Service manual
-t
-t
-t
-t
5R
5MS
R126
27k
2SC4919
Q29
R194
10k
C258
0.1u
C290
470p
SEG31
C246
100u10
R140
10k
R252
100k
IC16
NJM2904V
1
2
3
4
GND
5
6
7
8
V+
R155
100k
C367
470p
Q51
RN4902
SEG5
C308
470p
R313
3.3k
R238 1k
C26
470p
CP2
3.9k
R312
4.7k
C346
470p
R206
15
IC10
S-80844CNNBB85
1
OUT
2
VDD
4
VSS
3
NC
COM3
R275
47k
C17
470p
CP33
1k
D5
HSC277
D80
DA221
C310
1u
R235
1k
D40
B30-2156-05
COM2
SEG3
L58
820n
C302
470p
C54
470p
SEG26
SEG4
C24
470p
R183
33k
C52
10p
C167
0.1u
R273
1k
R323
4.7k
CN7
1
2
3
4
5
6
R174
560k
CP32 1k
R200
10k
Q53
RN2701
R318
1k
C207
0.022u
2SK1830
Q35
C352
470p
R151
1.2k
C202
270p
COM3
C311
0.1u
2SC4617(R)
Q4
C257
1000p
R191
47k
D25
MA2S111
D43
B30-2205-05
R212
10k
R342 0
R215
470k
C255
10u10
SEG5
D30
RB521S-30
D46
B30-2205-05
R256
1k
MIC1
C191
0.01u
R182
1k
R179
220k
D79
DA221
SEG6
SEG23
SEG18
C187
2p
CP34 1k
R127
47
CP31
3.9k
L64
4.7u
R272 4.7k
R115 5.6k
R161
1.8k
2SC5488
Q6
C305 470p
C295
5p
C228
0.1u
R201
4.7k
R204
180k
R343 0
R218
0
SEG17
SEG17
C19
8p
2SC5488
Q2
C313
0.039u
SEG1
C226
0.1u
CN6
1
2
3
4
5
6
R285
0
D16
MA2S111
R164
47k
R263
10k
C170
0.068u
C344
470p
F3
0.5A
C286 1u
R117
2.7k
(D)
J4
SP
D26
1SS388
SEG21
Q22
RN2105
C180
120p
R198
10k
IC8
90522BPFFG139
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
COM2
62
COM3
63
VSS
64
SEG16
65
SEG17
66
SEG18
67
SEG19
68
SEG20
69
SEG21
70
SEG22
71
SEG23
72
SEG24
73
NC
74
NC
75
SEG25
76
SEG26
77
SEG27
78
SEG28
79
SEG29
80
SEG30
81
SEG31
82
V0
83
V1
84
V2
85
V3
86
HST(VCC)
87
MD2
88
MD1
89
MD0
90
RESET
91
VSS
92
X0
93
X1
94
VCC
95
PWRSW
96
INTUP
97
INTDW
98
DCDET
99
RXLED
100
BSFT
101
PLLEN
102
PLLLD
103
KIN0
104
KIN1
105
KIN2
106
KIN3
107
KIN4
108
TYPE
109
VUKEY
110
MICM
111
NOAA
112
5R
113
SHIFT
114
5T
115
KOUT0
116
KOUT1
117
KOUT2
118
KOUT3
119
VSS
120
BTDET
C186
24p
C1
0.01u
C11
470p
C256
1000p
R20
1k
SEG2
C223
470p
C168
0.1u
SEG1
R153
1k
R310
3.9k
C46
100p
D36
RB521S-30
C242
0.01u
C309
1u
CP1 2.7k
D27
RB706F-40
C345
470p
R15
5.6k
R5 100k
R216
10k
R286
0
R124
3.3k
SEG24
C41
4.7u6.3
C27
