Onkyo TX-8222 User manual

TX-8222
SERVICE MANUAL
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
FM
AM
General
Audio Inputs
Audio Outputs
Specificationsandfeaturesaresubjecttochangewithout
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)
90W at 4 ohms, 1 kHz, 2 ch driven
Dynamic Power
North American: 135W + 135W (2 )
105W + 105W (4 )
70W + 70W (8 )
European and Australian:
110W + 110W (2 )
90W + 90W (4 )
55W + 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 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)
±10 dB, 10 kHz (TREBLE)
Signal to Noise Ratio 100 dB (LINE, IHF-A)
80 dB (PHONO, IHF-A)
Speaker Impedance 4 16
Tuning Frequency
Range NorthAmerican: 87.5 MHz~107.9 MHz
Others: 87.5 MHz~ 108.0 MHz
Usable Sensitivity 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 Frequency
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:AC120V, 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
(W H D)
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
Speaker Outputs SPEAKERS A
SPEAKERS B
Phones 1
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.
4.
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 actory 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.
Memory backup
The TX-8222 use a battery-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 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.
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
EXPLODEDVIEW
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
A003
A003A302
A300
A023
A005
E801 A007
A352
A214
A355
F913
F914
F902
A028
P501B
A219

TX-8222
BLOCK DIAGRAM
UP DOWN
STB
DATA
CL
TUNL
FLAC2
FLAC1
-VP
MUT
REMIN
FLDRST
FLDCS
FLDCLK
FLDSDO
TMUT
PLLCLK
PLLSDO
STEREO
SD
RDSCLK
RDSDAT
POW
+5.6V
+5V_MPU
+5V_CPU
+5V_CPU
+12V
-12V
TU-L
TU-R
RI
IRIN
IROUT
K0
K1
K2
KEYINT0
KETINT1
KEYINT2
K3
KEYINT3
LEDSTBY
+5.6V
VOLTA
G
PHONO
EQUALIZER
Q301
PHONO
REC
PLAY
TAPE-1
CD
PLAY1
L1/
DVD
LINE1
DVD
TUNER
PLAY2
REC2
REC
PLAY
TAPE-2
LINE2
AUDIO IN / OUT
MOTOR
DRIVE
Q481
DISPLAY / CONTROL
CPU
VOLUME
MICROPROCESSOR
Q701
FL DRIVER
Q7502
FL DISPLAY
Q7501
PACK
FM/AM TUNER
TACT KEYS
To Audio Selector & Phono
Q302
PHONO
CD
REC1
ANALOG
SWITCH
BASS
TREBLE
Q9
Q92
2
D921
R641
Q491
MUTING
R393
BALANCE
D920
REMOTE
CONTROL
SENSOR
RI
IRIN
IROUT
ST-BY
Q402
R409
Q401
R415
Q706
Q701
L2
A
1
2
3
4
5
BCD

TX-8222
BLOCK DIAGRAM
SPA
SPBTHERM
PRO
-B1
E
+B1
+B3
-B3
+12V
-
12V
FLAC1
FLAC2
Q525/6
Q581/582
PROTECT
TO POWER AMP
PRIMARY
THERMAL
SENSOR
Q6380
VOLTAGE REGULATOR
SPEAKERSPOWER AMP
Q591
RELAY
DRIVE
Q592
RELAY
DRIVE
POWER AMP
RL901
PRI RELAY
F903
OUTLET AC_CABLE
P501
SPEAKER-A
SPEAKER-B
RL591
SP-A RELAY
RL592
SP-B RELAY
P503
PHONES
C916
D911
Q921
Q922
D921
F901 <D>
F902 <P/A>
Q912
D915~8
D920
T902
SUB
TRANS
C915
THERMAL FUSE
T901
A
1
2
3
4
5
BCD

