Components Description - Kenwood KTC-V300E Service Manual

ELECTRIC UNIT (X34-407x-xx, X34-4592-10)
Ref.No. FUNCTION
IC101 MICROPROCESSOR
IC102 RESET IC
IC103 EEPROM
IC104 AND GATE
IC201 DIVERSITY CONTROL
IC301 TV VIF/SIF
IC401 PAL/NTSC/SECAM TV processor
IC402 VIDEO SWITCH & AMP
IC403 VIDEO AMP
IC501 NOISE CANCELLER
IC502 DUAL OPERATIONAL AMP
IC602 8V REG
IC603 5V REG
IC604 5V REG
IC606 8V REG
IC607 9V REG
Q101 RESET SWITCH
Q201 IF AMPLIFIER
Q301 BUFFER
Q302 BUFFER
Q303 VIDEO AMPLIFIER
Q304 INVERTER
Q305 VIDEO BUFFER
Q309~311 CLOCK SWITCH
Q401~403 RGB BUFFER
Q409,410 BUFFER
Q413 BUFFER
Q501 AUDIO MUTE
Q502 AUDIO MUTE
Q601 POWER SWITCH
Q602 Q601 DRIVER
Q603 B.U DETECTION
Q604 5V AVR
Q605 5V AVR

COMPONENTS DESCRIPTION

Controls functions
Reset control
Data storage
Buffers BPCLK
Switches TV antenna
Detects VIF&SIF
RGB decorder
75Ω Driver with 6dB amp and switch for composite signal
75Ω Driver with 6dB amp for RGB signal
Cancels audio noise
Bandpass filter and amplifier
Supplies power to audio and IF circuit
Supplies power to Front-end
Supplies power to IC201 and VIDEO circuit
Supplies power to RGB decorder
Supplies power to Antenna AMP
Reset control
Amplifies IF
Buffers video signal
Buffers video signal
Amplifies H-sync signal
Inverters H-sync pluse
Buffers video signal
Switches clock
Buffers RGB signals
Creates H-sync pulse
Buffers video signal
Audio MUTE control
Mutes audio signal
Switches back-up power supply
"P-ON" control
Detects back-up
Supplies power to IC101 and IC104
Supplies power to IC101 and IC104
KTC-V300E/V300N/V300P
Processing Operation
3