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RL
CTRL
-30MHz ANT2
-30MHz ANT1
ANT
SW
Q16
2SK2036
AT2O
LPF
ATT
20dB
RL
CTRL
Q15
2SK2036
ANSW
B2
HPF
ATT
BPF
B3
B3
LPF
B2
BPF
B4
B4
1.6-2MHz
2-4MHz
BPF
B5
B5
4-8MHz
BPF
B6
B6
8-11MHz
BPF
B7
B7
11-15MHz
BPF
B8
B8
15-22MHz
BPF
B9
B9
22-30MHz
B1
LPF
B1
0.1-0.5MHz
SW
HF8
HF13
SW
CTRL
Q12
RN2427
Q10
XP1213
HF5
B9
SW
SW
Q17
RN2427
Q14
DTA114EU
Q13
XP1213
CTRL
SW
Q5
DTA114EU
CTRL
PRFF
PRFO
Q4
RN2427
SW
THRO
PRE
RF
AMP
ATT
D16
1SV237
LPF
Q6,Q7
2SK2171
BPF
IF
AMP
Q1,Q2
2SK2171
AGC
CTRL
Q3
XN4601
AGC (FROM MAIN)
BPF
LO
AMP
ATT
H1LO 48.9-78.79999MHz
(FROM PLL)
Mdat
McK
STBC
OE
IC3
BU4094
Q1
Q3
Q2
Q4
Q5
Q6
Mdat
Mck
STBC
OE
IC4
BU4094
13.8
+5
+8
Q1-Q8
B1
B2
B3
B4
B5
B6
B7
B8
IC5
TD62783
(FROM MAIN)
D18
ND433G
ATT
LPF
LPF
IC1
uPC2710
ATT
LO
AMP
IC2
uPC2710
H2LO 38.1MHz
(FROM PLL)
HFIF 10.7MHz
30MHz-2GHz ANT
ANT
SW
HPF
Q8
3SK131
IC1
GN1017
RF
AMP
ATT
RF
AMP
IC3
uPC2708
ATT
1025-1999.99999MHz
RIPPLE
FIL
Q13
2SC4081
IC2
5MXF25-7
LPF
ATT
RX
SW
LPF
LPF
AMP
IC9
uPC2709
ATT
5M
ATT
2ATN
THROUGH
20dB
ATT
10dB
THROUGH
1ATN
RF
MUTE
MUTE
Mdat
Mck
STBB
OE
IC10
BU4094
(FROM MAIN)
+24
+5
+8
IC11
TD62783
1GON
2ATF
2ATN
1ATF
1ATN
5MON
5MOF
Q11
2SC4835
Q12
2SC4835
1ATF
2ATF
CTRL
Q7
XP1213
Q1-Q7
SW
Q3
RN2427
SW
Q10
DTA114EU
5M
1G
RL
CTRL
Q2
XP1213
CTRL
Q6
DTC144EU
SW
Q14
RN2427
SW
Q5
RN2427
1G5V
30-1024.99999MHz
1G
LPF
0.5GHz
1/2
IC8
uPB584G
5M
1G
1.00/1.01GHz
AMP
IC7
uPC2708
ATT
VCO
IC6
MQE001-1016
LPF
PLL
IC
IC4
MC145190
Mdat
Mck
STBE
(FROM MAIN)
LPF
Rx-f=1025-1199.99999MHz
Lo-f=0.50GHz
Rx-f=1200-1989.99999MHz
Lo-f=1.00GHz
Rx-f=1990-1999.99999MHz
Lo-f=1.01GHz
CHARG
PUMP
DDS
Q44 2SA1576
Q45 2SC4081
LPF
VCO
Q2
2SK210
BUFF
Q3
2SC4081
LPF
AMP
IC4
TC7S04F
BPF
FL1
D/A
PLL
IC
CHARG
PUMP
Q42 2SC4081
Q43 2SA1576
Q38 FMS2A
Q39 FMW2
SW
LPF
IC20
TC4W66F
CTRL
Q41 DTC114EU
Q40 DTA144EU
Pdat
Pck
STP1
IC5
MC145190
PAKA
VCO2
Q3
2SK1577
BUFF
Q4
2SC4835
VCO1
Q1
2SK1577
Q2
2SC4835
BUFF
VCO-A BOARD
V1
V2
ATT
LPF
AMP
IC6
uPC1688
ATT
1/8
M1L
IF
AMP
Q2
3SK131
LPF
ATT
ATT
IC22
MB511PF
HPF
LPF
FL1
HPF
LPF
FL2
Rx-f= 30- 499.99999MHz
= 1200-1499.99999MHz
Lo-f=808.7-1278.69999MHz
Rx-f= 500-1199.99999MHz
