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Jul. 2008
TENKEY BOARD
VOLTAGE LINE
Explanatory notes
to DISPLAY
board J1
to DISPLAY
board J2
to SW-C
board J1
to PBT1
board J1
to LED
board J1
2.2k
R1
4.7k
R2
15k
R3
6.8k
R4
390
R51
390
R52
390
R53
390
R54
390
R55
390
R56
390
R57
390
R58
0.1
C1
390
R64
390
R59
0.1
C2
390
R62
2.2k
R5
390
R60
15k
R7
390
R66
4.7k
R6
390
R63
6.8k
R8
390
R65
390
R61
390
R72
390
R67
0.1
C3
390
R70
2.2k
R9
390
R68
15k
R11
390
R74
4.7k
R10
390
R71
6.8k
R12
390
R73
390
R69
J2
J5
J3
BU2099FV
IC1
1
VSS
2
NC
3
DATA
4
CLOCK
5
LCK
6
Q0
7
Q1
8
Q2
9
Q3
10
Q4
11
Q5
12
Q6
13
Q7
14
Q8
15
Q9
16
Q10
17
Q11
18
SO
19
OE
20
VDD
J1
BU2099FV
IC2
1
VSS
2
NC
3
DATA
4
CLOCK
5
LCK
6
Q0
7
Q1
8
Q2
9
Q3
10
Q4
11
Q5
12
Q6
13
Q7
14
Q8
15
Q9
16
Q10
17
Q11
18
SO
19
OE
20
VDD
0.1
C5
0.1
C4
LS9J2M
S11
LS9J2M
S12
LS9J2M
S13
LS9J2M
S14
LS9J2M
S15
LS9J2M
S16
LS9J2M
S17
LS9J2M
S18
LS9J2M
S19
LS9J2M
S20
LS9J2M
S21
LS9J2M
S22
J6
J4
J7
RIT SENSOR
SUB SENSOR
TENKEY BOARD
S1
LS8J2M
S2
LS8J2M
S3
LS8J2M
S4
LS8J2M
S5
LS8J2M
S6
LS8J2M
S7
LS8J2M
S8
LS8J2M
S9
LS8J2M
S23
LS8J2M
S24
LS8J2M
SML-512DW
DS1
SML-512DW
DS2
1.5k
R75
1.5k
R76
MLCD
SPLD
MRXD
MTXD
STXD
TKYD4
TKYD3
TKYD2
TKYD1
SLCD
SRXD
LDAT
LCK
LST1
LOE
LOE
LOE
MPCD
SPCD
SAPD
MAPD
LOE
LOE
LOE
LST1
LCK
MAUD
TKYD1
TKYD2
TKYD3
MPCD
SPCD
SNCD
MNCD
SAUD
MAUD
SAPD
MAPD
MRXD
MTXD
SPLD
MLCD
STXD
SRXD
SLCD
KI3
KI3
KI2
KI2
KI0
KI0
KI1
KI1
MTSK
MTSK
STSK
STSK
MSPK
MSPK
SSPK
SSPK
MLCK
MLCK
SLCK
SLCK
SATK
SATK
LCK
LOE
LST1
LDAT
KI6
TKYD4
KI5
SSB
SSB
SSA
SSA
RSB
RSB
RSB
5V
5V
5V
5V
RSA
MNCL
MNCL
MAPL
MNCL
MAPL
MAPL
MNCL
MAPL
MP1A
MP1A
MP1B
MP1B
3R3V
3R3V
3R3V
3R3V
3R3V
3R3V
3R3V
MP2B
MP2B
MP2B
MP2A
MP1A
MP1B
MP2B
MP2A
MP2A
MP1A
MP1B
MP2A
GND
GND
GND
GND
SP1A
SP1A
SP1B
SP1B
SP2A
SP2A
SP2B
SP2B
SNCL
SNCL
SAPL
SAPL
PITL
SP1A
SP1B
SP2A
SP2B
SNCL
SAPL
PITL
PITL
SP1A
SP1B
SP2A
SP2B
SNCL
SAPL
PITL
MP1A
MP1B
MP2B
MP2A
MAPL
MNCL
SP1A
SP1B
SP2A
SP2B
SNCL
SAPL
PITL
GND
GND
GND
GND
GND
KI4
SAUD
MNCD
SNCD
