Onkyo HTP-420 Service Manual
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Onkyo HTP-420 Service Manual

Onkyo HTP-420 Service Manual

5.1-ch package
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5.1-CH HOME THEATER SPEAKER PACKAGE
MODEL
Front Speakers (L / R)
"SKF-420F"
BMDD
120V AC, 60Hz
BMDC
120V AC, 60Hz
---
---
BMPA
230-240V AC, 50Hz
---
---
---
---
SAFETY-RELATED COMPONENT
WARNING!!
COMPONENTS IDENTIFIED BY MARK
Schematic Diagram AND IN THE PARTS LIST ARE
CRITICAL FOR RISK OF FIRE AND ELECTRIC SHOCK.
REPLACE THESE COMPONENTS WITH ONKYO
PARTS WHOSE PART NUMBERS APPEAR AS SHOWN
IN THIS MANUAL.
MAKE LEAKAGE-CURRENT OR RESISTANCE
MEASUREMENTS TO DETERMINE THAT EXPOSED
PARTS ARE ACCEPTABLY INSULATED FROM THE
SUPPLY CIRCUIT BEFORE RETURNING THE
APPLIANCE TO THE CUSTOMER.
SERVICE MANUAL
SERVICE MANUAL
HTP-420(B)/(S)
Center Speaker
Surround Speakers (L / R)
"SKC-420C"

Black and Silver models

SMDD
SMDC
SMDT
SMPA
SMGT
SMPT
"SKW-420"
"SKM-420S"
120V AC, 60Hz
120V AC, 60Hz
120V AC, 60Hz
230-240V AC, 50Hz
220-230V AC, 50/60Hz
230-240V AC, 50Hz
ON THE
HTP-420
Ref. No. 3808
042004

