Rotel-RB976MKII-pwr-sm维修电路原理图.pdf

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1、T echnical Manual SIX CHANNEL POWER AMPLIFIER RB-976MK Table of Contents Specification Specification.1 Parts List.23 Adjustment.4 Service Note.4 Case Outlines.5 PCB Assembly.510 Schematic Diagram .1112 Continuous Power Output Stereo Mode60 watts/ch into 8 ohms (20-20 kHz, 0.03%THD) Continuous Power

2、Output Bridged Mono Mode 150 watts/ch into 8 ohms (20-20 kHz, 0.1% THD) Total Harmonic Distortion 0.03% (20Hz-20kHz, 8 ohms) Intermodulation Distortion0.03% (60 Hz : 7 kHz, 4:1) Frequency Response ( 1 dB) 15 Hz-100 kHz Damping Factor (20-20,000 Hz, 8 ohms) 150 Speaker Impedance (combined load) Stere

3、o mode : 4 ohms minimum Bridged Mono mode : 8 ohms minimum Signal to Noise Ratio (IHF A network) 116 dB Input Impedance 22 k Ohms Input Sensitivity 1.5 volt Auto Turn On Threshold Level (if activated) 10 mV input signal Auto Turn Off Delay Time (if activated) 5 minutes with no signal Power Requireme

4、nts USA : 115 Volts, 60 Hz Europe : 230 Volts, 50Hz Power Consumption 700 Watts Dimensions (W x H x D) 440 x 121 x 410 mm 173/8 x 43/4 x 161/8 in Weight 12.7kg, 28 lb SHINSEN-BLD. 4F 10-10 SHINSEN-CHO, SHIBUYA-KU, TOKYO 150-0045, JAPAN Serial. NO. Beginning Quality Uncompromised Y-332A-00115C/S-S Ra

5、dioFans.CN 收音机爱 好者资料库 2 Parts List-1 C501.502 C503.504 C505.506 C507.508 C511.512 C513.514 C515-518 C519.520 C551 D501-504 D551.552 R501.502 R503.504 R505.506 R507.508 R509.510 R511.512 R513.514 R515.516 R517.518 R519.520 R521.522 R523.524 R525.526 R527.528 R529-532 R533-536 R537.538 R539 R551.552 R

6、553.554 R555.556 R557.558 R559 R560 R561 R562 R563 R564 R565 T501-506 T507.508 T509.510 T511-514 T515.516 T551.552 T553.554 601-.701- C401 C407-412 C421 C422 C423 X-1280 PCB ASSEMBLY 041 UTES1H100-FB 044 S50V330PJ 044 S50V220PJ 041 UTES1E101-FB 041 UTES1H010-FB 044 S50V390PJ 044 S50V150PJ 041 UTES1H

7、100-FB 041 UTES1H100-FB 034 T1N4148-86 034 T1N4148-86 054 TMF1001 054 TMF2702 054 TMF3300 054 TMF1501 054 TMF4700 054 TMF6801 054 TMF8201 054 TMF4300 054 TMF47R0 054 TMF3302 054 TMF1002 054 TMF1000 054 TMF2201 054 TMF6801 054 TMF2200 054 NIR2-0.22JF 051 SFR001-222 054 TMF8201 054 TMF2202 054 TMF1501

8、 054 TMF1201 054 TMF1502 054 TMF4702 054 TMF1003 054 TMF4701 034 TTC-503 054 TMF8200 054 TMF3002 054 TMF1501 032 TA1016-FG 032 TC1941-KL 032 TA1016-FG 033 B631-EF 033 D600-EF 032 TC536-FG 032 TA608-FG AS SAME AS 501-. X-1281-01 PCB ASSEMBLY 041 UTES1H101-FB 044 50MSAN104J 042 TP50V183J 041 UTES1H100

9、-FB 044 50MSAN104J CAPACITOR ELEC.50V10UF CAPACITOR STYROL 50V330PF CAPACITOR STYROL 50V220PF CAPACITOR ELEC.25V100UF CAPACITOR ELEC.50V1UF CAPACITOR STYROL 50V390PF CAPACITOR STYROL 50V150PF CAPACITOR ELEC.50V10UF CAPACITOR ELEC.50V10UF DIODE DIODE RESISTOR METAL 1K RESISTOR METAL 27K RESISTOR META

10、L 330R RESISTOR METAL 1.5K RESISTOR METAL 470R RESISTOR METAL 6.8K RESISTOR METAL 8.2K RESISTOR METAL 430R RESISTOR METAL 47R RESISTOR METAL 33K RESISTOR METAL 10K RESISTOR METAL 100R RESISTOR METAL 2.2K RESISTOR METAL 6.8K RESISTOR METAL 220R RESISTOR METAL 2W 0.22R SEMI-FIXED RESISTOR 2.2K RESISTO

11、R METAL 8.2K RESISTOR METAL 22K RESISTOR METAL 1.5K RESISTOR METAL 1.2K RESISTOR METAL 15K RESISTOR METAL 47K RESISTOR METAL 100K RESISTOR METAL 4.7K THERMISTOR RESISTOR METAL 820R RESISTOR METAL 30K RESISTOR METAL 1.5K TRANSISTOR(2SA1016K-FG) TRANSISTOR(2SC1941-KL) TRANSISTOR(2SA1016K-FG) TRANSISTO