TX-8222
SCHEMATIC DIAGRAM 1 AUDIO SECTION
DATA
CLK
POFF2
TU_L TU_R
SE1H
PROTECT
STB
SP_A SP_B
DIRECT
+12VA
5.6V
-12VA
VOL_DN
VOL_UP
STB
AMUT
DATA
MON-A
+12VS
MON-B
+12VR
CLK
+10S
FLAC1
FLAC2
-VP
L2
R2
E
R3
E
E
L3
MTR+
MTR-
MTRG
R
L
R
L
TREBLE
BASS
BALANCE
PHONO
EQUALIZER
SEL
STB
DATA
CL
GND
T2 REC
T2 PLAY
VSS VDD
PHONO
CD
T1 PLAY
DVD
V REC
V PLAY
TUNER
PHONO
L
R
R
L
R
L
CD
-1
REC
TAPE
PLAY
-1
TAPE
-2
TAPE
REC
-2
PLAY
TAPE
R
L
R
L
R
L
T1 REC
+12V
-12V
TU_GND
TS_GND
LINE-1/
DVD
RLGND
MPUGND
NAAF-8886
[12V]
[-12V]
TO NADG-8876 (SCH.3)
MOTHER
TO NADG-8876 (SCH.3)
MOTHER
[12V]
[-12V]
VOLUM
E
NAAF-88
8
R413
100K
R311
39K R313
100K
R314
100K
R417
1K
R418
1K
C342
223Z
R335
330
R336
330 R337 1M
R338 1M
R302
1K
R349
22K
R301
1K
C313
10/50
R304
56K
R303
56K
R305
220K
R306
220K
C307 100/10
R312
39K
C312
182J
Q301:B
NJM4558D-X
6
57
Q301:A
NJM4558D-X
3
2
8
1
4
C314
10/50
C345
223Z
R350
22K
C308
100/10
R318 1M
R317 1M
R316
330
R322
1M
R321
1M
R319
2.2K
R324
330 R326 1M
R325 1M
R323
330
R330 1M
R329 1M
R327
2.2K
R328
2.2K
R331
330
R332
330 R333 1M
R334
1M
R407
3.3K
C311
182J
C301
471K
C302
471K
C309682J
C310
682J
R307
820 R308
820
R309
470K
R310
470K
R401
1K
C421
223J
C422
223J
R419
3.3K
R420
3.3K
C403
47/25
C407
47/25
R404
220K
R405
22K
R406
22K
C392
101K
C391
101K
C404
47/25
R391
1K
C928
100/50
C931
223Z
Q302
TC9273CNG-010
1
2
3
4
5
6
7
8
9
10
11
12
13
14 15
16
17
18
19
20
21
22
23
24
25
26
27
28
R442 10
C401
47/25
R441 10
R411
1.2K
C402
47/25
R402
1K
R408
3.3K
C408
47/25
R392
1K
3
2
84
Q401:B
NJM2068L-D
6
57
Q401:A
NJM2068L-D
3
2
8
1
4
R403
220K
P301
P302
R414
100K
R315
330
R320
2.2K C341
223Z
C433
103J
C434
103J
C412
47/25 R412
1.2K
C411
47/25
C343
223Z
R339
R340 R341 1M
R342 1M
P303
D921
RL1N4003
GP104003E
D922
MTZJ33D
Q924
2SA965-Y
C9
1
330
C91
100
0
C305
152J
C306
152J
C303
47/25
C304
47/25
C930
223Z
R932
330K
R934
100(1/2W)
C315
220/16
C316
220/16 R352
10
R351
10
R353
10
R354
10
C353
22/50
C354
22/50
C317 101K(P/A)
C318101K(P/A)
C321
101K(P/A)
C322
101K(P/A)
C325
101K(P/A)
C326
101K(P/A)
C327
101K(P/A)
C328
101K(P/A)
C405
101K
C406
101K
C409
101K
(P/A)
C410
101K
(P/A)
R931
3.3K
(1/4W)
R933
22(1/2W)
Q922
79M12
3
O2I
1G
C923
10/50
C922
33/50 C921
223Z
C920
223Z
C926
100/50
J903
JL716B
TO_NADIS-8887(SCH.2)
1 2 3
JL613A
P705B
1
3 4
2P704B 1
3 4
2
R415
100K
2
65
3
9
4
8
1
7
R393
250K
4
19
28
3R409
100K
8
4
9
5
3
6
2
1
7
Q921
78M12
3
O2
G1I
R919
1(1/2W)
D
9
D
3
Q
4
NJ
M
6
5
D920
RL1N4003
GP104003E
P701B
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19
P702B
1 2 3 4 5 6 7 8 9 10 11 12 13
R644
8.2K
R643
8.2K
C648
223Z
P
6
WS-CL
A
P
6
WS-CL
A
JL613B
R641
4 7
81
12 52
11 6
39
U02
U0
2
Q401:A
NOTE: (D): North American model
(P): European model
(A): Australian model
330
330
LINE-2
A
1
2
3
4
5
BCD

