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 #:
000677
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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SOUND TROUBLE-SHOOTING CHARTS 661 THE TROUBLE TESTS THE CONDITION FOUND NEXT TEST 26. • Inspect regular-emergency switch for faulty, dirty, loose or open contacts • TROUBLE FOUND Trouble not found • No. 27 27. Check faulty channel amplifiers per Test No. 20, above. (If this can be done between or after shows, save effort by first using Test No. 19, above, to isolate faulty amplifier unit) TROUBLE FOUND 28. Change to, or make click test on, other projector. Sound from other projector normal No sound, either projector No. No. 5 29 29. Check with headphones at output to loud speakers Sound heard No sound heard No. No. II 30 30. Try sound from non-synch source (or rap first voltage amplifier tube with fingernail or shake it in socket; being sure to choose the channel switched into service) Sound heard No sound heard No. No. 31 33 31. Check projector changeover switch for faulty operation, dirty contact, open or short connection TROUBLE FOUND No fault found No. 32 32. Proceed (in order given) per Tests 26 and 24, above TROUBLE FOUND 33. Proceed (in order given) per Tests 26, and 15, above TROUBLE FOUND 34. Investigate unit showing faulty meter reading per Charts Nos. 4. 5 7. 8, 9, II, 13 or 14 TROUBLE FOUND 35. Investigate (in order named) switches, fuses, circuit associated with unlighted lamp TROUP'S FOUND 36. Switch to proper position TROUBLE CURED 37. Check unit carrying unlighted exciter or tube per Test No. 34, above TROUBLE FOUND