-44-
VOLTAGE ANALYSIS OF DIGITAL SECTION
Plug the power supply into a 117 volt power source. The values given below are approximate.
From
To
Switch Position
Volts
Volts Measured
X
GND
In up position
5V
X
GND
In up position
less than 1V
Y
GND
In up position
5V
Y
GND
In up position
less than 1V
SW1
GND
In up position
5V
SW2
GND
In up position
5V
SW3
GND
In up position
5V
SW4
GND
In up position
5V
SW5
GND
In up position
5V
SW6
GND
In up position
5V
SW7
GND
In up position
5V
SW8
GND
In up position
5V
X
GND
In down position
less than 1V
X
GND
In down position
5V
Y
GND
In down position
less than 1V
Y
GND
In down position
5V
SW1
GND
In down position
less than 1V
SW2
GND
In down position
less than 1V
SW3
GND
In down position
less than 1V
SW4
GND
In down position
less than 1V
SW5
GND
In down position
less than 1V
SW6
GND
In down position
less than 1V
SW7
GND
In down position
less than 1V
SW8
GND
In down position
less than 1V
LOGIC SW
DATA SWITCHES
X X
Y Y
SW1
SW2 SW3
SW4 SW5
SW6 SW7
SW8
High Positions
SW1-8
X
X
Y
Y
Summary of Contents for XK-550K
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Page 50: ...SCHEMATIC DIAGRAM 49 ...