TX-8222
SCHEMATIC DIAGRAM 1 AUDIO SECTION
PROTECT
VOL_UP
SP_A
SP_B
DIRECT
VOL_DN
AMUT
S1GND
FLAC2
FLAC1
VS NC OUT1 VREF IN1 GND
MOTOR DRIVE
P918
BUS
RLGND
SPEAKERS
R
LL
R
AB
IN2 OUT2 VCC
NAAF-8886
MPUGND
HP
8200/56
ID+
ID-
2SC5197
2SA1940
[57.6V]
[-57.6V]
[1.2V]
[-1.2V]
[0.6V]
[-0.6V]
[0V]
[-0.6V]
[-55.8V]
[-22.8V]
[55.8V] [55.8V]
[56.3V]
[56.3V]
[-55.7V]
[0.6V]
ID ADJ
-O
ID+
ID-
2SC5197
2SA1940
[57.6V]
[-57.6V]
[1.2V]
[-1.2V]
[0.6V]
[-0.6V]
[0V]
[-0.6V]
[-55.8V]
[-22.8V]
[55.8V] [55.8V]
[56.3V]
[56.3V]
[-55.7V]
[0.6V]
ID ADJ
-O
UME
-
8888 NAPS-8887
THERMAL FUSE
POWER TRANSFORMER
PRIMARY
TO NAPS-8880 (SCH.-4)
R
413
1
00K
C424
223Z
R575
220K
R435
220K
C416
220/16
C971
223Z
R951
(1/2W)
2.2
R491 47K
R492
47K
R436
2.2K
D952
1SS133
C423
223Z
P916B
Q492
RN1241-A Q592
DTC123JS
Q591
DTC123JS R595
10
(1/2W)
R599
390(1W)
R598
390(1W)
Q402:A
NJM
2068L-D
3
2
8
1
4
Q491
RN12
41-A
D983
C591
103J C592
103J
D591 D592
RL5925
2
16
3
4
P501
7 9
10
6 8 2 4 5
1
3
R
414
00K
P915B
R952 (1/2W)
2.2
J593
P914B
C953 4.7/50
+
D954
MTZJ4.7B
Q493
KRA102M
D491
1SS133
C941
10/50
R953100K
J101
C925
334J
C919
330/35
C918
1000/35
C912
334J/50V
C911
334J/50V
C441
100/16
R924
560(1/2W)
C415
220/16
C527
47/63
C528
J102
C534
102J
C532
102J
C531
102J
C533
102J
C535
102J
C536
102J
E591
E592
D953
1SS133
R594
(1/2W)
2.2
R573
10K
R572
22K
C582
223Z Q583
2SA970
R574
47K
R593
(1/2W)
2.2
R571
33K
Q581
2SC2240
Q582
2SC2240
JL913B
D571
MTZJ5.1B C583
1/50
C581
100/16
Q481
TA7291SG
1 2 3 4 5 6 7 8 9
RL591
4
3
6 1
2
5
6
5
0
J
903
JL711B
TO NAETC-8882(SCH.-2)
3 2 1
C915
C916
C924
334J
D911
D10XB60H
1
3
4
2
9
2
W)
D918
D3SBA20
1
3
4
2
D924
GP104003E
RL1N4003
D984
C982
222J
Q402:B
NJM2068L-D
6
57
4
003
4
003E
C442
1/50
R501
470
R565
120K
C501
47/50
+
R507
47 R509 47
C519
104J
R519
1K
R517
1K R521
(1/2W)
82
R577
120K
R563
100K
D511
1SS133
R561
270
C503
101K
R503
27K
Q507
2SA949Y
Q531
2SC1740S_S
R581
5.6K
R583
3.9K
R587
2K
R589
3.3K
Q533
2SC1740S_S
R567
22
C509
10/50
+
R579
100
C511
NONE
Q503
2SC2240-BL
R531
18K
R525
(1/2W)
68 R527
(1/2W)
82
C521
10/50
+
Q513
2SA949Y
Q515
2SC2229-Y
R547
0.22(5W)
C515
101K
R515
1.5K
C505
220/25
+
C597
NONE
C523
020C
Q509
2SA949Y
R529
(1/2W)
56
C507
NONE R569
22
R545
22K
L501
J691
NONE
R555
(1W)
8.2
C517
473J
P597A
NONE P597B NONE
C513
47/25
+
P511
1
2
R535
18K
C595
NONE C529
NONE
R513
56K
R533
56K
R543
(1/2W)
220
R541
(1/2W)
2.2
R539
(1/2W)
2.2
R591
(1/4W)
2.2
Q501
2SC2240-BL
R505
10
Q529
BL
2SC2458-GR
R549
3.3K
R585
820
Q519
2SA1930
Q517
2SC5171
Q521
Q523
R511
5.6K
Q505
BL
2SC2240-GR
R523
(1/2W)
82
R553
47K
Q527
2SC2229-Y R551
33K
R502
470
R566
120K
C502
47/50
+
R508
47 R510 47
C520
104J
R520
1K
R518
1K R522
(1/2W)
82
R578
120K
R564
100K
D512
1SS133
R562
270
C504
101K
R504
27K
Q508
2SA949Y
Q532
2SC1740S_S
R582
5.6K
R584
3.9K
R588
2K
R590
3.3K
Q534
2SC1740S_S
R568
22
C510
10/50
+
R580
100
C512
NONE
Q504
2SC2240-BL
R532
18K
R526
(1/2W)
68 R528
(1/2W)
82
C522
10/50
+
Q514
2SA949Y
Q516
2SC2229-Y
R548
0.22(5W)
C516
101K
R516
1.5K
C506
220/25
+
C598
NONE
C524
020C
Q510
2SA949Y
R530
(1/2W)
56
C508
NONE R570
22
R546
22K
L502
J692
NONE
R556
(1W)
8.2
C518
473J
P598A
NONE P598B NONE
C514
47/25
+
P512
1
2
R536
18K
C596
NONE C530
NONE
R514
56K
R534
56K
R544
(1/2W)
220
R542
(1/2W)
2.2
R540
(1/2W)
2.2
R592
(1/4W)
2.2
Q502
2SC2240-BL
R506
10
Q530
BL
2SC2458-GR
R550
3.3K
R586
820
Q520
2SA1930
Q518
2SC5171
Q522
Q524
R512
5.6K
Q506
BL
2SC2240-GR
R524
(1/2W)
82
R554
47K
Q528
2SC2229-Y R552
33K
P641
W
S-CLAMP
P642
W
S-CLAMP
R921
0.47(1/2W)
P915A
P916A
P914A
8
9
10
11
12
13
14
16
15
18
17
C991
104J
R922
0.47(1/2W)
J991
J992
C992
104J
R923
5.6(1/2W)
JL913A
7
3
T901
NPT-1544D(D)
NPT-1544P(P/A)
3
5
7
8
9
10
11
12
14
15
16
17
U02
U
023
U022
47/63
1SS133
1SS133
D924
8200/56
A
1
2
3
4
5
BCD
See Extended
figure 1-2
See Extended
figure 1-2

