Product Overview
A black Onkyo HTX-22HDX Digital Surround System, featuring a central receiver/amplifier unit with a display showing "HDMI TrueHD", accompanied by two compact satellite speakers and a remote control (RC-720S). The system supports HDMI® V1.4a and RIHD connectivity.
| Model | Power Specification |
|---|---|
| B MPP | 230V AC, 50Hz |
| B MDC | 120V AC, 60Hz |
SAFETY-RELATED COMPONENT WARNING!!
COMPONENTS IDENTIFIED BY MARK Δ 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 MEASUREMENTS TO DETERMINE THAT EXPOSED PARTS ARE ACCEPTABLY INSULATED FROM THE SUPPLY CIRCUIT BEFORE RETURNING THE APPLIANCE TO THE CUSTOMER.
ONKYO: IMAGINATIVE SIGHT & SOUND
FIRMWARE UPDATE-1: DSP Update Procedure
[Preparation]
- A Personal Computer (PC) capable of playing back WAV files and outputting a digital audio signal at 44.1 kHz (sampling frequency).
- Software: Obtain the WAV-formatted firmware (FW) file. Store it on the PC in advance (for PC Update) or burn it to a CD-R as a music disc (for CD Update).
- Connection: Connect the DIGITAL (OPTICAL/COAXIAL) OUTPUT of the PC/CD Player to the DIGITAL (OPTICAL/COAXIAL) INPUT of the HTX-22HDX.
Connection Example
Diagram illustrating connections for DSP update:
- PC (Personal Computer) Connection: A laptop computer is shown with its digital optical output connected via an optical cable to the HTX-22HDX Rear Panel's OPTICAL IN 2 port. A note indicates that a conversion adapter may be needed for different optical terminal shapes.
- CD Player Connection: A CD player is shown with its digital optical output connected via an optical cable to the HTX-22HDX Rear Panel's OPTICAL IN 2 port.
- The PC must be able to handle WAV files and output a digital audio signal at a sampling frequency of 44.1 kHz.
- For WAV-compatible PCs that do not output audio signals at the specified frequency, a commercially-available USB-AUDIO interface unit (e.g., Onkyo-made ND-S1) can be used.
- Set the sampling frequency to 44.1 kHz and the volume to Maximum. Refer to the PC's Owner's Manual for further information.
- Instead of a PC, CD players with a DIGITAL output terminal can be used. Note that CD players need to output a digital audio signal at 44.1 kHz. Some CD players and DVD players may not be suitable for updates if they process the audio signal before output. Burn a CD-R as a music disc for this purpose.
FIRMWARE UPDATE-2: DSP Update Procedure
[Procedure]
- Set the MASTER VOLUME value to 10.
- Hold down the [INPUT] button and then press the [ON/STANDBY] button. The Main FW version will be displayed (e.g., Main1.01/10326AB). The displayed version depends on the current firmware.
- Press the [LISTENING MODE] button. The DSP FW version will be displayed (e.g., D:1.00/10218aDX). The displayed version depends on the current firmware.
- Press the [LISTENING MODE] button. The Check Sum will be displayed (e.g., ChsumM:98E1708B). The displayed version depends on the current firmware.
- Press the [INPUT] button. The display will show TOTAL / AUTO. Pressing the [LISTENING MODE] button changes the mode sequence: AUTO ➔ COAX1 ➔ OPT1 ➔ AUTO.
- Press the [INPUT] button again (no change in display: TOTAL / AUTO).
- Press the [LISTENING MODE] button. The display will show DSP / AUTO. The mode sequence changes: TOTAL ➔ DSP ➔ MAIN ➔ DSP ➔ MAIN.
- Press the [INPUT] button. The display will show S/PDIF Update...
- PC upgrade: Play back the WAV file stored in your PC.
CD upgrade: Play back the FW CD-R with the connected CD player.
After playback ends (approximately 19 seconds), writing will start. This process takes about 25 seconds. The display sequence will be: S/PDIF Update.. ➔ Writing... ➔ Complete! ➔ Clear ➔ Standby mode. - Turn on the unit and confirm the new version number.
[NOTE]
- If "Writing" is not shown even after about 19 seconds of playback, or if the audio signal does not output at a sampling frequency of 44.1kHz, check the connection and settings and try again. If another attempt results in failure, use the other update method.
