Circuit Boards Location - Sony HCD-MD555 Service Manual

7-2. CIRCUIT BOARDS LOCATION

LED board
POWER KEY board
TRANS-C board
PANEL board
ENCORDER board (B)
HP board
ENCORDER board (A)
HEAD RELAY board
MECH RELAY board
SW board
DISC SW board
BD (MD) board
CLAMP MOTOR board
SENSOR 2 board
SENSOR board
OUT SW board
TRANS-A board
TUNER board
RDS board (AEP, UK)
TRANS-B board
MAIN board
WM board
SP board
AMP board
REG board
HEAD SW board
TRANS-D board (JE, HK, SP, MY)
ELEVATOR RELAY board
IN SW board
BD (CD) board
INT/COUNT SW board
CONNECTOR board
LOAD MOTOR board
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Note on Schematic Diagrams:
• All capacitors are in µF unless otherwise noted. pF: µµF
50 WV or less are not indicated except for electrolytics
and tantalums.
• All resistors are in Ω and
1 / W or less unless otherwise
4
specified.
• % : indicates tolerance.
• : internal component.
¢
• 2 : nonflammable resistor.
• 1 : fusible resistor.
• C : panel designation.
• U : B+ Line.
• V : B– Line.
Note: The components identified by mark ! or dotted line
with mark ! are critical for safety.
Replace only with part number specified.
• Voltages are taken with a VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal produc-
tion tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal produc-
tion tolerances.
• Circled numbers refer to waveforms.
• Signal path.
F : TUNER
J
: CD PLAY
d
: MD PLAY
E
: MD REC (ANALOG)
a
: MD REC (DIGITAL)
• Abbreviation
SP : Singapore model.
MY : Malaysia model.
JE : Tourist model.
HK : Hong Kong model.
HCD-MD555
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• : Through hole.
®
• : internal component.
¢
• b : Pattern of the rear side.
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