Display Unit; Tx-Rx Unit - Kenwood TS-590SG Service Manual

TS-590SG
Ref. No. Use / Function
D654 Switching
D655 Switching
D656 Switching
D657 Switching
D659 Switching
D660 Switching
D661 Switching
D662 Switching
D663 Switching
D664,665 Switching
D666 Switching
D667 Switching
D668 Switching
D669 Switching
D670 Switching
D671 Switching
D672 Switching
D673,675,677 Switching
D678 Switching
D679 Switching
D680,681 Switching
D682 Switching
D683 Switching
Variable capaci-
D801
tance diode
Variable capaci-
D802,803
tance diode
D901 Protection
D902 Protection
D903 Protection
Display unit (XC1-0220-00)
Ref. No. Use / Function
IC101 LCD driver
IC102 Buffer
IC103 MCU
IC104 Buffer
IC105,106 Buffer
Q101 Driver
Q102,106 Switching
Q103~105 Driver
Q106 Driver
Q107 Driver
Q109 Driver
D101~115 LED (Green)
Reverse current
D116~122
prevention
22
COMPONENTS DESCRIPTION
Operation / Condition / Compatibility
LO1 BPF2 selection switch
LO1 BPF4 selection switch
BPF2/ BPF3 selection signal control
LO1 BPF1/ BPF2 selection switch
IFB selection switch
LO1 BPF4 selection switch
LO1 BPF2 selection switch
LO1 BPF1/ BPF2 selection switch
LO1 BPF3 selection switch
LPF cutoff switching
LO1 BPF4 selection switch
IFA/ IFB selection switch
LO1 BPF1 selection switch
LO1 BPF3 selection switch
LO1 BPF1 selection switch
BPF2/ BPF3/ BPF4 selection switch
BPF1/ BPF2 selection switch
BPF cutoff control
LO1 BPF2 selection switch
LO1 BPF3 selection switch
LO1 BPF4 selection switch
LO1 BPF1 selection switch
LO1 BPF3 selection switch
FM modulation control
VCO control
Surge protection
Voltage protection
Reverse current protection
Operation / Condition / Compatibility
LCD backlight dimmer control
Panel microcomputer
LCD backlight dimmer control
Voltage conversion: 5V → 3.3V
LCD backlight dimmer control
5V power supply switch
LCD backlight dimmer control
LED (D214) control
LED (D961) control
LED (D215) control
LCD backlight
Key matrix
Ref. No. Use / Function
D123~160 LED (Green)
D161~213 LED (Amber)
D214 LED (Green)
D215 LED (Red)
D216 LED (Green)
D217 LED (Amber)
Reverse current
D218
prevention
D961 LED (Orange)
TX-RX unit (XC1-024X-XX)
Ref. No. Use / Function
IC11 Shift register
IC12 Shift register
IC13 D/A convertor
Operation / Condition / Compatibility
LCD backlight
LCD backlight
Lights during reception
Lights during transmission
LCD backlight
LCD backlight
Reduced voltage detection inter-
rupt
ON when Mulch encoder is active
Operation / Condition / Compatibility
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 Not Used
Q8: 50RGC "H" when receiving
21.5~30, 30~60MHz and PRE
"H" are selected
Q1: DRVO "L" 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: NBSW "H" when NB1
function is 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
Q8: ANTOUT "H" when RX
Antenna output is selected
Ao1: POC2
TX power control 2 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