- DURING FW UPGRADE, DO NOT TURN OFF THE UNIT. DO NOT REMOVE ANY CONNECTIONS. These operations will prevent further firmware upgrades and may necessitate replacing the entire board or IC.
EXPLODED VIEWS-1: Overall / Speaker Section
An exploded diagram illustrating the assembly of the Onkyo HTX-22HDX main unit and a single speaker. Components are shown disassembled to reveal their individual parts and arrangement.
- Main Unit Components: Includes the top cover (A032), secured by 3 pieces of A033 screws. Other screws (SP06 x 5 pcs, A034 x 2 pcs, A134) are shown for various internal and external attachments. The rear panel is indicated by SP15a/b.
- Speaker Components: The speaker assembly includes the speaker grill (SP12), the main woofer unit (SP03), and various feet (SP04 x 4 pcs, SP05 x 8 pcs) for stability. Additional small parts are labeled SP01a/b and SP02a/b.
Refer to "EXPLODED VIEWS-2" for a detailed breakdown of the amplifier section.
EXPLODED VIEWS-2: Amplifier Section
A comprehensive exploded diagram detailing the components and assembly of the amplifier section. Numerous parts are labeled with alphanumeric codes, indicating their position and type within the system. This view is crucial for understanding the internal structure and for component replacement.
Key components shown include various screws (e.g., A105 x 14 pcs, A106 x 4 pcs, A008 x 6 pcs), brackets and panels (e.g., A138, A143, A001, A002, A003, A039), cushions (e.g., A144), and specific integrated circuits or modules (e.g., U01, U02, U02-1, U02-2, U02-3, U03, U03-1, U03-2, U03-3, U03-4, U03-5). Connectors (e.g., P7051), fuses (e.g., F901), and transformers (e.g., T901) are also depicted. The diagram indicates where to refer to the "PC BOARD PARTS LIST" for further details on specific components like Q5001A.
EXPLODED VIEWS-3: HTX-22HDXST Left / Right Speakers
An exploded diagram illustrating the left and right satellite speakers (HTX-22HDXST) of the Onkyo Digital Surround System. The diagram shows the main speaker body connected to its terminal section via part SP20a/b.
- Left Speaker (HTX-22HDXST <L>): Features a terminal connection with White/Black wiring.
- Right Speaker (HTX-22HDXST <R>): Features a terminal connection with Red/Black wiring.
Note: The speaker grill cannot be removed.
SCHEMATIC DIAGRAMS - Power Supply Section
Diagram 1/8: Power Supply Section
This schematic diagram details the power supply circuitry of the Onkyo HTX-22HDX. It illustrates the flow of power from the AC inlet through various transformers, rectifiers, filters, and regulators to provide the necessary voltages for different sections of the system.
Key components include input fuses (F901A, F901B), power transformers (T901, T9002), and a bridge rectifier (D9006). Various diodes (e.g., D9001, D9003, D9004, D9005, D9007, D9008, D9009, D9105, D9112, D9113), capacitors (e.g., C9001, C9002, C9003, C9004, C9005, C9006, C9007, C9104, C9105, C9106, C9110), and resistors are strategically placed for voltage regulation and filtering. Relays (RL9001) are also part of the circuit. Connections to the AC INLET (P9003) and other board sections (BAAF-0326, BADIS-0435, BADIS-0332) are clearly indicated.
Important Notes for Schematics:
- Components identified by a Δ mark are critical for safety and must be replaced only with the specified part number.
- Voltage measurements (indicated by □) are DC voltage (no input signal).
- All PNP transistors are equivalent to 2SA1015-GR unless otherwise noted.
- All NPN transistors are equivalent to 2SC1815-GR unless otherwise noted.
- All diodes are equivalent to 1SS133 unless otherwise noted.
- Electrolytic capacitors (()) are in μF/WV.
- All capacitors are in pF/50WV unless otherwise noted (e.g., 030=3pF, 330=33pF, 331=330pF, 333=0.033μF).
- All resistors are in Ohms 1/4Watts unless otherwise noted.
- Thick lines on the PC board represent the printing side of the parts.
- The circuit is subject to change for improvement.
CAUTION: Fuse Replacement
For continued protection against fire hazard, replace only with a fuse of the same type and rating indicated. The symbol Γ located near the fuse indicates that the fuse used is a slow operating type.
