Fluke PM6690 Service Manual page 169

5
D
+3.3V
V4
V1
V0
R35
Not used
R11
R13
10
+5V
R14
10
320x97 DOTS
10
V0
C
V2
V3
2x10 SMD
20
19
18
17
16
TO 15
14
BASIC
13
BOARD 12
11
10
9
8
7
6
5
4
3
2
1
STDBY GATE TRIGB
J3
D2 D3 D4
EL414ID EL414GD EL414GD
B
+3.3V
C16
22uF-6.3V
+5V
A
+3.3V
C17 100nF U3B
PCA9555
5
4
C18
22uF-6.3V
L2
+3.3V
BLM21A102S
C7
100nF
J1
FPC 20
E1
TM32097AGFG
J2
FPC 20
+3.3V
C13
100nF
R34
4.7K
TRIGA
D5
EL414GD
S12 S13 S14
F1 F2 F3
S19
S20 S21 S22
StandBy INPUT A INPUT B SETTINGS
4
3 2
C1
100nF
R20
D1
L1
10uH
10BQ030
47
C21
C20
C19
100nF
2.2uF-35V
100nF
C5
R2
33pF
1M
U4
1 8 R4
REG
L SW
2 3
VIN DO
5 4
CTRL FB
6 7 470K
GND PGND
R6
TPS61045
Not used
R8 R9
820K 100K
R33
4.7K
+3.3V
U3A
PCA9555
S1
MEAS FUNC
S4
VALUE
S9
STAT PLOT
S15 S16 S17 S18
F4 F5 F6 F7
S23 S24 S25 S26
MATH/LIM USER OPT HO LD/RUN RESTART
PROBE GND1 PROBE GND2 H1 H2
3.2 PLATED SQUARE PAD 3.5 PLATED
3 2
Display & Keyboard,
1
U1C U2C
LM358 LM358
TP1
R1
15.0 - 17.6 V
V0
47
C3 C4
4.7uF-35V R3 4.7uF-35V
4.7K
TP2
LM358
R5
3
1 V1
2
10
R7
U 1A C22
100nF C8
4.7K
2.2uF-35V
C6 100nF
LM358 TP3
R10
5
7 V2
6
10
R15 2.2uF-35V C23
C9 U1B C10
33K
100nF 100nF
TP4
LM358
R16
3
V3
1
2
10
R17 4.7K C24
U 2A
C11 C12
22uF-6.3V
100nF 100nF
TP5
LM358
R18
5
V4
7
6
10 C25
R19
U2B C15
C14
4.7K 22uF-6.3V
100nF 100nF
S2 S3
AUTO SET UP
S5 S6 S7 S8
OK EXIT
LEFT ENTER R IGHT
S10
S11
C
DOW N
H3 H4
Pendulum Instruments AB
3.5 PLATED 3.5 PLATED
Web Site = www.pendulum.se
Title
Display and Key board Board
Project CNT-90/91
Size Document Number
4031 100 65860
A2
Mod ify Date: May 28, 2004 Sheet 1 o f
1
Schematic Diagrams 9-23
PCB 2
D
C
B
A
R e v
01
1