Onkyo-DTR8_2-avr-sm 电路图 维修手册.pdf

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1、Oct, 2001 Ref. No.3713 DTR-8.2 AV Amplifier Master VolumeStandby/On Power OnO f f Video 1Video 3TapeFMAMPhonoCDDVDVideo 2Video 4Video 5 Zone 2()GRN Rec ( )RED Pure AudiopsamplingU Standby Display Audio Selector Direct/ Pure Audio Push To Open DTR-8.2 SERVICE MANUALSERVICE MANUAL Black model 120V AC,

2、 60HzBMDD 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 MANUAL. MAKE LEAKAGE-CURRENT OR RESISTANCE M

3、EASUREMENTS 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 DTR-8.2 SPECIFICATIONS AMPLIFIER SECTION Continuous Average Power output (FTC) All channels:110 watts per channel min. RMS at 8 ohms, 2

4、 channels driven from 20 Hz to 20 kHz with no more than 0.08% total harmonic distortion. 145 watts min. RMS at 6 ohms, 2 channels driven from 1 kHz with no more than 0.1% total harmonic distortion. Continuous Power output (DIN) 150 watts at 6 ohms Maximum Power output (EIAJ)180 watts at 6 ohms Dynam

5、ic Power Output (Stereo) 2 280 watts at 3 ohms 2 220 watts at 4 ohms 2 140 watts at 8 ohms Total Harmonic Distortion:0.08% at rated power 0.08% at 1 Watt output IM Distortion:0.08% at rated power 0.08% at 1 Watt output Damping Factor:60 at 8 ohms Input Sensitivity and Impedance PHONO:2.5 mV, 50 kohm

6、s LINE (CD, TAPE, DVD, VIDEO 1-5):200 mV, 50 kohms MULTICHANNEL INPUT (FRONT L/C/R, SURROUND L/R, SURROUND BACK L/R): 200 mV, 50 kohms (SUBWOOFER):36 mV, 50 kohms COAXIAL 1, 2, 3 (DIGITAL):0.5 Vp-p, 75 ohms DVD, VIDEO 1, 2, 3, 4, 5:1 Vp-p, 75 ohms 1 Vp-p, 75 ohms (Y) 0.28 Vp-p, 75 ohms (C) COMPONENT

7、 VIDEO 1, 2:1 Vp-p, 75 ohms (Y) 0.7 Vp-p, 75 ohms (PB, PR) Output Level and Impedance Rec out (TAPE, VIDEO 1, 2): 200 mV, 470 ohms Pre out:1 V, 470 ohms ZONE 2 OUT:100mV, 470 ohms VIDEO (VIDEO 1, 2, MONITOR OUT, ZONE 2 OUT):1 Vp-p, 75 ohms 1 Vp-p, 75 ohms (Y) 0.28 p-p, 75 ohms (C) COMPONENT VIDEO OU

8、T:1 Vp-p, 75 ohms (Y) 0.7 Vp-p, 75 ohms (P Phono Overload:120 mV RMS at 1 kHz, 0.5% T.H.D. Frequency Response:5 Hz to 100 kHz : +1/3 dB (CD in Direct mode) RIAA Deviation:20 Hz to 20 kHz : 0.8 dB Tone Control Bass:10 dB at 50 Hz Treble:10 dB at 20,000 Hz Signal-to-Noise Ratio (Stereo) Phono:80 dB (I

9、HF A, 5 mV input) CD/Tape:110 dB (IHF A, 0.5 V input) TUNER SECTION FM Tuning Range:87.5 108.0 MHz (50 kHz steps) Usable Sensitivity Mono:11.2 dBf, 1.0 V (75 ohms IHF) 0.9 V (75 ohms DIN) Stereo:17.2 dBf, 2.0 V (75 ohms IHF) 23 V (75 ohms DIN) 50 dB Quieting Sensitivity Mono:17.2 dBf, 2.0 V (75 ohms

