How it Works
Rotel
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RB-1070
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Technical Manual
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User Manual 2
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Rotel rb1070 service manual

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Page 1
Quality Uncompromised
®
Technical
Manual
Table of Contents
Specification......................................1
Parts List ...........................................2
Case Outlines....................................3
PCB Assembly ..................................3~4
Schematic Diagram ..........................5~6
Specification
Continuous Power Output Stereo Mode 130 watts/ch into 8 ohms
   (20 - 20 kHz, <0.03% THD)
Bridged Mono Power Output 300 watts/ch into 4 ohms
   (20 - 20 kHz, <0.1% THD)
Total Harmonic Distortion <0.03 %
    (20 Hz : 20 kHz, 8 ohms)
Intermodulation Distortion <0.03 %
    (60 Hz : 7 kHz, 4 : 1)
Frequency Response (+0.5 db, -3 db) 4 Hz - 100 kHz Damping Factor (20-20,000 Hz, 8 ohms) 500 Speaker Impedance (combined load) 4 ohms minimum Signal to Noise Ratio (IHF A network) 120 dB Input Impedance/Sensitivity 33 k ohms/1.0 volt Power Requirements USA: 115 volts, 60 Hz
Power Consumption 400 Watts Dimensions (W x H x D) 430 x 121 x 350 mm
Weight (net) 11.9 kg/26.25 lb.
STEREO POWER AMPLIFIER
RB-1070
Europe: 230 volts, 50 Hz
1615/16 x 43/4 x 133/4 in
SHINSEN-BLD. 4F 10-10 SHINSEN-CHO, SHIBUYA-KU, TOKYO 150-0045, JAPAN
Serial. NO. Beginning
Y-323A-00015C/S-S
Page 2
Parts List
SYMBOL PARTS NO. DESCRIPTION SYMBOL PARTS NO. DESCRIPTION
C601,602 041 50BGF4R7M CAP,ELEC.50V4.7UF
X-1240-01 PCB ASSEMBLY
C603,604 044 TFKP2-2A681H CAP,FILM100V680PF C605,606 044 FSC160V221H CAP,STYROL160V220PF C607,608 041 25BGF100M CAP,ELEC.25V100UF C609,610 044 FSC160V331H CAP,STYROL160V330PF
C611,612 041 50BGF10M CAP,ELEC.50V10UF C613-616 044 FSC160V561H CAP,STYROL160V560PF C617,618 044 FSC160V471H CAP,STYROL160V470PF C623,624 044 KT18-2A104K CAP,FILM100V0.1UF C802 041 UTSS1E101-FB CAP,ELEC.25V100UF
C803 041 UTES1J221 CAP,ELEC.63V220UF C804 041 UTES2A220-FB CAP,ELEC.100V22UF C901-908 043 TC500V103 CAP,CERA.500V0.01UF C909-912 041 ALC20S1023XX CAP,ELEC.63V10000UF D601-608 034 T1N4148-86 DIODE
D609-612 034 T1N4003-TB DIODE D801 034 T1N4148-86 DIODE D802 034 TRD6.2JST1 ZENER DIODE D803-806 034 T1N4003-TB DIODE D807,808 034 T1N4148-86 DIODE
D901,902 034 BR84 BRIDGED DIODE F601,602 036 5ST5 MINI FUSE 250V T5A PJ1 066 4TR-2487#8 1P PINJACK(WHT) PJ2 066 4TR-2487#7 1P PINJACK(RED) Q601-606 033 TC2362-FG TRANSISTOR
R805 053 CR14-104J-A R,CARBON 100K R806 053 CR14-333J-A R,CARBON 33K R807 053 CR14-104J-A R,CARBON 100K R808 053 CR14-272J-A R,CARBON 2.7K R809,810 054 1WS6.8KJF R,METAL 1W 6.8K
R811,812 053 CR14-104J-A R,CARBON 100K R813,814 053 CR14-183J-A R,CARBON18K R815,816 053 CR14-222J-A R,CARBON 2.2K R817,818 053 CR14-273J-A R,CARBON 27K R819 054 1WS6.8KJF R,METAL 1W 6.8K
RY801 063 V23106-24 RELAY SP1 067 C-4493A00 SPEAKER TERMINAL TH601,602 034 TTC-503 THERMISTOR VR601,602 051 SFR001-222 SEMI-FIXED RESISTOR 2.2K
017 C-4401A01 SUB HEAT SINKER BOARD
019 TO-126 INSULATION SHEET 068 DM-2GM-O SHORT SOCKET 069 C-3417A FUSE CLIP
X-1283 PCB ASSEMBLY
C001 044 DE1307E472M SPARK KILLER S901 061 C-4176A08 POWER SWITCH
HEAT SINKER ASSEMBLY
Q617,618 032 D1953 TRANSISTOR Q623,624 033 C4381-OY DRIVER TRANSISTOR
Q607-612 033 TA1016-FG TRANSISTOR Q613,614 033 A1209-ST TRANSISTOR Q615,616 033 C2911-ST TRANSISTOR Q619,620 033 TC3478A-LKU TRANSISTOR Q621,622 033 TA1376A-LKU TRANSISTOR
Q801-803 032 TC2362-FG TRANSISTOR R601,602 054 EE10-102 R,META L1K R603,604 054 EE10-333 R,METAL 33K R605,606 054 EE10-471 R,METAL 470R R607-610 054 TMFR401K5 R,METAL 1% 1.5K
