ONKYO TX-8222 - Service Manual Immediate Download

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.

TX-8222

SPECIFICATIONS

Amplifier Section

Tuner Section

General

Audio Inputs

Audio Outputs

Specifications and features are subject to change without

notice.

Rated Output Power (FTC) (North American)

All channels:

50 watts minimum continuous power

per channel, 8 ohm loads, 2 channels

driven from 20 Hz to 20 kHz, with a

maximum total harmonic distortion of

0.08 %

Rated Output Power (IEC) (European and Australian)

2 ch

70W at 4 ohms, 1 kHz, 2 ch driven

Maximum Output Power (JEITA) (Asian)

90 W at 4 ohms, 1 kHz, 2 ch driven

Dynamic Power

North American:

135W + 135W (2

)

105W + 105W (4

)

70 W + 70W (8

)

European and Australian:

110W + 110W (2

)

90 W + 90W (4

)

55 W + 55W (8

)

THD (Total Harmonic

Distortion)

0.08 % (Power Rated)/ 0.08 % (1 kHz,

1 W)

Damping Factor

60 (Front, 1 kHz, 8 )

Input Sensitivity and

Impedance

150 mV/ 50 k (LINE)

2.5 mV/ 50 k (PHONO MM)

Output Lev el and

Impedance

150 mV/ 2.2 k (REC OUT)

Frequency Response 10 Hz~100 kHz/ +1 dB~ 3 dB (CD)

Tone Control

±10 dB, 100 Hz (BASS)

±10 dB, 10 kHz (TREBLE)

Signal to Noise Ratio 100 dB (LINE, IHF-A)

80 dB (PHONO, IHF-A)

Speaker Impedance

Tuning Frequency

Range

NorthAmerican: 87.5 MHz~107.9 MHz

Others: 87.5 MHz~ 108.0 MHz

Usable Sensiti vity

Stereo: 22.2 dBf (75

IHF)

Mono: 15.2 dBf (75

IHF)

Signal to Noise Ratio Stereo: 67 dB (IHF-A)

Mono: 73 dB (IHF-A)

THD

Stereo: 0.5 % (1 kHz)

Mono: 0.3 % (1 kHz)

Frequency Response 30 Hz~ 15 kHz / ±1 dB

Stereo Separation

40 dB (1 kHz)

Tuning Frequenc y

Range

NorthAmerican: 530 kHz~1710 kHz

Others: 522 kHz~ 1611 kHz

Usable Sensitivity

300 µV

Signal to Noise Ratio 40 dB

THD

0.7 %

Power Supply

NorthAmerican: AC 120V, 60 Hz

European: AC 230-240V, 50 Hz

Others: AC 230-240V, 50Hz

Power Consumption

NorthAmerican: 2.1A

European: 180W

Others: 180W

Standby Power

Consumption

North American:0.2W

Others: 0.3W

Dimensions

435

150

332 mm

17-1/8"

5-7/8"

13-11/16"

Weight

7.5 kg

16.5 lbs.

Analog Inputs

PHONO, CD,TAPE 1,TAPE 2, LINE 1,

LINE 2

Analog Outputs

TAPE 1,TAPE 2

Speak er Outputs

SPEAKERS A

SPEAKERS B

Phones

IR Input/Output

1/1

2. To initialize the unit

The TX-8222 contain a micro processor for signal processing

and control functions. In very rare situations, severe interference,

noise from an external source, or static electricity may cause it to lockup.

In the unlikely event that this happens, unplug the power cord from the

wall outlet, wait at least Þve seconds, and then plug it back in again.

3. Safety-check out

(U.S.A. model only)

After correcting the original service problem, perform the

following safety check before releasing the set to the customer.

Leakage Current Check

Measure leakage current to a known earth ground(water pipe,

conduit, etc.) by connecting a leakage current tester between

the earth ground and exposed metal parts of the appliance

(input/output terminals, screwheads,metal overlays, etc.).

Plug the power supply cord directly into a 120V AC 60 Hz outlet

and turn Standby switch on. Any current meausred must not

exceed 0.5mA.

1. Replacing the fuses

This symbol located near the fuses indicates that the

fuse used is fast operating type. For continued protection against

fire hazard, replace with same type fuse. For fuse rating refer to

the marking adjacent to the symbol.

