Kenwood TM-V71A, Service Manual

Page: 12 / 103

TM-V71A/V71E
12
Pin No. Port Name I/O Function
76 PKD_SEL O
PKD input switching (PKD (PNL) or
PKD (EXT))
77 VU_TX O
L:VHF TX, H:UHF TX (V/U switching)
H: Mute
78 CM I
MIC key serial input terminal
(for MC-59)
79 MIC_DW I
MIC key (DOWN, MR, PF) input
(for MC-45)
80 MIC_UP I
MIC key (UP, CALL, VFO) input
(for MC-45)
81 SQ_B I Noise level A/D input for B band
82 SQ_A I Noise level A/D input for A band
83 SM_B I S-meter level A/D input for B Band
84 SM_A I S-meter level A/D input for A Band
85 TOIN_B I
B band (CTCSS, DCS, and WX)
decoder A/D input
86 TOIN_A I
A band (CTCSS, DCS, and WX)
decoder A/D input
87 SCB_C O
+B power switch for control unit
(power supply for AF power amplifi er)
88 S5M_C O Power switch for RS-232C driver
89 BATT - Not used
90 DTMFPD O
Power down mode control terminal
of the DTMF IC (Reset processing
when the turning the transceiver
power ON.)
91 DTMFDT I DTMF serial data input
92 DTMFCLK O DTMF clock
93 DTMFDET I DTMF data detection terminal
94 AVSS I GND
95 AF_CAL I Not used
96 VREF I Reference voltage
97 AVCC I Analog power supply
98 AF_MUTE2 O
AF mute 2 (Front of AF power amp-
lifi er) L: Mute
99 AF MUTE1 O
AF mute 1 (Front of AF power amp-
lifi er) L: Mute
100 AMP_MUTE O
AF power amplifi er mute switch
H: Mute
Shift Register: BU2099FV (TX-RX unit (A/6) IC576)
Pin
No.
Port
name
Pin name I/O Function
Active
level
6 Q0 WN_A O
Wide/Narrow switching
SW for A band H (Narrow)
/ L (Wide)
7 Q1 VU_SEL_A O VCO VHF/UHF select
H: VHF
L: UHF
8 Q2 8TVA_C O
8V power supply control
switch for A Band VHF TX
H
9 Q3 5RUA_C O
5V power supply switch
for A Band UHF BPF
H
10 Q4 VHF_AIP O AIP switch (A band/B band) H
11 Q5 FAN_C O FAN control switch H
12 Q6 SFT_A O VCO switching (A band)
H: Shift ON
L: Shift OFF
13 Q7 UHF_AIP O AIP switch (A band/B band) H
14 Q8 8TUA_C O
8V power supply control
switch for A band UHF TX
H
15 Q9 5RVA_C O
5V power supply switch
for A band VHF BPF
H
16 Q10 BP_SFT_A O BPF shift switch for A band H
17 Q11 5RAM_C O
5V power supply switch
(DET A switching SW) for
A band AM
H (DET A)
/ L (AM)
Shift Register: BU2099FV (TX-RX unit (A/6) IC577)
Pin
No.
Port
name
Pin name I/O Function
Active
level
6 Q0 WN_B O
Wide/Narrow switching
SW for B band H (Narrow)
/ L (Wide)
7 Q1 VU_SEL_B O VCO VHF/UHF select
H: VHF
L: UHF
8 Q2 8TUB_C O
8V power supply control
switch for B band UHF TX
H
9 Q3 5RUB_C O
5V power supply switch
for B band UHF BPF
H
10 Q4 PR9_SEL O PR9 output switching SW
H (DET_A)
/ L (DET_B)
11 Q5 PR (PNL)_SEL O
DET output switching SW
to internal TNC H (DET_A)
/ L (DET_B
12 Q6 SFT_B O VCO switching (B band)
H: Shift ON
L: Shift OFF
13 Q7 8TVB_C O
8V power supply control
switch for B band VHF TX
H
14 Q8 NC - Not used (5V) H
15 Q9 5RVB_C O
5V power supply switch
for B band VHF BPF
H
16 Q10 5R8B_C O
5V power supply switch
for B band 800MHz BPF
H
17 Q11 BP_SFT_B O BPF shift switch for B band H
SEMICONDUCTOR DATA