Kenwood DDX7019 Service Manual page 7

● ELECTRIC UNIT (X34-477x-xx)
Ref. No. Application / Function
IC71 3 terminal regulator
IC101 Pin 100 µ-com
IC102 Voltage detector
IC104 Logic IC (inverter)
IC105 Serial/Parallel IC
IC106 Logic IC
IC201 Electronic volume IC
IC202 Logic IC (multi plexer)
IC203 Logic IC (multi plexer)
IC251 RDS decoder IC
IC301 Power IC
Q1 Transistor
Q2 Transistor
Q3 Transistor
Q4,6 Transistor
Q7~10 Transistor
Q11,12 Transistor
Q13 Transistor
Q51 Transistor
Q52 Transistor
Q53,54 Transistor
Q70~72 Transistor
Q81~86 Transistor
Q91~96 Transistor
Q101 Transistor
Q102,103 Transistor
Q104,105 Transistor
Q106 Transistor
Q107 Transistor
Q108 Transistor
Q251,252 Transistor
Q351 Transistor
Q352 Transistor
Q353 Transistor
Q354 Transistor
Q355 Transistor
Q356 Transistor
Q357 Transistor
Q358 Transistor
Q359 Transistor
Q360 Transistor
Q361 Transistor
COMPONENTS DESCRIPTION
Audio8V and Tuner8V generation
Primarily, audio board control
µ-com reset voltage (4.2V) monitoring
Reverse reset from X14
Control output of AudioSW IC
Conversion of communication line level between X14 system µ-com (3.3→5)
Audio volume control and audio signal selection
Audio signal selection (Sub)
Audio signal selection (Main)
RDS signal processing and demodulation
Power amplifi er for speaker output
Reverse detection circuit
Parking detection circuit
ILLMI detection circuit
Bu detection circuit
P_CON output circuit
ANT_CON output circuit
EXT_CON output circuit
Generating Bu5V
Bu5V circuit
SW5V circuit
Audio8V and Tuner8V generation
Relay SW1 output, and over current detection circuit
Relay SW2 output, and over current detection circuit
µ-com reset circuit
TV reset circuit
DET MUTE circuit (Trigger Reset)
DET MUTE circuit (Trigger Bu-DET)
DET MUTE circuit (Trigger X14Bu-DET)
DET MUTE circuit (Trigger Bu-DET)
On when AM (Tuner8V)
Pre-OutMute Mute transistor (FL)
Pre-OutMute circuit (Front, Rear)
Pre-OutMute Mute transistor (FR)
Pre-OutMute Mute transistor (RL)
Pre-OutMute Mute transistor (RR)
Pre-OutMute Mute transistor (SUB L)
Pre-OutMute circuit (SUB)
Pre-OutMute Mute transistor (SUB R)
Pre-OutMute Mute transistor (AV-OUT L)
Pre-OutMute circuit (AV-OUT)
Pre-OutMute Mute transistor (AV-OUT R)
DDX7019/7029/7029Y/7039
DNX7100/7200
Operation / Condition / Compatibility
7