Onkyo TX-SR501/E User Manual

TX-SR501/E
SERVICE MANUAL
SERVICE MANUAL
Ref. No. 3772
062003
120V AC, 60Hz
230-240V AC, 50Hz
120/220-230V AC, 50/60Hz
220V AC, 50Hz
AV RECEIVER
MODEL
TX-SR501/E
Black, Golden and Silver models
BMDD,BMDC
BMPP,SMPP,BMPA,GMPA
BMWT,GMWT,GMWR,GMWQ
GMGK
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 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.
Page 1

Onkyo TX-SR501/E Specifications

General

Signal to Noise Ratio	100 dB
Speaker Impedance	6 - 16 Ohms
Tuner Type	AM/FM
Inputs	5 analog audio, 2 digital (1 coaxial, 1 optical)
Outputs	Subwoofer Pre-Out
Input Sensitivity	200 mV
Video Inputs	Composite
Video Outputs	Composite
Input Impedance	50 kOhms

Summary

SAFETY-RELATED COMPONENT WARNING!!

Critical Components Warning

Critical components identified by mark are vital for fire and electric shock risk.

Specifications

Amplifier Section Specifications

Service Procedures

Replacing the Fuses

Instructions on replacing fuses, emphasizing using the same type and rating for fire hazard protection.

Unit Initialization and Safety Checks

Exploded View

Block Diagram

Schematic Diagram 5: Power Amplifier Section

Schematic Diagram 6: Power Supply and Speaker Terminals

IC Block Diagrams and Descriptions

Terminal Description: Main Microprocessor

Adjustment and Confirmation Procedures 1

Idling Current Adjustment

Procedure for adjusting the idling current of amplifier channels.

Confirmation of Protection Circuit

Adjustment and Confirmation Procedures 2

Confirmation of Current Detection Circuit

Confirmation of Voltage Sensor and Thermal Protect

Exploded View - Parts List