Rotel RB-1080 User manual

Technical
Manual
STEREO POWER AMPLIFIER
RB-1080
Table of Contents
Specification
Specification..................................... 1
Parts List .......................................... 2,3
Adjustment....................................... 3
Case Outlines................................... 3
Note On Safety................................. 4
PCB Assembly ................................. 4,6
Schematic Diagram.......................... 7,8
Continuous Power Output (20-20 kHz, ≤0.03%, 8 ohms) 200 watts/ch.
(20-20 kHz, ≤0.05%, 4 ohms) 300 watts/ch.
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 4-16 ohms
Signal to Noise Ratio (IHF A network) 120 dB
Input Impedance/Sensitivity (RCA Inputs) 33 k Ohms/1.0 volt
(XLR Inputs) 33k Ohms/1.0 volt
Power Requirements 115 Volts, 60 Hz or
230 Volts, 50 Hz
Power Consumption 550 Watts
Dimensions (W, H, D) 440 x 127 x 385 mm
17.38 x 4.76 x 15.16” inches
Weight (net) 16.7 kg., 36.74 lb.
SHINSEN-BLD. 4F 10-10 SHINSEN-CHO, SHIBUYA-KU,
TOKYO 150-0045, JAPAN
Serial. NO.
Begining
®
Quality Uncompromised
Y-337A-00125M/S-S

