Onkyo TX-8255 User manual

TX-8255
SERVICE MANUAL
SERVICE MANUAL
RC-666S
STEREO RECEIVER
MODEL TX-8255
Ref. No. 4088
072008
Black and Silver models
120V AC, 60Hz
230 - 240V AC, 50Hz
B MDC
B MPP, S MPP
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.

Request ID TMAI-7EGFDR
ONKYO Service Manual
Written By :Terukazu Matumi
Request Date :2008/06/24
Status: Completed
Issuer Approver Reviewer Writer
Technical support Toshiyuki Otani
2008/09/09 Toshiaki Okuyama 2008/06/24 Terukazu Matumi 2008/05/09
Model:TX-8255
Ref No:4088
Component:
Printed service manual is not prepared.
Title Approve
(Date) Attached file
Cover 2008/05/29
Specifications /
Panel view /
Remote controller
‑‑‑ Refer to instruction manual.
Exploded view 2008/06/02
Block diagram 2008/06/24
<‑‑‑2 Pages (L/R)
<‑‑‑All (Tabloid size)
Schematic diagrams 2008/06/20
<‑‑‑2 Pages (L/R)
Amplifier section
<‑‑‑All (Tabloid size)
‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑
<‑‑‑2 Pages (L/R)
Microprocessor section
<‑‑‑All (Tabloid size)
‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑
Display section
‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑

Power supply section
Packing procedure 2008/05/28
Printed circuit board views ‑‑‑ Refer to service manual of "TX‑8222"
(Ref. No. : 3945)
IC block diagrams
and
Terminal descriptions /
FL tube view
2008/08/21 IC
Refer to service manual of "TX‑8222"
(Ref. No. : 3945)
‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑‑
FL tube
Microprocessor terminal descriptions ‑‑‑ Refer to service manual of "TX‑8222"
(Ref. No. : 3945)
Service procedure 2008/08/04
Operation check 2008/09/02
<‑‑‑2 Pages
p.1 : DC voltafe detection/ Thermal sensor
p.2 : Current detection
Adjustment procedure 2008/08/11
Idling current adjustment
Exploded view parts list /
Printed circuit board parts list /
Packing procedure parts list
2008/05/16
(1 sheet, about 17 Pages)
Back cover 2008/05/29

TX-8255
EXPLODED VIEW
TX-8255
A043
x 3 pcs.
A017
x 5 pcs.
A041
x 2 pcs.
A015
x 11 pcs.
A037
x 2 pcs.
A301
x 2 pcs.
A029
x 3 pcs.
E801
x 2 pcs.
A035
x 2 pcs.
A019
x 4 pcs.
E801
x 5 pcs.
A035
x 2 pcs.
A217
x 2 pcs.
A205
x 20 pcs.
P501A
x 8 pcs.
A025
x 3 pcs.
A025
x 3 pcs.
A031
x 5 pcs.
A035
x 2 pcs.
A035
x 2 pcs.
A203
x 6 pcs.
A521a
x 4 pcs.
A023
x 3 pcs.
A009
x 4 pcs.
A011
x 4 pcs.
A213
x 3 pcs.
A039
A212
A204
A013
A216
A211
A201
P715
P704
P901
U10
U07
U02
U09
T901
U06
U05
U12
U13
U01
U08
U03
U04
A214
A001
A003
F902
F901
D911
Q521
Q524
Q522 Q523
F903
A021
A209
A027
A033
A208
A207
A202
A210
A007 A005
A045
A215
A219
A204
A010
x 4 pcs.
MPP type only
MDC type only

TX-8255
BLOCK DIAGRAM
TX-8255
SPA
SPB
THERM
PRO
-B1
E
+B1
UP DOWN
STB
DATA
CL
TUNL
FLAC2
FLAC1
-VP
MUT
REMIN
FLDRST
FLDCS
FLDCLK
FLDSDO
+B3
-B3
TMUT
PLLCLK
PLLSDO
STEREO
SD
RDSCLK
RDSDAT
POW
+5.6V
+5V_MPU
+5V_CPU
+5V_CPU
+12V
-12V
TU-L
RI
IRIN
IROUT
K0
K1
K2
KEYINT0
KETINT1
KEYINT2
K3
KEYINT3
LEDSTBY
FLAC1
FLAC2
+5.6V
Q525, 526
Q581, 582
PROTECT
TO POWER AMP
120V
PRIMARY
THERMAL
SENSOR
Q855
VOLTAGE REGURATOR
PHONO EQULIZER
Q301
PHONO
OUT
IN
TAPE 1
CD
PLAY1
V1
LINE 1
/DVD IN
V2REC
V2PLAY
TUNER
PLAY2
REC2
OUT
IN
TAPE 2
LINE 2 IN
AUDIO IN / OUT
MOTOR DRIVE
Q481
DISPLAY CONTROL
MAIN MICROPROCESSOR
Q601
FL DRIVER
Q851
FL DISPLAY
Q852
FM/AM(RDS) TUNER UNIT
CONTROL KEYS
TO SELECTOR & PHONO EQ.
Q302
PHONO
CD
REC1
SELECTOR
240V
Q591
RELAY
DRIVE Q592
RELAY
DRIVE
POWER AMP.
RL901
PRI. RELAY
F903
OUTLET
AC IN
P501
SPEAKERS
A
SPEAKERS
B
RL591
SP. A RELAY
RL592
SP. B RELAY
P503
PHONES
C916
D911
Q921
Q922
D920
F901
Q912
R641
VOLUME
Q491
MUTING
R393
BALANCE
F902
D920
T902
SUB TRANS.
C915
REMOTE SENSOR
RI
IR IN
IR OUT
STANDBY
Q402
R409
BASS
Q401
R415
TREBLE
S901
NC
THERMAL FUSE
T901
Q706
D915 - 918
MAIN TRANS.
+12V
-12V
M30622MWP
U851
M66005
TC9273CNG
TA7291S
NJM2068
NJM2068
F902 ---> MPP type only
F901 ---> MDC type only
P910
P901
Q701
C709
C704
BACKUP
A
1
2
3
4
5
BCDEFGH

TX-8255
BLOCK DIAGRAM
TX-8255
SPA
SPB
THERM
PRO
-B1
E
+B1
UP DOWN
STB
DATA
CL
TUNL
FLAC2
FLAC1
-VP
MUT
REMIN
FLDRST
FLDCS
FLDCLK
FLDSDO
+B3
-B3
TMUT
PLLCLK
PLLSDO
STEREO
SD
RDSCLK
RDSDAT
POW
+5.6V
+5V_MPU
+5V_CPU
+5V_CPU
+12V
-12V
TU-L
RI
IRIN
IROUT
K0
K1
K2
KEYINT0
KETINT1
KEYINT2
K3
KEYINT3
LEDSTBY
FLAC1
FLAC2
+5.6V
Q525, 526
Q581, 582
PROTECT
TO POWER AMP
120V
PRIMARY
THERMAL
SENSOR
Q855
VOLTAGE REGURATOR
PHONO EQULIZER
Q301
PHONO
OUT
IN
TAPE 1
CD
PLAY1
V1
LINE 1
/DVD IN
V2REC
V2PLAY
TUNER
PLAY2
REC2
OUT
IN
TAPE 2
LINE 2 IN
AUDIO IN / OUT
MOTOR DRIVE
Q481
DISPLAY CONTROL
MAIN MICROPROCESSOR
Q601
FL DRIVER
Q851
FL DISPLAY
Q852
FM/AM(RDS) TUNER UNIT
CONTROL KEYS
TO SELECTOR & PHONO EQ.
Q302
PHONO
CD
REC1
SELECTOR
240V
Q591
RELAY
DRIVE Q592
RELAY
DRIVE
POWER AMP.
RL901
PRI. RELAY
F903
OUTLET
AC IN
P501
SPEAKERS
A
SPEAKERS
B
RL591
SP. A RELAY
RL592
SP. B RELAY
P503
PHONES
C916
D911
Q921
Q922
D920
F901
Q912
R641
VOLUME
Q491
MUTING
R393
BALANCE
F902
D920
T902
SUB TRANS.
C915
REMOTE SENSOR
RI
IR IN
IR OUT
STANDBY
Q402
R409
BASS
Q401
R415
TREBLE
S901
NC
THERMAL FUSE
T901
Q706
D915 - 918
MAIN TRANS.
+12V
-12V
M30622MWP
U851
M66005
TC9273CNG
TA7291S
NJM2068
NJM2068
F902 ---> MPP type only
F901 ---> MDC type only
P910
P901
Q701
C709
C704
BACKUP
A
1
2
3
4
5
BCDEFGH

TX-8255
BLOCK DIAGRAM
SPA
SPB
THERM
PRO
-B1
E
+B1
UP DOWN
STB
DATA
CL
TUNL
FLAC2
FLAC1
-VP
MUT
REMIN
FLDRST
FLDCS
FLDCLK
FLDSDO
+B3
-B3
TMUT
PLLCLK
PLLSDO
STEREO
SD
RDSCLK
RDSDAT
POW
+5.6V
+5V_MPU
+5V_CPU
+5V_CPU
+12V
-12V
TU-L
RI
IRIN
IROUT
K0
K1
K2
KEYINT0
KETINT1
KEYINT2
K3
KEYINT3
LEDSTBY
FLAC1
FLAC2
+5.6V
Q525, 526
Q581, 582
PROTECT
TO POWER AMP
120V
PRIMARY
THERMAL
SENSOR
Q855
VOLTAGE REGURATOR
PHONO EQULIZER
Q301
PHONO
OUT
IN
TAPE 1
CD
PLAY1
V1
LINE 1
/DVD IN
V2REC
V2PLAY
TUNER
PLAY2
REC2
OUT
IN
TAPE 2
LINE 2 IN
AUDIO IN / OUT
MOTOR DRIVE
Q481
DISPLAY CONTROL
MAIN MICROPROCESSOR
Q601
FL DRIVER
Q851
FL DISPLAY
Q852
FM/AM(RDS) TUNER UNIT
CONTROL KEYS
TO SELECTOR & PHONO EQ.
Q302
PHONO
CD
REC1
SELECTOR
240V
Q591
RELAY
DRIVE Q592
RELAY
DRIVE
POWER AMP.
RL901
PRI. RELAY
F903
OUTLET
AC IN
P501
SPEAKERS
A
SPEAKERS
B
RL591
SP. A RELAY
RL592
SP. B RELAY
P503
PHONES
C916
D911
Q921
Q922
D920
F901
Q912
R641
VOLUME
Q491
MUTING
R393
BALANCE
F902
D920
T902
SUB TRANS.
C915
REMOTE SENSOR
RI
IR IN
IR OUT
STANDBY
Q402
R409
BASS
Q401
R415
TREBLE
S901
NC
THERMAL FUSE
T901
Q706
D915 - 918
MAIN TRANS.
+12V
-12V
M30622MWP
U851
M66005
TC9273CNG
TA7291S
NJM2068
NJM2068
F902 ---> MPP type only
F901 ---> MDC type only
P910
P901
Q701
C709
C704
BACKUP
A
1
2
3
4
5
BCDEFGH

