Kenwood TK-8302 Service Manual page 56

TX-RX UNIT (X57-7680-XX)
1 1 1 1
R7 1k
PLCK
R6 1k R25 R30 R35 R21 L6 C56 R40
PLDT 0 0 1k 1.8k L4 270u 47p 0
R5 1k
PLLE
1
R973
R972 10
PLPS
1k
UL IC1
MB15E03SL-E1
PLL D4-11
3.3C IC
FREQUENCY CONTROL
(TX/RX VCO)
C33 L705 PLL
2p 15n FIN AMP
1.59V L9
4.19V
R955 C17 C98 C933 R81 L39 C936 C36 R27
Q729 470p 470p 0 15n 2p 1000p 0 Q3
PLL IC 0.65V 56k 0.1u 2SC5108(Y)F
CLOCK AMP
3.21V
Q729
KTC4075E(Y,GR)
C23 C939 D1
PLL UNLOCK L5 C54 R38 1SV325F
1.47V X1 3.28V 0.1u 0.1u
R938 L77-3055-05 DETECTION 270n 47p 0
C24 C940
47k 1 4 R10
VCoNT VCC 10u 10u
10
R73 L2
0 4.7u R15
2 GND oUTPUT 3 47k
1.90V
TCXO
19.2MHz
L7
ASSIST FILTER 9CL
7.54V
CN1
RX 2nd LOCAL LV IC2 Q11,12
DOUBLER AMP BD7542FVM ASSIST FILTER 9CL 9CL
0.73V 8.54V 1 8 CONTROL SWITCH
CN3 VCC Q11
R501 C506 C509 7 SSM3J05FU-F
330k 10p 0.01u 2
Q12
3 6 R65 R893 2SK1830F
Q500
4 5 10k 0
2SC5108(Y)F VEE
C32 R20
470p 1k
R522 9R
R553
0 CN503 0
R : 8.65V
MCF
R : 246V
XF500 CN505
R : 8.24V 38.85MHz
R528 C541 R530 RX 1st R550 C565
0 0.01u 390 R534 C550 MIXER
Q502 27 470p
390 0.01u R : 2.15V
2SC5108(Y)F R : 0.73V Q504
3SK318 RF BPF
IF AMP
TUNING
R : 0.90V
9R
C587
1u
5C
W : 4.96V
N : 0V
WIDE
FM IC
CF500
4.92V IC500
C511 C513 TA31136FNG SQUELCH ASTC ASTC
INPUT SWITCH ASTC
D500 0.1u 0.1u D501
1 16 Q511
MC2858 D500,501 MC2858 oSCIN MIXIN R531 R533 KTC4075E(Y,GR) R544
2 15 0 0 82k
W/N CF C521 oSCoUT GND
SWITCH 0.1u 3 14 Q501
CF501 MIXoUT N-REC RT1P441U
C512 C514 4 13
VCC N-DET
0.1u 0.1u C522 0.1u 5 12 CN501
IFIN RSSI SQIN Q510
C523 0.1u 6 11 C527 RT1N441U
DEC IFoUT
68p SQUELCH
W : 0V 7 10 Q501,507 INPUT CONTROL
N : 4.96V NARROW FILoUT QUAD DISCRIMINATOR SWITCH 5C
8 9 Q507 CONTROL
FILIN AFoUT
C520 RT1N441U SWITCH
270p
R511 C524 CN500
390k 1000p WIDE 2 2 2
RSSI
CN502
RSSI
NARROW
DISC DISC
FREQ FREQ
1 1 1
Q4 C73 6p
R : 3.87V R : 0.67V Q9,10 VCO BUFFER AMP TX/RX
RX VCO BAND SWITCH *IC301
D7 L19 Q4 C79 R77 6.71V 0.92V R : 0V POWER
1SV325F C62 27n MCH3914(7)-H 0.5p 0 0.74V 6.93V CN2 2.63V T : 3.29V MODULE
Q9 C84 C86 Q10 C90 D719
15p 2SC5108(Y)F 2SC5108(Y)F 2.5p R61 HVC131
6p 2p
0
D720
HVC131 L311