ATTENTION: Afin d'assurer une protection permanente contre les risques d'incendie, remplacer uniquement par un fusible de meme type et calibration comme indique. Ce symbole Γ indique que le fusible utilise est de type lent. Pour une protection permanente, n'utiliser que des fusibles de meme type. Ce dernier est indique la ou le present symbole est appose.
SCHEMATIC DIAGRAMS - Power Amplifier Section
Diagram 2/8: Power Amp. Section
This schematic diagram illustrates the power amplifier section, responsible for amplifying audio signals before sending them to the speakers. It shows the interconnections between various amplifier stages and their associated components.
The diagram features several integrated circuits, including LM4766 (for SURR ch AMP and FRONT ch AMP), LM2876 (for CENTER ch AMP), and LM3886 (for SW ch AMP). Numerous transistors (e.g., Q5001, Q5101, Q5201, Q5301, Q5600-Q5617, Q5701A/B, Q5703-Q5706, Q5671, Q9201), diodes (e.g., D5907, D5901-D5906, D9501, D9502, D5301, D9204), and relays (RL9501, RL9502, RL5301) are part of the amplification and protection circuits. The schematic details connections to the Audio Signal Processor (ASP) section and the main amplifier section, along with various speaker outputs (FL SPOUT, FR SPOUT, C SPOUT, SW SPOUT, SL SPOUT, SR SPOUT).
SCHEMATIC DIAGRAMS - Audio Signal Processor Section
Diagram 3/8: Audio Signal Processor Section
This schematic diagram outlines the audio signal processor section, which handles the digital and analog audio signals within the HTX-22HDX system. It shows the central DSP IC and its connections to various audio inputs and outputs.
The core of this section is the R2A15218FP (Q5501) integrated circuit, which functions as the main DSP. It receives audio inputs from various sources (P5901, P5902, P5904, P5903) including IN1R/L, IN2R/L, IN3R/L, and SB PreOut R/L. The diagram also includes operational amplifiers (e.g., NJM4580, NE5532APSR), transistors, resistors, and capacitors that process and route the audio signals. Connections to the main amplifier section and other relevant boards are detailed, illustrating the signal path for different audio channels (e.g., DAC FR, DAC FL, DAC SW, DAC CT, DAC SR, DAC SL, DAC SBR, DAC SBL).
SCHEMATIC DIAGRAMS - Microprocessor Section
Diagram 4/8: Microprocessor Section
This schematic diagram details the microprocessor section, which controls the overall operation and various functions of the Onkyo HTX-22HDX system. It shows the central microprocessor and its interfaces with other system components.
The main control is managed by the MPD70F3746 (Q701) microprocessor. It interfaces with other integrated circuits such as the PCM9210 (Q302) and PCM1690, which are likely involved in audio processing and digital-to-analog conversion. The diagram illustrates connections to various input/output ports (e.g., RI, COAX, OPT1, OPT2), the display section, and other circuit boards. Key components include crystals (e.g., 24.576MHz) for timing, various diodes, transistors, resistors, and capacitors that support the microprocessor's operations and signal routing.
SCHEMATIC DIAGRAMS - Display Section
Diagram 5.1/8: Display Section (HTX-22HDX)
This schematic diagram provides a detailed view of the display section for the HTX-22HDX, outlining the components responsible for driving the front panel display.
The display is controlled by the M66005 (Q7501) integrated circuit, which manages the segments (SEG0-SEG35) and digits (DIG00-DIG15) of the display. Other components such as transistors (Q7502, Q7504), an infrared receiver (U7541), and various diodes (D7502, D7561, D7562) are integrated into the circuit. Connections to the microprocessor section and the power supply are shown, indicating the data and control lines (FLDCLK, FLDSDO, FLDCS, FLDRST) that enable the display's functionality. The diagram also reiterates important safety notes and fuse replacement cautions, similar to those found in the power supply section.
SCHEMATIC DIAGRAMS - DSP Section
Diagram 6/8: DSP Section
This schematic diagram provides a detailed view of the Digital Signal Processor (DSP) section, which is central to the audio processing capabilities of the HTX-22HDX. It highlights the main DSP IC and its associated memory and control interfaces.
