Components Description - Kenwood TM-V708A Service Manual

TX-RX UNIT (X57-5860-12)
Ref No. Application/Function
IC1 PLL IC
IC2 VCO
IC3 Power Module
IC4 Power Module
IC100 IF LC
IC101 AF select
IC200 APC voltage comparison
IC300 Modulation signal amplification VHF
IC301 PLL IC
IC302 VCO
IC303 Prescaler
IC304 Speed up switch
IC400 IF IC
IC501 AF PA
IC601 Reset
IC602 EEPROM
IC603 AVR
IC604 Control microcomputer
IC700 DTMF decoder
IC701 CTCSS, DCS filter
IC702 Cross point switch
IC703 Buffer
IC800 Comparator
IC801 MIC amp
IC802 AF amp
IC803 AF select switch
IC804 Electronic control
IC805 Buffer amp
IC806 Audio amp
IC807 AF switch
IC808 Change switch
IC900 Expansion port
IC901 Expansion port
IC903 8V AVR
IC904 AVR
Q1 Charge pump
Q2 Charge pump
Q3 PLL comparison input amplifier VHF
Q4 Ripple filter
Q6 VCO output amplifier
Q7 LO doubling circuit
Q8 Drive amplifier
Q9 Drive amplifier
Q10 Switch
Q11 Switch
Q102 Doubling circuit
Q103 Power switch
Q104 Power switch
Q105 IF amp
Q106 IF amp
Q107 IF amp
Q108 AF amp
Q110 AF amp

COMPONENTS DESCRIPTION

Operation/Condition/
Compatibility
VHF PLL
VHF
VHF
UHF
A band
VHF
VHF
UHF PLL
UHF
UHF
B band
Setting, memory
APC, BPF
SP1/SP2
8C
VHF
VHF
VHF
VHF
VHF
VHF
VHF
VHF2nd LO doubling circuit
R5V
R5AM
VHF
VHF
VHF
VHF
VHF
Ref No. Application/Function
Q111 AGC amp
Q112 IF amp
Q113 AGC
Q200 1st Mixer
Q201 1st Mixer
Q202 RF amp
Q203 RF amp
Q204 Change switch
Q205 RF amp
Q207 AGC control
Q208 APC control
Q209 APC control
Q210 RF amp
Q300 Charge pump
Q301 Charge pump
Q302 PLL comparison input amplifier UHF
Q303 Ripple filter
Q304 VCO output amplifier
Q305 Doubling circuit
Q306 Power switch
Q307 Drive amplifier
Q308 LO amp
Q309 Drive amplifier
Q310 Drive amplifier
Q402 AF amp
Q404 Power switch
Q405 AF amp
Q406 IF amp
Q500 IF amp
Q501 1st Mixer
Q502 1st Mixer
Q503 Mixer
Q505 RF amp
Q506 RF amp
Q507 RF amp
Q508 RF amp
Q509 RF amp
Q601 Reset switch
Q603 Power switch
Q604 System down detection
Q700 AF amp
Q701 AF amp
Q702 Reset switch
Q800 Microphone mute
Q801 Pre-emphasis
Q802 Pre-emphasis
Q803 Microphone mute
Q804 Mute
Q805 Mute
Q807 Mute
Q900 Fan switch
Q903 Power switch
Q904 Power switch
TM-V708A
Operation/Condition/
Compatibility
VHF
VHF
VHF
VHF
VHF
VHF
VHF
VHF
VHF
VHF/UHF
VHF/UHF
VHF
UHF
UHF
UHF
UHF
UHF LO
UHF Prescaler
UHF
UHF
UHF
UHF
UHF
R5U
UHF
UHF
UHF
UHF
UHF
UHF
UHF
SM5C
PR9
PR1
T8V
T8U
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