Onkyo TX-8222 Service manual

SERVICE MANUAL

SERVICE MANUAL

STEREO RECEIVER

MODEL TX-8222

TX-8222

Ref. No. 3945

062006

Black and Silver models

BMDD,BMDC
BMPP,SMPP,BMPA

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.

RC-666S

120V AC, 60Hz
230-240V AC, 50Hz

SPECIFICATIONS

TX-8222

Amplifier Section

Rated Output Power (FTC) (North American)

All channels: 50 watts minimum continuous power

Rated Output Power (IEC) (European and Australian)
Maximum Output Power (JEITA) (Asian)
Dynamic Power

North American: 135 W + 135 W (2

European and Australian:

THD (Total Harmonic
Distortion) 0.08 % (Power Rated)/ 0.08 % (1 kHz,

Damping Factor 60 (Front, 1 kHz, 8
Input Sensitivity and
Impedance 150 mV/ 50 k (LINE)

Output Level 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)

Signal to Noise Ratio 100 dB (LINE, IHF-A)
Speaker Impedance 4

per channel, 8 ohm loads, 2 channels
driven from 20 Hz to 20 kHz, with a
maximum total harmonic distortion of

0.08 %

2 ch

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

+

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

105 W + 105 W (4
70 W + 70 W (8

110 W + 110 W (2
90 W + 90 W (4
55 W + 55 W (8

1 W)

2.5 mV/ 50 k (PHONO MM)

±10 dB, 10 kHz (TREBLE)
80 dB (PHONO, IHF-A)

~

16

)
)

)

)
)
)

)

General

Power Supply North American: AC 120 V, 60 Hz

Power Consumption North American: 2.1 A

Standby Power
Consumption North American: 0.2 W

Dimensions
(W

H D)

+

+

Weight 7.5 kg

Audio Inputs

Analog Inputs PHONO, CD, TAPE 1, TAPE 2, LINE 1,

Audio Outputs

Analog Outputs TAPE 1, TAPE 2
Speaker Outputs SPEAKERS A

Phones 1
IR Input/Output

Specifications and features are subject to change without
notice.

European: AC 230-240 V, 50 Hz
Others: AC 230-240 V, 50Hz

European: 180 W
Others: 180 W

Others: 0.3 W
435 150 332 mm

+

+

17-1/8" 5-7/8" 13-11/16"

+

+

16.5 lbs.

LINE 2

SPEAKERS B
1/1

Tuner Section

FM

Tuning Frequency
Range North American: 87.5 MHz~ 107.9 MHz

Usable Sensitivity Stereo: 22.2 dBf (75 IHF)
Signal to Noise Ratio Stereo: 67 dB (IHF-A)
THD Stereo: 0.5 % (1 kHz)
Frequency Response 30 Hz~ 15 kHz / ±1 dB

Stereo Separation 40 dB (1 kHz)

AM

Tuning Frequency
Range North American: 530 kHz~1710 kHz

Usable Sensitivity 300 µV
Signal to Noise Ratio 40 dB
THD 0.7 %

Others: 87.5 MHz~ 108.0 MHz
Mono: 15.2 dBf (75 IHF)
Mono: 73 dB (IHF-A)
Mono: 0.3 % (1 kHz)

Others: 522 kHz~ 1611 kHz

SERVICE PROCEDURES

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.

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>

Note: <D>:North American model only
<P>: European model only

<A>: Australian model only

DESCRIPTION

TX-8222

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.

T o reset the TX-8222 to its factor y defaults , turn it on and,
while holding down the VIDEO button, press the
STANDBY/ON button. When the reset is complete,
"Clear" appears on the display and the TX-8222 enter
Standby mode.

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.

Memory backup

4.

The TX-8222 use a battery-less memory backup sys­tem (C704) in order to retain r adio presets and other settings
when it's unplugged or in the case of a power 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.

TX-8222

EXPLODED VIEW

P901

A301

x 21 pcs.

A023

A220

x 2 pcs.

A003

x 2 pcs.

E801

x 4 pcs.

F902

F903

A003

x 2 pcs.

F901

A008

x 4 pcs.

U022

U015

T901

A219

A003

F914

A302

A300

U026

F913

U016

U014

U013

U05

A003

A010
A003

x 2 pcs.

A014

A003

P501B

A009

x 2 pcs.

P704

Q522

A003

x 3 pcs.

A011

x 3 pcs.

A811

x 2 pcs.

Q524

A003

x 2 pcs.

D911

Q523

Q521A

x 4 pcs.

A203

x 2 pcs.

U01

Q521

A003

x 3 pcs.

A003

x 10 pcs.

A003

x 2 pcs.

A018

x 5 pcs.

U02

U012

A002

A201

A607

A202

x 6 pcs.

P715

U023

A001

A003

x 2 pcs.

A350

A210

E801

A005

A028

A007

U017

A006

A205

x 4 pcs.

A003

x 4 pcs.

A206

x 4 pcs.

A003

x 5 pcs.

A355

A214

A352

A351

x 3 pcs.

A212

x 3 pcs.