10u10
L46
560n
R207
1k
C294
5p
SEG19
C239
470p
CF1
L72-0968-05
C208
82p
R177
10k
L9
22n
C366
470p
D72
MA2S111
C4
470p
2SJ347
Q36
SEG6
C205
0.047u
R242
330k
SEG19
C224
0.1u
R9
150
R173
15k
R147
10k
C249
470p
R326
0
R236
1k
IC11
S-80930CNNBG80
1
VSS
2
VDD
4
OUT
3
CD
D35
RB521S-30
CN8
1
2
3
4
5
6
7
8
9
10
11
12
13
14
SEG16
SEG11
C307
0.1u
R135
470k
C45
100p
R116
120k
R346
100
R210
12
SEG18
R37 27k
R152 2.2k
J2
R355
0
SEG30
R332
15
L63
S7
S70-0485-05
C317
470p
R18 33
SEG22
C300
470p
R197
100
C360
0.1u
R7
47k
D24
MA742
C281
470p
C365
470p
IC6
TA 73 68F
1
2
3
4
5
6
NF
7
PHASE
8
PRE-GND
9
PW-GND
10
POUT
L50
R203
470k
Q52
RN1107
IC5
NJM2107F
1
2
3
4
5
V+
C190
0.01u
D42
B30-2205-05
C20
5p
CP35 1k
R36 10
IC9
TK11250CM
1
2
3
4
VOUT
5
GND2
6
VIN
IC15
AT 25160N10SI27
1
2
3
4
5
6
7
8
2SK1830
Q31
SEG12
CN9
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C241
470p
C22
4p
C174
180p
SEG0
J3
MIC
SEG8
R6 1k
D64
MA2S111
Q47
RN1701
R254
1k
R283
0
C10
0.01u
D32
RB051L-40
D48
B30-2237-05
SEG15
R119
1.8k
SEG22
C229
0.1u
CN1
1
2
3
4
5
6
SEG11
C220
4700p
C175
22p
C243
470p
C56
470p
C276
470p
C197
0.027u
SEG0
R325
47k
SEG21
R181
470
R144
0
C124
0.1u
R163
470k
C355
0.01u
C316
0.1u
C176
0.1u
C284
470p
C247
0.1u
R230
*
CN2
1
2
D22
1SS361
C42
470p
R125
560
SEG7
C13
0.5p
(B)
C40 0.1u
C248
0.1u
R11 150k
R226
220
SEG29
C335
0.1u
R253
1k
C303
150u6.3
SEG20
D71
MA2S111
C173
180p
R156
100k
C231
470p
D81
RB521S-30
C219
0.047u
2SK1830
Q27
2SC4617(R)
Q21
X1
12.8MHz
L77-1931-05
VC
GND
OUTPUT
VCC
C319
10u10
R132
2.2k
R246
3.9k
R122
2.7k
LV
2SK1830
Q3
R195
100
2SC5488
Q5
SEG27
SEG25
2SC5488
Q24
C330
470p
TH3
100k
R128
3.3k
R38 27k
R202
47k
COM0
CPH3317
Q55
R130
100
C210
0.01u
2SC4617(R)
Q38
C225
1u
D31
DA221
C354
470p
TH4
100k
F1
2.5A
SEG3
D33
RB051L-40
R336
220
R145
4.7k
C318
470p
C227
2.2u4
C358
0.047u
C37
470p
C182
0.1u
R328
470k
R231
150
R205
100
R141
1k
SEG9
D65
MA2S111
R188 47
IC4
XC6202PB52FR
1
2
4
GND
3
C359
0.1u
SEG13
C221
0.01u
R330
470
R118 27k
SEG28
SEG24
C279
470p
R255
0
L53
12n
C338
1u
2SC4617(R)