Ce symbole indique que le fusible utlise est a rapide.

Pour une protection permanente, n'untiliser que fusibles de

meme type. Ce darnier est la qu le present symbol est

appse.

CIRCUIT NO. PART NO.

DESCRIPTION

Note: <D>:North American model only

<P>: European model only

<A>: Australian model only

To reset the TX-8222 to its f actor y defaults, turn it on and,

while holding down the VIDEO button, press the

ST ANDBY/ON button. When the reset is complete,

"Clear" appears on the display and the TX-8222 enter

Standby mode.

Memory backup

The TX-8222 use a batter y-less memory backup sys-

tem (C704) in order to retain r adio presets and other settings

when it's unplugged or in the case of a po wer failure.

Although no batteries are required, it must be plugged

into an AC outlet in order to charge the backup system.

Once it has been charged, the TX-8222 will retain the

settings for several weeks, although this depends on

the environment and will be shorter in humid climates.

F901

252326GR or

5A-UL/T-233 or

252258GR

5A-T/UL-ST2 <D>

F902

252075GR or

2.5A-SE-EAK or

252275GR

2.5A-SE-TL250V <P/A>

F903

252326GR or

5A-UL/T-233 or

252258GR

5A-T/UL-ST2 <D>

252075GR or

2.5A-SE-EAK or

252275GR

2.5A-SE-TL250V <P/A>

TX-8222

SERVICE PROCEDURES

TX-8222

EXPLODED VIEW

TX-8222

A212

x 3 pcs.

A003

x 5 pcs.

A003

x 2 pcs.

A003

x 10 pcs.

A203

x 2 pcs.

A009

x 2 pcs.

A811

x 2 pcs.

A003

x 2 pcs.

A003

x 2 pcs.

A008

x 4 pcs.

E801

x 4 pcs.

A003

x 2 pcs.

A220

x 2 pcs.

A301

x 21 pcs.

A003

x 3 pcs.

A003

x 3 pcs.

A018

x 5 pcs.

A003

x 2 pcs.

A003

x 2 pcs.

A202

x 6 pcs.

Q521A

x 4 pcs.

A011

x 3 pcs.

A205

x 4 pcs.

A003

x 4 pcs.

A206

x 4 pcs.

A351

x 3 pcs.

A210

A350

A001

A607

A201

A002

P715

P704

P901

U023

U017

U012

U022

T901

U016

U015

U026

U05

U01

U02

U014

U013

A006

F901

D911

Q521

Q524

Q522

Q523

F903

A010

A014

A003

A302

A300

A023

A005

E801

A007

A352

A214

A355

F913

F914

F902

A028

P501B

A219

TX-8222

BLOCK DIAGRAM

DOWN

STB

DATA

TUNL

FLAC2

FLAC1

-VP

MUT

REMIN

FLDRST

FLDCS

FLDCLK

FLDSDO

TMUT

PLLCLK

PLLSDO

STEREO

RDSCLK

RDSDAT

POW

+5.6V

+5V_MPU

+5V_CPU

+12V

-12V

TU-L

TU-R

IRIN

IROUT

KEYINT0

KETINT1

KEYINT2

KEYINT3

LEDSTBY

+5.6V

VOLTAG

PHONO

EQUALIZER

Q301

PHONO

REC

PLAY

TAPE-1

PLAY1

L1/

DVD

LINE1

DVD

TUNER

PLAY2

REC2

REC

PLAY

TAPE-2

LINE2

AUDIO

OUT

MOTOR

DRIVE

Q481

DISPLAY / CONTROL

CPU

VOLUME

MICROPROCESSOR

Q701

FL DRIVER

Q7502

FL DISPLAY

Q7501

PACK

FM/AM TUNER

TACT KEYS

Audio

Selector

Phono

Q302

PHONO

REC1

ANALOG

SWITCH

BASS

TREBLE

Q922

D921

R641

Q491

MUTING

R393

BALANCE

D920

REMOTE

CONTROL

SENSOR

IRIN

IROUT

ST-BY

Q402

R409

Q401

R415

Q706

Q701

BCD