© 2005-2 PRINTED IN JAPANB51-8718-00 (N) PDF
VHF FM TRANSCEIVER
TK-790H(B)
SUPPLEMENT
SERVICE MANUAL
Cabinet (Upper)(A01-2163-11)
Cabinet (Lower)(A01-2164-11)
This service manual applies to products with 60400001 orsubsequent serial numbers.
PARTS LIST ............................................................................................... 2
PC BOARD
FINAL UNIT (X45-3560-10) ................................................................... 4
SCHEMATIC DIAGRAM
FINAL UNIT (X45-3560-10) ................................................................... 8
CONTENTS
TK-790H(B)
2
PARTS LIST✽ New Parts. indicates safety critical components.Parts without Parts No. are not supplied.Les articles non mentionnes dans le Parts No. ne sont pas fournis.Teile ohne Parts No. werden nicht geliefert.
L : Scandinavia K : USA P : CanadaY : PX (Far East, Hawaii) T : England E : EuropeY : AAFES (Europe) X : Australia M : Other Areas
Ref. No. Address Parts No. Description Desti-nation
Newparts Ref. No. Address Parts No. Description Desti-
nationNewparts
C1-6 CK73FB1H102K CHIP C 1000PF KC8 CK73FB1E104K CHIP C 0.10UF KC11 CK73FB1H102K CHIP C 1000PF KC13 CM73F2H180J CHIP C 18PF JC15 CK73FB1H102K CHIP C 1000PF K
C16 CM73F2H470J CHIP C 47PF JC18 C92-0726-05 CHIP-ELE 47UF 25WVC19 CM73F2H151J CHIP C 150PF JC21 CM73F2H181J CHIP C 180PF JC22,23 CM73F2H681J CHIP C 680PF J
C24,25 CM73F2H201J CHIP C 200PF JC28-31 CM73F2H271J CHIP C 270PF JC32-35 CM73F2H221J CHIP C 220PF JC37 CK73FB1H102K CHIP C 1000PF KC38 CK73FB1H103K CHIP C 0.010UF K
C39 CK73FB1E104K CHIP C 0.10UF KC40,41 CM73F2H681J CHIP C 680PF JC42 CK73FB1H102K CHIP C 1000PF KC43 CM73F2H620J CHIP C 62PF JC44 C90-5299-05 ELECTRO 470UF 25WV
C45 CK73FB1H103K CHIP C 0.010UF KC46 CM73F2H620J CHIP C 62PF JC47 CK73FB1H102K CHIP C 1000PF KC48 CK73FB1E104K CHIP C 0.10UF KC49 CM73F2H470J CHIP C 47PF J
C50 C90-5299-05 ELECTRO 470UF 25WVC51 CM73F2H180J CHIP C 18PF JC52 CK73FB1H102K CHIP C 1000PF KC53 CC73FCH1H180J CHIP C 18PF JC55 CK73FB1H102K CHIP C 1000PF K
C58 CK73FB1H102K CHIP C 1000PF KC60 CC73FCH1H020C CHIP C 2.0PF CC61 CK73FB1H102K CHIP C 1000PF KC63 CK73FB1H102K CHIP C 1000PF KC64 CM73F2H100D CHIP C 10PF D
C65 C92-0729-05 CHIP-ELE 330UF 25WVC66 CM73F2H360F CHIP C 36PF FC67 C92-0729-05 CHIP-ELE 330UF 25WVC68,69 CK73FB1H102K CHIP C 1000PF KC70 CM73F2H360F CHIP C 36PF F
