Icom IC-F2610 Service Manual page 41

MAIN UNIT(2)
+5
+5
+8V
+8V
BUS LINE1
+5V
+5V
+18V
+18V
PLLIN
PLLIN
R135 R134
8.2k 8.2k
C168
R:3.27V
6p[L] C167
T:3.40V
L40 D19 4p[H],[M-R] 15p[L] R136
0.56µ 1SV217 5p[O] 6p[O] 4.7
Q21
C629 C158
2SC5110
0.5p[M-R] 0.5p
R:5.61V
T:5.43V R137
680
C170 A R:2.85V
7p/ T:2.91V
L42 D21 6p/ R139 R138
0.56µ 1SV217 3.5p 8.2k 8.2k
R:3.38V
C173 T:3.23V
3p[H] R140
47p[O] 4.7
A
Q23 C163
a 2SC5110 0.5p
R:0.74V
A T:0.72V
R150
A
R141
47k/ C174
680
22k/ R149 0.75p[L]
10k 220k 0.5p[O]
b
R:2.90V
T:2.85V
4.95V 4.95V
MAIN
UNIT
(1)
R271 C269 R561
220k 0.22 1k
Q48
2SC4116
R516
12k
X4
C513 CR-567
33p 9.8304 MHz
2.50V
f=9.83MHz
5.0Vp-p
7.93V
+8V
IC505
BU4066BCFV
FRXD 1 14
I/O VDD
2 13
O/I CONT.A
3 12
O/I CONT.D
4 11
I/O I/O
5 10
CONT.B O/I
6 9
CONT.C O/I
7 8
VEE I/O
4.98V
4.98V
CPU5
L5V
IC27
CAT25C64SI
1 8
CS VCC
2 7
SO HOLD
3 6
WP SCK
4 5
VSS SI
PTT
MEASUREMENT CONDITIONS
OSCILLO SCOPE:20MHz
VOLTMETER:1Ω/V
BUS LINE2
BUS LINE3
1/2VDD
1/2VDD
L5V
L5V
VCC
VCC
+8V
+8V
CPU5
CPU5
R131
2.97V
10
6.84V
R132 C151 R126
10k 5p 6.8k
2.61V
6.27V
Q18
2SC5110
Q22
Q19 1.87V
DTC114YU
2SC5110
Q27
DTA144EU 2.47V
R:0V
T:2.91V
6.76V
R:0.95V
T:4.83V
6.76V
R129
8.2k
L31 R122
C146
22n[L] 33[L]
3.17V
5p[H]
18n[O] 18[O]
6p[O]
Q24
Q20
DTC114YU
2SC5110
VTX
Q28
DTA144EU 2.57V
R:2.91V R:4.91V
T:0V T:0.96V
CPU5V
RES
RES
SIFT
CPU5
EXTAL
IC19 XTAL
S-80842CLMC-B63-T2
1 5
OUT NC C340 0.001
2 CPU5
VDD 4.98V
3 4
VSS NC C214 10
C212 0.001
CPU5 CPU5
SIFT
C539 0.68
EXTAL
XTAL
C540 0.1
Explanatory notes
C541 0.1
VOLTAGE LINE
f=9.83MHz TX LINE
5.0Vp-p
5.06V
D37 R530
1SS355 3.3k
L5V
FRNT
RXD
TXD
IC26
Q50 TC7W04FU CSCK
DTA114EU
CSI
1 8 CSO
Q51
DTC114EU CCS
2 7
PTTO
0V 3 6 PTTI
AFON
7.95V
4 5 CIRQ
BUSY
Q507
DTC144EU
4.96V
CPU5
L5V
Note
[L]: Lo-band
[M]: Middle-band
[H]: Hi-band
[R]: R&TTE Type
[A]: [EUR-2/-4/-6/-7/-9/-11]
[O]: OTHER