TX-8222

TX-8222

A

BLOCK DIAGRAM

1

2

FM/AM TUNER

PACK

PHONO

CD

REC

TAPE-1

PLAY
LINE1

DVD

LINE2

AUDIO IN / OUT

REC

TAPE-2

PLAY

Q301
PHONO
EQUALIZER

TUNL

BCDEFGH

ANALOG
SWITCH

Q302

PHONO

CD

RDSCLK

RDSDAT
TU-R
TU-L

SD
STEREO
PLLSDO

PLLCLK

REC1

PLAY1

L1/
DVD

L2

TUNER

REC2

PLAY2

To Audio Selector & Phono

STB
DATA

CL

TMUT

VOLUME

R641

Q481

MOTOR
DRIVE

UP

DOWN

+5.6V

BALANCE

R393

Q401

R415

TREBLE

CPU

R409

BASS

Q402

MUT

Q491
MUTING

+5.6V

Q706

VOLTAGE REGULATOR

Q921

+12V

-12V

D921

+B3

-B3

Q922

D920

D915~8

Q581/582

Q525/6

PROTECT

PRO

TO POWER AMP

+B1

C915

D911

POWER AMP

RELAY

DRIVE

-B1

E

C916

Q591

SPA

SP-A RELAY

RL591

SP-B RELAY

RL592

Q592

SPBTHERM

RELAY
DRIVE

SPEAKERSPOWER AMP

SPEAKER-A

P501

SPEAKER-B

PHONES

P503

Q6380
THERMAL
SENSOR

T901

F901 <D>
F902 <P/A>

PRIMARY

PRI RELAY

RL901

OUTLET

AC_CABLE

THERMAL

3

Q701

MICROPROCESSOR

ST-BY

LEDSTBY

RI

IRIN

IROUT

REMIN

FLDRST

FLDCS
FLDCLK
FLDSDO

K0
K1
K2

K3
KEYINT0
KETINT1
KEYINT2
KEYINT3

REMOTE
CONTROL
SENSOR

DISPLAY / CONTROL

Q7501

FL DISPLAY

Q7502

FL DRIVER

+5V_CPU

RI

IRIN

4

IROUT

5

POW

+5V_CPU

+5V_MPU

FLAC2

TACT KEYS

-VP

FLAC1

Q701

FLAC1
FLAC2

FUSE

SUB
TRANS

T902

Q912

F903

TX-8222

A

BCDEFGH

SCHEMATIC DIAGRAM 1 AUDIO SECTION

NAAF-8886

PHONO

EQUALIZER

1

R301

1K

C301
471K

C302

471K

R302

1K

P301

L

PHONO

R

R315

C317

101K(P/A)

330

2

CD

TAPE

-1

REC

L
R
L

R

P302

TAPE

L

-1

PLAY

R

TAPE

L

-2

REC

R

TAPE

L

-2

PLAY

3

R

P303

L

LINE-1/
DVD

R
L

LINE-2

R

4

NOTE: (D): North American model
(P): European model
(A): Australian model

330

R316

R319

2.2K

R320

2.2K

R323

330

330

R324

R327

2.2K

2.2K
R328

R331
330

330
R332

101K(P/A)

R335
330

330
R336
R339

330

R340

330

R317

R318

C318

101K(P/A)

R321

1M

R322

1M

C321

101K(P/A)

R325
R326

C322

101K(P/A)

R329

R330
C325
101K(P/A)

R333

1M

C326

C327
101K(P/A)

R337

R338

101K(P/A)

C328

R341

R342

1M

C341

223Z

1M

1M

1M

R334

C342
223Z

1M
1M

1M
1M

1M

1M
1M

C343

223Z

5

C303

47/25

R303

56K

R304

56K

R306

220K

C304
47/25

R305
220K

C307
R307

820

C308

C306

C305
152J

100/10

152J

P705B

1
3 4

Q301:B

NJM4558D-X

5
6

C309

682J
R309
470K

100/10

R308

820

R310

470K

C310

682J

8

Q301:A

2

3

4

NJM4558D-X

TC9273CNG-010

1

PHONO

2

CD

3

T1 REC

4

T1 PLAY

5

DVD

6

V REC

7

V PLAY

8

TUNER

9

10

T2 REC

11

T2 PLAY

SEL

12

13

GND

14 15

CL

CLK

R349

P704B

2

1
3 4

7

C313

C311

10/50

182J

R311

39K

R313
100K

R314
100K

R312

39K

C312

182J

1

C314

Q302

VSS VDD

22K

2

10/50

STB

DATA

28
27

26
25

24
23

22
21

20
19

18
17

16

DATA

R350

STB

U02

C345

223Z

C315

[12V]

220/16

C316

220/16

[-12V]

R354

10

C354
22/50

C353

22/50

R353

10

22K

+10S

5.6V

RLGND

MPUGND

12345678910111213141516171819

P701B

TO NADG-8876 (SCH.3)

R351

R352

CLK

10

10

DATA

+12VS

MOTHER

MON-A

MON-B

-12V

+12V

AMUT

STB

VOL_UP

VOL_DN

R391
1K

4
1

-12VA

+12VR

12345678910111213

P702B

R442

10

R441 10

C401

47/25
C391
101K

R393
250K

3
2

8
9

R403
220K

C409

101K
(P/A)

BALANCE

C392
101K

R404
220K

C410

101K

C402
47/25

(P/A)