C71 CM73F2H080D CHIP C 8.0PF DC72 CM73F2H180J CHIP C 18PF JC73,74 CK73FB1H102K CHIP C 1000PF KC83 C92-0606-05 CHIP-TAN 4.7UF 10WVC84 CK73GB1C104K CHIP C 0.10UF K
C85 CK73GB1E103K CHIP C 0.010UF KC86 CK73GB1H471K CHIP C 470PF KC87 CK73GB1H102K CHIP C 1000PF KC88 CK73GB1C104K CHIP C 0.10UF KC89 C92-0003-05 CHIP-TAN 0.47UF 25WV
C90 CK73GB1H102K CHIP C 1000PF KC91 C90-4016-05 ELECTRO 47UF 16WVC92 CK73FB1H102K CHIP C 1000PF KC94 CK73GB1H102K CHIP C 1000PF K
C95 CK73GB1E103K CHIP C 0.010UF KC96 CK73GB1H102K CHIP C 1000PF KC98 CK73GB1H102K CHIP C 1000PF K
CN1,2 E04-0154-05 PIN SOCKETCN3,4 E23-1116-05 RELAY TERMINALW1,2 E37-0783-05 PROCESSED LEAD WIREW4 E37-0706-05 LEAD WIRE WITH CONNECTORW5 E37-0701-05 LEAD WIRE WITH CONNECTOR
L1 L34-1039-05 AIR-CORE COILL2 L39-0421-04 COILL3,4 L34-1231-15 AIR-CORE COILL5 L34-1246-15 AIR-CORE COILL6 L34-1247-05 AIR-CORE COIL
L7,8 L34-1232-15 AIR-CORE COILL9 L34-1231-15 AIR-CORE COILL10 L34-1088-05 AIR-CORE COILL11 L40-1885-34 SMALL FIXED INDUCTOR (180NH)
R1 RK73FB2A330J CHIP R 33 J 1/10WR2 RK73FB2A473J CHIP R 47K J 1/10WR4 RK73FB2A103J CHIP R 10K J 1/10WR5 RK73FB2A471J CHIP R 470 J 1/10WR6 RK73FB2A122J CHIP R 1.2K J 1/10W
R7 RK73FB2A472J CHIP R 4.7K J 1/10WR8 RD14DB3A3R3J SMALL-RD 3.3 J 1WR9,10 RS14DB3D2R2J FL-PROOF RS 2.2 J 2WR13 RD14DB3A3R3J SMALL-RD 3.3 J 1WR16,17 R92-1221-05 CHIP R 82 J 1/4W
R18 RK73FB2A122J CHIP R 1.2K J 1/10WR19 RK73FB2A103J CHIP R 10K J 1/10WR20 RK73FB2A271J CHIP R 270 J 1/10WR21 RK73FB2A330J CHIP R 33 J 1/10WR22 RK73FB2A271J CHIP R 270 J 1/10W
R24 RK73FB2A561J CHIP R 560 J 1/10WR25 R92-1061-05 JUMPER REST 0 OHMR30 RK73GB1J102J CHIP R 1.0K J 1/16WR32 RK73GB1J102J CHIP R 1.0K J 1/16WR33 RK73GB1J103J CHIP R 10K J 1/16W
R34 RK73GB1J102J CHIP R 1.0K J 1/16WR35 RK73GB1J182J CHIP R 1.8K J 1/16WR36 RK73GB1J104J CHIP R 100K J 1/16WR37,38 RK73GB1J103J CHIP R 10K J 1/16WR39 RK73GB1J273J CHIP R 27K J 1/16W
R40 RK73GB1J183J CHIP R 18K J 1/16WR41 RK73GB1J153J CHIP R 15K J 1/16WR42 RK73GB1J103J CHIP R 10K J 1/16WR43 RK73GB1J273J CHIP R 27K J 1/16WR44 R92-1252-05 CHIP R 0 OHM J 1/16W
R45 RK73GB1J103J CHIP R 10K J 1/16WR46 RK73GB1J272J CHIP R 2.7K J 1/16WR47 RK73GB1J103J CHIP R 10K J 1/16WR48 RK73GB1J272J CHIP R 2.7K J 1/16WR49 RK73GB1J154J CHIP R 150K J 1/16W
VR1 R12-6429-05 TRIMMING POT. (100K)
K1 S51-1437-05 RELAY
FINAL UNIT (X45-3560-10)
FINAL UNIT (X45-3560-10)
TK-790H(B)
3
PARTS LIST