The core of this section is the D790E001BZDH300 DSP integrated circuit, which is supported by a K4S641632K memory IC. The diagram illustrates extensive connections for data (EM_D[0-31]) and address lines (EM_A[0-16]), as well as control signals such as EM_CAS, EM_RAS, EM_WE, EM_CKE, and EM_CLK, which are essential for memory access and DSP operation. Timing is provided by a 17.734MHz crystal (X8300). Various other integrated circuits, transistors, resistors, and capacitors are included to ensure proper signal integrity and power delivery within the DSP section. Connections to the HDMI part and other system components are also detailed.
SCHEMATIC DIAGRAMS - HDMI Section
Diagram 7/8: HDMI Section
This schematic diagram details the HDMI section, which manages high-definition audio and video signals within the Onkyo HTX-22HDX system. It shows the HDMI receiver/processor IC and its connections to multiple HDMI inputs and outputs.
The central component is the ADV7623 (Q8101) HDMI receiver/processor. The diagram illustrates three HDMI input ports (HDMI IN 1, HDMI IN 2, HDMI IN 3) and one HDMI output port (HDMI OUT). Each port includes connections for TMDS data pairs (D0±, D1±, D2±), clock pairs (CK±), DDC (Display Data Channel) lines (DDC DATA, DDC CLK), CEC (Consumer Electronics Control) lines, and 5V power detection. Various diodes, transistors, and passive components are integrated to ensure proper signal integrity, protection, and communication within the HDMI interface. Power supply connections (e.g., +1.8VHD, +3.3VHD) are also detailed.
SCHEMATIC DIAGRAMS - Speaker Terminal Section
Diagram 8.1/8: Speaker Terminal Section
This schematic diagram illustrates the speaker terminal section, detailing the connections and protection circuitry for the various speaker outputs of the Onkyo HTX-22HDX system.
The diagram shows connections for the main speaker outputs (SP OUT), including Front Left (FL), Front Right (FR), Center (C), Surround Left (SL), and Surround Right (SR). Each speaker output path incorporates relays (e.g., RL5851, RL5852, RL5853) and diodes (e.g., D5851, D5852, D5853) for protection and switching. A "CLAMPER" component (P5901) is also included. Various resistors and capacitors are part of the filtering and impedance matching networks for optimal audio delivery to the speakers.
PACKING PROCEDURE
This section illustrates the proper packing procedure for the Onkyo HTX-22HDX Digital Surround System, showing how the main unit and its accessories are arranged within the carton for safe transport.
The diagram provides an exploded view of the packing materials and components. The main unit is secured with polyfoam inserts (02, 03, 07) and placed within the carton (01a/b, 10). Accessories are organized in poly bags (13, 20) and include:
- Remote control (A809)
- Batteries (A811 x 2 pcs)
- Speaker cables (21: 3.5m x 2 pcs, red line)
- Rubber feet (22: 8 pcs for front speakers; 14: 4 pcs for subwoofer)
- Instruction manuals (A817, A833, A834, A835)
- Instruction sheets (A819, A830)
- Warranty card (A832)
- AC cords (P901)
Additional packing materials include miramat bags (04), tape (06), and non-woven sheets (08 inner, 09 outer).
EXPLODED VIEW PARTS LIST
This section provides a comprehensive list of parts for the Onkyo HTX-22HDX, categorized by section (Amplifier Section, Speaker Section) and type (e.g., Chassis Screw, Trans Coil, Tuner Unit). Each entry includes the reference number, part name, description, quantity, part number, and remarks.
Important Notes for Parts Lists:
- Parts marked by "NSP" are generally unavailable as they are not in the Master Spare Parts List.
- Components identified by the mark Δ are critical for risk of fire and electric shock. Replace these only with the specified part number.
- <MPP> indicates parts for the European model only.
- <MDC> indicates parts for the Canadian model only.
PRINTED CIRCUIT BOARD PARTS LIST
This section provides a detailed list of components found on the Printed Circuit Boards (PCBs) of the Onkyo HTX-22HDX. The list is organized by PWB (Printed Wiring Board) number and includes circuit number, part name, description, quantity, part number, and remarks.
