18
18
CDX-F7710/F7710S/F7715X/F7750/F7750S
CDX-F7710/F7710S/F7715X/F7750/F7750S
• NOTE FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS
3-4. CIRCUIT BOARDS LOCATION
MAIN board
DISPLAY board
SENSOR board
SERVO board
SPEAKER board
tuner unit
(TUX501)
RELAY board
• WAVEFORMS
— MAIN BOARD —
— SERVO BOARD —
(CD PLAY)
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed
in each block.)
For schematic diagrams.
Note:
• All capacitors are in µF unless otherwise noted. (p: pF)
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.
For printed wiring boards.
Note:
•
X
: parts extracted from the component side.
•
Y
: parts extracted from the conductor side.
•
a
: Through hole.
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
•
A
: B+ Line.
•
B
: B– Line.
•
H
: adjustment for repair.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• CD mechanism section (1/2), (2/2)
no mark : CD PLAY
• Main (1/4), (2/4), (3/4), (4/4) and Display sections
no mark : FM
(
) : AM/MW/LW
<
> : CD PLAY
∗
: Impossible to measure
• Voltages are taken with a VOM (Input impedance 10 M
Ω
).
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.
J
: CD PLAY
F
: FM
f
: AM/MW/LW
L
: BUS AUDIO
Caution:
Pattern face side: Parts on the pattern face side seen from the
(Side B)
pattern face are indicated.
Parts face side: Parts on the parts face side seen from the
(Side A)
parts face are indicated.
Q
C
These are omitted
E
B
E
These are omitted
C
B
C
These are omitted
B
E
Note:
The components identi-
fied by mark
0
or dotted
line with mark
0
are criti-
cal for safety.
Replace only with part
number specified.
Note:
Les composants identifiés par
une marque
0
sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
1
IC2
4
(FEI)
Approx.
1Vp-p
0 V
0.6 Vp-p
16.9344 MHz
Approx. 100 mVp-p
50 mV/DIV, 5 msec/DIV
0.5 V/DIV, 0.5
µ
sec/DIV
2
IC2
6
(TEI)
200 mV/DIV, 5 msec/DIV
6
IC2
oh
(FPI2),
0.5 V/DIV, 0.5
µ
sec/DIV
Approx. 400 mVp-p
3
IC2
wd
(XI)
0.2 V/DIV, 0.2
µ
sec/DIV
7
IC3
ia
(X1)
0.5 V/DIV, 0.2
µ
sec/DIV
1.1 Vp-p
12 MHz
4
IC2
uj
(RFI)
0.5 V/DIV, 0.5
µ
sec/DIV
5
IC2
of
(FNI2),
og
(FNI1)
1.5 Vp-p
oj
(FPI1)
1.5 Vp-p
0 V
— DISPLAY BOARD —
1.1 Vp-p
8.664 MHz
1
IC550
9
(XTI)
0.5 V/DIV, 0.2
µ
sec/DIV
0.7 Vp-p
32.768 kHz
2
IC303
uk
(X1)
0.2 V/DIV, 20
µ
sec/DIV
1.1 Vp-p
18.432 MHz
3
IC801
i;
(X0)
0.5 V/DIV, 0.1
µ
sec/DIV
0.6 Vp-p
5 MHz
1
IC901
qs
(X1)
0.2 V/DIV, 0.2
µ
sec/DIV