D1,2 HSM88AS DIODED4 22ZR-10D SURGE ABSORBERD5 1SS193 DIODED6 02CZ10(X,Y) ZENER DIODED7 SG-5L(R) DIODE
D10 02DZ5.6(X,Y) ZENER DIODED11,12 1SS355 DIODEIC1 RA30H1317M-31 MOS-ICIC2,3 OP291GS BI-POLAR ICQ1,2 2SC2712(Y) TRANSISTOR
Q6,7 2SC2782 TRANSISTORQ8 FMC2 DIGITAL TRANSISTORQ9 2SD1624(S) TRANSISTORQ20 2SC4116(Y) TRANSISTORTH1 PTH9M04BC471TS THERMISTOR
- 212-0702-05 INSULATING TUBE
Ref. No. Address Parts No. Description Desti-nation
Newparts Ref. No. Address Parts No. Description Desti-
nationNewparts
FINAL UNIT (X45-3560-10)
4
JIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C44
+
C50
C42
C48
C45
L3
R13R8
C33
C32
C28
C30
C31
C29
L4
C35
C34
C3
C8 C1
234
C18
IC1
C15C13
+
TH1
CN4GND
R9
C22
C23
R10
Q6B C
E E
E E
Q7B C
E E
E EC25
C24
C21L2
C74
W4
E1 3
+B +B
C67 +
C65 +
C16
C47 L1
C19
C52
D7
C73D
4
CN3+B
W2
W2
W1
W1
J72-0568-12
C37
C38
C39
+
TK-790H(B) PC BOARDFINAL UNIT (X45-3560-10) Component side view (J72-0568-12)
5
J K L M N O P Q R S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C84
D10
C83
R22
R20
C63
R19
R18
D6
C44
C89
C91
DB
1 5
E 8R 8T PC
C85
C86
R34 R35
R32
C87 C90
C94
C98
R36
R39
R43
R45
R46
R38
C2
IC2
VR
1
AP
C
Q2
1 458
R30+
+
+
D11
R33
Q20 C88
C1 C4 C6
W5 R4
R6
R5
R7
C92
C5
R2
Q1R49
C95
R44
D12 R37 C96
R47 R48
R42R41R40
IC3
1
45
8
CN2RA
C64
L7
C66
L8
C70
L9
L71
L10
C72
R25
C51
L6 C53
D1
R16 R24
C58
C49
C60
D2
C41
C40
C55R17
L11
C61D5
C68
K1
CN1DO
R21
R1
Q81
34
5
C69
Q9
EC
B
L5C43
C46
+
C50
C42
R13
C3
C8 C11
12
C37
+
FINAL UNIT (X45-3560-10) Component side view (J72-0568-12)
PC BOARD TK-790H(B)
Component side
Foil side
Layer 1Layer 2
Ref. No. Address
IC1 13H
IC2 11O
IC3 10P
Q1 11Q
Q2 12P
Q6 5H
Q7 8H
Q8 11L
Q9 9L
Q20 11N
D1 4O
D2 7M
D4 4B
D5 10N
D6 10K
D7 3B
D10 12M
D11 11N
D12 11O
J K L M N O P Q R SIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
C84
D10
C83
R22
R20
C63
R19
R18
D6
C44
C89
C91
DB
1 5
E 8R 8T PC
C85
C86
R34 R35
R32
C87 C90
C94
C98
R36
R39
R43
R45
R46
R38
C2
IC2
VR
1
AP
C
Q2
1 458
R30+
+
+
D11
R33
Q20 C88
C1 C4 C6
W5 R4
R6
R5
R7
C92
C5
R2
Q1R49
C95
R44
D12 R37 C96
R47 R48
R42R41R40
IC3
1
45
8
CN2RA
C64
L7
C66
L8
C70
L9
L71
L10
C72
R25
C51
L6 C53
D1
R16 R24
C58
C49
C60
D2
C41
C40
C55R17
L11
C61D5
C68
K1
CN1DO
R21
R1
Q81
34
5
C69
Q9
EC
B
L5C43
C46
+
C50
C42
C48
C45
L3
R13R8
C33
C32
C28
C30
C31
C29
L4
C35
C34
C3
C8 C11
1234
C18
IC1
C15C13
+
TH1
CN4GND
R9
C22
C23
R10
Q6B C
E E
E E
Q7B C
E E
E EC25
C24
C21L2
C74
W4
E1 3
