Sony CDX-GT930UI Service Manual page 21
Fm/am andfm/mw/lw compact disc player
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Also See for CDX-GT930UI:
- Operating instructions manual (160 pages) ,
- Installation/connections (2 pages) ,
- Limited warranty (1 page)
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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.
•
: 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
B
C E
These are omitted.
E
C B
These are omitted.
• Abbreviation
IT
: Italian model
MX
: Mexican model
RU
: Russian model
CDX-GT930UI/GT937UI/GT980UI
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
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.
• Voltages and waveforms are dc with respect to ground
under no-signal (detuned) conditions.
no mark : FM
(
) : AM/MW/LW
<
> : CD PLAY
: Impossible to measure
*
• 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 PLAY
J
F
: FM
f
: AM/MW/LW
: BUS
L
g : AUX
c
: USB
• Abbreviation
IT
: Italian model
MX
: Mexican model
RU
: Russian model
• Waveforms
– MAIN Board –
IC551
(XTO)
2 Vp-p
8.664 MHz
0.5 V/DIV, 50 ns/DIV
IC1
(XTAL1)
50 mVp-p
4 MHz
20 mV/DIV, 100 ns/DIV
IC303
(XCOUT)
1.9 Vp-p
32.768 kHz
1 V/DIV, 10 μs/DIV
IC303
(XOUT)
3.5 Vp-p
6 MHz
1 V/DIV, 50 ns/DIV
21
21
CDX-GT930UI/GT937UI/GT980UI
– DISPLAY Board –
IC901
(XOUT)
3 Vp-p
8 MHz
1 V/DIV, 50 ns/DIV
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