SECTION 9
BOARD LAYOUTS
• VCO-B UNIT
(TOP VIEW)
• VCO-C UNIT
(TOP VIEW)
• VR-A UNIT
• VR-B UNIT
• SW-A UNIT (TOP VIEW)
• SW-B UNIT (TOP VIEW)
• JACK UNIT
C1
C2
3
C
4
C
5
C
C6
C7
8
C
9
C
0
1
C
C11
2
1
C
C13
C14
5
1
C
C16
C17
C18
C19
0
2
C
1
2
C
2
2
C
C23
4
2
C
C25
C26
D1
D2
D3
D4
5
D
6
D
J1
J2
1
L
L2
L3
4
L
L5
L6
L7
8
L
L9
L10
Q1
2
Q
Q3
4
Q
1
R
2
R
3
R
4
R
6
R
R7
R8
R9
0
1
R
R11
R12
R13
5
1
R
R16
7
1
R
B4799C
H0
H5
H10
H15
H20
H25
H30
H35
0
V
5
V
0
1
V
5
1
V
0
2
V
C1
C2
C4
C5
C6
C7
8
C
C9
0
1
C
1
1
C
2
1
C
C13
C14
C15
6
1
C
C17
C18
9
1
C
0
2
C
C24
C25
C26
C27
C28
9
2
C
C30
C31
1
D
2
D
3
D
4
D
5
D
6
D
7
D
8
D
9
D
0
1
D
J1
J3
J4
J5
1
L
L3
4
L
5
L
L6
7
L
9
L
0
1
L
1
1
L
L12
L13
1
Q
Q2
3
Q
Q4
R2
3
R
R4
R5
6
R
R7
R8
R10
R11
R12
3
1
R
4
1
R
5
1
R
6
1
R
7
1
R
B6556A
H0
H5
H10
H15
H20
H25
H30
H35
H40
H45
H50
0
V
5
V
0
1
V
5
1
V
0
2
V
5
2
V
0
3
V
5
3
V
0
4
V
5
4
V
J4
RECG 9
REC
EXSP
PHG
PHG
PH
GND
REC2
REC1 1
P1
PH
1
PHG
EXSP
PHG
REC
RECG 6
P2
REC1 3
REC2
GND 1
J1
HF
2
LV
1
J2
V+8
5
VCO3
+8
LO
VCO4
1
PHONES
REC
REC
REMOTE
J1
P16
9
P17
PB5
PB4
PB3
PB2
PB1
PB0
GND
1
J1
GND
1
GND
GND
PB4
PB5
PB6
PB3
PB2
PB1
PB0
P11
P12
P13
P10
14
J1
GND
1
SFT2
APFV
SFTV
L+5
SFT1
6
J1
PB2
1
GND
P10
DELV
PB3
L+5
6
9 - 1
• 9-1
R8500 A3.indd 27-28
12/1/2006 8:54:43 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...