Icom IC-7800 Service Manual Addendum page 543

RXPLL-A/B UNIT (2)
40M
PLL+5V
R510
2k
R511
2k
R512
2k
R513
2k
C504 0.1
R514
1
VSS
2k
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
C531 L530 L531 L532 C536
R534
0.0047 33µ 33µ 33µ 0.0047
0
PLL+5V PLL+5V
40M
0V 31mV
C711
1.5p
L702
C713 L703
R709 Q702
0.0047 LS-522 LS-522
8.2
40M 2SC4215
40M
R506
1M
C525 R711
5 1
PLL+8V
0.0047
100
2
4 3
IC503
TC7S04F
4.57V
R548 R554
4.7k 150
R538 220
PLL+8V
R507
0 [A] only
75 MKRS
ETCO0
74
ETCO1
73
ETCO2
72
VSS
71
ETCO3
70
ETCO4 C522 47
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
Q502
RC
DTC114EU
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
1 5
IC651
2 SC-1287
3 4
IC502
TC7S04F
C654
PLL+5V
0.1
C655
0.1
10
PLL+8V 11
L701
R656
100µ
1M
IC652
TC7S04F
R657 C660
2.41V
100 0.0047 1 5
2
3 4
2.06V 0.65V
PLL+8V
L544 R555 Q540
100µ 330 2SC4081
2.02V
L541 C543 C547
3.9µ 27p
100p
Q541
2SK210
C551
R561
2p 10
L542
E526GN
PLL+8V
R582
22k
Q580
2SC5226
PLL+8V
PLL+5V
PLL+8V
L562
10µ
R8V
PLL+8V
PLL+5V
33
1
VSS I L601
32
2 RXPLL-B unit only
10µ
FSK1 Q
3 31
FSK0 PDM2
4 30
ETC0 PDM1
5 29
ETC1 PDM0
6 28
VDD VDD
27
7
SYS_CLK VSS
26
8
C657
NUM0 RESET C607
25
9
0.1
NUM1 ROMCE 0.0047
24
NUM2 VDD
23
VDD DA9
R602
1.8k
C656
0.1
Q601
2SC4215
C601
0.0047
PLL+8V
L681 L682
330µ[A] 390µ[A]
C680
0.56µ[B] 0.68µ[B]
0.0047
C682 C684
82p[A] 33p[A]
120p[B] 39p[B]
C683
2.35V C681
680p[A]
470p[A]
390p[B]
180p[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 R570 33 [A] 15 [A]
2SC5226
0.0047 18 39 [B] 39 [B]
C801
0.0047
Q811 C813
R812
2SK882
560p
1k
FI831
L831 Q831
R832 FL-356
LR-414 2SK882
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
3 4
RXPLL-A unit only
C608
0.0047
R608
1k
PLL+8V
R686
100
C686 C688
270p[A] 270p[A]
330p[B] 330p[B]
R693
C689
C687
Q680
3.3k [A] 0.1
0.001[A] 2SC4081
220 [B]
820p[B]
C685
560p[A] L683
270p[B] 390µ[A]
0.82µ[B]
11 - 19
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]
high frequency voltage tester
50Ω terminal
L565
C592 LS-471A
27p
Q801
2SK882
R802 R806
470 18
L801
LS-484B
D821
L821
HSB88WS
LR-395
L822
LR-395
-11.4dBm
high frequency voltage tester
50Ω terminal
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]
high frequency voltage tester
50Ω terminal
to RXPLL-A
R603
(RXPLL-A/RXPLL-B)
unit J1001
2.2k J601
MKR/SAD
[A]
to SCOPE
L602 0.15µ L603 0.22µ
unit J3
[B]
C610 36p C612 12p
RXPLL-B unit only
-10.0dBm [A]
-18.0dBm [B]
high frequency voltage tester
C811
50Ω terminal
0.1
[A] only to MAIN
R691
(RXPLL-A/RXPLL-B) J681
18 unit J501
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
200mV: 100MΩ
[A]: RXPLL-A unit
2V: 11MΩ
20V,200V,1000V: 10MΩ
[B]: RXPLL-B unit