Icom IC-2800H Service Manual page 44

SECTION 11 VOLTAGE DIAGRAM
CONTROL UNIT
1 8
2 7
R250 1M
3 6
4 5
C107
IC19 0.01
TC7W04FU X3
CSTCV26.25MXJ040
R271 C158 C159
0.01 0.01
EP2 56
MMZ1608Y102BT
C148 D10
0.01 MA8030 H
5.21
R220 R206 R215 R217
R208
15k 15k 15k 15k 15k
+
MD15
MD0 C103 C128
0.01
MD14 33
R232 R233
100k 100k
97 64 MD1
COREVDD MD1
98 63 MD13
DACP0 MD13
99 62 MD2
DACWR# MD2
100 61 MD12
DACRS0 MD12
101 60 MD3
DACRS1 MD3
102 59 MD11
HRTC MD11
103 58 MD4
VRTC MD4 IC9 LH61665AS-60A
104 57 MD10
VSS MD10
105 56 MD5 1
CLK I MD5 VCC
106 55 MD9 MD0 2
107 SUSPEND# MD9 54 3 I/O1
MD6 MD1
108 TESTEN MD6 53 MD8 MD2 4 I/O2
BUSCLK MD8 I/O3
109 52 5
MD7 MD3
110 VSS MD7 51 6 I/O4
MD4
111 IOVDD VSS 50 7 I/O5
MD5
112 AB20 IC8 LCAS# 49 8 I/O6
MD6
113 AB19 SED1354F0A UCAS# 48 9 I/O7
MD7
114 AB18 WE# 47 10 I/O8
A17
115 AB17 RAS# 46 R231 NC
A16
116 AB16 IOVDD 45 100k
A15
AB15 MA9
A14 117 44 13
AB14 MA11 VCC
A13 118 43 MA8 14
AB13 MA8 UW
A12 119 42 15
AB12 MA10 LW
A11 120 41 MA7 16
AB11 MA7 RAS
A10 121 40 MA0 MA0 17
AB10 MA0 A0
A9 122 39 MA6 MA1 18
AB9 MA6 A1
A8 123 38 MA1 MA2 19
AB8 MA1 A2
A7 124 37 MA5 MA3 20
AB7 MA5 A3
A6 125 36 MA2 MA4 21
AB6 MA2 A4
A5 126 35 MA4 22
AB5 MA4 VCC
A4 127 34 MA3
AB4 MA3
A3 128 33
AB3 COREVDD
C104
0.01
R178 100k
LEFT SIDE
R285 10k
R287
10k
R288 R286
15k 15k
L4
10 H
L5 L3
DS1 EDTCA22QB0 J1 L1 L2
10 H 10 H 10 H 10 H
STH1 R3 100
24 OEH
23 Q2H R5 100
22
CPH1
21
CPH2 R7 100
20
CPH3
19
GND
18
B
17
G R1
16
R 4.7k
15
VB
LCD 14
RL
13 C17 C18 C19 C20 C21 C22
STH2
12 47p 47p 47p 47p 47p 47p
VEE
11
VCOM
10
VGH R9 100
9
VDD R10 100
8
STV2
7
OEV R11 100
6
CPV
5
U/D
4 R13 100 R12 100
STV1
3
VSS
2
VGL
1
+
+ + + +
IC22 TA78L05F
C1 C2 C3 C4 C5 C6 C7 R2 C8 C9 C10 C11 C12 C13 C14 C15 C16
10 0.1 10 0.1 10 0.1 0.1 4.7k 10 0.1 10 0.1 47p 47p 47p 47p 47p
O I
Q1 Q3
13.0
G 2SC4081 R 2SA1576 R
C157 5.05
0.22
R31 R32 R35
100 22k
82k
1.4
C40
1
0.86 0.34
–3.1 R276
5.13
0.9 47k
R34 R37
R274
–14.5 R33 22k 330k 390
100 R275
R277
47k 47k
Q2 2SA1576 R Q4 2SC4081 R D11
MA8030 H
R280
47k
Q5 2SC4081 R Q7 2SA1576 R
–7.5 R39 R42 L15
R38 –14.5 100k C75 + C76
100 22k 10 H C150
0.1 10 R60 0.1
R279 100
47k
–14.7
C41 R61 C151
0.1
