Voltage Diagrams; Front Unit - Icom IC-910H Service Manual

SECTION 12

VOLTAGE DIAGRAMS

12-1 FRONT UNIT

D36
[TX]
DAP202K
[COMP]
[VOX]
D37
1SS355
MAIN
TX/RX LED
DS32
R74 470 SEC2462C
R75 390
DS33
R76 470
SEC2462C
R77 390
SUB
TX/RX LED
MAIN
R1 J1 J2
RV-314 +5V +5V
6 1
5 2
[SQL VR] MSVR MSVR
4 3
MAVR MAVR
3 4
2 5
GND 6
1
[AF VR]
VR-A BOARD
SUB
J1 J11
R1
RV-314 +5V
+5V
6 1
5 2
[SQL VR] SSVR SSVR
4 3
C90
SAVR SAVR
3 4 0.001
2 5
GND
1 6
[AF VR]
VR-B BOARD
FUNC BOARD
D1
[SET SW]
DAP202K
[ATT SW]
[AFC SW]
D2
J1 J3
DAP202K KST1 KST1
[AGC SW] 1 6
KST2 2 5 KST2
KST3 KST3
3 4
KRT0 KRT0
4 3
[TS SW] KRT1 KRT1
5 2
GND GND
6 1
D3 IC6
DAP202K HN58X2464TI
1
[LOCK SW] A0
2
A1
3 A2
4
VSS
J1 J10
R1
RV-316 +5V +5V
6
1
NC 5 2
[SHIFT VR] SFVR SFVR
4 3
RIVR RIVR
3 4
2 5
GND
1 6
IC7
C13
[RIT VR] S-80942ANMP-DD6
0.001
5
4
RIT BOARD
C15
0.027
68nsec
C19
0.001
J4
R44
+5V
4.6V 1 220k
to MAIN
B
2
SENSOR A
3
R43
4
100k
R48
220k
R47
100k
C23
0.1
R51 R53
100k 2.2k
R52
1k
C24
0.001
L1
J2 HF50ACC322513-B
J5
J1
PHIN PHIN
6 1
GND GND L2
R2 100 5 2
SSPO
4 SSPO HF50ACC322513-B
3
PHG
100 3 PHG1
R1 4
MSPO MSPO
2 5 L3
GND GND
1 6 HF50ACC322513-B
R59
100k
L1
C1
C3
0.001 C2 HF50ACC322513-B
0.001
0.001
JACK BOARD
R60
2.2k
J1
J2 J6
GND GND
7 1 1 1 L4
2 2 HF50ACC322513-B
+9V +9V
2 3
6 8 3
MIUD MIUD2 EP1
4
4
MSQLS MSQLS
5 3 5 5
PTT PTT L5 HF50ACC322513-B
4 6 6
AFO AFO
7 7
GND
GND
8 8
MICE MICE
9
9
MIC MIC EP4
10
10
MIC BOARD DISPLAY BOARD
R1
1k
POWK
L201
[POWER]
C1
SLF7032T-101MR45-2
0.001
D1
R2
1SS355 [KOR]only
47k KRT0 KRT0
VER1
D2
R3
KST0 C204
1SS355
47k except[EUR]
KRT0 KRT1 KRT1 100
VER2
KRT1
D3
R4
KRT2 [AUS], [EUR]only
1SS355
47k KRT2 KRT2
VER3 R188 1k
14KT
R5
47k
KRT3 R187 1k
43KT
D5
R6
1SS355 except[USA-1]
MRLE 47k KRT4 KRT4 R186 1k
12KT
14KR
D6
MTLE R7
1SS355 except[USA-1]
47k KRT5 KRT5
43KR
D7 C2
R8
1SS355 except[USA-1]
0.1
SRLE 47k KRT6 KRT6
12KR
IC3
STLE R9 BU4052BCFV
47k KRT7 SAVR 1
Y0 VDD
POVR 2
Y2 X2
3
Y X1
SFVR
4 Y3 X
SSVR 5
Y1 X0
6
INH X3
7
VEE A
8
VSS B
5V
1SS355
[PWR CONTROL]
R178
1k
POVR
R10 SMLS1
EVU-FLAEC2B14 FORL1
[MIC GAIN CONTROL]
MIUD1
R179
CENM1
1k
MIVR
R11
EVU-FLAEC2B14
PHIN1
RESET
+5V
C216
C5V
C14
0.1
8
VCC
7
WC
SCL 6
5
SDA
MDAT1
MCK1
DIMV
TONE1
SBSY1
R36
R205 R38
MITX
100k 100k 10k
