Kenwood TK-2312 Service Manual page 51

TX-RX UNIT (X57-7880-20)
BUSY TX S I GN TH_DET
LCD B30-2314-05
B30-2315-05
B30-1790-05
D 8 0 4 D 8 0 5 D 8 0 1
DC S W 33M
BLUE LED
2 S K 1 8 3 0 F
D C S W ON:3.3V
Q 8 0 5
3.3V
D C S W
Q 8 0 1 LEDGRE
Q 8 2 1 U PA 6 7 2 T- A
2 S B 1 6 9 4 LEDRED
R 9 6 1
0 RX: 0V
TX:3.3V
7.4V
D C S W SB LCDBL LCDBL
2 S C 4 6 1 7 ( S )
Q 8 2 0 R 9 5 2 3.3V HSDEC
R 9 6 0 33MS
0
3 3 0
R 9 6 8
L C D B A C K L I G H T R 9 5 3
1 k
4 . 7 k
BUSY LED
ON:3.3V
VOX
BUSY
BUSY
R 8 3 0
1 0 k (D)
LEDBLU LEDBLU
WID/NAR
10kx4 3 3 C P 8 2 1
C P 8 2 6 10kx4 MIC_MT
SEG29 S E G 2 9 S E G1 2 1 6 SEG12
SEG30 3 4 MANDN
S E G 3 0 S E G 11 1 5 SEG11
SEG31 3 5 SEG10
SEG32 S E G 3 1 S E G 1 0 SEG9
1 4
3 6
S E G 3 2 S E G9 13
SEG33 R 9 3 6 3 7 C P 8 2 0 R 8 3 1
S E G 3 3 SE G8 10kx4
1 0 k 1 2 SEG8
3 8 0
S E G 3 4 L C D S E G7 11 SEG7
3 9 SEG6
S E G 3 5 D R I V E R S E G 6 SEG5
C N 8 0 1 10
V R 1 7.5V 4 0 R 8 3 2
E 4 0 - 6 8 2 7 - 0 5 S E G 3 6 IC821 S E G5 9
R 3 1 - 0 6 7 6 - 0 5 1 B C P 8 1 9 0
4 1 S E G 3 7 NJU6434 S E G4 10kx4
8 SEG4 C P 8 0 2
2 SB 4 2
S E G 3 8 SE G3 7 SEG3 1kx2
3 AFI VOLIN 4 3 SEG2 LEDGRE LEDGRE
S E G 3 9 S E G2 SEG1 LEDRED LEDRED
6
4 AFO 4 4
S E G 4 0 S E G1 5
5 GND 4 5 C P 8 1 8 EN2
S E G 4 1 C o M 4 10kx4 EN1
VOLOUT 4
6 UP 4 6 S E G 4 2 COM4
Co M3 COM3
W1 3 COM2 33MS 33MS
W 0 2 - 3 7 4 8 - 0 5 7 DOWN 4 7 S E G 4 3 Co M2 COM1
2
8 GND 4 8 S E G 4 4
C o M 1
1
SB 5CC
33M 33M R 8 1 6
1 0 0 k
3.3V
C 9 5 0 R 9 9 2
820k
1 u
C 9 5 1
3.3V
1000p
4KEY S A B C
R E S E T
VOLIN VOLIN
33MSC 33MSC
1 AV R HSDDEC
3KEY 2 3 KEY4O I C 8 0 4
X C 6 2 0 9 B 3 3 2 M R INT0 INT0
D 8 2 9 3 3 M VOLOUT VOLOUT
KEY1I R 8 0 7 1 V I N
Vo U T
5 1 S S 3 8 8 F 0 5 5CC
4 6 2 V S S ON:3.3V
R:7.4V
D 8 3 0 KEY2I T:7.2V 3 C E
N C
4 I C 8 0 2 AVR
1 S S 3 8 8 F X C 6 2 0 9 B 5 0 2 M R
7 8 9 3.3V 5.0V
D 8 3 1 1 VI N
KEY3I Vo U T 5
2 VSS
