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RDA-7

1

SERVICE MANUAL

Seven Channel Amplifier

RDA-7

Ref NO. 3651

TABLE OF CONTENTS

Cover page

Specifications, Supplied accesories

Unpacking abd storing the packing materials

Front panel

Rear panel

Chassis-exploded view

Parts list

16 

Screws

18 

Adjustment procedures

19 

Pcboard

20 

Primary connections

22 

Circuit diagrams

SAFETY-RELATED COMPONENT 
WARNING!!

COMPONENTS IDENTIFIED BY MARK 

 ON THE 

SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE 
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK. 
REPLACE THESE COMPONENTS WITH ONKYO PARTS 
WHOSE PART NUMBER APPEAR AS SHOWN IN THIS 
MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE MEA-
SUREMENTS TO DETERMINE THAT EXPOSED PARTS 
ARE ACCEPTABLY INSULATED FROM THE SUPPLY 
CIRCUIT BEFORE RETURNING THE APPLIANCE TO 

Silver model
UPP      230 V AC
UDT      120 V AC
UPT      230 V AC

May 2000

Summary of Contents for RDA-7

Page 1: ...nections 22 Circuit diagrams SAFETY RELATED COMPONENT WARNING COMPONENTS IDENTIFIED BY MARK ON THE SCHEMATIC DIAGRAM AND IN THE PARTS LIST ARE CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK REPLACE THES...

Page 2: ...re than 0 1 total harmonic distortion Frequency response 3 dB 3 5 Hz 250 kHz Input Impedance 47 kohm each phase Input signal for max output power 1 2 V Input Sensitivity Unbalanced 100 mVrms Input Sen...

Page 3: ...Onkyo service station or representative immediately Also take down the name of the carrier in case it is necessary to obtain compensation from the carrier service Storing the packing materials After u...

Page 4: ...f both indicators are off then the main Power switch on the front panel is turned off If the Power switch is turned on then one of these indicators will be lit On Lights blue when Power is supplied fr...

Page 5: ...compatible with the pin assignments for this terminal If it does not wire it so that the output pins connect with the proper input pins Connector ground terminal Chassis grounded 2 Disconnecting the...

Page 6: ...connected equipment with a lead wire 5 12 volts positive tip polarity 1 3 4 5 2 15 mm 5 8 inch Warning Before replacing the fuse or making any electrical connections always turn off the Power and disc...

Page 7: ...RDA 7 7 CHASSIS EXPLODED VIEW Top Cover Amp Module Front Panel Assembly Chassis...

Page 8: ...ce to VR8 R3 R17 R49 2 00K R4 110K R5 R81 R83 10 0K R67 R75 R76 R78 R80 R82 R6 100K R7 R8 13 0K R9 R10 6 49k R11 R12 16k 2W R13 R15 47k R14 R16 R41 R42 R26 R27 R47 100 Ohm R18 R31 R38 R64 5 62k R19 R2...

Page 9: ...uF 100V EF1106 ND Polyester C18 C19 1000pF 50V P3102 ND or Equiv Film C21 3 3uF 100V EF1335 ND 15 0034 Polyester C22 C23 6 8pF 50V Axial Cer C24 C25 22p 100V Axial Cer C26 0 1uF 50V P4593 ND Film C27...

Page 10: ...Bush Q2 Sheet Q2 Q3 2N5401 Q4 2N5551 Q5 IRF5210 or IRF9540N 13 5 40x3 8 Q5 Socket Hd Cap Blk 25 0033 Screw TRS 13 2 87643008 W3x8F BC Washer Q5 13 3 871130 SW 3 Spring Washer Q5 13 4 28170075 TOSHIBA...

Page 11: ...5 0048 Sheet Q17 Q19 Q21 Q23 Q24 MPS2222A PN2222A U1 Voltage Regulator LP2951CN U2 U3 Voltage Regulator LM317L TO 92 U4 Voltage Reference LM385Z U5 U10 Optocoupler Single PS2502 1 U6 Dual Comparator T...

Page 12: ...3 1N4150 Diode Switching or 1N4148 CR4 LED T 1 3 4 Blue Tube CR5 LED T 1 3 4 Red Tube Q1 Q2 MPS2222A U1 TLC555 8pin DIP Fuses F2 Littelfuse Pico II R251 001 F826 ND Transformer T1 Microtran MT3101 Rel...

Page 13: ...r Description L Bracket 9 M4x0 7 8mm Flat Hd Blk Screw COV 12V trigger Assembly Ref No Parts Number Description Connector to AC 4 pin AMP103958 3 Molex 50 57 9404 21 0049 Wire BLK Wire WHT Wire RED Wi...

Page 14: ...ew GROU Front Panel Module REF NO PART NO DESCRIPTION 27212183 Front Panel Assembly Front Bracket with pemnut 3 10 32x1 4 Button Hd Cap Blk Screw FBRA Switch plate Power Switch TV 5 UL marking VDE SEM...

Page 15: ...14 015 15A 250V UL CSA UDD UDT UJJ Fuse 43 0004 230 LF314 010 10A250V UL CSA UPP UPT UGT 29342947 Instruction Manual E UDD UDT UPP UPT UGT 29342949 Instruction Manual T UDT UPT UGT 29342948 Instructio...

Page 16: ...RDA 7 16 SCREWS 14 GROU 14 1...

Page 17: ...RDA 7 17 11 11 1 13 13 13 12 13 1 13 4 13 2 13 2 13 2 12 1 13 3 13 3 13 3 6 6 1...

Page 18: ...t 1 Assemble the chassis power supply and configure it for right line voltage 2 Plug it into the power line 3 Turn the unit ON The blue ON LED should come ON 4 Red Fault Standby LED should be flashing...

Page 19: ...RDA 7 19 Pcboard Component side view from circuit side Circuit side view from component side...

Page 20: ...V K1 3 to BL1 4 P7 to BL1 3 P2 to BL1 2 K2 3 to BL1 12 P8 to BL1 11 P3 to BL1 10 110V K1 3 to BL1 6 P7 to BL1 5 P2 to BL1 2 K2 3 to BL1 14 P8 to BL1 13 P3 to BL1 10 120V K1 3 to BL1 8 P7 to BL1 7 P2 t...

Page 21: ...RDA 7 21 Inrush Current Limiter Board RDA 7 030 AC PCB Module RDA 7 020 P2 BL1 P3 P7 P4 P9 P1 P10 P8 K1 3 K2 3 K2 4 K1 4 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 Low L L H High Jumpers...

Page 22: ...RDA 7 22 POWER SUPPLY SCHEMATIC DIAGRAMS...

Page 23: ...RDA 7 23 DRIVER CIRCUIT...

Page 24: ...RDA 7 24 OUTPUT STAGE AND PROTECTION...

Page 25: ...RDA 7 25 PROTECTION...

Page 26: ...RDA 7 26 AC BOARD...

Page 27: ...RDA 7 27 PROTECTION WIRING...

Page 28: ...egra Research Division of ONKYO U S A CORPORATION 18 Park Way Upper Saddle River NJ 07458 U S A Tel 201 785 2600 Fax 201 785 2650 E mail research onkyousa com ONKYO EUROPE ELECTRONICS GmbH Industriest...

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