SUBD
MIND
UPK
DWK
VMK
MPWK
MWK
MPRK
XFCK
MINK
MINK
SUBK
SUBK
CHGK
CHGK
EQRK
KI6
KI5
3R3V
3R3V
3R3V
3R3V
3R3V
3R3V
GND
GND
KI4
KI5
KI4
KI4
UPK
UPK
UPK
DWK
DW
K
VMK
VMK
VMK
MPWK
MPWK
MWK
MWK
MWK
VMK
MWK
MPRK
MPRK
XFCK
XFCK
MINK
MINK
SUBK
SUBK
CHGK
CHGK
EQRK
EQRK
DWK
MPWK
MPRK
MPWK
MPRK
XFCK
MINK
SUBK
CHGK
SUBK
CHGK
EQRK
EQRK
MIND
MIND
LDPS
LDPS
LDPS
LDPS
LDPS
LDPS
LDPS
LDPS
LDPS
SUBD
TKYD1
TKYD2
TKYD1
TKYD1
TKYD2
TKYD2
TKYD3
TKYD3
TKYD3
TKYD4
TKYD4
TKYD4
MIND
LDPS
SUBD
MIND
MIND
LDPS
LDPS
LDPS
LDPS
LDPS
LDPS
LDPS
SUBD
SUBD
1.8(1)
10(4)
21(7)
GENT(.)
3.5(2)
50(0)
24(8)
14(5)
7(3)
F-INP(ENT)
28(9)
18(6)
SUB
MAIN
UP
DOWN
V/M
MP-W
MW
MP-R
CHANGE
XFC
SAUD
MPCD
MAPD
MAUD
MNCD
SAPD
SPCD
SNCD
MTXD
SPLD
MRXD
SRXD
STXD
SLCD
MLCD
GND
LDAT
LCK
LOE
LST1
RSA
RSA
RSB
5V
GND
RSA
SSB
5V
GND
SSA
SSB
5V
GND
SSA
M=S
ON
EQRK,SUBK,CHGK
MWK,MPRK,XFCK,MINK,
UPK,DWK,VMK,MPWK,
OFF
0.00V
3.28V
5V
A,C
turn left
turn right
B,D
A,C
B,D
0V
5V
0V
5V
0V
5V
0V
OFF
1.8 (1)
10 (4)
21 (7)
3.30V
0.000V
0.803V
1.665V
GENT(.) 2.51V
range : input impedance
200mV : 100M
Ω
2V : 11M
Ω
20V,200V,1000V : 10M
Ω
MESUREMENT CONDITIONS
voltage at RX
frequency : 14.1 MHz
mode : J3E(USB)
Digital tester
ANT(RX) : no input
4.88V
3.30V
OFF
1.8 (1)
7 (3)
18 (6)
3.30V
0.000V
0.812V
1.67V
F-INP(ENT) 2.52V
OFF
3.5 (2)
14 (5)
24 (8)
3.30V
0.000V
0.808V
1.664V
50 (0)
2.52V
D
C
B
A
61
Jul. 2008
Summary of Contents for IC-7800
Page 1: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 65 VOLTAGE DIAGRAM 67 Dec 2009 ...
Page 79: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 60 VOLTAGE DIAGRAM 64 Feb 2009 ...
Page 157: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 57 VOLTAGE DIAGRAM 59 Aug 2008 ...
Page 245: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 57 VOLTAGE DIAGRAM 59 Jul 2008 ...
Page 333: ...THE TRANSCEIVER i7800 SERVICE MANUAL S 14015HZ C1 2 Mar 2006 ...
Page 555: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14015HZ C1 2 C 2004 2006 Icom Inc ...