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
PAR TS WHOSE PAR T 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.
SERVICE PROCEDURE
1. Replacing the fuses
This symbol located near the fuse indicates that the
fuse used is show operating type, For continued protection against
fire hazard, replace with same type fuse , For fuse rating, refer to
the marking adjest to the symbol.
Ce symbole indique que le fusible utilise est e lent.
Pour une protection permanente, n'utiliser que des fusibles de meme
type. Ce demier est indique la qu le present symbol est apposre.
ADM-30.1
REF.NO.
F901
F901
PART NAME
FUSE
FUSE
DESCRIPTION
3.15A-UL/T-233
1.25A-SE-EAWK
2. Setting position before shipment.
(1) Power Switch
(2) Input Level : MAX.
(3) Audio Sens. Level : MAX.
(4) Audio Sens. : OFF
(5) 12 V Trigger : OFF
: OFF
Q'TY
1
1
PART NO.
252323GR
252071GR
REMARKS
<DC>
<MA>
<Notes>
<DD> : North American model
<MA> : Australian model
ADJUSTMENT PROCESURE
5
37
R5
58
5
663
OUTPUT OFFSET VOLTAGE
Conditions: Non load, no signal.
1. Set the voltage at L-ch speaker terminal to
0mV +/- 10mVDC by adjusting R513 of
BAAF-0249.
Same as R514 (R-ch).
2. After 2 minutes, set the voltage at speaker
terminal to 0mV +/- 10mV again.
THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
THAT THE FUSE USED IS SLOW OPERATING TYPE
FOR CONTINUED PROTECTION AGAINST FIRE FUSE
HAZARD,REPLACE WITH SAME TYPE FUSE. FOR FUSE
RATING REFER TO THE MAKING ADJACENT TO THE SYMBOL.
CE SYMBOLE INDIQUE QUE LE FUSIBLE UTLISE EST
A LENT, E POUR UNE PROTECTION PERMANENTE,N'UTILISER
QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST
INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.
NOTE_E
ARE CRITICAL FOR SAFETY.
+
CAUTION
FOR CONTINUED PROTECTION
AGAINST FIRE HAZARD, REPLACE
ONLY WITH FUSE OF SAME TYPE
AV
AND RATING INDICATED.
ATTENTION
CAUTIONF AFIN D'ASSURER UNE PROTECTION
PERMANENTE CONTRE LES RISQUES
D'INCENDIE, REMPLACER UNIQUEMENT
PAR UN FUSIBLE DE MEME TYPE
VA
ET CALIBRATION COMME INDIQUE.
PRINTED CIRCUIT BOARD VIEW-1
U001: DIGITAL INPUT CIRCUIT PC BOARD BAAF-0249
ADM-30.1
R689
C631
R601
R555
Q621
D505
C537
D607
C621
R675
C513
1
R663
Q511
R683
R633
R521
R557
R655
Q505
R635
R559 R561
R575 R577
R531
C619
R637
C509
R625
R659
R623
C627
R657
R595
C539
Q509
R553
R639
C525
D601
C529
C521
D503
C527
R551
R661
Q515
C523
C511
R681
R677
R571
R589
Q605
Q605
Q603
C601
Q603
R693
R695
R631
R591
R599
Q631
3
P601AP602A
R585
R587
C603
R619
Q607
R685
Q627
C519
C647
R697
R691
R699
Q513
D501
C507
R537
R535
1
Q615
Q611
D605
C535
Q613Q614
R519
R583
R581
C531
C533
R529
R523
R513
C505
R507 R508
R505
C503 C504
R503
R501 R502
C501
C502
R514
C506
R524
R506
R504
R530
P605A
D502
R532
C508
R538
R536
C534
R520
P603A
R558
C536
R584
R582
C532
Q616
R638
C510
R700
R698
Q612
Q628
R588
1
R522
R692
D606
C620
R684
C648
Q514
R634
Q506
C512
R636
C538
Q516
R572
R640
C632
Q510
R554
R662
R600
R614
R612
Q602
C530
C526
Q602
R686
Q608
C602
BCAF-0249
D608
C622
R632
R586
R592
R678
R590
R618
R616
R610
25140249B
R642
Q606
Q604
1
Q606
Q604
Q632
R696
R690
R674
R664
R676
Q622
C520
C524
D506
C514
1
Q512
R656
1
D504
R556
C540
R682
R552
B side view
C646
C644
R611
R613
R516
R518
Q618
R534
Q504
1
1
R540
R580
Q502
R542
R526
R528
R512
R510
-B
+B
Rch
GND_Rch
P
DC
+B
-B
CSD
D610
DRIVER
C614
R658
R624
SPOUT
R644
D602
R626
R620
D612
R622
C606
R688
C610
C608
R680
Q630
R694
1
C604
C528
R660
R608
R606
R604
R630
R602
C628
R576
R560
D604
R578
C522
GND_DG+B-BGND
R562
R596
Q520
GND_NF
R517
NC
NC
R509
R511
R527
R525
Lch
P
DC
R515
GND_Lch
CSD
R539
Q503
1
1
Q501
R533
R541
Q601
Q617
GND_NF
1
Q519
GND_DG
Q507Q508
R579
R617
Q601
R607
+B-B GND
R609
R621
C613
R605
D603
R629
R641
R603
R615
SPOUT
C605
R643
D611
D609
DRIVER
C607
C609
R687
Q629
C643
R673
R679
1
C645
A side view
A side pattern
B side pattern
PRINTED CIRCUIT BOARD VIEW-2
U003 : POWER SUPPLY PC BOARD
BAPS-0270
ADM-30.1
C957
P956
R951
89
POFF
APOWER
RISK OF FIRE
+12VS
C962
GND
-REPLACE FUSE
GND
AS MARKED.
