QUANZHOU WOUXUN KG-689 User manual

Service Manual
Model: KG-689
Frequency: 136-174MHz
Version: KG-689-0801-V1
QUANZHOU WOUXUN ELECTRONICS CO., LTD
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QUANZHOU
WOUXUN ELECTRONICS CO., LTD Model: KG-689
V
ersion: KG-689-0801-V1 Page 1 of 33
KG-689 transceiver service manual
Contents
Introduction……………………………………………………………………………………2
Personal safety……………………………………………………………………. ………….2
Disassembly for repair......…………………………………………………….........................3
Circuit description……………………………………………………………………………..5
Parts list………………………………………………………………………………………..14
LCD part list..............................................................................................................................20
Exploded view...……………………………………………………………………………....21
Packing……………………………………………………………………………...................21
Adjustment……………………………………………………………………………………..22
Schematic…………………………………………………………………………....................25
LCD Schematic...........................................................................................................................26
LCD Board..................................................................................................................................27
Layout Board………………………………………………………………………...................28
PCB Board……………………………………………………………………………………...30
Block digaram……………………………………………………………….………………….32
Specification…………………………………………………………………………………….33
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-689
Version: KG-689-0801-V1 Page 2 of 33
Introduction
Scope of this manual
This manual is intended for use by experienced technicians familiar with similar types of commercial
grade communications equipment. It contains all required service information the equipment and is
current as of the publication date. This manual almost correct and complete, if there is something
oversight, WOUXUN company keeps the right of explanation. And we also keep the right of change
the design and the specification.
Personal Safety:
▣ Do not transmit, if you don’t check all transmitting pins or one of the opening pins hasn’t connect
to the correspond port.
▣ Switch off power when you are on flammability gas condition.
▣Do not take it apart, or have it repaired by a nonprofessional.
▣Turn off the radio before of detonator and blasting area.
▣In order to avoid the problem arising by Electromagnetic interference and/or Electromagnetic
Compatibility, please turn off the radio where there has a mark: Turn off radio, such as hospital or
other health care place and enplane.
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QUANZHOU
WOUXUN ELECTRONICS CO., LTD Model: KG-689
V
ersion: KG-689-0801-V1 Page 3 of 33
Disassembly for repair
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QUANZHOU
WOUXUN ELECTRONICS CO., LTD Model: KG-689
V
ersion: KG-689-0801-V1 Page 4 of 33
Disassembly for repair
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-689
Circuit Description
1. Frequency association
Frequency association is shown in Chart 1.
Chart 1
AF AMP
MIX.IF.DET
38.850MHz
1ST MX
RF AMPANT SW
PA AMP TX AMP (2) (1) PLLVCO MICAMP MIC
SP
MCF
450KHz
CF
2nd LO
LPF
ANT
T:136-174MHz
R:136-174MHz
2. Receive system
(1). RF amplifier is shown in Chart 2.
LPF
ANTSW
BPF
Chart 2
PFAMP
SP
BPF XF1
MIXER
MCF
IFAMP
MIX.I F.DET
AF AMP
VCO
PLL
ANT
The radio wave enter by antenna, through a low-pass and a transmit/receive switch circuit(D215,D216),
then input to RF amplifier, blow up by T220, the disturb signal will be unchained by band-pass filter.
(2). The first mixer
The receive signal and the first PLL unit output root flap signal will mix on the first mixer T233, then give
birth to the first intermediate frequency(IF) signal, except that all disturb signals will be unchained by crystal
filter..
Version: KG-689-0801-V1 Page 5 of 33
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-689
Version: KG-689-0801-V1 Page 6 of 33
APO
BEEP/CTCSS
ARX
AN SQL
RXI
14
9
U261
T463
U460
T451
SB
T453
AFC
SP MUTE
15
20
72
71
T455
SP
Chart 3
U8 11
MCU
Circuit Description
(3). Intermediate amplifier
As Chart 3 show, the first intermediate frequency blow up by T253, then enter U261(FM signal frequency
modulation integrate circuit). At time signal will mix with second root flap, switch to second IF signal.
Through 450K filter, except that all disturb signals will be unchained, then be blew up and inspected.
Audio frequency amplifier
The audio frequency signal comes from inspected filter and be aggravated, then input to MCU(U811), then
through adjust potentiometer, blow up by U460, get the audio frequency power, contact with MIC via T463.
Squelch circuit and signal intensity list
Check by U261: Output yawp signal, then put it into CPU (U811) and deal with it by the 25 feet interior.