10、) Stereo:37.2 dBf, 20 V (75 ohms) Capture Ratio:2.0 dB Image Rejection Ratio40 dB IF Rejection Ratio:90 dB Signal-to-Noise Ratio Mono:76 dB Stereo:70 dB Alternate Channel Attenuation:55 dB Selectivity:50 dB (DIN) AM Suppression Ratio:50 dB Total Harmonic Distortion Mono:0.2% Stereo:0.3% Frequency Re

11、sponse:30 Hz 15 kHz, 1.0 dB Stereo Separation:45 dB at 1 kHz 30 dB at 100 Hz 10 kHz AM Tuning Range:5301,710 kHz (10 kHz steps) Usable Sensitivity:30 V Image Rejection Ratio:40 dB IF Rejection Ratio:40 dB Signal-to-Noise Ratio:40 dB Total Harmonic Distortion:0.7% GENERAL Power Supply:AC 120 V, 60 Hz

12、 Power Consumption:7.8 A Dimensions (W H D):17-1/8 6-7/8 18-1/8 Weight:38.4 lbs. REMOTE CONTROLLER Transmitter:Infrared Signal range:Approx. 5 meters, 16 ft. Power supply:Two “AA” batteries (1.5 V 2) Specifications and features are subject to change without notice. B, PR) RadioFans.CN 收音机爱 好者资料库 DTR

13、-8.2 SERVICE PROCEDURES 1. Replacing the fuses This symbol located near the fuses indicates that the fuse used is fast operating type. For continued protection against fire hazard, replace with same type fuse. For fuse rating refer to the marking adjacent to the symbol. Ce symbole indique que le fus

14、ible utlise est a rapide. Pour une protection permanente, nuntiliser que fusibles de meme type. Ce darnier est la qu le present symbol est appse. CIRCUIT NO. PART NO. DESCRIPTION F901 252196 F9501,F9502 252160 or 252254 F9503,F9504252158 or 252252 12A-UL/T-314 2.5A-UL/T-237 or 2.5A-T/UL-ST2 1.6A-UL/

15、T-237 or 1.6A-T/UL-ST2 2. To initialize the unit This device employs a microprocessor to perform various functions and operations. If interference generated by an external power supply, radio wave, or other electrical source results in accident which causes the specified operations and functions to

16、operate abnormally. To perform a result, please follow the procedure below. 1.Press and hold down the VIDEO 1 button, then press the STANDBY/ON button. 2.After clear is displayed, the preset memory and each mode stored in the memory, such as surround, are initialized and will return to the factory s

17、etting. 3. Safety-check out After correcting the original service problem, perform the following safety check before releasing the set to the customer. Connect the insulating-resistance tester between the plug of power supply cord and screw on the back panel. Specifications: 3.3Mohm10% at 500V. 4. M

18、emory Preservation This unit does not require memory preservation batteries. A built-in memory power back-up system preserv es the contents of the memory during power failures and even when the unit is unplugged. The unit must be plugged in order to charge the back-up system. The memory preservation

19、 period after the unit has been unplugged varies depending on climate and placement of the unit. On the average, memory contents are protected over a period of a few weeks after the last time the unit has been unplugged. This period is shorter when the unit is exposed to a highly humid climate. Radi

20、oFans.CN 收音机爱 好者资料库 DTR-8.2 A 1 2 3 4 5 BCD BLOCK DIAGRAM 1 D C 2 4 V 4 A I N S C O M P R E C / Z 2 C O M P I N P C R E C / Z 2 C I N P Y R E C / Z 2 R I G H T R E C / Z 2 YC V I D E O 1 YC S - V I D E O O U T P U T M O N I T O R YC V I D E O 2 YC V I D E O 5 ( F R O N T ) YC S - V I D E O I N P U T

21、 D V D YC V I D E O 1 YC V I D E O 2 YC V I D E O 3 YC V I D E O 4 I R D E - M O D U L A T O R M U T E M U T E I R 5 6 K R E - M O D U L A T O R I S D E T Z O N E 2 L I N E O U T L R L V I D E O 2 R V I D E O 5 L R ( F R O N T ) 2 4 . 5 7 6 M H Z R E C O U T L T A P E R L V I D E O 1 R C O M P O S I

