on the pattern face side seen
(Conductor Side) from the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(Component Side) the parts face are indicated.
Indication of transistor
C
Q These are omitted.
B E
D
Q These are omitted.
G S
Q
B C E
These are omitted.
Q
B C E
These are omitted.
• Abbreviation
AUS : Australian model
CND : Canadian model
LA9 : Latin-American model
Note 1: When the DAMP board is replaced, spread the
compound referring to "NOTE OF REPLACING
THE IC2002 and IC2003 ON THE DAMP BOARD
A N D T H E C O M P L E T E D A M P B O A R D " o n
servicing notes (page 5).
Note 2: When the MS-476 board is defective, exchange
the entire CDM90 ASSY.
Note 3: When the complete MOTHERBOARD board
is replaced, refer to "NOTE OF REPLACING
MOTHERBOARD BOARD OR BLUETOOTH
MODULE OR RC-S730 (WW) BOARD" on page 6.
Note 4: When the SENSOR board is defective, exchange
the SERVICE, TOP PANEL ASSY.
MHC-V50/V50D
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
/ W or less unless otherwise
4
specifi ed.
• 2 : nonfl ammable resistor.
• C : panel designation.
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 piéce portant
le numéro spécifi é.
• 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.
: USB
L
: MIC
N
• Abbreviation
AUS : Australian model
CND : Canadian model
LA9 : Latin-American model
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