TX-8255
SCHEMATIC DIAGRAMS-1
AMPLIFIER SECTION
TX-8255
DATA
CLK
POFF2
TU_L
TU_R SE1H PROTECT
PROTECT
STB
VOL_UP
SP_A
SP_B
SP_A SP_B DIRECT +12VA
DIRECT
VOL_DN
AMUT
MON-A
MON-B
+12VA
5.6V
-12VA
VOL_DN VOL_UP
STB
AMUT DATA MON-A +12VS MON-B +12VR
CLK
+10S
FLAC2
FLAC1
FLAC1
FLAC2
-VP
SE1H
L2
R2
E
R3
E
E
L3
MTR+
MTR-
MTRG
R
L
R
L
L
VIDEO
TREBLE
BASS
VS
NC
OUT1 VREF
IN1
GND
MOTOR DRIVE
BALANCE
PHONO
EQUALIZER
SEL
STB
DATACL
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
OUT
TAPE 1
IN
TAPE 2
R
L
R
L
R
L
RLGND
T1 REC
P918
BUS
RLGND
+12V
-12V
TU_GND TS_GND
SPEAKERS
R
LL
R
AB
IN2
OUT2
VCC
IN
LINE 1/DVD IN
LINE-2 IN
R
V_GND
RLGND MPUGND
RL1N4003
1SR139-100
D915,D921:
GP104003E
NC
NAAF-8886
MPUGND
To NADG-8876
SD-2 : G3
MICROPROCESSOR PCB
NC
D401-D404 :
1SS133 or 1SS270
Q401-Q402 : NJM2068L-D
C915, 916 :
8200/56
NC
ID+
ID-
2SC5197
2SA1940
+0.6V
-0.6V
-0.6V
-55.8V
-22.8V
+55.8V
+55.8V
+56.3V
+56.3V
-55.7V
0.6V
-O
ID+
ID-
2SC5197
2SA1940
+0.6V
-0.6V
-0.6V
-55.8V
-22.8V
+55.8V +55.8V
+56.3V
+56.3V
-55.7V
+0.6V
-O
NAPS-8889
8A/125V NAPS-8887
VOLUME
NAAF-8888
R413
100K
C424
223Z
R311
39K
R313
100K
R314
100K
R417
1K
R418
1K
R575
220K
C342
223Z
R335
330
R336
330
R337
1M
R338
1M
R344
330
R345
1M
R346
1M
R302
1K
R349
22K
R343
330
R435
220K
R301
1K
C313
10/50
R304
56K
R303
56K
R305
220K
R306
220K
C307
100/10
R312
39K
C312
182J
Q301:B
NJM4565D-X
6
5
7
Q301:A
NJM4565D-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
C309
682J
C310
682J
R307
820
R308
820
R309
470K
R310
470K
R401
1K
C421
223J
C422
223J
C403
47/25
C407
47/25
R404
220K
R405
22K
R406
22K
C392
101K
C391
101K
C404
47/25
R391
1K C416
220/16
C971
223Z
R951
(1/2W)
2.2
C928
100/50
C931
223Z
R491
47K
R492
47K
R436
2.2K
D952
1SS133
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
C423
223Z
C443
NC
R442 10
C401
47/25
R441 10
R461
100K
R462
100K
R451
3.3K
R459
3.3K
R460
3.3K
R452
3.3K
D450
P916B
D981
NC
D982
NC
Q492
RN1241-A Q592
DTC123JS
Q591
DTC123JS
R411
1.2K
R595
10(1/2W)
C402
47/25
R402
1K
R408
3.3K
C408
47/25
R392
1K
R599
390(1W)
R598
390(1W)
R457
3.3K
C455
47/25
C435
NC
Q402:A
3
2
8
1
4
Q491
RN1241-A
C456
47/25
R458
3.3K
C428
NC
C429
NC
Q401:B
6
5
7
Q401:A
3
2
8
1
4
R403
220K
P301
P302
D983 C981
NC
C591
103J C592
103J
D591 D592
RL592
5
2
16
3
4
P501
R414
100K
C442
4.7/50
C436
NC
R315
330
R320
2.2K
C319
NC
C320
NC
C323
NC
C324
NC
P915B
P917A
NC
C341
223Z J594
NC
P917C
NC
R952
(1/2W)
2.2
P917D
NC
J593
D951
NC
J591
J592
Q925
NC
C433
103J
C434
103J
C412
47/25R412
1.2K
C411
47/25
P914B
RL450
RL921
C343
223Z J596
NC
R339
330
R340
330
R341
1M
C329
LIST
R342
1M
C330
LIST
P303
C459
103J
C953
4.7/50
+
RL922
R925
10(1/2W)
JL261B
1 2
3 4
D921
RL1N4003
GP104003E
D922
MTZJ33D
Q924
2SA965-Y
D954
MTZJ4.7B
Q493
KRA102M
D491
1SS133
C941
10/50
J103
R953
100K
J101
C925
334J
C919
330/35
C918
1000/35
C918A
NC
J902
NC J900
NC
R903
NC
C912
334J/50V
C911
334J/50V
P917B
NC
C305
152J
C306
152J
C303
47/25
C304
47/25
C441
100/16
R924
560(1/2W)
R455
22K
R456
22K
C415
220/16
C527
47/63
C528
47/63
J102
C534
102J
C532
102J
C531
102J
C533
102J
C535
102J
C536
102J
Q452
DTC123JS
C426 NC C425 NC
E591
E592
D953
1SS133
E593
NC
C930
223Z
R932
330K
R934
100(1/2W)
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
C526
NC
+
C526A
NC
+
C315
220/16
C316
220/16 R352
10
R351
10
R353
10
R354
10
C353
22/50
C354
22/50
JL913B
D571
MTZJ5.1B C583
1/50
C317
LIST
C318
LIST
C321
LIST
C322
LIST
C325
LIST
C326
LIST
C327
LIST
C328
LIST
C331
C332
C405
101K
C406
101K
C409
LIST
C410
LIST
Q403:A
Q403 : NJM2068L-D
3
2
8
1
4
C453
101K
Q403:B
6
57
C454
101K
C457
101K#
C458
101K#
C581
100/16
Q481
TA7291SG
1 2
3 4
5 6 7
8 9
RL591
4
3
61
2
5
R931
3.3K
(1/4W)
R933
22(1/2W)
R904
NC
R905
NC
R901
NC R900 NC
Q922
79M12
3O2
I
1
G
C923
10/50
C922
33/50
C921
223Z
C920
223Z
J901
C926
100/50
J595
NC
J903
P702B
1
2
3
4
5
6 7
8
9
10
11 12
13
P701B
19 15 10
5
JL716B
TO_NADIS-8887
SD-3 : C2
1 2 3
JL711B
3 2 1
R906
NC
JL613A
P705B
1
34
2
P704B
1
34
2
C915
C916
C924
334J
D911
D10XB60H
1
3
4
2
R415
100K
2
6
5
3
9
4
8
1
7
R393
250K
4
19
2
8
3
R409
100K
8
4
9
5
3
6
2
1
7
Q921
78M12
3O
2
G1
I
R919
1(1/2W)
D918A
D918
D3SBA20
Q921A
HEATSINK
4 31
2
R935
D924 GP104003E
RL1N4003
D986
NC
C983
NC
D984
C982
222J
D985
NC
Q402:B
6
5
7
JL918B
D920
RL1N4003
GP104003E
C525
NC
+
C525A
NC
+
R419
3.3K
R420
3.3K
C418
47/25
C451
47/25
C452
47/25
R454
220K
R453
220K C461
47/25
C462
47/25
C417
47/25
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
Q531
R581
5.6K
R583
3.9K
R587
2K
R589
3.3K
Q533
R567
22
C509
10/50
+
R579
100
C511
NC
Q503
R531
18K
R525
(1/2W)
68 R527
(1/2W)
82
C521
10/50
+
Q513
Q515
R547
0.22(5W)
C515
101K
R515
1.5K
C505
220/25
+
C597
NC
C523
020C
Q509
C507 NC R569
22
R545
22K
L501
J691
NC
R555
(1W)
8.2
C517
473J
P597A
NC P597B NC
C513
47/25
+
P511
R535
18K
C595
NC C529
NC
R513
56K
R533
56K
R543
(1/2W)
220
R541
(1/2W)
2.2
R539
(1/2W)
2.2
R591
(1/4W)
2.2
Q501
R505
10
Q529
BL
2SC2458-GR
R549
3.3K
R585
820
Q519
2SA1930
Q517
2SC5171
Q523
R511
5.6K
Q505
Q505, 506 : 2SC2240-GR, -BL
R523
(1/2W)
82
R553
47K
Q527
2SC2229-Y R551
33K
R529
(1/2W)
47
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
Q532
R582
5.6K
R584
3.9K
R588
2K
R590
3.3K
Q534
R568
22
C510
10/50
+
R580
100
C512
NC
Q504
R532
18K
R526
(1/2W)
68 R528
(1/2W)
82
C522 10/50
+
Q514
Q516
R548
0.22(5W)
C516
101K
R516
1.5K
C506
220/25
+
C598
NC
C524
020C
Q510
C508 NC
R570
22
R546
22K
L502
J692
NC
R556
(1W)
8.2
C518
473J
P598A
NC P598B NC
C514
47/25
+
P512
R536
18K
C596
NC C530
NC
R514
56K
R534
56K
R544
(1/2W)
220
R542
(1/2W)
2.2
R540
(1/2W)
2.2
R592
(1/4W)
2.2
Q502
R506
10
Q530 BL
2SC2458-GR
R550
3.3K
R586
820
Q520
2SA1930
Q518
2SC5171
Q522
Q524
R512
5.6K
Q506
R524
(1/2W)
82
R554
47K
Q528
2SC2229-Y
R552
33K
R530
(1/2W)
47
JL917B
F912
J912
J911F911
JL918A
D912
D10XB60H
P919
R921
0.47(1/2W)
P915A
P916A
P914A
8
9
10
11
12
13
14
16
15
18
17
JL917A
C991
104J
R922 0.47(1/2W)
J991
J992
C992
104J
R923
5.6(1/2W)
C995
NC
JL913A
C993
NC
C994
NC
F913
4A125V (NC)
F914
4A125V (NC)
R644
8.2K
R643
8.2K
C648
223Z
P641
WS-CLAMP
P642
WS-CLAMP
JL613B
R641
47
1
52
6
3
Refer to following table about the parts displayed by mark "LIST".
<Note>
NC = No mount of parts.
SD-Z : XY
Location of connected terminal in schematic diagrams.
SD-Z = Schematic diagrams-Z. X = A to H, Y = 1 to 5.
To POWER TRANS.
SD-4 : E1
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
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.
!
NOTE
POWER AMP. L ch
POWER AMP. R ch
U08
AMPLIFIER PC BOARD
U09
TRANS. SEC.
TERMINAL PC BOARD
U10
VOLUME PC BOARD
SELECTOR
NC
Q501-504 : 2SC2240-BL
Q507 - 510, 513, 514 : 2SA949-Y
Q515, 516 : 2SC2229-Y
Q531 - 534 : 2SC1740S-S
R587 :
IDLING ADJUST
R588 :
IDLING ADJUST
Q521
OUT
IN
DISPLAY PCB
NC
NC
NC
U07
HEADPHONE JACK
PC BOARD
NAETC-8882
P503
PHONES
3
2
1
C876
104Z
C874
102J
C875
102J
L855
220M
L853
220M
L854
220M
P504
JL711A
3
2
1
+12V
-12V
+57.6V
+57.6V
-57.6V
-57.6V
0V
0V
+1.2V
+1.2V
-1.2V
-1.2V
-12V
+12V
C317, 318
C321,322,
C325-330
C409, 410
None 101K
MDC MPPTYPE --->
+5.6V
0V
+12V
-12V
-12V
+12V
A
1
2
3
4
5
BCDEFGH