TX-8222
SCHEMATIC DIAGRAM 1-2
Power amplifier section
A
1
2
3
4
5
BCD
ID+
ID-
2SC5197
2SA1940
[57.6V]
[-57.6V]
[1.2V]
[-1.2V]
[0.6V]
[-0.6V]
[0V]
[-0.6V]
[-55.8V]
[-22.8V]
[55.8V] [55.8V]
[56.3V]
[56.3V]
[-55.7V]
[0.6V]
ID ADJ
-O
ID+
ID-
2SC5197
2SA1940
[57.6V]
[-57.6V]
[1.2V]
[-1.2V]
[0.6V]
[-0.6V]
[0V]
[-0.6V]
[-55.8V]
[-22.8V]
[55.8V] [55.8V]
[56.3V]
[56.3V]
[-55.7V]
[0.6V]
ID ADJ
-O
R501
470
R565
120K
C501
47/50
+
R507
47 R509 47
C519
104J
R519
1K
R517
1K R521
(1/2W)
82
R577
120K
R563
100K
D511
1SS133
R561
270
C503
101K
R503
27K
Q507
2SA949Y
Q531
2SC1740S_S
R581
5.6K
R583
3.9K
R587
2K
R589
3.3K
Q533
2SC1740S_S
R567
22
C509
10/50
+
R579
100
Q503
2SC2240-BL
R531
18K
R525
(1/2W)
68 R527
(1/2W)
82
C521
10/50
+
Q513
2SA949Y
Q515
2SC2229-Y
R547
0.22(5W)
C515
101K
R515
1.5K
C505
220/25
+
C523
020C
Q509
2SA949Y
R529
(1/2W)
56
R569
22
R545
22K
L501
R555
(1W)
8.2
C517
473J
C513
47/25
+
P511
1
2
R535
18K
R513
56K
R533
56K
R543
(1/2W)
220
R541
(1/2W)
2.2
R539
(1/2W)
2.2
R591
(1/4W)
2.2
Q501
2SC2240-BL
R505
10
Q529 BL
2SC2458-GR
R549
3.3K
R585
820
Q519
2SA1930
Q517
2SC5171 Q521
Q523
R511
5.6K
Q505
BL
2SC2240-GR
R523
(1/2W)
82
R553
47K
Q527
2SC2229-Y R551
33K
R502
470
R566
120K
C502
47/50
+
R508
47 R510 47
C520
104J
R520
1K
R518
1K R522
(1/2W)
82
R578
120K
R564
100K
D512
1SS133
R562
270
C504
101K
R504
27K
Q508
2SA949Y
Q532
2SC1740S_S
R582
5.6K
R584
3.9K
R588
2K
R590
3.3K
Q534
2SC1740S_S
R568
22
C510
10/50
+
R580
100
Q504
2SC2240-BL
R532
18K
R526
(1/2W)
68 R528
(1/2W)
82
C522
10/50
+
Q514
2SA949Y
Q516
2SC2229-Y
R548
0.22(5W)
C516
101K
R516
1.5K
C506
220/25
+
C524
020C
Q510
2SA949Y
R530
(1/2W)
56
R570
22
R546
22K
L502
R556
(1W)
8.2
C518
473J
C514
47/25
+
P512
1
2
R536
18K
R514
56K
R534
56K
R544
(1/2W)
220
R542
(1/2W)
2.2
R540
(1/2W)
2.2
R592
(1/4W)
2.2
Q502
2SC2240-BL
R506
10
Q530 BL
2SC2458-GR
R550
3.3K
R586
820
Q520
2SA1930
Q518
2SC5171
Q522
Q524
R512
5.6K
Q506
BL
2SC2240-GR
R524
(1/2W)
82
R554
47K
Q528
2SC2229-Y R552
33K