12、R(2SB631K-EF) TRANSISTOR(2SD600K-EF) TRANSISTOR(2SC536K-FG) TRANSISTOR(2SA608K-FG) CAPACITOR ELEC.50V100UF CAPACITOR FILM 50V0.1UF CAPACITOR MYLAR 50V0.018UF CAPACITOR ELEC.50V10UF CAPACITOR FILM 50V0.1UF C424 D421-423 K401-404 R401-406 R407-412 R415 R416.417 R418.419 R420 R421 R422 R423 R424 R425 R

13、426 R427 R428 R429 R430 S401 S402.403 S404 T421.422 T423 U421 C951-954 C955 C956 C957 C958 C991.992 D951-954 D955 D956 F991 L951 R951 R952 R953 R954 R955 R956.957 R958 R959 R960 S991 S992 T951-953 U951 R451-453 041 UTES1E101-FB 034 T1N4148-86 066 4TR-2709#3 054 TMF1001 054 TMF1003 054 TMF1502 054 TM

14、F1002 054 TMF1502 054 TMF1002 054 TMF1001 054 TMF2202 054 TMF2203 054 TMF1203 054 TMF2202 054 TMF1002 054 TMF1003 054 TMF1800 054 TMF4702 054 TMF4703 064 4TR-2294 064 C-4606A00 064 C-4660A00 032 TC536-FG 032 TA608-FG 031 PC817B X-1281-02 PCB ASSEMBLY 043 TC500V103 041 UTES1H471 041 UTES1E101-FB 041

15、UTES1E221-FB 042 TP50V103J 044 DE1307E472M 034 T1N4003-TB 034 TRD15JST1 034 T1N4148-86 036 5ST250 022 T-1070N01 054 TMF3901 054 1WS1KJF 054 TMF8203 054 TMF4702 054 TMF1004 054 TMF1003 054 TMF4702 054 2WS470JF 054 TMF2202 061 C-4176A08 063 DH1U-24 032 TC536-FG 031 NJM555D 019 C-3417A X-1281-03 PCB AS

16、SEMBLY 051 4TR-2972 CAPACITOR ELEC.25V100UF DIODE 2P PINJACK RESISTOR METAL 1K RESISTOR METAL 100K RESISTOR METAL 15K RESISTOR METAL 10K RESISTOR METAL 15K RESISTOR METAL 10K RESISTOR METAL 1K RESISTOR METAL 22K RESISTOR METAL 220K RESISTOR METAL 120K RESISTOR METAL 22K RESISTOR METAL 10K RESISTOR M

17、ETAL 100K RESISTOR METAL 180R RESISTOR METAL 47K RESISTOR METAL 470K SLIDE SWITCH (INPUT A) SLIDE SWITCH (INPUT B.C) SLIDE SWITCH (SIGNAL SENSE) TRANSISTOR (2SC536K-FG) TRANSISTOR (2SA608K-FG) PHOTO COUPLER CAPACITOR CERA.500V0.01UF CAPACITOR ELEC.50V470UF CAPACITOR ELEC.25V100UF CAPACITOR ELEC.25V2

18、20UF CAPACITOR MYLAR 50V0.01UF SPARK KILLER DIODE ZENER DIODE DIODE MINI FUSE 250VT250MA SUB TRANSFORMER RESISTOR METAL 3.9K RESISTOR METAL 1W 1K RESISTOR METAL 820K RESISTOR METAL 47K RESISTOR METAL 1M RESISTOR METAL 100K RESISTOR METAL 47K RESISTOR METAL 2W 470R RESISTOR METAL 22K POWER SWITCH REL

19、AY TRANSISTOR(2SC536K-FG) IC(TIMER) FUSE CLIP VARIABLE RESISTOR 50KBX2 SYMBOL PARTS NO.DESCRIPTIONSYMBOL PARTS NO.DESCRIPTION RadioFans.CN 收音机爱 好者资料库 3 Parts List-2 D481-483 D484.485 D486 D487.488 D489 D490.491 D492 K431 C801.802 C811 C812 C813 D811 D812 K811 L801.802 R801.802 R811 R813 R815 R816.81

20、7 R818 R819 R820 R821 S811 T811 U811 831-.861-. C901-904 C905.906 C931.932 C933 D901 X-1281-04 PCB ASSEMBLY 034 LTL4262N 034 LTL4296N 034 LTL4262N 034 LTL4296N 034 LTL4262N 034 LTL4296N 034 LTL4262N 019 4TR-3213 X-1281-05 PCB ASSEMBLY 067 C-4635A02 X-1282-01 PCB ASSEMBLY 044 50MSAN104J 041 UTES1E101

21、-FB 041 UTES1E470-FB 041 UTES1H4R7-FB 034 T1N4148-86 034 TRD5.6JST1 067 C-4493A01 021 TRL-331 054 2WS10JF 054 TMF1003 054 TMF5602 054 TMF1502 054 TMF1203 054 2WS1.2KJF 053 CR14-104J-A 053 CR14-474J-A 054 TMF1502 063 DH2TU-24 032 TC536-FG 031 MPC1237HA AS SAME AS 801-. X-1282-02 PCB ASSEMBLY 043 TC50

