HCD-BX9/DX9
2121
SECTION 7
DIAGRAMS
7-1. CIRCUIT BOARD LOCATION
Note on Schematic Diagram:
• 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
/
4
W or less unless otherwise
specified.
•
f
: internal component.
• C : panel designation.
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• b : Pattern from the side which enables seeing.
• Indication of transistor.
• U : B+ Line.
• V : B– Line.
• H : adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• 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 : FM
f : AM
E : PB (DECK A)
d : PB (DECK B)
G : REC (DECK B)
J : CD
c : digital out
• Abbreviation
AUS : Australian model
G : German model
EA : Saudi Arabia model
MY : Malaysia model
SP : Singapore model
MX : Mexican model
AR : Argentina model
AED : North European model
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
B
These are omitted.
CE
Q
PANEL Board
LEAF SW Board
HEAD (A) Board
HEAD (B) Board
TRANS Board
CD SWITCH Board
SUB-TRANS Board
BD Board
DRIVER Board
MOTOR Board
SENSOR Board
MAIN Board
POWER AMP Board
• WAVEFORMS
C
B
These are omitted.
E
Q
– BD BOARD –– MAIN BOARD –
– PANEL BOARD –
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
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