According to the electricity level signal which MCU get, one side, it can control SP MUTE, APX and AFC, to
completed to control audio frequency output circuit (The level of CPU inside control system is from 1 to 9
grade, it can program by software or by keyboard). On the other side, it can control the signal strong list of
LCD screen.
3. Transmit system
(1). Speaker amplifier
As show in Chart 4, audio frequency signal comes from MIC will be aggravated, then limited blow up by
U411-A, all distortion audio frequency signals will be unchained by adjacent filter which makes up with
U411-B caused by limited blow up.
Modulate circuit
The signal comes from speaker amplifier modulated by adjust potentiometer VR382, then modulating
changeable reactance by varactors tube D348.
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-689
Version: KG-689-0801-V1 Page 7 of 33
3
2
5
4
1
PTT/RX232
MIC
5C
T430 T43 3
T41 4
MO DE
5T
5T
5T
T471
W/N
U411A U411B
MIC
T443
T43 8
D442
5V
SAVE
VOX
Chart 4
Circuit Description
(2). VOX circuit
Blow up audio frequency signal comes from the speaker’s by T443, change the AC audio frequency to DC
electricity level signal by D442, then put it into the CPU (U811) the 21 feet to manage.
Blow up drive and end level
The goal signal produce by VCO and cushion blow up by T113, then send it to a two grade FEI amplifier
after invigorative blow up T117, and blow up the power about 4W.
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-689
Version: KG-689-0801-V1 Page 8 of 33
BATT
P-TX
T171
T181
5T
T181 T18 1 T18 1
RX
ANT
TXin
APC
D146
D215 D216
Chart 5
Circuit Description
4. Select transmit and receive circuit
As shown in Chart 5. Output transmit signal will pass transmit and/or receive switch circuit and low-pass,
then send to antenna. Transmit and/or receive circuit has made up of D146 D145 D216. Start during
transmitting and stop during receiving, switch transmitting system and receiving system.
Auto power control circuit APC, use for get a reliable transmit power and transmit control output. This circuit
check out power discreteness end terminal current exhaust and control transmit output. Two reference
voltage from U170, one is give birth to the voltage which use for adjust the power output(AD1 give birth to ),
the other one is get the R171-R173 two terminal and end terminal exhaust current be direct ratio check out
voltage. On the output terminal of U181 can get a reference voltage and check out voltage dispersion be
direct ratio voltage signal. This signal by reverse then as APC voltage. This voltage be use control power
discreteness’ power control feet and make transmit output level off.
As show in Chart 5
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-689
Version: KG-689-0801-V1 Page 9 of 33
5C
T337
T35 5
T35 0
T37 5T37 0
D3 52
D3 53
D3 46
D3 45
D3 48
MO D
TX/ RX
PLL DAT A
10
11
12
13
3
5
20
5C
66
65
64
63
CP U
U811
5C
CR311
19.2MHz
PLL
U311
图6
Circuit Description
5. PLL Circuit
(1) PLL
19.25MHz reference oscillator output through PLL IC(U311) reference frequency then bring 5KHz and 6.5
KHz reference frequency.
VCO output signal blew up by T337, then bring compare frequency by U311 dispart frequency. Use different
dispart frequency ratio by CR311, and get different inspect posture consult frequency. According referenced
frequency and comparable frequency value, then bring 5, 6.25, 10, 12.5 and 25KHz for step frequency
value of PLL synthesizer. According referenced frequency and comparable frequency discrepancy value,
the output correspond pulse voltage from the fifth feet of U311, change it to direct current signal direct
current signal by filter after through Charge Pump, then bring lock voltage.
(2) VCO
Goal frequency is make up of FETT355 and T350 directly produced by Rapids oscillator. Lock controllable
voltage and then modify oscillator frequency by D353, D352, D346 and D345.
(3) Lose lock detection circuit
When PLL is on lose lock, one pulse will be plastic by R312 D312 C312 and R313, then add to LD side of
PLL (tenth LD side), and the voltage of LD side will be rose, CPU will control transmitting and receiving by
detecting the voltage of LD side.
(4) Digital control circuit
Conformation of Keyboard circuit: Directly input the signal come From the keyboard to CPU (U811).
Chart 6
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-689
Version: KG-689-0801-V1 Page 10 of 33
DATA
CS
R/W
U711
HT1621
LCD
D442 D442
5V
CLK
DATA
U853
EEPROM
5V
PTT
MO NI
46
61
47
48
49
50
55 56 57 58 59
T823
5V
37
5M
54 60
SB
51 52 53
23
38
图 7
Circuit Description
6. Reset and reserve circuit
When connect with power, one reset circuit made up of T823 R823 R825 C825 output a positive impulse,
this impulse signal add to the 37th feet reset side of U81. When turn off the power, the 37th feet side of
U811 turn low, and CPU send all data to U835 to store, then go into reserve.