R392
1K

R402

JL613A

SE1H

SP_A

SP_B

DIRECT

PROTECT

+12VA

TS_GND

POFF2

TO NADG-8876 (SCH.3)

MOTHER

R401

1K

R419

1K

JL613B

TU_L

TU_GND

3.3K

MTR­MTR+

MTRG

TU_R

L3
E
L2
E
R2

E
R3

3
2

C405

R420

6
5

4

Q401:A

8

101K

C403

47/25
Q401:A

NJM2068L-D

3.3K

C404
47/25

C406
101K

Q401:B

NJM2068L-D

C648
223Z

[12V]

[-12V]

C407

R407

47/25

3.3K

1

R415

100K

R405

22K

R417

1K

C421

223J

C422

223J

R418

1K

R406

22K

R408

3.3K

7

C408
47/25

R641

11
12

8

R643

8.2K

Q921

78M12

I

O

3

1

2

C922

G

33/50

C923

G

10/50

1

2

3

I

O

Q922

79M12

C930

223Z

R932
330K

C931
223Z

Q924

2SA965-Y
R934

100(1/2W)

-VP
FLAC1

FLAC2

123

JL716B

3.3K
(1/4W)

TO_NADIS-8887(SCH.2)

1

2

3

TREBLE

8
4
9

7

6

5

39

4 7

C920

223Z

C921

223Z

D922

MTZJ33D

R931

R933

22(1/2W)

1

2

3

BASS

8
4
9

7

6

5

1

R644

C928

100/50

D921

RL1N4003

GP104003E

R411

1.2K

C411

47/25

C433
103J

R409

100K

C434
103J

C412

R412

47/25

1.2K

VOLUME

6

52

8.2K

NAAF-8888

R919
1(1/2W)

D920

RL1N4003
GP104003E

C926
100/50

8

Q402:A

2
3

4

2068L-D
R413
100K

R414
100K

5
6

Q402:B

NJM2068L-D

P641

WS-CLAMP

U023

P642

WS-CLAMP

D918
D3SBA20

1

C918

1000/35

C919

330/35

J903

J102

J101

1

NJM

C423
223Z

7

2

C924

4

334J

3

D924

D924

RL1N4003

GP104003E

C416

220/16

C424
223Z

R435

C925

334J

R924

560(1/2W)

C415

220/16

Q491

RN12
41-A

47K

R491

R492

Q492
RN1241-A

KRA102M

Q493

R436

2.2K

220K

C442

1/50

DIRECT

C941

10/50

D491

1SS133

Q481

TA7291SG

IN2

OUT2

VCC

123456789

C441

VOL_DN

D10XB60H

8200/56

1

C915

P918

D911

2

3

100/16

4

AMUT

BUS

C916

8200/56

1SS133

C982

222J

E591

C971

223Z

C527
47/63

47K

C911

334J/50V

D984

C953

R565
120K

R501

470

R503

27K

C528

47/63

R566
120K

R502

470

R504

27K

MOTOR DRIVE

VSNCOUT1

VREF

GND

C912
334J/50V

D983

1SS133

J593

4.7/50
+

R953

100K

C513
47/25

C514
47/25

VOL_UP

D953

C501
47/50

+

C503
101K

[-55.8V]

+

R563

100K

C502
47/50

+

C504
101K

[-55.8V]

+

R564

100K

IN1

E592

R952

1SS133

D954

MTZJ4.7B

R577
120K

Q501

2SC2240-BL

R505

10

C507

NONE

2SC2240-GR

Q529
2SC2458-GR

R578
120K

Q502

2SC2240-BL

R506

10

C508

NONE

2SC2240-GR

Q530
2SC2458-GR

(1/2W)

2.2

Q505

BL

Q506

BL

R951

D952

R517

1K

[55.8V]

R507

47

R511

5.6K

[-22.8V]

R518

1K

[55.8V]

R508

47

R512

5.6K

[-22.8V]

P916B

S1GND

P914B

JL913B

FLAC2
FLAC1

2.2
(1/2W)

1SS133

R519

1K

[55.8V]

Q503

2SC2240-BL

R509

47

[-0.6V]

R529

R561
270

BL

R520

1K

[55.8V]

Q504

2SC2240-BL

R510

47

[-0.6V]

R530

R562
270

BL

P915B

C511

NONE

(1/2W)

1SS133

C512

NONE

(1/2W)

1SS133

2SA949Y

Q507

56

D511

2SA949Y

Q508

56

D512

R521
82
(1/2W)

[56.3V]

R515

[0.6V]

1.5K

C505

220/25

2SA949Y

[-55.7V]

R525

68

(1/2W)

R522
82

(1/2W)

[56.3V]

R516

1.5K

[0.6V]

C506

220/25

2SA949Y

[-55.7V]

R526

68

(1/2W)

P915A

P914A

JL913A

C597
NONE

+

Q509

C598
NONE

+

Q510

P916A

R523

82

(1/2W)

[1.2V]

[56.3V]

Q513

2SA949Y

C523
020C

R535

C521

18K

10/50
+

C595

R531

NONE

18K

C515

101K

Q515

2SC2229-Y

R527
82

(1/2W)

R524

82

(1/2W)

