BACP Printer Friendly RSTR 2000 Addendum

Kinoton FP20/23/30
9/27/2001

The RSTR 2000 product manual covers the general installation and tuning procedure while this supplemental sheet covers issues specific to the Philips/Kinoton FP20 series.

Parts Description
The reverse scan lens/solar cell assembly directly replaces the existing front scan lens. The LED bracket directly replaces the existing solar cell bracket. The electronics/power supply module fits in place of the exciter lamp.

FP20 Reader Installation
The installation takes approximately 1 to 2 hours. The time required will of course substantially decrease with practice.

First remove the front scan components. The solar cell bracket can be removed by loosening the M4/5 hex screw holding the cylindrical post from below. Swivel the solar cell bracket clockwise until it clears the bottom of the sound drum. Pull the assembly toward you. You may need to cut the solar cell wiring at this time. Check that you have two shielded audio pairs going to the cinema processor as these can be reused for the new reader. If the existing cable has 3 conductors, you will need to install new wiring from the reader output to the cinema processor.

Detach the flywheel/collar. Remove the sound drum by pulling it toward you from the operating side of the projector. You will need to hold the lay down roller out of the way while doing this. You may need to drive the shaft out from the gear side using a plastic hammer. Check and service the drum bearings as well as the lay down roller as needed.

Remove the lens by loosening the angled screw adjacent to the lens in the casting.
Remove the exciter lamp door by loosening the three setscrews holding it around the perimeter. Remove the exciter wiring.
Remove the locating pin.

Install the lens/solar cell assembly into the casting. The index mark on the lens should face directly up. Tighten the angled screw only enough to hold the lens in place.
Replace the sound drum and flywheel making sure the sound drum is fully seated.
Install the LED arm assembly by inserting the cylindrical post into the appropriate hole and swiveling the LED arm into the slot in the drum until the LED is opposite the lens.
Pull the LED arm assembly toward you until it rubs slightly against the inside of the drum slot. Insert a business card or .010-inch feeler gauge between the LED arm and the sound drum slot.

Tighten the setscrew located under the post just enough to keep the bracket from moving on its own.

Reader Wiring
Route the wiring from the LED bracket, audio output wiring, lens assembly and power supply brick module through the exciter lamp cavity. Connect the wiring as shown in the attached Fig. 1A. Slide the electronics board into the cavity and tighten the three setscrews.

You may choose to leave the electronics board dangling until you complete the alignment in case you have a polarity flip or some other innocent wiring error.

Reader Alignment (Manual pages 7-8)
Apply power to the unit. You should observe the main LED is lighted and three power monitor LED’s are on. The green signal presence LEDs should glow faintly if you wave a business card between the LED and lens.

Connect RTA and Scope as outlined on page 7. Set cinema processor gain controls fully up and slit loss fully down. Run Dolby level test film. Check the LED is not protruding past sound drum and contacting the film.

Adjust the LED protrusion by sliding the LED arm in or out as needed. Rotate the LED bracket for brightest signal on reader signal presence LEDs. (A screwdriver slot is provided on the LED arm to ease this procedure).

Adjust lens focus and azimuth using Cat. No. 69 Pink noise covered on pages 7-8/Fig’s. 3-6. Adjust processor slit loss control for flat response.

Run a combination loop of SMPTE Buzz track/Dolby Cat. No. 97 through the entire projector. Set lateral guide roller for best separation on Cat. No. 97 and minimum signal on the Buzz track (see Fig’s 7-10) as indicated on your scope.

Set scope to X/Y mode. You will see a + sign as the Cat. No. 97 runs through the projector. Rotate the LED bracket for maximum amplitude on the horizontal and vertical trace. Tighten the LED post setscrew.

Set Dolby level. You should have a minimum of 6dB reserve on the cinema processor’s preamplifier gain control. If you are having trouble reaching Dolby level, recheck LED vertical position.

Check solar cell wiring is correct by covering the outside (Rt) soundtrack with a business card. Right channel signal presence LED and cinema processor right channel meter should dip. If the left dips instead, recheck wiring.

Illumination Uniformity (Optional)
Verify correct LED horizontal position by running Dolby Cat. No. 566 Illumination Uniformity test film as described on Page 9.

Adjust horizontal LED position as needed by loosening the LED arm assembly setscrew and sliding the post in and out for best uniformity.

Reset Dolby level as needed.
The installation is now complete.