Q5,7 1.5T
R : 3.33V
TX/RX VCO T : 0V
SWITCH
R323
R63
R : 0V Q5 7.70V 39
T : 7.58V 4.7k
2SJ347F
Q7
KRX102U L24
9CL 9C
9R
R52 C354
R : 3.22V
1k T : 0V DC AMP (APC) 0.1u
C355
C74 8p T : 8.80V
TX DRIVE AMP 9T IC300 470p
T : 4.48V T : 0.84V HA17358BFEL-E
D6 C61 L18 Q6 Q300 R327 1 8 R341
12p 27n MCH3914(7)-H RD00HVS1-T113 VCC
100 7
T : 2.76V
Q6 C300 L300 L301 L302 2
15p
TX VCO 6.8n 4.7n 8.2n L303 L304 C322 3 6
27n 12n 270p RF RF
4 5
VEE
R345
VOLTAGE 100k
T : 2.78V PROTECTION
R343 R346 R349 D301
9CL
D12 0 47k 0 1SS355
7.51V Q8 9.03V
MODULATION TX POWER CONTROL
CONTROL (TX VCO) KTC4075E(Y,GR)
9T
R43
39k C546
8.20V 3p CN504
RIPPLE
FILTER R974 L504 C554
10 18n 4p
9CL
3 3
R : 8.94V
D506,508 R560
RF BPF 0
TUNING
D509,510
R : 8.59V RF BPF
C575 C577 TUNING
C871 C572 2p 1p C583 L515 R562
R : 7.52V
1p 1p 470p 18n 27 CN506 C595 C597
4p 5p
Q506 C591 R572 CN507
3SK318 R748
470p 0
R : 2.61V R : 4.02V C601 C603 R580 R532 R717 R729 100k
20p 8p 0 0
0 100k
FRONT-END
LNA
R718
56k C771
100p
FRONT-END 3 1.60V
9.03V NOTCH FILTER 25
VBIAS
9C R737 26
AUDIooUT
IC501 27k 27
3 3 AUXADC1
HA17358BFEL-E CN708 28
1 8 AUXADC2
VCC D711,712 29
7 C592 3.24V 30 AUXADC3
MIC AMP AGC DETECTION R724 AUXADC4
2 470p 0 31
AVDD
3 6 D711 SCRAMBLER 32
MC2858 R719 SWITCH AUXDAC1 BASEBAND IC
4 5 0 D712 33
VEE 1SS372F Q705 34 AUXDAC2
R731 SSM3J05FU-F AVSS2
RF BPF TUNING C749 100k
MIC MUTE R720 R733 10k
VOLTAGE DC AMP 100 0.1u APCC
SWITCH R732 1k
MIC/MOD AMP TVC
Q702
2SC4919 IC700 R3 R734 1k 35
NJM2100V-ZB AUXDAC3
1 8 R868 3.3C 82k R735 1k 36
17 VDD ASTC AUXDAC4
7 0
CN723 C739 R714 3.24V 3.3C
L700 0.1u 22k C747 R722
2
0.1u 2.2k 3 6
1.62V 4 5 R867 17
VSS C20 R862 R742
0 R957 0.01u 0 0
C924 C754 0.1u
Q701 C918 56k 1.60V C770
R708 2SK1830F 1u C925 1u 120p
10u
4.7k C765
MIC MUTE 0.65V C767
SWITCH 10u
Q730 C764 0.1u
KTC4075E(Y,GR)
0.01u C768
BASEBAND IC
2 2 CLOCK AMP 470p
17 17 17 3.3C
HSDO HSDO
MIC MIC
DISC DISC
FREQ FREQ
X57-7680-XX L305 2 2
-23 TK-8302 M2 18n
-15 TK-8302H K2 12n
ANT AF AF
1 1 1 1
R354 R357
0 0
R355 R358
COUPPLER
0 0
D302 C365 C373 C381
FORWARD POWER L407CDB 1000p 1p 1.5p
8 8
D303 C366 L314 L315