CNVS
1
CD OUT
2
VDD
3
NC VSS
C17 12p
R37
C16 C213
39k
0.001 0.1
R40 100k
BFST1
X1 : CR-636
C18 12p R42 100k
(14.7456 MHz)
KDS1
R46
1M
MDIB
MDIA
R45
8
SEND2
100k
1 ETON1
7 12PV1
2 BEEP1
C20 C21 IC8A
100p 0.1
TC7W08F
R50 C527
1M 0.1
R49
100k
5
3
6
C22
IC8B
100p
TC7W08F
4
4.96 RXD
TXD
R55 6.8k
4.96
R56
IC9B 33k
TC7W04F
8
Q12
2 6
D13
1 7 2SA1586
1SS355
R57
47k CIV
IC9A
4
TC7W04F 4.76
R54 CIVE
47k
R58
18k
3 5
W2
IC9C
Q13
TC7W04F
0 2SC4116
PHIN1
SSPO
PHG
MSPO
R61
47k
MIUD1
C27
D14
0.001 D15
DAP202K
1SS355
ACUD
C25
+9V
0.001
PTT
PTT ON :0.19
PTT OFF:0.67
MEASUREMENT CONDITIONS
MAIN:146.0MHz MODE:FM
SUB :440.0MHz MODE:FM
DIGITALMULTIMETER
Unit:Volt
EP2
EP3 MICE
MIC
12 - 1
MP801
-5.01
R201 1.5
D202 L203
8 1
SB07-03C
R202 1.5 CD CS SLF7032T-101MR45-2
7 2
SI ES
6 3
V+ CT
5 4
INVIN GND
L202
C208 C210
SLF7032T-101MR45-2 0.1
IC201 150p
C211 C212
NJM2360M 0.1
100
R203
R204
2.7k
C207
8.2k 100
0.1
14KT
Q1
+5V
2SD1664
C4 0.1 R96 R190
R189 10k 4.33
47k 10k
IC5
BU4052BCFV
16 43LV1 1 16
Y0 VDD
15 MIVR NSQS1 2 15 NSQM1
Y2 X2
14
MSVR 3 14 AVXL1
Y X1
TEMP1
13 4 Y3 X 13
12 MAVR VOXL1 5 12
Y1 X0
11 RIVR 6 11 OVDV1
INH X3
10 7 10
VEE A
9 8 9
VSS B
D9
Q11
2SC4116
R13
C3 0.1 1k
4.96
DIMV
IC4
BU4052BCFV
1 16
Y0 VDD
2 15 CENS1
Y2 X2
3 14
Y X1 DS31
MP2X
4 13
Y3 X A0095
5 12 SMLM1
Y1 X0
6 11
INH X3
R183
7 VEE A 10
8 9 10k
VSS B
MP2Y
W1
ALCL1
+9V
R39
47k
C600 0.1 C577
0.1
TXS1
C38
0.1 RXS1
L11
0.1 1 H C576
0.1
C56
0.001
C40
470
1 80 14UL1
P96/ANEX1/SOUT4 P10/D8
2 79 43UL1
P95/ANEX0/CLK4 P11/D9
12UL1
3 78
P94/DA1/TB4IN P12/D10
4 77 TXS1
P93/DA0/TB3IN P13/D11
5 76 RXS1
P92/TB2IN/SOUT3 P14/D12
6 75 LCDA
P91/TB1IN/SIN3 P15/D13/INT3
7 74 RD
P90/TB0IN/CLK3 P16/D14/INT4
8 73 WR
BYTE P17/D15/INT5
LCD0
9 CNVSS P20/A0(/D0/-) 72
10 71 LCD1
P87/XCIN P21/A1(/D1/D0)
11 70 LCD2
P86/XCOUT P22/A2(/D2/D1)
12 69 LCD3
RESET P23/A3(/D3/D2)
13 68 LCD4
XOUT P24/A4(/D4/D3)
LCD5
14 67
VSS P25/A5(/D5/D4)
LCD6
15 XIN P26/A6(/D6/D5) 66
16 IC1 65 LCD7
VCC P27/A7/(/D7/D6)
17 64
P85/NMI M30622MAA-869FP VSS
18 63 KRT0
P84/INT2 P30/A8(/-/D7)
19 62
P83/INT1 VCC
KRT1
20 61
P82/INT0 P31/A9
KRT2
21 P81/TA4IN/U P32/A10 60
22 59 KRT3
P80/TA4OUT/U P33/A11
23 58 KRT4
P77/TA3IN P34/A12
R78
24 57 KRT5
P76/TA3OUT P35/A13
2.2M
25 56 KRT6
