Kenwood TM-V71A Service Manual page 16

TM-V71A/V71E
Ref. No. Use / Function
Q486 Switching
Q487 Switching
Q488 Switching
Q489 Amplifi er
Q490 Switching
Q491 Amplifi er
Q492 Switching
Q493 Amplifi er
Q494 Amplifi er
Q495 Amplifi er
Q496 Switching
Q546 Switching
Q547 Tripler
Q548 Switching
Q549 Switching
Q550 Switching
Q551 Amplifi er
Q572 Switching
Q573 Switching
Q574 Switching
Q575 Switching
Q576 Switching
Q578 Switching
Q579 Switching
Q580 Switching
Q582 Switching
Q583 Switching
Q584 Switching
Q585 Switching
Q586 Switching
Q587 Switching
16
COMPONENTS DESCRIPTION
Operation / Condition / Compatibility
Ceramic fi lter select (On when FM-
Narrow is selected on A band)
Ceramic fi lter select (On when FM-
Wide is selected on A band)
Squelch select (On when FM-
Narrow is selected on A band)
AM IF AGC amplifi er
AGC switch
AM IF AGC amplifi er
AGC switch
A band discriminator dump switch (On
when FM-Wide is selected on A band)
AM IF AGC amplifi er
A band 1st IF amplifi er
AGC voltage select (AM/FM) (On
when FM is selected on A band)
Ceramic fi lter select (On when FM-
Narrow is selected on B band)
16.8MHz×3
Ceramic fi lter select (On when FM-
Wide is selected on B band)
Squelch select (On when FM-
Narrow is selected on B band)
B band discriminator dump switch (On
when FM-Wide is selected on B band)
B band 1st IF amplifi er
Make BP_SFT_B signal
Make BP_SFT_B_I signal
Make BP_SFT_A signal
Make BP_SFT_A_I signal
Fan control (On when Fan turn)
5RVA switch
(On when A band VHF is selected)
5RUA switch
(On when A band UHF is selected)
5RAM switch
(On when A band AM is selected)
5RVB switch
(On when B band VHF is selected)
5RUB switch
(On when B band UHF is selected)
5R8B switch (On when B band 1.2G
is selected)
8TV switch (On when VHF TX)
8TU switch (On when UHF TX)
8TVA switch (On when A band VHF TX)
Ref. No. Use / Function Operation / Condition / Compatibility
Q588 Switching 8TUA switch (On when A band UHF TX)
Q589 Switching 8TVB switch (On when B band VHF TX)
Q590 Switching 8TUB switch (On when B band UHF TX)
SB switch
Q591,592 Switching
(On during transceiver power ON)
Q606 Amplifi er PR1 amplifi er in DATA terminal (J607)
Q607 Amplifi er PR9 amplifi er in DATA terminal (J607)
Q641 Switching FAN control switch
Q642 Switching IGN control switch
Q644 Amplifi er VHF TX Pre-drive
Q701,702 Switching Shift VCO frequency range
Q703,704 Switching VCO select (VHF/UHF)
Q705 Oscilator VHF VCO
Q706 Oscilator UHF VCO
Q707 Amplifi er RF amplifi er
Q751,752 Switching Shift VCO frequency range
Q753,754 Switching VCO select (VHF/UHF)
Q755 Oscilator VHF VCO
Q756 Oscilator UHF VCO
Q757 Amplifi er RF amplifi er
Q801 Amplifi er AGC control
Q802 Switching Audio amplifi er (IC801) mute switch
Q803,804 Switching Audio line mute switch
Q805 Active fi lter for splatter fi lter
Q806 Active fi lter A band de-emphasis fi lter amplifi er
Q807 Active fi lter B band de-emphasis fi lter amplifi er
Q808 Active fi lter for splatter fi lter
Q809 Switching MIC mute
Q810 Active fi lter A band de-emphasis fi lter amplifi er
Q811 Active fi lter B band de-emphasis fi lter amplifi er
Q812 Switching PKD 9600bps mute switch
Q816 Switching Audio line mute switch
TCXO modulation level change
Q817 Switching
(On when UHF TX)
Q916,917 Switching Crystal oscillator frequency shift switch
Q918 Switching Over voltage protection switch
Q951 Switching SCB switch
Q952 Switching S5M switch
Q953 Switching SCB switch
Q954 Switching S5M switch
Q955 Switching PR1 amplifi er for Panel