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IC-7800
Service manual addendum
Icom IC-7800 Service Manual Addendum page 218
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Instruction manual
(230 pages)
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Service manual
(216 pages)
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Manual
(27 pages)
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Contents
Table of Contents
Bookmarks
Advertisement
Aug. 2008
TENKEY BOARD
Jul. 2008
TENKEY BOARD
J7
GND
RSA
RIT SENSOR
RSB
5V
B
J6
GND
SSA
SUB SENSOR
SSB
5V
J1
3R3V
KI6
KI5
KI4
GND
GND
SSA
SSB
RSA
RSB
UPK
DWK
VMK
to DISPLAY
MPWK
board J1
MWK
MPRK
XFCK
MINK
EQRK
SUBK
CHGK
LDAT
LCK
LOE
LST1
LDPS
J2
5V
MAPL
MNCL
MP2B
MP2A
MP1B
MP1A
SP1A
SP1B
SP2A
SP2B
to DISPLAY
SNCL
board J2
SAPL
PITL
SATK
SLCK
MLCK
SSPK
MSPK
STSK
MTSK
KI0
KI1
KI2
KI3
J3
3R3V
KI3
KI2
KI1
KI0
MTSK
STSK
MSPK
SSPK
MLCK
SLCK
SATK
GND
to SW-C
MPCD
board J1
SPCD
MAPD
SAPD
MAUD
SAUD
MNCD
SNCD
LDPS
PITL
SAPL
SNCL
SP2B
SP2A
SP1B
SP1A
J4
MP1A
MP1B
MP2A
MP2B
GND
to PBT1
GND
board J1
GND
MNCL
MAPL
3R3V
J5
LDPS
MTXD
MRXD
MLCD
SPLD
to LED
STXD
board J1
SRXD
SLCD
GND
D
C
turn left
5V
5V
GND
A,C
A,C
RSA
0V
0V
RSB
5V
5V
5V
B,D
B,D
0V
0V
A
3.30V
GND
SSA
SSB
5V
3R3V
3R3V
KI6
KI5
KI4
GND
GND
UPK
DWK
VMK
MPWK
MWK
MPRK
XFCK
MINK
EQRK
SUBK
CHGK
LDAT
LCK
LOE
LST1
LDPS
MAPL
MNCL
4.88V
MP2B
MP2A
MP1B
MP1A
SP1A
SP1B
SP2A
SP2B
SNCL
SAPL
PITL
TKYD1
TKYD2
TKYD3
TKYD4
SUBD
MIND
LDPS
3R3V
MPCD
SPCD
MAPD
SAPD
MAUD
SAUD
MNCD
SNCD
LDPS
PITL
SAPL
SNCL
SP2B
EQRK
SP2A
XFCK
SP1B
SP1A
MP1A
MP1B
MP2A
MP2B
MNCL
MAPL
3R3V
LDPS
MTXD
MRXD
MLCD
SPLD
STXD
SRXD
SLCD
turn right
OFF
3.30V
OFF
3.30V
1.8 (1)
0.000V
3.5 (2)
0.000V
10 (4)
0.803V
14 (5)
0.808V
21 (7)
1.665V
24 (8)
1.664V
GENT(.) 2.51V
50 (0)
2.52V
3R3V
KI5
KI4
S11
S15
LS9J2M
LS9J2M
R51
R59
390
390
R52
R60
390
390
3.5(2)
1.8(1)
TKYD1
S12
S16
LS9J2M
LS9J2M
R53
R61
390
390
R54
R62
390
390
14(5)
10(4)
TKYD2
S13
S17
LS9J2M
LS9J2M
R55
R63
390
390
R56
R64
390
390
21(7)
24(8)
TKYD3
S18
S14
LS9J2M
R57
R65
LS9J2M
390
390
R58
R66
390
390
GENT(.)
50(0)
TKYD4
TKYD1
TKYD2
TKYD3
TKYD4
SUBD
MIND
LDPS
MWK
VMK
VMK
UPK
S3
S1
LS8J2M
LS8J2M
V/M
UP
MPRK
MPWK
MPWK
DWK
S2
S4
LS8J2M
LS8J2M
MP-W
DOWN
SUBK
SUBK
CHGK
CHGK
LDPS
MIND
DS1
SML-512DW
R75
1.5k
MINK
MINK
S8
LS8J2M
S7
LS8J2M
MAIN
UPK,DWK,VMK,MPWK,
MWK,MPRK,XFCK,MINK,
EQRK,SUBK,CHGK
EQRK
ON
0.00V
OFF
3.28V
S9
XFC
LS8J2M
M=S
OFF
3.30V
1.8 (1)
0.000V
7 (3)
0.812V
18 (6)
1.67V
F-INP(ENT) 2.52V
3R3V
KI4
S19
LS9J2M
R67
390
R68
390
7(3)
TKYD1
S20
LS9J2M
R69
390
R70
390
18(6)
TKYD2
S21
LS9J2M
R71
390
R72
390
28(9)
TKYD3
S22
LS9J2M
R73
390
R74
LOE
390
C4
0.1
F-INP(ENT)
TKYD4
IC1
BU2099FV
1
20
VSS
VDD
2
19
NC
OE
LDAT
3
18
DATA
SO
4
17
LCK
CLOCK
Q11
SUBD
LST1
5
16
LCK
Q10
MIND
MTXD
6
15
Q0
Q9
MRXD
7
14
LDPS
Q1
Q8
MLCD
8
13
Q2
Q7
MWK
SPLD
9
12
Q3
Q6
STXD
10
11
Q4
Q5
S5
LS8J2M
MW
MPRK
S6
LOE
LS8J2M
C5
0.1
MP-R
IC2
BU2099FV
1
20
VSS
VDD
2
19
NC
OE
3
18
DATA
SO
LDPS
LCK
4
17
CLOCK
Q11
MIND
LST1
5
16
LCK
Q10
6
15
DS2
SUBD
MPCD
Q0
Q9
SML-512DW
SPCD
7
14
Q1
Q8
MAPD
8
13
R76
Q2
Q7
9
12
SAPD
Q3
Q6
MAUD
10
11
1.5k
Q4
Q5
SUBK
S23
LS8J2M
SUB
CHGK
S24
LS8J2M
MESUREMENT CONDITIONS
Explanatory notes
voltage at RX
frequency : 14.1 MHz
mode : J3E(USB)
CHANGE
ANT(RX) : no input
VOLTAGE LINE
Digital tester
range : input impedance
200mV : 100MΩ
2V : 11MΩ
20V,200V,1000V : 10MΩ
61
3R3V
LOE
3R3V
LOE
TKYD4
TKYD3
TKYD2
TKYD1
SLCD
SRXD
LOE
3R3V
LOE
MIND
SUBD
SNCD
MNCD
SAUD
Table of
Contents
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Page
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