Icom IC-910H Service Manual page 34

Nov. 2008
SECTION 11. SCHEMATIC DIAGRAM
DISPLAY BOARD
POWK
D36
MAIN
J1
R1
RV-314 +5V
6 D37
5
[SQL VR] MSVR
4
MAVR
3 KST0
2 KRT0
GND
1 KRT1
[AF VR]
KRT2
DS32
VR-A BOARD R74
MRLE
R75
MAIN MTLE
TX/RX LED
SUB
J1
R1
R76
RV-314 +5V SUB
6 SRLE
5 R77
[SQL VR] SSVR TX/RX LED
4 STLE
SAVR
3
2 DS33
GND
1
[AF VR]
J2
VR-B BOARD
+5V1
1
2
MSVR
3
MAVR
4
FUNC BOARD 5
6
D1 R17
[SET SW]
DAP202K
C12
[ATT SW] J11
+5V1
1
2
SSVR
[AFC SW] 3
SAVR
4
D2 J1
5
C90
DAP202K KST1 6
[AGC SW] 1
KST2 R18
2
KST3 3
KRT0
4
[TS SW] KRT1
5
GND
D3 6
DAP202K J3
KST1
[LOCK SW] 6
KST2
5
KST3
4
KRT0
3
KRT1
2
1
J10
J1
R1 +5V1
RV-316 1
+5V
6
2
NC 5
SFVR
[SHIFT VR] SFVR 3
4 RIVR
4
RIVR 3
5
2
6
GND 1
C13
[RIT VR]
RIT BOARD
C14
R34 R35
IC6
1 VCC 8
A0
2 WC 7
A1
3 SCL 6
A2
4 SDA 5
VSS
CAD.NO.5363
R36
IC7
5 1
CD OUT
2
VDD
4 3
NC VSS
C15
C16 R37
TO MAIN
SENSOR
C19
J4
+5V1 R44 R45
1
+5V 5
B 1
B 2
A
3
A
2
GND 6 4
R43
C20
C21
IC8B
R48 R49
5
6
R47 C22
8 IC9A
1 7
C23
4
R51 R53
R52
C24
J5 L1
J2
J1
PHIN
PHIN 1
6 GND L2
GND 2
R2 5
SSPO SSPO1
4 3
PHG1 L3
PHG 4
R1 3
MSPO1
MSPO 2 5
GND
GND 6
1 C27
L1
R59
C1
C2 C3
JACK BOARD
R60
C25
J6
GND
1
2
+9VM L4
3
MIUD2 EP1
J1 4
EP2
J2 MSQLS
5
PTT L5
GND 6
7 1 1
AFO
7
2 GND
+9V 8
6 8 2 3
MIUD MICE1 EP3
9
4 MIC1 EP4
MSQLS 10
5 3 5
PTT
4
6
AFO
7
GND
8
MICE
9
MIC C29
10
C30
C32 C34
C31 C33
TO NAIN
MIC BOARD
BOARD
J14
MSPO
MSPO 8 1
SSPO
SSPO 2
PHG
PHG 3
+14V
4
14V
HV
HV 5
MIC
6
MIC
MICE
MICE 9 7
R1
L201
R201
C1
R202
IC201
8
7 CD
6 SI
C204
5 V+
R2 INVIN
KRT0 KRT0 D1 VER1
R188
R3
R203
KRT1 KRT1 D2 VER2 14KT 14KT C206
R4 R187 C205
D3
KRT2 KRT2 VER3 43KT 43KT C207
R204
R5 R186
KRT3 KRT3 HD4 REPT 12KT 12KT
R6
KRT4 KRT4 D5 14KR
R7
D6
KRT5 KRT5 43KR
R8 C2
KRT6 KRT6 D7 12KR
IC3
R9
D8
KRT7 KRT7 12FM-N SAVR 1 16 SMLS1 1
Y0 VDD
POVR 2 X2 15 MIVR FORL1 2
Y2
3 X1 14 MSVR 3
Y
SFVR 4 X 13 MIUD1 4
T Y3
S SSVR 5 X0 12 MAVR CENM1 5
Y1
T 6 X3 11 6
RIVR
0 INH
7 A 10 7
VEE
8 B 9 8
VSS
PHIN1
D9
M M M
P C5 M M P C6 P
3 P P 3 2
Y S S X Y
A B
R178
POVR
R10 PWR CONTROL
R179
R11
MIVR MIC GAIN
CONTROL
C11
R39
C600
+5V1
O C C M M M M
C38 P T T P P P P
B C C 1 1 2 2
C216 1 M S X Y X Y
1 1 1
C5V
1
0 9 9 9 9 9 9 9 9 9
0 9 8 7 6 5 4 3 2 1
P A V P A P P P P P
9 V R 1 V 1 1 1 1 1
7 C E 0 S 0 0 0 0 0
/ C F 0 S 1 2 3 4 5
R180 A / / / / / /
D A A A A A A
T N N N N N N
R 0 1 2 3 4 5
G / /
/ K K
S L L
I 0 1
R205
N
4
MDAT1 1
P96/ANEX1/SOUT4
MCK1 2
P95/ANEX0/CLK4