[1.2V]

[56.3V]

Q514

2SA949Y

C524
020C

R536

C522

18K

10/50
+

C596

R532

NONE

18K

C516

101K

Q516

2SC2229-Y

R528
82

(1/2W)

NAPS-8887

U022

J991

C991

104J
C992
104J

J992

R922

0.47(1/2W)

R921

0.47(1/2W)

Q531

2SC1740S_S

R581

5.6K

R583

3.9K

R585

820

C529

NONE

R587
2K

R589

3.3K
[-1.2V]

Q532

2SC1740S_S

R582

5.6K

R584

3.9K

R586
820

C530

NONE

R588
2K

R590

3.3K
[-1.2V]

R923

5.6(1/2W)

Q517

R591

2SC5171

2.2

(1/4W)

[0.6V]

R539

2.2

(1/2W)

R513

56K

[0V]

R547

R533

0.22(5W)

56K

C509

+

R543

10/50

220

(1/2W)

R541

[-0.6V]

Q533

2.2

2SC1740S_S

(1/2W)

Q519

2SA1930

Q518

R592

2SC5171

2.2

(1/4W)

[0.6V]

R540

2.2

(1/2W)

R514

56K

[0V]

R548

R534

56K

0.22(5W)

C510

R544

+

10/50

220

(1/2W)

R542

[-0.6V]

2.2

Q534

(1/2W)

2SC1740S_S

Q520

2SA1930

POWER TRANSFORMER

T901
NPT-1544D(D)
NPT-1544P(P/A)

18

17
17
16

16

15
15
14

14
13

12

12

11

11

10

10

9

9

8

8

3

5

THERMAL

7

Q521

2SC5197

R579

P597A
NONE

Q523
2SA1940

Q522

2SC5197

P598A
NONE

Q524

2SA1940

FUSE

[57.6V]

2SC2229-Y

R545

100

22K

P511

2

ID+

1

ID-

ID ADJ

P597B
NONE

R549

3.3K

[-57.6V]

[57.6V]

Q528
2SC2229-Y

R580

R546

100

22K

P512

2

ID+

1

ID-

ID ADJ

P598B
NONE

R550

3.3K

[-57.6V]

MPUGND

3

7

Q527

R551

33K

-O

J691
NONE

L501

R567

22

R569

22

R553
47K

C517

R555

473J

8.2

(1W)
C519

104J

R552

33K

-O

J692
NONE

L502

R568

22

R570

22

R554
47K

C518

R556

473J

8.2

(1W)
C520

104J

R571

33K

Q582

2SC2240

C581

100/16

R598

390(1W)

TO NAETC-8882(SCH.-2)

PRIMARY

TO NAPS-8880 (SCH.-4)

2.2

R593

(1/2W)

R572

Q581

2SC2240

MTZJ5.1B

JL711B

22K

HP

R573

R594
(1/2W)

R574

47K

D571

321

10K

2.2

R599
390(1W)

C582

223Z

R575

220K

Q583

2SA970

SPEAKERS

P501

AB

LL

91068245

C532

102J

RL592

4
3

C592

103J

10
(1/2W)

Q592

DTC123JS

PROTECT

7

R595

R

5
2
16

C583

1/50

R

3

1

C531
102J

C534

102J

C533

102J

RL591

4
3
6 1

D591 D592

C591
103J

Q591

DTC123JS

SP_A

C536

102J

C535

102J

5
2

SP_B

RLGND

TX-8222

A

SCHEMATIC DIAGRAM 1-2
Power amplifier section

2SA949Y

1

R565

120K

R577
120K

R517

1K

[55.8V]

Q501

2SC2240-BL

R501

C501
47/50

470

+

R503

27K

2

C503
101K

C513
47/25

+

[-55.8V]

R563

100K

R505

10

R507

47

R511

5.6K

[-22.8V]

Q505

2SC2240-GR

BL

Q529

2SC2458-GR

3

R519

1K

[55.8V]

Q503

2SC2240-BL

R509

47

[-0.6V]

R529

R561

270

BL

Q507

(1/2W)

56

D511

1SS133

R521
82

(1/2W)
[56.3V]

[0.6V]

Q509

2SA949Y

[-55.7V]

R525

68

(1/2W)

R515

1.5K

C505

220/25

+

BCD

Q521

2SC5197

R579

100

ID+
ID-

Q523

2SA1940

[57.6V]

P511

[-57.6V]

R545

2
1

R549

3.3K

Q527

2SC2229-Y

22K

ID ADJ

C517

473J

-O

R553

47K

C519

L501

R567

R569

R555

8.2

(1W)

104J

R551

33K

22

22

R523

82

(1/2W)

[1.2V]

[56.3V]

Q513

2SA949Y

C523
020C

R535

C521

18K

10/50
+

R531

18K

C515

101K

Q515

2SC2229-Y

R527
82

(1/2W)

Q531

2SC1740S_S

R581

5.6K

R583

3.9K

R585

820

R587
2K

R589

3.3K
[-1.2V]

R591

2.2

(1/4W)

[0.6V]

R513

56K

R533

56K

R543
220

(1/2W)

[-0.6V]

Q533

2SC1740S_S

Q517

2SC5171

R539

2.2

(1/2W)

