Figure 5-3. 55018 High Voltage Areas And Anode Lead - HP 5501B Operating And Service Manual

h. Apply power to the system power supplies.
READY LED will flash rapidly for about 5 seconds. LASER LED
illuminates followed almost immediately by emission of laser light.
i. Adjust A1R12 (Figure 5-1) for 3.5 milliamperes ± 0.1 milliampere. If the current cannot
be adjusted to this value, see Laser High Voltage Troubleshooting in
laser power output (as measured in paragraph 4-9) is not greater than 120 microwatts
(at this current level), the laser assembly may require replacement.
j. Record the laser tube current in the "ADJUSTMENT RECORD" located at the end of this
section.
k. Turn off the system power supplies, disconnect the probe, set the TEST-NORM switch to
NORM, and reinstall the laser head covers.
l. Return all A3 jumpers, moved in step 5-20(d), back to NRM position (left-most position).

Figure 5-3. 55018 High Voltage Areas and Anode Lead

NOTE
HP5501B
Adjustments
Section 8. If the
5-5