Rotel RA 611 Service Manual
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Extracted text from Rotel RA 611 Service Manual (Ocr-read)
Page 1
RDTEURW
technical manual
TABLE OF CONTENTS
CHASSIS LAYOUT .
PRECAUTIONS
BIAS (IDLING CURRENT) ADJUSTMENT
TROUBLE SHOOTING
GAIN DIAGRAM
MAIN AMP 81 POWER SUPPLY CIRCUIT BOARD
DIAGRAM
Abacus)
TONE CONTROL CIRCUIT BOARD DIAGRAM
EOUALIZER AMPLIFIER CIRCUIT BOARD DIAGRAM .
SCHEMATIC DIAGRAM .
PARTS LIST
W\l-70101
Page 2
32.
33.
35.
37.
39
41.
42.
43.
45.
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VR202, Volume Control
88, Muting Switch
$7, Loudness Switch
36, Mode Switch
SS, Tone Defeat Switch
VR205, Treble Control IRchJ
VR203, Treble Control (L-ch.)
VR206, Bass Control (Rcht)
VR204, Bass Control IL~chJ
S3, Hi-Fil. Switch
S1, Power Switch
82, Low Fil. Switch
C002, Ripple Filter Capacitor
C001, Ripple Filter Capacitor
Main Amp. 8: Power Supply pcb
0701, Stabilizer Transistor
T001, Power Transformer
JOOZ, 003, 004, AC Outlet
Line Voltage Selector
0307, Power Amp. Transistor (LchJ
D701, Rectilier
D702. Rectifier
0306, Power Amp. Transistor lL-ch.)
Tape Monitor Jacks
0314, Power Amp. Transistor IRchJ
VR301, Idling Current Adj, (L-ch.I
Input Jacks
0313, Power Amp. Transistor (Fl-ch.)
VR302, Idling Current Adj. IR»ch.I
Equalizer Amp, Circuit Board
Tone Control Amp. Circuit Board
S4, Speakers Switch
89, Monitor Switch
510, Selector Switch
VR201, Balance Control
GND. Terminal
PRE/MAIN Jack's (R-ch.)
PRE/MAIN Jacks (L-ch.)
Speakers-1 Terminals lR-chJ
Speakers-l Terminals (L-cht)
Speakers? Terminals (Fl-ch.)
Speakers-2 Terminals (LchJ
F003, Speaker Fuse (Fl-ch.)
F002, Speaker Fuse (LthJ
F001, AC Fuse
CHASSIS LAYOUT
Page 11
Schmtic auntie
Location Put Na. M9130" Lou-11'0" Pm No. Dmripflon
CAPACITORS 0303, 310 301201137 25C983. Pndriver
C301, 303, 0304, 311 301201143 25C1095, Drivar
C308, 310 402220509 Electrolytic, 220mfd, 6.3V 0305' 312 301001128 257. Driver
0302, 305' 0301. 302 300212007 KB-365. Varistev
0309, 321 1 402470649 Electrolytic, 47mfd, 50V D701 300919010 ESACOZN, Rectifier
c304, 311 440151183 Ceramic, 150pF 210%, 250v D702 300919009 55ch mm"
C306, 313 440151283 Ceramic. 15pF 310%, 250V 703' 7" 300919003 SM'WZ Rxfl'i"
C307. 314 450200833 Mylar Film, 0.2m! 210%, 50V L301, 302 220401120 Coil, Anti-parasitic
C701. 702 402100439 Electrolytic, 1000mm, 35V 127012128 Heat Sink for P's-driver
C703 402470539 Electrolytic, 470mld, 35V 770101224 Pin, Terminal
140600661 Printed Circuit Board "H-AF-3"
TRANSISTORS AND DIODES 141610246 Main Amp. 81 Power Supply Circuit
0301. 302.
0308. 309 } 301001115 25A564, Differential Amp.
Assembly
fin-