Detect battery voltage circuit
Input SB to the 23th side A/D switch port of CUP(U811) after be disparted, and after disposal by CUP, drive
LCD battery level indicator.
Floodlight and LCD circuit
Floodlight and LCD directly be controlled on of off by CPU port circuit
Chart 7
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-689
Version: KG-689-0801-V1 Page 11 of 33
Circuit Description
7. Battery save circuit
One receive state the squelch turn off, if not press any key within 5 second, the power circuit will enter save
state mode, This control circuit through CPU directly control.
1 2 34
A
B
C
D
4
321
D
C
B
A
1
1
44
22
33
T1 A
S8212
88
55
7
76
6
T1 B
S8212
Sens
1
Do
2
VM
4Vss 5
ICT 6 Co
3Vc 7
Vcc 8
U1
S8 232 B
C9
224P
C6
224P
C8
224P
C1
224P
C5
254P
R4
4.7M
R3
1K
R2
1K
R8
1K
R5
1K
C4
102P
D1
DIO-1
B+
BC
B-
CH+
TEMP
CH-
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-689
Version: KG-689-0801-V1 Page 12 of 33
Circuit Description
8. Select power circuit
Power offset circuit as following:
TX POWER Power voltage of power amplifier
5V
Output 5V by U906 regulator circuit, used for reset
circuit power VDD of U511 U853 D711 and U8111.
5M
Output 5M by U911 regulator circuit, used for CPU
power VDD.
5C
T301 be controlled by the 40th side of CPU (811),
output 5C by 5V, used for PLL circuit, VCO circuit and
CR311 power circuit VDD.
5R
T202 be controlled by the 27th side of CPU (811),
output 5R by 5V, used for U261, T233, T253, T220
power VDD.
5T
T103 be controlled by the 26th of CPU (811), output 5T
by 5V, used for T113 T117 T430 T433 T171 U411 U170
and D146 D216 switch (transmit and/or receive
transform switch voltage).
POWER
P-7368
T451 and T453 be controlled by the 72th side of CPU,
output P-7368 power by BATT, used for U460 power.
VR411A
BATT
SB
5M
U911
U906
5V
T451
T453
P-7368
U811
第 72 脚
U811 第 38 脚
T301
T202
T103
5C
5R
5T
U711
T81 3
T81 2
U811 第 40 脚
U811 第 27 脚
U811 第 54 脚
U811 第 60 脚
T128 T13 0
图 8
C
hart 8
U811 72th
U811 38
th
U811 40th
U811 27th
U811 54th
U811 60th
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-689
Version: KG-689-0801-V1 Page 13 of 33
Circuit Description
9. CTCSS / DCS circuit
DCS signal output CTCSS audio frequency signal from the 15th feet of CPU (U811), and output DCS signal
from the 29th. When transmit CTCSS, the DCS output from CPU be modulated by low-pass; When receive,
directly disposed by CUP after through detection frequency.
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-689
Version: KG-689-0801-V1 Page 14 of 33
PARTS LIST
Designators Name and specifications Footprint
C211 Capacitance 0.5P C0402
C358 C351 C348 Capacitance 1P C0402
C213 C226 Capacitance 1.5P C0402
C251 Capacitance 2P C0402
C219 C228 C338 Capacitance 3P C0402
C217 C230 Capacitance 4P C0402
C349 C337 C335 C334 Capacitance 5P C0402
C372 Capacitance 7P C0402
C356 Capacitance 8P C0402
C216 C231 Capacitance 9P C0402
C321 C357 C229 C289 C377 C350 C332 Capacitance 10P C0402
C232 C227 C371 C117 Capacitance 12P C0402
C113 C111 Capacitance 15P C0402
C114 Capacitance 20P C0402
C115 Capacitance 22P C0402
C116 Capacitance 24P C0402
C117 Capacitance 27P C0402
C118 Capacitance 39P C0402
C119 Capacitance 51P C0402
C120 C1086 Capacitance 82P C0402
C121 C336 C461 C329 C327 C326 C325
C224 Capacitance 100P C0402
C122 C138 C212 C902 C328 C220 C222
C296 C322 C102 C439 C410 C376 C370
C365 C342 C123 C319 C121 C120 C115