TX-8255
SCHEMATIC DIAGRAMS-1
AMPLIFIER SECTION
TX-8255
DATA
CLK
POFF2
TU_L
TU_R SE1H PROTECT
PROTECT
STB
VOL_UP
SP_A
SP_B
SP_A SP_B DIRECT +12VA
DIRECT
VOL_DN
AMUT
MON-A
MON-B
+12VA
5.6V
-12VA
VOL_DN VOL_UP
STB
AMUT DATA MON-A +12VS MON-B +12VR
CLK
+10S
FLAC2
FLAC1
FLAC1
FLAC2
-VP
SE1H
L2
R2
E
R3
E
E
L3
MTR+
MTR-
MTRG
R
L
R
L
L
VIDEO
TREBLE
BASS
VS
NC
OUT1 VREF
IN1
GND
MOTOR DRIVE
BALANCE
PHONO
EQUALIZER
SEL
STB
DATACL
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
OUT
TAPE 1
IN
TAPE 2
R
L
R
L
R
L
RLGND
T1 REC
P918
BUS
RLGND
+12V
-12V
TU_GND TS_GND
SPEAKERS
R
LL
R
AB
IN2
OUT2
VCC
IN
LINE 1/DVD IN
LINE-2 IN
R
V_GND
RLGND MPUGND
RL1N4003
1SR139-100
D915,D921:
GP104003E
NC
NAAF-8886
MPUGND
To NADG-8876
SD-2 : G3
MICROPROCESSOR PCB
NC
D401-D404 :
1SS133 or 1SS270
Q401-Q402 : NJM2068L-D
C915, 916 :
8200/56
NC
ID+
ID-
2SC5197
2SA1940
+0.6V
-0.6V
-0.6V
-55.8V
-22.8V
+55.8V
+55.8V
+56.3V
+56.3V
-55.7V
0.6V
-O
ID+
ID-
2SC5197
2SA1940
+0.6V
-0.6V
-0.6V
-55.8V
-22.8V
+55.8V +55.8V
+56.3V
+56.3V
-55.7V
+0.6V
-O
NAPS-8889
8A/125V NAPS-8887
VOLUME
NAAF-8888
R413
100K
C424
223Z
R311
39K
R313
100K
R314
100K
R417
1K
R418
1K
R575
220K
C342
223Z
R335
330
R336
330
R337
1M
R338
1M
R344
330
R345
1M
R346
1M
R302
1K
R349
22K
R343
330
R435
220K
R301
1K
C313
10/50
R304
56K
R303
56K
R305
220K
R306
220K
C307
100/10
R312
39K
C312
182J
Q301:B
NJM4565D-X
6
5
7
Q301:A
NJM4565D-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
C309
682J
C310
682J
R307
820
R308
820
R309
470K
R310
470K
R401
1K
C421
223J
C422
223J
C403
47/25
C407
47/25
R404
220K
R405
22K
R406
22K
C392
101K
C391
101K
C404
47/25
R391
1K C416
220/16
C971
223Z
R951
(1/2W)
2.2
C928
100/50
C931
223Z
R491
47K
R492
47K
R436
2.2K
D952
1SS133
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
C423
223Z
C443
NC
R442 10
C401
47/25
R441 10
R461
100K
R462
100K
R451
3.3K
R459
3.3K
R460
3.3K
R452
3.3K
D450
P916B
D981
NC
D982
NC
Q492
RN1241-A Q592
DTC123JS
Q591
DTC123JS
R411
1.2K
R595
10(1/2W)
C402
47/25
R402
1K
R408
3.3K
C408
47/25
R392
1K
R599
390(1W)
R598
390(1W)
R457
3.3K
C455
47/25
C435
NC
Q402:A
3
2
8
1
4
Q491
RN1241-A
C456
47/25
R458
3.3K
C428
NC
C429
NC
Q401:B
6
5
7
Q401:A
3
2
8
1
4
R403
220K
P301
P302
D983 C981
NC
C591
103J C592
103J
D591 D592
RL592
5
2
16
3
4
P501
R414
100K
C442
4.7/50
C436
NC
R315
330
R320
2.2K
C319
NC
C320
NC
C323
NC
C324
NC
P915B
P917A
NC
C341
223Z J594
NC
P917C
NC
R952
(1/2W)
2.2
P917D
NC
J593
D951
NC
J591
J592
Q925
NC
C433
103J
C434
103J
C412
47/25R412
1.2K
C411
47/25
P914B
RL450
RL921
C343
223Z J596
NC
R339
330
R340
330
R341
1M
C329
LIST
R342
1M
C330
LIST
P303
C459
103J
C953
4.7/50
+
RL922
R925
10(1/2W)
JL261B
1 2
3 4
D921
RL1N4003
GP104003E
D922
MTZJ33D
Q924
2SA965-Y
D954
MTZJ4.7B
Q493
KRA102M
D491
1SS133
C941
10/50
J103
R953
100K
J101
C925
334J
C919
330/35
C918
1000/35
C918A
NC
J902
NC J900
NC
R903
NC
C912
334J/50V
C911
334J/50V
P917B
NC
C305
152J
C306
152J
C303
47/25
C304
47/25
C441
100/16
R924
560(1/2W)
R455
22K
R456
22K
C415
220/16
C527
47/63
C528
47/63
J102
C534
102J
C532
102J
C531
102J
C533
102J
C535
102J
C536
102J
Q452
DTC123JS
C426 NC C425 NC
E591
E592
D953
1SS133
E593
NC
C930
223Z
R932
330K
R934
100(1/2W)
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
C526
NC
+
C526A
NC
+
C315
220/16
C316
220/16 R352
10
R351
10
R353
10
R354
10
C353
22/50
C354
22/50
JL913B
D571
MTZJ5.1B C583
1/50
C317
LIST
C318
LIST
C321
LIST
C322
LIST
C325
LIST
C326
LIST
C327
LIST
C328
LIST
C331
C332
C405
101K
C406
101K
C409
LIST
C410
LIST
Q403:A
Q403 : NJM2068L-D
3
2
8
1
4
C453
101K
Q403:B
6
57
C454
101K
C457
101K#
C458
101K#
C581
100/16
Q481
TA7291SG
1 2
3 4
5 6 7
8 9
RL591
4
3
61
2
5
R931
3.3K
(1/4W)
R933
22(1/2W)
R904
NC
R905
NC
R901
NC R900 NC
Q922
79M12
3O2
I
1
G
C923
10/50
C922
33/50
C921
223Z
C920
223Z
J901
C926
100/50
J595
NC
J903
P702B
1
2
3
4
5
6 7
8
9
10
11 12
13
P701B
19 15 10
5
JL716B
TO_NADIS-8887
SD-3 : C2
1 2 3
JL711B
3 2 1
R906
NC
JL613A
P705B
1
34
2
P704B
1
34
2
C915
C916
C924
334J
D911
D10XB60H
1
3
4
2
R415
100K
2
6
5
3
9
4
8
1
7
R393
250K
4
19
2
8
3
R409
100K
8
4
9
5
3
6
2
1
7
Q921
78M12
3O
2
G1
I
R919
1(1/2W)
D918A
D918
D3SBA20
Q921A
HEATSINK
4 31
2
R935
D924 GP104003E
RL1N4003
D986
NC
C983
NC
D984
C982
222J
D985
NC
Q402:B
6
5
7
JL918B
D920
RL1N4003
GP104003E
C525
NC
+
C525A
NC
+
R419
3.3K
R420
3.3K
C418
47/25
C451
47/25
C452
47/25
R454
220K
R453
220K C461
47/25
C462
47/25
C417
47/25
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
Q531
R581
5.6K
R583
3.9K
R587
2K
R589
3.3K
Q533
R567
22
C509
10/50
+
R579
100
C511
NC
Q503
R531
18K
R525
(1/2W)
68 R527
(1/2W)
82
C521
10/50
+
Q513
Q515
R547
0.22(5W)
C515
101K
R515
1.5K
C505
220/25
+
C597
NC
C523
020C
Q509
C507 NC R569
22
R545
22K
L501
J691
NC
R555
(1W)
8.2
C517
473J
P597A
NC P597B NC
C513
47/25
+
P511
R535
18K
C595
NC C529
NC
R513
56K
R533
56K
R543
(1/2W)
220
R541
(1/2W)
2.2
R539
(1/2W)
2.2
R591
(1/4W)
2.2
Q501
R505
10
Q529
BL
2SC2458-GR
R549
3.3K
R585
820
Q519
2SA1930
Q517
2SC5171
Q523
R511
5.6K
Q505
Q505, 506 : 2SC2240-GR, -BL
R523
(1/2W)
82
R553
47K
Q527
2SC2229-Y R551
33K
R529
(1/2W)
47
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
Q532
R582
5.6K
R584
3.9K
R588
2K
R590
3.3K
Q534
R568
22
C510
10/50
+
R580
100
C512
NC
Q504
R532
18K
R526
(1/2W)
68 R528
(1/2W)
82
C522 10/50
+
Q514
Q516
R548
0.22(5W)
C516
101K
R516
1.5K
C506
220/25
+
C598
NC
C524
020C
Q510
C508 NC
R570
22
R546
22K
L502
J692
NC
R556
(1W)
8.2
C518
473J
P598A
NC P598B NC
C514
47/25
+
P512
R536
18K
C596
NC C530
NC
R514
56K
R534
56K
R544
(1/2W)
220
R542
(1/2W)
2.2
R540
(1/2W)
2.2
R592
(1/4W)
2.2
Q502
R506
10
Q530 BL
2SC2458-GR
R550
3.3K
R586
820
Q520
2SA1930
Q518
2SC5171
Q522
Q524
R512
5.6K
Q506
R524
(1/2W)
82
R554
47K
Q528
2SC2229-Y
R552
33K
R530
(1/2W)
47
JL917B
F912
J912
J911F911
JL918A
D912
D10XB60H
P919
R921
0.47(1/2W)
P915A
P916A
P914A
8
9
10
11
12
13
14
16
15
18
17
JL917A
C991
104J
R922 0.47(1/2W)
J991
J992
C992
104J
R923
5.6(1/2W)
C995
NC
JL913A
C993
NC
C994
NC
F913
4A125V (NC)
F914
4A125V (NC)
R644
8.2K
R643
8.2K
C648
223Z
P641
WS-CLAMP
P642
WS-CLAMP
JL613B
R641
47
1
52
6
3
Refer to following table about the parts displayed by mark "LIST".
<Note>
NC = No mount of parts.
SD-Z : XY
Location of connected terminal in schematic diagrams.
SD-Z = Schematic diagrams-Z. X = A to H, Y = 1 to 5.
To POWER TRANS.
SD-4 : E1
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
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.
!
NOTE
POWER AMP. L ch
POWER AMP. R ch
U08
AMPLIFIER PC BOARD
U09
TRANS. SEC.
TERMINAL PC BOARD
U10
VOLUME PC BOARD
SELECTOR
NC
Q501-504 : 2SC2240-BL
Q507 - 510, 513, 514 : 2SA949-Y
Q515, 516 : 2SC2229-Y
Q531 - 534 : 2SC1740S-S
R587 :
IDLING ADJUST
R588 :
IDLING ADJUST
Q521
OUT
IN
DISPLAY PCB
NC
NC
NC
U07
HEADPHONE JACK
PC BOARD
NAETC-8882
P503
PHONES
3
2
1
C876
104Z
C874
102J
C875
102J
L855
220M
L853
220M
L854
220M
P504
JL711A
3
2
1
+12V
-12V
+57.6V
+57.6V
-57.6V
-57.6V
0V
0V
+1.2V
+1.2V
-1.2V
-1.2V
-12V
+12V
C317, 318
C321,322,
C325-330
C409, 410
None 101K
MDC MPPTYPE --->
+5.6V
0V
+12V
-12V
-12V
+12V
A
1
2
3
4
5
BCDEFGH

