Battery Charger; Display Checks - Tektronix TEK 222 Manual

Performance Check Procedure — 222 DSO Preliminary Service
DISPLAY CHECKS
Equipment Required (See Table 4-1)
Battery-Charger Adapter
(wall transformer)
Small Flat-blade Screwdriver
INITIAL CONTROL SETTINGS
Power and Display
External Power ON
Power . ON
Front-Panel Controls
Auto Setup
Press for initial setup
PROCEDURE
. Check/Adjust INTENSITY Control
Adjust the INTENSITY control (located on the rear
panel) counterclockwise (CCW).
CHECK — that the crt beam cuts off (no intensity).
Adjust the INTENSITY control clockwise for normal
viewing.
4-6
4
. CHECK —that
. Adjust FOCUS Control
' Press the AUX FUNCT button on the top panel.
Select the ALIGN menu choice.
Adjust the FOCUS control (located on the rear
panel) for the best definition of the ALIGN XY pattern.
. Check/Adjust Horizontal Alignment
the HORIZ ALIGN adjustment
(accessible from the rear) will align the horizontal
traces with the horizontal graticule lines.
ADJUST—HORIZ ALIGN adjustment to align the
horizontal traces with the horizontal graticule lines.
. Check/Adjust Vertical Alignment
CHECK—that the VERT ALIGN adjustment
(accessible from the rear) will align the traces with
the vertical lines.
ADJUST —the VERT ALIGN adjustment to align the
vertical traces with the vertical graticule lines.
Press the CLEAR button to remove the display
pattern and return to normal operation.