Q30
C240
470p
R17
3.3k
C51
22p
C285
470p
C172
1800p
IC12
TK11250CUCB
1
NP
2
GND
3
CONT
4
VIN
6
VOUT
R227
100
SEG12
R193
1.8k
SEG30
C270
470p
R337
470
C183
0.1u
R335
1k
C169
0.068u
CPH3417
Q56
R148
5.6k
D60
*
SEG2
X3
7.982MHz
R178
0
R282
0
R32
1k
R120
2.7k
R133
1k
COM0
C312
0.039u
D70
MA2S111
C21
470p
L49
R162
270k
2SK1830
Q34
SEG14
SEG23
C6 470p
D7
MA2S111
R243
330k
SEG13
C195
10u10
C293
47p
SEG14
C7
0.5p
(B)
R12
47
C291
470p
R185
270k
C193
4.7u6.3
C166
0.01u
SEG29
D41
B30-2157-05
IC1
LMX2316TMX
1
2
3
4
5
6
7
8
GND3
CE
CLK
DATA
LE
FO/LD
VCC2
VP
C43
0.01u
C332
0.1u
C50
22p
IC3
TA 31 13 6FN
1
2
3
4
5
6
7
8
9
AFOUT
10
QUAD
11
IFOUT
12
RSSI
13
N-DET
14
N-REC
15
GND
16
MIXIN
R160
4.7k
C282 470p
R8 100k
D63
*
C280
470p
R10
47
C189
470p
C171
470p
C201
1200p
SEG8
C222
0.01u
R134
390k
R276
47k
C238
470p
R4
1k
R208 10
SEG28
R180
39k
C236
0.01u
R277
47k
R131 330k
COM2
C57
10p
2SK1830
Q20
R213
22k
C235
0.01u
R16
270
C304
470p
L67
C250
1u
R237 100k
C30
470p
R21
4.7k
D34
MAZS0270H
R35 120k
COM1
SEG27
C252
100p
C347
470p
R14
3.3k
C15
12p
C511
470p
R189
0
C206
0.018u
C230
1u
SEG9
SEG10
R19
120k
C353
470p
C38
0.01u
R199
1k
Q57
RN2105
VR5
50k
C188
24p
D69
MA2S111
C5
0.1u
R123
1.8k
LCD (B38-0881-05)
1
COM0
2
COM1
3
COM2
4
COM3
5
SEG0
6
SEG1
7
SEG2
8
SEG3
9
SEG4
10
SEG5
11
SEG6
12
SEG7
13
SEG8
14
SEG9
15
SEG10
16
SEG11
17
SEG12
18
SEG13
19
SEG14
20
SEG15
21
SEG16
22
SEG17
23
SEG18
24
SEG19
25
SEG20
26
SEG21
27
SEG22
28
SEG23
29
SEG24
30
SEG25
31
SEG26
32
SEG27
33
SEG28
34
SEG29
35
SEG30
36
SEG31
KTC4082
Q23
SEG7
R176
820k
CD1
450kHz
R211
470k
R137
4.7k
SEG26
VR1
100k
C314
470p
R209
100k
R248
3.9k
C237
10u10
C336
0.1u
R217
820
SEG25
Q41
RN2105
C348
470p
D62
*
C44
100p
SEG16
R190
47k
C271
470p
C198
1u
D47
*
2SB1184(Q,R)
Q37
C194
0.1u
C272
470p
C25
470p
SEG15
2SB1184(Q,R)
Q33
C196
0.027u
R196
10k
C253
10u10
C18 470p
C14
470p
SEG31
SEG20
C209
470p
L8
18n
R192
470
R175
2.2k
SEG4
2SK1830
Q50
C55
0.01u
D49
B30-2237-05
L45
560n
COM1
C306 47p
SEG10
D44
*
C192
0.01u
C283
470p
R214
10k
D13