R611,612 054 TMFR4220R R,METAL 1%220R R613,614 054 TMF1/4-5600F R,MRS25 560R R615-618 054 TMFR401K5 R,METAL 1% 1.5K R619,620 054 TMFR4220R R,METAL 1% 220R R621,622 054 TMFR4047K R,METAL 1% 47K
R623,624 054 TMFR4100R R,METAL 1% 100R R625,626 054 TMF1/4-6801F R,MRS25 6.8K R627,628 054 TMF1/4-3901F R,MRS25 3.9K R629,630 054 TMFR4100R R,METAL 1% 100R R631,632 054 TMFR4001K R,METAL 1% 1K
R633,634 054 TMFR4047R R,METAL 1% 47R R635-646 054 NIR2-0.22JF R,METAL 2W 0.22R R647,648 054 2WS10JF R,METAL 2W 10R R651,652 054 TMFR4018K R,METAL 1% 18K R653,654 054 TMF3300 R,METAL 330R
Q625,626 033 A1667-OY DRIVER TRANSISTOR Q627-632 033 C3856-OPY POWER TRANSISTOR Q633-638 033 A1492-OPY POWER TRANSISTOR
017 RM4-08B00 HEAT SINKER BOARD 019 TO-126 INSULATION SHEET(S) 019 TO-3P INSULATION SHEET(L)
OTHERS
011 FP-509 FRONT PANEL ASSY 011 SN4-04A00 HEAT SINKER PANEL 012 RV4-09A00 PUSH KNOB
014 RM4-07B00 BOTTOM BOARD 014 SN3-12A00 UPPER COVER 015 RP-373 PRINTED REAR CHASSIS 019 4TR-2823#2 PLASTIC FOOT 24F 019 4TSH-19#2 PLASTIC FOOT 50F
022 T-1052W04 POWER TRANSFORMER 034 SEL1124R LED 069 C-4629A01 AC INLET 072 C-4621A01 AC CORD SET forS TD 072 C-4622A01 AC CORD SET for AUSTRALIA
072 C-4623A01 AC CORD SET for UK 072 C-4624A01 AC CORD SET for CEE 081 SN4-24A00 INSIDE CARTON 081 Z-202 STYROL MOULDING
R655-658 054 TMFR4220R R,METAL 1% 220R R661 054 TMFR4018K R,MERAL 1% 18K R801 054 1WS4.7KJF R,METAL 1W 4.7K R803 053 CR14-104J-A R,CARBON 100K R804 053 CR14-154J-A R,CARBON 150K
2
Page 3
2SA1016K 2SC2362K 2SA1209 2SC2911 2SA1376A 2SC3478A
PCB AssemblyCase Outline
2SD1953
2SA1667 2SC4381
2SA1492 2SC3856
Adjustment
Instruments : DC milli–voltmeter Notes : Prior to Bias Adjustment, run about 5minutes with rated output(8ohms) and warm up
Power Transistor and Heat Sink. Set input off.
3 4
Step
1
2
Coupling Location Adjust forAdjust
TP1
TP2
X-1240 PCB VR601
VR602X-1240 PCB
DC milli–voltmeter reads 4mV
Page 4
Schematic Diagram
5 6
Page 5
RB-1070-V01 RMB-1095-V01
Schematic Diagram
2
NORMAL
TJ101
TRIG IN
3
R
D103
1N4148
104
1W 1K
1N4148
D106
TJ102
2
1
TRIG OUT
3
2
1
NOTE ON SAFETY
IC101 PC817B
1
23
D105
RD12JS
4
R
105 D104
220
TRIG ON
1N4148
:  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), MANY INCREASE RISK
OF FIRE OR ELECTRICAL SHOCK HAZARD.
PCB Assembly
TRIG SW
S101
016X-1291A02
K103
POWER IND
1
2
3
D001
RY101
OZ-SH-112LM1
D102
1N4148
022T-1075N01
OM1-SS-212LM
T101
K101
2
3
103 R
1.5K
1
2
K102
C101
102
R
33K
25V470
R
1w 120
D101 W02M
101
Q101
2SC3708
61
5
230V
115V
4
123
C102
DE1307E472M
F101
016X-1291A01
1
AC4
AC3
AC2
AC1
250VT500MA
Y-327A-V1-00121M/S-S
Page 6
Parts List
SYMBOL PARTS NO. DESCRIPTION SYMBOL PARTS NO. DESCRIPTION
C101 C102 D101 D102 F101
X-1291-01 PCB ASSEMBLY
041 UTES1E471
044 DE1307E472M ※ 034 W02M ※
034 T1N4148-86
036 5ST500 ※
CAPACITOR ELEC.25V470UF SPARK KILLER BRIDGED DIODE DIODE MINI FUSE 250VT500MA
D103.104 D105 D106 IC101 K103
X-1291-02 PCB ASSEMBLY
034 T1N4148-86 034 TRD12ST1 034 T1N4148-86 031 PC817B 068 C-4588A09
DIODE ZENER DIODE DIODE PHOTO COUPLER CONNECTOR WITH WIRE
Q101 R101 R102 R103 RY101
RY101 T101
NOTE ON SAFTY : Symbol ※ Fire or electrical shock hazard. Only original parts should be used to replaced any part marked with symbol ※ .
032 TC3708-ST 054 1WS120JF 053 CR14-333J-A 053 CR14-152J-A
063 OZ-SH-112LM1 ※
063 OMI-SS-212LM ※ 022 T-1075N01 ※
069 C-3417A
Any other component substitution (other than original type), may increase risk of fire or electrical shock hazard.
TRANSISTOR RESISTOR METAL 1W 120R RESISTOR CARBON 33K RESISTOR CARBON 1.5K RELAY(POWER) for RB-1070-V01
RELAY(POWER) for RMB-1095-V01 SUB TRANSFORMER FUSE CLIP
R104 S101 TJ101.102
054 1WS1KJF 064 C-4613A01 065 YKB21-5103A
RESISTOR METAL 1W 1K TOGGLE SWITCH MINI JACK
Case Outlines
2SC3708 PC817B
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 re­route 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.
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