DIMV 3
P94/DA1/TB4IN
R38 RESET TONE1 4
P93/DA0/TB3IN
SBSY1 5
P92/TB2IN/SOUT3
6
P91/TB1IN/SIN3
7
MITX
P90/TB0IN/CLK3
8
BYTE
9
CNVS
CNVSS
10
P87/XCIN
11
P86/XCOUT
C17 12
RESET
C213
13
XOUT
14
VSS
X1 15
XIN
16 IC1
VCC
C18 R40 17
P85/NMI
18
43IUP
P84/INT2
14.7456MHz R42 19
P83/INT1
20
P82/INT0
KDS1 21
P81/TA4IN/U
22
R46 14IUP
P80/TA4OUT/U
MDIB 23
P77/TA3IN
24
P76/TA3OUT
8 SEND2 25
P75/TA2IN/W
IC8A
ETON1 26
P74/TA2OUT/W
7 12PV1 27
P73/CTS2/RTS2/T
BEEP1 28
P72/CLK2/TA1/OU
29
P71/RXD2/SCL/TA
30
P70/TXD2/SDA/TA
P
C527
R50 6 P
4 P 5
/ 6 7
C 0 /
C37
T / R
3
S C D
MDIA P P P 1 P P P T Y
6 6 6 / 6 6 6 S / P
7 6 5 R 3 2 1 0 C 5
4
/ / / T / / / / L 6
T R C S T R C R K /
X X L 1 X X L T O A
D D K / D D K S U L
1 1 1 C 0 0 0 0 T E
3 3 3 3 3 3 3 3 3 4
RXD
1 2 3 4 5 6 7 8 9 0
TXD
R55
R56
Q12
IC9B
26
1 A S S P 4 P 1 D P
D13 2 T Q Q D 3 C 4 R T
I X L L A P K P E T
U S S M T V 1 V S 1
P 1 1 1 1 1 1 1 1
R57 CIV
R54
CIVE
IC9C
R58 Q13
3 5
R302
PHIN1
SSPO
PHG
MSPO
M
R61 I C94
R66
MIUD1 R69 T
X
D14
D15 R67
ACUD Q16
R68
MICE
MIC
33
MP801
CS 1 D202 L203
ES 2
CT 3
DS7 DS8
4 C208
GND
L202
C211
C210 C212
DS4 DS5
C209
DS1 DS2
+5V1 Q1
C3 1 C4 R96
2
K R14
T
IC4 IC5 R15
16 43KT 1 16 R16
Y0 VDD Y0 VDD
X2 15 CENS1 NSQS1 2 X2 15 NSQM1
Y2 Y2
X1 14 3 X1 14 AVXL1
Y Y
X 13 TEMP1 4 X 13
Y3 Y3
X0 12 SMLM1 VOXL1 5 X0 12 14KT
Y1 Y1
X3 11 6 X3 11
OVDV1
INH INH
A 10 7 A 10
VEE VEE
B 9 8 B 9
VSS VSS
R183
R190 R12
R189
Q11
C C C C S S S S S S S
O O O O G G G G G G G
M M M M 0 0 0 0 0 0 0
4 3 2 1 1 2 3 4 5 6 7
M M M
P P P 1 1
2 1 1 1 2 3 4 5 6 7 8 9 0 1
X Y X
C C C C S S S S S S S S
O O O O E E E E E E E E
R13 M M M M G G G G G G G G
4 3 2 1 1 2 3 4 5 6 7 8
DIMV
S S S S S S S S S S S
C C C C E E E E E E E E E E E
O O O O G G G G G G G G G G G
M M M M 3 3 3 3 4 4 4 4 4 4 4
R301
1 2 3 4 6 7 8 9 0 1 2 3 4 5 6
ALCL1
8 8 7 7 7 7 7 7 7 7 7 7 6 6
1 0 9 8 7 6 5 4 3 2 1 0 9 8
C C C C S S S S S S S S S S
O O O O G G G G G G G G G G
M M M M 3 3 3 3 4 4 4 4 4 4
1 2 3 4 6 7 8 9 0 1 2 5 4 3
+9VP
M M 1 4 1 1 P F 1 S
P P 4 3 2 2 S R 2 C
3 3 D D P D T S S O
X Y T T S S 4 T T N
1 1 1 1 1 1 1 L11
9 8 8 8 8 8 8 8 8 8
0 9 8 7 6 5 4 3 2 1
P P P P P P P P P P
1 1 0 0 0 0 0 0 0 0
C56
0 0 0 1 2 3 4 5 6 7
6 7 / / / / / / / /
/ / D D D D D D D D
A A 0 1 2 3 4 5 6 7
N N
6 7 C577
/ / C40
TXS1
K K
L L
2 3 RXS1
C576 51
SG22
SEG21
P10/D8 80 14UL1 SG21 52
SEG20
P11/D9 79 43UL1 SG20 53
SEG19
P12/D10 78 12UL1 SG19 54