TX-8222
SCHEMATIC DIAGRAM 2 DISPLAY SECTION
FLDRST
FLDSDO
FLDCS
FLDCLK
MEMORY
FM MUTE /MODE
STAND BY/ON
TUNING DOWN
TUNING UP
DISPLAY
SP-A
SP-B
PQR
MNO
JKL
GHI
DEF
ABC
DIRECT TUNING
ENTER
CATE- GORY
0/10 */
XM/ SIRIUS
FM/AM
TAPE-1
TAPE-2
VIDEO
DVD
NADIS-8877
STU
L
8
0
C858
101J
C856
104Z
R883
27K
R882 220
R881 220
R880 3.3K
R879 3.3K
C854 223Z
C853
223Z
C860 101J
C864
223Z
C863 101J
C862 101J
C861 101J
R884
100K
Q851
M66005-
0001AHP
49 SEG2
50SEG1
51SEG0
52VCC2
53DIG15/SEG39
54DIG14/SEG38
55DIG13/SEG37
56DIG12/SEG36
57DIG11
58DIG10
59DIG9
60DIG8
61DIG7
62DIG6
63DIG5
64 DIG4
1DIG03 2DIG02 3DIG01 4DIG00 5_RESET 6_CS 7SCK 8SDATA 9P1
10P0 11VCC1 12XOUT 13XIN 14VSS 15 SEG35 16 SEG34
17
SEG33
18
SEG32
19
SEG31
20
SEG30
21
SEG29
22
SEG28
23
SEG27
24
VP
25
SEG26
26
SEG25
27
SEG24
28
SEG23
29
SEG22
30
SEG21
31
SEG20
32
SEG19
33
SEG18
34
SEG17
35
SEG16
36
SEG15
37
SEG14
38
SEG13
39
SEG12
40
SEG11
41
SEG10
42
SEG9
43
SEG8
44
SEG7
45
SEG6
46
SEG5
47
SEG4
48
SEG3
R876
330
R855
330
R862
330
R869
330
R877
470
R856
470
R863
470
R870
470
R878
560
R857
560
R864
560
R871
560
R851
820
R858
820
R865
820
R872
820
R852
1.2K
R859
1.2K
R866
1.2K
R873
1.2K
R853
2.2K
R860
2.2K
R874
2.2K
C857
100/16
+
Q853
2SC2712-GR
S880
S881
S858
S857
S856
S864
S865 S866
S867
S875 S874
S873
S872
S882
S851
S859
S852
S868
S876
S877 S869 S861 S853
S860
R867
2.2K
C866
100/16
R886 220
D851
MTZJ8.2B
C870
223Z C869
223Z
C868
223Z
C867
223Z
C865
33/50
+
R885 220
Q852
16-BT-128GNYK
1F21
2F22 5P35 6P34 7P33 8P32 9P31
10 P30 11 P29 12 P28 13 P27 14 P26 15 P25 16 P24 17 P23 18 P22 19 P21 20 P20 21 P19 22 P18 23 P17 24 P16 25 P15 26 P14 27 P13 28 P12 29 P11 30 P10 31 P9 32 P8 33 P7 34 P6 35 P5 36 P4 37 P3 38 P2 39 P1 40 16G 41 15G 42 14G 43 13G 44 12G 45 11G 46 10G 47 9G 48 8G 49 7G 50 6G 51 5G 52 4G 53 3G 54 2G 55 1G 58 F11 59 F12
S862
S878
U012
A
1
2
3
4
5
BCD

TX-8222
SCHEMATIC DIAGRAM 2 DISPLAY SECTION
FLDRST
FLDSDO
FLDCS
FLDCLK
IRIN
IROUT
MPUGND
+5VCPU
MPUGND
+5VDIS
REMIN
KEY0
KEY1
KEY2
KEY3
FLDCS
FLDSDO
FLDCLK
KEYINT0
KEYINT1
KEYINT2
KEYINT3
LEDSTBY
LEDPURE
FLDRST
MEMORY
FM MUTE /MODE
STAND BY/ON
TUNING DOWN
TUNING UP
DISPLAY
PQR
MNO
JKL
GHI
DIRECT TUNING
ENTER
XM/ SIRIUS
FM/AM
TAPE-1
TAPE-2
TO NAAF-8886(SCH.-1)
NADIS-8877
YZ-
VWX
STU PHONO
CD
NAETC-8882
TO NADG-8876(SCH.-3)
FROM NAAF-8886(SCH.-1)
L852
022K
C858
101J
C856
104Z
R883
8
2220
8
1220
0
3.3K
9
3.3K
C854 223Z
C853
223Z
P
12
XOUT
13XIN 14VSS 15 SEG35 16 SEG34
17
SEG33
18
SEG32
19
SEG31
20
SEG30
21
SEG29
22
SEG28
23
SEG27
24
VP
25
SEG26
26
SEG25
27
SEG24
28
SEG23
29
SEG22
30
SEG21
31
SEG20
32
SEG19
33
SEG18
34
SEG17
35
SEG16
36
SEG15
37
SEG14
SG3
8
77
7
0
R856
470
6
3
0
7
0
4
70
R878
560
R857
560
R864
560
R871
560
R851
820
R858
820
R865
820
R872
820
R852
1.2K
R859
1.2K
R866
1.2K
R873
1.2K
R853
2.2K
R860
2.2K
R874
2.2K
C857
100/16
+
S858
S866
S867
S875 S874
S882
S851
S859
S852
S868
S876
S877 S869 S861 S853
S860
R867
2.2K
JL716B
1
2
3
C866
100/16
R886 220
D851
MTZJ8.2B
C870
223Z C869
223Z
C868
223Z
C867
223Z
C865
33/50
+
R885 220
Y
K
35
P5
36 P4 37 P3 38 P2 39 P1 40 16G 41 15G 42 14G 43 13G 44 12G 45 11G 46 10G 47 9G 48 8G 49 7G 50 6G 51 5G 52 4G 53 3G 54 2G 55 1G 58 F11 59 F12
D853
SLI-343URC-TE7
P715B
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
R891
2.2K
R887
100
C871
102J
R888
1K
L857
470M
R854
3.9K
R861
3.9K
R875
3.9K R889
12K
C873
100/16
+
U851
3
2
1
5
4
S862
S878
S879 S883
S863
R892
3.9K
D854
SIR-34ST3F
P503
PHONES
3
2
1
C876
104Z
C874
102J
C875
102J
L855
220M
L853
220M
L854
220M
P504
JL711A
3
2
1
U012
U017
A
1
2
3
4
5
BCD

