Onkyo-DR645-rec-sm维修电路原理图.pdf
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1、DR-645 SERVICE MANUALSERVICE MANUAL RC-798S DVD RECEIVER Silver and Black models MODEL DR-645(S)/(B) Ref. No. 4249 092010 220-240V AC, 50/60Hz 220-240V AC, 50/60Hz 220-240V AC, 50/60Hz 220-240V AC, 50/60Hz S CMP2P B CMP2P S CMQ3P S CMR6P There is no repair part available. Please replace the complete
2、 product or use a new product to secure repair parts. SAFETY-RELATED COMPONENT WARNING! COMPONENTS IDENTIFIED BY MARK ON THE SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. REPLACE THESE COMPONENTS WITH ONKYO PARTS WHOSE PART NUMBERS APPEAR AS SHOWN IN THIS
3、MANUAL. MAKE LEAKAGE-CURRENT OR RESISTANCE MEASUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER. RadioFans.CN 收音机爱 好者资料库 ContentsPage * Measurement Setup . 1-1 * Items Safety Attention . 2-1 to 2-2 * Instruction
4、On CD Playability . 3-1 to 3-2 * Electrical Specificaction . 4-1 to 4-2 * Block Diagram .5-1 * Wiring Diagram . 6-1 * ECO Power and Speaker Output Board Circuit Diagram . 7-1 Layout Diagram . 7-1 Circuit Diagram . 7-2 Layout Diagram . 7-3 * Display and Key Board * Tuner Board Circuit Diagram . 7-4 L
5、ayout Diagram . 7-4 * IPOD Board Circuit Diagram . 7-5 Layout Diagram . 7-5 * USB and Headphone Board Circuit Diagram . 7-6 Layout Diagram . 7-6 * Decoder Board Circuit Diagram .7-7 to 7-13 Layout Diagram . 7-14 * Explode View Diagram . 8-1 * Factory Part List . 9-1 to 9-7 * Revision List . 10-1 Rad
6、ioFans.CN 收音机爱 好者资料库 1-1 LF Generator e.g. PM5110 Recorder Use Universal Test Cassette CrO2SBC419 4822 397 30069 LEVEL METER e.g. Sennheiser UPM550 with FF-filter with FF-filter S/N and distortion met e.g. Sound Technology ST170 L R DUT or Universal Test Cassette FeSBC420 4822 397 30071 LEVEL METER
7、e.g. Sennheiser UPM550 S/N and distortion meter e.g. Sound Technology ST1700B L R DUT CD Use Audio Signal Disc (replaces test disc 3) SBC429 4822 397 30184 Bandpass 250Hz-15kHz e.g. 7122 707 48001 LF Voltmeter e.g. PM2534 DUT S/N and distortion meter e.g. Sound Technology ST1700B Frame aerial e.g. 7
8、122 707 89001 Tuner AM (MW,LW) To avoid atmospheric interference all AM-measurements have to be carried out in a Faradays cage. Use a bandpass filter (or at least a high pass filter with 250Hz) to eliminate hum (50Hz, 100Hz). RF Generator e.g. PM5326 05=iR Bandpass 250Hz-15kHz e.g. 7122 707 48001 LF
9、 Voltmeter e.g. PM2534 DUT RF Generator e.g. PM5326 S/N and distortion meter e.g. Sound Technology ST1700B Use a bandpass filter to eliminate hum (50Hz, 100Hz) and disturbance from the pilottone (19kHz, 38kHz). 05=iR Tuner FM Measurement Setup Items of Safety Attention 2-1 2-2 Items of Safety Attent
10、ion Set remains closed! N Y Play a CD for at least 10 minutes Y playability ok ? N playability ok ? add Info for customer SET OK check playability N Y playability ok ? check playability check playability return set Customer complaint CD related problem fast lens cleaning 1 2 3 For flap loaders (= ac
11、cess to CD drive possible) cleaning method 4 is recommended Exchange CDM 1- 4For description - see following pages 3-1 Instruction On CD Playability PLAYABILITY CHECK For sets which are compatible with CD-RW discs use CD-RW Printed Audio Disc.7104 099 96611 TR 3 (Fingerprint) TR 8 (600 Black dot) ma
12、ximum at 01:00 ? ?: Fingerprint10seconds ? ? For all other sets use CD-DA SBC 444A? TR 14 (600 Black dot) ? TR 19 (Fingerprint) TR 10 (1000 wedge) ? ?: 1000 wedge10seconds Fingerprint10seconds ? ? CUSTOMER INFORMATION It is proposed to add an addendum sheet to the set which ? ? ? ? ? The lens cleani
13、ng (method 3 ) should be mentioned in the addendum sheet. The ?l wording in national language as well as the printing is under responsibilit? o? the Regional Service Organizations. LIQUID LENS CLEANING ? ? ? “Cleaning Solvent ? ? ? clean cotton bud moistened with the special lens cleaner. ? the pict
14、ure below. ? ? This to avoid that little particles make scratches on the lens. ? 3-2 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? 4? ? ?40 ? ? ? 903336 983336 1063336 ? ? ? ? ? 2? ? ? ? ? ? ? ?mv?1 5W? ?mv?5 ? ? ? ? ? ? 4W? ? Channel Difference ? ? ? dB ? ? THD10% Output Power ? ? ? ? Total Harmonic Di
15、stortion ? ? ? THD10% Output Power MONO? ? ? ? ? ?30?dBu Auto ? ? ? ? ? ? ? ? RDS SENSITIVITY(2KHz)dB Channel Difference ? ? ? ? ? ? Channel Separation 1 ? Channel Separation ? Frequence Response ? Electrical Specification NEON ELECTRICAL FACTORY LTD. ELECTRICAL SPECIFICATION 4-1 ? ? ? ?0.5 ? ? ? ?2
16、00 ? ? ?0? ? ? ?55?45 ?55?45 ?1 ? ? cd 1K 0dB ? ?5 ? ? ?mv?5 ?mv?1 ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? ? LINE OUT Electrical Specification 4-2 Main chipset MT1389FXE-S(DTS) MT1389DXE-S(W/O DTS) OR DM-06BXLX-L2 Loader motor driver CD5954 Foryou pick up DVD Loader M5V SDRAM FLASH
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