C128 C125 C127 C1083 C1084 C1051
C1138
Capacitance 102P C0402
C124 C233 C901 C454 C1156 C4455
C224 C440 C451 C374 C364 C361 C331
C1128
Capacitance 103P C0402
C125 C137 C442 C444 C279 C298 C294
C281 C103 C445 C443 C1552 C435 C373
C366 C339 C126 C318 C303 C455 C101
C1056 C1023 C1127 C221 C1130 C133
C297 C1039 C301
Capacitance 104P C0402
C127 Capacitance 105P C0402
C128 Capacitance 180P C0402
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-689
Version: KG-689-0801-V1 Page 15 of 33
PARTS LIST
Designators Name and specifications Footprint
C129 Capacitance 200P C0402
C130 Capacitance 222P C0402
C131 C324 Capacitance 223P C0402
C132 Capacitance 224P C0402
C133 C286 Capacitance 332P C0402
C134 Capacitance 333P C0402
C135 C136 C234 C235 C375 C223 C225
C1131 C453 C452 C367 C363 C362 C118
C112 C145 C136 C126
Capacitance 470P C0402
C137 Capacitance 473P C0402
C138 Capacitance 474P C0402
C139 C237 C246 C355 C368 C352 C1017
C1019 C1020 C1015 C1012 C1009 C569
C572 C1014 C1040 C140 C1145
Capacitance NC C0402
C141 C1150 Capacitance 5P C0603
C142 Capacitance 8P C0603
C143 C153 Capacitance 10P C0603
C144 Capacitance 15P C0603
C145 C1038 Capacitance 18P C0603
C146 C143 Capacitance 22P C0603
C147 Capacitance 27P C0603
C148 Capacitance 30P C0603
C149 C129 C122 Capacitance 33P C0603
C150 Capacitance 47P C0603
C151 C130 Capacitance 102P C0603
C152 Capacitance 470P C0603
C153 Capacitance 680P C0603
C154 C1037 C140 C139 C131 C158 C142 Capacitance NC C0603
C155 Capacitance 104P C0805
C156 Capacitance 470P C0805
C157 R437 R341 R460 R454 R1082
R1026 Resistance 0R R0402
C158 R366 R462 Resistance 10R R0402
C162 R357 R221 R224 R376 R373 R371
R1086 Resistance 100R R0402
C159 R121 Resistance 22R R0402
C160 R118 R116 R124 Resistance 47R R0402
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-689
Version: KG-689-0801-V1 Page 16 of 33
PARTS LIST
Designators Name and specifications Footprint
C161 Resistance 91R R0402
C163 Resistance 150R R0402
C164 R1550 Resistance 180R R0402
C165 R145 Resistance 270R R0603
C166 R444 Resistance 330R R0402
C167 Resistance 470R R0402
C168 R338 Resistance 560R R0402
C169 Resistance 680R R0402
C170 R323 R336 R453 R349 R303 R203
R1122 R1053 R119 R114 R375 Resistance 1K R0402
C171 Resistance 1.5K R0402
C172 Resistance 1.8K R0402
C173 R452 Resistance 2K2 R0402
C174 R377 R325 R1070 Resistance 3.3K R0402
C175 R1152 R212 R102 R361 R112 R111
R372 R113 Resistance 4K7 R0402
C176 Resistance 5K6 R0402
C177 R439 R380 R374 R342 R115 R1121
R571 R1137 Resistance 10K R0402
C178 Resistance 15K R0402
C179 Resistance 22K R0402
C180 Resistance 27K R0402
C181 Resistance 30K R0402
C182 R1022 Resistance 33K R0402
C183 Resistance 39K R0402
C184 R220 R133 R320 R101 R125 R450
R857 Resistance 47K R0402
C185 R1055 Resistance 51K R0402
C186 R464 Resistance 56K R0402
C187 Resistance 82K R0402
C188 R345 R337 R1024 Resistance 100K R0402
C189 R313 Resistance 150K R0402
C190 Resistance 270K R0402
C191 Resistance 330K R0402
C192 Resistance 470K R0402
C193 R1021 R1031 R1016 R573 R572
R1018 R326 Resistance NC R0402
C194 Resistance 10R R0603
C195 Resistance 47R R0603
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-689
Version: KG-689-0801-V1 Page 17 of 33
PARTS LIST
Designators Name and specifications Footprint
C196 Resistance 150R R0603
C197 Resistance 47K R0603
C198 Resistance NC R0603
C199 Resistance 0R R0805
