Sony HCD-DH50R Service Manual page 30

HCD-DH50R/DH70SWR
Ver. 1.1
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
For Printed Wiring Boards.
Note:
• X : Parts extracted from the component side.
• Y : Parts extracted from the conductor side.
• : Internal component.
f
• : Pattern from the side which enables seeing.
(The other layers' 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.
Caution:
Pattern face side: Parts on the pattern face side seen
(SIDE B) from the pattern face are indicated.
Parts face side: Parts on the parts face side seen from
(SIDE A) the parts face are indicated.
• DMB20 board is multi-layer printed board.
However, the patterns of intermediate-layers have not
been included in this diagrams.
• Indication of transistor.
C
Q
These are omitted.
B E
Q
B C E
These are omitted.
• Abbreviation
KR : Korean model
RU : Russian model
SP : Singapore model
TH : Thai model
TW : Taiwan model
HCD-DH50R/DH70SWR
For Schematic Diagrams.
Note:
• All capacitors are in μF unless otherwise noted. (p: pF) 50
WV or less are not indicated except for electrolytics and
tantalums.
• All resistors are in Ω and 1/4 W or less unless otherwise
specifi ed.
• : Internal component.
f
• 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.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
– DMB20 Board –
no mark : DVD PLAY
( ) : CD PLAY
– Other Boards –
no mark : TUNER (FM/AM)
• Voltages are taken with 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.
: CD/DVD PLAY
J
F : AUDIO
: TUNER (FM/AM)
f
: VIDEO
E
: USB
O
: AUDIO IN
h
: MIC
N
• Abbreviation
KR : Korean model
RU : Russian model
SP : Singapore model
TH : Thai model
TW : Taiwan model
• Circuit Boards Location
POW-SUPPLY board
MS-214 board
JUNCTION board
KEY board
JACK board
PANEL board
30 30
SP-CONN board
DMB20 board
MAIN board
USB board
TUNER (FM/AM)
VIDEO-OUT board