TX-8255
SCHEMATIC DIAGRAMS-1
AMPLIFIER SECTION
DATA
CLK
POFF2
TU_L
TU_R SE1H PROTECT
PROTECT
STB
VOL_UP
SP_A
SP_B
SP_A SP_B DIRECT +12VA
DIRECT
VOL_DN
AMUT
MON-A
MON-B
+12VA
5.6V
-12VA
VOL_DN VOL_UP
STB
AMUT DATA MON-A +12VS MON-B +12VR
CLK
+10S
FLAC2
FLAC1
FLAC1
FLAC2
-VP
SE1H
L2
R2
E
R3
E
E
L3
MTR+
MTR-
MTRG
R
L
R
L
L
VIDEO
TREBLE
BASS
VS
NC
OUT1 VREF
IN1
GND
MOTOR DRIVE
BALANCE
PHONO
EQUALIZER
SEL
STB
DATACL
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
OUT
TAPE 1
IN
TAPE 2
R
L
R
L
R
L
RLGND
T1 REC
P918
BUS
RLGND
+12V
-12V
TU_GND TS_GND
SPEAKERS
R
LL
R
AB
IN2
OUT2
VCC
IN
LINE 1/DVD IN
LINE-2 IN
R
V_GND
RLGND MPUGND
RL1N4003
1SR139-100
D915,D921:
GP104003E
NC
NAAF-8886
MPUGND
To NADG-8876
SD-2 : G3
MICROPROCESSOR PCB
NC
D401-D404 :
1SS133 or 1SS270
Q401-Q402 : NJM2068L-D
C915, 916 :
8200/56
NC
ID+
ID-
2SC5197
2SA1940
+0.6V
-0.6V
-0.6V
-55.8V
-22.8V
+55.8V
+55.8V
+56.3V
+56.3V
-55.7V
0.6V
-O
ID+
ID-
2SC5197
2SA1940
+0.6V
-0.6V
-0.6V
-55.8V
-22.8V
+55.8V +55.8V
+56.3V
+56.3V
-55.7V
+0.6V
-O
NAPS-8889
8A/125V NAPS-8887
VOLUME
NAAF-8888
R413
100K
C424
223Z
R311
39K
R313
100K
R314
100K
R417
1K
R418
1K
R575
220K
C342
223Z
R335
330
R336
330
R337
1M
R338
1M
R344
330
R345
1M
R346
1M
R302
1K
R349
22K
R343
330
R435
220K
R301
1K
C313
10/50
R304
56K
R303
56K
R305
220K
R306
220K
C307
100/10
R312
39K
C312
182J
Q301:B
NJM4565D-X
6
5
7
Q301:A
NJM4565D-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
C309
682J
C310
682J
R307
820
R308
820
R309
470K
R310
470K
R401
1K
C421
223J
C422
223J
C403
47/25
C407
47/25
R404
220K
R405
22K
R406
22K
C392
101K
C391
101K
C404
47/25
R391
1K C416
220/16
C971
223Z
R951
(1/2W)
2.2
C928
100/50
C931
223Z
R491
47K
R492
47K
R436
2.2K
D952
1SS133
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
C423
223Z
C443
NC
R442 10
C401
47/25
R441 10
R461
100K
R462
100K
R451
3.3K
R459
3.3K
R460
3.3K
R452
3.3K
D450
P916B
D981
NC
D982
NC
Q492
RN1241-A Q592
DTC123JS
Q591
DTC123JS
R411
1.2K
R595
10(1/2W)
C402
47/25
R402
1K
R408
3.3K
C408
47/25
R392
1K
R599
390(1W)
R598
390(1W)
R457
3.3K
C455
47/25
C435
NC
Q402:A
3
2
8
1
4
Q491
RN1241-A
C456
47/25
R458
3.3K
C428
NC
C429
NC
Q401:B
6
5
7
Q401:A
3
2
8
1
4
R403
220K
P301
P302
D983 C981
NC
C591
103J C592
103J
D591 D592
RL592
5
2
16
3
4
P501
R414
100K
C442
4.7/50
C436
NC
R315
330
R320
2.2K
C319
NC
C320
NC
C323
NC
C324
NC
P915B
P917A
NC
C341
223Z J594
NC
P917C
NC
R952
(1/2W)
2.2
P917D
NC
J593
D951
NC
J591
J592
Q925
NC
C433
103J
C434
103J
C412
47/25R412
1.2K
C411
47/25
P914B
RL450
RL921
C343
223Z J596
NC
R339
330
R340
330
R341
1M
C329
LIST
R342
1M
C330
LIST
P303
C459
103J
C953
4.7/50
+
RL922
R925
10(1/2W)
JL261B
1 2
3 4
D921
RL1N4003
GP104003E
D922
MTZJ33D
Q924
2SA965-Y
D954
MTZJ4.7B
Q493
KRA102M
D491
1SS133
C941
10/50
J103
R953
100K
J101
C925
334J
C919
330/35
C918
1000/35
C918A
NC
J902
NC J900
NC
R903
NC
C912
334J/50V
C911
334J/50V
P917B
NC
C305
152J
C306
152J
C303
47/25
C304
47/25
C441
100/16
R924
560(1/2W)
R455
22K
R456
22K
C415
220/16
C527
47/63
C528
47/63
J102
C534
102J
C532
102J
C531
102J
C533
102J
C535
102J
C536
102J
Q452
DTC123JS
C426 NC C425 NC
E591
E592
D953
1SS133
E593
NC
C930
223Z
R932
330K
R934
100(1/2W)
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
C526
NC
+
C526A
NC
+
C315
220/16
C316
220/16 R352
10
R351
10
R353
10
R354
10
C353
22/50
C354
22/50
JL913B
D571
MTZJ5.1B C583
1/50
C317
LIST
C318
LIST
C321
LIST
C322
LIST
C325
LIST
C326
LIST
C327
LIST
C328
LIST
C331
C332
C405
101K
C406
101K
C409
LIST
C410
LIST
Q403:A
Q403 : NJM2068L-D
3
2
8
1
4
C453
101K
Q403:B
6
57
C454
101K
C457
101K#
C458
101K#
C581
100/16
Q481
TA7291SG
1 2
3 4
5 6 7
8 9
RL591
4
3
61
2
5
R931
3.3K
(1/4W)
R933
22(1/2W)
R904
NC
R905
NC
R901
NC R900 NC
Q922
79M12
3O2
I
1
G
C923
10/50
C922
33/50
C921
223Z
C920
223Z
J901
C926
100/50
J595
NC
J903
P702B
1
2
3
4
5
6 7
8
9
10
11 12
13
P701B
19 15 10
5
JL716B
TO_NADIS-8887
SD-3 : C2
1 2 3
JL711B
3 2 1
R906
NC
JL613A
P705B
1
34
2
P704B
1
34
2
C915
C916
C924
334J
D911
D10XB60H
1
3
4
2
R415
100K
2
6
5
3
9
4
8
1
7
R393
250K
4
19
2
8
3
R409
100K
8
4
9
5
3
6
2
1
7
Q921
78M12
3O
2
G1
I
R919
1(1/2W)
D918A
D918
D3SBA20
Q921A
HEATSINK
4 31
2
R935
D924 GP104003E
RL1N4003
D986
NC
C983
NC
D984
C982
222J
D985
NC
Q402:B
6
5
7
JL918B
D920
RL1N4003
GP104003E
C525
NC
+
C525A
NC
+
R419
3.3K
R420
3.3K
C418
47/25
C451
47/25
C452
47/25
R454
220K
R453
220K C461
47/25
C462
47/25
C417
47/25
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
Q531
R581
5.6K
R583
3.9K
R587
2K
R589
3.3K
Q533
R567
22
C509
10/50
+
R579
100
C511
NC
Q503
R531
18K
R525
(1/2W)
68 R527
(1/2W)
82
C521
10/50
+
Q513
Q515
R547
0.22(5W)
C515
101K
R515
1.5K
C505
220/25
+
C597
NC
C523
020C
Q509
C507 NC R569
22
R545
22K
L501
J691
NC
R555
(1W)
8.2
C517
473J
P597A
NC P597B NC
C513
47/25
+
P511
R535
18K
C595
NC C529
NC
R513
56K
R533
56K
R543
(1/2W)
220
R541
(1/2W)
2.2
R539
(1/2W)
2.2
R591
(1/4W)
2.2
Q501
R505
10
Q529
BL
2SC2458-GR
R549
3.3K
R585
820
Q519
2SA1930
Q517
2SC5171
Q523
R511
5.6K
Q505
Q505, 506 : 2SC2240-GR, -BL
R523
(1/2W)
82
R553
47K
Q527
2SC2229-Y R551
33K
R529
(1/2W)
47
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
Q532
R582
5.6K
R584
3.9K
R588
2K
R590
3.3K
Q534
R568
22
C510
10/50
+
R580
100
C512
NC
Q504
R532
18K
R526
(1/2W)
68 R528
(1/2W)
82
C522 10/50
+
Q514
Q516
R548
0.22(5W)
C516
101K
R516
1.5K
C506
220/25
+
C598
NC
C524
020C
Q510
C508 NC
R570
22
R546
22K
L502
J692
NC
R556
(1W)
8.2
C518
473J
P598A
NC P598B NC
C514
47/25
+
P512
R536
18K
C596
NC C530
NC
R514
56K
R534
56K
R544
(1/2W)
220
R542
(1/2W)
2.2
R540
(1/2W)
2.2
R592
(1/4W)
2.2
Q502
R506
10
Q530 BL
2SC2458-GR
R550
3.3K
R586
820
Q520
2SA1930
Q518
2SC5171
Q522
Q524
R512
5.6K
Q506
R524
(1/2W)
82
R554
47K
Q528
2SC2229-Y
R552
33K
R530
(1/2W)
47
JL917B
F912
J912
J911F911
JL918A
D912
D10XB60H
P919
R921
0.47(1/2W)
P915A
P916A
P914A
8
9
10
11
12
13
14
16
15
18
17
JL917A
C991
104J
R922 0.47(1/2W)
J991
J992
C992
104J
R923
5.6(1/2W)
C995
NC
JL913A
C993
NC
C994
NC
F913
4A125V (NC)
F914
4A125V (NC)
R644
8.2K
R643
8.2K
C648
223Z
P641
WS-CLAMP
P642
WS-CLAMP
JL613B
R641
47
1
52
6
3
Refer to following table about the parts displayed by mark "LIST".
<Note>
NC = No mount of parts.
SD-Z : XY
Location of connected terminal in schematic diagrams.
SD-Z = Schematic diagrams-Z. X = A to H, Y = 1 to 5.
To POWER TRANS.
SD-4 : E1
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
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.
!
NOTE
POWER AMP. L ch
POWER AMP. R ch
U08
AMPLIFIER PC BOARD
U09
TRANS. SEC.
TERMINAL PC BOARD
U10
VOLUME PC BOARD
SELECTOR
NC
Q501-504 : 2SC2240-BL
Q507 - 510, 513, 514 : 2SA949-Y
Q515, 516 : 2SC2229-Y
Q531 - 534 : 2SC1740S-S
R587 :
IDLING ADJUST
R588 :
IDLING ADJUST
Q521
OUT
IN
DISPLAY PCB
NC
NC
NC
U07
HEADPHONE JACK
PC BOARD
NAETC-8882
P503
PHONES
3
2
1
C876
104Z
C874
102J
C875
102J
L855
220M
L853
220M
L854
220M
P504
JL711A
3
2
1
+12V
-12V
+57.6V
+57.6V
-57.6V
-57.6V
0V
0V
+1.2V
+1.2V
-1.2V
-1.2V
-12V
+12V
C317, 318
C321,322,
C325-330
C409, 410
None 101K
MDC MPPTYPE --->
+5.6V
0V
+12V
-12V
-12V
+12V
A
1
2
3
4
5
BCDEFGH