C959
P954A
12
7
P952A
1
2
3
4
P959B
12
R954
R958
J955
J952
J953
C958
17
RL951
J951
R953
7
6
5
P954B
T95
1
25140270B
1
F901
BCPS-0270
P953A
C951
3.15A125V
C956
L951
C954
L952
C953
AC-G
P959
3
C961
D954
Q951
C960
R957
R956
R955
D955
D953
D952
-
+
D951
C963
Q952
15
AC-G
J958
J957
P957P958
15
AC-G
C955
Component side view from soldering side
U0032 : AC INLET TERMINAL PC BOARD
BAETC-0272
NLP952BP953B
P951
BCPS-0272
0
25140272
Component side view from soldering side
2
Soldering side view from component side
U0031 : POWER SWITCH PC BOARD
BASW-0271
2
S951
Component side view from soldering side
C952
BCSW-0271
0
25140271
P955
ADM-30.1
PRINTED CIRCUIT BOARD VIEW-3
U002 : SPEAKER TERMINAL
PC BOARD
BAAF-0278
Component side view from soldering side
Soldering side view from component side
REDREDBLACKBLACK
J188
7
J190
7
J306
12
J340
10
J357
30
J171
25
J172
22
J175
20
J176
20
J178
10
J177
30
J183
10
J307
7
J321
15
J362
7
J311
7
J173
7
J181
17J179
20
J187
10
J191
J303
12
J305
10
J310
20
J312
17
J322
20
J323
J328
7
J329
7
J333
20
J334
J335
10
J339
10
J341
22
J342
12
J343
12
J344
10
J345
7
J349
J350
30
J351
20
J354
J355
7
J358
10
J3597J360
17
J368
7
J369
7
J371
20
J373
7
J377
17
J378
22
J379
15
J380
15
J376
10
J374
17
J375
17
J356
12
J372
27
J353
7
J370
10
J352
7
J361
J347
30
J309
7
J313
17
J314
22
J315
15
J327
17
J332
J348
17
J367
12
J330
J301
17
J325
7
J338
17
J346
7
J180
22
J170
J182
22
J174
20
J186
20
J365
15
J319
25
J326
22
J304
12
J324
7
J302
10
J318
10
J336
7
J317
17
J185
12J363
10
J316
7
J366
12
J331
15
J364
17
J320
7
J189
J308
30
J337
7
C301
C302
C303
C304
C309
C310
C311
C312
C313
C314
C315
C316
C317
C318
C323
C324
C325
C326
C327
C330
C331
C332
C335
C337 C338
C339
C340
C401
C402
C404
C407
C408
C409
C410
C411
C635
C636
C901
C902
C903
C904
C905
C906
C907
C908
C909
C910
C911
C912
C917
C918
C919
C920
C921
C922
C923
C924
C925
C926
C927
C928
C929
C930
C931C932
C933
C934
D421
D422
D901
-
+
AC
D902
-
+
AC
J901
7
J902
7
J903
7
J904
7
L901
L902
L903
L904
L905
L906
P301P302
P303
P304
P305
P306
P601B
P602B
P603B
P605B
P606B
P901
P902
P903
P904
P905
P906
P907
P908
P911
P912
P913
P914
P959A
P960
Q306
Q307
Q308
Q309
Q310
Q312
Q316
Q317
Q318
Q319
Q320
Q321
Q323
Q328 Q329
Q408
Q409
Q417
Q418
Q419
Q420
Q422
Q423
Q424
Q901
Q902
R301
R302
R303
R304
R305
R306
R321
R322
R323
R324
R325R326
R327
R328
R329
R330
R331
R332
R333
R334
R335
R336
R337
R338
R339
R340
R342
R343
R344
R345
R346
R347
R348
R349
R350
R351
R352
R355
R356
R357
R358
R360
R362
R364
R365
R366
R367
R368R369
R370
R371
R372
R373
R374
R375
R376
R377
R378
R379
R380
R381
R382
R383
R385
R386
R388
R389
R390
R391
R392
R393
R394
R419
R420
R421
R422
R423
R424
R425
R426
R427
R428
R429
R430
R431
R432
R433
