Sony MHC-V44D Service Manual page 37

• 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
AR : Argentina model
AUS : Australian model
E4 : African model
E12 : 220-240 V AC area in E model
E93 : 240 V AC area in E model
LA9 : Latin-American model
MY : Malaysia model
RU : Russian model
TH : Thai 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 SMPS board is replaced, spread the
compound referring to "NOTE OF REPLACING
THE IC965, Q908 AND Q909 ON THE SMPS
BOARD" on servicing notes (page 6).
Note 3: When the DAMP board is replaced, spread the
bond referring to "BOND FIXATION OF ELECTRIC
PARTS" on servicing notes (page 7).
Note 4: When the SMPS board is replaced, spread the
bond referring to "BOND FIXATION OF ELECTRIC
PARTS" on servicing note (page 7).
Note 5: When the MS-476 board is defective, exchange
the entire CDM90 ASSY.
Note 6: 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.
MHC-V44D
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 / 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.
• 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.
F : AUDIO (ANALOG)
L : USB
: AUDIO (DIGITAL)
J
: MIC
N
• Abbreviation
AR : Argentina model
AUS : Australian model
E4 : African model
E12 : 220-240 V AC area in E model
E93 : 240 V AC area in E model
LA9 : Latin-American model
MY : Malaysia model
RU : Russian model
TH : Thai model
37 37
MHC-V44D
Ver. 1.1