Onkyo HT-R680 AV Receiver Service Manual – PDF DOWNLOAD
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Official Onkyo HT-R680 AV receiver service manual (Ref. No. 4195, 2010). Covers complete troubleshooting flowcharts, schematic diagrams, wiring diagrams, exploded views, firmware update procedures, and full illustrated parts list. Also applicable to TX-SR578/608, HT-R580/980 and DTR-20.2/30.2 models. Essential reference for electronics technicians repairing Onkyo home theatre receivers. Instant PDF download – 116 pages of factory-level technical documentation.
Description
Onkyo HT-R680 AV Receiver Service Manual Repair, Schematics & Parts List PDF DOWNLOAD
Description
Onkyo HT-R680 AV Receiver – Official Factory Service Manual
This is the official Onkyo factory service manual for the HT-R680 AV receiver — a comprehensive Onkyo HT-R680 repair and troubleshooting guide covering every board-level diagnostic, schematic diagram, parts replacement, and firmware update procedure. Whether you are diagnosing a dead unit, tracing a no-sound fault, or replacing components, this manual is the definitive technical reference for qualified electronics service technicians.
Also covers related models: TX-SR578, TX-SR608, TX-SA578, HT-R580, HT-R980, HT-RC260, DTR-20.2, DTR-30.2
📋 File Details
| Detail | Info |
|---|---|
| Manual Name | Onkyo HT-R680 AV Receiver Service Manual |
| Reference No. | Ref. No. 4195, RC-764M |
| Models Covered | HT-R680 (B), HT-R680 in HTiB HT-S6300 & HT-S7300; also TX-SR578/608, TX-SA578, HT-R580/980, HT-RC260, DTR-20.2/30.2 |
| Year | 2010 (May 2010) |
| PDF Quality | High quality, text-searchable |
| Total Pages | 116 pages |
| File Format | |
| Power Supply | 120V AC, 60Hz (North American model) |
📚 Manual Contents & Structure
🔧 Troubleshooting Flowcharts
Step-by-step diagnostic decision trees covering the most common fault conditions:
- Troubleshoot-1 – No Power: Power supply board (BAETC-0376/0390), MPU board (BADG-0364), fuse F901 diagnosis, sub-transformer and peripheral circuit checks
- Troubleshoot-2 – No Display: Fluorescent display tube, display board (BADIS-0373/0387), -VP board, serial communication signal waveforms (FLD_CLK, FLD_SDD, FLD_CS), oscilloscope reference waveforms
- Troubleshoot-3 – No Sound: Covers no sound from HDMI input, COAXIAL/OPTICAL input, and analog input. Includes signal path checks for AF board (BAAF-0348), TRM board (BATRM-0368), HDMI board (BAHDM-0403), MPU board, video board; full waveform references (DIR_FLR, DSP_FLR, HDMI_MCK, HDMI_LRCK etc.)
- Troubleshoot-4 – No Picture: HDMI and Component/S-Video input signal tracing via BAVD-0375/0389 Video Board and BADG-0403 HDMI Board
📐 Block Diagrams & Schematics
- HDMI Video & Digital Audio Section Block Diagram – Full signal path of HDMI Rx/Tx (SiI9387, Q8661, Q8161), TMDS, DDC, CEC, HPD, ARC, I2S, S/PDIF routing
- Audio Block Section Schematic (BAAF-0348 AF Board) – Front L/R, Center, Surround L/R/Back speaker outputs; tone, inverting amp stages, power amp section (+29dB stages), muting circuits, VCR/DVR out, MIC detection
- Video Block Section Schematic (BAVD-0375/0389) – Component, S-Video, composite video input switching; ADINY/B/R, RGB signal routing
- Protection Detection Circuit – 2SA1962/2SC5242 output transistor protection, VPRO/IPRO/VOLH/SEC1H logic, peripheral transistor network details
- Wiring Diagram – Complete inter-board cable routing (MPU/DAC, Display, AMP, Video, HDMI boards with connector pin references)
💾 Firmware Update Procedures
- S/PDIF Firmware Update – Via optical digital input using CD player or PC with WAV file output; MMPU, VMPU, and DSP firmware flashing (AUTO ALL / individual mode)
- VSP Update Procedure (Gprobe) – Full 6-step PC-based update via RS232C: software installation, connection to rear panel slit, batch file execution, flash write confirmation
🖼️ Exploded Views (3 diagrams)
- Exploded View 1 – Main chassis assembly with transformer T901, fuse F901, all mechanical hardware and PCB assemblies (A-series and P-series parts with quantities)
- Exploded View 2 – Internal sub-assembly components (U-series boards, P701, U0040/0041)
- Exploded View 3 – Power amplifier transistor array (Q6050–Q6066 output transistors with isolation sheets)
📦 Illustrated Parts List
Comprehensive component-level spare parts list covering:
- Semiconductors – Transistors (2SC4468, 2SC5198, 2SA1962, 2SC5242), diodes (D5SBA20, KDS4148U, zener types), ICs
- Resistors – Carbon resistors (R-series), chip resistors, resistor networks (RM7LJ220X04)
- Capacitors – Ceramic capacitors (CK725 series), chip tantalum capacitors (TCSCS0J226MAAR)
- Connectors & Sockets – HDMI sockets (47266-4101), IMSA-series multi-pin sockets, wire traps, FFC connectors
- Model variants noted – Black model (B), Canadian model (CMDC / C2MDC) part number variations listed throughout
Don’t guess — diagnose with confidence. This official 116-page Onkyo HT-R680 service manual gives you every troubleshooting flowchart, board-level schematic, wiring diagram, and parts reference you need to repair your receiver the right way. Download instantly and get straight to work.
