26
Appendix AAppendix A
Appendix AAppendix A
Appendix A
: Schematic Drawings: Schematic Drawings
: Schematic Drawings: Schematic Drawings
: Schematic Drawings
CIRCUIT BOARD 78B128 - LED DISPLAY
abgf
cdped
abgf
cdped
HP HDSP-5501
Common Anode
LED Displays
abgf
cdped
abgf
cdped
abgf
cdped
abgf
cdped
abgf
cdped
abgf
cdped
abgf
cdped
abgf
cdped
abgf
cdped
abgf
cdped
abgf
cdped
+
1
C1
d7
d8
Com
+5
a
d
b
dp
c
J7
a
d
c
e
g
f
d6
dp
d5
d3
d4
d2
b
d1
d3
d5
d4
e
f
g
d2
d1
WATTS
LSD MSD LSD
digit 8 digit 3 digit 4digit 2digit 1 digit 5
LSD MSD
AMPS
MSD
VOLTS
digit 4 digit 5digit 3digit 1 digit 2 digit 6 digit 7
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