1 S S 3 8 8 F 7.4V
0 #
* 3 C E
D 8 3 2 N C 4
KEY4I
1 S S 3 8 8 F 5 0 C
KEY3O I N T
KEY2O I C 8 0 5
X C 6 1 C N 4 5 0 2 M R INT 33MS
KEY1O
VOX
R 8 2 2 DC S W 33MSC
PTT V I N Vo U T ON: 0V
L302 V S S 1 k
Q 8 0 4
PTT S S M 3 J 0 5 F U - F MIC_MT
WID/NAR
Side1 PF1
SB SB
SIDE1
BUSY
Side2 PF2 PTT/RXD PTT/RXD
SIDE2 B B
GND
THDET THDET
THDET
AFCONT AFCONT AFCONT
CVIN CVIN CVIN
BATT BATT
C P 1 100x4
PL_STB
PL_DAT
PL_CLK
3.3V PL_UL
33M
33M
TCX O 3.3V
R5
1 R 9
V C o N T VCC 4
100 R 11 1 0 k
E E P R O M 10k
2
CM_CSN I C 8 1 0 G N D oUTPUT 3
CM_DTI
1 S VCC X1 L1 R8 C 11
8 1 6 . 8 M H z
2 L 7 7 - 3 0 5 0 - 0 5
Q H o L D 4.7u 3 3 0 0.01u
7
3 W C
R 9 7 8 6
4 1.6V
0 V S S D
5
6 1
QT/DQT 4 0
R 9 9 3 6 2 CM_CLK
CVIN CE 3 9 33M 33M
4 . 7 k (D)
6 3 BATT EP_CS
3 8 CM_CLK
6 4
VOX EP_DTI
R 9 8 1 3 7 R 9 8
6 5 BUSY
0 EP_WP 3 6 1 8 k
R 8 3 6 6 6 C98
TH_DET 5RC
3 5 R 7 1 3 1000p
1 k 6 7 RSSI EMP DCSW
3 4 4 . 7 k
6 8 CM_DTO 4 R 9 9 R 1
WID/NAR CM_DTO oUT I N +
3 3 3 1 8 k 0
6 9 ASSIST MCU
EP_CLK 3 2 3.3V V S S 2
7 0 5
AF_MUT EP_DTO V D D I N -
I C 8 2 0 3 1 1 R6
7 1 MIC_MT F 3 6 3 B E D F E K D L B R7
5TC 30
R 8 5 5 7 2 IC3 T C 7 5 S 5 1 F E ( F ) 0 10k
MAN_DN 5VC
0 2 9 DCSW DCSW
7 3 5RC
5CC TX/RX 2 8
R 8 5 0 7 4 TX/RX TX/RX
LEDBLU APCSW
1 k 2 7 EM_CLK
7 5 APCSW APCSW
AVSS EM_CLK 26
7 6
GRNLED RXD AVR IC806 X C 6 2 0 9 B 3 3 2 M R
2 5 50VC 7.4V 3.3V
7 7 3 3 B
VREF TXD 2 4 L 8 0 3 1
V I N Vo UT
7 8 AVCC 33MSC 5
23 2 VSS
7 9 LEDRED NC
3
OPTDET PL_DAT 22 CE N C
8 0 4
2 1
50M 50M B E AT S H I F T
BSHIFT BSHIFT ON:3.3V
OFF: 0V
33MS 33MS L 7 8 - 1 4 3 4 - 0 5
R989
LSDO 19.200MHz
1k TXD TXD
UCLK UCLK
RESET MODE 50C 50C
3.3V VSS C 8 5 0 X 8 0 2
R 8 5 8 R 8 5 7 VOLIN VOLIN
1 0 0 0 p
R 8 5 2 VCC 0 6 8 7.4V
C 8 4 9 I C 8 0 1 XC 6 2 0 9 B 5 0 2 P R
1 0 0 k Q 8 0 6
R 8 5 4 0 . 1 u R 9 3 2
4 VIN 2SC4919-S R879 0
C E 3 B E AT S H I F T S W
0 1 0 k AVR
V S S CM_DTO R880
