Kenwood TK-880 Service Manual page 22

P
*
POWER MODULE
1 2
R204
100
L219
C254 R205 R402
10n
22p 120 0
R:0V
T:4.80V
R:0V(K,HK) APC
T:3.75V(K),3.83V(HK)
Q404
2SC4116(Y)F
* R452 R453
1k
D407
PROTECTION
R:0V(K,HK)
D408
T:3.20V(K),4.94V(HK)
REVERSE CURRENT
PROTECTION
8T
8C
5.08V
RSSI
0.59V
R111
8R
4.7k
R:7.95V
T:0V
R107 C153 C154
47k 0.01u 0.01u
R:0.72V
T:0V
Q15
2SC2059K(P)
IF AMP
C96
R100 R104 C92
18p
330 0 0.01u
DM
DEO
W/N
5C
9C
SB
IGN
REVERSE CURRENT PROTECTION
D20
4.6V
1SS355
D21
02DZ5.6F(X,Y)
PROTECTION
TOF SW
Q25
DTA114EE
TOF SW
Q22
DTC114EE
INVERTOR
Q26
DTA114EE
IGN
TOF
R134 47k
PSW
PA
Q
SCHEMATIC DIAGRAM
IC400
3 4
D402
*
D209
MA4PH633
C267
1000p
D209-211,402
ANT SW
R:13.6V(K,HK)
T:12.95V(K),12.1V(HK)
C102 27p
FM IF
DET,IC
IC11
TA31136FNG
TP3
DET MUTE
R114 Q32
C100
3.9k 2SK1824-A
10u10
Q16
DTC144EE
AF SW
5.06V 13.57V
R152
R128 0
22k
D26,31
REVERSE
13.32V CURRENT
PROTECTION D26 R143
1SS355 1k
POWER ON:0V
POWER OFF:13.37V
1 14
R144
Q1 VDD
22k
2 13
Q1 Q2
3 12
CLK1 Q2
4 11
R1 CLK2
5 10
D1 R2
6 9
S1 D2
7 8
VSS S2
IC15
TC4013BF(N)
13.20V
FLIP FLOP
13.33V
X57-6450-XX(A/2)
-10 K
-13 HK
R
TK-880/880H
L222
1.5T
POWER DET
D27
HSM88AS
R:0V
T:17.24V
R:0V
T:14.37V
R:0V
T:1.52V
R415
10k
1.01V
R:0V
T:2.31V
CF1
L72-0372-05 or
L72-0998-05
W/N SW
D22 CF2
DAN235E
L72-0376-05 or
C108
L72-0986-05
0.1u
5V AVR
IC12
TA78L05FF
5.13V
1 OUT 3
IN
COM
2
1
9.59V
R:12.82V
C142 470p
T:12.34V 13.57V
SB SW
R151
0
Q27
2SA1641(S,T)
13.02V 12.82V
R150 0
Q28
DTC114EE
Q30
DTA114EE
R153
0
0V
Q28,30,31
Q31
SB SW CONTROL
DTC114EE
IC400 D402 R135 R147
RA30H4552M123 NO 150 1/2W 8.2k
RA45H4552M131 MA4PH633 120 1/2W 22k
S
TX-RX UNIT (X57-6450-XX) (A/2)
L224
1.5T
R420 R421
0 0
POWER DET
R:0V
D30
T:14.51V
HSM88AS
IC401,Q401
SHORT
PROTECTION
Q401
DTC114EE
0.01V
R418 47k
R:0V
1 8
T:2.32V
AOUT V+
2 7
A-IN BOUT
3 6
A+IN B-IN
4 5
GND B+IN
IC401
NJM2904V
R:0.01V
T:7.95V
5.08V
W/N SW
Q23
DTA114EE
W/N SW
D23
DAN235E
Q24
DTC144EE
W/N SW
IC14
8V AVR
8.06V
TA7808S
2 1
OUT IN
GND
9V AVR
3
IC13
AN8009M
R138 R142
10 10
3
OUT IN
COM 1/2W
2
13.54V
REVERSE VOLTAGE PROTECTION
R106
0
R109
0
R451 R452 C257 C265 C269 C272 C273
NO 0 22u 2p 8p 8p 3p
5.6k 1.2k NO NO 6p 6p 1p
X57-645 (A/2) 4/4
T
1
ANT
2
3
4
5
DC 13.6V
CN5
PA
1
SPO
SPI
3
6
J1
EXT.SP
CN6
SP
E
C418 7
NO
1p
19