Runco Sc 1 Projector User Manual

Maintenance and Troubleshooting
Runco SC-1 Owner’s Operating Manual 89 
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IMINARY
5.3 
Maintenance and 
Cleaning
To help ensure optimized performance and reliability, check electrical, optical and other 
components regularly as described below. 
ElectricalDo the following every 60 days or 500 hours of projector use: 
 Check the contact surfaces of the positive (anode) and cathode (negative) connections 
for cleanliness. Clean electrical contact surfaces as necessary to prevent contact 
resistance from...

Maintenance and Troubleshooting
90 Runco SC-1 Owner’s Operating Manual
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Cleaning the LensRemoving Dust: 
1. Brush most of the dust off with a camel-hair brush and/or blow dust away with 
compressed air. 
2. Fold a microfibre cloth smooth and gently wipe remaining dust particles off the lens. 
Make sure to wipe evenly with the smooth portion of the cloth that has no folds or 
creases. Do not apply pressure with your fingers — use the tension in the folded cloth 
itself to collect the dust. 
3....

Maintenance and Troubleshooting
Runco SC-1 Owner’s Operating Manual 91 
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Air Flow Interlocks: The lamp fan vane switch is located within the lamp cooling 
compartment. The extractor vane switch is located just inside the top exhaust duct on the 
projector. Check and, if necessary, clean the switches to remove accumulated dust or dirt 
that could impede movement. 
Within the exhaust duct connected at the top of the projector, adequate airflow must be 
maintained and routed away from the...

Maintenance and Troubleshooting
92 Runco SC-1 Owner’s Operating Manual
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5. Using a hex wrench of the appropriate size, loosen the set screws from the 
negative/cathode (rear, 7/64”) and positive/anode (front, 3/16”) lamp connectors; see 
Figure 5-1. Apply minimal torque and DO NOT stress the quartz tube. 
Figure 5-1. Disconnecting the Old Lamp
6.Carefully slip the positive anode connector off the front of the lamp.
7. Handling by the cathode end only, unscrew the lamp from the rear connector...

Maintenance and Troubleshooting
Runco SC-1 Owner’s Operating Manual 93 
PREL
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Figure 5-2. Installing A New Lamp
12. Rest the anode (+) end of the lamp on the lamp cradle as shown in Figure 5-2. Then, 
slip the positive lamp connector over the bulb end. 
13. Tighten the set screws in both negative and positive lamp connectors; see Figure 5-3. 
If you accidentally touch the quartz body of the lamp with your bare hands, clean the 
surface as described in Maintenance and Cleaning on page 89.  
Figure...

Maintenance and Troubleshooting
94 Runco SC-1 Owner’s Operating Manual
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14.Check Leads: Make sure that the anode (+) lead between lamp and igniter is well 
away from any projector metal such as the reflector or firewall. 
 
15. Close the inner lamp cooling compartment door and turn the knob clockwise to 
secure it. 
16. Replace the lamp/air filter cover and tighten the screw to secure it. 
17. Re-attach the AC power cord to the projector.
18. If the new lamp is the same size as the replaced...

Maintenance and Troubleshooting
Runco SC-1 Owner’s Operating Manual 95 
PREL
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Filter ReplacementWhenever you replace the lamp – or more often if the projector is installed in an extremely 
dusty environment – you should also replace the air filter. The filter is located on the lamp 
side of the projection head, near the front (see 
Figure 2-1). 
1.Turn off the projector. Allow the projector cooling fans to run for at least 10 minutes 
prior to disconnecting the power cord and removing the lamp...

Maintenance and Troubleshooting
96 Runco SC-1 Owner’s Operating Manual
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5.6 
Troubleshooting Tips
Table 5-1 provides some general guidelines for troubleshooting problems you may 
encounter with the SC-1. If the suggested solutions fail to resolve the problem or if you 
encounter an issue not described here, please contact Runco Technical Support. 
Table 5-1. Troubleshooting Chart 
SymptomPossible Cause(s)Solution
The projector does not turn 
on.  The SC-1 is not plugged in 
or the AC outlet...

Maintenance and Troubleshooting
Runco SC-1 Owner’s Operating Manual 97 
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The display is jittery or 
unstable. Poor-quality or improperly 
connected source. 
 
 
 The horizontal or vertical 
scan frequency of the 
input signal may be out of 
range for the projector. 
 Ensure that the source is 
properly connected and of 
adequate quality for 
detection. 
 Correct at the source. 
Image is too bright and/or 
lacks definition in the bright 
areas of the image.  Contrast is set too high.  Lower...

Maintenance and Troubleshooting
98 Runco SC-1 Owner’s Operating Manual
PREL
IMINARY
Error CodesIf the status code display on the back of the projector shows one of the following values, 
you have encountered a likely system error requiring the attention of a qualified service 
technician. Acknowledge and clear the error by pressing EXIT twice on the rear-panel 
keypad. Try resetting the projector by powering it off, allowing it to cool and powering it on 
again. Refer to 
Table 5-2 and contact your...