= 1500-1999.99999MHz
Lo-f=766.7-1291.69999MHz
H1LO
(TO RF-A)
SW
LCT(TO MAIN)
IC8b
NJM4558
BUFF
Q7,Q8 DTC144EU
Q9 DTA144EU
PLL
IC
IC10
MC145190
LPF
Q14 2SK536
Q15 2SC3661
VCO3
Q1
2SC4835
VCO4
Q3
2SC4835
SW
Q2 DTC114EU
SW
Q4 DTC114EU
VCO-B BOARD
VCO3
VCO4
ATT
IC12
uPC1688
AMP
V1L
1/8
IC23
MB511PF
Q51
2SC4081
BUFF
304.6MHz
256.O/768.0MHz
ATT
H2L
HPF
LPF
FL3
256.0MHz
HPF
LPF
768.0MHz
LPF
Rx-f=0.1-29.99999MHz
Lo-f=38.1MHz
ATT
H2LO
(TO RF-A)
ATT
Rx-f= 30- 499.99999MHz
=1200-1499.99999MHz
Lo-f= 768.0MHz
Rx-f= 500-1199.99999MHz
=1500-1999.99999MHz
Lo-f= 258.0MHz
V2LO
DDS
Pdat
Pck
STP2
IC13
SC-1287
D/A
HPF
Q28
2SC4081
BUFF
LPF
AMP
IC19
TC7S04F
LPF
IC18
TC7S04F
AMP
DDS
D/A
BUFF
HPF
Q31
2SC4081
LPF
IC15
SC-1287
3LO
BFO
Lo-f=10.245MHz
IF-SHIFT=10.2435-10.2465MHz
USB=456.5kHz
CW =454.2kHz
IF-SHIFT=452.0-456.0kHz
(100Hz-STEP)
1/2
IC11
HD74LS90FP
VCO1
VCO2
VCO3
VCO4
HF
VU
FIL3
FIL4
ATT
LPF
AMP
IC7
TC7S04F
IC21
TC7S04F
AMP
CR-452
TCXO
OPTION
CR-293
X1
Pdat
Pck
STDB
Pdat
Pck
STDB
DATA
CTRL
IC1,IC2
BU4094
STP1,STP2
STDA,STDB
PAKA
AMP
SW
MIXV
Q3
DTA114EU
BPF
FI3 16kHz
NB
AMP
Q9
2SK682
NB
DET
D10
1SS375
Q11
2SK862
NB
AMP
NB
AMP
IC5
UPC1658
SW
Q58
XP4311
/WF8
/WF8
AGC
CTRL
Q10
XP4601
Q48
2SC4081
BUFF
HF=x1
VU=x2
IC9
uPC2709
CHASSIS
CONV-B UNIT
RF-C UNIT
PLL-B UNIT
SW
Q10 RN2427
Q11 DTC114EU
SW
Q12 RN2427
Q36 DTC114EU
SW
Q54 DTC144EU
Q55 DTA144EU
SW
Q52 DTC144EU
Q53 DTA144EU
V1
V2
FL1
FL2
SW
Q21 DTC144EU
Q22 DTA144EU
FL3
SW
Q24 DTC144EU
Q25 DTA144EU
FL4
SW
Q13 DTC144EU
Q37 DTA144EU
V1L
SW
Q46 DTC144EU
Q47 RN2424
H1L
SW
Q49 DTC144EU
Q50 RN2424
H2L
VCO1
VCO2
FIL3
FIL4
VU
HF
+5
REG
IC24
TA7805F
+5
REG
IC16
TA7805F
+8
REG
IC17
MC7808
+16
REG
Q34 2SC3661
D20 MA8160
13.8
+24
D+5
+5
+8
+16
Pdat
Pck
PSTB
POE
Pdat
Pck
0.5-1.6MHz
Q11
RN2427
FI1
48.8MHz
5M
SHIFT
SW
Q4
DTC144EU
HPF
0.5GHz
1.00/1.01GHz
Pdat
Pck
STDA
IC3
SC-1246
Pdat
Pck
STDB
POE
VCO3-f=256.0MHz/304.8MHz
VCO4-f=768.0MHz
VCO1-f=383.35-510.399995MHz
VCO2-f=510.40-645.84995MHz
FL4
LPF
LSB=453.5kHz
AM =455.0kHz
Rx-f= 0.1-29.99999MHz
LO-f=46.9-78.79999MHz
V1LO
THROUGH
(50ohm)
(500ohm)
30.2MHz
HF
(TO MAIN)
REF 15.1MHz
V1L
391.2-630.399992MHz
(TO RF-B)
1LLV(L1AD)
(TO MIX)
A
