Icom IC-7800 Service Manual Addendum page 237

Aug. 2008
DIGISEL UNIT (B)
RF OUT-B RF OUT-B
C535
0.0047
RL502
FTR-B4CA012Z
+15V
C637 120p
C628 0.5p
C638 100p
RL567 RL558
FTR-B4CA012Z FTR-B4CA012Z
+15V
C639 180p
C567 CP10B
0.0047
C629 1p
C640 180p
RL569 RL559
FTR-B4CA012Z FTR-B4CA012Z
+15V
L601 C568 CP11B
LR-476 0.0047
C630 2p
C641 56p
RL560
FTR-B4CA012Z
RL570
+15V
FTR-B4CA012Z
C569 LP1B
L602
0.0047
LR-477
C631 4p
C642 56p
RL561
FTR-B4CA012Z
RL571
+15V
FTR-B4CA012Z
L603 C570 LP2B
0.0047
LR-478
C632 8p
C643 47p
RL562
FTR-B4CA012Z
RL572
+15V
FTR-B4CA012Z
C571
L604 LP3B
0.0047
LR-479
C633 18p
R604 10k
RL563
FTR-B4CA012Z
RL573 +15V
FTR-B4CA012Z
C572 LP4B
L605
0.0047
LR-480
C634 36p
R605 10k
RL564
FTR-B4CA012Z
RL574
+15V
FTR-B4CA012Z
C573 LP5B
L606
0.0047
LR-481
C635 68p
RL565
FTR-B4CA012Z
RL575
+15V
FTR-B4CA012Z
C574 LP6B
L607
0.0047
LA-595
C636 120p
RL566
FTR-B4CA012Z
RL576
+15V
FTR-B4CA012Z
C575 LP7B
0.0047
RF OUT-B
+15V
+15V
C558 CP1B
0.0047
+15V
+15V
C559 CP2B
0.0047
RL554
FTR-B4CA012Z
CS1B
C554
0.0047
+15V
C560 CP3B
0.0047
+15V
RL555
FTR-B4CA012Z
+15V CS2B
C555
0.0047
C561
CP4B
0.0047
+15V
+15V
RL556
FTR-B4CA012Z
CS3B
C562 CP5B C556
0.0047 0.0047
+15V
+15V
C563
CP6B RL557
0.0047
FTR-B4CA012Z
CS4B
C557
0.0047
R704
DSAPB_
220
+15V
15.0V
C564 CP7B
R708 C706
0.0047
33 0.1
R709 C708
10p
22
+15V
C565 CP8B
0.0047
L703
+15V
LR-493
+15V
+15V
C566 CP9B
0.0047
76
RF OUT-B
C610 2p
C611 2.5p
C601 470p
C613 9p
C614 18p
C602 270p
C615 18p
RL551
C603 270p
FTR-B4CA012Z
C616 18p
C551
0.0047
CPX1B
C617 33p
+15V
C604 100p
RL552
FTR-B4CA012Z
C552
C618 47p
0.0047
LP7B
C606 150p
C619 18p
C620
18p
C607 150p
C621 18p
C608 150p
C622 9p
+15V
C609 150p
C624 2p
RL553
C625 2.5p
FTR-B4CA012Z
C553
RL701
FTR-B4CA012Z 0.0047
CPX2B
D705 1SS355
C715 0.0047
D701
Q701
XB15A204
R705 180
2SC5551 C701 R702
LP3B
0.1 180 D703
R706 270
LP2B
7.18V
R703 1SS355
D702
LP1B
47 XB15A204
D704
1SS355
6.47V
+15V
RF OUT-B
RF OUT-B
Explanatory notes
R509
R600 220
RL521
0
C521 FTR-B4CA012Z
0.0047
+3R3V +3R3V
IC501
C501
CAT24WC256K1.8
1 8
0.1
A0 VCC
2 7
A1 WP
3 6
NC SCL
4 5
VSS SDA
R502
10k
+15V
R503
10k
+3R3V +3R3V
+3R3V
C504 0.1
IC504 BU2099FV
R507 1k
20 1
VDD VSS
19 2 R508 1k
OE NC
18 3 DDAT R504 1k
SO DATA
C6B 17 4 DCK R505 1k
Q11 CLOCK
R506 1k
C5B 16 5 DSTB2
Q10 LCK
C4B 15 6 X1B
Q9 Q0
C3B 14 7 X2B
Q8 Q1
C2B 13 8 S1B
Q7 Q2
C1B 12 9 S2B
Q6 Q3
S4B 11 10 S3B
Q5 Q4
C505 0.1
IC505 BU2099FV
20 1
VDD VSS
19 2
OE NC
18 3
SO DATA
L7B 17 4
Q11 CLOCK
L6B 16 5
Q10 LCK
L5B 15 6 C7B
Q9 Q0
L4B 14 7 C8B
Q8 Q1
L3B 13 8 C9B
Q7 Q2
L2B 12 9 C10B C10B
Q6 Q3
L1B 11 10 C11B C11B
Q5 Q4
NETWORK ON: 14.97V
OFF: 3.20V
CPX1B R535 220
X1B
CPX2B R536 220
X2B
CS1B R537 220
S1B
CS2B R538 220
S2B
CS3B R539 220 S3B
CS4B R540 220 S4B
CP1B R541 220 C1B
CP2B R542 220 C2B
CP3B R543 220 C3B
CP4B R544 220 C4B
CP5B R545 220 C5B
CP6B R546 220 C6B
CP7B R547 220 C7B
CP8B R548 220 C8B
CP9B R549 220 C9B
CP10B R550 220 C10B
CP11B R551 220 C11B
LP1B R552 220 L1B
LP2B R553 220 L2B
LP3B R554 220 L3B
LP4B R555 220 L4B
LP5B R556 220 L5B
LP6B R557 220 L6B
LP7B R558 220 L7B
+15V
DSAPB_
CP502
J501
RF OUT-B to RXPLL-B
unit J1002
CP501
VOLTAGE LINE
RX LINE
CP504
J502
RF IN-B RF IN-B from BPF
unit J601
CP503
14.51V
L503
+3R3V
OE
OE
DSCLB
DSDAB
DDAT
DCK
DSTBB
X1B
X2B DSONB
S1B
+15V
+15V
S2B
S3B DSAPB
L504
DIGISEL
UNIT (A)
C7B
C8B
C9B
MESUREMENT CONDITIONS
voltage at RX
frequency: 14.1 MHz
mode: J3E(USB)
ANT(RX): no input
Digital tester
range: input impedance
+15V
DSAPB_