HCD-DX80
2323
6-3. NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
(In addition to this, the necessary note is printed in each block)
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• : Pattern from the side which enables seeing.
• indication of transistor.
C
B
These are omitted.
E
Q
B
These are omitted.
CE
Q
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.
• A : B+ Line.
• B : 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
AR : Argentina model
BR : Brazilian model
E2 : 120 V AC Area in E model
E51 : Chilean and Peruvian model
MX : Mexican model
SP : Singapore model
Note: The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
MOTOR board
ADDRESS SENSOR board
DRIVER board
MAIN TRANS board
VIDEO SWITCH board
SENSOR board
BD board
SUB TRANS board
MAIN board
POWER AMPLIFIER boar
LEAF
SW board
HEAD (A) board
HEAD (B) board
PANEL board
CD-SWITCH board
PAD SWITCH board
• Circuit Boards Location
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