MEX-XB100BT - Sony Car Audio Service Manual (repair manual). Page 36

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MEX-XB100BT
MEX-XB100BT
36
36
• Waveforms
– MAIN Board –
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.
•      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.
•  Power voltages is dc 14.4V and fed with regulated dc 
power supply from ACC and BATT cords.
•  Voltages and waveforms are dc with respect to ground 
under no-signal (detuned) conditions.
  no mark : TUNER
  (         ) : CD PLAY
       
*
  : Impossible to measure
•  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
  f : 
TUNER
  h : 
SIRIUSXM
  J 
: CD PLAY
  d : 
USB
  E : 
AUX
  a : 
Bluetooth
  N : 
MIC
For Printed Wiring Boards.
Note:
•  X : Parts extracted from the component side.
•  Y : Parts extracted from the conductor side.
•      f  : Internal component.
• 
 : Pattern from the side which enables seeing.
  (The other layers’ patterns are not indicated.)
Note: 
The components identi-
fi
 ed by mark 0 or dotted 
line with mark 0 are criti-
cal for safety. 
Replace only with part 
number specifi ed.
Note: 
Les composants identifi és 
par une marque 0 sont 
critiques pour la sécurité. 
Ne les remplacer que par 
une pièce portant le nu-
méro spécifi é.
•  Indication of transistor.
 
C
B
These are omitted. 
E
Q
Caution:
Pattern face side:
(Conductor Side)
Parts face side: 
(Component Side)
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 1: When the complete MAIN board is replaced, it is 
necessary to replace knob (VOL) (SV) assy simul-
taneously. Also, the destination setting, Bluetooth 
operation check and Bluetooth information writing 
is necessary. Refer to “DESTINATION SETTING 
METHOD” on page 4, “BLUETOOTH FUNCTION 
CHECKING METHOD USING A CELLULAR 
PHONE” on page 8 and “BLUETOOTH INFORMA-
TION WRITING METHOD” on page 9.
Note 2: When the complete AMP board is replaced, re-
fer to “NOTE OF REPLACING THE IC1600 ON 
THE AMP BOARD AND THE COMPLETE AMP 
BOARD” on page 6.
Note 1: When the complete MAIN board is replaced, it is 
necessary to replace knob (VOL) (SV) assy simul-
taneously. Also, the destination setting, Bluetooth 
operation check and Bluetooth information writing 
is necessary. Refer to “DESTINATION SETTING 
METHOD” on page 4, “BLUETOOTH FUNCTION 
CHECKING METHOD USING A CELLULAR 
PHONE” on page 8 and “BLUETOOTH INFORMA-
TION WRITING METHOD” on page 9.
Note 2: When the complete AMP board is replaced, re-
fer to “NOTE OF REPLACING THE IC1600 ON 
THE AMP BOARD AND THE COMPLETE AMP 
BOARD” on page 6.
22.7 
Ps
3.5 Vp-p
1
IC705 
rk (PIO18)
1 V/DIV, 10 
Ps/DIV
4
IC503 
yk (RTC_X2)
500 mV/DIV, 10 
Ps/DIV
30.4 
Ps
1.8 Vp-p
5
IC503 
ua (XTAL)
1 V/DIV, 20 ns/DIV
74.8 ns
3.5 Vp-p
6
IC503 
<zv/ (USB_X2)
500 mV/DIV, 10 ns/DIV
21.2 ns
1 Vp-p
3
IC705 
yj (XO)
1 V/DIV, 20 ns/DIV
59.2 ns
3.5 Vp-p
2
IC705 
rl (PIO19)
1 V/DIV, 200 ns/DIV
354 ns
3.5 Vp-p
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.
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