THIS NOTE IS COMMON FOR PRINTED WIRING BOARDS AND SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
For Printed Wiring Boards:
Note:
• X : Parts extracted from the component side.
• Y : parts extracted from the conductor side.
•
: Through hole.
a
•
: Pattern from the side which enables seeing.
(The other layers' patterns are not indicated.)
Caution:
Pattern face side:
Parts on the pattern face side seen from
(SIDE B)
the pattern face are indicated.
Parts face side:
Parts on the parts face side seen from
(SIDE A)
the parts face are indicated.
• Indication of transistor.
C
Q
These are omitted.
B
E
C
These are omitted.
B
E
WX-GT77UI/GT78UI/GT78UIM
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
/
W or less unless otherwise
4
specifi ed.
•
: internal component.
f
• C : panel designation.
Note: The components identifi ed by mark 0 or dotted
line with mark 0 are critical for safety.
Replace only with part number specifi ed.
• A : B+ Line.
• B : B– Line.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
• no mark : FM
(
) : AM
<
> : CD PLAY
• Voltages are taken with VOM (Input impedance 10 MΩ).
Voltage variations may be noted due to normal production
tolerances.
• Waveforms are taken with a oscilloscope.
Voltage variations may be noted due to normal production
tolerances.
• Circled numbers refer to waveforms.
• Signal path.
: CD
J
: FM
F
: AM
f
: AUX
L
: USB
c
g : BUS AUDIO
• Waveforms
– MAIN Board –
IC001
(XTAL1)
0.04 Vp-p
4 MHz
0.05 V/DIV, 50 nsec/DIV
IC501
(X_OUT)
1.2 Vp-p
32.768 kHz
0.5 V/DIV, 20 μsec/DIV
IC501
(OSC_OUT)
1.5 Vp-p
7.92 MHz
0.5 V/DIV, 50 nsec/DIV
17
17
WX-GT77UI/GT78UI/GT78UIM