TX-8222
SCHEMATIC DIAGRAM 3 MICROPROCESSOR SECTION
U01
LEDZONE2
LEDPURE
IROUT
IRIN
+5VTU
SYSIN
PLLSDA
TUNED
STEREO
RDSSIG
TUR
TUL
+9V_TU
PLLCLK
RDSDAT
TUNED
+12VA
+5VCPU
KEYINT0
LEDSTBY
+5VMPU
KEY1
KEY2
KEY3
VSWB
KEY0
VSWA
FLDCLK
FLDSDO
FLDCS
FLDRST
KEYINT1
KEYINT2
KEYINT3
RI
IRIN
NADG-8876
TO TUNER PACK
IROUT
(VX)
(VR)
R6770R676
0R675
0
81
82
83
84 P04/AN04/
D
85 P03/AN03/
D
86 P02/AN02/
D
87 P01/AN01/
D
88 P00/AN00/
D
89 P107/AN7/
K
90 P106/AN6/
K
91 P105/AN5/
K
92 P104/AN4/
K
93 P103/AN3
94 P102/AN2
95 P101/AN1
96 AVSS
97 P100/AN0
98 Vref
99 AVcc
100 P97/ADTR
G
1 2 3
477
78
P12/D10
79
P11/D9
80
P10/D8
Q701
S-812C56
AUA-C3K
2I
1G
3
O
P708
P707 1
2
3
P706
1
2
3
21
22
23
P704A
1
2
3
4
5
6
7
8
9
10
11
12
13
L701
470M
C709
100/16
+
C703
100/16
+
C702
100/16
+
R671 220
D702
1SS355
D713
R850
10K
D707
1SS355
D706
1SS355
D705
1SS355
C729
104Z
C728
104Z
C719
104Z
D604 UDZS5.1B
R710
10(1/2W)
C701
104Z
R678
220K
R722
47K
R721
47K
C716
101J
R709
100
R701
1K
J702
J701
C718 100/16
C717
3.3/50
D703
D701
1SS355
C704
DX-5R5L224
+
Q602
RN1404
R696
47K
R610 10
K
R612
47K
R613
1M
R674 10
K
R673 10
K
R672
10K
R679 47
R680 47
R681 47
R682 47
R683 47
R684 4.7K
R685 4.7K
R686 4.7K
R687 4.7K
R688 4.7K
R690 4.7K
R692 4.7K
R694 4.7K
R695 2.7K
R693 2.7K
R691 2.7K
R689 2.7K
C601 104Z
C613 102K
C614 102K C615 102K C616 102K
C617 102K
C618 102K
C619102K
C620 102K
C621
104Z
C622104Z
R609 10
K
R601220
R602
220
C623
4.7/50
+
D601
1SS355
1SS355
J701/J702:(P/A)
A
1
2
3
4
5
BCD

