Fluke PM6690 Service Manual page 161

5
D
+3.3VD
R423 R423 R424 R424
4.7K 4.7K 4.7K 4.7K
2 DONE
2 INITN
C
U40A U40A
4
I/O0.0
5
I/O0.1
21 6
A0 I/O0.2
2 7
A1 I/O0.3
3 8
A2 I/O0.4
9
I/O0.5
10
I/O0.6
11
I/O0.7
22
1,2 SCL SCL
23 13
1,2 SDA
SDA I/O1.0
14
I/O1.1
15
I/O1.2
16
I/O1.3
17
I/O1.4
18
I/O1.5
19
I/O1.6
20
I/O1.7
1
INT
PCA9555 PCA9555
B
1,2,6,7,8 +5VD +5VD
C371 C371
220UF-10V 220UF-10V
A
1,2,6,7,8 +3.3VD +3.3VD
U40B U40B C372 C372
PCA9555 PCA9555 100NF 100NF
5
4 3
PROGN 2
R564 R564
FILTER_A 3
330 330
+5VD
C470 C470
10N 10N
R418 R418
2.2K 2.2K
R419 R419
Q38 Q38
BC807-25 BC807-25
L39 L39
6.8K 6.8K
IMP A 3
BLM21A102S BLM21A102S
+5VD
C471 C471
100NF 100NF
R421 R421
2.2K 2.2K
R422 R422
Q39 Q39
BC807-25 BC807-25
L40 L40
6.8K 6.8K
ATT A 3
BLM21A102S BLM21A102S
+5VD
C472 C472
100NF 100NF
R426 R426
2.2K 2.2K
R427 R427
Q40 Q40
BC807-25 BC807-25
L41 L41
6.8K 6.8K
AC/DC A 3
BLM21A102S BLM21A102S
+5VD
C473 C473
100NF 100NF
R430 R430
2.2K 2.2K
R432 R432
Q41 Q41
BC807-25 BC807-25
L42 L42
6.8K 6.8K
COM A 3
BLM21A102S BLM21A102S
C474 C474
100NF 100NF
R565 R565
FILTER_B 3
330 330
C475 C475
+5VD
10N 10N
R434 R434
2.2K 2.2K
R435 R435
Q42 Q42
BC807-25 BC807-25
L43 L43
6.8K 6.8K
IMP B 3
BLM21A102S BLM21A102S
+5VD
C476 C476
100NF 100NF
R437 R437
2.2K 2.2K
R438 R438
Q43 Q43
BC807-25 BC807-25
L44 L44
6.8K 6.8K
ATT B 3
BLM21A102S BLM21A102S
+5VD
C477 C477
100NF 100NF
R440 R440
2.2K 2.2K
R441 R441
Q44 Q44
BC807-25 BC807-25
L45 L45
6.8K 6.8K
AC/DC B 3
BLM21A102S BLM21A102S
+5VD
C478 C478
100NF 100NF
R443 R443
2.2K 2.2K
R444 R444
Q45 Q45
BC807-25 BC807-25
L46 L46
6.8K 6.8K
COM B 3
BLM21A102S BLM21A102S
C479 C479
100NF 100NF
4 3
2
R2 R2 R3 R3 R4 R4
10K 10K 10K 10K 10K 10K
6 OPCLK
1,2,6,7,8 +3.3VD
1,2 SCL
1,2 SDA
PREKOD2
6,7 -5.2VA
PREKOD1
PREKOD0
6 PRESC TEST
6 PRESC ON
1,4,6,7 +12VA
1,2,6,7,8 +5VD
6 OPCLK
1,2,6,7,8 +3.3VD
1,2 SCL
1,2 SDA
6,7 -5.2VA
6 OPTION
7,8 +15VD
1,2,6,7,8 +5VD
1,4,6,7 +12VA
1,4,6 +5VA
7 -5.2VI
2
Miscellaneous,
PCB 1, sheet 4(7)
1
D
J15 J15
20
19
18
PRES CAL ER
17
CONNECT OR
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
2X10 SMD 2X10 SMD
C 6
R431 R431
BURST 6
0 0
C
J16 J16
20
19
18
OPT I ON
17
CONNE CT OR
16
15
14
13
12
11
X5 X5
10
9
8
7
6
5
4
3
2
1
2X10 SMD 2X10 SMD
R428 R428
BURST 6
NOT USED NOT USED
L47 L47 B
+12VI 3
BLM21A102S BLM21A102S
C480 C480
100NF 100NF
L48 L48
+5VAI 3
BLM21A102S BLM21A102S
C481 C481
100NF 100NF
L49 L49
+5VBI 3
BLM21A102S BLM21A102S
C483 C483
100NF 100NF
L50 L50
-5.2VAI 3
BLM21A102S BLM21A102S
C484 C484
100NF 100NF
L51 L51
-5.2VBI 3
BLM21A102S BLM21A102S
C486 C486
100NF 100NF
A
1
Schematic Diagrams 9-15