44 1 100
VSS
43 MD15 + R62
L14
I/O16 42 C73 C74 10 H 100
MD14 –8 –8 0.1 10
I/O15 41 MD13 R41
I/O14 R278 R44 C152
40 47k 22k 47k
MD12 R40 0.1
I/O13 39 100 C185
MD11
I/O12 38 220p
MD10
I/O11 37 Q6 Q8 C133
MD9 2SA1576 R 2SC4081 R
I/O10 36 R 0.1
MD8
I/O9 35 C134
NC G 0.1
C135
B 0.1
32
VSS R238 10k
31
CAS R239 10k
30 FPDAT0 R242 10k
OE
29 FPDAT1 R240 10k R243 10k C189
NC FPDAT3 220p
28 JP1 FPDAT2 R246 10k
NC FPDAT4 R244 10k
27 MA8
NC FPDAT6 R247 10k
26 MA7 R259 R241 10k FPDAT5
A7 10k FPDAT7 R248 10k C190
25 MA6 R235 C136 R260 R245
A6 390 220p
24 MA5 150p 10k 10k FPDAT8
A5 C137
23 R236
VSS 390 150p R261 R249
10k 10k
C138
R237 150p
390
JP2
R284 3.15
100
W12
W11 D12
MA8033 L
C57 C31
0.1 R26
R112 0.1 L7 50k R27 L9
1 8 10k 10 H 1k
10 H
2 7
3 C26 C30
6 39p
C33 + D2 560p
4 5 C56 C34 R25 C35 + C36
270p 0.1 10 1SV282 27k 0.1 10
R4 100 C27
0.1
IC7 TC7W14FU
R6 100
R17
R14 C23 R16 68k L10
13 48 27k 10k
R8 100 0.001 1.71 10 H
14 U/D VSS 47 D1 R18
1M
POL VDD 1SS355
15 46 5 R20
INT/EXT PN1 1 68k R24
16 45
CPV HPOS1 W14 4 + 4.7k
17 44 5.11
OEV3 IC1 HPOS2 3
18 43 C25 –
OEV2 MN83951 HPOS3 W10 0.1
19 42 1.81 2
OEV1 HPOS4 R21 R22
20 41 22k 47k R23 C29
STV UONS IC2 0.1
21 40 L8 TC75S51F 2.2k
OEH HDOT1 2.7 H
22 39 1.72
OH RESET
23 38
STH VSS CP1 C28
24 37 0.1
CPH4 VCOO
L16
R15 4.88 R292
470k 10 H 3.3
W4 C77 + C78 C194 C193
D14
0.1 10 220p MA8047 M 220p
C24 Q11
120p
2SC4081 R
3.26 R108 L13
5.6k + 10 H
C53
C52 10
C54 0.1
R106 4.7
560
C55 R290
C92 10 1.5k R164
470p
R100 150
R110
150k 150
R109
2.62 R107
680 10k
C177
220p C146
0.01
IC20
TC7S08FU
C178 1 5
2
220p
3 4
C70 C183
0.01 220p
IC6 M52338FP
R273
2.7k
17 16
B OUT GND IC16
18 15
SUB BIAS B BIAS COUNT M52042FP : Other
19 14
G OUT COM OUT C179 M52045FP
20 13 : [EUR, ITA]
SUB BIAS R COM GAIN 220p
21 12 1 24
R OUT FRP2 IN C176 V IN VCC
C184 22 11 2 23
FRP1 IN VEE 220p SYNC IN VCXO OUT
220p 23 10 3 22
BRIGHT VCC2 ACC FIL VCXO MON
24 9 W6 4 21
CONTRAST CP CONT SYNC OUT VCXO IN
25 8 5 20
GAM1 HD IN HD COLOR
26 7 6 19
GAM2 SW C86 PED CAP TINT
27 6 C91 7 18
EXT IN R CLAMP B 0.1 0.1 C TRAP KILLER FIL
28 5 8 17
SUB CONT R MAIN IN B Y OUT APC FIL
29 4 C85 C90 9 16
EXT IN G CLAMP G CONT S.W.
