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In case no sound is obtained from the pick-up of one projector, turn "on" the exciter lamp when the projector is running and throw the "Film-Disc" switch to the "F ilm" position, and see if sound (frame line noise) can be obtained from the photocell. If sound can be obtained from the photo-cell, use the "SOUND ON DISC TROUBLE CHART," section 255.

In case no sound can be obtained when operating from sound-on-film, switch the "Film-Disc" switch to the "DISC" position and rub the needle of the pick-up. If sound is obtained from the pick-up, use the "SOUND ON FILM TROUBLE CHART," section 256.

In case no sound can be obtained from either the film or disc, switch the fader to the other projector and test both the pick-up and photo-cell for sound. The photocell can be checked for sound by passing a card up and down between the sound gate and the photo-cell housing with the exciter lamp lighted. If sound can be obtained from on-, projector but not the other, use the "FADER CIRCUIT TROUBLE CHART," section 257.

In case no sound can be obtained from either projector but can be obtained from a non-synchronous pick-up, use the "FADER CIRCUIT TROUBLE CHART," section 257.

In case no sound can be obtained from either projector or the non-synchronous pick-up, use the trouble chart which corresponds to the type of amplifier equipment used.

In case abnormal sound is obtained from one or both pick-ups and the sound-on-film reproduction is normal, use the "SOUND-ON-DISC TROUBLE CHART," section 255.

In case abnormal sound is obtained from one or both projectors when using sound film, and the sound from disc is normal, use the "SOUND ON FILM TROUBLE CHART," section 256.

In case of noisy fading or cross-talk, use the "FADER CIRCUIT TROUBLE CHART," section 257.

In case abnormal sound is obtained from both disc and film of both projectors use the trouble chart corresponding to the type of amplifier equipment used.

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Chapter Fourteen Pages
[1] [2] [3] [4] [5] [6] [7] [8] [9] [10] [11] [12]
[13] [14] [15] [16] [17] [18] [19] [20] [21] [22] [23] [24]

Chapter
[1] [2] [3] [4] [5] [6] [7] [8] [9]
[10] [11] [12] [13] [14] [15]

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