Dolby Laboratories CP65 manual Smpte Buzz Track Stereo Optical Surround Level Cat. No

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1-2

(3)SMPTE Buzz Track

(4)Stereo Optical Surround Level — Cat. No. 151

g.The following films can also be purchased from Dolby Laboratories or a cinema equipment dealer. The films are optional items that are used in final system sound verification:

(1) “Jiffy” Test Film — Cat. No. 251 (2) “Listen . . .” Film — Cat. No. 351.

JIFFY		listen…
TEST FILM
CN 251–A subjective film for testing theatre sound		CN 351–The Stereo Demonstration Film
RECORDED IN		RECORDED IN
Running time: 8 minutes.		Running time: 8 minutes.
Picture format: 1.85:1 widescreen or		Picture format: 2.35:1 anamorphic.
	2.35:1 anamorphic.	Sound format:	04
Sound format:	04

			stereo optical
	stereo optical		with surround
	with surround	Dolby Laboratories, 100 Potrero Avenue,
Dolby Laboratories, 100 Potrero Avenue,		San Francisco, CA 94103-4813
San Francisco, CA 94103-4813		Telephone 415-558-0200, Telex 34409, Facsimile 415-863-1373
Telephone 415-558-0200, Telex 34409, Facsimile 415-863-1373		Dolby, the Double-D symbol and Dolby Stereo are trademarks
Dolby, the Double-D symbol and Dolby Stereo are trademarks		of Dolby Laboratories Licensing Corporation.
of Dolby Laboratories Licensing Corporation.		S89/4784/6776
S89/4784/8690

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Contents Model CP65 Cinema Processor Dolby Laboratories Inc Headquarters Table of Contents Section Reference Block Diagrams Introduction Page Section Equipment Required Smpte Buzz Track Stereo Optical Surround Level Cat. No Jiffy Test Film Cat. No 2 Listen . . . Film Cat. NoSection Initial SET-UP and Installation Voltage Acceptable Setting Voltage Range Fuse Type Next, check the jumpers in the following locations Cat. No , Power Supply Module Cat. No , B-Chain CardCat. No , Control Logic Card J2 NON-SYNCCP65 Backplane Standard CP65 or CP65ACP65-300 High Low Subwoofer subwoofer Output output These Modules are Necessary for Bypass Operation Slot Card Function Cat. No Two-channel NoiseReduction Module Channel DecoderContains a semi-regulated power supply with Voltage Setting Fuse Type InternationalIEC Notices HUM Problems Room lighting dimmer controls SCR-TYPEPage Section AN Overview of the Alignment Procedure Aligning the B-ChainPage Page Section Chain Alignment Preliminary Procedures Action IndicationLamp Voltage Optical Preamplifier Adjustments Chain Alignment Procedures Optical Preamplifier Adjustments 222 CAT. no Test Film Oscilloscope Traces Repeat CAT no Repeat 1 →Magnetic Preamplifier Adjustments Magnetic Alignment 100mV Section Chain Alignment Setting Room Equalization BypassLoudspeakers and Crossovers Amplifiers GeneralChain Alignment Procedures OffRepeat ActionChain Alignment Procedures Setting Room Equalization Do not adjust Paul Setting Room Equalization b. Adjusting L,C,R Gain 14 → 21 R 14 →Setting Mono Gain 79 dBCChain Alignment Procedures Subwoofer Alignment Cat. No 90 dBC 85 dBCFrom Step NoSelect format 04 Dolby Stereo A-Type Same AS 441Surround Equalization Alignment Cat. No Surround Equalization Alignment Cat. No Notes Cat. No 441Desired 88 dBC Bypass Msec Setting Adjustment of Surround DelayThumbwheel Switch Chain Alignment Procedures Adjustment of Bypass Gain Xx dBCFrom Xx dBC -3 dB Yy dBCAdjustment of Non-sync Gain Press the format 60 non sync switchAuto Freq Adjustment of Mono Gain and Equalization Notes Repeat page 5-20 StepChain Alignment Procedures Final Checks Press the format 04 Dolby Stereo A-type switchSection Reference Diagrams Cat. No Dual Noise Reduction Module Inputs Cat. No Optical Bass Extension and Surround Equalizer Card Cat. No B-Chain Facilities Card Cat. No Power Supply Card Cat. No Transformer Module Inputs Cat. No Control Logic Card +15M Cat. No +24V +15V15V +12B Appendix a Checking Phasing of Speakers Appendix B Effect of Changes in Slit Height on Slit Losses Cat. No a Circuit Description Appendix C CP65M Mono InstructionsOperation Schematic Cat. No a Appendix D Backplane Connections List Terminal Block TB3Connector J18