Rotel-RB981-pwr-sm维修电路原理图.pdf

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1、T echnical Manual STEREO POWER AMPLIFIER RB-981 Table of Contents Specification Specification.1 Wiring Diagram.2 Parts List.3 Adjustment.4 PCB Assembly.5,6 Schematic Diagram.7,8 Continuous Power Output (20-20 kHz, 0.03%, 8 ohms) 130 watts/ch. (20-20 kHz, 0.05%, 4 ohms) 170 watts/ch. Bridged Mono Pow

2、er Output (20-20 kHz, 0.1% THD, 8 ohms) 360 watts Total Harmonic Distortion (20 Hz-20 kHz, 8 ohms) 0.03% Intermodulation Distortion (60 Hz : 7 kHz, 4:1) 0.03% Frequency Response 10-100,000 Hz,1 dB Damping Factor (20-20,000 Hz, 8 ohms) 500 Speaker Impedance (Normal mode) 4 ohms minimum (Bridged mode)

3、 8 ohms minimum Signal to Noise Ratio (IHF A network) 120 dB Input Impedance/Sensitivity 33 k Ohms/1.0 volt Power Requirements 115 Volts, 60 Hz or 230 Volts, 50 Hz Power Consumption 400 Watts Dimensions (W, H, D) 440 x 121 x 327 mm 17.38 x 4.76 x 12.87 Weight(net) 10.3 kg., 22.66 lb. BUNZAN-SHINSEN-

4、BLD. 4F 10-10 SHINSEN-CHO, SHIBUYA-KU, TOKYO 150-0045, JAPAN Serial. NO. Begining 2 Wiring Diagram Quality Uncompromised RadioFans.CN 收音机爱 好者资料库 SYMBOL PARTS NO.DESCRIPTIONSYMBOL PARTS NO.DESCRIPTION Parts ListAdjustment Instruments : DC millivoltmeter Notes : Prior to Bias Adjustment, run about 5mi

5、nutes with rated output(8ohms) and warm up Power Transistor and Heat Sink. Set input off. Step Coupling Plus Lead TP11 TP21 TP12 TP22 X124001 PCB X124001 PCB VR601 VR602 1 2 Minus Lead LocationAdjustAdjust for DC millivoltmeter reads 5mV E C B B C E E E C C B B 2SA1376 2SC3478 2SA1209 2SC2911 2SA101

6、6K 2SC2362K 2SA1667 2SC4381 2SD19532SA1492 2SC3856 C601,602 041 50BGF4R7M C603,604 044 TFKP2100V681H C605,606 044 LFSC160V221H C607,608 041 25BGF100M C609,610044 LFSCl60V331H C611,612 041 50BGF10M C613616 044 LFSC160V561H C617,618 044 LFSC160V471H C623,624 044 MKT18100V104K C802 041 GS25V101B C803 0

7、41 GS63V221D C804 041 GS63V220B C901908 043 LTC500V103 C909912 041 ALC20S1023XX D601608 034 LT1N414886 D609612 034 LT1N4003TB D80l 034 LT1N414886 D802 034 TRD6. 2JST1 D803806 034 LT1N4003TB D807,808 034 LT1N414886 D901,902 034 LBR84 F601604 036 5ST5 PJ1 066 L4TR2487#8 PJ2 066 L4TR2487#7 Q601606 033

8、LT2SC2362KAAFG Q607612 033 LT2SA1016KAAFG Q613,614 033 L2SA1209ST Q615,616 033 L2SC2911ST Q619,620 033 T2SC3478TLKU Q621,622 033 T2SA1376TLKU Q801803 033 LT2SC2362KAAFG R601,602 054 LEE10102 R603,604 054 LEE10333 R605,606 054 LEE10471 R607610 054 LTMK201K5FECZ R611,612 054 LTMK2220RFECZ R613,614 054

9、 LTMF1/45600F R615618 054 LTMK201K5FECZ R619,620 054 LTMK2220RFECZ R621,622 054 LTMK2047KFECZ R623,624 054 LTMK2100RFECZ R625,626 054 LTMF1/46801F R627,628 054 LTMF1/43901F R629,630 054 LTMK2100RFECZ R631,632 054 LTMK2001KFECZ R633,634 054 LTMK2047RFECZ R635646 054 NIR20. 22JF R647,648 054 2WS10JF R

