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Onkyo TX-DS797 Service Manual

Onkyo TX-DS797
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TX-DS797
SAFETY-RELATED COMPONENT
WARNING!!
COMPONENTS IDENTIFIED BY MARK ON THE
SCHEMATIC DIAGRAMS 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
AV RECEIVER
Black, Golden and Silver models
MODEL TX-DS797
Ref. No. 3714
102001
BMDD
BMPP,SMPP,BMPA,GMPA
BMWT,GMWT,GMWR
GMGT
120V AC, 60Hz
230-240V AC, 50Hz
120/220-230V AC, 50/60Hz
220-230V AC, 50Hz
STANDBY/ON
OFF
ON
POWER
STANDBY
PHONES
MASTER VOLUME
FM AM PHONO C
DTAPE
VIDEO 4 VIDEO 5VIDEO 3VIDEO 2VIDEO 1
DVD
OFFZONE 2REC OUTDISPLAY DIMMER
UPSAMPLING
AUDIO
SELECTOR
ZONE 2
()
GRN
REC
()
RED
S VIDEO AUDIO
VIDEO L R
DIGITAL
VCR 2VCR 1
VIDEO 5/VIDEO CAM INPUT
AV
RECEIVER
TX
-
DS797
CLEAR
DSP
A
-
FO RM LISTENING MODE MEMORY
THXSURROUNDDIRECT STEREO
MEMORYFM MODE
ENTER
RE TURN
SETUP
TUNI NG
PRESET

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Onkyo TX-DS797 Specifications

General IconGeneral
TypeAV Receiver
Channels7.1
THX CertifiedYes
Total Harmonic Distortion (THD)0.08%
Input Sensitivity200 mV
Surround Sound ModesDolby Digital, DTS, THX Surround EX
Amplifier TypeDiscrete
Speaker Impedance8 ohms
Power Output100W per channel (8 ohms, 20Hz-20kHz, 0.08% THD)
Signal-to-Noise Ratio100 dB
Digital Audio InputsOptical, Coaxial
Component Video Inputs2
Digital Inputs5

Summary

Safety-Related Component Warning

Technical Specifications

Amplifier Section Specifications

Technical details for power output, distortion, damping factor, and input sensitivity.

Tuner Section Specifications

Technical details for FM and AM tuning range, sensitivity, and signal-to-noise ratio.

General Specifications and Dimensions

Power supply, consumption, dimensions, and weight of the AV receiver.

Remote Controller Specifications

Specifications for the remote controller's transmitter, signal range, and power supply.

Service Procedures

Replacing Fuses

Procedure for replacing fuses, emphasizing using the correct type and rating.

Unit Initialization Procedure

How to reset the unit to factory settings to resolve abnormal operations.

Safety Check Procedures (USA Model)

Safety checks, including insulating resistance tests, required before customer release.

Memory Preservation System

Explanation of the unit's battery-less memory preservation system.

Voltage Selector Setting (Worldwide Models)

Instructions for setting the voltage selector to match the local power supply.

Wiring Diagram View 1

Wiring Diagram View 2

Overall Block Diagram

Block Diagram 1: Audio and Video Signal Paths

Block Diagram 2: Control and Power Systems

Main Microprocessor Connection Diagram

Main Microprocessor Terminal Descriptions

Main Microprocessor Connection Diagram 1

Main Microprocessor Connection Diagram 2

Submicroprocessor Connection Diagram

Submicroprocessor Terminal Descriptions

Adjustment and Confirmation Procedures 1

Idling Current Adjustment

Detailed steps for adjusting idling current for front, center, and surround channels.

Protection Circuit Confirmation

Confirms speaker relay operation during power on/off and DC detection.

Adjustment and Confirmation Procedures 2

Current Detection Circuit Confirmation

Steps to confirm speaker relay behavior based on load conditions.

Fan Operation Confirmation

Checks fan speed operation under different signal and resistor conditions.

Adjustment and Confirmation Procedures 3

FL Tube Test Modes

Details on entering and using various test modes for the FL display tube.

Voltage Sensor Confirmation

Confirms voltage sensor operation and speaker relay behavior in specific test modes.

Exploded View: Front Panel Section

Exploded View: Overall Assembly

Exploded View Parts List (1/5)

Exploded View Parts List (2/5)

Exploded View Parts List (3/5)

Exploded View: Rear Panel Section

Schematic Diagram 1: Display Section

Schematic Diagram 2: DSP and Microprocessor Sections

Schematic Diagram 3: Audio I/O Section

Schematic Diagram 4: Preamplifier Section

Schematic Diagram 5: Power Amplifier Section

Schematic Diagram 6: Power Amplifier Section 2

Schematic Diagram 7: Power Supply, Fan Control, Speaker Terminals

Schematic Diagram 8: Video Section

Schematic Diagram 9: Component Video and Mother Sections

Printed Circuit Board View (Soldering Side B 2)

Printed Circuit Board View (Soldering Side 3)

Printed Circuit Board View (Soldering Side 7)

Printed Circuit Board View (Soldering Side 8)

Printed Circuit Board View (Soldering Side B 9)

Printed Circuit Board View (Soldering Side 1)

Printed Circuit Board View (Soldering Side 1 - Display)

Printed Circuit Board View (Soldering Side 4)

Printed Circuit Board View (Soldering Side 4 - Preamplifier)

Printed Circuit Board View (Soldering Side 5)

Main Circuit PC Board Parts List

Power Supply Circuit PC Board Parts List

Speaker Terminal PC Board Parts List

Speaker Terminal SR/SB PC Board Parts List

Thermal Detector PC Board Parts List

Power Amplifier Driver PC Board Parts List

Power Supply and Preamplifier Circuit PC Board Parts List

Preamplifier and Audio Terminal PC Board Parts List

Audio Terminal and Connector PC Board Parts List

Composite Video and S-Video Circuit PC Board Parts List

RI Terminal and Display Circuit PC Board Parts List

Volume Control and Front Video PC Board Parts List

Packing Procedures (120V Model)

Packing Procedures (Other Models)

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