R5905752 /16 DP2K C142
4. If there are still fingerprints on the surface, wipe them off with lens cleaner together with a clean lens
cleaning cloth. Polish again with a dry one.
CAUTION: Never reinstall a UV blocker which is cracked or has a damaged coating. Neglecting this
will result in irreversible damage of optical parts in the projector.
11.8 Authorization to clear security warning on the
projector
When is an authorization required to clear the security warning?
If a module has been removed or if the sealed compartment has been opened, an authorization will be
required to clear the security warning.
Required tools
• Security key (Dallas iButton®).
• Authorization pin code.
Authorization procedure to clear security warning
1. Ensure that all modules are properly installed.
2. Start up the projector (standby mode).
3. Initiate authorization by holding the security key in the security socket D..
Image 11–7 Keypad
The color of the backlight of the numeric keys 1 to 6 of the local keypad changes from blue to yellow.
4. Enter pin code within 5 seconds.
• In case no keys are pressed, the color of the backlight of the numeric keys 1 to 6 changes back to blue.
• In case of an incorrect code entry, the color of the backlight of the numeric keys changes to red for 1
second and then back to blue.
• In case of a correct code entry, the color of the backlight of the numeric keys 1 to 10 changes to green
for 1 second and then back to blue.
Each attempt to clear the security warning and its result (successfully or unsuccessfully) is logged
inside the projector.
Maintenance
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