2
Parts List-1
C601.602
C603.604
C607.608
C609.610
C611.612
C613-616
C623-626
C627.628
D601-608
D609-612
FU601-604
Q601-606
Q607-612
Q613.614
Q615.616
Q619.620
Q621.622
R601.602
R603.604
R605.606
R607-610
R611.612
R613.614
R615-618
R619.620
R621.622
R623.624
R625.626
R627.628
R629.630
R631.632
R633.634
R635-654
R657.658
R659-662
R663.664
R665.666
R667-670
TH601.602
VR601.602
C801
C802
C803
X-1177-01,02 PCB ASSY
041 50BGF4R7M
044 TFKP2-2A681H
041 25BGF100M
044 FSC160V331H
054 TMF1/4-3302F
041 50BGF10M
044 FSC160V561H
041 VX2A102S ※
044 FSC160V471H
034 T1N4148-86
034 T1N4003-TB
036 5ST6.3 ※
033 TC2362-FG
033 TA1016-FG
033 A1209-ST
033 C2911-ST
033 TC2910-RST
033 TA1208-RST
054 EE10-102
054 EE10-333
054 EE10-471
054 TMFR401K5
054 TMFR4220R
054 TMF1/4-5600F
054 TMFR401K5
054 TMFR4220R
054 TMFR4047K
054 TMFR4100R
054 TMF1/4-6801F
054 TMF1/4-3901F
054 TMFR4100R
054 TMFR4001K
054 TMFR4047R
054 MPC78-0.22F
054 TMFR415K4
054 2WS6.8KJF
054 TMFR4010R
054 TMF3300
054 TMFR4220R
034 TTC-503
051 SFR001-222
017 C-4378A01
019 TO-126
066 4TR-2487#7
066 4TR-2487#8
068 C-4349A04
069 C-3417A
069 C-4446A00
X-1237-02 PCB ASSEMBLY
069 C-4370A00
X-1237-03 PCB ASSEMBLY
041 UTES2A220-FB
041 UTES1E101-FB
041 UTES2A221 ※
CAPACITOR ELEC.50V4.7UF
CAPACITOR FILM 100V680PF
CAPACITOR ELEC.25V100UF
CAPACITOR STYROL 160V330PF
RESISTOR MRS25 33K
CAPACITOR ELEC.50V10UF
CAPACITOR STYROL 160V560PF
CAPACITOR ELEC.100V1000UF
CAPACITOR STYROL 160V470PF
DIODE
DIODE
MINI FUSE 250VT6.3A
TRANSISTOR(2SC2362K-FG)
TRANSISTOR(2SA1016K-FG)
TRANSISTOR(2SA1209-ST)
TRANSISTOR(2SC2911-ST)
TRANSISTOR(2SC2910-RST)
TRANSISTOR(2SA1208-RST)
RESISTOR METAL 1K
RESISTIR METAL 33K
RESISTOR METAL 470R
RESISTOR METAL 1% 1.5K
RESISTOR METAL 1% 220R
RESISTOR MRS25 560R
RESISTOR METAL 1% 1.5K
RESISTOR METAL 1% 220R
RESISTOR METAL 1% 47K
RESISTOR METAL 1% 100R
RESISTOR MRS25 6.8K
RESISTOR MRS25 3.9K
RESISTOR METAL 1% 100R
RESISTOR METAL 1% 1K
RESISTOR METAL 1% 47R
RESISTOR METAL 2W 0.22R
RESISTOR METAL 1% 15.4K
RESISTOR METAL 2W 6.8K
RESISTOR METAL 1% 10R
RESISTOR METAL 330R
RESISTOR METAL 1% 220R
THERMISTOR
SEMI-FIXED RESISTOR 2.2K
HEAT SINKER
INSULATION SHEET
1P PINJACK (RED)
1P PINJACK (WHT)
3P CONNECTOR WIRE
FUSE CLIP
SCREW TERMINAL
SCREW TERMINAL
CAPACITOR ELEC.100V22UF
CAPACITOR ELEC.25V100UF
CAPACITOR ELEC.100V220UF
C804
D801
D802
D803-806
D807.808
Q801-803
R801
R803
R804
R805
R806
R807
R809
R811.812
R813.814
R815.816
R817.818
C901.902
D901.902
Q901
Q902
R901.902
R903.904
RY901
S901
C501.502
C505-508
IC501.502
R501-504
R505-508
R509.510
C001
S901
C101
C102
D101
D102
F101
Q101
R101
R102
R103
RY101
T101
041 UTES2A220-FB ※
034 T1N4148-86
034 RD10EB
034 T1N4003-TB ※
034 T1N4148-86
032 TC2362-FG
054 1WS6.8KJF
053 CR14-104J-A
053 CR14-224J-A
053 CR14-104J-A
053 CR14-333J-A
053 CR14-104J-A
054 1WS6.8KJF
053 CR14-104J-A
053 CR14-183J-A
053 CR14-332J-A
053 CR14-273J-A
X-1237-04 PCB ASSEMBLY
041 25BGF470M
034 RD16EB
033 D600-EF
033 B631-EF
054 1WS2.2KJF
054 1WS5.6KJF
063 V23106-24
064 4TR-2341
017 C-4401A01
019 TO-126
X-1237-05,06 PCB ASSY
044 S50V100PJ
041 25BGF100M
031 AD711JN
054 TMFR4022K
054 TMFR4010K
054 TMFR4001K
066 C-4575A01
X-1283 PCB ASSEMBLY
044 DE1307E472M ※
061 C-4176A07 ※
X-1291-01 PCB ASSEMBLY
041 UTES1E471
044 DE1307E472M ※
034 W02M ※
034 T1N4148-86
036 5ST500 ※
032 TC3708-ST
054 1WS120JF
053 CR14-333J-A
053 CR14-152J-A
063 OZ-SH-112LM1 ※
022 T-1075N01 ※
069 C-3417A
CAPACITOR ELEC.100V22UF
DIODE
ZENER DIODE
DIODE
DIODE
TRANSISTOR(2SC2362K-FG)
RESISTOR METAL 1W 6.8K
RESISTOR CARBON 100K
RESISTOR CARBON 220K
RESISTOR CARBON 100K
RESISTOR CARBON 33K
RESISTOR CARBON 100K
RESISTOR METAL 1W 6.8K
RESISTOR CARBON 100K
RESISTOR CARBON 18K
RESISTOR CARBON 3.3K
RESISTOR CARBON 27K
CAPACITOR ELEC.25V470UF
ZENER DIODE
TRANSISTOR(2SD600K-EF)
TRANSISTOR(2SB631K-EF)
RESISTOR METAL 1W 2.2K
RESISTOR METAL 1W 5.6K
RELAY (PROTECTION)
SLIDE SWITCH
HEAT SINKER
INSULATION SHEET
CAPACITOR STYROL 50V100PF
CAPACITOR ELEC.25V100UF
IC(OPE AMP)
RESISTOR METAL 1% 22K
RESISTOR METAL 1% 10K
RESISTOR METAL 1% 1K
CANNON CONNECTOR
SPARK KILLER
POWER SWITCH
CAPACITOR ELEC.25V470UF
SPARK KILLER
BRIDGED DIODE
DIODE
MINI FUSE 250VT500MA
TRANSISTOR
RESISTOR METAL 1W 120R
RESISTOR CARBON 33K
RESISTOR CARBON 1.5K
RELAY (POWER)
SUB TRANSFORMER
FUSE CLIP
SYMBOL PARTS NO. DESCRIPTION SYMBOL PARTS NO. DESCRIPTION