+B +B
C67 +
C65 +
C16
C47 L1
C19
C52
D7
C73D
4
CN3+B
W2
W2
W1
W1
J72-0568-12
C37
C38
C39
+
TK-790H(B) PC BOARDFINAL UNIT (X45-3560-10) Component side view (J72-0568-12) FINAL UNIT (X45-3560-10) Component side view (J72-0568-12)
PC BOARD TK-790H(B)
Component side
Foil side
Layer 1Layer 2
Ref. No. Address
IC1 13H
IC2 11O
IC3 10P
Q1 11Q
Q2 12P
Q6 5H
Q7 8H
Q8 11L
Q9 9L
Q20 11N
D1 4O
D2 7M
D4 4B
D5 10N
D6 10K
D7 3B
D10 12M
D11 11N
D12 11O
6
JIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TK-790H(B) PC BOARDFINAL UNIT (X45-3560-10) Foil side view (J72-0568-12)
J72-0568-12
7
J K L M N O P Q R S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
FINAL UNIT (X45-3560-10) Foil side view (J72-0568-12)
PC BOARD TK-790H(B)
Component side
Foil side
Layer 1Layer 2
J K L M N O P Q R SIHGFEDCBA
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1
2
3
4
5
6
7
8
9
10
11
12
13
14
TK-790H(B) PC BOARDFINAL UNIT (X45-3560-10) Foil side view (J72-0568-12) FINAL UNIT (X45-3560-10) Foil side view (J72-0568-12)
PC BOARD TK-790H(B)
Component side
Foil side
Layer 1Layer 2
J72-0568-12
TK-790H(B) SCHEMATIC DIAGRAM
8
7
6
5
4
3
2
1
A B C D E
-t
C22
680p
R20
270
C28
270p
R4
10k
C18
47u2
5
L4
R1
33
C5
0.00
1u
C13
18p
R49
150k
C29
270p
R5
470
C8
0.1u
R6
1.2k
L3
C30
270p
C34
220p
C23
C35
220p
C31
270p
C94
1000
p
R34 1k
W5
12345
R22 270
R30
1k
C40
680p
1
2
3
4 5
6
7
8
1
RF
_IN
2 3 4
RF
_oU
T
C41
680p
R35
1.8k
CN1
C21
VR1100k
R21
33
C15
0.00
1u
C3
0.00
1u
R32
1k
C32
220p
R2
47k
R36
100k
C11
0.00
1u
C33
220p
R7
4.7k
L1 L2
C16
47p
C19
C24
200p
R8
3.3
R10 2.2
C25
200p
R9
2.2
2SC2782Q6
2SC2782Q7
R13
3.3
C1
0.00
1u
C6
0.00
1u
C2
0.00
1u
C4
0.00
1u
TH
1P
TH
9M04
BC
471T
S
DO
+20dBm
8R
CN201
CN203
1
5
B
FINAL UNIT (X45-3560-10) : TK-790H(B)K
8T
GAT
E B
IAS
DR
AIN
BIA
S
IC1RA30H1317M-31
TX DRIVE AMP
Q6,7FINAL AMP
2SC4116(Y)Q20
RIPPLE FILTER
D11
1SS355
CURRENTSTEERING
IC2OP291GS
DC AMP
C89
0.47
u25
2SC2712(Y)Q2
DC SW
2SC2712(Y)Q1
DC SW
PROTECT OF VOLTAGE
D10
E
PC
8T
8R
DB
DO
TX
-RX
UN
ITX
57-5
610-
12(A
/3)
680p
180p
150p
C85
0.01
u
C86
470p
C84
0.1u
D10
02D
Z5.
6(X
,Y)
C83
4.7u
10
TX
-RX
UN
ITX
57-5
610-
12(A
/3)
C88
0.1u
C87
1000
p
R33
10k
C92
1000
p
C91
47u1
6
C90
1000
p
oUTA +V
-INA oUTB
+INA -INB
-V +INB
0V(2.7V)
0V(2.0V)
0V(7.94V)
X45-356 1/2
SCHEMATIC DIAGRAM TK-790H(B)
9
7
6
5
4
3
2
1
JIHGF
Note : The components marked with a dot (•) are parts of layer 1.
