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Onkyo TX-8222 User Manual

Onkyo TX-8222
40 pages
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TX-8222
SERVICE MANUAL
STEREO RECEIVER
Black and Silver models
MODEL TX-8222
Ref. No. 3945
062006
120V AC, 60Hz
230-240V AC, 50Hz
BMDD,BMDC
BMPP,SMPP,BMPA
RC-666S
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.
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Onkyo TX-8222 Specifications

General IconGeneral
Frequency Response10 Hz-100 kHz (+1 dB, -3 dB)
Signal-to-Noise Ratio100 dB (Line, IHF-A)
Speaker Impedance4 - 16 ohms
Number of Channels2
Dimensions435 x 151 x 328 mm (W x H x D)
Weight24.3 lbs
Tuner SectionFM/AM
Headphone OutputYes
Power Output50 W/ch (8 ohms, 20 Hz - 20 kHz, 0.08% THD)
Total Harmonic Distortion0.08%
Input Sensitivity200 mV
Tuning rangeFM: 87.5-108 MHz, AM: 522-1611 kHz
Input Sensitivity and Impedance200 mV/47 kΩ
Signal-to-Noise Ratio (Line, IHF-A)100 dB
FM Sensitivity1.0 μV (IHF)
Dimensions (W x H x D)435 x 150 x 391 mm
Frequency Response (Direct Mode)10 Hz - 100 kHz, +1 dB, -3 dB

Summary

SAFETY-RELATED COMPONENT WARNING!!

SPECIFICATIONS

SERVICE PROCEDURES

Safety-check out

Procedures for safety checks, including leakage current measurements.

SCHEMATIC DIAGRAM 1 AUDIO SECTION

SCHEMATIC DIAGRAM 1-2 Power amplifier section

SCHEMATIC DIAGRAM 3 MICROPROCESSOR OR SECTION

SCHEMATIC DIAGRAM 4 POWER SUPPLY SECTION

IC BLOCK DIAGRAMS AND DESCRIPTIONS

MICROPROCESSOR-CONNECTION DIAGRAM

MICROPROCESSOR-TERMINAL DESCRIPTION 1

MICROPROCESSOR-TERMINAL DESCRIPTION 2

ADJUSTMENT AND CONFIRMATION PROCEDURES 1

Idling Current Adjustment

Steps to adjust trimmer resistors for correct idling current.

Protection Circuit Confirmation

Procedures to verify the operation of speaker relays and DC detection.

ADJUSTMENT AND CONFIRMATION PROCEDURES 2

Current Detection Circuit Confirmation

Steps to confirm current detection circuit operation with specific loads.

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