Icom IC-F2610 Service Manual page 42

MAIN UNIT(3)
+5
+5V
+8V
+8V
BUS LINE1
+5V
+5V
+18V
T8V
T8V
+8V
+8V
L7
A IC11
LA-502
SC-1322/SC-1323/SC-1324
EP3
a
MT8V
Q11
2SJ377
b
R:0V
L20
T:7.80V
656LZ-09K
R103
3.3k
R:12.41V
T:8.58V
MAIN
L5V
UNIT
D510
(2) DA204U
R560
1k
OPS2
OPS1
BOOT
L5V
CPU5V
CPU5V
Q513
DTA144EU
BOOT
FVPP
Q511
DTA144EU
MD1
R547
1k
Q509
DTC144EU
FVPC
17.45V
16.54V
Q44
2SK1069
+18V
16.55V
C258
1
MEASUREMENT CONDITIONS
OSCILLO SCOPE:20MHz
VOLTMETER:1Ω/V
BUS LINE3
1/2VDD
L5V
VCC
+8V
11 - 4
Explanatory notes
Note
[L]: Lo-band
VOLTAGE LINE
[M]: Middle-band
[H]: Hi-band
TX LINE
[R]: R&TTE Type
[O]: OTHER
RX LINE
A : Lo/Middle/Hi-band
MT8V
L22
656LZ-09K
VCC
R:13.13V
R98
T:12.27V
HV
100
R363
R:13.20V
4.7k
T:12.37V
R:0V
T:1.77V VCC
C449 47p
IC10a
NJM2904V
R97 R96
8
R101 220k 4.7k 4.7k 3
1 +
2
-
4
VCC
6
7 -
5
+ R:0.58V
T:3.77V
IC10b
R99
NJM2904V
18k
PDET L53
SLF7032-
101MR45-2
D45
MA111
R:1.05V
T:3.76V
HV
VCC
D508
DA204U
R546
1k
R:8.71V
T:0.10V
BOOT
L5V
VCC
5.02V
IC17
R:0V
AN78L05M
T:8.66V
O I
G
Q42 VCC
12.57V
2SB1123
5.05V
Q43
2SC4081 L5V VCC
D30
1SS355
FVPP
4.53V
IC506
R542
5.06V S-812C50AUA-C3E
10k
R:0V
HV
T:8.67V
O I
G
R549
+5V
47k
Q512
2SC4081
0V
2.26V
5.04V
Q508
12.02V 2SK1829 7.54V
R260
100
D31 L45
IC18 DTC1
HSU88 4.7µ
TC7W04FU DTC2
DTC3
1 8
2 7
3 6
4 5
R262 47k
1/2VDD
L5V
VCC
+8V
+5
+8V
+5V
T8V
+8V
R:13.21V
T:12.48V
MT8V
HV
Q12
2SJ377
HV
D509
0.63V
Q14
DAN202U
DTC144EU
PWON
BOOT
IC16
7.93V
TA7808F
+8V
O I
G
R:8.06V
T:0V
Q36
2SD1664
R8V
D27
DA204U
+8V
R563
47k
VRX
Q37
2SC4116
+5V
R:0.47V
Q40
T:0.63V
2SD1664
T8V
D29
DA204U
R:0V
T:8.06V
+8V
R565
47k
VTX
Q41
2SC4116
R:0V
T:8.05V
+5V
R:0.64V
Q38
T:0.47V
2SD1664
MT8V MT8V
D28
DA204U
1.10V
+8V
Q39
DTC114YU Q514
DTA144EU
TMUT
+5V
R:5.01V
T:0V
IC501
LC73661M
L5V 1 20 DTMF
VDD TONE
2 19
XMIT CD
3 18
NC NC
4 17 DTR1
C1 R1
5 16 DTR2
C2 R2
6 15 DTR3
C3 R3
7 14 DTR4
VSS R4
8 13
NC NC
9 12
OSC1 MUTE
10 11 DTC4
C553 OSC0 C4
33p
C554
33p
1/2VDD
L5V
VCC
+8V
+5
+8V
+5V
VCC
R595 10k C93 220
SQL OPEN 0.87V
1.27V
SQL CLOSE 4.56V
C371 0.001
IC8
C92
6.10V LA4425A
0.1
C94 470 5 1
_SP 4
2 Q7
C587 47p 3 DTC363EK
C606 22p[R]
C330 R349
0.1 10k
AFO
C86 R81
4.07V 7.35V
0.1 10k
BEEP
IC7
M5282FP
3.96V
1 10
VCC2 VCC
PAMIC 2 9
IN+ VCAOUT
3 8
C318 R339 IN- CTL
4.13V 4 7
0.01 27k OUT VCAIN
5 6
GND NC
C316 0.1
4.37V
R80 22k C84 2.2
1.71V
IC9b
SQL OPEN 0V
C95 R87
TA75W558FU
SQL CLOSE 4.21V
2.52V 0.1 10k
5
7 +
6
-
R94 C101 C326
10k 0.01 470p
2.47V
Q8 Q6
R89 R88
DTC114EU DTC114EU
22k 10k
PASP
2.51V
C72 R61
SQL OPEN 0V
2.2 100
SQL CLOSE 4.61V
[SP MODE]
R68 C73 R62 C70 R52 C67
22k 0.1 1.5k 0.047 2.2k 0.047
4.76V
2.51V 2.53V
8 3 5
1 + 7 +
2 6
- -
2.53V 4
0V IC3a IC3b 2.52V
R67
TA75W558FU TA75W558FU
10k
HFSW
Q5
2SC4116
+5 +5 +5
CDEC
C508 R515
10 39k
AFOUT
DISC
Q503 3.10V
0.50V
C61
XP4601
2.66V
2.2
1 6
R509
IC2a
10k
2 5 TA75W01FU
AFO 8
1 +
3 4
-
4
C506
0.1
3.32V 2.55V
R45 56k
Q47
DTC144EU
C315 180p
DIM _DIM
Q45
DTC144EU
HORN _HORN
R267 100k
1/2VDD
5.10V
L5V
IC504
TC4W53FU
R526
100k
1 8
2.50V
C518
EPTT 2 7 4.97V
10
3 6
4.99V
4 5
Q506
2SK1069
0.67V
R8V
T8V
L5V
VCC
+5
+8V
BUS LINE1
+5V
R85
47
a
VLO
MIN:0.40V
MAX:2.75V
SQL OPEN 4.81V
SQL CLOSE 0.12V
+5
Q515
DTA144EU
AMUT
MAIN
UNIT
(4)
+5
C69
0.047
2.53V
1/2 VDD
+5
CDEC
AFOUT
DISC
R42
2.47V
100
+5
C60
1
3
a
2
R313
270k
_DISC
R44 22k
2.53V
_DIM
_HORN
R398
100k
R372
1k
PTT
C360
1
IN
R8V
T8V
BUS LINE3
L5V
VCC