Rotel RB-976 MkII Bedienungsanleitung

Technical

Manual

SIX CHANNEL POWER AMPLIFIER

RB-976

Table of Contents

Specification

Specification......................................1

Parts List ...........................................2~3

Adjustment........................................ 4

Service Note......................................4

Case Outlines....................................5

PCB Assembly ..................................5~10

Schematic Diagram ..........................11~12

Continuous Power Output Stereo Mode 60 watts/ch into 8 ohms

(20-20 kHz, <0.03%THD)

Continuous Power 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 Distortion <0.03%

(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) Stereo 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 Requirements 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

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

R553.554

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 UTES1H100-FB

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

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-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

DIODE

RESISTOR METAL 1K

RESISTOR METAL 27K

RESISTOR METAL 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

RESISTOR 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)

TRANSISTOR(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

R426

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 TMF1002

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 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 ASSEMBLY

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 METAL 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.25V220UF

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

RELAY

TRANSISTOR(2SC536K-FG)

IC(TIMER)

FUSE CLIP

VARIABLE RESISTOR 50KBX2

SYMBOL PARTS NO. DESCRIPTION SYMBOL PARTS NO. DESCRIPTION

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

R816.817

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-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 TC500V103

041 50USP682 ※

043 TC500V103

041 UTSS1H101-FB

034 RS403L ※

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 100K

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 DIODE

D902.903

D931.932

F901.902

R901

R902

R931

911-.921-.

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

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

MINI FUSE 250VT6.3A

RESISTOR METAL 3.3R

RESISTOR METAL 18K

RESISTOR METAL 47R

FUSE CLIP

HEAT SINKER

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 CORD SET for AUSTRALIA

AC CORD SET for UK

AC CORD SET for CEE

INSIDE CARTON

STYROL MOULDING

SYMBOL PARTS NO. DESCRIPTION SYMBOL 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 substitution (other than original type), may incease risk of fire or electrical shock hazard.

Instruments : DC milli–meter

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 PCB R537

R538X-1280-01 PCB

K33 R637X-1280-02 PCB

K34 R638X-1280-02 PCB

K35 R737X-1280-03 PCB

K36 R738X-1280-03 PCB

Coupling Location Adjust 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 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 replacing 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 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 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.

5 6

2SA1943

2SC5200

2SB631K

2SD600K

2SC536K

2SA608K

2SA1016K

NJM555D

2SC1941 MPC1237HA

PCB Assembly-1Case Outline

7 8

PCB Assembly-2

9 10

PCB Assembly-3

11 12

Schematic Diagram

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