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THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
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
/
W or less unless otherwise
4
specified.
•
: internal component.
f
• 2 : nonflammable resistor.
• 5 : fusible resistor.
• C : panel designation.
The components identified by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specified.
• U : B+ Line.
• V : B– Line.
• 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.
• Signal path.
F
: TUNER
4-1. CIRCUIT BOARDS LOCATION
SPEAKER TERMINAL board
SENSOR board
POWER board
DISPLAY board
HEADPHONE JACK board
SECTION 4
DIAGRAMS
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
• b : Pattern from the side which enables seeing.
Caution:
Pattern face side:
Parts on the pattern face side seen from
(Side A)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(Side B)
the parts face are indicated.
• Indication of transistor.
C
These are omitted.
Q
B
E
Q
B
C E
These are omitted.
RDS board
MAIN board
DAC board
DIGITAL board
• WAVEFORMS
— RDS BOARD —
1
IC52 qf (XO)
1.85Vp-p
0.24 µsec
(4.33 MHz)
— DAC BOARD —
1
IC301 eg (XOUT)
6 Vp-p
44 nsec
(22 MHz)
17
17
— DIGITAL BOARD —
1
IC109 es (XO)
2.6 Vp-p
40 nsec
(24.576MHz)
2
IC114 qd (XOUT)
3.5 Vp-p
(10MHz)
0.1µsec
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