Physio Control LIFEPAK 9 - Page 88

Testing 3
Warning SHOCK HAZARD. High voltages up to 1000V may be present on the
leads of R302 and R306. Use an insulated screwdriver for adjustment.
3. Press ON. Adjust R302, Master Brightness (CUTOFF), until the vertical
raster lines are visible behind the characters.
4. Turn R106, Horizontal Hold (FRAME HOLD), approximately 1/8 turn
past the point where the horizontal rolling stops.
5. Access the Test Menu (turn power off, then press ON while pressing and
holding down LEAD SELECT and HR ALARM until the Test Menu is
displayed).
6. Press W ECG SIZE À to scroll to the DISPLAY test, then press
HR ALARM to start the test.
7. Press W ECG SIZE A to select the PATTERN test.
8. Adjust: R224, Vertical Size (SCAN SIZE); L201, Linearity (SCAN
LIN); and R111, Horizontal Height (FRAME HEIGHT), to obtain a
display pattern that fills most of the screen.
a 9, Loosen the screw holding the yoke clamp.
10. Rotate the yoke until the display pattern is level.
11. Tighten the screw on the yoke clamp and confirm that the display pattern
is still level.
12. Adjust the yoke rings to center the display pattern on the CRT.
13. Adjust R224 for a display pattern grid height of 73 +2mm. Adjust L201
to make each box of the display pattern approximately the same height.
Note: The adjustments of R224 and L201] are interactive. Repeat the
preceding step until both measurements are correct.
14. Turn R402, Video Gain (VID GAIN), fully counterclockwise.
15. Turn the defibrillator/monitor off and allow the CRT to cool down for
approximately
10
minutes.
Then,
access
the
Test
Menu
and
select
the
DISPLAY: PATTERN test.
170008-001 Orig
© August 1993 Physio-Control All Rights Reserved 3-31