SEG18
P13/D11 77 TXS1 SG18 55
SEG17
P14/D12 76 RXS1 SG17 56
SEG16
P15/D13/INT3 75 LCDA SG16 57
SEG15
P16/D14/INT4 74 58
RD SG15
SEG14
P17/D15/INT5 73 WR SG14 59
SEG13
P20/A0(/D0/-) 72 60
LCD0 SG13
SEG12
P21/A1(/D1/D0) 71 LCD1 SG12 61
SEG11
P22/A2(/D2/D1) 70 62
LCD2 SG11
SEG10
P23/A3(/D3/D2) 69 LCD3 SG10 63
SEG9
P24/A4(/D4/D3) 68 LCD4 SG09 64
SEG8
P25/A5(/D5/D4) 67 LCD5 SG08 65
SEG7
P26/A6(/D6/D5) 66 LCD6 SG07 66
SEG6
P27/A7/(/D7/D6) 65 LCD7 SG06 67
SEG5
64 SG05 68
VSS SEG4
63 69
KRT0 SG04
P30/A8(/-/D7) SEG3
62 SG03 70
VCC SEG2
61 71
KRT1 SG02
P31/A9 SEG1
60 KRT2 SG01 72
P32/A10 SEG0
59 73
KRT3 LCDA
P33/A11 A0
58 KRT4 LCDC 74
P34/A12 OSC1
57 75
KRT5
P35/A13 OSC2
56 KRT6 RD 76
P36/A14 E(RD)
R78
55 KRT7 WR 77
P37/A15 R/W(WR)
54 KST0 78
P40/A16 VSS
53 KST1 LCD0 79
P41/A17 DB0
52 KST2 LCD1 80
P42/A18 DB1
51 KST3
P43/A19
P
C39
5 P
1 5
P P P / 0
5 5 5 W / P P P P
5 4 3 P R W 4 4 4 4
/ / / 5 H R 7 6 5 4
R79
H H B 2 / L / / / /
O L C / B / C C C C
L D L R H W S S S S
D A K D E R 3 2 1 0
4 4 4 4 4 4 4 4 4 5
1 2 3 4 5 6 7 8 9 0
TST0
MPSA
MPSB
C41
A A I I P D D
G G N N O A O
R R T T W S T
S M S M S H 1
1 1 1 1 1 1
4 1 A A P D D S
3 4 G G O A O E
P P R R W S T N
V V S M S H 1 D
1 1 1 1 1 1 1
Q18
MRLE
C536 C538 C541 C542 C547 C548 C549
MTLE Q19
S
E
R70
N R71
D Q20
SRLE
2
C36
D16
Q17
R72
Q21
STLE
R73
H5V
C50
KST3
KST2
KST1
KST0
D42
D41
DS9 DS10 DS11 DS12 DS19 DS22
DS6 DS13 DS14 DS15 DS20 DS23
KRT7 KRT4
DS3 DS16 DS17 DS18 DS21 DS24
KRT6 KRT7
KRT5
Q24
R90
+14V
R91
C53
Q22
Q25
S S S S S S S S S S S S S S S S S S S S S S S S S S S S
G G G G G G G G G G G G G G G G G G G G G G G G G G G G R92
0 0 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3
8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
R93
Q23
1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3
2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9
DS31
S S S S S S S S S S S S S S S S S S S S S S S S S S S
E E E E E E E E E E E E E E E E E E E E E E E E E E E R98
Q26
G G G G G G G G G G G G G G G G G G G G G G G G G G G
9 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3
0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5
R94
C52
S S S S S S S S S S S S S S S S S S S S S S S S S S S
E E E E E E E E E E E E E E E E E E E E E E E E E E E
G G G G G G G G G G G G G G G G G G G G G G G G G G G
C51
4 4 4 5 5 5 5 5 5 5 5 5 5 6 6 6 6 6 6 6 6 6 6 7 7 7 7