30 3 0.1 0.1 10 15
SUB CONT B MAIN IN G R OUT KILLER OUT
31 2 C84 C89 11 14
EXT IN B CLAMP R G OUT PIX CONT
32 1 0.1 0.1 12 13
VCC1 MAIN IN R B OUT GND
R291 22
R257
R84 R87 R169
4.67 R63 39k R167
C191 2.7k 33k 220 D13 C44 56k 68k
4.7
220p MA8043 L
4.26
+
R89 C83 R65 C67 C186 C196 C199 C181 C200 R168 C131 C132
C71 C80 68k 0.01 C142 R258 R51 0.01
0.01 33k 0.01 220p 220p 220p 220p 220p 47k 0.01
0.01 0.01 47k 1M
C130
C188 R86 C187 C81 C82 C87 R170
0.01 39k
220p 82k 220p 0.01 0.01 0.01
BRITV
CONTV R174
+
R256 C102 3.3k
100k 10
C72 C79 R173
220p + 470
220p R255 C101 D9
R254 R289
15k 10 1SS355
100k 15k
PA6 PA7 PA5 PA4
CENTER
5.2
13.06
IC17 TA78L05F 12.6
5.16 Q19 Q20
L18
DTC144EU 2SA1362 GR SLF6028T-101MR42 R297
L19 680 12.08
O I R294 678XN-1369 6.56 12.46
Q21
G 2.7k
R165 2SB798 DK
8.2k
C122 R296
+ C127 1 8 R28
R295 33P 2.2k 1
0.001 4.7k 2 CS CD 7
C121 3 ES SI 6
12.39
C129 C149 0.033 4 CT V+ 5
0.001 10
IC15 GND INVIN
–16.0
+ TA79L15F 0.6
C123 C37 IC3 M5291FP
33 12.6
C192 0.001 –15.8
220p
O I R29 C201
–0.36 –0.36 –16.9 33k 2.2
Q15
IC23 TA78L05F Q14 G
5.13
2SC3647 S 2SC3647 S + D3
+
C125 SB10-05PCP
C124 47 C126 C38 R30
O I 0.001 0.001 L11 470k
SLF7032T-681MR16-2 47
G
+ C155
C156
0.1 10
–14.7
D0
D1
D2
D3
D4
D5
5.22
D6
R265
D7
220k
R266 R264 R180 R181 R182 R183 R184 R185 R186 R187
220k 100k 220k 220k 220k 220k 220k 220k 220k 220k
R188 220k
1 20
2 ENA VDD 19
R189 220k
3 A1 ENB 18 CS
YB4 YA1
4 17
A2 B4 R190 220k
5 16 WR
YB3 YA2
6 15 R191 220k
A3 B3
7 14 RD
YB2 YA3
R270 8 13 R192 220k
9 A4 B2 12
1k YB1 YA4
10 11
VSS B1 R193 220k
C147
0.01 R194 220k
C145 IC21 TC74AC244F
3p
R195 220k
21
VCC PA7/TP7/TIOCB2
A0 22
23 P10/A0 PA6/TP6/TIOCA2
A1
24 P11/A1 PA5/TP5/TIOCB1
A2 P12/A2 PA4/TP4/TIOCA1
R59 X1 A3 25
560 : Other P13/A3 PA3/TP3/TIOCB0
470 : [EUR], [ITA] CR-640 : Other A4 26
CR-641: [EUR], [ITA] P14/A4 PA2/TP2/TIOCA0
A5 27
P15/A5 PA1/TP1/TCLKB
A6 28
P16/A6 IC10 PA0/TP0/TCLKA
A7 29
30 P17/A7 HD6433032SK21F
C153
A8 31 VSS
18p : Other P20/A8
12p :[EUR], [ITA] A9 32
P21/A9
A10 33
P22/A10
R283 A11 34
8.2k : Other P23/A11
A12 35
3.9k : [EUR], [ITA] P24/A12
A13 36