[0V]

R547

0.22(5W)

C509

+

10/50

R541

2.2

(1/2W)

Q519

2SA1930

2SA949Y

Q508

R520

R518

1K

1K

R566

120K

R578

120K

[55.8V]

[55.8V]

Q502

47/50

+

[-55.8V]

R564

100K

2SC2240-BL

R506

10

Q506

2SC2240-GR

BL

R502

C502

470

4

R504

27K

C504
101K

C514

47/25

+

5

2SC2458-GR

R508

47

R512

5.6K

[-22.8V]

Q530

Q504

2SC2240-BL

R510

47

[-0.6V]

R530

R562

270

BL

(1/2W)

56

D512

1SS133

R522
82

(1/2W)
[56.3V]

[0.6V]

C506

220/25

Q510

2SA949Y

[-55.7V]

R526

68

(1/2W)

R516

1.5K

+

R524

82

(1/2W)

[56.3V]

Q514

2SA949Y

C524
020C

R536

C522
10/50

+

R532

18K

C516

101K

Q516

2SC2229-Y

R528
82

(1/2W)

[1.2V]

18K

Q532

2SC1740S_S

R582

5.6K

R584

3.9K

R586

820

R588

2K

R590

3.3K
[-1.2V]

R592

2.2

(1/4W)

R514

R534

R544
220

(1/2W)

Q534

56K

2SC5171

[0.6V]

R540

2.2

(1/2W)

R548

56K

0.22(5W)

C510

+

10/50

R542

[-0.6V]

(1/2W)

2SC1740S_S

2SA1930

Q518

[0V]

2.2

Q520

Q522

2SC5197

R580

100

P512

ID+
ID-

Q524

2SA1940

[57.6V]

R546

2
1

R550

3.3K

[-57.6V]

Q528

2SC2229-Y

22K

ID ADJ

C518

473J

-O

R554

47K

R552

L502

R568

R570

22

R556

8.2

(1W)

C520

104J

33K

22

TX-8222

A

SCHEMATIC DIAGRAM 2

NADIS-8877

1

2

3

4

BCDEFGH

DISPLAY SECTION

Q852

16-BT-128GNYK

F212F225P356P347P338P329P3110P3011P2912P2813P2714P2615P2516P2417P2318P2219P2120P2021P1922P1823P1724P1625P1526P1427P1328P1229P1130P1031P932P833P734P635P536P437P338P239P14016G4115G4214G4313G4412G4511G4610G479G488G497G506G515G524G533G542G551G58F1159F12

1

C870

223Z

R885

R886

R884
100K

33

34

35

36

37

38

39

40

41

42

45

C864

Q853

223Z

2SC2712-GR

49

SEG2

50

SEG1

51

SEG0

52

VCC2

53

DIG15/SEG39

54

DIG14/SEG38

55

DIG13/SEG37

56

DIG12/SEG36

57

DIG11

58

DIG10

59

DIG9

60

DIG8

61

DIG7

62

DIG6

63

DIG5

DIG4

64

DIG032DIG023DIG014DIG005_RESET6_CS7SCK8SDATA9P110P011VCC112XOUT13XIN14VSS

1

C860
C861

C862

C863 101J

101J

SEG646SEG547SEG448SEG3

101J
101J

SEG943SEG844SEG7

SEG10

Q851

M66005­0001AHP

SEG12

SEG11

R879
R880

R881
R882

27K

SEG14

SEG13

R883

C858

SEG15

SEG19

101J

3.3K

3.3K
220

220

SEG17

SEG16

SEG20
SEG21
SEG22
SEG23
SEG24
SEG25
SEG26

SEG27
SEG28
SEG29
SEG30
SEG31

SEG34

SEG32
SEG33

SEG35

15

C857

SEG18

VP

16

+

100/16

FLDRST
FLDCS
FLDCLK
FLDSDO

32
31
30
29
28
27
26
25
24
23
22
21
20
19

18

17

104Z

C856

C868

223Z

D851

223Z

C854

C869

223Z

220
220

C866

+
C865
33/50

MTZJ8.2B

C853

223Z

C867

223Z

100/16

L852

022K

U012

L857

R887

100

1
2
3

470M

102J

C871

JL716B

TO NAAF-8886(SCH.-1)

U851

5

100/16

1K

4
3
2
1

+

C873

R888

+5VDIS

MPUGND

+5VCPU

MPUGND

REMIN

KEYINT0
KEYINT1
KEYINT2
KEYINT3
FLDRST

FLDCS
FLDCLK
FLDSDO

LEDSTBY
LEDPURE

IRIN

R891

IROUT

2.2K

D854

D853

SLI-343URC-TE7

1
2
3
4
5
6
7

KEY0

8

KEY1

9

KEY2

10

KEY3

11
12
13
14
15
16
17
18
19
20
21
22
23
24

SIR-34ST3F

P715B

TO NADG-8876(SCH.-3)