2 CM_DTI
5 0
50C VoUT N C 1 C866 1 0 u
50M R: 0V
T:3.3V
5TC
R881
Q 8 0 2
DC SW S S M 6 L 0 5 F U - F 5 0 T 0
OPTDET
7.4V
R882
3.3V 5.0V
C 9 1 3 3300p H S D L P F CM_CLK 0
50VC CM_CSN
ON:3.3V
C 8 4 2 H S D A M P CM_IRQ
R:3.3V 50VC 50VC
3 9 0 0 p
1 A o U T V + T: 0V AVR XC6209B502PR
C 8 4 0 8 D C S W Q 8 0 3 R: 0V I C 8 0 3
2 S S M 6 L 0 5 F U - F 5 0 R T:4.9V
A - I N B o U T 7 4 VI N
3 3 0 0 p R 8 4 4 R:4.9V C E 3
H S D H P F 3 A + I N B - I N C882
6 T: 0V 5.0V
4 0 V S S 2
G N D B + I N 5 Vo UT 1 0 0 0 p
5 N C 1
R 8 6 5 R867
R 8 3 9 R 9 1 6 I C 8 0 8 50V
N J M 2 9 0 4 R B 1 - Z B
0 1 2 k 2 2 k 1 0 k TXD
50T 50T
50R 50R
LSDO1 LSDO1
ASSIST ASSIST
HSDENC HSDENC
QT/DQT
QT/DQT QT/DQT
VOX VOX VOX
RSSI RSSI
HSDIN HSDIN
33M 33M
MICMT MICMT
WID/NAR WID/NAR
PTT/RXD1 PTT/RXD1
SB SB
EMPTT EMPTT EMPTT
BUSY BUSY
PTT/RXD PTT/RXD
OPTDET OPTDET
VOLOUT VOLOUT VOLOUT
B B
THDET THDET
50C 50C 470
R 6 0
L2 3.7V
5.0V R 1 6 5.0V 15n
LOIN LOIN C 2 0 C29 C 3 4 R 6 2
10 2.5V
4 7 0 p 1 5 p 4 7 0 p 68k
Q2
CVIN
2 S C 5 6 3 6
2.2V
IC2 DC AMP RF BUFF
7 LD BD7542FVM
CV(A) RX VCO
CPVSS 2 4
8 PDN2 1 M C H 3 9 1 4 ( 7 ) - H
P L L - I C SWIN o U T 1 VDD
9 PDN1 2 3 2 8 R27 L 4 L7 D 1 2 C 5 1 Q 4
CPZ IN1- oUT2 CV CV
IC1 2 2 7 1 0 k 1 0 u
10 REFIN R28 3 R17 R 1 9 R20 1SV325F 4 7 p
A K 1 5 4 1 CP IN1+ IN2- CP CP
TEST2 2 1 0 6 0 680 0
11 PVSS 4 VSS I N 2 +
2 0 5
12 TEST3 R 1 4
BIAS 1 9
2 2 k CPZ CPZ
3.2V
R 1 5
10 TX VCO
R 2 9 D8
M C H 3 9 1 4 ( 7 ) - H
4 7 0 k C47 Q5
C 3 5 L5 1SV323F
D 9
33MS 10u 82p
0.01u
1SV323F
16.8M 16.8M
50C 50C 50C
D C AMP I C 8 11
H A 1 6 3 0 D 0 3 M M
5.0V
1 Vo U T1
VDD 8
2
VIN1- DC SW DC SW R 3 9
Freq 3.3V Vo U T2 7 R 6 8
3 Q 11 Q12
33M VIN1+ 6 SSM3J05FU-F 2 S K 1 8 3 0 F 56k
4 VIN2- 0
V S S
MOD1 VIN2+ 5
VCOS R 6 7
VCOS
1 0 k
50C
DCSW DCSW
TX/RX TX/RX
MOD2 MOD2
AF_CONT AF_CONT
50T 50T
APCSW APCSW
R824 50V
C876 50V