Categories of components include:
- Semi Conductors: Diodes (e.g., D8100, D8101, D8102, D5301, D5671, D5672, D5901-D5907, D702, D703, D704, D9204, D9204A, D9501, D9501A, D9502, D7502, D7503, D7561, D7562, D9001-D9005, D9105, D9112, D9113), Zener Diodes, and various Integrated Circuits (ICs) such as ADV7623 (Q8101), MP2363DN-LF-Z (Q8102, Q8103), SN74CB3Q3305PWR (Q8104), EN25Q32A-100HIP (Q8106), S-812C50BUC-C5ET2G (Q8107), D790E001BZDH300Z (Q8301), TC7WU04FU (Q8302), ES29LV160ET-70TG (Q8303), K4S641632K-UC60 (Q8304), TC74VHC541FT (Q8306), XC6220B12BPR (Q8307), XC6221B182MR (Q8501), 74HCU04F (Q101), PCM1690DCAR (Q301), PCM9210PTR (Q302), NE5532APSR (Q401, Q480-Q483), NJM4580M-D (Q402, Q403, Q5503, Q5630), LM4766TF (Q5001, Q5101), LM2876TF (Q5201), LM3886TF (Q5301), R2A15218FP (Q5501), 78M15HF (Q5670), UPC78M15AHF-AZ, 79M15HF (Q5671), R1EX25064ASA00A (Q700), MPD70F3746GJ-GAE-AX (Q701), KRA102S (Q703), RN2402, KRC107S (Q704), S-812C50AUA-C3E (Q707), S-812C33AUA-C2N (Q708), XC6221B332MR (Q710), LM61CIZ (Q981), M66005-0001AHP (Q7501). Transistors (TR) are also listed (e.g., Q8261-Q8266, Q5600-Q5617, Q703-Q705, Q709, Q711-Q716, Q9202-Q9207, Q7504, Q7505, Q9001, Q9101).
- Trans Coils: Cores (e.g., L8101-L8103, L8106-L8108, L8114, L8116-L8121, L8300, L8304, L8305, L8307, L8308, L8501-L8503, L701, L702, L100-L103, L300-L301, L304-L306, L7501, L7502, L9001, L5851-L5855), Choke Coils (e.g., L8104, L8109, L8306, L5301), EMIFILs (e.g., L8301, L8302, L8309), and Transformers (e.g., T901, T9002).
- Capacitors: Various types including C-CERA C, UTSP C, CHIP ELECT C, UPZ C, TF C, MKT C, C-FILM C, VR C, and ELECT C.
- Resistors: Primarily C-CARBON R and METAL R types, with various resistance values.
- SW TRM (Switch Terminal): Includes TRMs (E100, E101, E901, P5851), Sockets (JL9004B, JL9103B, JL981A, JL981B, P4101A, P4102A, P5001B, P5101B, P5201B, P701A, P7501B, P8101B, P8102B, P8105C, P9102A, P9501B, P9002, P7003A, P7004A), Plugs (P100, P101, P4101B, P4102B, P5302, P5902, P7004B, P702, P8103, P8104, P8107, P8108, P8191, P9001, P9003), and Relays (RL5301, RL9501, RL9502, RL5851-RL5853, RL9001).
- Tuner Unit: PHT CP (U100, U101).
ONKYO Corporation Contact Information
ONKYO CORPORATION
Service Dept. Technical Support: 2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN
Tel: 072-831-8023 Fax: 072-831-8163
ONKYO U.S.A. CORPORATION
18 Park Way, Upper Saddle River, N.J. 07458, U.S.A.
Tel: 800-229-1687, 201-785-2600 Fax: 201-785-2650
Website: http://www.us.onkyo.com/
ONKYO EUROPE ELECTRONICS GmbH
Liegnitzerstrasse 6, 82194 Groebenzell, GERMANY
Tel: +49-8142-4401-0 Fax: +49-8142-4401-555
Website: http://www.eu.onkyo.com/
ONKYO EUROPE ELECTRONICS GmbH (UK BRANCH)
The Coach House 81A High Street, Marlow, Buckinghamshire, SL7 1AB, UK
Tel: +44-(0)1628-473-350 Fax: +44-(0)1628-401-700
ONKYO CHINA LIMITED
Unit 1&12, 9/F, Ever Gain Plaza Tower 1, 88, Container Port Road, Kwai Chung, N.T., Hong Kong.
Tel: 852-2429-3118 Fax: 852-2428-9039
Website: http://www.ch.onkyo.com/
ONKYO HOMEPAGE: http://www.onkyo.com/