22、 T E V I D E O O U T M O N I T O R V I D E O 1 V I D E O 2 Z O N E 2 V I D E O 3 L R V I D E O 4 L R V I D E O 1 L R V I D E O 2 L R T A P E L R D V D L R A U D I O I N P U T P H O N O L R C D L R C O A X I A L 1 C O A X I A L 2 C O A X I A L 3 C O M P O N E N T V I D E O 1 Y C B C R I N P U T 2 Y C

23、 B C R V I D E O 3 V I D E O 4 V I D E O 5 ( F R O N T ) C O M P O S I T E V I D E O I N P U T D V D V I D E O 1 V I D E O 2 I R O U T 1 4 0 K I R O U T 5 6 K I R O U T 2 4 0 K O P T I C A L 1 D I G I T A L A U D I O O U T P U T O P T I C A L 2 O P T I C A L 4 O P T I C A L 3 O P T I C A L 1 O P T I

24、 C A L 2 D I G I T A L A U D I O I N P U T O P T I C A L V I D E O 5 ( F R O N T ) C S 4 9 3 0 0 2 P O S T P R O C E S S I N G ( T H X C I N E M A ) ( T H X S U R R O U N D E X ) C S 4 9 3 0 0 2 D E C O D I N G ( A C - 3 , D T S ) ( D T S - E S ) ( P L I I , N E O : 6 ) Z O N E D Z O N E C Z O N E B

25、 Z O N E A A - B U S T C 9 2 4 6 F 2 N D P L L F M / A M T U N E R P A C K M P D 4 4 1 0 0 0 S R A M 1 M M I N . M B M 2 9 L V 0 0 2 F L A S H R O M 2 M M I N . M B M 2 9 L V 0 0 2 F L A S H R O M 2 M M I N . L E D D R I V E R M 6 6 0 0 4 F P F L D R I V E RO S D L C 7 4 7 6 1 - 9 1 8 9 A K 4 3 5 6

26、1 9 2 / 2 4 D / A A K 4 5 2 8 9 6 / 2 4 D / A ( 2 / 2 ) A K 4 5 2 8 9 6 / 2 4 A / D ( 1 / 2 ) A K 4 1 1 4 D I R 5 0 K L P F 5 0 K L P F 5 0 K L P F 5 0 K L P F 5 0 K L P F 5 0 K L P F 5 0 K L P F 5 0 K L P F B P S W B P S W C - S L - C - S R - R X 0 R X 1 R X 2 R X 3 T X 0 R X 4 R X 5 D A U X R X 6

27、R X 7 - 6 d B - 6 d B Z o n e 2 L E D R e c O u t L E T C 9 2 7 4 N - 0 0 8 T C 9 2 7 3 F - 0 1 7 T C 9 2 7 3 N - 0 0 4 R N 1 2 4 1 x 2 2 P A L N T S C S E P S E P Y - C Y - C M I X Y - C R N 1 2 4 1 x 6 F L T U B E V o l u m e C o n t r o l K e y M a t r i x0 d B 6 d B 6 d B 6 d B 6 d B 6 d B 6 d B

28、 7 4 H C 4 0 5 1 x 6 M U T E M U T E M U T E M U T E S U B M I C R O - P R O C E S S O R M A I N M I C R O - P R O C E S S O R DTR-8.2 BLOCK DIAGRAM 2 A 1 2 3 4 5 BCD S U R R O U N D S P E A K E R S L E F T R I G H T S U R R O U N D B A C K S P E A K E R S / Z O N E 2 S P E A K E R S R I G H T / B A

29、 C K L E F T M U L T I C H A N N E L I N P U T LRCS WS LS RS B LS B R F R O N T S P E A K E R S R I G H T L E F T C E N T E R A C O U T L E T F U S E R S 2 3 2 R I G H T P R E O U T L E F T S U R R O U N D L E F T S U R R O U N D R I G H T S U R R O U N D B A C K / Z O N E 2 L E F T S U R R O U N D

