MEX-5DI
4-6. CIRCUIT BOARDS LOCATION
THIS NOTE IS COMMON FOR PRINTED WIRING
BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is
printed in each block.)
SERVO board
for 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.
SWITCH board
•
•
%
f
: indicates tolerance.
: internal component.
• C : panel designation.
Note:
Note:
Les composants identifiés par
une marque 0 sont critiques
pour la sécurité.
Ne les remplacer que par une
piéce portant le numéro
spécifié.
The components identi-
fied by mark 0 or dotted
line with mark 0 are criti-
cal for safety.
Replace only with part
number specified.
• A : B+ Line.
• Power voltage is dc 14.4V and fed with regulated dc power
supply from ACC and BATT cords.
• 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.
MAIN board
DISPLAY board
DIGITAL board
• Circled numbers refer to waveforms.
• Signal path.
F
f
J
: FM
: AM/MW/LW
: CD
for printed wiring boards:
• X : parts extracted from the component side.
• Y : parts extracted from the conductor side.
• Waveforms
— Servo Board —
(MODE: CD PLAY)
•
•
•
x
: parts mounted on the conductor side.
: Through hole.
: Pattern from the side which enables seeing.
— Main Board —
a
5
6
7
8
1
1
(The other layer’s patterns are not indicated.)
2.8Vp-p
2.2Vp-p
2.8Vp-p
3.5Vp-p
0.7Vp-p
Caution:
Pattern face side: Parts on the pattern face side seen from the
22.7µsec
4.332MHz
(Side B)
pattern face are indicated.
(RFAC)
(LRCK)
(OSCO)
IC2
IC1
IC101
Parts face side: Parts on the parts face side seen from the
qg
ih
4
(Side A)
parts face are indicated.
2
3
4
2
3
4
474msec
32.768kHz
Approx. 200mVp-p
IC501
(X0A)
(FE)
(BCK)
o;
IC2
IC1
uf
qh
3Vp-p
0V
Approx. 600mVp-p
16.9344MHz
3.68MHz
(TE)
(XTAO)
IC501
(X0)
IC2
IC1
qk
of
os
2.2Vp-p
3.5Vp-p
3.3Vp-p
7.6µsec
4MHz
12.288MHz
(MDP)
IC901
(XOUT)
IC1
(XTXAL)
rd
IC11
4
yg
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