B
C
D
E
F
G
H
I
J
K
• BLOCK DIAGRAM-1
SECTION 10 BLOCK DIAGRAM
10 - 1
R8500 A3.indd 7-8
12/1/2006 8:54:33 AM
Summary of Contents for iC- r8500
Page 1: ...SERVICE MANUAL ADDENDUM CONTENTS REPLACEMENT PAGE 5 3 PARTS LIST 1 VOLTAGE DIAGRAM 21 Jun 2011...
Page 24: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 21 VOLTAGE DIAGRAM 23 Apr 2011...
Page 52: ...Replacement page Jan 2011 5 6 MAIN A UNIT CP2 Noise blanker check point...
Page 79: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 21 VOLTAGE DIAGRAM 23 Sep 2010...
Page 147: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 20 VOLTAGE DIAGRAM 22 Feb 2009...
Page 177: ...SERVICE MANUAL ADDENDUM CONTENTS PARTS LIST 1 BOARD LAYOUTS 20 VOLTAGE DIAGRAM 28 Jul 2008...
Page 213: ...S 14318XZ C1 Nov 2006 COMMUNICATIONS RECEIVER...
Page 221: ...4 2 UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Page 222: ...4 3 UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Page 223: ...4 4 UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Page 224: ...4 5 UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Page 225: ...4 6 UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Page 226: ...4 7 UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Page 227: ...4 8 UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Page 228: ...4 9 UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Page 229: ...4 10 UNIT NAME MAIN MAIN A RF A RF C RF B RF D MIX MIX A CONV CONV B PLL PLL B...
Page 230: ...5 1 SECTION 5 ADJUSTMENT PROCEDURE MAIN A PLL B PLL B MAIN A...
Page 231: ...5 2 PLL B MAIN A...
Page 233: ...5 4 MAIN A MIX A AND RF C UNITS CONBV B AND RF C UNITS...
Page 234: ...5 5 MAIN A MAIN A MAIN A MAIN A MAIN A MAIN A MAIN A...
Page 235: ...5 6 MAIN A UNIT...
Page 236: ...5 7 RF C BPF TUNED VOLTAGE ADJUSTMENT RF C BPF...
Page 237: ...5 8 RF C BPF TUNED VOLTAGE ADJUSTMENT continued RF C BPF...
Page 238: ...5 9 RF C BPF...
Page 239: ...5 10...
Page 261: ...7 2...
Page 262: ...7 3...
Page 265: ...SECTION 8 SEMICONDUCTOR INFRMATION 8 1...
Page 266: ...8 2...
Page 286: ...1 1 32 Kamiminami Hirano ku Osaka 547 0003 Japan S 14318XZ C1 2006 Icom Inc...