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Level Detection Circuit
Path from J300 pin 2 EXT SPK SKT or TP311 GND REF POINT TP312
J300
Ext Speaker Socket
Pin 2 or TP311
U309
Level Detector
Input pin 1
Output pin 6
Q305
PNP Transistor
Input B
Output C
Q306
NPN Transistor
Input B
Output C
Power Supply Circuit
Path from P203 pin 1 +Battery from car or TP203
P203
6 PIN Connector
Pin 1 or TP203
D201
Diode
Input pin 1
Output Pin 2
Q204
PNP Transistor
Input E
Output C
Q309
NPN Transistor
Input C
Output E
U303 and
U302
5V Reg
Input pin 3
Output pin 1
External Power Supply
Path from P203 pin 1 +Battery from car or TP203
P203
6 PIN Connector
Pin 1 or TP203
D201
Diode
Input pin 1
Output pin 2
Q204
PNP Transistor
Input pin E
Output pin C
Q101
PNP Transistor
Input pin E
Output pin C
D104
Diode
Input pin 1
Output pin 2
P201
16 PIN Connector
Pin 15 or TP201
Power Amplifier Power Supply
Path from P203 pin 1 +Battery from car or TP203
P203
6 PIN Connector
Pin 1 or TP203
D201
Diode
Input pin 1
Output pin 2
Q205
NPN Transistor
Input pin C
Output pin E
U308
Output Amplifier
Input pin 5 or TP301
MCUK980101G8
Section 10
Issue 1
Technical Guide
10 - 3
Revision 0
ACCESSORIES