30、B A C K / Z O N E 2 R I G H T C E N T E R S U B W O O F E R C O O L I N G F A N 1 2 V T R I G G E R C O N T R O L I R D E M O - D U L A T O R 1 2 V T R I G G E R + B 3 R E L A Y + B 2 R E L A Y D R I V E R F L A C F L T U B E F L A C M A I N A M P + B 1 / - B 1 - 2 7 V - V P - 1 5 V A U D I O - 5 V

31、V I D E O + 5 V V I D E O + 5 V D S P + 1 5 V A U D I O R E L A Y D R I V E R V O L T A G E S E N S O R C U R R E N T S E N S O R T H E R M A L S E N S O R F A N D R I V E R R I I N T E R F A C E + 5 . 6 V S T A N D B Y C O M P O N E N T V I D E O O U I T P U T Y C B C R H E A D P H O N E R E M O T

32、E S E N S O R I R O U T I R I N R I T 9 0 2 T 9 0 1 A C I N T O N E N J U 7 3 0 6 G N J U 7 3 0 6 G - 1 - 1 L E D D R I V E R M P D 4 7 2 1 G S R S 2 3 2 I N T E R F A C E T C 9 4 A 0 7 F T C 9 4 A 0 7 F T C 9 4 A 0 7 F M A S T E R V O L U M E T C 9 4 A 0 7 F C U T B O O S T T C 9 4 8 2 F M C L B L

33、T L D L B R T R M C R D R Z 2 R Z 2 L D S B L M C S R M C S B L D S W M C S W D C M C C D S B R M C S B R D S R D S L M C S L B P L S S W - R B P L S S W - L B Y P A S S B Y P A S S C - L S L - L C - R S R - R B Y P A S S B Y P A S S T V - 5 P O W E R S W T V - 8 A 1 2 V T R I G G E R H P E N B P L

34、S Z o n e 2 L E D R e c O u t L E D 1 5 d B / 3 0 d B T C 9 1 6 3 T C 9 1 6 4 + 2 9 d B P o w e r A m p l i f i e r + 2 9 d B 1 1 d B 1 1 d B + 2 9 d B + 2 9 d B + 2 9 d B + 2 9 d B + 2 9 d B M U T E M U T E M U T E M U T E M U T E M U T E M U T E M U T E M U T E M U T E Z O N E 2 B DTR-8.2 ADJUSTME

35、NT AND CONFIRMATION PROCEDURES 1 Idling current adjustment Before Idling adjustment, turn the trimming resistors R6040 to R6046 to counter clockwise. Connect the DC voltmeter to sockets P6080 to P6086. After turn POWER to ON, adjust the trimming resistors R6040, R6041 and R6042 so that the reading o

36、f voltmeter becomes 7.0 mV. (Front and center channels) Adjust the trimming resistors R6043, R6044, R6045 and R6046 so that the reading of After adjustment, attach the top cover. voltmeter becomes 5.0 mV. (Surround and surround back channels) Confirm the voltage of points above after about five minu

37、tes. Front and center channels When less than 9.0 mV, readjust the resistors above so that the voltage becomes 9.0 mV. When 9.0 mV to 11.0 mV, you are not necessary to adjust. When more than 11.0 mV, readjust the resistors above so that the voltage becomes 11.0 mV. Surround and surround back channel

38、s When less than 6.0 mV, readjust the resistors above so that the voltage becomes 6.0 mV. When 6.0 mV to 8.0 mV, you are not necessary to adjust. When more than 8.0 mV, readjust the resistors above so that the voltage becomes 8.0 mV. Note: No load and No signal L ch. P6080R6042P6082R6041P6081 R6043R

39、6044R6045R6046P6083P6084P6085P6086 R ch.C ch. SR ch.SL ch.SBL ch.SBR ch. NAAF-7250 R6040 +ID -ID +ID -ID +ID -ID +ID -ID +ID -ID +ID -ID +ID -ID Confirmation of protection circuit 1. Confirmation of operation of speaker relay Confirm that the speaker relays turn ON approximate. 5 seconds after the p

