Tx-Rx Unit(X57-6940-10) - Kenwood TK-3180 Service Manual

A
TK-3180

TX-RX UNIT(X57-6940-10)

1
BATT
BATT
DET
2
CN400
E40-5823-05
5M
10
VOL
9
DGND
8
EN1
7
EN2
6
DGND
5
EN4
4
3
3 EN3
2 +B
SB1
1
VR/SW:R31-0617-05
CH_SW:S60-0415-05
4
CN500
E40-6413-05
1
5M
5
2
LCDRST
3
LCDCS
4
DGND
5
6
SB2
7
8
KI2
9
KI1
10
DATA
11
CLK
12
SPSTB
13
PTT
14
MIC
15
ME
6
16
AGND
17
LCDRS
18
19
20
7
52
X57-694 1/8
B
SCHEMATIC DIAGRAM
7.5V
F400
L400
REVERSE
PROTECTION
R:4.79V
T:5.15V
R400
0
R:4.98V
T:5.16V
EN1
EN2
EN4 5R
EN3
LG LR
LED
RED & GREEN
D400
B30-2278-05
R:0.1V R:6.37V
T:6.21V T:0.2V
LED SW /
GREEN or RED
Q400
UMG9N
C
SB2 SW
Q403
R:7.47V
2SA1955(A)
T:7.43V
R:6.78V
T:6.76V
VOLTAGE DETECTOR / RESET
R:0V
SBC SW
T:0.21V
Q402
2SK1830
VOLTAGE REGULATOR / 5V
IC406
TK11250CUCB
4
CoNT
VIN
GND
5A
5
VoUT NP
R:4.76V R:5.04V
T:0.20V T:5.20V
Q405
5T SW
2SJ347
R:5.00V IC404
Q406
T:4.41V TC75S51FE
5R SW
2SA1955(A)
R421 4
oUT
1k
R:0V
5
T:5.12V
VDD
Q404
DTC144EE
5T CONTROL
5R SW
5T
R:0V
T:5.14V
IC401
VOLTAGE REGULATOR / 5V
TK11250CUCB
3
4
VIN CoNT
2
GND
1
5
VoUT NP
5M PROTECTOR
5CNS
D405
RB521S-30
D404
BATT
R:7.49V
LEVEL
C414
T:7.45V
CONTROL
470p
R:3.66V
T:3.72V
5M CONTROL
IC400
IC400
VOLTAGE DETECTOR / INT
XC61CC5602NR
FLASH MEMORY
IC500
AT29C040A-90TI
R771
1k
DT
MIC
BATT_LEVEL
5CNS
5R
SBC
B
VOL
LEDR
LEDG
KI2
KI1
CLK
SPSTB
D
C433
470p
IC405
S-80942CNNBG9C
C447
4700p
VOLTAGE REGULATOR / 5V
IC403
5C
XC6204B502MR
3 1
5
VIN VoUT
R:4.97V
2 2
T:5.09V
VSS
1 3
4
CE NC
Q409
2SJ347
R:4.43V
R:0V
T:5.09V
SAVE SW
T:0.20V
3
IN-
5T CONTROL
2
D408
VSS
R:4.96V R:4.98V
1
T:0.20V T:0.20V
MA2S111
IN+
R427
47k
INT
POWER SW
R:4.81V
R407
T:4.91V
SSM3K15TE
680k
R:5.02V
VOLTAGE REGULATOR / 5V
T:5.19V
IC402
XC6204B502MR 5M
1 2SA1955(A)
5
VIN VoUT
2
VSS
3
R415
4
CE NC
15k
R:4.30V
T:4.47V
R:7.48V R:0V
T:7.44V T:0.2V
D406 Q407
R405 2SK1830
MA2S111
100k
R:4.47V
T:4.59V
5M SW
D403
D406
1SS301
R417
POWER SW
680k
CONTROL
R:4.99V
T:5.14V
C503
1u
E
5T
5C
5M
5RC
RESET
PSW
INT
S_DET
R:0V
T:0.2V
Q401
R:4.99V
T:5.16V
Q408
5M SW
L501
CPU_VCC
SAVE
CPU_DGND
PTT
5TC
LCDRS
DT
MIC
5M_CHARG
BATT_LEVEL
5CNS
5R
SBC
B
VOL
LEDR
LEDG
KI2
KI1
CLK
SPSTB