Icom IC R8500 Service Manual Addendum page 107

Sep. 2010
1
2
3
4
5
6
R248
3.83V
OPEN 7.88V
2.2k C210 10
7 CLOSE 0V
+
Q47
R262
R249 2SC4081 IC20 M5282FP
10k +
10k
1 10
VCC2 VCC
2 9
IN+ VCAOUT
3 8
Q46
IN- CTL
DTA114EU 4 7
OUT VCAIN
5 6
GND NC
BEEP
R253
100k 6.22V C214 4.7
+
+
C206
3.12V
0.1
Q73
VOIC 2SK2036
R255
R259 R486
Q48 +
47k
22k 100k
2SC4081
C208
8
IC42
0.1
3.63V S-8054ALB-LM
3.83V
+5
O I
+
R325
G
100
4.94V
IC29 BU4053BCF
9
1 16
Y1 VDD
2 15
Y0 Y
3 14
Z1 X
4 13
Z X1
5 12
IC30
Z0 X0
BU4053BCF
6 11
!!0
INH A
7 10 1 16
VEE B Y1 VDD
8 9 2 15
VSS C Y0 Y
7.78V
3 14
Z1 X
4 13
Z X1
!!1
5 12
Z0 X0
6 11
!!2
INH A
7 10
APF ON :0V
VEE B
OFF:7.78V
8 9
VSS C
!!3
!!4
!!5
!!6
!!7
!!8
!!9
R292 100k
IC35 uPD4081BG
5.0V
1 14
" @0 2 13
@1 3 12
P27 4 11
TXD 5 10
R516 3.3k
(EUR,FRA ONLY) P34 6 9
7 8
R517 3.3k(USA,
FRA,DEN ONLY) P35
R518 3.3k(USA,
EUR,AUS ONLY) P36
" @2
RXD
@3
W13
7.9V
IC23 TA7808F
@4
+8
@5
O I
-13.42V -8.1V
+
R290 IC26 AN79L08M R291 G
10
27
@6 -8
I O
+ + + +
G
4.94V
IC17 TA7805FNQ
+5
C259
D66 1SS355 O I
47 +
G
36.5V 23.8V
R289
C253 R288 IC25 AN78L24M
10
33 47
+24
I O
+ + + +
5.0V
G IC38 TA7805F NQ
L+5
O I
@7
+
G
@8
2 3
D39
1SS272 1 4
7.84V
Q51
1 4
D40 2SC2873 L45 IC24 TA7808F NQ
2 3
7A06L-101K
1SS272
@9 2
O I
10
#0 Q52 +
3
G
2SC2873
6 4
7 5
9 1
L45
7010-2N-1768
#1
#2
#3
#4
12.97V
6.9V IC21 uPC1214H L39
LW-15 Q71
2A1736
R265
13.5V
100 C215
R274 R510
0.22
10k 2.7
1 2 3 4 5 6 7 8
+ +
6.83V
AF MIN 0.5V +
1.2V
Q72
AF MAX 2.1V +
C226
2SK2036
+ + 470
1.8V
R485
2.97V
220k
R273
10k
Q49
C218 2SC4081
R455
0.1
C220
1k(EUR,AUS,
0.1 FRA,DEN ONLY)
1.39V
4.94V
IC39 CAT5113VI-50-GT3
PB2 R474 1k
/INC R472 1k 1 8
INC VCC
U/D R473 1k 2 7
+
U/D CS
3 6
VH VL
4 5
GND CW
C316
1
R366 2.7k
R482
100
7.81V 4.8V
C315
R301 C276 R311
1
56k R408 1M 0.001 150k IC31d
R307
R305 NJM2902V
4 39k 150k
2 6 9 13
11
- 1 - 7 - 8 -
3 5 10 12
+ + + +
IC31a
11 IC31b IC31c
NJM2902V
NJM2902V NJM2902V
Q2L
-7.76V
FL+8 FL-8
R309 82k
Q2H
+
R310 15k
MAIN-A UNIT
IC27 TC7W04F
9.98V
+
1 8 IC28
C269
DS14C232TM
10
7.37V
2 7 1 16
+
C1+ VCC 5.0V
2.37V 2 15
V+ GND
3 6 3 14
C1- T1O
-4.72V 4 13
C2+ R1I
4 5 5 12
+
