Icom IC-821H Service Manual page 95

011 12 (USA. AUS on I
y)
ACSI
W3 (USA. AUS on I y)
ACS2
GND
JI
- LCTA
__ SD2
__ STPD
__ SCK2
___ STPA
o
o
___ STPB
___ GND
----'-~;2/LCTB
JII
XST8
SOl
SCKI
XPOE
AFMM
AFMS
VBUSY
(FRONT) EP3 (EUR. SWE on I
y)
PLL
UNIT
ADRF
ADIINO
ADSNO
ADIICII
o
ADSCM
OADIISII
ADSSM
MAIN UNIT
o
EDOT
o
EDSH
EKEY
TSQLM
TSQLS
o
UHON
o
CI-V
ALCI
o
MIUD
SEND
POCO
MIOF
VRM
VRS
GND
J3
13. B
13. 8
13. 8
+9
11+5
GND
TXSW
J22
MSPJ
PHCO
SSPJ
MSPO
PHG
SSPO
(FRONT) PI (PA) PI
WI3
BILO
J3
B2L~ J;:I
¥
GNDcr-
WII
AILO
W17
30. 2M
J2
-5
1eJ-------,
o
+9101------.1
13. 8 101------.1
o
GND
IQI-----.j
J2 (R;:) PI
jJ4
013.8
o
o
11+5
o
GND
o
MT9A
o
SR9A
o
MR9A
e
AHA
RF-A UNIT
J6 (PA-A)WI9
RXRA 0
J7
TXRA 0)
JI
IFMA
n
E
if----1
J2
(PA-A)WI8
~
IFSA
0
:31 (PLL)WII
AI LO
I
=C!~:J-------,
~----------------------~
lJB
~ 013.8
o
~
011+5
~
OGND
~
0 MT9B
~ 0 SR9B
~ 0 MR9B
P3 J6
~
0) B2LO
RF-8 UNIT
(PA-B) P2
~
J:t
RX 0
J3
TX 0
~
(PA-B) PI
JI
I FMB
Iet-~IT------,
i2~~
IFS~~~
----1:P= '----
~e
J: :::0
~----------------------------~
I FSB
J
:
5
i
(R~
P2
IFMB
~ =-r-~-+-------------------------------~
J9 (PLL) P2
13.8
e
+90
GND 0 0
GND 0 101----1
GND 0 0
-5 0 101----'
J24
~_)W17
30.2M 0
~
J4
IFSA 0
JI
IFMA 0
(RF-A) P2
(R~PI
(PA)
SPI
U(]
JIO
AIC2
e
ICI 0
BIC20
FORA 0
FOR80
SNDB 0
PAT90
PBT90
GNDA 0
P6 JI
r-~~I"
e
GNDA
o
AIC2
~ 0 PREA
o
FORA
o
PAT9
P5 JI
I--+---+el e
GND8
o
PBT9
o
ICI
o
FORB
o
BIC2
~~ OPREB
(PA)
J2
nft1
~
J5 J4 J6
WI9 WI8
RXRA TXRA
5;
iii
~ ~
MFI
~
.~
PA
PA-A UNIT
~~o----+o
h h n
(PA)
JI
[430M ANT]
W3 W4 WI W2
RX TX HVF
0-------'
PA-8 UNIT
HV
EPI
GND
(PA) J7
EP2
(PA)
(PA)EPI
(USA. AUS on I
y)
~~~
.c;
P3 c
~~~
~:<v ®-~
,.!!..~®;~
~
~
;
EP2
o-J~3~
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ -,
(PA) L.. _ _ _ _ _ _ _ _ _ _ ---l (PA)
SI
L.,.---~
11 - 1