Voltage Diagrams - Icom IC-F7000 Service Manual

SECTION 12

VOLTAGE DIAGRAMS

12-1 RC-26 and HM-146
MIC UNIT (HM-146)
8V
Q1
DTA114EU
PTT
S1
JPM1990-2013R
LOCK
S2 UP
SSSS81560A
S3
SKHHLM
RX: 5.5V
DOWN
S4
SKHHLM
L5
0.82
R13 R14 R18
100 2.2k 10
RX: 6.28V RX: 5.5V
IC1
LC7366NM
1
VDD
2
XMIT
3
NC
4
C1
5
C2
6
C3
7
VSS
8
NC
9
OSC1
10
OSC0
X1
PRBC 3.58AR
1 2 3 TUNE
4 5 6 SCAN
7 8 9 MUTE
0 CALL
DISPLAY BOARD (RC-26)
5V
J1 J8701
8V 8V 8V
UDC UDC
D8221
DIM DIM
1SS355
PTT PTT MK
C8229
MICE MICE
Q8302
0.1
R8214
MIC MIC DTC114EU TONE
ERJ3GE-JPW
GND GND MBKS
TONE TONE
X8212
R8219
EFOP3584E5
MCR10-JPW
MP
D8204
1SS355
L8203 10 MCE
L8202 10 MC
when ten-key is p shed
3.9V
2.8V
0V
C17 R15 R17 R35
MC
1 5.6k 3.3k 100
MCE
C16
0.33
MC1 5V
KUB2823-011500
20
TONE
19
CD
18
NC
R8206
17
R1 47k
16
R2
15
R3
14
R4 R8207
13
47k
NC
12
MUTE
11
C4
MK
MP
S8201
EVEHE1F2524B
A
B
COM
VOL
J8802
J8702
J8801
FH13 FH13
FH13 FH13
AFIN AFIN
R8801 33
AFIN AFIN
AFIN AFIN
R8802 33
AFO AFO
AFO AFO
R8803 33
GND GND
GND GND
FH13
GND GND
REAR BOARD (RC-26)
12 - 1
UDC
5V 5V
D8250 R8254 R8253
1SS355 33k 6.8k
IC8205
LC73872M
IC8250
1 14 TC7W04F
INPUT VDD
2 13
NC NC
3 12 1 8
PD EST
4 11 DDSI 6 5 4
OSCO STD
5 10 DDAC 2 7
OSCI ACK
6 9 DDSD
NC SD
7 8 3 6
VSS LOAD
1 2 3 4 5
R8251
18k
10V 10V
8V 8V
C8283 R8283 R8284 R8285
10 1k 56k 470
R8276 C8286
R8281
2 1k 47
100k - 1
3
+
IC8280
IC8280 TS822ID
R8280 R8287
10k 10k TS522ID
8
V+
C8284
GND
2.2
4
Q8282
R8278 R8274 C8287
DTC114EU
12k 68k 4.7
Q8281
2SC4116
FE1 FE1
R8216 47k
R8203 47k
R8202 47k
L8201
10
5V
1
RES
2
XTAL
3
C8206 EXTAL
RX: 4.95V 4
12p
MD1
5
MD0
6
C8207 NMI
7
12p STBY
8
VCC2(VCL)
9
C8220 0.47 SCK0/P52
10 IC8201
RXD0/P51
HD64F2134AFA20
11
TXD0/P50
12
VSS
13
RX: 6.42V R8210 47k WAIT/P97
14
EXCL/P96
CS 15
IC8202
IOS/AS/P95
S-80942CNMC-G9C
WR 16
WR/P94
1 5 RD 17
OUT CD RD/P93
2 18
VDD IRQ0/P92
3 4 19
VSS NC IRQ1/P91
20
ADTRG/IRQ2/P90
R8211 47k
R8212 47k
R8213 47k
R8220 1k
R8221 1k
FH13
MI EP8293
5V FE1 EP8292
L8204 HF50ACC322513-B
AFIN
L8290 HF50ACC322513-B
