XM-GTX1821 - Sony Car Audio Service Manual (repair manual). Page 7

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XM-GTX1821
7
SECTION  4
DIAGRAMS
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.
• 
2 : Nonfl ammable resistor.
• 
C : Panel designation.
• 
A : B+ Line.
• 
B : B– Line.
•  Power voltage is dc 14.4 V and fed with regulated dc 
power supply from +12 V and REM terminals.
•  Voltages and waveforms are dc with respect to ground 
under no-signal conditions.
•  Voltages are taken with 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.
 
F : 
AUDIO
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.
• 
 : Pattern from the side which enables seeing.
  (The other layers’ patterns are not indicated.)
•  Indication of transistor.
 
C
B
These are omitted. 
E
Q
 
C E
B
These are omitted. 
 
B
These are omitted.
C E
Q
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