Fluke 93 - Page 149

CORRECTIVE MAINTENANCE 7-23
Tabl9
7.4
Signals
measured on display drivers D1401/02/03.
Logic
0=OV
Logic
1 =+5V
Comp
Name
Scope
CIrc/IC
01
401/DI 402/D1 403
31
NC
32 -20V /VEE
33 NC
34 FRAME/DI
_L
35 M IhA
1 L
36 NC
37 /SHL
38 /CL
k A ,Ul
39 /FCS
40
NC
41 GND
42 NC
43
/DO
1 1 1 1
44
VCC
45 NC
46 NC
47 VI /VI
48
V2/V2
49
V5/V5
Freq.
Data
HlUA
0
L
0 H
0 L
70
Hz
A
34.7 Hz A
0 L
0 L
16.7 kHz A
0 L
0 L
0 L
0 L
70 Hz A
0 H
0 L
0 L
0 H
0
H
0 H
Description
Not Connected
Power
supply
Not Connected
..yshift register Data Input
Signal
to
convert
LCD driver
signal Into AC
Not Connected
Select shift
direction
shift
CLock
shift dock phase
Not Connected
GROUND (OV)
Not Connected
shift register Data Output
Volt supply (+5V)
Not Conr^ected
Not Connected
Power supply for LCD drive
Power supply for LCD drive
Power supply for LCD drive