7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
6 6 6 6 6 6 6 6 5 5 5 5 5 5 5 5 5 5 4 4 4 4 4 4 4 4 4 4
7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1 0
S S S S S S S S S S S S S S S S S S S S S S S S S S S S
G G G G G G G G G G G G G G G G G G G G G G G G G G G G
4 4 4 4 5 5 5 5 5 5 5 5 5 5 6 6 6 6 6 6 6 6 6 6 7 7 7 7
L10
6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3
C71
43IUP
DRES1
14IUP
43UL1 R102
14UL1
PST41
43DT1
14DT1
PDAT1
PCK1
C72 C73
S S S S S S S S S S S S S S S S S S S S
G G G G G G G G G G G G G G G G G G G G
2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 4 4 4
3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2
IC2 R118
5 4 4 4 4 4 4 4 4 4 4 3 3 3 3 3 3 3 3 3
0 9 8 7 6 5 4 3 2 1 0 9 8 7 6 5 4 3 2 1
S S S S S S S S S S S S S S S S S S S S
E E E E E E E E E E E E E E E E E E E E
G G G G G G G G G G G G G G G G G G G G
2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 3 4 4 R114
2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 30
SG43
SEG42
29 SG44 R116
SEG43
28 SG45
SEG44
27 SG46 R115
SEG45
26 SG47
SEG46
25 SG48
SEG47
24 SG49 CIV
SEG48
23
SG50 CIVE
SEG49
22 SG51 DRES1
SEG50
21
SG52 PTT11
SEG51
20 SG53 ACUD
SEG52
19
SG54 SEND1
SEG53
18 SG55 ATXS1
SEG54
17 SG56 DASH1
SEG55
16 SG57 DOT1
SEG56
15 SG58 SBSY1
SEG57
14 SG59 KDS1
SEG58
13 SG60 CENM1
SEG59
12
SG61 AGRM1
SEG60
11 SG62 SQLM1
SEG61
10
SG63 NSQM1
SEG62
9 SG64 SMLM1
SEG63
8
SG65 CTCM1
SEG64
7 SG66 BEEP1
SEG65
6
SG67 CENS1 D20
SEG66
5 SG68 AGRS1
SEG67
4 SG69 SQLS1
SEG68
3 SG70 NSQS1
SEG69
2 SG71 SMLS1
SEG70
1 SG72 CTCS1
SEG71
MSC1
S
C C C C E OVDV1
D D D D D D V R M O O O O G
B B B B B B D E F V C N / V V M M M M 7
TONE1
2 3 4 5 6 7 D S R 3 S C S 2 1 0 1 2 3 2
8 8 8 8 8 8 8 8 8 9 9 9 9 9 9 9 9 9 9 1
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0
0
C88
R139
L L L L L L C C C C S
C C C C C C O O O O G
D D D D D D M M M M 7
D34
2 3 4 5 6 7 1 2 3 4 3
C42 R117
R83 R82 R80
R81
R191
INTS1
INTM1 R151
TXS1 R152
RXS1
SCON1
MCK1
MDAT1
L7 R154
R184
ETON1
C46
AVXL1
VOXL1
12IUP
IC10 PCK1
FRST 1 16 PDAT1 R172
STRB VDD
MDAT1 2 15 DRES1 OPB11
DATA OENA
MCK1 3 Q5 14 MSC1
CLK
MRL 4 Q6 13 FAN1 12PS1
Q1
MTL 5 Q7 12 FAN2 ALCL1
Q2
SRL 6 Q8 11 FAN3 12DS1
Q3
7 Q' S 10
STL 43PV1 R166
Q4
8 QS 9 12UL1
VSS
14PV1
R185
12ST1
R170
POWS1
12PV1
TEMP1
IC11
R88 R140
R87
EP5
R176 R175
C49 C48
R174
C47
FORL1
*Refer to "PARTS LIST" for the parts name and value.
