Icom IC-7700 Service Manual page 119
Hf/50mhz transceiver
Hide thumbs
Also See for IC-7700:
- Instruction manual (232 pages) ,
- Service manual (135 pages) ,
- Installation and connections (11 pages)
Table of Contents
Advertisement
DC-DC UNIT
LG_PWR
1
2
-12V
3
+15V
4
+15V
5
6
+8V
7
+3R3V
8
9
+3R3V
10
J1
B10B-PH-SM4-TB
1
2
VDD1R5
3
4
VDD3R3
5
VDD5
6
PWRS
7
C15V
8
9
J2
B 9B-PH-SM4-TB
GND
GND
13
+3R3V
+3R3V
12
+3R3V
+3R3V
11
GND
GND
10
+5V
+5V
9
+8V
+8V
8
+15V
+15V
7
+15V
+15V
6
-12V
-12V
5
GND
GND
4
GND
GND
3
+5V
+5V
2
GND
GND
1
J3
B13B-PH-SM4-TB
C206
100P
+15V
C202
R204
1
+15V
2
GND
0.001
27K
3
GND
R205
15K
4
C203
J8
0.1
B 4B-PH-SM4-TB
C303
0.1
C302
R304
0.001
C306
27K
100P
GND
GND
7
C15V
C15V
6
+8V
+8V
5
GND
GND
4
+15V
+15V
3
+3R3V
+3R3V
2
GND
GND
1
J5
B 7B-PH-SM4-TB
EP302
MPZ2012S331A
J6
B 6B-PH-SM4-TB
6
+8V
5
+3R3V
4
+5V
3
-12V
2
1
J7
B 8B-PH-SM4-TB
8
7
+15V
L803
6
+8V
5
+3R3V
4
33U
+5V
3
-12V
2
1
+15V
+8V
C15V
VDD5
EP201
+3R3V
MPZ2012S331A
MP201
2590
IC201
L201
1
25
PGND1
SW1L
2
24
33U
COMP1
SW 1
3
23
FB1
SW 1
C204
4
22
RT
BOOT1
5
21
0.1
NC
PVCC
6
20
SS1/SD
PVCC
7
VCC
8
19
SS2/SD
PVCC
L211
EP211
9
18
C304
NC
PVCC
10
17
FB2
BOOT2
33U
MPZ2012S331A
11
16
COMP2
SW 2
0.1
12
15
GND
SW 2
13
14
PGND2
SW2L
BD9302FP
L301
33U
L302
EP301
10U
MPZ2012S331A
MP801
2590
IC801
1
8
NC
OUTPUT
D803
2
7
NC
VIN
3
6
NC
GND
R802
C802
RB081L
4
5
FB
ON/OFF
0.1
47K
LM2594M
-12V
D802
MBRD835LT4G
10 - 29
+8V
C15V
RL142
H8V
AW3023
L141
10U
Q141
DTD113ZK
EP402
EP401
MPZ2012S331A
MPZ2012S331A
MP401
2590
C406
100P
IC401
L401
R404
1
25
PGND1
SW1L
C402
2
24
COMP 1
SW 1
33U
0.001
27K
3
23
FB1
SW 1
C404
R405
4
22
RT
BOOT1
15K
5
21
0.1
NC
PVCC
6
20
C403
SS1/SD
PVCC
0.1
7
VCC
8
19
C503
0.1
SS2/SD
PVCC
L411
9
18
NC
PVCC
C502
R504
10
17
C504
FB2
BOOT2
33U
0.001
11
16
0.1
COMP 2
SW 2
12
15
C506
27K
GND
SW 2
100P
13
14
PGND2
SW2L
BD9302FP
L501
33U
EP502
VDD1R5
EP501
MPZ2012S331A
MPZ2012S331A
EP602
EP601
MPZ2012S331A
MPZ2012S331A
MP601
2590
C606
100P
IC601
L601
1
25
C602
R604
PGND1
SW1L
2
24
COMP 1
SW 1
33U
0.001
27K
3
23
FB1
SW 1
C604
R605
4
22
RT
BOOT1
5
21
15K
0.1
NC
PVCC
6
20
C603
SS1/SD
PVCC
0.1
7
R706
VCC
8
19
SS2/SD
PVCC
L611
9
18
0
NC
PVCC
10
17
33U
FB2
BOOT2
11
16
COMP 2
SW 2
12
15
GND
SW 2
13
14
PGND2
SW2L
BD9302FP
1
LG_PWR
2
C15V
3
C15V
4
5
6
7
8
H8V
9
H8V
10
W1
OPC-1803
H8V
Hide quick links:
Advertisement
Table of Contents