3
Parts List-2
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.
Step Coupling
TP 3 - TP 1
TP 4 - TP 2
X-1177-01 PCB
X-1177-02 PCB
VR601
VR602
1
2
Location Adjust Adjust for
DC milli–voltmeter reads 7mV
Adjustment
Case Outline
D103.104
D105
D106
IC101
K103
R104
R105
S101
TJ101.102
Q617.618
Q623-632
Q633.634
Q635.636
Q637-646
X-1291-02 PCB ASSEMBLY
034 T1N4148-86
034 TRD12JST1
034 T1N4148-86
031 PC817B
068 C-4588A09
054 1WS1KJF
053 CR14-221J-A
064 C-4613A01
065 YKB21-5103A
HEAT SINKER ASSEMBLY
032 D1953
033 A1492-OPY
033 B817-DE
033 D1047-DE
033 C3856-OPY
017 PX4-06A00
019 TO-3P
OTHERS
011 FP-530
011 RV4-02A05
012 RV4-09A00
013 RM4-10A00T
014 RV3-07A01
DIODE
ZENER DIODE
DIODE
PHOTO COUPLER
CONNECTOR WITH WIRE
RESISTOR METAL 1W 1K
RESISTOR CARBON 220R
TOGGLE SWITCH (TRIGGER)
MINI JACK
TRANSISTOR(2SD1953)
POWER TRANSISTOR(2SA1492-OPY)
DRIVER TRANSISTOR(2SB817-DE)
DRIVER TRANSISTOR(2SD1047-DE)
POWER TRANSISTOR(2SC3856-OPY)
HEAT SINKER
INSULATION SHEET
SUB PANEL ASSY
H/S PANEL
PUSH KNOB 14F
EARTH PLATE
UPPER COVER
015 RP-381
019 4TSH-19#2
022 T-1037W04 ※
034 BR154 ※
034 SEL1124R
036 3AG125V12A ※
036 5ST6.3 ※
041 ALS30S1077XX ※
044 KT18-2A104K
054 2WS10JF
067 4TR-2744#1
067 4TR-2744#2
069 C-4200A01
069 C-4595A00
069 C-4637A00 ※
072 C-4392A02 ※
072 C-4393A03 ※
072 C-4423A03 ※
072 C-4639A01 ※
081 TK4-01A00
081 Z-200
REAR CHASSIS
PLASTIC FOOT 50F
POWER TRANSFORMER
POWER DIODE
LED 1X5
LONG FUSE 125V12A for STD
MINI FUSE 250VT6.3A for CEE
CAPACITOR ELEC.80V15000UF
CAPACITOR FILM 100V0.1UF
RESISTOR METAL 2W 10R
SPEAKER TERMINAL (RED)
SPEAKER TERMINAL (WHT)
LONG FUSE HOLDER for STD
MINI FUSE HOLDER for CEE
AC INLET
AC CORD SET for STD
AC CORD SET for CEE
AC CORD SET for AUSTRALIA
AC CORD SET for UK
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 increase risk of fire or electrical shock hazard.
2SA1016K
2SA1208
2SC2362K
2SC3708
2SC2910
2SB631K
2SA1209
2SD1953
2SD600K
2SC2911
2SA1492
2SB817
2SC3856
2SD1047
PC817B AD711JN

4
PCB Assembly
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.

PCB Assembly
5 6

7 8
Schematic Diagram