P75/TA2IN/W P36/A14
KRT7
26 55
P74/TA2OUT/W P37/A15
KST0
27 P73/CTS2/RTS2/T P40/A16 54
28 53 KST1
P72/CLK2/TA1/OU P41/A17
29 52 KST2
P71/RXD2/SCL/TA P42/A18
30 51 KST3
P70/TXD2/SDA/TA P43/A19
C39
0.1
TST0
MPSA
MPSB
MRLE
PTT ON :0.19
C541 C542 C549
PTT OFF:0.67 C536 C538 C547 C548
0.1 0.1 0.1 0.1 0.1 0.1 0.1
MTLE
R66 R69 R70 R71
C94 C36
47k
1k 47k 1k
0.1 0.1
SRLE
R72 D16
R67
2.2k 1SS355
2.2k
STLE
Q16 Q17
2SC4116 2SC4116
R73
R68
820
820
TX:4.93 TX:0
RX:0 RX:0.64
5.07
KST3
KST2
DS1 - DS24
TLGE1002
KST1
KST0
DS7 DS8 DS9 DS10 DS11 DS12 DS19 DS22
DS4 DS5 DS6 DS13 DS14 DS15 DS20 DS23
[M/S]
DS1 DS2 DS3 DS16 DS17 DS18 DS21 DS24
KRT7
[SUB]
KRT6
7.22 [CALL]
KRT5
R14
R15 R16
27
82 82
4.33 14V
5V
FAN ON:0.19
OFF:0
Q22
DTA144EU
4.92
R92
Q23
DTA144EU
R93
Q26
DTA144EU
R98
PCK1
PDAT1
14DT1
43DT1
PST41
14UL1
43UL1
BFST1
IC2
SED1540FOA
SG22 51 30 SG43
SEG21 SEG42
52
SG21 29 SG44
SEG20 SEG43
SG20 53 28 SG45
SEG19 SEG44
SG19 54 27 SG46
SEG18 SEG45
SG18 55 26 SG47
SEG17 SEG46
SG17 56 25 SG48
SEG16 SEG47
SG16 57 24 SG49 CIV
SEG15 SEG48
SG15 58 23 SG50 CIVE
SEG14 SEG49
SG14 59 22 SG51
DRES1
SEG13 SEG50
SG13 60 21 SG52 PTT11
SEG12 SEG51
SG12 61 20 SG53 ACUD
SEG11 SEG52
SG11 62 19 SG54 SEND1
SEG10 SEG53
SG10 63 18 SG55 ATXS1
SEG9 SEG54
64 17
SG09 SG56 DASH1
SEG8 SEG55
SG08 65 16 SG57
DOT1
SEG7 SEG56
SG07 66 15 SG58 SBSY1
SEG6 SEG57
SG06 67 14 SG59 KDS1
SEG5 SEG58
SG05 68 13 SG60 CENM1
SEG4 SEG59
SG04 69 12 SG61 AGRM1
SEG3 SEG60
SG03 70 11 SG62
SQLM1
SEG2 SEG61
SG02 71 10 SG63
NSQM1
SEG1 SEG62
SG01 72 9 SG64 SMLM1
SEG0 SEG63
LCDA 73 8 SG65 CTCM1
A0 SEG64
LCDC 74 7 SG66 BEEP1
OSC1 SEG65
75 6 SG67 CENS1
OSC2 SEG66
76 5
RD SG68 AGRS1
E(RD) SEG67
WR 77 4 SG69
SQLS1
R/W(WR) SEG68
78 3 SG70 NSQS1
VSS SEG69
LCD0 79 2 SG71 SMLS1
DB0 SEG70
LCD1 80 1 SG72 CTCS1
DB1 SEG71
MSC1
OVDV1
TONE1
R79
47k
5V
C41 C42
0.1 0.1
R83 R82
R81 R80
1.2k 10k 10k 10k
INTS1
INTM1
+9V
TXS1
RXS1
SCON1
MCK1
MDAT1
L7
HF50ACC322513-B
ETON1
AVXL1
VOXL1
Q18 C46
0.1
DTC114TU
PCK1
IC10
PDAT1
BU4094BCFV
OPB11
Q19
FRST
1 16
DTC114TU STRB VDD
MDAT1 2 15 12PS1
DATA OENA DRES1
MCK1 3 14 MSC1 ALCL1
CLK Q5
MRL 4 13 FAN1 12DS1
Q1 Q6
MTL 5 12 FAN2 43PV1
Q20 Q2 Q7
SRL 6 11 FAN3 12UL1
DTC114TU Q3 Q8
STL 14PV1
7 Q4 Q'S 10
12ST1
8 VSS QS 9
POWS1
R185 12PV1