: Lo/Middle/Hi-band
A
+5
+8V
+5V
+18V
T8V
L18 1µ
C287 47p
R:7.22V
R:2.83V
T:0V
L21
T:0V
C270 470p 1µ
except[R]only
R:2.30V
L51 D18 R620 T:0V
15n MA77 22
Q3
2SC4226
C47
22p[L-R]
R:4.40V 5p[M-R]
T:0V 0.001[O]
[R]only
R:0V
T:7.81V C135
L28
470p
15n[H]
33n[O]
C137
C138
0.001
6p[H]
4p[O] R:0V
T:2.38V
C297 C584
10p 4p
Q17 Q16
2SC5107 2SC3356
D17 C141
MA77 3p[L]
4p[O]
R:0V
R:0V
T:4.40V
T:2.68V
R:0V
T:1.90V
VRX VRX
VTX VTX
CPU5V
R535 1k
XRTS
XCTS
XTXD
XRXD
1
RES
2
XTAL
3
EXTAL
4
VCC8
5
MD1
6
MD0
7
NMI
8
FVPP/STBY
9
VCC
R574
10
1k KEYIN15/PA7
11
KEYIN14/PA6
12
SCK0/P52
IC20
13
RXD0/P51 HD64F3437F [BIIS]
14
HD64F343F16 [OTHER]
TXD0/P50
15
R575 1k VSS
16
SDA/WAIT/P97
17
P96
18
AS/P95
19
WR/P94
20
R576 1k KEYIN13/PA5
21
KEYIN12/PA4
22
RD/P93
23
IRQ0/P92
24
EIOW/IRQ1/P91
25
ECS2/IRQ2/P90
R579
1k
R578
1k
R321 R573 1k
OPT3
100k
OPT2
OPT1
MMUT
R572 1k
OPV3
OPV2
OPV1
1/2VDD
L5V
VCC
+8V
CPU5
+5
+8V
+5V
+18V
T8V
L30
Q55
0.56µ
6.80V 2SC4081 7.90V
R366
100
7.50V
MT8V
L505
22n
D16
R:0V
DA221
T:1.40V
C132
C129
4p[H] L65
9p[H]
3p[O] 15n
5p[L-R] L24 L23
7p[O] 18n 18n
Q15
2SC4703
R:0V
T:7.82V
R:0V
R:0V
T:0.82V
T:1.66V
R:0V
T:1.36V
VRX
VTX
R538 1k
R273 1k
R272 1k
R275 1k
75
P14/A4
74
P15/A5
73
P16/A6
72
P17/A7
71
VSS
70
VSS
69
PB4/XDB4 R276 1k
68
PB5/XDB5
67
P20/A8
66
P21/A9
65
P22/A10
64
P23/A11 R277 1k
63
P24/A12
62
P25/A13
61
P26/A14
60
P27/A15
W507
59 CPU5
VCC
[EUR-8/-9/-10/-11
58
/-12/-13/-14/-01/-02
PB6/XDB6 R570 1k
/-71/-72]
57
PB7/XDB7
56
P47/PW1
55
P46/PW0
54
P45/TMRI1/HIRQ1
53
P44/TMO1/HIRQ1
52
P43/TMCI/HIRQ11
51
P42/TMRI0
R577
1k
ESO
R571 1k
ESI
ECK
ECS1
ECS2
W505
R142
33k
R529
390k
Q504
2SK1069
1/2VDD
L5V
VCC
+8V
CPU5
11 - 3
+5
+8V
BUS LINE1
+5V
+18V
T8V
+8V
a
MT8V
b
CPU5V
MAIN
EPTT
UNIT
DIM
(3)
SP
PASP
PWON
VRX
VTX
PLLT
UNLK
CPU5V
PCK
PDA
PSTB
DCK
DDA
DSTB
TMUT
PA
HFSW
NWC
AMUT
MCON
MODS
BEEP
BUS LINE3
1/2VDD
L5V
VCC
+8V