STAND

BY/ON

S858

TAPE-2

ENTER

GHI

560

R878

R864

560

R871

R857

560

560

S851

S867

DIRECT

S875

S859

R876

330

SP-B

S880

R855

330

DVD

S856

R862

330

S864

5

0/10 */

ABC

S872

R869

330

S865

S873

CATE-

S881

S857

VIDEO

GORY

DEF

SP-A

R877

470

R863

470

R870

S882

R856

470

470

S866

S874

DISPLAY

TAPE-1

TUNING

JKL

820

R865

820

R851

R872

R858
820

S868

820

S852

TUNING

UP

S860

FM/AM

FM MUTE

/MODE

MNO

S876

R852

1.2K

R859

1.2K

R866

1.2K

S853

TUNING

S861

XM/

S869

R873

1.2K

S877

DOWN

SIRIUS

MEMORY

PQR

R867

2.2K

R853

2.2K

R874

R860

2.2K

2.2K

S862

STU

S878

PHONO

R854

3.9K

R892

R875

R861

3.9K

3.9K

S879

3.9K

CD

S863

VWX

R889

12K

S883

YZ-

NAETC-8882

C875

L853

102J

220M

1

L854

2
3

JL711A

220M

L855
220M

104Z

C876

FROM NAAF-8886(SCH.-1)

C874

102J

P504

3
2
1

P503

PHONES

U017

TX-8222

A

SCHEMATIC DIAGRAM 3

NADG-8876

1

C716

13
12
11
10

TUR

9
8

TUL

7
6

+9V_TU

5

TO TUNER PACK

4
3

2

2
1

P704A

P707

RI

P706

IRIN

3

IROUT

4

101J

R850

10K

C717

3.3/50
(VX)

C719
104Z

+12VA

D705

1SS355

D706

D707

1SS355

R710

100/16

C718

(VR)

C728
104Z

3
2
1

R709

100

23
22
21

3
2
1

1SS355

10(1/2W)

P708

104Z

C729

R722

47K
R721
47K

BCDEFGH

MICROPROCESSOR SECTION

U01

RDSSIG
RDSDAT

J701/J702:(P/A)

J701
J702

TUNED
STEREO
PLLSDA
PLLCLK

SYSIN

IRIN

IROUT

Q701

S-812C56
AUA-C3K

2

I

1

C701

104Z

LEDZONE2

LEDPURE

LEDSTBY

FLDSDO
FLDCLK
FLDCS
FLDRST
KEYINT3
KEYINT2
KEYINT1
KEYINT0
KEY3
KEY2
KEY1

KEY0

(A)(P)(D)

+

R719

33K

R720

Q603

R671

10K

R674

10K

R677

R675

R676

0

0

78

79

P11/D980P10/D8

P12/D10

P04/AN04/D4
P03/AN03/D3
P02/AN02/D2
P01/AN01/D1
P00/AN00/D0
P107/AN7/KI3
P106/AN6/KI2
P105/AN5/KI1
P104/AN4/KI0
P103/AN3
P102/AN2
P101/AN1
AVSS
P100/AN0
Vref
AVcc
P97/ADTRG/SIN4

1

2

3

220

220

R602

R601

10K
10K

VSWB

VSWA

RN2402

TUNED

STEREO

220

220

R670

0

76

77

P14/D12

P13/D11

P07/AN07/D7
P06/AN06/D6
P05/AN05/D5

4

5

220

R669

D703

1SS355

D702

1SS355

D713

D701

L701

1SS355

470M

3

O

G

+

+

100/16

C703

C702

102K

102K

C613

C614

100/16

C704

DX-5R5L224

102K

C616 102K

C615 102K

C617

R701

+

2.7K

R689

1K

102K

C618

C709

2.7K

R691

+

100/16

102K

C619

UDZS5.1B

D604

R679
R680
R681
R682

R683
R684
R685
R686

R687
R688
R690
R692

R694

2.7K

102K

C620

R693

2.7K

R695

R678

C621

R696

+5VCPU

+5VTU

+5VMPU

220K

47
47
47
47
47

4.7K

4.7K

4.7K

4.7K

4.7K

4.7K

4.7K

4.7K

104Z

47K

100

10K

R672

81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99

R673

C622104Z

R609

R610

D601

1SS355

+

C623

4.7/50

Q602

RN1404

C601 104Z

R612

47K

R613

1M

R717

R719*

10K

D603

1SS355

REMIN

INT1

BAND

SYSIN

SYSOUT

47K

R667

73

70

71

72

74

75

P17/D15/INT5

P16/D14/INT4

P15/D13/INT3

P20/AN20/A0(/D0/-)

P22/AN22/A2(/D2/D1)

P21/AN21/A1(/D1/D0)

M30624FGPFP

P96/ANEX1/SOUT4

P95/ANEX0/CLK4

P91/TB1IN/SIN3

P90/TB0IN/CLK3

BYTE9CNVSS10P87/XCIN11P86/XCOUT12RESET13XOUT14VSS15XIN16VCC117P85/NMI18P84/INT219P83/INT120P82/INT021P81/TA4IN/U22P80/TA4OUT/U

7

8

6

220

R608

RDSDAT

CNVSS

C609

10K

R714

C610

R715

C611
C612

R720*

INT2

INT3

VOLH

PROTECT

THERMAL

220

220

R664 220

R665

R666

66

67

68

69

65

P26/AN26/A6(/D6/D5)

P25/AN25/A5(/D5/D4)

P24/AN24/A4(/D4/D3)

