MEX-BT3100P, MEX-BT3100U, MEX-BT3150U, MEX-BT3153U, MEX-BT31PW (serv.man2) - Sony Car Audio Service Manual (repair manual). Page 2

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MEX-BT31PW/BT3100P/BT3100U/BT3150U/BT3153U
2
1.  MAIN  AND  KEY  BOARDS  DISCRIMINATION
Confi rm by the part number of the MAIN and KEY boards.
2.  DIAGRAMS
THIS  NOTE  IS  COMMON  FOR  PRINTED  WIRING  BOARDS  AND  SCHEMATIC DIAGRAMS.
(In addition to this, the necessary note is printed in each block.)
– KEY Board (Component Side) –
– MAIN Board (Component Side) –
Former : 1-886-982-12 
 
  (BT31PW/BT3100P/BT3150U: E, Mexican, Argentina/BT3153U)
 
  1-887-147-11
 
   (BT3100U/BT3150U: Saudi Arabia model)
New 
: 1-886-982-21 or 1-886-982-22
 
  (BT31PW/BT3100P/BT3150U: E, Mexican, Argentina/BT3153U)
 
  1-887-147-21
 
  (BT3100U/BT3150U: Saudi Arabia model)
Former : 1-886-920-11
New 
: 1-886-920-21 or 1-886-920-22
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.
•  A : B+ Line.
•  Power voltages is dc 14.4V and fed with regulated dc 
power supply from ACC and BATT cords.
•  Voltages are dc with respect to ground under no-signal 
(detuned) conditions.
  no mark : TUNER (FM)
  <       > : CD PLAY
       
*
  : Impossible to measure
•  Voltages are taken with VOM (Input impedance 10 M
).
  Voltage variations may be noted due to normal production 
tolerances.
• Signal path.
  F : 
AUDIO
  f : 
TUNER
  J : 
CD
  d : 
USB
  h : 
SIRIUS/XM
  E : 
AUX
  a : 
Bluetooth
• Abbreviation
 AR  : 
Argentina 
model
  EA 
: Saudi Arabia model
  MX 
: Mexican model
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.)
•  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.
• Abbreviation
 AR  : 
Argentina 
model
  EA 
: Saudi Arabia model
  MX 
: Mexican model
Note: When the complete MAIN board is replaced, the desti-
nation setting is necessary. Refer to “NOTE THE MAIN 
BOARD OR SYSTEM CONTROLLER (IC501) RE-
PLACING” on page 4 on original service manual.
Note: When the complete MAIN board is replaced, the desti-
nation setting is necessary. Refer to “NOTE THE MAIN 
BOARD OR SYSTEM CONTROLLER (IC501) RE-
PLACING” on page 4 on original service manual.
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