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  • Page 1 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 NUMBERS APPEAR AS SHOWN IN THIS MANUAL. MAKE LEAKAGE-CURRENT OR RESISTANCE...
  • Page 2 HTP-420 SPECIFICATIONS Powered Subwoofer (SKW-420) Center Speaker (SKC-420C) Bass-reflex with built-in 2 Way Bass-reflex Type : Type : power amplifier Impedance : 8 ohm Input sensitivity/impedance : 220 mV / 15 k ohm Maximum input power : 100 W Maximum output power :...
  • Page 3 HTP-420 EXPLODED VIEWS-1 SKW-420 : POWERED SUBWOOFER <Notes> SP06 A06 (POWER SWITCH) : x 10 pcs. MDD type --- No MDC type --- No MDT type --- No MDD type MPA type --- Yes MDC type --- Yes MGT type...
  • Page 4 HTP-420 EXPLODED VIEWS-2 SKW-420 : POWERED SUBWOOFER SP01 SP02 x 4 pcs. SP04 SP03 SP08 SP06 x 8 pcs. SP05 x 8 pcs.
  • Page 5 HTP-420 EXPLODED VIEWS-3 SKF-420F / SKC-420C / SKM-420S SP10 SP12 SP14 SP15 SP11 SP13 I N A l a c G r e I N A I N A l a c l a c i t e R e d "SKC-420C"...
  • Page 6 HTP-420 BLOCK DIAGRAM SKW-420 : POWERED SUBWOOFER...
  • Page 7 HTP-420 SCHEMATIC DIAGRAM SKW-420 : POWERED SUBWOOFER LINE INPUT OUTPUT LEVEL RED : STANDBY GREEN : ON INPUT PC BOARD VR / LED PC BOARD AC 120V / 60Hz <Note> <Note> AC 220-230V / 50Hz POWER SWITCH* / C1** C913*** / C914***...
  • Page 8 HTP-420 SPEAKER MAIN PC BOARD...
  • Page 9 HTP-420 SCHEMATIC DIAGRAM SKW-420 : POWERED SUBWOOFER SPEAKER LINE INPUT OUTPUT LEVEL RED : STANDBY GREEN : ON INPUT PC BOARD VR / LED PC BOARD MAIN PC BOARD AC 120V / 60Hz <Note> <Note> AC 220-230V / 50Hz POWER SWITCH* / C1**...
  • Page 10 HTP-420 PC BOARD CONNECTION DIAGRAM SKW-420 : POWERED SUBWOOFER INPUT PC BOARD MAIN PC BOARD VR / LED PC BOARD <Notes> POWER SWITCH : MDD type --- No MDC type --- No MDT type --- No MPA type --- Yes...
  • Page 11 HTP-420 PRINTED CIRCUIT BOARD VIEW SKW-420 : POWERED SUBWOOFER MAIN PC BOARD INPUT PC BOARD VR / LED PC BOARD No PC board view Look over the actual PC board on hand...
  • Page 12 TDA7293 ® 120V - 100W DMOS AUDIO AMPLIFIER WITH MUTE/ST-BY VERY HIGH OPERATING VOLTAGE RANGE MULTIPOWER BCD TECHNOLOGY (±50V) DMOS POWER STAGE HIGH OUTPUT POWER (100W @ THD = = ±40V) 10%, R = 8Ω, V MUTING/STAND-BY FUNCTIONS NO SWITCH ON/OFF NOISE VERY LOW DISTORTION Multiwatt15V Multiwatt15H...
  • Page 13 TDA7293 PIN CONNECTION (Top view) (POWER) (POWER) BOOTSTRAP LOADER BUFFER DRIVER MUTE STAND-BY (SIGNAL) (SIGNAL) BOOTSTRAP CLIP AND SHORT CIRCUIT DETECTOR SIGNAL GROUND NON INVERTING INPUT INVERTING INPUT STAND-BY GND TAB CONNECTED TO PIN 8 D97AU806 ABSOLUTE MAXIMUM RATINGS Symbol Parameter Value Unit...
  • Page 14 TDA7293 = ±40V, R = 50 Ω; ELECTRICAL CHARACTERISTICS (Refer to the Test Circuit V = 8Ω, R = 25°C, f = 1 kHz; unless otherwise specified). Symbol Parameter Test Condition Min. Typ. Max. Unit ±12 ±50 Supply Range Quiescent Current µA Input Bias Current Input Offset Voltage...
  • Page 15 TDA7293 Figure 2: Typical Application P.C. Board and Component Layout (scale 1:1) 4/15...
  • Page 16 TDA7293 APPLICATION SUGGESTIONS (see Test and Application Circuits of the Fig. 1) The recommended values of the external components are those shown on the application circuit of Fig- ure 1. Different values can be used; the following table can help the designer. LARGER THAN SMALLER THAN COMPONENTS...
  • Page 17 TDA7293 frequency response; moreover, an accurate con- INTRODUCTION trol of quiescent current is required. In consumer electronics, an increasing demand A local linearizing feedback, provided by differen- has arisen for very high power monolithic audio tial amplifier A, is used to fullfil the above require- amplifiers able to match, with a low cost, the per- ments, allowing a simple and effective quiescent formance obtained from the best discrete de-...
  • Page 18 TDA7293 Figure 4: Turn ON/OFF Suggested Sequence V IN (mV) V ST-BY PIN #9 V MUTE PIN #10 (mA) V OUT ST-BY PLAY ST-BY MUTE MUTE D98AU817 mute functions, independently driven by two In addition to the overload protection described CMOS logic compatible input pins.
  • Page 19 TDA7293 The TDA7293 is a monolithic MOS power ampli- The main advantages offered by this solution are: fier which can be operated at 100V supply voltage - High power performances with limited supply (120V with no signal applied) while delivering out- voltage level.