8 2 0 k (D) 50M 50M
33M 33M
1 0 u BPF1 BPF1
C 8 7 4 R890 R892 R 9 6 2 C915 PC/BPF2
PC/BPF2
0.1u 1 5 k 0 1 0 k 1u TXD TXD
ASSIST ASSIST
C877 3.2V
50R 50R
1 0 0 0 p PC/BPF2[1]
R897
27k
R898 DETAF DETAF
37 2 . 2 k
DVSS3 MoD2 24 R902 C896 M I C A G C
38 MIC MIC
VDEC2 MoD1 A G C A MP
23 1 0 k 0 . 1 u Q 8 1 0
39 D807 2SC411 6(GR)F
XTAL/CLoCK AVSS1 22 R893 K D R 7 3 1 R906
C897
40 XTALN MIC 0
BASEBAND IC 21 1 k
41 0 . 4 7 u
DVDD MICFB 20 MICFB MICFB
42 CoMMANDDATA I C 8 1 2 ALTFB RECTIFICATION
19 R 8 9 9 C909
43 C D 6 8 6 Q 3 C892 R910 R912
REPLYDATA ALT 18 1 2 0 k 1u C898
R907 1 0 k 0.1u 0
44 NC DISCFB 0 . 4 7 u
17 2 . 7 k Q 8 11
45 D 8 0 8 KDR731
DVSS4 DISC 16 2 S A 1 5 8 6 ( Y, G R ) F RECTIFICATION
R900 C893 D 8 1 0 M C 2 8 5 0
46 SERIALCLoCK GPIo2 A G C A MP R 9 11
15 1 0 0 k RECTIFICATION R908
47 4 . 7 u
SYSCLoCK2 DVSS2 14 1 0 k
Q 8 0 9 1 0 0 k
48 CSN SYSCLoCK1
13 KTC4075E(Y, GR) R909 1M
C907 4 7 p
RECTIFICATION
R903
R891 C904
1 0 0 4 oUT
C878 I N - 3
4 7 k 0.47u
V S S
3.2V 0 . 0 1 u D 8 0 9 2
C879 K D R 7 3 1 5
VDD I N + 1
1 0 u
3.3V VOX AMP
IC817
50V
TXD T C 7 5 S 5 1 F E ( F )
50T V O X
50R
C949
ASSIST
HSDENC 1000p
VOX VOX
RSSI RSSI
DISCFB
33M
33M
MICMT MICMT
WID/NAR WID/NAR
PTT/RXD1 PTT/RXD1
SB SB
EMPTT EMPTT
BUSY
BUSY
PTT/RXD PTT/RXD
OPTDET OPTDET
VOLOUT VOLOUT
B B
R211 R213 D R I V E
R 2 0 3 R206
R: 0V 1 0 1.2k R D 0 1 M U S 1 - T 113
T:1.5V
R: 0V 10 2.2k Q 2 0 4
T:1.4V
P R I - D RV
C215 R217 C217 L 2 0 6
RF AMP 2SC5455-A
R:2.1V 2 S C 5 6 3 6 C265 C209 Q203 1 2 39n
T:2.0V Q 2 0 1 2 2 p 30p
C 7 2 C 7 3 C201 R237 C 2 6 4 R205
3 3 p 30p R: 0V
3.9V C 8 5 1000p 0 4 7 p 0 T:0.8V
5 p (B) 15p (B)
R 4 4 3.6V R: 0V H : 2 . 1 V
RF BUF RF AMP 22p T:0.7V L:1.7V
L 2 5 C 7 7 R221
22 2 S C 5 6 3 6 2 S C 5 6 3 6
Q9 1 5 n LO LO 5 6 k
Q8 1 8 p 3.4V
R: 0V
C66 T:4.9V
R 4 6 50T
0 . 5 p
1 5 0 k
4.6V
0.7V THDET THDET
R 4 5
