Kenwood TM-V71A Service Manual page 85

F
TX-RX UNIT (X57-731X-XX) (D/6): CONTROL SECTION
5M
DTMF
1
2
3
4
BSHIFT
5
NC
R930 6
BYTE
47k 7
NC
8
NC
9
NC
10
RESET
11
XoUT
12
VSS
13
XIN
14
VCC1
R932 15
NMI
47k 16
NC
17
SIS
18
INT
19
XSW_LD
20
PKD96_MUTE
21
EEPCS
22
EEPSO
23
MIC_MUTE2
24
EEPCK
25
EEPSI
ELECTORICAL
VOLUME IC
IC804
M62364FP-F
1 24
VIN1 VIN8
2 23
VoUT1 VoUT8
3 22
VoUT2 VoUT7
4 21
VIN2 VIN7
5 20
VDD GND
6 19
LD RESET
7 18
CLK VDAREF
8 17
DI D0
9 16
MODAMP_OUT
VIN3 VIN6
10 15
VoUT3 VoUT6
11 14
VoUT4 VoUT5
12 13
VIN4 VIN5
C874 0.1u
C875 1000p
TCXO
AVREF
4CH OP AMP
IC805
NJM2112V-ZB
1
AoUT DoUT
2
A-IN D-IN
3
A+IN D+IN
4
V+
5
B+IN C+IN
C873 R875 R876 6
B-IN C-IN
1u 120k 120k 7
BoUT CoUT
R877
0.1u
330k C880
C881 1000p
TONE AMP_B
Note : The components marked with a dot (
G
SCHEMATIC DIAGRAM
DTMF/1750
TONE
AMP_STB
MPU
IC918
*
XSW
CROSS POINT
SW IC
IC806
BU8241FS
1
SOUT
2
VDD LATCH
C894 3
VB CLK
10u10 4
GND DIN
C895 1u 5
IN1 OUT1
C896 1u 6
IN2 OUT2
C897 1u 7
IN3 OUT3
C898 1u 8
IN4 OUT4
CP802
C899 1u 9
IN5 OUT5
C900 1u 10
IN6 OUT6
C901 1u 11
IN7 OUT7
RK74HB1J473J C902 1u 12
IN8 OUT8
PKD AMP
INT
AVREF R883
100 18V
ZENER
DIODE
Q918
R882 R889 C891 DTC144EE
SW
1u
560k 10k
OVER VOLTAGE
DETECT
14
13 R887
12 10k
11
V- RESET
10
9 R884 R888 C887
8 120k 120k 1u
R885
390k
TONE AMP_A
•
) are parts of layer 1.
H
TM-V71A/V71E
L917
TOIN_A
TOIN_B
75
SB_C
74
NC
73
NC
CP922
72
RTS(PC)
71
CTS(PC)
70
SQC(EXT)
69 RK74HB1J102J
PKS(EXT)
CP923
68
TEMP
67
VSF
66 RK75HA1J102J
VBSY
65
CP924
VPLY
64
VEN
63
VRST
62 C934
VSS2 RK74HB1J102J
61 1u
NC
60
VCC2
59 C933
NC
58 1000p
DA2_EN
57
2099_EN
56
B_PLLEN
55
A_PLLUL
54
A_PLLEN
53
B_PLLUL
52
SIM0
51
SIM1
R946 47k
CP925
RK75HA1J102J
R909
R908 10k
10k
2CH ANALOG SW
IC807
TC7W66FK-F
1 IN_oUT1
2 oUT_IN1
CoNT1
3
CoNT2
oUT_IN2
4
GND
IN_oUT2
24
PS
23
22
21
20
19
18 Q817
2SK1824-A
17
SW
16 C903 1u
15 C904 1u
14 C905 1u
13 C906 1u
INT
RESET IC
IC919
BD4840FVE
1 5
VoUT VDD
2
SUB
3 4
NC GND
DTMF DECODER
IC921
LC73881M-E
1
INPUT
2
PD
3
RESET oSCo
4
5M oSCI
5
RESET IC VSS
IC920
BD4840FVE
C945 0.1u
1 5
C946 1000p
VoUT VDD 5M
2
SUB
3 4
X917
NC GND
L78-0459-05
4.19MHz
I
S5M
S5M
8C
L951
8C
5C
L952
5C
SB_C
ILLM
IGN
TXD(PC)
RXD(PC)
RTS(PC)
CTS(PC)
SQC(EXT)
S5M
PKS(EXT)
R938 47k
PKD(EXT)
R939 47k
PR1(EXT)
RTS(PC)
CTS(PC) SM_A
SQC(EXT) SQ_A
PKS(EXT) VSF
TEMP TEMP
VSF SM_B
VBSY SQ_B
VPLY
VEN DET_A
VRST PR(PNL)
DET_B
VBSY
VPLY
DA2_EN VEN
2099_EN VRST
B_PLLEN DA2_EN
A_PLLUL 2099_EN
A_PLLEN TR_CLK
B_PLLUL TR_DT
SIM0 B_PLLEN
SIM1 A_PLLUL
A_PLLEN
B_PLLUL
VGSPLAY
TCXO_A
SIM2
VCO_B
SIM3
VCO_A
SIM4
TCXO_B
SIM5
VGSREC
SIM6
SIM0
MIC_MUTE1
SIM1
SIM2
DA1_EN
TCXO_A_MUTE
TCXO_B_MUTE
CN961
CNT_CLK
CNT_DT INTSP
CB
CB
CB
VOLTAGE DETECT
R992
BATT
270k
5.1V
ZENER
DIODE
13.75V
SW SCB
SCB
Q953
CPH6122
R969
SCB
8 0
VCC
7
6
5
SW PB
Q951
SCB_C
DTC144EE
C978
1000p 10V AVR
IC952
BAJ0CC0T
10V
R987
PB
0
5M
5V AVR
IC953
TA7805FQ
5V
R986
2
5M oUT
0
GND
3
SW S5M
Q954
DTA123JUA
S5M
10
VDD
9
SW
EST
8
Q952
STD S5M_C
DTC144EE
7
ACK
6
SD
X57-731X-XX
0-11 K 3062LFGPUKBVB
2-71 E 3062LFGPUKBWB
0-21 M4 3062LFGPUKBWB
X57-731 (D/6) 2/2
J
1
CN960
50 S5M
49 NC
48 8C
47 NC
46 5C
45 NC
44 SB_C
43 ILLM
42 IGN
41 TXD(PC)
40 RXD(PC)
39 RTS(PC)
38 CTS(PC)
37 SQC(EXT)
36 PKS(EXT)
35 PKD(EXT)
34 PR1(EXT)
33 GND 2
32 SM_A
31 SQ_A
30 VSF
29 TEMP
28 SM_B
27 SQ_B
26 GND
25 DET_A
24 PR(PNL)
23 DET_B
22 GND
21 VBSY
20 VPLY
19 VEN
18 VRST
17 DA2_EN
16 2099_EN
15 TR_CLK
14 TR_DT
3
13 B_PLLEN
12 A_PLLUL
11
A_PLLEN
10 B_PLLUL
9 VGSPLAY
8 TCXO_A
7 VCO_B
6 VCO_A
5 TCXO_B
4 VGSREC
3 SIM0
2 SIM1
1 SIM2
1 CB
2 GND
3 GND 4
4 INTSP
SP
13.75V
5
POLY-SW
D956
MINISMDC110F16
REVERSE
CURRENT
PREVENTION
1
IN
6
7
IC918
85