37 P25/A13
C45 A14 P26/A14
C154 A15 38
180p : Other 0.01 : Other P27/A15
A16 39
100p : [EUR], [ITA] 0.068 : [EUR], P50/A16
[ITA] A17 40
P51/A17
R196
220k
R197
220k
C58
0.1 R198
220k
C141 R58 C59 R199
1 15k 470p 220k
R200
220k
R201
220k
R202
220k
R203
220k
R204
220k 5.22 5.21 R272
10k
R205 R267
220k R300 R299
220k
R262 1.5k 1k
C105 IC11 S-80945ANMP-DD9
220k 0.01 JP3
1 5
X2
2 OUT CD
VDD CR-566
3 4 R179
VSS NC C119
A18 47k
0.01 C143 C144
12p 12p
0.15
C120
WAIT
0.01
J4
EXT V
VIDEO
IN
E
CFL
J3 DS2 HMBS 3 A1W 83N/AZ Assy
CFL+
1 1
NC
NC 2 2
3 3
4 4
CFL–
5.22 W13
Q18 C164
C169 5.11
IC14 TA78L05F 2SB1132 R 220p 220p
R293
J2
4.7
12.5 O I HV 6
TDATA 5
R158 C112 C113 G RDATA TO
13.01 10k 0.001 0.001 + C116 + C115
GND 4 MAIN UNIT
C114 0.001 10 3 J3
10 R163
R301 10k SP
Q12 12.94 2
8.2 SPE
2SC4081 R 1
Q17
Q16 SP1
R302 DTC144EU R160 VS-57-0814
8.2 R159 4.7k C165 C117 J5
2SA1362 GR 12.34
4.7k 220p 47p SP
1 1
SPE
2 2
+ C166
C39 R282 C118 C160
8.2 47p 0.1 220p
2.7k
C167 C168
220p
220p
R281 4.7k
P73 UVOL
R146 R145
C97 47k 10k
0.0047
USQL
P72
C175 R149 R148
C96 47k 10k
220p 0.0047
R263
47k PB7
R123 R124
47k
47k S11
R134 S11 EVQ-VENF01
1k 1
LRES PA2 A
PA3 B 2
NC 3
C172 COM 4
C94 C95 C174
220p 47p 47p 220p
UDIAL
R157 R162
100k ENCODER
4.7k
S1
R161 P74
F-1
15k Q13
2SA1576 R R113
C98
2.2k
R298 0.0047 S2
10k F-2
R114
R177 47k 4.7k
S3
F-3
R115
R116
80 R127 1k PA7 6.8k 15k S4
79 R128 470 PA6 F-4
78
R129 10k PA5
77
R130 1k PA4
76 R131 1k PA3
P75 S5
75 R132 1k PA2 F-5
74 R133 1k PA1
73 R136 1k PA0 C195 C99 R117
2.2k
72 220p 0.0047 S6
P83/IRQ3 71
F-6
P82/IRQ2 70
P81/IRQ1 C197
69 R137 1k P80 R118
P80/IRQ0 220p
68 4.7k
AVCC S7
67 F-7
VREF
66 R135 1k P77
P77/AN7 R119
65 R120
P76/AN6 64 R140 1k 6.8k 15k
P75/AN5 P75 S8
63 R141 1k P74
P74/AN4 R121 F-8
62 R142 1k P73 47k
P73/AN3
61 R143 1k P72
P72/AN2
S9
P80
R176 1k P71 POWER
R175 1k P70 R122 C173
47k
220p
R268 47k
S10
P77
CHANGE
R269 47k
W8
P71 VVOL
R152
C108
0.0047 47k R151
10k
VSQL
P70
R155
C109 47k R154
0.0047 10k
R126 R125
47k 47k
S12 S12
EVQ-VENF01
PA0 1
A
PA1 2
B
3
NC
C110 C111 4
COM
47p 47p
VDIAL
ENCODER
RIGHT SIDE
11 - 1