F. H. Richardson's bluebook of projection (1942)

Record Details:

Title:
F. H. Richardson's bluebook of projection
Date:
1942
Publisher:
New York : Quigley Publishing Company, Inc.
Volume:
F. H. Richardson's bluebook of projection
Leaf #:
000702
Language:
English
Subjects:
Motion Pictures, Motion Picture Technology
Collection:
Books
Format:
Books
Contributor:
Media History Digital Library
Sponsor:
Media History Digital Library
Coordinator:
Media History Digital Library
Description:
Date Added:
July 11, 2024
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686 RICHARDSON'S BLUEBVOK OF PROJECTION THE TROUBLE TESTS • J 3. Test speech circuit electrolytic condensers in trouble area for loss of capacitance, or replace them if condenser tester is not available 14. Replace faulty tube 15. Check heater supply circuit to socket in question for open or ground 16. Check heater supply circuit to that socket for shorted or grounded resistor 17. Adjust setting 18. Check if knob setting and contact setting coincide 19. Reset contact, tighten knob 20. Reset feedback control 21. Repeat Test No. 10, above, using constant-signal film or oscillator, and wide reading volume indicator in place of headphones 22. Apply tests II, 12 and 13, above, to all amplifying circuits 23. Proceed per Chart No. 12. 24. Check supply circuit in question for high resistance, short or ground, including faulty insulation 25. Check series resistors of supply circuit in question, using ohmmeter to find increased resistance caused by carboniiation or partial short THE CONDITION FOUND TROUBLE FOUND TROUBLE CURED New tube does not light New tube burns out TROUBLE CURED TROUBLE FOUND TROUBLE CURED Contact not in line with knob Contact in line with knob TROUBLE CURED TROUBLE CURED Trouble localized Necessary test equipment not available TROUBLE FOUND TROUBLE CURED TROUBLE FOUND No trouble found TROUBLE FOUND NEXT TEST No. 15 No. 16 No. 19 No. 4 No. II No. 22 No. 25