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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.
Note:
The components identified by mark 0 or dotted line
with mark 0 are critical for safety.
Replace only with part number specified.
• 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 conditions.
BD board section and VIDEO board section.
no mark: CD PLAY
Other board section
no mark: TUNER (FM/AM)
(
): TAPE PLAY
<
>: TAPE REC
[
]: CD PLAY
• 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 (FM/AM)
E
: TAPE PLAY (DECK A)
d
: TAPE PLAY (DECK B)
G
: RECORD
J
: CD PLAY
g : VIDEO
Note on Printed Wiring Boards:
• X : parts extracted from the component side.
•
: Pattern from the side which enables seeing.
(The other layers´ Patterns are not indicated.)
• Indication of transistor.
C
Q
These are omitted.
B
E
Q
B
C E
These are omitted.
Q
B
C
E
These are omitted.
WAVEFORMS
r
– MAIN BOARD –
1
IC501 qa (XC-OUT)
3.0Vp-p
32KHz
VOL/DIV : 1V AC
TIME/DIV : 10 µ sec
2
IC501 qd (X-OUT)
2.0Vp-p
16MHz
VOL/DIV : 1V AC
TIME/DIV : 50nsec
3
CN321 2
TAPE REC only
24Vp-p
VOL/DIV : 10V AC
18 µ sec
TIME/DIV : 5 µ sec
4
CN321 3
TAPE REC only
36Vp-p
18 µ sec
VOL/DIV : 10V AC
TIME/DIV : 5 µ sec
– PANEL FL BOARD –
1
IC601 is (X OUT)
3.0Vp-p
VOL/DIV : 1V AC
4MHz
TIME/DIV : 0.2 µ sec
23
23
– VIDEO BOARD –
– BD BOARD –
1
1
IC103 qg (RFAC)
IC505
(XTAO)
150
2.5 Vp-p
33.8688 MHz
VOL/DIV : 1V AC
TIME/DIV : 20nsec
2
2
IC505
(CLKB)
IC103 qh (FE)
207
2.8 Vp-p
27 MHz
VOL/DIV : 1V AC
TIME/DIV : 20nsec
3
IC505
(RFAC)
3
173
IC103 qk (TE)
0.8 Vp-p
VOL/DIV : 0.2V AC
TIME/DIV : 0.5 µ sec
4
IC505 6 (EPSIG)
0.8 Vp-p
H
VOL/DIV : 0.5V AC
TIME/DIV : 20 µ sec
5
Q301 E
0.8 Vp-p
H
VOL/DIV : 0.5V AC
TIME/DIV : 20 µ sec
6
IC307 6 (VOUT)
1.0 Vp-p
H
VOL/DIV : 0.5V AC
TIME/DIV : 20 µ sec
HCD-XGV50
0.8 Vp-p
VOL/DIV : 0.2V AC
TIME/DIV : 0.5 µ sec
0.15 Vp-p
VOL/DIV : 0.2V AC
TIME/DIV : 0.2msec
0.7 Vp-p
VOL/DIV : 1V AC
TIME/DIV : 0.2msec
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