MEX-N4100BE, MEX-N4100BT, MEX-N4150BT (serv.man2) - Sony Car Audio Service Manual (repair manual). Page 2

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)
  [         ] : TUNER (AM)
  (         ) : 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 PLAY

 

d : 

USB

 

E : 

AUX

 

a : 

Bluetooth

 

N : 

MIC

• Abbreviations
 AR  : 

Argentina 

model

  RU 

: Russian model

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.

 

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: When the complete MAIN board is replaced, it is nec-

essary to replace knob (VOL) (SV) assy simultane-
ously. 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 
7 and “BLUETOOTH INFORMATION WRITING 
METHOD” on page 8 on original service manual.

Note: When the complete MAIN board is replaced, it is nec-

essary to replace knob (VOL) (SV) assy simultane-
ously. 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 
7 and “BLUETOOTH INFORMATION WRITING 
METHOD” on page 8 on original service manual.

VOUT 1

VIN

6

VSS 2

ON/OFF 3

+
–

REFERENCE

VOLTAGE

ON/OFF

CONTROL

VSS

5

SSC

4

INRUSH CURRENT

LIMITING

THERMAL

SHUTDOWN

OVERCURRENT

PROTECTION

• Abbreviations
 AR  : 

Argentina 

model

  RU 

: Russian model