CDX-GT540UI, CDX-GT547UI - Sony Car Audio Service Manual (repair manual). Page 15

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CDX-GT540UI/GT547UI
CDX-GT540UI/GT547UI
15
15
For Schematic Diagrams.
Note:
•  All capacitors are in 
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 
specifi ed.
•      f  : internal component.
•  C : panel designation.
THIS  NOTE  IS  COMMON  FOR  PRINTED  WIRING  
BOARDS  AND  SCHEMATIC  DIAGRAMS.
(In addition to this, the necessary note is printed in 
each block.)
•  A  : B+ Line.
•  B  : B– Line.
•  Voltages and waveforms are dc with respect to ground 
under no-signal (detuned) conditions.
  no mark : FM
 ( 
MW
  < 
> : CD PLAY
        
*
   : Impossible to measure
•  Voltages are taken with a VOM (Input impedance 10 M
).
  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.
  J : 
CD
  F : 
FM
  f : 
MW
  L : 
AUX
  c : 
USB
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.)
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 identifi ed by mark 0 or dotted 
line with mark 0 are critical for safety. 
 
Replace only with part number specifi ed.
• Waveforms
– MAIN Board –
1.8 Vp-p
32.768 kHz
3.2 Vp-p
7.92 MHz
1 V/DIV, 20 ȝsec/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 (XTAL1)
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