C95
0.01
u
C55
0.00
1u
W1
K1S51-1437-05
C66
36p
C96
1000
p
C50
470u
25
R38
10k
C72
18p
C68
0.00
1u
R44
0
C63
0.00
1u
CN3
D12
1SS355
R43
27k
C74
0.00
1u
C69
0.00
1u
D2HSM88AS
C52
0.00
1u
R48
2.7k
C58
0.00
1u
C37
0.00
1u
C39
0.1u
R45
10k
L9
R37
10k
C42
0.00
1u
R46
2.7k
C44
470u
25
R18
1.2k
C64
10p
R25
0
CN2
R19
10k
L7
C98
1000p
D1HSM88AS
R39
27k
L8
R41
15k
R47
10k
C38
0.01
u
Q8FMC2
C70
36p
W4
1
2
3
L10
CN4
C51
18p
C73
0.00
1u
C47
0.00
1u
C45
0.01
u
C48
0.1u
C43
62p
W2
R24
560
1oU
TA2
-IN
A3
+IN
A4
-V5678
R40
18k
C46
62p
L5 L6
C49
47p
C53
18p
R17 82
L11
180n
C60 2pR16 82
C61
0.00
1u
C71
8p
CN501C
ON
TR
OL
UN
ITX
57-5
610-
12(B
/3)
COMBINER
B
1
3
+B
E
+B
REFLECTEDWAVERECTIFICATION
+B
FORWARDWAVERECTIFICATION
E
ANT
CN104RA
8R
VOLTAGEREFERENCE
DC 13.4V
8T
+IN
B
-IN
B
oUT
B
+V
IC3OP291GS
DC AMP
D4SURGEABSORPTION
D7
PROTECT OF REVERSECONNECTION
D602CZ10(X,Y)
SURGE ABSORPTION
TX/RX SW 2SD1624(S)Q9
TX/RX SW
D51SS193
D7
SG
-5L(
R)
C67
330u
25
C65
330u
25
D4
22Z
R-1
0D
R42
10k
TX
-RX
UN
ITX
57-5
610-
12(A
/3)
RA
13.4V(11.9V)
9.3V(0V)
0V(1.3V)
0V(0.2V)
7.92V(0V)
+50.41dBm
FINAL UNIT (X45-3560-10)
X45-356 2/2
-t
C22
680p
C95
0.01
u
C55
0.00
1u
R20
270
W1C
28
270p
K1S51-1437-05
C66
36p
C96
1000
p
R4
10k
C50
470u
25
C18
47u2
5
R38
10k
C72
18p
L4
C68
0.00
1u
R44
0
C63
0.00
1u
CN3
R1
33
C5
0.00
1u
C13
18p
D12
1SS355
R49
150k
C29
270p
R43
27k
C74
0.00
1u
C69
0.00
1u
R5
470
C8
0.1u
D2HSM88AS
C52
0.00
1u
R48
2.7k
C58
0.00
1u
C37
0.00
1u
R6
1.2k
L3
C30
270p
C34
220p
C23
C39
0.1u
R45
10k
L9
R37
10k
C42
0.00
1u
R46
2.7k
C35
220p
C44
470u
25
C31
270p
C94
1000
p
R34 1k
W5
12345
R18
1.2k
C64
10p
R25
0
CN2
R19
10k
L7R
22 270
C98
1000p
R30
1kC
40
680p
D1HSM88AS
R39
27k
1
2
3
4 5
6
7
8
1
RF
_IN
2 3 4
RF
_oU
T
L8
C41
680p
R35
1.8k
R41
15k
R47
10k
C38
0.01
u
Q8FMC2
C70
36p
CN1
W4
1
2
3
C21
VR1100k
L10
R21
33
C15
0.00
1u
CN4
C51
18p
C3
0.00
1u
R32
1k
C32
220p
C73
0.00
1u
R2
47k
C47
0.00
1u
C45
0.01
u
C48
0.1u
R36
100k
C43
62p
C11
0.00
1u
C33
220p
W2
R24
560
R7
4.7k
L1 L2C
16
47p
C19
C24
200p
R8
3.3
R10 2.2
C25
200p
R9
2.2