TX-8255
SCHEMATIC DIAGRAMS-2
MICROPROCESSOR SECTION
TX-8255
U01
MICROPROCESSOR PC BOARD
+5V
BAND
INT1
INT2
INT3
SPRLB
CNVSS
FEPM
FCE
RESET
SYSOUT
LEDZONE2
LEDPURE
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
+5VTU
SYSIN
MPUGND
RESET
FCLK
FBUSY
FRXD
FTXD
CNVSS
+5VMPU
APOWER
PLLSDA
TUNED
STEREO
RDSSIG
TUR
TUL
+9V_TU
PLLCLK
RDSDAT
MPUGND
+10S
Z2SELDAT
Z2SELCLK
PLLSDA
TUNED
SIRIUSRX
POFF2
+12VA
SRRST
Z2SELLAT
+5VCPU
XMREQERR
TUXMSELB
TUXMSELA
TUXMSELA
KEYINT0
LEDSTBY
RDSSIG
RDSDAT
PLLCLK
SYSIN
+5VMPU
SYSIN
KEY1
KEY2
KEY3
SEC1H
PROTECT
VOLH
VSWB
XMDACRST XMCOMSEL SELDAT SELCLK SELSTB TUXMSELB
XMRST
XMSRTXD
FBUSY
FCLK
FRXD
AMUT
KEY0
VSWA
FTXD
XMSRRXD
VOLOUT1
VOLOUT2
APOWER
THERMAL
STEREO
FLDCLK
FLDSDO
FLDCS
FLDRST
KEYINT1
KEYINT2
KEYINT3
POFF
+12VS
RLGND
POFF
APOWER
SRRST
XMREQERR
XMDACRST
XMCOMSEL
XMSRTXD
+5V_XM
TS_GND
XMSRRXD
XMRST
SIRIUSRX
SIRIUSTX
SR_L_OUT
SR_R_OUT
XM_L_OUT
XM_R_OUT
GND_A
+12V
-12V
-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
+5VTU
THERMAL
MPUGND
IRIN
IROUT
SIRIUSTX
R608 None 220
None 220 R699
None
NoneR617
None
None
33k
4.7kR720
None
None
0
0R714
R713
10k
10k
None
NoneR716
R715
R718
10k
10kR717
56k
33kR719
MPPMDC
RI
IR IN
NADG-8876
TO TUNER UNIT
DISPLAY PCB
IR OUT
(VX)
(VR)
TO FLASH WRITER
NAETC-8878
To NAAF-8886
SD-1 : C5
R615 47K
R698 0
R677 0
R676 0
R675 0
R662 0
R661 0
R660 0
R657 0
R656 0
R650 0
R646 0
R642 0
R641 0
R640 0
R616 NC
Q706
78M56
3O
2
G
1
I
Q601
M30622MWP-379FP
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
99 : AVCC
100
1 2 3 4 5 6 7 8 9
10 11 12 RESET 13 XOUT 14 VSS 15 XIN 16 VCC1 17 18 19 20 21 22 23 24 25 26 27 28 29 30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57 58 59 60
61 62
63
64 65 66 67
68
69
70 71
72 73 74
75
76 77
78
79
80
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
Q711
S-812C53AUA
1G
3O2
I
Q701
S-812C56AUA-C3K
2I
1G
3
O
P708
R734
LIST
R700
0
R704
10K
R702 10K
Q712
TC74HC4052AF
10Y
22Y
3Y_COM
43Y
51Y
6INH
7Vee
8GND 9
B
10
A
11
3X
12
0X
13
X_COM
14
1X
15
2X
16
Vcc
P707
1
2
3
P705
9
8
7
6
5
4
3
2
1
P704A
1
2
3
4
5
6
7
8
9
10
11
12
13
L702
022K
L701
470M
C712
100/16
+
C724
100/16
+
C725
100/16
+
C709
100/16
+
C703
100/16
+
C702
100/16
+
C715
100/16
+
C710
470/10
+
R699
220
D704
R606 NC
R605 NC
R604 NC
R729 1M
R671 220
R670 220
C727 NC
C726NC
R697
47K
R626 47
D702
1SS355
D713
R719
R717
R715
R713
R720
R718
R716
R714
C609 104Z
R731
1.5K
R711
(1/4W)
33
R850
10K
R659 NC
D605
NC
D707 D706 D705
D709
RL1N4003
D710
RL1N4003
C729
104Z
C728
104Z
C719
104Z
R723
47K
R724
47K
R725 47K
R726 47K
R622 220
R624 220
R730
1.5K
D712
UDZS5.1B
D711
UDZS5.1B
D604
UDZS5.1B
R607 NC
R710
10(1/2W)
C711
104Z
C701
104Z
R678
220K
R617
LIST
R727
220
R728
220
R722
47K
R721
47K
C714
10/50
+
R712
(1/2W)
0.22
Q710
2SA1930
2
C606
104Z
D603
1SS355
X601
6.000MHz
C716
101J
C708
474K
R701
1K
R667
47K
R666 220
C603
104Z
C602
104Z
D708
J702
J701
C720
NC
C718
100/16
C717
3.3/50
Q705
RN2402
2
1
3
Q703
RN1404
3
1
2
D703
D701
1SS355
C706
10/50
+
C704
DX-5R5L224
+
R705
2.2K
Q602
RN1404
1
23
R696
47K
R610 10K
R608
220
R612
47K
R613
1M
R611
NC
R614 10K
R618 220 R619 220 R620 220 R621 220
R625 220
R629 10K
R630 10K
R639 47
R638 220
R637 47
R636 47
R635 47
R634 47
R633 47
R631 10K
R644 47
R645 47
R643 NC
R647 10K
R648 10K
R649 10K
R651
10K
R652 10K
R653 10K
R654 220
R655 220
R658 1K
R664 220
R665 220
R674 10K
R673 10K
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
C604 101J
C605 101J
R663 47
C607 104Z
C610 104Z
C611 104Z
C612 104Z
C613 102K
C614 102K
C615 102K
C616 102K
C617 102K C618 102K
C619 102K
C620 102K
C621
104Z
C622 104Z
R609 10K
R601 220
R602 220 R603 NC
C623
4.7/50
+
Q603
RN2402
1
23
D602
1SS355
D601
1SS355
R733
10(1W)
JL911B
1
2
3
4
5
6
P211B
1
2
3
4
5
6
7
8
9
10
11
P212B
1
2
3
4
5
6
7
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
R709
100
P706
22
24
21
2
10
1
R628 NC
R627 NC
R623 NC
MAIN MICROPROCESSOR
To NADIS-8877
SD-3 : D2
Refer to following table about the parts displayed by mark "LIST".
<Note>
NC = No mount of parts.
SD-Z : XY
Location of connected terminal in schematic diagrams.
SD-Z = Schematic diagrams-Z. X = A to H, Y = 1 to 5.
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
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.
!
NOTE
D705 - 707 : 1SS355
SPRLA : 50
NU : 49
NU : 48 PLLSDA
PLLCLK
FCE
FEPM
XMRST
XMSRTXD : 35
FBUSY : 34
FCLK : 33
FRXD : 32
FTXD : 31
XMSRRXD
81 : NU
82 : LEDZONE2
83 : LUDPURE
KEYINT0
LEDSTBY
KEY1
KEY2
KEY3
FLDCLK
FLDSDO
FLDCS
FLDRST
KEYINT1
KEYINT2
KEYINT3
KEY0
Z2SELDAT
Z2SELCLK Z2SELLAT
VSWB
VSWA
CNVSS RDSDAT
SIRIUSRX XMREQERR TUXMSELA RDSSIG XMDACRST XMCOMSEL SELDAT SELCLK SELSTB TUXMSELB SIRIUSTX
REMIN
TUNED
STEREO
BAND
INT1 INT2
INT3
SYSOUT
SYSIN
PROTECT
VOLH
THERMAL
SEC1H
SPRLB
DIRECT
POFF2
VOLOUT1
VOLOUT2
APOWER
U03
THERMAL SENSOR
PC BOARD
LIST LIST LIST LIST
LIST
LIST
LIST
LIST
TEMPERATURE SENSOR
NC
TYPE --->
R734 560 270
NC
NC
NC
AMUT
NU
NU : No use
NU NU NU NU
VCC2
NU
VSS
NU
NU
NU
NU
NU
NU
NU
POFF
NU
NU
NU
NU
AVSS
To NAPS-8880
SD-4 : D3
+5V
+5V
+5.6V
+5V
POWER SUPPLY PCB
AMPLIFIER PCB
+19.5V
0V
+5.6V
+21V
+11.9V
+2.7V
+15.3V
+5.7V
+5V
+5V
A
1
2
3
4
5
BCDEFGH