40、ower switch is turned ON. Confirm that the speaker relays turn OFF immediately after the power switch is turned OFF. 2. Confirmation of DC detection circuit Press and hold down CD button, then press STANDBY/ON and DISPLAY buttons to set the unit to TEST-1 mode. After TEST-1 on the FL tube light on,

41、press VIDEO 1 button to set the unit to TEST-1-00. Apply DC 1.5 to 3V to MULTI CHANNEL INPUT terminal with no load. Confirm that the speaker relay turns OFF. Apply DC -1.5 to -3V to MULTI CHANNEL INPUT terminal with no load. Confirm that the speaker relay turns OFF. Caution: Dont apply DC voltage mo

42、re than 1 sec. DTR-8.2 ADJUSTMENT AND CONFIRMATION PROCEDURES 2 3. Confirmation of Current detection circuit Set the unit to TEST-1-00. Connect the differentiating circuit and apply the 200Hz square signal to MULTI CHANNEL INPUT terminal. of each channel. Adjust the attenuator or Volume so that the

43、output level becomes 35V p-p. Confirm that the speaker relay does not turn OFF when a 3.0 ohm load is connected. Confirm that the speaker relay turns OFF when a 1.5 ohm load is connected. CR OSCILLATOR DIFFEREN- TIATING CIRCUIT ATTENU- ATOR UNIT SPEAKER TERMINAL MULTI CHANNEL INPUT INPUT OUT- PUT 3.

44、3k 10k 1SS1333.3k GND 0.01F 0.1F OSCILLO- SCOPE Differentiating Circuit 200Hz SQUARE 35Vp-p Confirmation of fan Set the unit to TEST-1-00. Apply the 1kHz -30dBV signal to the left channel of MULTI-CH terminal with no load. Confirm that the fan rotates slow speed after few seconds. Connect the 1.2 ko

45、hm/1W resistor between terminals COM and TH-1 of P6401 with no input signal. Confirm that the fan rotates slow speed after few seconds. Next apply the 1kHz -30dBV signal to the left channel of MULTI-CH terminal with no load. Confirm that the fan rotates high speed after few seconds. Connect the 1.2

46、kohm/1W resistors between terminals COM-TH-1 and COM-TH-2 of P6401 respectively with no input signal. Confirm that the fan rotates high speed after few seconds. P6931 P7701B P9503A JL6933A P6401 COM TH1 TH2 NAETC-7238 DTR-8.2 ADJUSTMENT AND CONFIRMATION PROCEDURES 3 Test Mode 1. Turn POWER button on

47、. 2. Press and hold down CD button, then press DISPLAY and STANDBY/ON buttons. 3. After TEST-1 on the FL tube is displayed, press CD button to set the unit to the test mode of FL tube. Note: VIDEO 1:TEST-1 VIDEO 2 :TEST-2 ZONE2: UP VIDEO 3 :TEST-3 VIDEO 4:TEST-4 REC OUT: DOWN Test-X YZ Item FL TUBE

48、The segments of even number light on . All segments light on. FEDCBA987654321 light on. AA BB CC DD EE light on. Test mode of FL tube REC OUTZONE 2 Press POWER button to finish the test mode of FL tube. AA:Model 89:TX-DS898 79:TX-DS797 BB:Video Mode NS: NTSC PL: PAL AUTO CC:12V TRIGGER TR: Available

49、 :No available DD:RDS RD: Available :No available The segments of odd number light on . Confirmation of voltage sensor 1. Set the unit to TEST-3-4. 2. Apply the signal 1kHz, -15dBV to the MULTI-CH input. Confirm that the FM STEREO is displayed. Confirm the all channels except SUBWOFFER. 3. When connect the resistor 1.2 kohm/1 W between the terminals COM and TH1 of P6401, confirm that MEMORY light on. Note: No input signal. 4.When change set the unit to TEST-