Q21
47k TEMP1
DTC114TU
IC11
R88 120
AN78L05M
EP5
H5V
R87 120
C48
C50 C49 C47
0.1
10 0.1 10
5V
FORL1
D47 D48 D49 D50 D51 D52
DAP202K DAP202K
DAP202K DAP202K DAP202K DAP202K
D44 D45 D46
DAP202K DAP202K DAP202K
[V/M] [A=B] [A/B]
[SSB]
[FM] KRT5 KRT4 KRT3
KRT4 KRT3
[MW] [M-CL] [M->V]
[TONE] [SPLIT] KRT2 KRT7 KRT6
KRT7 KRT6
[CHECK] [MPW]
[MPR]
KRT5 KRT4 KRT3
[SCAN] [SWEEP] [F-INP]
KRT2 KRT7 KRT6
Q24
2SB1201
[SATELLITE] [RIT]
KRT5 KRT4
R90
R91 10k
10
[M-DOWN]
[M-UP]
C53 0.001
KRT3 KRT2
Q25
2SC4116 D17
J12 P1
MA8068
39k L6
1
HF50ACC322513-B 2
3
8.2k
FAN ON:11.62
C51
OFF:13.36
10
560 FAN ON:7.37
R94 OFF:0
12k
LOCK :0
J9
UNLOCK:4.11
GND
20
R108 220 PCK
19
R107 220 PDAT
18
R106 220 14DT
17
R105 220 43DT
16
R104 220 PST4
15
R103 1k 14UL 14
R102 1k 43UL
13
GND
12
R101 R100 to PLL
C72 C73 GND
11
100k 100k unit J1
0.001 0.001 LOCK :0
10
UNLOCK:4.15
BFST
9
R41 220
8
14V
7
L10 14V
6
C71
HF50ACC322513-B
5
0.001
+9V
4
3
-5V
2
GND
1
R118
10k
R114 47k
R116 47k
R115 47k
J8
GND
1
CIV
2
CIVE
3
220
R113 DRES
4
D24 1SS355 PTT1
5
MIUD
6
R135 220 SEND
7
R136 220 ATXS
8
D25 1SS355 DASH
9
D26 1SS355
DOT
10
R155 220 SBSY
11
R124 220 KDS
12
R130 1k CENM
13
R132 220 AGRM
14
R134 220 SQLM to MAIN
15
R126
1k NSQM unit J1151
16
R160 220 SMLM
17
R137 220 CTCM
18
R162 220 BEEP
19
R129 1k CENS
20
D20 1SS355 R131 220 AGRS
21
220
R133 SQLS
22
R125 1k NSQS
23
R159 220 SMLS
24
R138 220 CTCS
25
R123 220 MSC
26
220
R161 OVDV
27
-5V
28
C86 1 TONE
29
GND
30
C89
C88
0.001
R139
0.001
1M
11.5msec
R141
at 88.5Hz
1M
3.9V
R111 R112
R117
R150
100k 100k
18k 18k
FM,TONE ON,at TX
J7
R110
R109 C74 C75 GND
220 1
220 0.001 0.001 INTS
2
INTM
3
R151 220 TXS
4
R152 220 RXS
5
R127 220 SCON
6
220
R153 MCK
7
R154 220 MDAT
8
9
L8 HF50ACC322513-B
+9V
10
R184 220 ETON
11
R128 220 AVXL
12
R157 220 VOXL
13
+5V
14 to MAIN
220 15 unit J1101
R182
PCK
16
R181 220 PDAT
17
R172 220 OPB1
18
FORL
19
R163 220 12PS
20
R158 1 ALCL
21
R164 220 12DS
22
R165 220 43PV
23
R166 220 12UL
24
R167 220 14PV
25
R168 220 12ST
26
R169 220 POWS
27
R170 220 12PV
28
R171 220 TEMP
29
GND
30
D10
D31
1SS385
RB706F-40
R19 100k
C57 0.47
R156 220
J14
MSPO
1
SSPO 2
PHG
3
from MAIN
14V
4 unit J1251,
HV
5 J1201
MIC
6
MICE 7
13.57 13.38
CHASSIS
GND
1
NC
2
MF1
FANV
3
+
M
-