Voltage Diagram; Front Unit - Icom IC-F2610 Service Manual

SECTION 11 VOLTAGE DIAGRAMS

11-1 FRONT UNIT

DS1
TSC0712A-03
SEG54 103
SEG54
SEG55 104
SEG55
SEG56 105
SEG56
SEG57 106
SEG57
SEG58 107
SEG58
SEG59 108
SEG59
SEG60 109
SEG60
SEG61 110
SEG61
SEG62 111
SEG62
SEG63 112
SEG63
113
SEG64
SEG64
114
SEG65
SEG65
115
SEG66
SEG66
SEG67 116
SEG67 SED1526F0A
SEG68 117
SEG68
SEG69 118
SEG69
SEG70 119
SEG70
SEG71 120
SEG71
SEG72 121
SEG72
SEG73 122
SEG73
SEG74 123
SEG74
SEG75 124
SEG75
SEG76 125
SEG76
SEG77 126
SEG77
SEG78 127
SEG78
SEG79 128
SEG79
C1
+5V 0.1
C2
+5V 0.1
C3
+5V 0.1
C4
+5V 0.1
C5
+5V 0.1
C7
R1 R2 R3 1
C6 5.04V
1.2M RV-158 1M
1
+5V +5V
C8 C9
0.1 0.001
-2.0V
C.P
LIGHT ON (DIM OFF) 7.64V LIGHT ON (DIM OFF) 7.75V
LIGHT ON (DIM ON) 5.99V LIGHT ON (DIM ON)
LIGHT OFF 0V LIGHT OFF
+8V
R29
270
R27
150
DS4 DS7
FY1112H CL-170Y
DS3 DS6
FY1112H FY1112H
DS2 DS5
FY1112H FY1112H
+8V
3.56Vp-p
f = 9.83 MHz
64 SEG15
SEG15
63 SEG14
SEG14
62 SEG13
4.46Vp-p
SEG13
61 SEG12
SEG12
60 SEG11
SEG11
59 SEG10
SEG10 C14 X1
58 SEG9
SEG9 15p CR-567
SEG8
57
SEG8
SEG7
56
SEG7
55 SEG6
SEG6 C13
54 SEG5
SEG5 15p
53
SEG4
SEG4
52
SEG3
IC1
SEG3
51 SEG2
SEG2
50 SEG1
SEG1
49 SEG0
SEG0
48 COM16
COMS
47 COM15
COM15
46 COM14
COM14
45 COM13
COM13
44 COM12
COM12
43 COM11
COM11
42 COM10
COM10
41 COM9
COM9
40 COM8
COM8
39 COM7
COM7
+5V
0V
5.01V 5.00V
R7
10k
3 2 1
R4 C10
R8
1k 0.22 220k
Q1
2SC4081
R9
R5 R6 R10
220k C11
470k
100k 100k
D1 0.01
4 5 MA111
IC3
S-80842CLMC-B63-T2
6.20V LIGHT ON 0V
0V
7.98V LIGHT OFF 7.98V
+5V
R43 R42
+8V
100k 100k
P0
C34
C35
47p 47p
S17
Q6
Q8
DTA143ZU
DTA143ZU
DIM ON 7.90V
R34
DIM OFF 0V
220
Q7 Q9
DTA143ZU DTA143ZU
R30 R31 R32
R28
150 1k 1k 390
DIM ON
DIM OFF 4.97V
Q10
DTC114EU
DS10 DS13 DS16
LIGHT ON
CL-170Y CL-170Y CL-170Y
LIGHT OFF
W3 W4
DS15
CL-170Y
Q11
DTC114EU
DS11 DS14
DS8
CL-170Y CL-170Y CL-170Y
R46
1k
+8V
+5V +5V
C16
R13
0.01 5.04V
100k
C15
0.001
R11
1M
48
1
PB1/AN1
P21/RXD
47
2
PB0/AN0
P20/SCK3
46
3
AVSS
P87
45
4
TEST
P86/FTID
5 44
X2
P85/FTIC
6 43
X1
P84/FTIB
7 42
VSS
P83/FTIA
8 41
IC2
OSC1
P82/FTOB
9 40
HD6433640A33H
OSC2 P81/FTOA
10 39
RES P80/FTCI
11 38
P90/FVPP P77
LRES 12 37
P91 P76/TMOV
LWR 13 36
P92 P75/TMCIV
LRD 14 35
P93 P74/TMRIV
LA0
15 34
P94 P73
16 33
IRQ0 VCC
R12
100k
+5V +5V
MEASUREMENT CONDITIDNS
OSCILLOSCOPE : 20 MHz
VOLTMETER : 1 MΩ/V
5.04V
+5V
R41 R39
R40
100k 100K 100k
KY1
P1 P2 P3 P4 1
C36 C37
C38
47p 47p 47p C41
S14 S13
S16 S9
S15 47p
KY4
4
C42
47p S10
R44
100k
KYUP KY7
^
7
C39
C43
47p
0V
S18 47p S11
R45
100k
KYDN KYA
4.97V
0V
v
C40 C44
OPF2 OPF1 OPF0 47p
S19 47p S12
R47 R48
1k 1k
+8V
+5V
D
D6
E
DA204U
D7 D8 D9
DA204U DA204U
DA204U
R25
1k
D5
DA204U
KYP4
KYP3
C
R24
KYP2
1k
KYP1
KYP0
D2 R20
KYDN
MA111 100k
KYUP
KYB
R19
5.04V
KY0
100k
+5V
KYA
KY9
R18
C26
R16
100k 0.1
3.3k
R21 R23
C17
Q2
100k 3.3k
0.1
IC4 DTA114EU
TC7W04F
1 5
2 6
Q4
3 7
Q3
DTA114EU
4 8
DTC114EU
D3
Q5
MA111
DTC114EU
R22
100k
R17
100k
+5V
FRXD
FTXD
13.18V
5.04V
Explanatory notes
R49
IC5
22k
AN8005M
VOLTAGE LINE
+5V
TX LINE
O
G
RX LINE
C18 C19 C20
470p 10
0.1
11 - 1
+5V +5V
KY2 KY3
2 3
C45 C49
S5 S1
47p 47p
KY5 KY6
5 6
C46 C50
S6 47p S2
47p
KY8 KY9
R35
100k
8 9
C51
C47
S7 47p S3
47p
KY0 R37 KYB
R36
R38
100k
100k 100k
0 #
C48
C52
47p
S8 47p S4
+8V
+5V
AF VR
R26
EVU-F2JFK4B14
C33
47p
POSW
POW SW
C32
47p
S20
J1
+8V +8V
CLON
AFO
PTT
to the
MICE
Microphone
MIC
GND
HANG
SQL
C27 C29 C31
+5V 0.001 47p 0.001
C28 C30
47p 0.001
D4
MA111
L1 B A
1µ
J2
AFO
GND
MIC
MICE MICE
POSW POSW to
MAIN
FRXD
unit
FTXD
J5
+8V
SPE
SP
SQL
VCC VCC
VCC
I
R15
10k
C21 C22 C23 C24 C25 W2 W1
1 0.1
470p 470p 470p
FRONT UNIT