Kirisun PT6500 - Page 7

6
Type
Ht9172
PST9140NR
TC75W51FU
ADF4111
NJM2904
Ta31136
NJM2902
AK2346
M30620
AT24C256
TDA8541
RQA0002
DTC144EUA
2SK508NV
DTA144EE
DTA144EE
2SC4116
2SC4617
2SC5108
DTC144EE
2SK1829
3SK318
3SK318
2SC5108
2SC5108
2SC4617
DTC144EE
DTC144EE
DTC144EE
DTA144EE
DTA123JE
2SK1824
RD01MUS1
2SC4617
2SC4617
DTC144EE
2SK1824
2SK1824
DTC144EE
DTA144EE
2SK1824
2SA1586
ST2301
2SC5108
XC6024B502MR
2SC4116
DTC144EE
ST2301
DTA123JE
XC6024B502MR
2SA1586
ST2302
2SC5108
2SC3356
2SK1824
2SK508NV
DTA143TE
2SC5108
DTA143TE
Function Description
DTMF decoding chip
MCU reset circuit
MIC amplification, amplitude limit and filtering
Frequency combiner
APC, voltage comparison, driving
nd nd
Receiver 2 local oscillation, 2 IF amplification,
Amplitude limit, demodulation, noise amplification
Receiver demodulation signal amplification, filtering
Audio processing chip
MCU
2
E PROM, storage channel frequency data, function
setting parameters, debugging status parameters
Receiver's audio power amplifier
Remitter's upstage power amplifier
APC control switch
Receives VCO oscillation circuit
APC output switch
APC control switch
PLL low pass switch
VCO power filter
nd
Receiver's 2 local oscillation doubling circuit
APC control switch
Receiver's HF amplification gain control switch
Receiver's HF amplification
st
1 frequency mixer
VCO buffer amplifier
st
1 IF amplifier
Receiver's noise amplifier
Red LED drive
Wide and narrow band noise switch
Green LED drive
Wide and narrow band frequency discrimination switch
2T high pass filter control switch
2T high pass filter control switch
Transmitter power amplifier pushing
2T high pass filter circuit
2T high pass filter circuit
Beat frequency control switch
Receiver's mute switch
Receiver's audio output switch, off upon emergent alert.
Audio power amplifier control switch
MIC amplification unit power switch
Voice prompt switch
External PTT detection switch
5R switch
VCO buffer amplifier
5V regulated voltage output
MIC AGC control switch
External PTT detection switch
5T switch
5C switch
5V regulated voltage output
MIC AGC control switch
External horn control switch
Transmitter's 1st amplification
nd
Transmitter's 2 amplification
Receiver's audio output switch, on upon emergent alert.
Remitter's VCO oscillation circuit
Remitter's VCO control switch
VCO buffer amplifier
Receiver's VCO control switch
3.4Semiconductor Function Description
PT6500 SERVICE MANUAL
Position
IC10
IC11
IC14
IC2
IC3
IC4
IC5
IC6
IC7
IC8
IC9
Q1
Q10
Q11
Q12
Q12
Q13
Q14
Q15
Q16
Q17
Q18
Q19
Q2
Q20
Q21
Q22
Q23
Q24
Q25
Q26
Q29
Q3
Q30
Q31
Q32
Q33
Q34
Q35
Q36
Q37
Q38
Q39
Q4
Q40
Q41
Q42
Q43
Q44
Q45
Q47
Q48
Q49
Q5
Q51
Q6
Q7
Q8
Q9
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
O
O
O
-
O
O
O
O
O
O
O
O
O
O
I
O
O
O
O
-
O
-
O
O
-
I
I
I
I
I
I
I
I
O
O
O
O
O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
I/O
O
I
I
I
I
I
I
-
I
-
-
O
O
O
PLL-STB
PLL-DATA
PLL-CLK
C-VCC
MAX AF SW
GREEN
RED
5TC
5RC
5CC
W/N N
W/N W
AFCO
RX MUTE
W-BUSY
W-DATA
W-SCLK
W-MUTE
S-SCK
ACC
S-SI
VSS
S-SO
S-CS
-
PTT
H-D3
H-D2
H-D1
H-D0
H-DV
DN
UP
L-AO
L-AO
L-AO
L-AO
L-AO
K1
K1
K1
K1
K1
K1
K1
K1
LAMP
BATT
RSSI
BUSY
VOX
QT/DQT IN
PF
AVSS
MANDOWN
VREF
AVCC
VOX SW
MIC MUTE
HPF PC
Phase locked loop enabled pin
Phase locked loop data pin
Phase locked loop clock pin
Connects the power supply
Max volume control L: Max. volume
Green indicator H: Lights on
Red indicator H: Lights on
5T control switch L: 5V for 5T
5R control switch L: 5V for 5R
Power-saving control switch L: 5V for 5C
Band selection-Narrow band H: narrow band
Band selection-Wide band H: wide band
Audio power amplifier control
H: power amplifier operates
Receives mute control L: mute
Voice reporting chip busy, signal detection
H: reporting
Voice reporting data signals
Voice reporting clock signals
Voice reporting mute control L: mute
-
Connects 5V power supply
-
Grounding
-
-
-
PTT key input L: transmitting
DTMF data input
DTMF data input
DTMF data input
DTMF data input
DTMF data input
Encoding switch signals
Encoding switch signals
LCD control signals
LCD control signals
LCD control signals
LCD control signals
LCD control signals
Keypad signals
Keypad signals
Keypad signals
Keypad signals
Keypad signals
Keypad signals
Keypad signals
Keypad signals
Backlight control signals H: lights on
Battery voltage detection
Receives field strength indication detection
Noise level detection
Acoustic control level detection
CTCSS/DCS signal input
Customized keypad input
Grounding
MANDOWN signal input L: valid
Connects to the power supply
Connects to the power supply
VOX power control L: VOX set H: VOX not set
MIC mute switch L: Mute
High pass power control
L: Scrambling set H: Scrambling not set