C2- R1O
6 11
C267
V- T1I
7 10 DTX
10
5.23V T20 T2I
8 9
-9.96V A2I R2O
DRX
+
Q53 XP4601
1 6
R296 33k
2 5
3 4 D43
1SS355
12.43V
AC ADAPTOR R280 IC22 PQ30RV31
5.0V 5.0V
USED 1k
16.3V
C387
13.7V (AC ADAPTOR USED)
47p
4 3 2 1
+
+
R281 27
R286 56
12.25V
R244 27
F2 F2
+
L44 F1
R245 27
SK-17P-070-110
C389
47p
D56
11.39V 1SR154-400
R357
47
+
13.51V
RL1
L48
Q50
7A06L-101K
2SC4081
R283
J12
10k
GND
+ +
+5
2
I C 3
1
R16
J32
3
DISC
AOUT 100K
NJM2902V
AGC
J18
AOUT
AGC OUT
J19
6
I C 3
Q1
PH
7
PHG
5
EXSP FROM
JACK D TC144EU
PHG
UNIT NJM2902V
REC
J4
RECG
J20
P1
INSP INSP SP1
NC NC
+
SPE SPE
-
MIX-A UNIT
COVER
J 2
C28
T M P - J 0 1 X - V 6
J21
EXSP 470P
INSP
EXT SP
ESPG
J23
V 2 L o ( 2 5 6 / 7 6 8 M H z )
13
25 F R O M P L L - B
12
24
11
23
10
22
9 P2
21
8
20
TMP-K01X-A1
7
RS-232C
19
6
V 2 I F ( 1 0 . 7 M H z )
18
5
TO MAIN-A
17
4
16
3
15
2
14
1
P1
J22
CI-V
TMP-K01X-A1
NC
CI-V
GND
J 3
V 1 I F
T B P - P 0 1 X - A 1
T O R F - D
J14
ACHV
DC IN
NC
GND
BPF2
J15 J3 P2
P1
DCIN DCIN
DOUT DOUT
GND GND
CHASSIS
J16
HV1
HV2
LHV1 FROM POWER SW
LHV2
VOIC
BPF1
- 8
F I L S
4
V+ 13
I C 3 I C 3
R21
GND NJM2902V 14
11 12
100
NJM2902V
R17
9 I C 3
R22
8
10
100
NJM2902V
100K
Q2
1
2
3
XP1213
D5
C31 C32
6
47P 0 . 0 0 1
I C 2
R13
R10 470P
1 4
C29 C30
18 5 . 6
470P UPC2710TB 1SV237
2 3 5
J 4
T B P - P 0 1 X - A 1
L 1 2 1 L 1 2 0 L 1 2 2
0 . 5 6 U 0 . 5 6 U 82N
L 1 4
#302HEP
D1
L 1 C2
C1
47N 7P
0 . 0 0 1
1SV237
MP 5
1768
D3 F I 1
C11
I O
2 3
0 . 0 0 1
1 4 MBF-778A
MA862
(7 7 8 . 7 M H z )
R19
Q4
2SC4835
4 . 7 K
28
MMZ1608Y102BT
MMZ1608Y102BT
MMZ1608Y102BT J 1
MMZ1608Y102BT
10
E P 6 8
9
E P 6 7
8
E P 6 6
7
E P 6 5
6
5
4
3
2
1
E P 6 3
E P 6 2 5 2 6 1 0 - 1 0 7 1
E P 6 1 FROM MAIN- A
MMZ1608Y102BT
MMZ1608Y102BT
MMZ1608Y102BT
MMZ1608Y102BT
Q3
5 5 1
4
4 3 2
XN1114
L 1 6 L 1 7 L 1 8
L L 1 6 0 8 27N 1U
C48
C50
4P
3P
D6
1SV237
L 2 1 L 1 2 L 1 3 L 1 9
8 . 2 N 10N 12N 1U
C35
C37
0 . 7 5 P
0 . 5 P
I C 1
0 . 0 0 1
6 1
L 8 5 2
C54
4 3
8 . 8 N
5MXE14
C22
1P
C20
470P
C6
20P
L 1 5 #252HEP
L 2 3 7P L 3 D2
C7
12N 39N 1SV271
(2 6 6 . 7 M H z )
R3
470
F I 2
C16 D4
I O
0 . 0 0 1
MA77
MBF-778
R20
Q5
2SC483 5
4 . 7 K
R7
470