TROUBLESHOOTING
Refer to the following guidelines if you encounter a difficulty in the operation of your Stewart Filmscreen. Problems related to electrical or motor function may require a qualified service person or electrician.
Should you have a problem that is not addressed here, call the Stewart
Filmscreen Corporation.
Problem description |
| Probable cause |
| Action to take |
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Mask won't operate. |
| No AC power available. |
| Check to see if the circuit breaker |
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| Outboard switching problem. |
| has switched off. Reset if needed. |
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| Check outboard switching | |
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| apparatus. |
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| Check voltage availability. Contact |
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| an electrician. |
Mask won't roll up or down (even |
| Bad connection at switch. |
| Have an electrician or qualified |
though power is available). |
| Polarity of VICS line may be bad. |
| service person check the |
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| connection as follows: | |
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| · If you have a high voltage control |
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| switch, check switch |
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| connections. |
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| · If you have a low voltage control |
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| unit, check switch |
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| connections. |
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| · If you have a VICS, check line |
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| connections, or the mini |
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| the mask input or projector |
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| output. Check 12V DC line for |
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| correct polarity. Contacts may be |
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| contacts. |
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Mask roller chatters when power |
| Can be caused by voltage drop, |
| Have an electric ian or qualified |
is activated. |
| bad connections, or a defective |
| service person check all hook |
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| switch. |
| including all outboard wiring. |
Unit hums in up mode. ( Mask |
| The mask batten is retracting too |
| Have a qualified service person |
has already retracted.) |
| far into the case. |
| adjust the UP limit switch. Turn the |
|
| Failure to correct can damage |
| adjusting screw clockwise. Refer |
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| motor and screen. Do not use |
| to Figure 15. See pp. |
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| the unit until this problem is |
| manual. |
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| resolved. |
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Mask drops when up direction is |
| Drop in voltage. |
| Mask motor requires full voltage. |
activated (grinding noise occurs). |
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| Have an electrician or qualified |
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| service person check available |
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| voltage. |
20 | Stewart Filmscreen Corporation |