TX-8255
SCHEMATIC DIAGRAMS-2
MICROPROCESSOR SECTION
TX-8255
U01
MICROPROCESSOR PC BOARD
+5V
BAND
INT1
INT2
INT3
SPRLB
CNVSS
FEPM
FCE
RESET
SYSOUT
LEDZONE2
LEDPURE
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
+5VTU
SYSIN
MPUGND
RESET
FCLK
FBUSY
FRXD
FTXD
CNVSS
+5VMPU
APOWER
PLLSDA
TUNED
STEREO
RDSSIG
TUR
TUL
+9V_TU
PLLCLK
RDSDAT
MPUGND
+10S
Z2SELDAT
Z2SELCLK
PLLSDA
TUNED
SIRIUSRX
POFF2
+12VA
SRRST
Z2SELLAT
+5VCPU
XMREQERR
TUXMSELB
TUXMSELA
TUXMSELA
KEYINT0
LEDSTBY
RDSSIG
RDSDAT
PLLCLK
SYSIN
+5VMPU
SYSIN
KEY1
KEY2
KEY3
SEC1H
PROTECT
VOLH
VSWB
XMDACRST XMCOMSEL SELDAT SELCLK SELSTB TUXMSELB
XMRST
XMSRTXD
FBUSY
FCLK
FRXD
AMUT
KEY0
VSWA
FTXD
XMSRRXD
VOLOUT1
VOLOUT2
APOWER
THERMAL
STEREO
FLDCLK
FLDSDO
FLDCS
FLDRST
KEYINT1
KEYINT2
KEYINT3
POFF
+12VS
RLGND
POFF
APOWER
SRRST
XMREQERR
XMDACRST
XMCOMSEL
XMSRTXD
+5V_XM
TS_GND
XMSRRXD
XMRST
SIRIUSRX
SIRIUSTX
SR_L_OUT
SR_R_OUT
XM_L_OUT
XM_R_OUT
GND_A
+12V
-12V
-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
+5VTU
THERMAL
MPUGND
IRIN
IROUT
SIRIUSTX
R608 None 220
None 220 R699
None
NoneR617
None
None
33k
4.7kR720
None
None
0
0R714
R713
10k
10k
None
NoneR716
R715
R718
10k
10kR717
56k
33kR719
MPPMDC
RI
IR IN
NADG-8876
TO TUNER UNIT
DISPLAY PCB
IR OUT
(VX)
(VR)
TO FLASH WRITER
NAETC-8878
To NAAF-8886
SD-1 : C5
R615 47K
R698 0
R677 0
R676 0
R675 0
R662 0
R661 0
R660 0
R657 0
R656 0
R650 0
R646 0
R642 0
R641 0
R640 0
R616 NC
Q706
78M56
3O
2
G
1
I
Q601
M30622MWP-379FP
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
99 : AVCC
100
1 2 3 4 5 6 7 8 9
10 11 12 RESET 13 XOUT 14 VSS 15 XIN 16 VCC1 17 18 19 20 21 22 23 24 25 26 27 28 29 30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57 58 59 60
61 62
63
64 65 66 67
68
69
70 71
72 73 74
75
76 77
78
79
80
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
Q711
S-812C53AUA
1G
3O2
I
Q701
S-812C56AUA-C3K
2I
1G
3
O
P708
R734
LIST
R700
0
R704
10K
R702 10K
Q712
TC74HC4052AF
10Y
22Y
3Y_COM
43Y
51Y
6INH
7Vee
8GND 9
B
10
A
11
3X
12
0X
13
X_COM
14
1X
15
2X
16
Vcc
P707
1
2
3
P705
9
8
7
6
5
4
3
2
1
P704A
1
2
3
4
5
6
7
8
9
10
11
12
13
L702
022K
L701
470M
C712
100/16
+
C724
100/16
+
C725
100/16
+
C709
100/16
+
C703
100/16
+
C702
100/16
+
C715
100/16
+
C710
470/10
+
R699
220
D704
R606 NC
R605 NC
R604 NC
R729 1M
R671 220
R670 220
C727 NC
C726NC
R697
47K
R626 47
D702
1SS355
D713
R719
R717
R715
R713
R720
R718
R716
R714
C609 104Z
R731
1.5K
R711
(1/4W)
33
R850
10K
R659 NC
D605
NC
D707 D706 D705
D709
RL1N4003
D710
RL1N4003
C729
104Z
C728
104Z
C719
104Z
R723
47K
R724
47K
R725 47K
R726 47K
R622 220
R624 220
R730
1.5K
D712
UDZS5.1B
D711
UDZS5.1B
D604
UDZS5.1B
R607 NC
R710
10(1/2W)
C711
104Z
C701
104Z
R678
220K
R617
LIST
R727
220
R728
220
R722
47K
R721
47K
C714
10/50
+
R712
(1/2W)
0.22
Q710
2SA1930
2
C606
104Z
D603
1SS355
X601
6.000MHz
C716
101J
C708
474K
R701
1K
R667
47K
R666 220
C603
104Z
C602
104Z
D708
J702
J701
C720
NC
C718
100/16
C717
3.3/50
Q705
RN2402
2
1
3
Q703
RN1404
3
1
2
D703
D701
1SS355
C706
10/50
+
C704
DX-5R5L224
+
R705
2.2K
Q602
RN1404
1
23
R696
47K
R610 10K
R608
220
R612
47K
R613
1M
R611
NC
R614 10K
R618 220 R619 220 R620 220 R621 220
R625 220
R629 10K
R630 10K
R639 47
R638 220
R637 47
R636 47
R635 47
R634 47
R633 47
R631 10K
R644 47
R645 47
R643 NC
R647 10K
R648 10K
R649 10K
R651
10K
R652 10K
R653 10K
R654 220
R655 220
R658 1K
R664 220
R665 220
R674 10K
R673 10K
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
C604 101J
C605 101J
R663 47
C607 104Z
C610 104Z
C611 104Z
C612 104Z
C613 102K
C614 102K
C615 102K
C616 102K
C617 102K C618 102K
C619 102K
C620 102K
C621
104Z
C622 104Z
R609 10K
R601 220
R602 220 R603 NC
C623
4.7/50
+
Q603
RN2402
1
23
D602
1SS355
D601
1SS355
R733
10(1W)
JL911B
1
2
3
4
5
6
P211B
1
2
3
4
5
6
7
8
9
10
11
P212B
1
2
3
4
5
6
7
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
R709
100
P706
22
24
21
2
10
1
R628 NC
R627 NC
R623 NC
MAIN MICROPROCESSOR
To NADIS-8877
SD-3 : D2
Refer to following table about the parts displayed by mark "LIST".
<Note>
NC = No mount of parts.
SD-Z : XY
Location of connected terminal in schematic diagrams.
SD-Z = Schematic diagrams-Z. X = A to H, Y = 1 to 5.
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
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.
!
NOTE
D705 - 707 : 1SS355
SPRLA : 50
NU : 49
NU : 48 PLLSDA
PLLCLK
FCE
FEPM
XMRST
XMSRTXD : 35
FBUSY : 34
FCLK : 33
FRXD : 32
FTXD : 31
XMSRRXD
81 : NU
82 : LEDZONE2
83 : LUDPURE
KEYINT0
LEDSTBY
KEY1
KEY2
KEY3
FLDCLK
FLDSDO
FLDCS
FLDRST
KEYINT1
KEYINT2
KEYINT3
KEY0
Z2SELDAT
Z2SELCLK Z2SELLAT
VSWB
VSWA
CNVSS RDSDAT
SIRIUSRX XMREQERR TUXMSELA RDSSIG XMDACRST XMCOMSEL SELDAT SELCLK SELSTB TUXMSELB SIRIUSTX
REMIN
TUNED
STEREO
BAND
INT1 INT2
INT3
SYSOUT
SYSIN
PROTECT
VOLH
THERMAL
SEC1H
SPRLB
DIRECT
POFF2
VOLOUT1
VOLOUT2
APOWER
U03
THERMAL SENSOR
PC BOARD
LIST LIST LIST LIST
LIST
LIST
LIST
LIST
TEMPERATURE SENSOR
NC
TYPE --->
R734 560 270
NC
NC
NC
AMUT
NU
NU : No use
NU NU NU NU
VCC2
NU
VSS
NU
NU
NU
NU
NU
NU
NU
POFF
NU
NU
NU
NU
AVSS
To NAPS-8880
SD-4 : D3
+5V
+5V
+5.6V
+5V
POWER SUPPLY PCB
AMPLIFIER PCB
+19.5V
0V
+5.6V
+21V
+11.9V
+2.7V
+15.3V
+5.7V
+5V
+5V
A
1
2
3
4
5
BCDEFGH