HVC131
R47 5.6k
L65
27n
2SK2596
Q11
C78 470p
C96 1p
(B)
CN10
L17
2.5n
L21
4T
R41 270
D73
MA2S111
2SK3476
Q12
D12
HVC131
C82
470p
C364
18p
L54
4.7n
C363
10p
C61
470p
R56 10k
L18
220n
C369
470p
C83
0.01u
R64 0
C361
470p
R46
10k
R39 270
L19
4T
C93 3p
(B)
2SK1830
Q58
C324
470p
C97 4p
(B)
C100 2p
(B)
C95 2p
(B)
2SC4617(R)
Q15
R271
12
R33 22
D8
HSC277
L14
4.7n
L20
4T
R54
47
C75
470p
C94
470p
L30
C66
0.1u
R55 4.7k
C328 1u
C67
470p
R49
1k
R62 270
C64
470p
C72
0.1u
C71
470p
R53 1k
R60 56k
C329
12p
C91
470p
C99 5p
(B)
C323
470p
L10
18n
R45
3.3k
L22
4T 4T
R42 0
R347
150
R58 47
C88
20p
(G)
D10
HVC131
C70
1u
C86
56p
L23 1u
L11 15n
L16
L13
L56
6.8n
R289
0
R51 470
C102
3p
(B)
R50
33
D9
HSC277
L15
4.7n
C77
47p
C89
33p
R61 270
C357
1u
D11
HVC131
C84
0.1u
C327
0.1u
2SC5488
Q9
C87
18p
C73
470p
R344
47
R52 1k
C101 4p
(B)
C90
470p
C76
8p
C98 2p
(B)
C65 10p
C326
470p
D74
HSM88AS
C68
10p
2SC4926YD
Q10
R59 12k
R34
3.3k
R348
68
R85 560
R77
150k
(D)
Q14
RN4902
R78 150k
(D)
C113
470p
R86
5.6k
TH1
10k
C118
470p
C112 470p
R74 100k
(D)
D14
RB521S-30
R71 0.39
R70 0.39
R83
56k
C109
470p
2SK1830
Q13
C105
470p
C108
100p
R82
27k
C106
470p
C115
470p
C111
470p
C117
470p
R76
150k
(D)
C512
*
R75
100k (D)
R80 10k
IC2
NJM2904V
1
AOUT
2
A-IN
3
A+IN
4
GND
5
6
7
8
R84
100k
R81 390k
C107
470p
R72 0.39
C116
10u4
C114
470p
R79
150k (D)
D15
MA8039
C356 0.01u
C110
470p
L25
C132
0.01u
C164 470p
C162
470p
3SK318
Q16
C128
0.01u
R107 100k
L36
56n
R88
330
D20
1SV305
R103
1.8k
L40
4.7n
R97 150k
C131
0.01u
L26
470n
R91
1k
R352
0
R111
1.0M
C146
4p
(B)
C140
4p
(B)
C133
0.01u
D18
1SV305
L35
150n
C129
11p
R108
120k
C130 470p
R110
1.0M
C152
470p
XF1
L71-0619-05
C126
10p
C141
470p
C145
8p
(B)
L41
6.8n
L32
27n
C158
13p
(G)
L38
12n
L34
27n
C125
1.5p
R90
330
R351
220
C156
470p
D21
1SV305
C142
470p
D19
1SV305
C144
18p
(G)
R101
47
C161
3p
(B)
R104
150
R109 100k
R98 100k
3SK318
Q17
R95
180k
C148
6p
(B)
C165 3p
(B)
R96
100k
R99
1.0M
C134
470p
C153
470p
C147
470p
C159 3p
(B)
R100
1.0M
R92
3.3k
C160
13p
(G)
C163
470p
C157
18p
(G)
R93 47
R94