FH13
LRXD EP8294
LTXD EP8295
RX: 12.90V
L8205 HF50ACC322513-B
IC8290
TA7805F R8290
10
FH13
O I
G
L8206
HF50ACC322513-B
5V
FZRX
RX: 9.11V
IC8301 FZTX
AN8009M
FZRS
10V
O I
G FZMD
R8706
82
10V
Q8701
DTC114EU
8V
RX: 7.83V
IC8310
L8286
TA78L08F
1000
8V 2 1
O I
G
3
8V
5V
RES
CS
RS
WR
RD
Q8312 Q8311
DTC114EU DTA114EU
DB0
DB1
DB2
DB3
DB4
DB5
DB6
DB7
FH13
60
P14/A4
59
P15/A5
58
P16/A6
57
P17/A17
56
VSS
55
P20/A8
54
P21/A9
53
P22/A10
52
P23/A11
51
P24/A12
50
P25/A13
49
P26/A14
48
P27/A15 LCD
47
VCC1
46
P47/PWX1
45 DDPD Q8300 Q8303
P46/PWX0
2SD1619 2SD1619
44 DDSI
P45/TMRI1
43 DDAC
P44/TMO1
42 DDSD
P43/TMCI1
41
P42/TMRI0/SCK2
FH13
/
I/O-CALL
Q8301
2SD1619
R8244
RX: 4.73V
ERJ3GE-JPW
R8242
R8241
6 470 MESUREMENT CONDITIONS
1M - 7
frequency:13.8 MHz
5
+ mode:J3E(USB)
ANT(RX):no input
(TX):no modulation
Digital tester
unit:V
FH13
range:20V
input impedance:10M
J8201
FMOD
FMODG
GND
FAF
FAFG
to IC-F7000
H13V MAIN (3) unit J2051
TXD
RXD
GND
J8202
FZ5V
FZRX
FZTX
FZRS
NC
FZMD
NC
GND
9V GND
GND
Explanatory notes
VOLTAGE LINE
TX LINE
RX LINE
J8205 J8920
9V 9V
5V 5V
GND GND
GND GND
CL1 CL1
RES RES LRES
CS CS LCS
RS RS LRS
WR WR LWR
RD RD LRD
GND GND
GND GND
DB0 DB0 LDB0
DB1 DB1 LDB1
DB2 DB2 LDB2
DB3 DB3 LDB3
DB4 DB4 LDB4
DB5 DB5 LDB5
DB6 DB6 LDB6
DB7 DB7 LDB7
L8920 10
L8921 10
IC8940
HD66421TBO
1 306
GND1 COM100
C8930 0.1 2 305
VLCD1 COM99
C8931 0.1 3 304
VCC1 COM98
C8932 1 4
V5O
C8933 1 5
V4O
C8934 1 6
V3O
C8935 1 7
RX: 1.97V V2O
C8936 1 8 257
V1O COM51
9 256
RX: 1.91V GREF SEG160
10 255
IREFM SEG159
11 254
R8941 R8946 IREFP SEG158
12
1.8M 1.8M
VLCD2
13
VLCD3
14
C8937 VCC2
15
0.1 GND2
16
GND3
17
VCC3
R8942
18
2.2M OSC1
19
OSC2
20
OSC
21
CO
22
DCON
23 LCD
CL1
24
FLM
25
M
26
M/S
LRES 27
RES
LCS 28
CS
LRS 29
TEN-KEY RS
LWR 30
WR
LRD 31
RD
32
VCC4
33
GND4
LDB0 34 99
DB0 SEG3
LDB1 35 98
DB1 SEG2
LDB2 36 97
DB2 SEG1
LDB3 37 96
DB3 COM50
LDB4 38 95
DB4 COM49
LDB5 39
DB5
LDB6 40
DB6
LDB7 41
DB7
42
VCC5
43
GND5
44 49
VCC6 COM3
45 48
VLCD4 COM2
46 47
GND6 COM1
CONNECT BOARD (RC-26)