22、0V103 041 50USP682 043 TC500V103 041 UTSS1H101-FB 034 RS403L LED LED LED LED LED LED LED LED HOLDER 2P TERMINAL BLOCK CAPACITOR FILM 50V0.1UF CAPACITOR ELEC.25V100UF CAPACITOR ELEC.25V47UF CAPACITOR ELEC.50V4.7UF DIODE ZENER DIODE SPEAKER TERMINAL SPEAKER COIL RESISTOR METAL 2W 10R RESISTOR METAL 10

23、0K RESISTOR METAL 56K RESISTOR METAL 15K RESISTOR METAL 120K RESISTOR METAL 2W 1.2K RESISTOR CARBON 100K RESISTOR CARBON 470K RESISTOR METAL 15K RELAY TRANSISTOR(2SC536K-FG) IC(PROTECTION) CAPACITOR CERA.500V0.01UF CAPACITOR ELEC.50V6800UF CAPACITOR CERA.500V0.01UF CAPACITOR ELEC.50V100UF BRIDGED DI

24、ODE D902.903 D931.932 F901.902 R901 R902 R931 911-.921-. 034 T1N4003-TB 034 T1N4003-TB 036 5ST6.3 054 TMF3R30 054 TMF1802 054 TMF47R0 069 C-3417A AS SAME AS 901-. HEAT SINKER ASSEMBLY 017 SQ4-16A00 019 TO-220 019 TO-3PL 032 D600-EF 033 A1943-RO 033 C5200-RO OTHERS 011 FP-512 012 4TSA-7 012 SD4-16A00

25、 014 4TR-2797#3 014 SQ3-15A00 015 RP-367 019 4TR-2823#2 019 4TSH-19#2 022 T-1076N01 034 SEL1124R 069 C-4629A01 072 C-4621A01 072 C-4622A01 072 C-4623A01 072 C-4624A01 081 SQ4-31A00 081 Z-203 DIODE DIODE MINI FUSE 250VT6.3A RESISTOR METAL 3.3R RESISTOR METAL 18K RESISTOR METAL 47R FUSE CLIP HEAT SINK

26、ER INSULATION SHEET (S) INSULATION SHEET (L) TRANSISTOR(2SD600K-EF) POWER TRANSISTOR(2SA1943-RO) POWER TRANSISTOR(2SC5200-RO) FRONT PANEL ASSY KNOB 11F PUSH BUTTON 12F ORNAMENT SIDE BOARD UPPER COVER REAR CHASSIS PLASTIC FOOT 24F PLASTIC FOOT 50F POWER TRANSFORMER LED AC INLET AC CORD SET for STD AC

27、 CORD SET for AUSTRALIA AC CORD SET for UK AC CORD SET for CEE INSIDE CARTON STYROL MOULDING SYMBOL PARTS NO.DESCRIPTIONSYMBOL PARTS NO.DESCRIPTION NOTE ON SAFTY : Symbol Fire or electrical shock hazard. Only original parts should be used to replaced any part marked with symbol . Any other component

28、 substitution (other than original type), may incease risk of fire or electrical shock hazard. 4 Instruments : DC millimeter Notes : Prior to Bias Adjustment, run about 5minutes with rated output (8 ohms) And warm up Power Transistor and Heat Sink.Set input off. Step K31 K32 X-1280-01 PCBR537 R538X-

29、1280-01 PCB 1 2 K33R637X-1280-02 PCB3 K34R638X-1280-02 PCB4 K35R737X-1280-03 PCB5 K36R738X-1280-03 PCB6 CouplingLocationAdjust forAdjust DC milli-voltmeter Reads 4mV Adjustment Service Note Cautions during Inspection and Repair 1. Keep in mind the safety warnings The safety instructions are shown as

30、 the labels or printings on the exterior, the inside chassis or the parts, etc. Refer to the instructions when proceeding with inspection or repair. 2. Use only the specified parts for replacement The selected parts are used at critical area to reduce fire hazard or electrical shock. So when replaci

31、ng these parts where designaged with marks or marks on the schematic diagram or the parts list, ensure to use only the same parts. 3. Ensure to dress back the AC (Mains) cord to the original position If for some reason, the AC cord is moved or partially disassembled, ensure to re- route or assemble

32、back to the original position. The AC cord area is protected and secured by tubing and insulation materials for the sake of safety, so that no loose wire will touch and cause fire hazard and electrical shock. 4. Check for safety aspects after inspection or repair Ensure all parts, such as screws or

33、wires, removed during inspection or repair are secured back to the original positions, and check visually for any anomaly. Also check for any electrical leakage or resistance to maintain the safety. 56 2SA1943 2SC5200 2SB631K 2SD600K 2SC536K 2SA608K 2SA1016K NJM555D 2SC1941MPC1237HA PCB Assembly-1Case Outline 78 PCB Assembly-2 910 PCB Assembly-3 1112 Schematic Diagram