Voltage Diagram - Icom IC-821H Service Manual

SECTION 11 VOLTAGE DIAGRAM
USA
-+~~~~------KRI I
m:SS '
-+~~~~~----KR2
,
I
-4~~==~------KR3 I
I
I
I
~41
~
_K.F ____ K§.6 ______
~
AUS
0102
I SS3S5 KRI
_ +-~~~-+~?~=g~~5=c5
I
KR2 I
I
-+~~~~------KR3
I
I
-4~~==~------KR4
I
~
_K,F ____ K!6 ______
~
EUR
n~~55
I
-4~~==~~===CKRI I
I
I
-4~~==~------KR2
I
I
I
-4~~~+------KR3
I
I
I
KR4 ,
~
_"11 ____ 1(!6 ______
~
SWE
,
,
-4-+====-r------KRI I
I
-+~----~------KR2
I
ng~55
'
-4~====~~==~KRa ,
,
I
KR4 ,
~ _K.F ____ K!6 ______ ~
SW-A BOARD
Q137
or~Eu
.,
"' ;;;
N
;r
!;:! '" '"
'"
'"
'"
J2 Jl
I
I
KR4 KS5
[\11$1
[SUB] ,../
R5
KR3 KSB
560
rDl rDl
OS5
A4
KR2 Ft5
,../
560
OS4
~
LCOMP
19 0
I
LCOMP
~ ~ ~
KSI
,../
R3
KRI LAGC
LAGC
560
!~
OS3 KRI
R2
KS2 LPRF
9'-'
LPRF
~~
,../
560
KS2
~
KJ;
OS2
lN8 ~T
.~
lATT
lHB
,../
Rl
560
OSl
~
_ 0
~~~
to
OISP UNIT JI5
r~~
(PREAlIP!
SEE THE LEFT
,..----------
,
I
[l0101 [l0102
I
OSI-OS5 SEC1601C (,5)
I
I
,
KRI I
I
I
~Dl03 ~Dl04
,
SW-B BOARD
I
,
,
KR2'
I
'"
"'
...
,
~0105 ~O106
,
'"
'" '"
I
I
'" '"
'"
I
KR3 I
rD-t tOJ
~
I
I
~O107
,
I I
I
KR4 I
I
KS6
rDl~ ~
I
KS1
I
'-----------_.1
Jl
WID
JI8
KRI
oL-.:!..
KRI
(SCAN]
rEh KS5
..L!... KSS
IKii4
$,:
KR4
~
KS!
K 4 KS4
~
KR3
l{j KR
++
r,
KR2
-
•
*
JI
N N N N
CE:a::a::a::
~
J2 P2
JI
RI • 2~0 SSPO
M~
MSPD R3S lOOk
R: ·:220
I
PHG
PHG 0 01'
m~
(PHONE]
1
MSPJ
R4 220 PHCO L
SSPJ
>-
r--
~
.
MSPO
.., N
'" <>
MSPD
PHG
JACK BOARD
"'~ ~;;: '"
ifZ
... !Ii ~~
Jl [MIC!
VR BOARD (MA
I N)
LffllL
11
JI WI
J3 He
J6
Rl RV-285
oL-.:!.. ~
MICE
220_H
SQMV
. 0
L2
'~+
220 H
:-~ff, ..L!...
" ' 0
~
~n
MIC
""-
..L!...
b<
~
+9
I
I VAM
5
4
3
~
~
i!~ i~~
~
MIUD
: 1-. I
:;'"
i!i
SGlM
.~1'
1 uo
o- PT!
0 0
R2 1k
,
t!
~~I~ gg
0
_ _ J
o
0 0 0
. -0
o·
·0
VR BOARD
(SUB)
...
~
FRONT
1~~f~~
.....
Jl
we
J4 F+5
a:~
Rl RV-285
.,J:.2.,
..l
..L!...
SQSV
52 P2
J2
(~~ ..L!...
SEN2
..L!...
VRS
[MAIN DIAL]
~
,
SENI
*
~~ i~
F+5
I
1 I
f'
~~1'
1
r;
~r
R2 It
u
<; ~
WI
RIT BOARD
W2
Jl
we
J5
rfr
Rl RV-286
"
R276 47k
..l
~
SFTV
(~~
~
:IJ: R277 47k
RITV
I I
I
1. I
~
~ ~~r
+9
~~1'
I
J
!rr!
F+5
VRM
R2 It
"'
~
VAS
...
'"
0
<>
~
r-
r-
L-
'-- r---