P23/AN23/A3(/D3/D2)

P94/DA1/TB4IN

P93/DA0/TB3IN

P92/TB2IN/SOUT3

C602

(P)

C603

X601

6.000MHz

RESET

4.7K
104Z

0
104Z

104Z

104Z

SEC1H

0

R700

47

R663

64

63

VSS

Q601

P27/AN27/A7(/D7/D6)

P76/TA3OUT25P75/TA2IN/W26P74/TA2OUT/W

R61547K

10K

104Z

R614

104Z

POFF

33K56K
56K33K

SYSIN

104Z

C607

R662 0

R661 0

R660 0

58

59

60

61

62

VCC2

P34/A12

P33/A11

P32/A10

P31/A09

P30/A8(/-/D7)

P44/CS0
P45/CS1
P46/CS2
P47/CS3

P73/CTS2/RTS2/TA1IN/V

P72/CLK2/TA1OUT/V

P71/RXD2/SCL2/TA0IN/TB5IN

P70/TXD2/SDA2/TA0OUT

P77/TA3IN

23

R61647K

R618

R619220

R620

220

220

1SS355
D602

XMCOMSEL

SELCLK

XMDACRST

470/10

AMUT

C710

1M

APOWER

VOLOUT2

VOLOUT1

R729

R655

220

0

R656

R657

R658

0

1K

53

54

55

56

57

P41/A17

P40/A16

P37/A15

P36/A14

P35/A13

P50/WRL/WR

P51/WRH/BHE

P52/RD
P53/BCLK
P54/HLDA
P55/HOLD

P56/ALE

P57/RDY/CLKOUT

P60/CTS0/RTS0

P61/CLK0
P62/RXD0/SCL0
P63/TXD0/SDA0

P64/CTS1/RTS1/CTS0/CLKS1

P65/CLK1
P66/RXD1/SCL1
P67/TXD1/SDA1

27

28

24

R622220

R621

R625220

R624

220

220

R699

220(P)

SELDAT

SELSTB

TUXMSELA

RDSSIG

TUXMSELB

2

C708

DIRECT

SPRLB

R654220

C606

104Z

51

52

50
49
48

P43/A19

P42/A18

47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31

29

30

47

R697

R626

47K

R629

SIRIUSRX

SIRIUSTX

10K

474K

R650

R646
R645
R644
R643

R642
R641
R640
R639
R638
R637
R636
R635
R634

R633

47

Q705

Q703

RN1404

R653
10K
R652

10K

FCE

R630

RN2402

0

0
47
47

0

FEPM

0

0

0

47

220
47
47
47

47

10K

R704

R705

2.2K

+

C706

10/50

10K

R651

10K

10K

R647

R631

TO FLASH WRITER

P705

10K

SPRLA

R648

R649

10K

10K

XMSRRXD
XMSRTXD

RESET

1

CNVSS

2

FRXD

3

FCLK

4

+5VMPU

5

FBUSY

6

FTXD

7

MPUGND

8

APOWER

9

PLLSDA
PLLCLK

C605

C604

101J

101J

XMRST

FBUSY

FCLK
FRXD
FTXD

SRRST

560(1W) (D)

R734

270(1W) (P/A)

D704

1SS355

Q706

78M56

R70210K

L702
022K

C711 104Z

1

I

2

G

O

3

C712

100/16

TU_R

13

TU-GND

12

TU_L

11

TS_GND

10

DIRECT

9

POFF2

8

SEC1H

7

SPRLB

6

SPRLA

5

PROTECT

4

+12VA

3
2

-12VA

1

P702A
1
2
3
4

P701A
5

TO NAAF-8886 (SCH.-1)

6
7
8
9

10
11
12
13
14
15
16
17
18
19

R733

10(1W)

5.6VM

RLGND

MPUGND

SELCLK
SELDAT

+12VS
VSWB
VSWA

AMUT

SELSTB
VOLOUT2
VOLOUT1

+12VR

+

MPUGND

1

APOWER

2

+10S

3

POFF

4
+12VS
RLGND

JL911B

5

6

TO NAPS-8880 (SCH.-4)

NAETC-8878

MPUGND

D708

1SS355

+5VTU

THERMAL

1

2

3

JL703B

JL703A

MPUGND

1

+5VTU

2

THERMAL

3

2

O

U08

3

V

Q855

G

LM61CIZ

1

5

KEY3

KEY2

KEY1

IROUT

IRIN

1

LEDZONE2

LEDPURE

P715A

FLDCLK

LEDSTBY

FLDCS

FLDSDO

TO DISPLAY(SCH.-2)

KEYINT3

FLDRST

KEYINT2

KEYINT1

KEYINT0

KEY0

REMIN

MPUGND

+5VCPU

MPUGND

+5VDIS
24232221201918171615141312111098765432

TX-8222

A

SCHEMATIC DIAGRAM 4

POWER SUPPLY SECTION

1

NAPS-8880

U015

2

AC_CABLE

(D): D model: North American model 120V 60Hz
(P): P model: European model 230~240V 50Hz
(A): A model: Australian model 230~240V 50Hz