TX-8255
SCHEMATIC DIAGRAMS-2
MICROPROCESSOR SECTION
U01
MICROPROCESSOR PC BOARD
+5V
BAND
INT1
INT2
INT3
SPRLB
CNVSS
FEPM
FCE
RESET
SYSOUT
LEDZONE2
LEDPURE
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
+5VTU
SYSIN
MPUGND
RESET
FCLK
FBUSY
FRXD
FTXD
CNVSS
+5VMPU
APOWER
PLLSDA
TUNED
STEREO
RDSSIG
TUR
TUL
+9V_TU
PLLCLK
RDSDAT
MPUGND
+10S
Z2SELDAT
Z2SELCLK
PLLSDA
TUNED
SIRIUSRX
POFF2
+12VA
SRRST
Z2SELLAT
+5VCPU
XMREQERR
TUXMSELB
TUXMSELA
TUXMSELA
KEYINT0
LEDSTBY
RDSSIG
RDSDAT
PLLCLK
SYSIN
+5VMPU
SYSIN
KEY1
KEY2
KEY3
SEC1H
PROTECT
VOLH
VSWB
XMDACRST XMCOMSEL SELDAT SELCLK SELSTB TUXMSELB
XMRST
XMSRTXD
FBUSY
FCLK
FRXD
AMUT
KEY0
VSWA
FTXD
XMSRRXD
VOLOUT1
VOLOUT2
APOWER
THERMAL
STEREO
FLDCLK
FLDSDO
FLDCS
FLDRST
KEYINT1
KEYINT2
KEYINT3
POFF
+12VS
RLGND
POFF
APOWER
SRRST
XMREQERR
XMDACRST
XMCOMSEL
XMSRTXD
+5V_XM
TS_GND
XMSRRXD
XMRST
SIRIUSRX
SIRIUSTX
SR_L_OUT
SR_R_OUT
XM_L_OUT
XM_R_OUT
GND_A
+12V
-12V
-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
+5VTU
THERMAL
MPUGND
IRIN
IROUT
SIRIUSTX
R608 None 220
None 220 R699
None
NoneR617
None
None
33k
4.7kR720
None
None
0
0R714
R713
10k
10k
None
NoneR716
R715
R718
10k
10kR717
56k
33kR719
MPPMDC
RI
IR IN
NADG-8876
TO TUNER UNIT
DISPLAY PCB
IR OUT
(VX)
(VR)
TO FLASH WRITER
NAETC-8878
To NAAF-8886
SD-1 : C5
R615 47K
R698 0
R677 0
R676 0
R675 0
R662 0
R661 0
R660 0
R657 0
R656 0
R650 0
R646 0
R642 0
R641 0
R640 0
R616 NC
Q706
78M56
3O
2
G
1
I
Q601
M30622MWP-379FP
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
99 : AVCC
100
1 2 3 4 5 6 7 8 9
10 11 12 RESET 13 XOUT 14 VSS 15 XIN 16 VCC1 17 18 19 20 21 22 23 24 25 26 27 28 29 30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57 58 59 60
61 62
63
64 65 66 67
68
69
70 71
72 73 74
75
76 77
78
79
80
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
Q711
S-812C53AUA
1G
3O2
I
Q701
S-812C56AUA-C3K
2I
1G
3
O
P708
R734
LIST
R700
0
R704
10K
R702 10K
Q712
TC74HC4052AF
10Y
22Y
3Y_COM
43Y
51Y
6INH
7Vee
8GND 9
B
10
A
11
3X
12
0X
13
X_COM
14
1X
15
2X
16
Vcc
P707
1
2
3
P705
9
8
7
6
5
4
3
2
1
P704A
1
2
3
4
5
6
7
8
9
10
11
12
13
L702
022K
L701
470M
C712
100/16
+
C724
100/16
+
C725
100/16
+
C709
100/16
+
C703
100/16
+
C702
100/16
+
C715
100/16
+
C710
470/10
+
R699
220
D704
R606 NC
R605 NC
R604 NC
R729 1M
R671 220
R670 220
C727 NC
C726NC
R697
47K
R626 47
D702
1SS355
D713
R719
R717
R715
R713
R720
R718
R716
R714
C609 104Z
R731
1.5K
R711
(1/4W)
33
R850
10K
R659 NC
D605
NC
D707 D706 D705
D709
RL1N4003
D710
RL1N4003
C729
104Z
C728
104Z
C719
104Z
R723
47K
R724
47K
R725 47K
R726 47K
R622 220
R624 220
R730
1.5K
D712
UDZS5.1B
D711
UDZS5.1B
D604
UDZS5.1B
R607 NC
R710
10(1/2W)
C711
104Z
C701
104Z
R678
220K
R617
LIST
R727
220
R728
220
R722
47K
R721
47K
C714
10/50
+
R712
(1/2W)
0.22
Q710
2SA1930
2
C606
104Z
D603
1SS355
X601
6.000MHz
C716
101J
C708
474K
R701
1K
R667
47K
R666 220
C603
104Z
C602
104Z
D708
J702
J701
C720
NC
C718
100/16
C717
3.3/50
Q705
RN2402
2
1
3
Q703
RN1404
3
1
2
D703
D701
1SS355
C706
10/50
+
C704
DX-5R5L224
+
R705
2.2K
Q602
RN1404
1
23
R696
47K
R610 10K
R608
220
R612
47K
R613
1M
R611
NC
R614 10K
R618 220 R619 220 R620 220 R621 220
R625 220
R629 10K
R630 10K
R639 47
R638 220
R637 47
R636 47
R635 47
R634 47
R633 47
R631 10K
R644 47
R645 47
R643 NC
R647 10K
R648 10K
R649 10K
R651
10K
R652 10K
R653 10K
R654 220
R655 220
R658 1K
R664 220
R665 220
R674 10K
R673 10K
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
C604 101J
C605 101J
R663 47
C607 104Z
C610 104Z
C611 104Z
C612 104Z
C613 102K
C614 102K
C615 102K
C616 102K
C617 102K C618 102K
C619 102K
C620 102K
C621
104Z
C622 104Z
R609 10K
R601 220
R602 220 R603 NC
C623
4.7/50
+
Q603
RN2402
1
23
D602
1SS355
D601
1SS355
R733
10(1W)
JL911B
1
2
3
4
5
6
P211B
1
2
3
4
5
6
7
8
9
10
11
P212B
1
2
3
4
5
6
7
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
R709
100
P706
22
24
21
2
10
1
R628 NC
R627 NC
R623 NC
MAIN MICROPROCESSOR
To NADIS-8877
SD-3 : D2
Refer to following table about the parts displayed by mark "LIST".
<Note>
NC = No mount of parts.
SD-Z : XY
Location of connected terminal in schematic diagrams.
SD-Z = Schematic diagrams-Z. X = A to H, Y = 1 to 5.
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
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.
!
NOTE
D705 - 707 : 1SS355
SPRLA : 50
NU : 49
NU : 48 PLLSDA
PLLCLK
FCE
FEPM
XMRST
XMSRTXD : 35
FBUSY : 34
FCLK : 33
FRXD : 32
FTXD : 31
XMSRRXD
81 : NU
82 : LEDZONE2
83 : LUDPURE
KEYINT0
LEDSTBY
KEY1
KEY2
KEY3
FLDCLK
FLDSDO
FLDCS
FLDRST
KEYINT1
KEYINT2
KEYINT3
KEY0
Z2SELDAT
Z2SELCLK Z2SELLAT
VSWB
VSWA
CNVSS RDSDAT
SIRIUSRX XMREQERR TUXMSELA RDSSIG XMDACRST XMCOMSEL SELDAT SELCLK SELSTB TUXMSELB SIRIUSTX
REMIN
TUNED
STEREO
BAND
INT1 INT2
INT3
SYSOUT
SYSIN
PROTECT
VOLH
THERMAL
SEC1H
SPRLB
DIRECT
POFF2
VOLOUT1
VOLOUT2
APOWER
U03
THERMAL SENSOR
PC BOARD
LIST LIST LIST LIST
LIST
LIST
LIST
LIST
TEMPERATURE SENSOR
NC
TYPE --->
R734 560 270
NC
NC
NC
AMUT
NU
NU : No use
NU NU NU NU
VCC2
NU
VSS
NU
NU
NU
NU
NU
NU
NU
POFF
NU
NU
NU
NU
AVSS
To NAPS-8880
SD-4 : D3
+5V
+5V
+5.6V
+5V
POWER SUPPLY PCB
AMPLIFIER PCB
+19.5V
0V
+5.6V
+21V
+11.9V
+2.7V
+15.3V
+5.7V
+5V
+5V
A
1
2
3
4
5
BCDEFGH