22 RT1 N 1 4 0 U - T 111 R303 R308
R: 0V Q 3 0 1
T:4.2V 4.2V D C S W 5 6 0 1.8k R314 R315
R:4.2V
R301
C67 T: 0V 4 7 0 k (D) IC301 1 0 k D C S W
0 R318
L 1 6 C308
0.5p SSM3J05FU-F 1 AoUT 470k
V+ 8 RT 1 P 4 4 1 U - T 111
R I P P L E DC SW Q 7 R 3 11 10p 2
A-IN B o U T
FILTER 1 5 0 k 7
5.0V (D) 3 A+IN
K T C 4 0 7 5 E ( Y, G R ) B-IN 6
Q3 4
R312 GND B+IN
5
1 5 0 k
(D) N J M 2 9 0 4 R B 1 - Z B
DC SW Q 6 A P C
FB
SSM6L05FU-F
R: 0V 7.5V
T:3.4V D C S W
R: 0V R317
T:3.3V R:3.3V D C S W
T: 0V 2 S K 1 8 2 4 - A
0
50C 50C D C S W Q 3 0 3 Q 3 0 4
DCSW DCSW 2 S K 1 8 3 0 F
RT1N141U-T111
AFCONT AFCONT
50T 50T
APCSW APCSW
50V 50V
50M 50M
33M 33M
BPF1 BPF1
PCBPF2 PCBPF2
TXD TXD
50R
50C
R 4 1 4
LOCAL
100
C415 50R 50R
4.8V
50C 50C
R410 3 9 p
0.6V C410 L 4 0 2
2NDLO 2NDLO 5.0V R:5.0V
3 3 0 k
2 2 p 1 0 0 n T: 0V
Q 4 0 3 R:4.8V R437
K T C 4 0 8 0 E - P T: 0V
C496 FM SYAT EM 4.7k
TRIP
0.1u I C 4 0 1
R469 WIDE N J M 2 5 9 1 V
CF402
33k 5.0V L72-1010-05 C429 R433 R:0.7V
DC SW 1 oSCIN T: 0V L 4 0 8 L 4 1 0
C406 C404 MIXIN 16
I C 4 0 2 NJ U 7 1 0 8 2 oSCoUT 3 3 p 6 8 0 k X F 4 0 1 49.95MHz 56n 5 6 n
C433 L71-0655-05
0 . 1 u 0.1u GND 15 R425 IF AMP R434 C444 C447
1 MIXO MIXO 3 MIXoUT
IN- V D D 5 NoISEREC 14 0.01u 2 2 0
2 4 V+ 0 2p (B) 3p (B)
VSS Q 4 0 5
R471 C414 NoISEDET 13 K T C 4 0 8 0 E - P
3 IFIN IFIN 5 IFIN L79-1866-05
IN+ OUT 4 RSSI 12 CD401
4 . 7 k 0.1u C418 6 DEC C424
0.1u IFoUT 11 5 6 p
Narrow 7 FILoUT BPF
QUAD 10 R424
C F 4 0 1 R417 8
L72-1045-05 FILIN 1.8k
D401 C403 C405 D402 1 5 0 k AFoUT 9
0.1u 0 . 1 u L 4 0 9
R419 C 4 1 9 R421 2 2 0 n
K D S 1 2 1 E - P K D S 1 2 1 E - P 82k 5 6 p 3.3k R438
F I L S W
F I L S W R:3.1V
RSSI BUSY 1 k M I X E R
W:3.3V W/N SW T: 0V
C445 Q406
N: 0V R428
1 3 p 3SK318
R422 C452
0 1 0 0 0 p
3 . 3 k
D C S W
WID/NAR WID/NAR
Q 4 0 1
DETAF DETAF
RT1N441U-T111
RSSI RSSI
MIC MIC
PTT/RXD1 PTT/RXD1
SB SB
EMPTT EMPTT
BUSY
BUSY