6
L407CDB 1000p 1.5T 1.5T
D302-305
REVERSE POWER ANT
SWITCH
T : 0.81V
RLED
6
GLED
T : 8.87V
9T 8
76
D312 BLED BLED
CP705 1k
REVERSE 6 6 77
POWER RECTIFIER KMO1 KMO1
78
VREV KMO2 KMO2
*D313
R382 D312 R895 1k 79
KMO3 KMO3
0 HSC277 R894 1k 80
0 KMI1
CP701 1k KMI1
6 81
*D314 KMI2 82 KMI2
R384 R383 KMI3 KMI3
TEMP1 83
0 0 UL
84
VFRD AF MUTE
85
M1MUTE 86 MIC1MUTE
D313,314 5 M2MUTE MIC2MUTE
POWER 87
4 4 4 HSDI HSDI
RECTIFIER TEMP DETECT 88
REVP 6 R790 LSDI LSDI
TEMP2 12k
FWBP
8 R794
1k 89
D310,311 2 TEMP2 TEMP2
R795 90
VOLTAGE PROTECTION 5 5 TEMP1 TEMP1 F364AEDFBKCUB
R787 1k
15k
BATT
DETECT
R792 R791 91
SB BATT
4 4 130k 1k
LSDI
3 3
R796 1k
RSSI 92 RSSI
R710 C735 R797 1k 93
SQIN SQIN
120k 0.1u R860 R798 94
AVSS
Q703 0 0
C743 KTC4075E(Y,GR)
0.033u C736 R939 R786 95
DETO CV CV
4.7u 0 1k
5.01V 96
L702 VREF
97
R764 98 AVCC
NARROW NARROW
6.8k DET AMP 99
LPF (D-SUB) WIDE WIDE
R952 100
HORN
0
R754 R759 2
100k 150k
R770 R775 R779 LSD0 LSD0
0 150k 47k R803
C773 C775
100p 390p 3 10k
R773 R778 R781 HSDO HSDO
5.6k 47k 100k
Q731,732
12
GPIoB R877 MCU CLOCK AMP
GPIoA 11 5M 8
47k
10 CN711
GPIo1
VDEC9 9 8
IC701 5M 5M 5M
8 2.15V
CD686Q3 IRQN 2.03V 5M
7 CN713
DVSS1 6 R959 R961 C19 XIN XIN 19.2MHz
BooTEN2 R771 C919 C920
5 15p 180k 180k 0.01u 3 3
BooTEN1 0 0.01u
4 Q732
EPSCSN 0.74V 0.66V 2SC5108(Y)F
3 Q731
EPSo 2 2SC5108(Y)F
EPSCLK SBC SBC
1 SBC 9
EPSI ASTSW
IC710 R774 R780 BEEP BEEP
VOLTAGE
2.2k 2.2k
REGULATOR
(3.3V)
5M
R782 Q707
KRC414RTK
1k
R785
1M
2
7 7 7
3.30V
3.3C IGNITION SENSE
CONTROL SWITCH
7
MIC MIC
2 2 ME
X57-7680-XX IC301 R338 C364 C372 D313 D314
2
-23 TK-8302 M2 S-AU83AL 18k 1.5p 4p HSB88AS-E HSB88AS-E
-15 TK-8302H K2 RA60H40471101 22k 3p 2p MA3J742 MA3J742
AF AF Q715,723
1 SP MUTE SWITCH LA4600
C821 R842 R843 AF AMP
1u 82k 2.2k
R : 3.28V
3.3M R838
Q715
4.7k SSM3K05FU
10 10 AMPSW AMPSW C832 C954 C955
3.29V 0.22u 1000p 1000p
C809 10 C882 R886 C883
11
0.1u 1u 82k 0.22u
C810
R : 3.28V
1000p
R884
Q723
4.7k SSM3K05FU Q721
AF AMP Q721
SWITCH RT1N441U
5C
50
9RC 9RC 11 11 Q713 IC704
VCC2=3.3V 9R SWITCH VOLTAGE REGULATOR (9V)
49 SPMUTE SPMUTE
SP MUTE 12 12 12
CSN1 48 CSN1 B
