CDX-GT49UM/GT490U/GT490US/GT494U
CDX-GT49UM/GT490U/GT490US/GT494U
17
17
For Schematic Diagrams:
Note:
•
All capacitors are in
P
F unless otherwise noted. (p: pF)
50 WV or less are not indicated except for electrolytics
and tantalums.
•
All resistors are in
:
and
1
/
4
W or less unless otherwise
speci
fi ed.
•
f
: internal component.
•
C
: panel designation.
THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS
AND SCHEMA
TIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
•
A
: B+ Line.
•
B
: B– Line.
•
V
oltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark
: FM
(
)
:
AM
<
>
: CD PLA
Y
*
: Impossible to measure
•
V
oltages are taken with a VOM (Input impedance 10 M
:
).
V
oltage variations may be noted due to normal production
tolerances.
•
W
aveforms are taken with a oscilloscope.
V
oltage variations may be noted due to normal production
tolerances.
•
Circled numbers refer to waveforms.
• Signal
path.
J
:
CD
F
:
FM
f
:
AM
L
:
AUX
c
:
USB
• Abbreviation
AR
:
Argentina
model
EA
: Saudi
Arabia model
MX
: Mexican model
For Printed W
iring 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.)
• W
aveforms
– MAIN Board –
Caution:
Pattern face side:
(SIDE B)
Parts face side:
(SIDE A)
Parts on the pattern face side seen from
the pattern face are indicated.
Parts on the parts face side seen from
the parts face are indicated.
Note:
The components identi
fi
ed by mark
0
or dotted
line with mark
0
are critical for safety
.
Replace only with part number speci
fi ed.
• Abbreviation
AR
:
Argentina
model
EA
: Saudi
Arabia model
MX
: Mexican model
1.8 Vp-p
32.768 kHz
3.2 Vp-p
7.92 MHz
1 V/DIV
, 20
sec/DIV
2 V/DIV
, 50 nsec/DIV
1
IC401
qd
(X_OUT)
2
IC401
os
(OSC_OUT)
0.05 Vp-p
4 MHz
0.05 V/DIV
, 50 nsec/DIV
3
IC001
qh
(XT
AL1)
Ve
r.
1
.1