PTT/RXD PTT/RXD
OPTDET OPTDET
VOLOUT VOLOUT
B B
THDET THDET
FINAL
C222 DRVOUT DRVOUT ANT SW
R D 0 7 M U S 2 B T 112
STRIP LINE L 2 1 2 L 2 1 3 L 2 1 4 C240 R231 C243 D201 C247 L 2 1 9 L 2 2 0 L 2 2 1
82p Q205
3T 5T 6T 1000p 0 1000p 1 0 0 0 p 6T 9T 8T
H V C 1 3 1
R229 C249 C253 C256
D202
4.7
R230 1 5 p 6 p 7 p
H V C 1 3 1
4.7 A N T S W
H : 1 . 1 V
L : 0 . 9 V
L 2 1 0
TXBIAS TXBIAS
R: 0V
H : 3 . 5 V R: 0V T:0.8V
L : 2 . 9 V APCDB APCDB
T:4.9V
50T 50T
L 4 1 5
L 2 1 7 R 2 4 0
9T 0
R:5.0V
T: 0V
50R 50R A N T S W
Q306 R:4.2V
T:0V
C459 C 4 6 1 C466 C467 C495 R448
RXRF RXRF
0
1 0 0 0 p 1000p 6 p (B) 6p(B) 4 7 0 p R457 C478 R458 C482 C 4 8 4
R F A M P
Q 4 0 7 0 1 0 0 0 p 0 6p (B) 6p (B)
3 S K 2 9 4 - FP
R:3.0V C487 C489
T: 0V
1 0 p 33p
(B)
BPF TUNING BPF TUNING
Q 3 0 5
B P F B P F
TUNING TUNING
50V 50V
50M 50M
33M 33M
BPF1 BPF1
TXD TXD
AFCONT AFCONT
FB
33M
50R 5.0V
PTT/RXD
R929 E11-0703-05
1k J802
PTT/RXD
MIC
MICIN
R928
Q 8 1 6 Q 8 1 5 OPTDET
2 7 k 5M
U PA 6 7 2 T- A UPA672T-A D C S W AE
Q 8 2 2 TXD
L E V E L L E V E L NC
C O N V E RT E R RT1 N 1 4 1 U - T 111 SPO
C O N V E RT E R TXD SPI
R930
1 0 0
PTT/RXD PTT/RXD C926
MIC MIC
MUTE ON:7.4V MUTE ON:3.3V 1 0 0 u 6 . 3 R931
OFF: 0V OFF: 0V
0
A F A M P R924
I C 8 1 5 4 7 0 k A F M U T
7.5V A F M U T
TA7 3 6 8 F G
DC SW Q 8 1 8 Q 8 1 9
1 N C1 2 S K 3 5 7 7 - A 2 S K 3 5 7 7 - A
Q 8 1 4 P o U T
2 S B 1 6 9 4 10
SB SB 2 V C C
P W- G N D 9
R445 C455 3 N C2 P R E - G N D
8 C924
4 V IN
0 1000p PHASE 7
R:3.1V 1 0 0 p
T: 0V 5 R IP PL E N F
C914 R915 6
1.5k
1 u DC SW
7.5V
(2.5A)
F801
Q 8 1 7 FB L 8 0 1
DC SW RT1 N 4 4 1 U - T 111
F 5 3 - 0 3 2 4 - 1 5
C922
PROTECTION
0.1u MUTE
PTT/RXD1 PTT/RXD1 Q 8 1 3 ON: 0V
OFF:7.4V
SB RT1 N 1 4 1 U - T 111
EMPTT EMPTT
FB FB
OPTDET OPTDET
VOLOUT VOLOUT (1.0A)
F802
B B
F53-0319-15
A N T
L 4 20
47n
E X T-
S P / M I C
INT-MIC
I N T-S P
+
7.5V
BATTERY
-