330
C137
7p
C136
5p
C139
470p
C135
5p
L24
27n
L28
12n
L29
15n
C29
22u6.3
L5
270n
2SK508NV(52K)
Q1
L6
270n
C8 5p
(B)
C3
2p
(B)
L3
22n
C2
39p
(G)
L2
270n
CN15 CN17
L4
6.8n
D3
HVC376B
D4
HVC376B
D1
HVC376B
D2
HVC376B
L1
270n
C34
2.2u6.3
C33
0.22u35
R31
2.2k
C35
0.1u35
R24
1.2k
R30
1k
C371
470p
C372
470p
C370
470p
D61
MA2S111
C368
470p
L68
C200
0.01u
R154
4.7k
R143
27k
VR6
50k
TH2
100k
R139
4.7k
R146
4.7k
R142
1k
R165
820k
C349
0.1u
R158
330k
IC17
NJM2904V
1
2
3
4
GND
5
6
7
8
V+
C339
0.047u
C204
0.033u
R324
47k
C331
470p
C211
2200p
C203
120p
R168
180k
C212
0.012u
R159
120k
R166
820k
R167
180k
C351
0.01u
C213
4.7u6.3
R171
39k
(D)
R170
56k
(D)
R157
330k
C9
5p
(B)
C177
10u10
C178
0.01u
C179
0.1u
C374
*
C510
0.047u
D6
1SV278
L27
680n
R223
100k
R234
18k
R353
0
R354
33k
R241
330k
R240
100k
C299 1u
C298
470p
NI-MH
TEMPERATURE
DETECTION
IF AMP
SQ FILTER
D1-4
RF AMP
5R
VCO FREQUENCY CONTROL
KIN3
SMV
RF AMP
GND
FREQUENCY SHIFT
SQV
BL
RIPPLE FILTER
KYO1
VCO SHIFT
CONTROL SW
Q37
RF AMP
KYO2
AF MUTE SW
VCO
KIN4
PTT
RESET
TX/BUSY
LED SW
INT0
KEY LED SW
SET
LCD LED SW
SHIFT
VOLIN
+B
VOLOUT
+B
D81
BEAT SHIFT SW
Q36
5T SW
Q33 OPERATION SW
AVR
CONSTANT-
VOLTAGE
5C SW
5MS SW
5T
5C/5R/5T AVR5C/5R/5T AVR
SP
5C/5R/5T AVR
5T
T0
+B
SPG
DCS BAL
SP MUTE SW
EEPROM
REM
DC IN
CHARGE SW
2nd L.O.
PLLEN
DATA
CLOCK
PLLLD
Q31
450kHz
Q56 OPERATION SW
WIDE/NARROW
CHANGEOVER SW
AF FILTER
5.0V AVR
TX-RX UNIT
(X57-675X-XX)(C/3)
FM IC
TX-RX UNIT (X57-675X-XX)(A/3)
SPK
MARKET CODE
DETECTION
SPG
D62-65
PLL IC
FREQ
D69-72
PTT BOARD
REVERSE
CURRENT
PREVENTION
BIT0
SPEED UP
DC IN
DETECTION
KEY
ILLUMINATION
LED
REVERSE CURRENT
PREVENTION
BTEMP
PTTE
ENCB
TXD
ENCA
REM
RXD
D42-44,46,47
BIT3
5MS
BIT1
BIT2
TYPE
KEY
W/N
8 OHM
MICM
LAMP
CHARGE
PTT
JUMPER
MIC ALC
RECTIFICATION
MONI
MIC MUTE
CONTROL
REVERSE CURRENT
PREVENTION
D79,80
MENU
LIMITER
SP MUTE
SPEED UP
4
VOX DETECTION
RECTIFICATION
CALL
11.5V AVR
5C/5R/5T AVR
#
5MS
0
8V
BATTERY
TERMINAL
TX-RX UNIT
(X57-675X-XX)(B/3)
AF AMP/
LAMP AVR
8M
VFO
KIN4
DTMF/BEEP/1750
5
MIG
