AT&T PC 6300 - Display Check

MAINTENANCE
Display Check
1. Verify that the Contrast and Brightness controls on the
display are rotated fully clockwise.
2. Verify that the display cord is securely plugged into the
connector on the rear panel.
3. Verify that +15 V dc is present on the power supply
connector for the Display Controller (Figure 5-7).
l'-12V-
' [^+12V-
MOTHERBOARD .
DISPLAY <
CONTROLLER ""
BOARD
5-26
SYSTEM
BOARDS
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.+12V
.GNO
GNO
.•+5V
INTERNAL
DRIVES
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+ 12V
GNO
— GNO
r +5V
SMALL
EXPANSION
BOX
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POTENTIOMETER
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Figure 5-7. Power Supply Connectors
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