D50 D51 D52
D47 D48 D49
D44
D45 D46
D43
KRT5 KRT4 KRT3
KRT3
KRT2 KRT7 KRT6
KRT6
KRT5 KRT4 KRT3
KRT2 KRT7 KRT6
KRT5 KRT4
C55
C54
KRT3 KRT2
D17
J12
L6
1
4 FGND
2 NC TO FAN
3
5 FANV
J13
H5V
1
MPSA
2
AGRS1
3
R95 SQLM1
4
SQLS1
5
ATXS1
6
12IUP
7
CNVS
8
RESET
9
GND
10
R97
C119
J9
GND GND
1
-5V
2 -5V
NC
3
+9VP
4 +9V
NC
5
+14VP
6 14V
+14VP 14V
7
NC
8
R41 43UP BFST
9
R119
DRESP NC
10 TO PLL
R120 14UP
11 43LV UNIT
GND 14LV
12
PSST
13 43UL
R103 PMST 14UL
14
R104 VUMST
15 PST4
R105 43DT 43DT
16
R106 14DT
17 14DT
R107 PDAT PDAT
18
R108
PCK PCK
19
GND GND
20
R100 R101
TO MAIN
UNIT
J8
GND
1
R113 GND
CIV
2 CIV
CIVE
3 CIVE
DRES
4 DRES
D24 PTT1
5 PTT1
ACUD
6 MIUD
R135 SEND
7 SEND
R136 D25 ATXS
8
ATXS
DASH
9 DASH
D26 DOT
10
DOT
R155 SBSY
11 SBSY
R124 KDS
12
KDS
R130 CENM
13 CENM
R132
AGRM
14 AGRM
R134 SQLM
15 SQLM
R126 NSQM
16 NSQM
R160 SMLM
17 SMLM
R137 CTCM
18 CTCM
R162 BEEP
19 BEEP
R129 CENS
20 CENS
R131 AGRS
21
AGRS
R133 SQLS
22 SQLS
R125 NSQS
23
NSQS
R159 SMLS
24 SMLS
R138 CTCS
25
CTCS
R123 MSC
26 MSC
R161 OVDV
27 OVDV
-5V
28 -5V
C86 TONE
29 TONE
GND
30 GND
C89
R141
D35 D29
D28 D27
R111 R112
R150 TO MAIN
UNIT
J7
C74 C75
R110 GND
1 GND
R109 INTS
2 INTS
INTM
3 INTM
TXS
4 TXS
RXS
5 RXS
R127 SCON
6
SCON
R153 MCK
7 MCK
MDAT
8
MDAT
9 NC
L8 +9V
10
+9V
ETON
11 ETON
R128
AVXL
12 AVXL
R157 VOXL
13 VOXL
+5V
14 +5V
R182 R121 12UP
15 NC
R181 PCK12
16 PCK
PDAT12
17
PDAT
OPB1
18 OPB1
FORL
19
FORL
R163 12PS
20 12PS
R158 ALCL
21
ALCL
R164 12DS
22 12DS
R165
43PV
23 43PV
12UL
24 12UL
R167
14PV
25 14PV
R168 12ST
26 12ST
R169 POWS
27 POWS
12PV
28
12PV
R171 TEMP
29 TEMP
GND
30
GND
D31
R173
D10
R156
C182 C163 C168
C57 R19
C164
C181