Xerox 3050 Service Manual page 252

2.1 Control Panel Probable Cause Corrective Action
4. The Message Display is illuminated, but 4A.
some keys or LEDs do not operate.
5.
All
the
LEOS or
all
the keys do not operate. 5A.
50.
6. The backlight does not operate and all 6.
other components operate.
7. The Media Width Lamps do not operate 7.
correctly, but
the
Control Panel displays do
operate correctly.
There is an internal fault in the Control
4A. Replace the Control Console Assembly.
Console circuits.
There
is
an open circuit in the wires. I 5A. Go to FLAGS 1 and 3 and check for an open
circuit in the wires between A3P301 and
A X P I .
There
is
an internal fault in the Control
Console Circuits or Control PWB (A3). 50. Order the Control Console Assembly and
Control PWB (AZ). Replace the Console
Assembly. If the problem persists, replace
the Control PWB (A2).
There i s an internal fault in the Control
6. Replace the Control Console Assembly.
Console circuits.
There is an internal fault in the Control 7. Go to FLAG 4 and check for an open circuit.
Console circuits.
I
If
there is no open circuit, replace the Control
Console Assembly.
81 94
2.1 Control Panel RAP
2.1 52 3050