Icom IC-7800 Service Manual Addendum page 155

Feb 2009
RXPLL-A/B UNIT (2)
40M
PLL+5V
R510
2k
R511
2k
R512
2k
R513
2k
C504 0.1
R514 1
2k VSS
2
SYSCLKO
3
VDD
4
VDD
5
VSS
R515 6
2k DA0
7
DA1
8
DA2
9
DA3
10
C505
VSS
R516 100 11
2k DA4
12
DA5
13
DA6
14
DA7
15
VSS
R517 16
C506 0.1
2k VSS
17
DA8
18
DA9
19
DA10
20
DA11
R518 21
2k VDD
22
C507 0.1 TE1
23
TE2
24
TE3
25
VDD
R519
2k
R520
2k
R521
2k
R522
2k
L531
C531 L530 L532 C536
0.0047
0.0047
PLL+5V PLL+5V
40M
0V 31mV
C711
1.5p
L703 L702
R709 C713 Q702
LS-522 LS-522
8.2 0.0047 2SC4215
40M
40M
R506
1M
C525
R711
5 1
0.0047 PLL+8V
100
2
4
3
IC503
TC7S04F
4.57V
R548 R554
4.7k 150
R538 220
PLL+8V
R507
0 [A] only
75
ETCO0
74
ETCO1
73
ETCO2
72
VSS
71
ETCO3
70
C522 47
ETCO4
69
VSS
68
ETCO5
67
ETCO6 C516 0.1
66
ETCO7
65
VSS
64
VDD
63
IC501
Q4MA
62
SC-1246A
Q16MA
61
VSS C515 0.1
60
D501
FCK
59 DAN222
RC
58
REFOSC
57
VDD
56
PDTRI
55 C514
VSS
54 0.1
PD0
53
R509 C521
VDD
52
1k 0.1
PD1
51
PD2
PLL+8V
PLL+5V
DRES
R537
R535
1k
1M
2.42V
R536
10
R534
1 5
0
2
3 4
IC502
TC7S04F
C654
PLL+5V
0.1
C655
0.1
PLL+8V
L701 R656
1M
IC652
TC7S04F
R657 C660
2.41V
100 0.0047 1 5
2
3 4
SC-1287A(TC190G02EFG-0058)
2.06V 0.65V
PLL+8V
Q540
L544
R555
2SC4081
330
2.02V
L541 C543
C547
27p
100p
Q541
2SK210
C551 R561
2p
10
L542
E526GN
PLL+8V
MKRS
R582
22k
Q502
Q580
DTC114EU
2SC5226A
PLL+8V
PLL+5V
PLL+8V
L562
R8V
PLL+8V
PLL+5V
1 33
VSS I L601
RXPLL-B unit only
2 32
FSK1 Q
3 31
FSK0 PDM2
4 30
ETC0 PDM1
5 29
ETC1 PDM0
6 28
VDD VDD
7 27
SYS_CLK VSS
8 26
NUM0 RESET C657 C607
9 25
0.1
NUM1 ROMCE 0.0047
10 24
NUM2 VDD
11 23
VDD DA9
R602
1.8k
C656
Q601
0.1
2SC4215
C601
0.0047
IC651
PLL+8V
L681 L682
C680
0.0047
C682 C684
82p[A] 33p[A]
120p[B] 39p[B]
2.35V C683
C681
680p[A]
470p[A]
180p[B] 390p[B]
7.78V
Q592
2SB1123
PLL+8V
Q593
DTC114EU
R596
6.8k
Q591
2SC4673
R562 R588
220
18 [A] C571
180 [B] 0.0047
R573 R575
Q561
C566 33 [A]
R570 15 [A]
2SC5226A
0.0047 18 39 [B] 39 [B]
C801 R802
0.0047 470
Q811
C813
R812
2SK882 560p
1k
FI831
Q831
L831
R832 FL-356
2SK882
LR-414
68
1 4
IN GND
3 2
GND OUT
Q832
2SB1123
Q833
DTC114EU
PLL+5V
PLL+8V
R840
RXPLL-A unit only
6.8k
PLL+8V
PLL+5V
IC602
TC7S08F
1 5
2
R603
3 4
2.2k
RXPLL-A unit only
L602
C608
0.0047
R608
1k
PLL+8V
R686
100
C686 C688
270p[A] 270p[A]
330p[B] 330p[B] C811
0.1
[A] only
R693 C689
C687 Q680
3.3k [A] 0.1
0.001[A] 2SC4081
220 [B]
820p[B]
C685
560p[A] L683
270p[B]
76
L566
to MAIN
LS-471A [A]/[B]
unit J502
J561
T2LO/S2LO
[A]
to RXPLL-B
unit J831
[B]
TX: 3.5dBm [A]
RX: -3.5dBm [B]
L565
C592 LS-471A
27p
Q801
2SK882
R806
18
L801
LS-484B
D821
L821
HSB88WS
LR-395
L822
LR-395
-11.4dBm
L834
LS-484B
J831
R837
15
S2LO from RXPLL-B
unit J561
[B] only
10M
10M R2LO
UNLK
UNLK
PLL+5V
PLL+8V RXPLL-A/B
T8V
T8V
R8V UNIT (3)
R8V
DRES
DRES
CK
CK
DATA
DATA
STB3
STB3
STB4
STB4
CN22
CN22
MKRS
MKRS
40M
40M
M100K
M100K
RXPLL-A/B
UNIT (1)
-57.0dBm [A]
-9.0dBm [B]
to RXPLL-A
(RXPLL-A/RXPLL-B)
unit J1001
J601
MKR/SAD
[A]
to SCOPE
L603
unit J3
[B]
C610 36p C612 12p
RXPLL-B unit only
-10.0dBm [A]
-18.0dBm [B]
to MAIN
R691 (RXPLL-A/RXPLL-B)
J681
unit J501
18
T3LO/DACK
[A]
C691
0.1 to MAIN
unit J399
[B]
MESUREMENT CONDITIONS
voltage at RX(no instruction)
frequency: 14.1 MHz
mode: J3E(USB)
Explanatory notes ANT(RX): no input
(TX): no modulation
Digital tester
VOLTAGE LINE
range: input impedance
[A]: RXPLL-A unit
[B]: RXPLL-B unit