TX-8255
SCHEMATIC DIAGRAMS-3
DISPLAY SECTION
TX-8255
<Note>
NC = No mount of parts.
SD-Z : XY
Location of connected terminal in schematic diagrams.
SD-Z = Schematic diagrams-Z. X = A to H, Y = 1 to 5.
+4.9V
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
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.
!
NOTE
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
TUNING
MODE
ON/
STANDBY
TUNING DOWN
TUNING UP
DISPLAY
SPEAKERS
A
SPEAKERS
B
6 PQR
6 MNO
4 JKL
3 GHI
2 DEF
1 ABC
DIRECT
TUNING
DIMMER
/ SACN
CHARACTER
RT/PTY/TP
0_/
AM
FM
TAPE 1
TAPE 2
MONITOR
LINE 2
LINE 1
/ DVD
To NAAF-8886
SD-1 : D5
NADIS-8877
9 YZ-
8 VWX
7 STU PHONO
CD
NC
To NADG-8876
SD-2 : E5
C852 NC
L852
022K
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
49
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
64
64 : DIG4
1DIG03 2DIG02 3DIG01 4DIG00 5_RESET
6_CS
7SCK
8SDATA
9P1
10 P0
11 VCC1 12 XOUT
13 XIN
14 VSS 15 SEG35 16 SEG34
17
SEG33 : 17 18
SEG32 : 18 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 : 31
32
SEG19 : 32
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
2
1
3
S880
S881
S858
S857
S856S864
S865
S866
S867
S875
S874
S873
S872
S882
S851
S859
S852
S868
S876
S877 S869 S861 S853
S860
R867
2.2K
JL716B
1
2
3
C866
100/16
R886
220
D851
MTZJ8.2C
C870
223Z C869 223Z
C868 223Z
C867
223Z
C865
33/50
+
R885 220
Q852
16-BT-128GNK
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
D853
SLI-343URC-TE7
C851
NC
P715B
24
20
15
10
5
1
R891
2.2K
Q854
RN1441
R887
100
C872
NC
C871
102J
R888
1K
L857
470M
R854
3.9K
R861
3.9K
R875
3.9K
R889
12K
C873
100/16
+
U851
S854
S862
S878
S879
S883
S863 S855
S870
R892
3.9K
S884
D854
SIR-34ST3F
D852
SEL2E10C
R890
100
FL DRIVER
FL TUBE
U02
DISPLAY PC BOARD
NC
STANDBY
MICROPROCESSOR PCB
AMPLIFIER PCB
NC
+5V
+4.9V
+5V
+5V +5V
-30.7V
-30.7V
A
1
2
3
4
BCDE

TX-8255
SCHEMATIC DIAGRAMS-4
POWER SUPPLY SECTION
TX-8255
Refer to following table about the parts displayed by mark "LIST".
AGAINST FIRE HAZARD, REPLACE
VA
FOR CONTINUED PROTECTION
AND RATING INDICATED.
ONLY WITH FUSE OF SAME TYPE
CAUTION
ATTENTION
ET CALIBRATION COMME INDIQUE.
D'INCENDIE, REMPLACER UNIQUEMENT
PERMANENTE CONTRE LES RISQUES
AFIN D'ASSURER UNE PROTECTION
PAR UN FUSIBLE DE MEME TYPE
VA
E LENT.POUR UNE PROTECTION PERMANENTE,N'UTILISER
INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.
QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST
CE SYMBOLE INDIQUE QUE LE FUSIBLE UTLISE EST
FOR CONTINUED PROTECTION AGAINST FIRE
RATING REFER TO THE MARKING ADJACENT TO THE SYMBOL.
HAZARD,REPLACE WITH SAME TYPE FUSE. FOR FUSE
THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
THAT THE FUSE USED IS SLOW OPERATING TYPE
<Note>
NC = No mount of parts.
SD-Z : XY
Location of connected terminal in schematic diagrams.
SD-Z = Schematic diagrams-Z. X = A to H, Y = 1 to 5.
To NAPS-8887
SD-1 : G4
U06
TRANS PRI. TERMINAL
PC BOARD
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
REPLACE ONLY WITH PART NUMBER SPECIFIED.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE.(NO INPUT SIGNAL).
ALL PNP TRANSISTORS ARE EQUIVALENT TO 2SA1015-GR UNLESS OTHERWISE NOTED.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
ELECTROLYTIC CAPACITORS ( ) ARE IN uF/WV.
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.
!
NOTE
MPUGND
POWER
+10S
POFF
RLGND
+12VS
AC-G
AC-H
T902
MDC : NPT-1520JQ
MPP : NPT-1520GQ
240V
120V
NC
NC
NC
NAETC-8881
NAPS-8880
To NADG-8876
SD-2 : G4
THERMAL
FUSE
MAIN TRANS.
NC
MDC MPP
F902
F903
F901 None
5A125V
5A125V
None T2.5AL250V
T2.5AL250V
C903
2200/35
+
T902
1 2
3
4
5
6 7 8
9
C906
4.7/50
+
R913
1K
R914
100K
R909
100K
D912
1SS355
D901
D902
D903
D905
D906
D909
D991
1SS355
D992
1SS355
C991
104Z
C902
104Z
D904
D913
1SS355
RL902
D908
D914
UDZ5.1B
S901
F902
J906
J907
J918
Q912
KTC3199-GR
C912
103M/275
D907 NC
J905
R915
150(1/2W)
F901
JL911A
1
2
3
4
5
6
P991
P901A
P912AP913AP911A
Q901
SI-3010KF
1Vc
2Vin
3GND
4Vout
5ADJ
R905
100K
R906
100K
C905
10/50
+
R907
82K
R908
10K
F903
J931
J932
C904
100/35
+
C907
100/35
+
J904
P910
P911B P913B P912B
J930
7
3
1
T901
MDC : NPT-1544D
MPP : NPT-1544P
1
3
5
7
8
9
10
11
12
13
14
15
16
17
18
D901 - 906 : 1SS355
AC OUTLET
SWITCHED
U05
POWER SUPPLY PC BOARD
P901
VOLTAGE
SELECTOR
TYPE --->
LIST
LIST
AC IN
MDC : 120V, 60Hz
MPP : 230 - 240V , 50Hz
NC
NC
NC
NC
TRANS. SEC. TERMINAL PCB
MICROPROCESSOR PCB
LIST
+2.7V
+15.3V
+5.7V
A
1
2
3
4
BCDE

TX-8255
PACKING PROCEDURE
TX-8255
TX-8255
TX-8255
L
R
TX-8255
A824
A823
A822
A801
A802
A803
A804
Front side
Front side
Front side
marking
Right side
marking
Front side
marking
A605
A821
A603
A604
A605
A605
A602
A606
A702
A702
A606
A701
A605
A601
(L & R)
Left side
marking
A807
A805
A606
A703
A703 ---> MPP type only

TX-8222
PRINTED CIRCUIT BOARD VIEW 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 BOARD VIEW 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 BOARD VIEW 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 BOARD VIEW 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