VOX
DETECTION AMP
F/CALL
REVERSE CURRENT
PREVENTION
LAMP
5MV
10KEY BOARD
GND
KYO0
1/F
KIN2
MIC
MUTE
SW
TRIPLER
KYO1
6
KIN0
KYO2
SQV
*
MIG
2/VFO
D6
VOLOUT
POWER SW
VCO MODULATION
IM
KIN1
IM
CTCSS/DCS FILTER
KYO3
MIC AMP
5R/5MV
SW
PTT
5R
3.3V VOLTAGE DETECTION
MIC
5R
3/MR
5R
4.4V VOLTAGE DETECTION
MIG
DTMF/1750
SPM
MAX DEV
5.0V AVR
TXD
IM
MPU
CONSTANT-
CURRENT
CIRCUIT
IM
REM/TXD
AF AMP
PTTE
SPK
HPF
AFO
RXD
SMV
VGG
VDD
ANT
RF SW
RF SW
RF AMP
5R
DRIVE
AMP
Q10 OPERATION SW
5T
VOLTAGE
DROP
DRIVE
AMP
5T
OVER INPUT
PROTECTION
ANTENNA SW
D12,13
ANTENNA SW
ANTENNA SW
5T
POWER
AMP
Q12 GATE
VOLTAGE SW
APC
+B
KAPC(APC KILL)
1st MIXER
RX 1st AMP
5R
TEMP COMPENSATION
KAPC KAPC
5R
V/U
5M
QT/DQT
X57-675X-XX
5R
5MV
5T
APC
DIFFERENTIAL
AMP
APC OUTPUT SW
VGG
APC
CIRCUIT
OPERATION
SWITCH
5T
5T
PTTE
SPM
RXD
TXD
5T
TEMP
+B
5MS
LAMP
BPF/APC BPF/APC
BPF/APC BPF/APC
BPF/APC
TH-K4AT
TH-K4E
R239
MOD
ENCB
5MS
TO
VOLIN
NAR
ENCA
5MS
MOD
NAR
VOLIN
ENCB
ENCA
BUSY LEDTX LED
ROTARY
ENCODER
&
VOL KNOB
GND
ENCA
GND
ENCB
VOLIN
VOLOUT
1
VCC
VIN
RIPPLE
D26
C246 DISCHARGE
VOUT
VSS
VIN
D33,35,36
REVERSE
CURRENT
PREVENTION
Q38
Q37 OPERATION SW
DCDET
BTDET
8V
BTEMP
CHARGE
AFAMP
5M
+B
8V
BTDET
DCDET
5M
CHARGE
+B
BTEMP
AFAMP
TXD
IM
RXD
MIG
SPM
PTTE
MICM
RXD
IM
SPM
PTTE
MIG
TXD
IM
MICM
TXD
SPM
RXD
MIG
PTTE
REM
TONE
VOXIN
DTMF/BEEP
RXLED
REM
TONE
VOXIN
DTMF/BEEP
RXLED
SIGIN
VOLIN
NAR
ENCA
MOD
ENCB
5C
TO
5MS
5R
QT/DQT
5T
5MV
+B
5C
+B
5MS
ENCB
NAR
TO
SIGIN
MOD
5T
5R
QT/DQT
ENCA
VOLIN
5MV
SEG14
SEG15
VSS
C0R1
ENCA
ENCB
5MS
DVC C
DVS S
DTMF/BEEP
TONE
AVC C
AVRH
AVR L
AVS S
REM
SIGIN
SQ
SM
VOXIN
THERM
BATT
BTEMP
VCC
CHARGE
LAMP
AFAMP
NAR
COM0
COM1
CLOCK
DATA
EEPDI
EEPCS
VOX
BPF/APC
KAPC
VCC
AFM
SPM
RXD
TXD
PTTE
PTTI
5C(SAVE)
FINAL
SEG0
SEG1
SEG2
SEG3
SEG4
SEG5
SEG6
SEG7
SEG8
SEG9
SEG10
SEG11
SEG12
SEG13
KAPC
AFM
SHIFT
FINAL
CLOCK
DATA
PLLEN
PLLLD
5MS
5MV
CLOCK
5T
NAR
VOLIN
+B
SQV
SMV
PLLLD
KAPC
AFM
PLLEN
SHIFT
TO
MOD
5R
5C
DATA
QT/DQT
FINAL
TEMP
5M
QT/DQT
5MV
+B
SQV
SMV
DATA
KAPC
PLLLD
AFM
PLLEN
SHIFT
NAR
5T
5MS
TO
MOD
