Addendums to RSTR-2000
Remove the exciter lamp cabinet. It is attached to a mounting bar with
one screw and spring washer facing the front of the projector. The damper
assembly may need to be removed to gain access to the screw.
Remove the outer sound drum bell and the existing solar cell bracket.
Install the split film guard onto the sound drum axle. Slide the guard
all the way back to the inner bell and tighten clamping screws. Install
the LED bracket with the three screws provided. Route its wiring through
the hole previously used for the solar cell signal cable. Leave mounting
screws just loose enough so the bracket can move up and down under slight
pressure. Replace the outer sound drum bell. Check that the sound drum
does not rub against the LED bracket.
Attach reader bracket to mounting bar using the screw and spring washer
from the exciter cabinet. Leave the screw just loose enough so the
bracket can slide back and forth along the bar. Slide reader into bracket
until the tip of the lens is about 10mm from the sound drum. Tighten the
lens clamp so the reader is just free to slide in and out and rotate.
Connect all wiring to the readerís Phoenix connector as shown in Fig.
Reader alignment procedure for the V5/V8 is similar to that of other
projectors covered in the manual; the main difference is the
Cinemeccanica has a non-adjustable film path and relies instead on
lateral adjustment of the reader/lens assembly. The object is to get the
reader assembly lined up through the center of the soundtrack. It will
take a bit of patience to obtain correct lateral alignment due to the
fact that the mounting bar/reader bracket has no exact mechanical
reference to the center of the soundtrack.
LED/Reader Optical Alignment
Alignment is essentially the same as for other projectors except for the
instructions outlined below.
Run Dolby tone test film to make an initial mechanical alignment of the
LED assembly and reader/lens bracket assembly.
There should be a slight glow from the green audio signal presence
indicators when the Dolby tone loop is run. Twist LED bracket up and down
to obtain maximum brightness on these indicators. Tighten the three LED
base plate screws to hold this preliminary adjustment.
Slide reader/bracket back and forth for optimum and even brightness on
both LEDís. Tighten the bracket mounting screw to hold this adjustment.
Proceed to the Optical Alignment for focus and azimuth.
Thread and run a combination Cat. No. 97/Buzz Track test loop as
discussed in the Hint on page 11. Loosen reader bracket screw and slide
the reader bracket along the mounting bar to obtain satisfactory
crosstalk and buzz track waveforms (Figs. 8 thru 11). Tighten the screw
holding the adaptor to the bar once you are satisfied the reader is
Continue with the optical alignment procedure paying particular attention
to securing optimum alignment of the LED as shown in Fig. 12.
Recheck crosstalk and buzz track results and use the readers lateral
solar cell adjustment mechanism as needed to achieve an optimum crosstalk
and buzz track setting. The adjustment screw is accessible through a
small hole in the side of the electronics module.
Set Dolby level.
The alignment procedure is now complete.
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.
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
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
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
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.
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
Reader Alignment (Manual pages 7-8)
Apply power to the unit. You should observe the main LED is lighted and
three power monitor LEDís 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
Adjust lens focus and azimuth using Cat. No. 69 Pink noise covered on
pages 7-8/Figís. 3-6. Adjust processor slit loss control for flat
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 Figís 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
processorís 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.