Kenwood TK-8102 Service Manual page 49

K
TK-8102
IC502
POWER MODULE
RA30H4452M-31
T:12.9V
VOLTAGE
PROTECTION
D353,354,355
RF BPF TUNING
C386
C380 R375 C383 R377 *
470p 0 0.5p 0
R:2.4V
MIC
PC/TV
W/NO(EVOL2)
AFO(EVOL11)
8TC(CPU77)
8RC(CPU76)
SMP(CPU51)
AMPSW(CPU52)
C321
33p
L302
C319
330n
100p
FM DEMODULATION
IC301
TK14489V
1 20
OSC(B) RFIN
2
19
OSC(E) GND
7.9V 3 18
NC Hy_C
C315
4 17
MIX_O SCAN
0.1u
5 16
VCC SCAN
6 15
IF_IN
SQLIN
7
C311 0.1u 14 *
DEC1 FLAMPO
C312 0.1u 8 13
DEC2 FLAMPI
R314 2.2k 9 12
PH_S RSSI
R315 18k 10 11
AFO
QUCO
L301
L34-4554-05
RSSI(CPU92)
W/NI(EVOL1)
C258 R258
0.01u 2.7k
AUDIO
IC251
FILTER
NJM2902V
R259 1
12k 2
- + + -
3
7.9V
4
V+ GND
5
6
7
RX
3.3V
1/2Vcc
R264
120k
Q251
3.3V
2SC4617(S)
C264
0.033u
BUFFER
AMP
R265
2.7V
5.6k
SQIN(CPU93)
SBC(CPU82)
1/2Vcc
INT(CPU18)
RESET(CPU10)
46
X57-692 3/3
L
SCHEMATIC DIAGRAM
UHF
ANT SW
D602
R538 MA4PH633
0
T:0.99V
8T
D604,605
ANT SW
R512 R529
0 10
*
*
C390 R381
T-Hi:4.5V
Lo:2.6V
R380
TV
100k
DETECTION
D301
R:4.6V
MA742
R313
8TC
C309
100k
0.022u
R306
AMPSW(CPU52)
R:1.48V
SQL AMP
C306
Q301
1000p
2SC2412K
R:1.0V
AFV
8TC(CPU77)
C256
0.018u
8R
14
R256
13 5.6k
12
8RC(CPU76)
11
10
R251
9 C251
8C
8 47k
4.7u6.3
5C
C253
R253
1u 0
5M
R62
1k
D251 LIMITTER
MA742
R275
5C
15k
SBC(CPU82)
B
M
C609
1p
C602 L602
1000p 1.5T
D606
MA742
T:7.9V
APC CONTROLLER
IC501
TA75W01FU
T-Hi:9.0V
1 8
Lo:3.6V
VCC
R605
2 7
- +
3 47k
6 D608
+ -
1SS355
4
5
TEMPERATURE
VEE
COMPENSATION
R528
10k
AFO(EVOL11) C273 R277 R278
1u 68k 12k
3.1V
R279 Q254
SPM(CPU51)
DTC363EU
4.7k
AF MUTE
T:7.9V
Q35,36
Q35
DC SWITCH
KTA1664(Y)
8T
R36
Q36
1.5k KEC
KRC102S
R35
R37
47k
10k
R:7.9V
KEC
VOLTAGE
Q33,34 Q33 REGULATOR
2SA1745(6,7)
DC SWITCH
8C
8R
R34 IC31
Q34
KIA7808AF
R:7.9V
KRC102S
4.7k
R33 3
OUT
47k COM
2
KEC
5C
IC32
NJM78L05UA
R:4.9V
1 3
OUT IN
COM
VOLTAGE
2
REGULATOR
7.9V
OVER VOLTAGE
DETECTION
1
Q61 NC
KRC404RTK 2
VEE1
D61 R61 3
VEE2
02DZ18(X,Y) 470
OVER VOLTAGE
KEC DETECTION
INT(CPU18)
RESET(CPU10)
N
TX-RX UNIT (X57-6920-XX)
R800
C612
*
R92-1061-05
L603
1.5T
D606,607
APC VOLTAGE
D1-3
DETECT
SURGE ABSORPTION
5M
D607
MA742
POWER
R1
35
R2
17
R5
5C
22k
R3
36
83
R4
78
84
85
99
86
MIC
100
SB
5C
70
69
71
IC252
LA4600
AUDIO AMP
10 9 8 7 6 5 4 3 2 1
C274
0.22u
Q255
KRC102S
AF MUTE
KEC
D32
CURRENT C37
PROTECTION
470p
R:13.5V
T:13.0V
DC
SWITCH
R:13.5V
D32
Q31
1812L110PR
KTA1046(Y)
1,1A SB
R:12.8V
1
D31
DC SWITCH
IN
REVERSE
Q32
CONNECTION
2SK1824
PROTECTION
VOLTAGE REGULATOR
IC33
NJM78L05UA
4.9V
5M 1 3
OUT IN
COM
2
IC34
IC35
PST9140NR
PST9140NR
5 1 5
5.6V
NC
VCC VCC
2
VEE1
4 3 4
OUT VEE2 OUT
VOLTAGE VOLTAGE
DETECTOR DETECTOR
INT RESET
O
CN1
18
PTT
17
100
0 MIC 16
POWER
15
14
HOOK
13
1k
KMI2 12
CM 11
3.3k
KMI1 10
KMI3
9
KMO1 8
KMI4
7
KMO2 6
SB
5
5C 4
CE
3
CL
2
DI 1
J1
CN5
B
E