47 B
SCLK SCLK1 1 FB
46 FB
RDATA RDATA1 Q720
45 SB SB SB SWITCH
CDATA CDATA1 7 12 11
44 R820 9C IC704 C840
ECE TA4809BF 13.60V 13.60V
43 R951 47K PA PA CN725 9R Q713 9C CN726 1000p Q720 F700
PA 2SB1694 2 1 2SJ645 4A
42 0 9R oUT IN
PLCK PLCK
41 R : GND
PLDT PLDT 9.02V
40 3
PLLE PLLE Q711 9.04V
CN716 R935
39 EPM 47k 9R CONTROL SB
EPM SWITCH
38 R845
LPOSW CN750 9RC Q719
37 R817 10 Q711 Q719
BSFT 0 RT1N441U Q714 9T SWITCH 1k KTC4075E(Y,GR) SB CONTROL
PTT 36 PTT/TXD 7 CN727 Q714 SWITCH
IC702 9T 2SB1694 4.97V Q717
R823
35 R818 1k 9T 5C CONTROL SWITCH IC707
MCU HOOK HOOK/RXD 5C IC707
34 0 CN718 R826 T : 8.95V CN728 Q717 5.02V TA7805FQ VOLTAGE REGULATOR
RXD SSM3J05FU-F 5M (5V)
RXD 22k 2 1
CN720 oUT IN
TXD R824 R827 8 Q712
33 1.5k 47k GND IC708
TXD RT1N441U
CN717 R950 R835 3 VOLTAGE
47k 9TC DTECTION (INT)
EBSY 32 EBSY 10k 5M
11 3.24V
CN719 R999 3.3C
31 ECLK 47k 3.29V
ECLK 5C CN729 Q718 CN730 3.3M
CN721 SSM3J05FU-F 1
SBC NC
ERXD 30 ERXD SBC 2
12 SUB
CN722 5CC
ETXD Q712 3 GND
29 9 9T CONTROL SWITCH
ETXD
IC706
3.3M 3.3M 3.3C 3.3C CONTROL SWITCH XC6221B332NR
28
FNC1 VOLTAGE
FNC2 27 3.3M REGULATOR (3.3V)
26
VCC1=5.0V FNC3
5M 5M 5M
INT
RST
3 3
13 13
CN731
CN739
D700
DA221
R928 CN738
4.7k D701
3 13 DA221
R929
4.7k CN737
D703
DA221
5.01V 8
CN736
D700,701,703, D705
13 13 13 705,707-710 DA221
8 8 8 SURGE
5M PROTECTION D707 CN735
9 DA221
13
D708 CN734
3 3 3 DA221
10
CN733
D709
DA221
9 9
CN732
D710
10 DA221
D715 R829
EEPWP RS232C RxD
VOLTAGE 0
PROTECTION IC703 CN748
EX24064ASAS0A 3.29V
10 8 R930
Q710,722 1 8
A0 VCC 22k
OVER 2 7 Q728 RS-232C
VOLTAGE EEPROM A1 WP 2SC4116(Y)F RXD CONTROL
DETECT 3 6
SWITCH 4 A2 SCL 5 R833
VSS SDA D718
Q722 10k 12 VOLTAGE PROTECTION
KTC4075E(Y,GR) R891
0 R831 0 7
EEPDI
R892 R832 0 R834
Q710 EEPCK
0 10k
RT1N441U C814
1000p 12 12
IGN IGN
7 7 13 13
MIC MIC
8 8
ME ME
IC705
DISPLAY UNIT (X54-3670-20)
D1-5 KEY BACKLIGHT 4.06V 13.53V
J1 Q3,4
8 DM R10
DM KEY BACKLIGHT
7 HOOK HOOK 1k CONTROL SWITCH
6 MIC D1 D2
MIC B30-2282-05 B30-2282-05 4.08V Q3
KRA225S
R37 R11
5 ME 10
ME D3 D4 1k
4 PTT PTT B30-2282-05 B30-2282-05
3 GND R12
2 SB D5 1.90V 1.2k
