Kenwood TM-V71A Service Manual page 83

AJ
TX-RX UNIT (X57-731X-XX) (A/6): TX-RX SECTION
8V DC
8TV SW
T:7.9V
Q585
12A02CH
8TV
R578
1.8k
8TV_I
8TU SW
T:7.9V
Q586
12A02CH
8TU
R579
1.8k
8TU_I
SW
8TVA
T:7.95V Q587
DTA123JUA
8TVA
SW
8TUA
T:7.95V Q588
DTA123JUA
8TUA
SW
8TVB
T:7.95V Q589
DTA123JUA
8TVB
SW
8TUB
T:7.95V Q590
DTA123JUA
8TUB
D582
8TVA_C
DAN222
REVERSE
CURRENT
PREVENTION
8TVB_C
8TUA_C
8TUB_C
AVR
B
CB
SB SW
13.75V
Q592
CPH6122
SB
SB_C
DTC144EE
C596
1000p
8V AVR
IC578
8C
KIA7808API
3 oUT
8C
8C
GND
2
5V AVR
IC579
5C
5V TA7805FQ
2
5C oUT
5C
GND
3
Note : The components marked with a dot (
AK
SCHEMATIC DIAGRAM
8V
8.0V
8C
REVERSE
CURRENT 8TU
PREVENTION
D584
APCV
DAP202K
IC186
TC7W66FK-F
2CH ANALOG SW
APCU
8TV
FWD_REF
REV_REF
REVERSE
CURRENT
PREVENTION
VSF
D583
VFS
DAN222
F576
3A
F53-0392-05
F577
PKD(EXT)
3A
F53-0392-05
5C
PKS(EXT)
SW
Q591
PR9(EXT)
PR1(EXT)
1
IN SB
SQC(EXT)
8V
1
IN 8C
CTS(PC)
RTS(PC)
TXD(PC)
RXD(PC)
S5M
•
) are parts of layer 1.
AL
R186 R191
47 220k
C212
0.022u
R189
27k
REVERSE
CURRENT
OP AMP
PREVENTION
IC187
NJM2904V-ZB
C210
0.022u
R190
390k
R188
6.8k
R192
33k
SURGE
ABSORBER
D607,609
LIMITER
C687
1u
D607
R608
15k REVERSE
CURRENT
PREVENTION
DA221
R619
10k
C670 REVERSE
CURRENT
2.2V
47p PREVENTION
R611 C613
1.2V
220k 10u10
R606 C606
5.6k 4.7u Q607
0.6V
2SC4617(R)
C672
AMP
3.5V
100p
R612 C614
2.1V
220k 0.047u
C607
0.1u
1.5V
Q606
2SC4617(R)
AMP
C612
0.1u
9 8
CP606
R2oUT R2IN
10 7
T2IN T2oUT
11 6
T1IN V-
12 5 C615
R1oUT C2-
RK74HB1J102J
13 4 0.1u
R1IN C2+
14 3 C616
T1oUT C1-
15 2 0.1u
GND V+
C608
16 1
VCC C1+
0.1u
C609 IC606
ADM202EARUZ
1u
C611
0.1u
AM
TM-V71A/V71E
RECTIFICATION
D192
C221 R199
C222
470p 100 470p
REV MA3J742
R211
FWD
H:5.6V
M:2.5V
RECTIFICATION
L:1.5V
D191
MA3J742
R208
470k
R195
5.1V
27k ZENER
DIODE
R213
5.6k
Q186
DTC144EE
SW
R196 R203
27k 100k
R212
0
13.8V
DC SUPPLY
B
SW SW
PC/TNC I/F
C618 R620
1u 10
D609
DA221
R621
1k
R622
1k
R623
1k
R635 100
R636 100
IC606
RS-232C
DRIVE IC
X57-731 (A/6) 8/8
AN
1
ANT
0
2
3
4
B+
B-
J607
E56-0405-05
SQC 6
PR9 4
GND 2
PR1 5
PKD 1
PKS 3
GND 7
5
DATA
J606
E56-0411-05
NC 8
RxD 5
NC 7
CTS 2
GND 4
RTS 1
6
TxD 3
NC 6
GND 9
PC
7
83