10、651,652 054 LTMK2018KFECZ R653,654 054 LTMF3300 R655658054 LTMK2220RFECZ CAP, ELEC. 50V4. 7UF CAP, FILM 100V680PF CAP, STYROL 160V220PF CAP, ELEC. 25V100UF CAP, STYROL 160V330PF CAP, ELEC. 50V10UF CAP, STYROL 160V560PF CAP, STYROL 160V470PF CAP, FILM 100V0. 1UF CAP, ELEC. 25V100UF CAP, ELEC. 63V220U

11、F CAP, ELEC. 63V22UF CAP, CERA. 500V0. 01UF CAP. ELEC. 63V10000UF DIODE DIODE DIODE ZENER DIODE DIODE DIODE POWER DIODE MINI FUSE 250V5A 1P PIN JACK(WHT) 1P PIN JACK(RED) TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR TRANSISTOR R, METAL 1K R, METAL 33K R, METAL 470R R, METAL 1% l

12、. 5K R, METAL l% 220R R, MRS25 560R R, METAL l% l. 5K R, METAL 1% 220R R. METAL l% 47K R, METAL 1% 100R R, MRS25 6. 8K R, MRS25 3. 9K R, METAL l% 100R R, METAL l% 1K R, METAL l% 47R R, METAL 2W 0.22R R, METAL 2W 10R R, METAL l% 18K R, METAL 330R R, METAL 1% 220R X124001 PCB ASSEMBLY R661 054 LTMK201

13、8KFECZ R801054 1WS2. 7KJF R802053 CR14101JA R803053 CR14104JA R804053 CR14224JA R805 053 CR14104JA R806 053 CR14333JA R807 053 CR14104JA R808 053 CR14272JA R809, 810 054 1WS6. 8KJF R811, 812 053 CR14104JA R813, 814 053 CR14183JA R815, 816 053 CR14392JA R817, 818 053 CR14273JA R819 054 1WS6. 8KJF RY8

14、01 063 EG224NU S601603 068 TD03SG SP1 067 C4493A00 TH601, 602 034 TD5C350D VR601, 602 051 LVM6CKPV1S2.2K 019 TO126 069 C3417A C001044 DE7150F472M S00l061 LC4176A02 Q617, 618032 2SD1953 Q623, 624033 2SC4381OY Q625, 626033 2SA1667OY Q627632033 2SC3856 OPY Q635 640 033 2SA1492OPY 019 TO220 019 TO3P 017

15、 RM408B00 011 TFP801A 012 L4TQF15 014 C4550A13 014 L4TR2797#3 014 RM407A00 015 RP334 019 L4TSH19#2 019 4TR2823#2 022 T1052W04 072 L4TR670#5 072 LC3763 072 C4572A0l 072 C4573A01 081 LTZ183 081 RM411B00 R, METAL 1% 18K R, METAL 1W 2.7K R, CARBON 100R R, CARBON 100K R, CARBON 220K R, CARBON 100K R. CAR

16、BON 33K R. CARBON 100K R, CARBON 2.7K R, METAL 1W 6.8K R, CARBON 100K R, CARBON 18K R, CARBON 3.9K R, CARBON 27K R, METAL 1W 6.8K RELAY 3P CONNECTOR WAFER SPEAKER TERMINAL THERMISTER SEMIFIXED RESISTOR INSULATION SHEET FUSE CLIP SPARK KILLER POWER SWITCH TRANSISTOR TRANSISTOR TRANSISTOR POWER TRANSI

17、STOR POWER TRANSISTOR INSULATION SHEET(S) INSULATION SHEET(L) HEAT SINKER BOARD FRONT PANEL ASSY POWER BUTTON 14X14 UPPER COVER ORNAMENT SIDE BOARD BOTTOM BOARD REAR CHASSlS PLASTIC FOOT 50F PLASTIC FOOT 24F POWER TRANSFORMER AC CORD for STD AC CORD for AUSTRALIA AC CORD for UK AC CORD for CEE STYROL SIDE MOULDING INSIDE CARTON X124002 PCB ASSEMBLY HEAT SINKER ASSEMBLY OTHERS 43 RadioFans.CN 收音机爱 好者资料库 65 Schematic Diagram 78