TX-8222
SCHEMATIC DIAGRAM 3 MICROPROCESSOR SECTION
U01
BAND
INT1 INT2 INT3
SPRLB
CNVSS
FEPM
FCE
RESET
SYSOUT
SPRLA
DIRECT
+5VCPU
MPUGND
+5VDIS
IROUT IRIN LEDZONE2 LEDPURE
MPUGND
FLDRST
KEY3
KEY2 KEY1
KEY0
REMIN
KEYINT3 KEYINT2 KEYINT1 KEYINT0
FLDCS
FLDCLK
FLDSDO
LEDSTBY
REMIN
MPUGND
RESET
FCLK
FBUSY
FRXD
FTXD
CNVSS
+5VMPU
APOWER
MPUGND
+10S
PLLSDA
TUNED
SIRIUSTX
SIRIUSRX
SRRST
TUXMSELA RDSSIG
RDSDAT
PLLCLK
SYSIN
SYSIN
SEC1H
PROTECT
VOLH
VSWB
XMDACRST
XMCOMSEL
SELDAT SELCLK SELSTB
TUXMSELB
XMRST
XMSRTXD
FBUSY
FCLK
FRXD
AMUT
VSWA
FTXD
XMSRRXD
VOLOUT1
VOLOUT2
APOWER
THERMAL
STEREO
POFF
+12VS
RLGND
POFF
APOWER
-12VA
POFF2
SPRLA
SPRLB
SEC1H
+12VA
TS_GND
TU-GND
TU_L
TU_R
DIRECT
PROTECT
+12VR
MPUGND
RLGND
SELCLK
SELDAT
VSWA
VSWB
SELSTB
AMUT
VOLOUT2
VOLOUT1
5.6VM
+12VS
MPUGND
THERMAL
+5VTU
+5VTU
THERMAL
MPUGND
NADG-8876
TO DISPLAY(SCH.-2)
TO FLASH WRITER
NAETC-8878
TO NAAF-8886 (SCH.-1)
R61547K
R6770
R676
0R675
0
R662 0 R661 0 R660 0
R657
0R656
0
R650 0
R646 0
R642 0
R641 0
R640 0
R61647K
Q706
78M56
3O
2
G
1
I
Q601
M30624FGPFP
P07/AN07/D7
P06/AN06/D6
P05/AN05/D5
P
04/AN04/D4
P
03/AN03/D3
P
02/AN02/D2
P
01/AN01/D1
P
00/AN00/D0
P
107/AN7/KI3
P
106/AN6/KI2
P
105/AN5/KI1
P
104/AN4/KI0
P
103/AN3
P
102/AN2
P
101/AN1
A
VSS
P
100/AN0
V
ref
A
Vcc
P
97/ADTRG/SIN4
1
P96/ANEX1/SOUT4
2
P95/ANEX0/CLK4
3
P94/DA1/TB4IN
4
P93/DA0/TB3IN
5
P92/TB2IN/SOUT3
6P91/TB1IN/SIN3 7P90/TB0IN/CLK3 8BYTE 9CNVSS
10 P87/XCIN 11 P86/XCOUT 12 RESET 13 XOUT 14 VSS 15 XIN 16 VCC1 17 P85/NMI 18 P84/INT2 19 P83/INT1 20 P82/INT0 21 P81/TA4IN/U 22
P80/TA4OUT/U
23 P77/TA3IN
24
P76/TA3OUT
25
P75/TA2IN/W
26
P74/TA2OUT/W
27
P73/CTS2/RTS2/TA1IN/V
28
P72/CLK2/TA1OUT/V
29
P71/RXD2/SCL2/TA0IN/TB5IN
30
P70/TXD2/SDA2/TA0OUT
31
P67/TXD1/SDA1
32
P66/RXD1/SCL1
33
P65/CLK1
34
P64/CTS1/RTS1/CTS0/CLKS1
35
P63/TXD0/SDA0
36
P62/RXD0/SCL0
37
P61/CLK0
38
P60/CTS0/RTS0
39
P57/RDY/CLKOUT
40
P56/ALE
41
P55/HOLD
42
P54/HLDA
43
P53/BCLK
44
P52/RD
45
P51/WRH/BHE
46
P50/WRL/WR
47
P47/CS3
48
P46/CS2
49
P45/CS1
50
P44/CS0
51
P43/A19
52
P42/A18
53
P41/A17
54
P40/A16
55
P37/A15
56
P36/A14
57
P35/A13
58
P34/A12
59
P33/A11
60
P32/A10
61
P31/A09
62
VCC2
63
P30/A8(/-/D7)
64
VSS
65
P27/AN27/A7(/D7/D6)
66
P26/AN26/A6(/D6/D5)
67
P25/AN25/A5(/D5/D4)
68
P24/AN24/A4(/D4/D3)
69
P23/AN23/A3(/D3/D2)
70
P22/AN22/A2(/D2/D1)
71
P21/AN21/A1(/D1/D0)
72
P20/AN20/A0(/D0/-)
73
P17/D15/INT5
74
P16/D14/INT4
75
P15/D13/INT3
76
P14/D12
77
P13/D11
78
P12/D10
79
P11/D9
80
P10/D8
P715A
24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1
R669 220
R734
270(1W) (P/A)
R700
0
R704
10K
R70210K
P705
9
8
7
6
5
4
3
2
1
L702
022K
C712
100/16
+
C710
470/10
+
R699
220(P)
D704
R729 1M
R671 220
R670 220
R697
47K
R626 47
R717
R715
R720*
R714 104Z
R622220
R624
220
C711 104Z
C606
104Z
D603
1SS355
X601
6.000MHz
C708
474K
R667
47K
R666 220
C603
104Z
C602
104Z
D708
Q705
RN2402
2
Q703
RN1404
C706
10/50
+
R705
2.2K
010K
R608
220 (P)
3
R61410K
R618220 R619220 R620220 R621220
R625220
R629
10K
R630
10K
R639 47
R638 220
R637 47
R636 47
R635 47
R634 47
R633
47
R631
10K
R64447
R64547
R643
R647
10K
R648
10K R649 10K
R651
10K
R652
10K
R653
10K
R654220
R655
220
R658
1K
R664 220 R665 220
R
674 10K
R
673 10K
C604
101J C605
101J
R66347
C607 104Z
104Z
C611 104Z
C612 104Z
9
10K
220
R602
220
Q603
RN2402
D6021SS355
R733
10(1W)
JL911B
1
2
3
4
5
6
P702A
13
12
11
10
9
8
7
6
5
4
3
2
1
P701A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
Q855
LM61CIZ
2O
1G3
V
JL703A
3
2
1
JL703B
1
2
3
U08
1SS355
1SS355
0
10KR719*
56K33K
4.7K
R720 33K56K
33K
R719 (A)(P)(D)
C609
C610
0
10K
TO NAPS-8880 (SCH.-4)
560(1W) (D)
A
1
2
3
4
5
BCD

