Agilent Technologies HP 8719D Service Manual page 208

1. Press Cj) MlRE
intensity at 100%.
Press (System) '~~lJYBX~~~ ,+l&3T3 (62) Ixl) liZl%XE TlBT RWTXNE , to
set a white screen test pattern on the display.
3. Set the photometer probe to NORMAL. Press @!GEIi~ on the photometer to
switch it on and allow 30 minutes of warm-up time. Zero the photometer
according to the manufacturer's instructions.
4. Center the photometer on the analyzer display as shown in Figure 6-7.
Note
The intensity levels are read with a display bezel installed.
5. If the photometer registers less than 50 Nits, the display backlight lamp is
bad. Refer to the "Replacement Procedures" chapter in the service manual
for information on display lamp replacement.
Figure 6-7. Backlight Intensity Check Setup
Digital Control Troubleshooting