2SC2782Q6
2SC2782Q7
R13
3.3
C1
0.00
1u
C6
0.00
1u
C2
0.00
1u
C4
0.00
1u
TH
1P
TH
9M04
BC
471T
S
1oU
TA2
-IN
A3
+IN
A4
-V5678
R40
18k
C46
62p
L5 L6
C49
47p
C53
18p
R17 82
L11
180n
C60 2pR16 82
C61
0.00
1u
C71
8p
DO
+20dBm
8R
CN501
CO
NT
RO
L U
NIT
X57
-561
0-12
(B/3
)
COMBINER
B
1
3
+B
E
+B
REFLECTEDWAVERECTIFICATION
+B
CN201
FORWARDWAVERECTIFICATION
E
ANT
CN104
CN203
RA
1
8R
5 VOLTAGEREFERENCE
B
DC 13.4V
FINAL UNIT (X45-3560-10) : TK-790H(B)K
8T8T
GAT
E B
IAS
DR
AIN
BIA
S
IC1RA30H1317M-31
TX DRIVE AMP
Q6,7FINAL AMP
2SC4116(Y)Q20
RIPPLE FILTER
D11
1SS355
CURRENTSTEERING
IC2OP291GS
DC AMP
C89
0.47
u25
2SC2712(Y)Q2
DC SW
2SC2712(Y)Q1
DC SW
PROTECT OF VOLTAGE
D10
E
PC
8T
8R
DB
+IN
B
-IN
B
oUT
B
+V
IC3OP291GS
DC AMP
D4SURGEABSORPTION
D7
PROTECT OF REVERSECONNECTION
D602CZ10(X,Y)
SURGE ABSORPTION
TX/RX SW 2SD1624(S)Q9
TX/RX SW
D51SS193
D7
SG
-5L(
R)
C67
330u
25
C65
330u
25
D4
22Z
R-1
0D
DO
TX
-RX
UN
ITX
57-5
610-
12(A
/3)
680p
180p
150p
C85
0.01
u
C86
470p
C84
0.1u
D10
02D
Z5.
6(X
,Y)
C83
4.7u
10
TX
-RX
UN
ITX
57-5
610-
12(A
/3)
C88
0.1u
C87
1000
p
R33
10k
C92
1000
p
C91
47u1
6
C90
1000
p
oUTA +V
-INA oUTB
+INA -INB
-V +INB
R42
10k
TX
-RX
UN
ITX
57-5
610-
12(A
/3)
RA
13.4V(11.9V)
9.3V(0V)
0V(2.7V)
0V(2.0V)
0V(1.3V)
0V(0.2V)
0V(7.94V)
7.92V(0V)
+50.41dBm
TK-790H(B)
2967-3, Ishikawa-machi, Hachioji-shi, Tokyo, 192-8525 Japan
P.O. BOX 22745, 2201 East Dominguez Street, Long Beach, CA 90801-5745, U.S.A.
6070 Kestrel Road, Mississauga, Ontario, Canada L5T 1S8
Rembrücker Str. 15, 63150 Heusenstamm, Germany
Leuvensesteenweg 248 J, 1800 Vilvoorde, Belgium
13, Boulevard Ney, 75018 Paris, France
KENWOOD House, Dwight Road, Watford, Herts., WD18 9EB United Kingdom
Amsterdamseweg 37, 1422 AC Uithoorn, The Netherlands
Via G. Sirtori, 7/9 20129 Milano, Italy
Bolivia, 239-08020 Barcelona, Spain
(A.C.N. 001 499 074)16 Giffnock Avenue, Centrecourt Estate, North Ryde, N.S.W. 2113 Australia
Unit 3712-3724, Level 37, Tower one Metroplaza, 223 Hing Fong Road, Kwai Fong, N.T., Hong Kong
1 Ang Mo Kio Street 63, Singapore 569110