TX-8222
SCHEMATIC DIAGRAM 4
POWER SUPPLY SECTION
U015
MPUGND
POWER
+10S
POFF
RLGND
+12VS
AC-G
AC-H
NPT-1520JQD model NPT-1519GQP/A model
T902
NAETC-8881
TO POWER TRANSFORMER T901
NAPS-8880
TO MAIN NADG-8876 (SCH.-3)
THERMAL FUSE
POWER TRANSFORMER
PRIMARY
TO NAPS-8881
C903
2200/35
+
T902
1 2 3 4
56
7 8 9
C906
4.7/50
+
R913
1K
R914
100K
R909
100K
D912
1SS355
D901
1SS355
D902
1SS355
D903
1SS355
D905
1SS355
D906
1SS355
D909
1SS355
D991
1SS355
D992
1SS355
C991
104Z
C902
104Z
D904
1SS355
D913
1SS355
RL902
1
3 2
4
D908
1SS355 D914
UDZ5.1B
F902
2.5A-SE-EAK
(P/A)
J907
J918
Q912
KTC3199-GR
C912
103M/275
R915
150(1/2W)
F901
5A-UL/T-237(D)
JL911A
1
2
3
4
5
6
P991
P901A
2
1
P912A
1
P911A
1
F903
C904
100/35
+
J904
P910
AC_CABLE
P911B
1
P913B
1
P912B
1
ATTENTION
VA
ET CALIBRATION COMME INDIQUE.
D'INCENDIE, REMPLACER UNIQUEMENT
PERMANENTE CONTRE LES RISQUES
AFIN D'ASSURER UNE PROTECTION
PAR UN FUSIBLE DE MEME TYPE
VA
AGAINST FIRE HAZARD, REPLACE
FOR CONTINUED PROTECTION
AND RATING INDICATED.
ONLY WITH FUSE OF SAME TYPE
CAUTION
E LENT. POUR UNE PROTECTION PERMANENTE,N'UTILISER
CE SYMBOLE INDIQUE QUE LE FUSIBLE UTLISE EST
INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.
QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST
RATING REFER TO THE MARKING ADJACENT TO THE SYMBOL
FOR CONTINUED PROTECTION AGAINST FIRE
HAZARD,REPLACE WITH SAME TYPE FUSE. FOR FUSE
THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
THAT THE FUSE USED IS SLOW OPERATING TYPE
J930
(MEASURED WITH
BY MARK ARE CRITICAL FOR SAFETY
IDENTIFIED
NOTE
THE COMPONENTS
REPLACE ONLY WITH PART NUMBER SPECIFIED.
.
.VOLTAGE VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL)
.ELECTROLYTIC CAPACITORS ( )ARE IN F/WV.
.ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030-3pF 330-33pF 331-330pF 333-0.033uF
u
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.
.
.
T901
NPT-1544D(D)
NPT-1544P(P/A)
3
5
7
8
9
10
11
12
13
14
15
16
17
18
U016
5A-UL/T-233(D)
2.5A-SE-EAK(P/A)
TO POWER TRANSFORMER
A model P model D model
(D): D model: North American model 120V 60Hz
(P): P model: European model 230~240V 50Hz
(A): A model: Australian model 230~240V 50Hz
A
1
2
3
4
5
BCDEFGH

TX-8222
A
1
2
3
4
5
BCD
WIRINGVIEW
TRANSFORMERTERMINAL
PC BOARD (NAPS-8887)
TRANSFORMERTERMINAL
PC BOARD (NAETC-8881)
P303
P501
P512
R588
R587
JL918B
P511
JL711B
JL913B
JL716B
JL261
B
P910
P911A P901A
T902 JL911A
P913A
P912A
P504
JL711A
P503
P912B
P911B
P913B
P914A
RED
P915A
BLK
JL917A
JL913A
FUSETERMINAL
PC BOARD (NAPS-8889)
D912
JL918A
JL917B
PRIMARY CIRCUIT
PC BOARD
(NAPS-8880)
AC IN
WHT
P916A
T901 NPT-1543*
P916B
P914B P915B
U02
U017
U022
U016
U024
U015
MA
PC
(N
A
HEADPHONETERMINAL
PC BOARD
(NAETC-8882)
To Chassis
SCH.4
SCH.4
SCH.1
SCH.1
S
SCH.2
:FFC
:Board to Board
:Jumper wire
Soldering side
Insertion
side

TX-8222
A
1
2
3
4
5
BCD
WIRINGVIEW
U023
VOLUME PC BOARD
(NAAF-8888)
P301
JL613A
P702B
P701B
P302
L
261B
P715B
Q852
JL716B
P715A
P707 P706
P704A
JL703B
P701A
P702A JL911B
P212B
P211B
P705A
JL703A
JL613B
R641
THERMAL
DETECTOR
PC BOARD
(NAETC-8878)
U012
U01 U013
U05
U02
DISPLAY CIRCUIT
PC BOARD(NADIS-8877)
MICROPROCESSOR PC BOARD
(NADG-8876)
FM/AMTUNER
PACK
MAIN CIRCUIT
PC BOARD
(NAAF-8886)
SCH.1
SCH.2
SCH.1
SCH.3
SCH.3

TX-8222
PRINTED CIRCUIT BOARDVIEW 1
U01 MICROPROCESSOR PC BOARD (NADG-8876)
COMPONENT SIDE
SOLDERING SIDE
A
1
2
3
4
5
BCD
Reversal letter:
D901
:Soldering side parts

TX-8222
PRINTED CIRCUIT BOARDVIEW 1
U015 PRIMARY CIRCUIT PC BOARD (NAPS-8880)
COMPONENT SIDE
SOLDERING SIDE
A
1
2
3
4
5
BCD
Reversal letter:
D901
:Soldering side parts

TX-8222
PRINTED CIRCUIT BOARDVIEW 2
U012 DISPLAY CIRCUIT PC BOARD (NADIS-8877)
COMPONENT SIDE
Reversal letter:
D901
:Soldering side parts
A
1
2
3
4
5
BCD

TX-8222
PRINTED CIRCUIT BOARDVIEW 2
U012 DISPLAY CIRCUIT PC BOARD (NADIS-8877)
SOLDERING SIDE
COMPONENT
SIDE
A
1
2
3
4
5
BCD
Reversal letter:
D901
:Soldering side parts