  • Page 20 TDA7293 Figure 6: High Efficiency Application Circuit +50V BC394 1N4001 BDX53A D1 BYW98100 +25V BC393 BC393 R17 270 L1 1µH D3 1N4148 C12 330nF Z1 3.9V C11 22µF R3 680 1000µF 100nF 1000µF 100nF 330nF 3.3K 1.8nF L3 5µH TDA7293 PLAY C13 10µF R18 270...
  • Page 21 TDA7293 Figure 6b: PCB - Solder Side of the fig. 6. Figure 7: Modular Application Circuit C7 100nF C6 1000µF R3 22K MASTER BUFFER +PWVs DRIVER 22µF 680Ω C1 470nF 100nF BOOT R1 22K LOADER 2Ω SGND 47µF VMUTE R5 10K MUTE BOOTSTRAP MUTE...
  • Page 22 TDA7293 Figure 8a: Modular Application P.C. Board and Component Layout (scale 1:1) (Component SIDE) Figure 8b: Modular Application P.C. Board and Component Layout (scale 1:1) (Solder SIDE) 11/15...
  • Page 23 TDA7293 Figure 12: Modular Application Derating Rload Figure 9: Distortion vs Output Power vs Vsupply (ref. fig. 7) T.H.D (%) Vs = +/-29V f = 20 KHz Rl = 4 Ohm 0.05 0.02 Forbidden Area f = 1KHz 0.01 Pd > 50W at T =70°C 0.005 case...
  • Page 24 TDA7293 13/15...
  • Page 25 TDA7293 inch DIM. OUTLINE AND MIN. TYP. MAX. MIN. TYP. MAX. MECHANICAL DATA 0.197 2.65 0.104 0.063 0.49 0.55 0.019 0.022 0.66 0.75 0.026 0.030 1.14 1.27 0.045 0.050 0.055 17.57 17.78 17.91 0.692 0.700 0.705 19.6 0.772 20.2 0.795 20.57 0.810 18.03...
  • Page 26 TDA7293 Information furnished is believed to be accurate and reliable. However, STMicroelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of STMicroelectronics.
  • Page 27 August 2000 LM124/LM224/LM324/LM2902 Low Power Quad Operational Amplifiers General Description Advantages n Eliminates need for dual supplies The LM124 series consists of four independent, high gain, internally frequency compensated operational amplifiers n Four internally compensated op amps in a single which were designed specifically to operate from a single package power supply over a wide range of voltages.
  • Page 28 Connection Diagram (Continued) Note 3: See STD Mil DWG 5962R99504 for Radiation Tolerant Device DS009299-33 Order Number LM124AW/883, LM124AWG/883, LM124W/883 or LM124WG/883 LM124AWRQML and LM124AWRQMLV(Note 3) See NS Package Number W14B LM124AWGRQML and LM124AWGRQMLV(Note 3) See NS Package Number WG14A Schematic Diagram (Each Amplifier) DS009299-2...
  • Page 29 Absolute Maximum Ratings (Note 12) If Military/Aerospace specified devices are required, please contact the National Semiconductor Sales Office/ Distributors for availability and specifications. LM124/LM224/LM324 LM2902 LM124A/LM224A/LM324A Supply Voltage, V Differential Input Voltage Input Voltage −0.3V to +32V −0.3V to +26V Input Current <...
  • Page 30 Electrical Characteristics (Continued) = +5.0V, (Note 7), unless otherwise stated LM124A LM224A LM324A Parameter Conditions Units Power Supply = 5V to 30V Rejection Ratio (LM2902, V = 5V to 26V), = 25˚C Amplifier-to-Amplifier f = 1 kHz to 20 kHz, T = 25˚C −120 −120...
  • Page 31 Electrical Characteristics (Continued) = +5.0V, (Note 7), unless otherwise stated LM124/LM224 LM324 LM2902 Parameter Conditions Units = 25˚C Amplifier-to-Amplifier f = 1 kHz to 20 kHz, T = 25˚C −120 −120 −120 Coupling (Note 11) (Input Referred) − Output Current Source = 1V, V = 0V,...
  • Page 32 Typical Performance Characteristics Input Voltage Range Input Current DS009299-34 DS009299-35 Supply Current Voltage Gain DS009299-36 DS009299-37 Open Loop Frequency Common Mode Rejection Response Ratio DS009299-38 DS009299-39 www.national.com...
  • Page 33 Typical Performance Characteristics (Continued) Voltage Follower Pulse Voltage Follower Pulse Response Response (Small Signal) DS009299-40 DS009299-41 Large Signal Frequency Output Characteristics Response Current Sourcing DS009299-42 DS009299-43 Output Characteristics Current Limiting Current Sinking DS009299-45 DS009299-44 www.national.com...
  • Page 34 Typical Performance Characteristics (Continued) Input Current (LM2902 only) Voltage Gain (LM2902 only) DS009299-46 DS009299-47 Application Hints The LM124 series are op amps which operate with only a Where the load is directly coupled, as in dc applications, single power supply voltage, have true-differential inputs, there is no crossover distortion.
