Voltage Diagram; Front Unit - Icom IC-F1610 Service Manual

SECTION 11

VOLTAGE DIAGRAM

11-1 FRONT UNIT

SEG54 103
SEG54
SEG55 104
SEG55
105
SEG56
SEG56
106
SEG57
SEG57
SEG58 107
SEG58
SEG59 108
SEG59
SEG60 109
SEG60
SEG61 110
SEG61
SEG62 111
SEG62
SEG63 112
SEG63
113
SEG64
SEG64
SEG65 114
SEG65
SEG66 115
SEG66
SEG67 116
SEG67 SED1526F0A
SEG68 117
SEG68
SEG69 118
SEG69
SEG70 119
SEG70
120
SEG71
SEG71
121
SEG72
SEG72
SEG73 122
SEG73
SEG74 123
SEG74
SEG75 124
SEG75
SEG76 125
SEG76
SEG77 126
SEG77
SEG78 127
SEG78
128
SEG79
SEG79
C1
0.1
C2
0.1
C3
0.1
C4
0.1
C5
0.1
C7
R1 R2 R3
C6 1 5.04V
1.2M RV-158 1M
1
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
DS1
R29
82
R27
120
DS4 DS7
FY1112H FY1112H
DS3 DS6
FY1112H FY1112H
DS2 DS5
FY1112H FY1112H
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
57 SEG8
SEG8
56 SEG7
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 LRES
COM10
41 COM9 LWR
COM9
40 COM8 LRD
COM8
39
COM7 LA0
COM7
0V
5.01V 5.00V
R7
10k
3 2 1
C10
R4 R8
V V O 0.22
1k 220k
Q1
S D U
2SC4081
S D T
R6 R9
N N R5 R10
C11
C C 220k
100k 470k D1 100k
0.01
4 5 MA111
IC3
S-80742SL
6.20V LIGHT ON 0V
0V 7.98V LIGHT OFF 7.98V
R43 R42
100k 100k
P0
C34 C35
47p 47p
S17
Q6 Q8
DTA143ZU DTA143ZU
DIM ON 7.90V
R34
DIM OFF 0V
120
Q7 Q9
DTA143ZU DTA143ZU
R30 R31 R32
R28
470 470 150
120
DIM ON
DIM OFF 4.97V
Q10
DTC114EU
DS10 DS13 DS16
LIGHT ON
CL-170Y CL-170Y CL-170Y
LIGHT OFF
W3 W4
DS15
OPF2
CL-170Y Q11
DTC114EU
DS8 DS11 DS14
CL-170Y CL-170Y CL-170Y
R46
1k
C16
R13
0.01 5.04V
100k
C15
0.001
R11
1M
1 48
PB1/AN1
P21/RXD
2 47
PB0/AN0 P20/SCK3
3 46
AVSS P87
4 45
TEST P86/FTID
5 44
X2 P85/FTIC
6 43
X1
P84/FTIB
42
7
VSS
P83/FTIA
41
8 IC2
OSC1
P82/FTOB
9 40
HD6433640H
OSC2
P81/FTOA
10 39
RES P80/FTCI
11 38
P90/FVPP P77
12 37
P91 P76/TMOV
13 36
P92 P75/TMCIV
14 35
P93
P74/TMRIV
34
15
P94
P73
33
16
IRQ0
VCC
R12
C17
100k
0.1
MEASUREMENT CONDITIDNS
OSCILLOSCOPE : 20 MHz
VOLTMETER : 1 MΩ/V
5.04V
R41 R39
R40
100k 100k
100K
KY1
P1 P2 P3 P4 1
C36 C37 C38
C41
47p 47p S14 47p S13
S16 S15 S9
47p
KY4
4
C42
47p S10
R44
100k
KYUP KY7
^
7
C39
C43
0V
S18 47p
47p S11
R45
100k
KYDN KYA
4.97V
R38
0V
100k
v
*
C40 C44
OPF1 OPF0
S19 47p 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
KYA
KY9
R18 C26
R16
100k 0.1
3.3k
R21 R23
Q2
100k 3.3k
IC4 DTA114EU
D4
TC7W04F
MA111
1 5
2 6
Q4
3 7
Q3
DTA114EU
4 8
DTC114EU
D3
Q5
MA111
DTC114EU
R22
100k
R17
100k
13.18V
5.04V
R49
IC5
22k
AN8005M
+5V
O I
G
C19 C20
C18
470p 10
0.1
11 - 1
+5V
KY2 KY3
2 3
C45 C49
S5 S1
47p 47p
KY5 KY6
5 6
C46 C50
S2
47p S6 47p
KY8 KY9
R35
100k
8 9
C51
C47
S7 S3
47p
47p
KY0 KYB
R37
R36
100k
100k
0 #
C48
C52
47p
S8 S4
47p
AF VR
R26
EVU-F2JFK4B14
C33
47p
POW SW
C32
47p
S20
J1
+8V
CLON
AFO
PTT
MICE
MIC
GND
HANG
C27 C29 C31
0.001 47p 0.001
C28 C30
47p 0.001
L1 B A
1µ
J2
AFO
GND
MIC
MICE
POSW TO
FRXD MAIN
FTXD UNIT
+8V J5
SPE
SP
SQL
VCC
R15
10k
C21 C22 W1
C23 C24 C25 W2
1 0.1
470p 470p 470p
FRONT UNIT