HP 9020 CE Handbook page 63

6-4 9020 Adjustments
(
~
19
I
/
Light Pen
Connector
0
1
~
~(I~
/ ' .-J
/ /
Fuse Power Cord Voltage Selector
Connector Switches
9020C Display
CRT Refresh Switch (9020A)
oJ
88-127V
[j
198-250V
110 Vac
d
88-127V
[fJ
198-250V
220 Vac
The 9020A has a CRT refresh switch mounted underneath the display. The switch has two
positions: 50 Hz and 60Hz. The switch should be set to match the local line frequency. As you face
the front of the display, 60 Hz is selected with the switch to the left and 50 Hz is selected with the
switch to the right.
Intensity
Adjustment
Dial
Display Self Test Button
(9020B and 9020C only)
SO/60Hz CRT
Refresh Rate Switch
(9020A only)
(left
=
60Hz;
right = 50Hz)
Display Self Test or Refresh Switch and Adjustment Dial