Kenwood TS-590S, Service Manual

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TS-590S
22
Ref. No. Use / Function Operation / Condition / Compatibility
D654 Switching LO1 BPF2 selection switch
D655 Switching LO1 BPF4 selection switch
D656 Switching BPF2/ BPF3 selection signal control
D657 Switching LO1 BPF1/ BPF2 selection switch
D659 Switching IFB selection switch
D660 Switching LO1 BPF4 selection switch
D661 Switching LO1 BPF2 selection switch
D662 Switching LO1 BPF1/ BPF2 selection switch
D663 Switching LO1 BPF3 selection switch
D664,665 Switching LPF cutoff switching
D666 Switching LO1 BPF4 selection switch
D667 Switching IFA/ IFB selection switch
D668 Switching LO1 BPF1 selection switch
D669 Switching LO1 BPF3 selection switch
D670 Switching LO1 BPF1 selection switch
D671 Switching
BPF2/ BPF3/ BPF4 selection
switch
D672 Switching BPF1/ BPF2 selection switch
D673,675,677 Switching BPF cutoff control
D678 Switching LO1 BPF2 selection switch
D679 Switching LO1 BPF3 selection switch
D680,681 Switching LO1 BPF4 selection switch
D682 Switching LO1 BPF1 selection switch
D683 Switching LO1 BPF3 selection switch
D801
Variable capaci-
tance diode
FM modulation control
D802,803
Variable capaci-
tance diode
VCO control
D901 Protection Surge protection
D902 Protection Voltage protection
D903 Protection Reverse current protection
Display unit (X54-3700-00)
Ref. No. Use / Function Operation / Condition / Compatibility
IC101 LCD driver
IC102 Buffer LCD backlight dimmer control
IC103 MCU Panel microcomputer
IC104 Buffer LCD backlight dimmer control
IC105,106 Buffer Voltage conversion: 5V → 3.3V
Q101 Driver LCD backlight dimmer control
Q102 Switching 5V power supply switch
Q103~105 Driver LCD backlight dimmer control
Q106 Driver LED (D214, D215) control
Q107 Driver LED (D961) control
D101~115 LED (Green) LCD backlight
D116~122
Reverse current
prevention
Key matrix
Ref. No. Use / Function Operation / Condition / Compatibility
D123~160 LED (Green) LCD backlight
D161~213 LED (Amber) LCD backlight
D214 LED (Green) Lights during reception
D215 LED (Red) Lights during transmission
D216 LED (Green) LCD backlight
D217 LED (Amber) LCD backlight
D218
Reverse current
prevention Reduced voltage detection inter-
rupt
D961 LED (Orange) ON when Mulch encoder is active
TX-RX unit (X57-785X-XX)
Ref. No. Use / Function Operation / Condition / Compatibility
IC11 Shift register
Q1: FIL[1] “H” when 15kHz IF
fi lter is selected
Q2: FIL[2] “H” when 6kHz IF
fi lter is selected
Q3: FIL[3] “H” when 2.7kHz IF
fi lter is selected
Q4: FIL[4] “H” when 500Hz IF
fi lter is selected
Q5: RXFM “H” when RX FM
mode is selected
Q6: TXFM “H” when TX FM
mode is selected
Q7: HFRGC “H” when receiving
21.5~30MHz and PRE “H” are
selected
Q8: 50RGC “H” when receiv-
ing 30~60MHz and PRE ”H” are
selected
IC12 Shift register
Q1: DRVO “H” when drive
output is selected
Q2: 1STIF “H” when RX 1st IF
of 73.095MHz is selected
Q3: 455FIL “L” when 455kHz
FM narrow fi lter is selected
Q4: ALCS “H” when TX SSB/
AM mode are selected
Q5: AMC “H” when AM TX is
selected
Q6: RLSW “H” when linear
amplifi er usage is selected in HF
or 50MHz band
Q7: LINEAR “H” when linear
amplifi er usage is selected in
either band
IC13 D/A convertor
Ao1: AGC_REF
AGC reference voltage
Ao2: IFGC
RX IF gain control voltage
Ao3: ALC_REF
ALC reference voltage
Ao4: TGC
TX band gain control voltage
Ao5: POC
TX power control voltage
Ao6: PGC
TX power gain control voltage
COMPONENTS DESCRIPTION