5R
5C
VOLIN
CLOCK
TEMP
FINAL
5M
BATT
LAMP
5MS SW
SI
SCK
HOLD
VCCCS
SO
WP
GND
5M
+B
8V
IM
MIG
5M
PTTI
5C SW
5R SW
5T SW
VOX
EEPCS
EEPDI
BPF/APC
INT0
PWR SW
RESET
KIN4
KOUT2
KIN0
KOUT1
TYPE
KIN1
VUKEY
KOUT0
KOUT3
KIN3
KIN2
5M
+B
5C/5R/5T AVR
IM
MIG
8V
RESET
5R SW
5T SW
PWR SW
INT0
VUKEY
KIN3
KOUT0
TYPE
KIN2
KOUT3
KOUT1
KIN1
KIN0
KIN4
KOUT2
VOX
BPF/APC
EEPDI
EEPCS
5C SW
PTTI
5M
BATT
5MS SW
LAMP
5C
5MS
DATA
CLOCK
D61
UHF TYPE DETECTION
KEY TYPE DETECTION
D60
D48,49
LCD
ILLUMINATION
LED
5T
NAR
VOLIN
+B
SHIFT
PLLLD
5C
PLLEN
AFM
KAPC
DATA
QT/DQT
5MS
5R
TO
MOD
CLOCK
SMV
SQV
FINAL
TEMP
PLLLD
PLLEN
SHIFT
+B
5C
NAR
VOLIN
5T
QT/DQT
5MS
5R
TO
MOD
CLOCK
DATA
KAPC
AFM
SQV
SMV
TEMP
FINAL
DATA
5R
CLOCK
TO
PLLLD
5C
SHIFT
AFM
5MS
PLLEN
MOD
NAR
QT/DQT
SMV
SQV
VOLINVOLIN
PLLLD
CLOCK
5R
PLLEN
AFM
5C
SQV
SMV
QT/DQT
NAR
DATA
BPF/APC
SQV
SMV
NAR
AFM
5R
BPF/APC
OSCIN
OSCOUT
MIXOUT
VCC
IFIN
DEC
FILOUT
FILIN
FLO
CPO
GND1
GND2
FIN
FIN
VCC1
OSCI
D16
PLL LOCK DETECTION
KAPC
TEMP
FINAL
FINAL
TEMP
FINAL
TEMP
B+IN
B-IN
BOUT
V+
D14
REVERSE CURRENT PREVENTION
APC OUTPUT
VOLTAGE LIMITTER
D15
1st IF
38.85MHz
D18,19
RX BPF TUNING
RX BPF TUNING
D20,21
0-21
2-71 E
M2
NO
D44
B30-2205-05
NO
B30-2205-05
D47
MA2S111
NO
D60
MA2S111
D62
NO
D63
MA2S111
NO
R230
220
NO
C374
NO
100p
C512
100p
NO
9
10
11
12
13
14
15
16
89MR7
1k
C297
0.1u
R244
0
WIDE/NARROW
CHANGEOVER SW
CONT
GND1
NP
R172
10k
R186
68k
T:4.95V
R:0V
Reference voltage value are measured when the power supply voltage is 13.8V(DC IN).
1.51V 4.81V
4.95V
T:3.29V
R:110mV
T:73mV
R:3.39V
T:0V
R:4.62V
ON:4.91V
ON:4.92V
4.63V
3.76V
T:4.95V
R:0V
3.23V
7.14V
4.93V
13.57V
4.80V
4.79V
4.98V
4.83V4.95V
ON:6.98V
7.12V
11.43V
13.8V
13.40V
4.63V
T:0V
R:4.90V
5.03V
T:4.95V
R:0V
T:4.99V
R:0V
0.72V
0.51V
4.77V
W:115mV
N:4.94V
4.42V
2.03V
T:4.31V
R:0V
1.43V
T:4.86V
R:0V
1.98V
10.37V
4.91V
10.56V
T:0V
R:0V
4.56V
2.80V
4.30V
4.56V
3.10V
3.14V
4.81V
2.30V
(HIGH POWER)
T:0V
R:4.90V
2.02V
Note :The components marked with a
dot (
● ) are parts of layer1.
TH-K4AT/K4E
SCHEMATIC DIAGRAM