ETC Source Four jr and jr Zoom CE User Manual - Manual (Page 11)

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Switching lens assemblies
Follow these procedures to replace a fixed field lens with Zoom lens.
Step 1: Loosen the screw at the front of the baffle. See Figure 11 .
Step 2: Pull the light baffle out of the barrel.
Step 3: Remove the beam focus knob from the bottom of the barrel and slide the lens assembly
from the barrel.
Step 4: Slide the Zoom lens rear assembly into the barrel and install its beam focus knob.
Step 5: Slide the Zoom lens front assembly into the barrel and install its beam focus knob.
Step 6: Reinstall the light baffle and secure it with the retaining screw.
Cleaning glass lens
Replace lens if they contain visible damage (cracks or deep scratches) that may impair their
effectiveness.
Step 1: Remove the lens assembly. See Source Four jr /jr Zoom Assembly Guide for lens
removal instructions.
Step 2: Remove dust with a blast of oil-free air or wipe with a clean, lint-free cloth. Isopropyl
alcohol, distilled water or a 50%-50% mixture of each can be used to clean the glass
surface.
Step 3: Reinstall the lens assembly.
N o t e : Reverse steps 1-6 to replace Zoom lens with a standard lens.
W A R N I N G : Do not use ammonia-based or other harsh commercial cleaners. Clean lens
only as directed.
Commercially available glass cleaning agents should be avoided as they
may contain ammonia, other harsh chemical detergents or abrasive agents.
These cleaners may damage the glass surface and the Anti-Reflective
coatings. Do not immerse or soak the glass in any cleaning solution.
Lens tray
Figure 11
Light baffle and
retaining screw