C200 Resistance 0R R1206
C196 Resistance 150R R0603
C201 Magnetic bead 10R R1206
C202 Exclusion Resistance 1K RP-1206-4
C203 Adjustable Resistance 50K RV1208
C204 E454 Multi-layer Capacitance 1uF C0805
C205 Multi-layer Capacitance 2.2uF C0805
C206 Multi-layer Capacitance 4.7uF C0805
C207 Multi-layer Capacitance 10uF C0805
C208 E1035E910 E912 Multi-layer Capacitance 22uF C0805
C209 E1134 Multi-layer Capacitance NC C0805
C210 Multi-layer Capacitance NC C1206
C211 E461 Tantalum Capacitance 10uF/10V EIA3216
C212 Tantalum Capacitance 100uF EIA3216
C213 High frequency multi-layer
inductance CH27nH L0603
C214 L283 L282 L337 High frequency multi-layer
inductance CH68nH L0603
C215 L1139 L117 L113 High frequency multi-layer
inductance CH100nH L0603
C216 L366 L350 L341 High frequency multi-layer
inductance CH120nH L0603
C217 L370 High frequency multi-layer
inductance CH220nH L0603
C218 Low-frequency multi-layer
inductance CI1uH L0603
C219 L363 Low-frequency multi-layer
inductance CI3.3uH L0603
C220 L345 L345 L1148 L1029 Low-frequency multi-layer
inductance CI6.8uH L0603
C221 Low-frequency multi-layer
inductance CI100nH L0603
C222 Low-frequency multi-layer
inductance CI270nH L0603
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-689
Version: KG-689-0801-V1 Page 18 of 33
PARTS LIST
Designators Name and specifications Footprint
C223 Low-frequency multi-layer
inductance CI560nH L0603
C224 NC L0603
C225 Low-frequency multi-layer
inductance CI100nH L0805
C226 Low-frequency multi-layer
inductance CI560nH L0805
C227 L223 L229 Winding Inductance CH68NH L0805
C228 Winding Inductance CH85NH L0805
C229 L1163 Winding Inductance CH120NH L0805
C230 L128 L145 L237 Winding Inductance CH220NH L0805
C231 Winding Inductance CH560NH L0805
C232 L354 NC L0805
C233 0.31*1.4*4T LC032319
C234 0.31*1.4*5T LC042125
C235 L215 0.31*1.4*7T LC-031638
C236 0.31*1.4*8T LC032334
C237 L154 0.31*1.7*4T LC032121
C238
High temperature without high
loop
0.4*1.0*3T LC032319
C239 D572 D326 Diode NC D-ESC
C240 D211 D111 D215 Diode HSC277 D-ESC
C241 D353 D352 D345 D345 Diode B9 D-ESC
C242 Diode MA2S11 D-ESC
C243 Diode BA592 D-USC
C244 T361 Dynatron 2SC4617 T-ESM
C245 Dynatron 2SJ243 T-ESM
C246 Dynatron DTA114EE T-ESM
C247 T202 Dynatron DTA114YE T-ESM
C248 T455 T453 T1123 Dynatron DTC114EE T-ESM
C249 Dynatron 2SC3357 T-SOT89
C250 Dynatron 2SK1588 T-SOT89
C251 T451 Dynatron 5B1 T-TSM
C252 Dynatron R25 T-TSM
C253 T375 T370 Dynatron 2SC4226 T-USM
C254 Dynatron 2SC4215 T-USM
C255 Dynatron ISS4181 T-USM
C256 Dynatron UMC4 T-USV
C257 Dynatron NC T-U SV
C258 Dynatron ISS372 D-USM
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QUANZHOU WOUXUN ELECTRONICS CO., LTD Model: KG-689
Version: KG-689-0801-V1 Page 19 of 33
PARTS LIST
Designators Name and specifications Footprint
C259 Impel Tube RD01 T-SOT 8 9
C260 T350 Single valve K52 T-TSM
C261 T220 Bigrid Valve U72 T-TSQ
C262 Power Tube 2SK3476 T-PD
C263 5V S POOU U-TSV
C264 Integrate Circuit 7088 U-SOP16
C265 Integrate Circuit 8870 SSOP-20
C266 Integrate Circuit TA7368 U-SSOP10
C267 Integrate Circuit LMX2331 U-SSOP20
C268 Integrate Circuit NC 264
C269 FL252 Crystal 38.850MHz FL-UM
C270 Crystal 19.2MHz FX-DS0507
C271 Patch Ceramic NC ZTA/ZTTCC
C272 Patch Ceramic 3.58MHz ZTA/ZTTCC
C273 Potentiometers RD91 S-RD810S
C274 Antenna seat ANTENNA ANT-KX01
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