3

4

5

P901A

1
2

AC-H

AC-G

NPT-1520JQD model
NPT-1519GQP/A model

BCDEFGH

T902

C991

104Z
D991

1SS355

D992

1SS355

P991

A model

5

T902

3

4

678

C902
104Z

POWER TRANSFORMER

U016

T901

NPT-1544D(D)
NPT-1544P(P/A)

5A-UL/T-233(D)

F903

2.5A-SE-EAK(P/A)

F901

P model

103M/275

C912

1

4

1

2

RL902

150(1/2W)

+

C903

+

C904

R915

3 2

D912

1SS355

2200/35

100/35

R909

100K

9

1SS355

D902

1SS355

1SS355

D904

1SS355

1SS355

1SS355

1SS355

1SS355

D901

D903

D905

D906

D908

D909

+

4.7/50

C906

D model

P910

D914

UDZ5.1B

J907

Q912

KTC3199-GR

D913

1SS355

R913

1K

R914
100K

5A-UL/T-237(D)

J904

J918

F902

2.5A-SE-EAK
(P/A)

MPUGND

POWER

+10S
POFF
+12VS
RLGND

J930

1

P912A

P912B

P913B

TO POWER TRANSFORMER T901

1

P911B

P911A

1
2
3
4

JL911A

5
6

TO MAIN NADG-8876

(SCH.-3)

1

1

1

NAETC-8881

PRIMARY

TO NAPS-8881

TO POWER TRANSFORMER

18
17

3

16
15

14
13

5

12
11

THERMAL FUSE

7

10

9

8

THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
THAT THE FUSE USED IS SLOW 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
E LENT. POUR UNE PROTECTION PERMANENTE,N'UTILISER

QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST
INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.

NOTE

.

THE COMPONENTS

REPLACE ONLY

.

VOLTAGE VOLTMETER) IS

.

ELECTROLYTIC CAPACITORS (

.

ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.

EX) 030-3pF 330-33pF 331-330pF 333-0.033uF

.

ALL RESISTORS ARE IN OHMS 1/4WATTS UNLESS OTHERWISE NOTED.

.

THE THICK LINES ON PC BOARD ARE THE PRINTING SIDE OF THE PARTS.

EX) PRINTING SIDE

.

CIRCUIT IS SUBJECT TO CHANGE FOR IMPROVEMENT.

IDENTIFIED

WITH PART

(MEASURED WITH

CAUTION

FOR CONTINUED PROTECTION
AGAINST FIRE HAZARD, REPLACE
ONLY WITH FUSE OF SAME TYPE

VA

AND RATING INDICATED.

ATTENTION

AFIN D'ASSURER UNE PROTECTION
PERMANENTE CONTRE LES RISQUES
D'INCENDIE, REMPLACER UNIQUEMENT

VA

PAR UN FUSIBLE DE MEME TYPE
ET CALIBRATION COMME INDIQUE.

BY MARK

NUMBER SPECIFIED.

ARE CRITICAL FOR

ARE IN F/WV.

)

DC VOLTAGE.(NO INPUT SIGNAL)

u

SAFETY

TX-8222

WIRING VIEW

1

2

3

A

AC IN

P910

U015

P911A

TRANSFORMER TERMINAL

PC BOARD (NAETC-8881)

P901A

T902

P913B

U016

T901 NPT-1543*

BCDEFGH

PRIMARY CIRCUIT

P911B

PC BOARD
(NAPS-8880)

SCH.4

P912A

P913A

JL911A

P912B

SCH.4

FUSE TERMINAL

PC BOARD (NAPS-8889)

U024

D912

SCH.1

JL917B

JL918A

P512

R588

P914B

P916B

R587

JL918B

P501

P915B

P303

JL261B

MAIN CIRCUIT
PC BOARD
(NAAF-8886)

U02

SCH.1

P302

P301

P702B

P701B

SCH.1

U023

P706

P707

P704A

SCH.3

P702A

P701A

P212B

P211B

JL911B

U01

MICROPROCESSOR PC BOARD

(NADG-8876)

P715A

P705A

JL703B

U05

FM/AM TUNER

PACK

JL703A

THERMAL DETECTOR
PC BOARD
(NAETC-8878)

SCH.3

U013

P916A
WHT

JL913A

U022

4

P914A

RED
P915A
BLK

TRANSFORMER TERMINAL

PC BOARD (NAPS-8887)

JL917A

SCH.1

P511

JL711B

JL711A

P503

JL913B

P504

JL716B

JL613A

JL613B

R641

VOLUME PC BOARD

(NAAF-8888)

U017

HEADPHONE TERMINAL
PC BOARD
(NAETC-8882)

SCH.2

To Chassis

DISPLAY CIRCUIT
PC BOARD(N

ADIS-8877)

Q852

U012

P715B

SCH.2

5

JL716B

TX-8222

A

PRINTED CIRCUIT BOARD VIEW 1

1

2

Reversal letter:

:Soldering side parts

C719

BCDEFGH

COMPONENT SIDE

Reversal letter:

:Soldering side parts

D901

COMPONENT SIDE

3

4

5

SOLDERING SIDE

SOLDERING SIDE

U01

MICROPROCESSOR PC BOARD (NADG-8876)

U015

PRIMARY CIRCUIT PC BOARD (NAPS-8880)