  • Page 35 Typical Single-Supply Applications = 5.0 V Non-Inverting DC Gain (0V Input = 0V Output) DS009299-5 R not needed due to temperature independent I DC Summing Amplifier Power Amplifier ≥ 0 V ≥ V and V IN’S DS009299-7 = 0 V for V = 0 V DS009299-6...
  • Page 36 Typical Single-Supply Applications = 5.0 V ) (Continued) LED Driver “BI-QUAD” RC Active Bandpass Filter DS009299-8 DS009299-9 = 1 kHz Q = 50 = 100 (40 dB) Fixed Current Sources Lamp Driver DS009299-11 DS009299-10 www.national.com...
  • Page 37 Typical Single-Supply Applications = 5.0 V ) (Continued) Current Monitor Driving TTL DS009299-13 DS009299-12 (Increase R1 for I small) Voltage Follower Pulse Generator DS009299-14 DS009299-15 www.national.com...
  • Page 38 Typical Single-Supply Applications = 5.0 V ) (Continued) Squarewave Oscillator Pulse Generator DS009299-16 DS009299-17 High Compliance Current Sink DS009299-18 = 1 amp/volt V (Increase R for I small) www.national.com...
  • Page 39 Typical Single-Supply Applications = 5.0 V ) (Continued) Low Drift Peak Detector DS009299-19 Comparator with Hysteresis Ground Referencing a Differential Input Signal DS009299-20 DS009299-21 www.national.com...
  • Page 40 Typical Single-Supply Applications = 5.0 V ) (Continued) Voltage Controlled Oscillator Circuit DS009299-22 ≤ V ≤ 2 (V Wide control voltage range: 0 V −1.5 V Photo Voltaic-Cell Amplifier DS009299-23 AC Coupled Inverting Amplifier DS009299-24 www.national.com...
  • Page 41 Typical Single-Supply Applications = 5.0 V ) (Continued) AC Coupled Non-Inverting Amplifier DS009299-25 DC Coupled Low-Pass RC Active Filter DS009299-26 = 1 kHz Q = 1 www.national.com...
  • Page 42 Typical Single-Supply Applications = 5.0 V ) (Continued) High Input Z, DC Differential Amplifier DS009299-27 High Input Z Adjustable-Gain DC Instrumentation Amplifier DS009299-28 www.national.com...
  • Page 43 Typical Single-Supply Applications = 5.0 V ) (Continued) Using Symmetrical Amplifiers to Bridge Current Amplifier Reduce Input Current (General Concept) DS009299-30 DS009299-29 Bandpass Active Filter DS009299-31 = 1 kHz Q = 25 www.national.com...
  • Page 44 Physical Dimensions inches (millimeters) unless otherwise noted Ceramic Dual-In-Line Package (J) Order Number JL124ABCA, JL124BCA, JL124ASCA, JL124SCA, LM124J, LM124AJ, LM124AJ/883, LM124J/883, LM224J, LM224AJ or LM324J NS Package Number J14A MX S.O. Package (M) Order Number LM324M, LM324MX, LM324AM, LM324AMX, LM2902M or LM2902MX NS Package Number M14A www.national.com...
  • Page 45 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) Molded Dual-In-Line Package (N) Order Number LM324N, LM324AN or LM2902N NS Package Number N14A Ceramic Flatpak Package Order Number JL124ABDA, JL124ABZA, JL124ASDA, JL124BDA, JL124BZA, JL124SDA, LM124AW/883, LM124AWG/883, LM124W/883 or LM124WG/883 NS Package Number W14B www.national.com...
  • Page 46 Physical Dimensions inches (millimeters) unless otherwise noted (Continued) 14-Pin TSSOP Order NumberLM324MT or LM324MTX NS Package Number MTC14 LIFE SUPPORT POLICY NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION.
  • Page 47 BOTTOM BOARD F2905-GW ANF860002BM10 EXPLODED SP03 BOTTOM BOARD F2905-GW ANF860003BM10 EXPLODED SP04 FRONT PLATE SKW-420 / ONKYO NAME PLATE BPL8001470001 EXPLODED SP05 WOOD SCREW 8 x 4 x L75 (FOR FOOT) NST8550514750 EXPLODED SP06 WOOD SCREW 4STT+20A (FOR AMPLIFIER / SP)
  • Page 48 YLB810004SL10 EXPLODED SP18 COMPLETE UNIT "SKM-420S (S) R" ANU8S670SBM11 EXPLODED SP19 BACK LABEL (R) YLB810004SR10 EXPLODED HTP-420 PRINTED CIRCUIT BOARD PARTS LIST CIRCUIT NO. PART NAME DESCRIPTION Q'TY PART NO. (SN) MARK IC501 POWER IC 15PIN TDA7293 RHI007293-0001 DB901 DIODE...
  • Page 49 Tel: 201-785-2600 Fax: 201-785-2650 http://www.onkyousa.com ONKYO EUROPE ELECTRONICS GmbH Liegnitzerstrasse 6, 82194 Groebenzell, GERMANY Tel: +49-8142-4401-0 Fax: +49-8142-4401-555 http://www.onkyo.net ONKYO CHINA LIMITED Units 2102-2107, Metroplaza Tower I, 223 Hing Fong Road, Kwai Chung, N.T., HONG KONG Tel: 852-2429-3118 Fax: 852-2428-9039 HOMEPAGE http://www.onkyo.com/...

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Htp-420bHtp-420s

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