J701 14
1 MBL R1 B30-2282-05
EXT
SP 100
D20
DA221 Q4
X57-7680-XX R933 R934 KRC102S-P
-23 TK-8302 M2 0 NO INT SP
-15 TK-8302H VOLTAGE
K2 NO 0
PROTECTION
TX-RX UNIT (X57-7680-XX)
CN724 CN1
SB 1 SB 30 SB
2 SB 29
3 SP+ 28 LED
SP+ SP+
4 27 DISPLAY
5 SP- 26
12 SP-
13.6V 6 SP- 25
14 Q5 R36
R981 0 7 LEDM 24 2SC3928A 8.2k
C889 470p LEDM R34
12 R982 0 8 MBL 23
C704 470p MBL 1k
R983 0 9 RLED 22
RLED RLED
C706 470p LED DIMMER
R984 0 10 GLED 21 CONTROL 4.94V
C708 470p GLED GLED
R985 0 11 BLED 20 SWITCH
BLED BLED 15 IC1
D717 R986 0 12 KMO1 R6 1k LED
KMO1 19 KMO1
VOLTAGE DRIVER
PROTECTION R987 0 13 KMO2 18 R7 1k
KMO2 KMO2
R988 0 14 KMO3 17 R8 1k
KMO3 KMO3
R989 0 KMI1 R3 1k
KMI1 15 16 KMI1
R990 0 16 KMI2 15 R4 1k
IC709 KMI2 KMI2
VOLTAGE R991 0 17 KMI3 14 R5 1k
KMI3 KMI3
DTECTION R992 0 5C L1
(MCU RESET) 5C 18 13
5M R993 0 19 LEDI 12
LEDI LEDI 16 CP1 1k
R994 0 20 LECE 11 15
IC708 LECE LECE LELH
BD4740G IC709 R995 0
5 XC6120N402N1 LECL 21 LECL 10 LECL LEDI
VCC LECL
1 4 R996 0 22 LELH 9
NC VIN LELH LELH LECE
R997 0 23 LERE 8
VoUT 4 LERE
2 3 D702,704,706 24 GND 7
VSS VoUT SURGE
14
PROTECTION 8
R856 25 MIC 6
RESET MIC
0 26 ME 5
ME
D704 HOOK R857 1k 27 HOOK/RXD 4 16
DA221 /RXD HOOK
R855 28 PTT/TXD 3
PTT PTT
D706 /TXD 100
R858
DA221
3.3k 29 MKEY 2 KMO1
MKEY DM
12 R998 30 POWER 1 15
POWER 16
0 SURGE
5M D702 PROTECTION
DA221 KMO2
CN702
FNC4 20
8 J700
RXAFI 19 6 Q1,2,7,8
FNC 1 TX/BUSY
RXAFO 18 1 INDICATION
SB
TXAFI 17 11 D22 LED SWITCH KMO3
16 FNC 6
ALTI *R934 INDICATION
NC 15
DETO 14 *R933 7 Q7 Q8
FNC 2 RT1P141U RT1P141U
DATAI 13 2
12 12
TXAFO 5C Q1 Q2
5C 5C 11 8 RT1N441U RT1N441U
FNC 3
NC 10 3 4.93V T : 4.65V
PA BUSY :
FNC1 9 HR1 13 4.54V
8 9
FNC3 FNC 4
FNC8 7 4 R42
DETO 1k BUSY : T : 1.87V
FNC7 6 HR2 14 2.32V
R703 FNC2 5 10 Q9 2.79V
4 FNC 5 5 2SC3928A
0 FNC6 DATAI
R701 FNC5 3 15 Q6 D23
2SC3928A B30-2151-05
0 R940 9C 2
TX/BUSY
0 GND 1 INDICATION
Q9 Q6
C886
LED DIMMER INDICATION
1000p CONTROL SWITCH LED SWITCH
Q724
2SJ645
12 R888
47k
13
8
5M
5C
SB
12 12 HORN ALERT
IGN IGN CONTROL
SWITCH
13 13 Q725
MIC MIC
KTC4075E(Y,GR)
R890
8 8 HORN
1K
ME ME
SB
B A S
CH
UP C
VOL VOL CH
DN UP DN