Kenwood TKR-851 Service Manual page 71
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Also See for TKR-851:
- Service manual (101 pages) ,
- Service manual supplement (16 pages) ,
- Programming reference manual (83 pages)
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TX-RX UNIT (X57-696X-XX) (B/2)
SB
8C
1.81V
1.8C
3.30V
3.3D
3.31V
3.3A
R690
47k
DEI
DEO
C643
R654
R668
DET
0
18k
10u10
R680
22k
C662
R678
10u10
100k
R707
22k
R653
0
MULTIPLEXER
IC605
BU4053BCF
1
Y1
VDD
Y0
Z1
Z
Z0
INH
VEE
VSS
8
C642
0.01u
5TONE
RXI
GND
MIC
DEI
5C
DATA
MB
MO
RXO
TXI
TXO
BEEP
Q
SCHEMATIC DIAGRAM
IC624
XC62FP1802P
5.03V
1.8V AVR
3
2
VOUT
VIN
1
IC625
3.3V AVR
XC62FP3302P
5.02V
3
2
VOUT
VIN
1
IC626
3.3V AVR
XC62FP3302P
5.05V
3
2
VOUT
VIN
1
IC624-628,630
VOLTAGE REGULATOR
C647
100p
R673
220k
TH701
R844
-t
330k
10k
AF AMP
IC608
TA75S01F
C697
10u10
3
4
IN(-)
OUT
C698
2
VEE
1
5
10u10
IN(+)
VCC
C648
0.01u
0.01u
C685
IC610
AF AMP
TA75S01F
1
5
IN(+)
VCC
2
VEE
3
4
IN(-)
OUT
C684
100p
R736
R683
120k
R737
47k
R717
47k
R718
47k
C726
180p
C736
C724
1800p
1800p
R722
AF AMP
AF AMP
330k
C725
47p
R672
100k
16
Y
X
X1
X0
A
TDS
B
MIS
C
TAS
R674
9
C649
R
5V AVR
IC627
TA78L05F
8.03V
1
3
OUT
IN
2
IC628
TA78L05F
5V AVR
1
3
OUT
IN
2
IC630
TA78L05F
5V AVR
1
3
OUT
IN
2
CODEC
IC614
AK4550VT
16
1
VCOM
AOUTR
AINR
AOUTL
AINL
PWDA
VSS
PWAD
VDD
SCLK
SCLK
DEMO
MCLK
MCLK
DEM1
LRCK
LRCK
SDTO
SDTI
SDTI
8
9
SDTO
47k
C739
C744
180p
10u10
R738
270k
C740
100p
C679 10u10
C690
R684
47k
100p
R842
R685
100k
0
R686
C652
100p
100k
R676
82k
AF AMP
82k
33p
C681
IC607
68u6.3
AF AMP
S
TKR-851
AMPSW
1
5
AM
INB
VCC
2
SPM
INA
3
4
GND
OUTX
INVERTER
IC621
TC7S00FU
NAND GATE
Q605
R745
DTC114EUA
47k
4
3
CONT
GND
2
OUT/IN
5
1
R744
VCC
IN/OUT
39k
IC622
TC7S66FU
MULTIPLEXER
RS232C
TRANSCEIVER
IC620
ADM202EARN
9
8
RXD0
R2OUT
R2IN
TXD0
T2IN
T2OUT
C777
T1IN
V-
C775
1u25
C763
R1OUT
C2-
1000p
1u25
R1IN
C2+
C776
T1OUT
C1-
C761
C779
1u25
GND
V+
0.1u
1u25
VCC
C1+
16
1
C722
C729
R713
R719
150k
27k
10u10
10u10
TH700
R843
-t
270k
10k
R714
C821
22k
100p
AF AMP
IC617
NJM4558E
R709
R721
22k
22k
C822
100p
R715
C723
1u
10k
D/A CONVERTER
IC615
M62364FP
12
13
VIN5
VIN4
MO
VOUT5
VOUT4
VOUT6
VOUT3
MB
VIN6
VIN3
R812
DO
DI
DAT
22k
VDAref
CLK
CLK
RESET
LD
LD1
GND
VDD
VIN7
VIN2
C701 10u10
TA
RD
VOUT7
VOUT2
VOUT8
VOUT1
TD
RA
R841
0
VIN8
VIN1
24
1
C715
0.01u
X57-696 (B/2) 4/5
T
SB
AMPSW
RXD2
DXD2
RD1
GND
RA1
TD1
5C
DATA
TAI
GND
59
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