Zls (Zonal Lumen Seconds) Graywall Test - Polaroid Spectra/Image One Board Repair Manual

ZLS (Zonal Lumen Seconds) Graywall Test

Purpose
This Test measures the maximum strobe output. This is done by measuring the energy
on the film plane during a 4.5 foot (135 cm) graywall exposure with the shutter blades
fully open.
Test Setup
1. Trip the Door Switch on the camera into the down position.
2. Place the camera on the Horn on top of the Tester, with the lens 4.5" from the
graywall. The front of the camera must be parallel to the graywall, and the area
visible in the viewfinder must be clear of objects.
3. Flash should be ON (bar below symbol), and all other functions should be OFF (no
bar) as shown in Figure 3-13.
Figure 3-13. Display for flash ON, all other functions OFF
If necessary, turn the appropriate features on or off as follows:
• To turn flash ON: Press the MODE button until the symbol for flash is displayed.
Then press the up or down arrow button to display a bar under the symbol.
Press MODE once to return to full display.
• To turn autofocus OFF: Press MODE until only the autofocus symbol is visible in
the LCD display. Then press the up or down arrow to remove the bar from
beneath the autofocus symbol. (No bar indicates that the feature is off.)
Press MODE twice to return to a full display.
• To turn audio OFF: Press the MODE button until the symbol for audio is
displayed. Then press the up or down arrow button to remove the bar from
beneath the symbol. Press the MODE button once to return to a full display.
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