R436
R437
R438
R439
R440
R441
R442
R444
R445
R447R448
R901
R902
R907
R908
R931
RL301
RL302
RL901
RL902
S301
S302
BCAF-0278
25140278B
1
+B
-B GND
GNDGND
SP
P901
P902
-12V
GND
+12V
APOWER
POFF
DRIVER
DRIVER
GND_A
SP
GND_A
Rch_OUT
GND -B +B
GND
GND
+B
-B
CSD
CSD
GND_DG
PROTECT
PROTECT
+10V
+10V
+5V
GND_DG
POWER LED
Standby LED
GND_A
Lch_OUT
+B_RCH
-B_RCH
R481
R482
R485
R483
R452
R484
R456
R454
R455
R451
R453
C333
C334
C403
C405
C406
C412
C413
C637
C638
C639
C640
C641
C642
C913
C914
C915
C916
D301
D302
D303
D304
D305
D307
D308
D309
D310
D311
D312
D401
D402
D403
D404
D405
D406
D407
D408
D409
D410
D412
D413
D414
D415
D416
D417
D418
D419
D609
D610
D611
D612
D903
D904
D905D906
F401
Q303
Q305
Q322
Q324
Q325
Q401
Q402
Q403
Q404
Q405
Q407
Q415
Q416
Q425
Q426
Q619
Q620
Q625
Q626
Q903
Q904
Q905
R359
R401
R402
R403
R404
R405
R406
R407
R408
R409
R410
R413
R414
R415
R416
R417
R418
R434
R435
R443
R641
R642
R643
R644
R645
R646
R647
R648
R649
R650
R651
R652
R653
R654
R665
R666
R667
R668
R669
R670
R903
R904
R905
R906
R935
R936
P910
P909
1
1
1
1
1
1
1
1
1
1
1
DRIVER
SP
GND
-B +B GND GND
CSD
PROTECT
+10V
+10V
PROTECT
CSD
-B
+B
GND
GND
+B-BGND
SP
DRIVER
NC
+-
-+
1
PRINTED CIRCUIT BOARD VIEW-4
U0021 : POWER INDICATOR PC BOARD
BAETC-0279
BCETC-0279
1
25140279
15
Soldering side view from component side
J411
D411
P606A
ADM-30.1
R411
R412
Q414
Q413
Q421
Q411
Q412
Component side view from soldering side
IC BLOCK DIAGRAM/ TERMINAL DESCRIPTION
Q601/Q602: IRS20954S DIGITAL AUDIO DRIVER-1
LEAD DEFINITIONS
ADM-30.1
Pin #
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Symbol
VDD
CSD
IN
VSS
NC
VREF
OCSET
DT
COM
LO
VCC
NC
VS
HO
VB
CSH
Description
Floating input positive supply
Shutdown timing capacitor, referenced to VSS
PWM non-inverting input, in phase with HO
Floating input supply return
5V reference output for setting OCSET
Low-side over-current threshold setting, reference to COM
Input for programable deadtime, reference to COM
Low-side supply return
Low-side output
Low-side logic supply
High-side floating supply return
High-side output
High-side floating supply
High-side over-current sensing input, reference to VS
VDD
CSD
IN
VSS
NC
VREF
OCSET
O
DT
1
2
3
4
16
15
14
13
CSH
VB
HO
VS
20954
5
6
7
8
12
11
10
9
NC
VCC
LO
COM
IC BLOCK DIAGRAM/ TERMINAL DESCRIPTION
Q601/Q602: IRS20954S DIGITAL AUDIO DRIVER-2
BLOCK DIAGRAM
ADM-30.1
VDD
IN
VSS
CSD
10.4V
CHARE/
DISCHARGE
PROTECTION
CONTROL
UV
DETECT
INPUT
LOGIC
HV
LEVEL
SHIFT
HV
LEVEL
SHIFT
FLOATING INPUT
HV
LEVEL
SHIFT
HV
LEVEL
SHIFT
HIGH
SIDE
CS
FLOATING HIGH SIDE
5V REG
DEAD-TIME
SD
DETECT
DT
UV
DETECT
UV
UV
HV
LEVEL
SHIFT
Q
LOW SIDE CS
CSH
VB
HO
VS
VCC
LO
20.8V
COM
OCSET
5.1V REFEREANCE
VREF
DT
IC BLOCK DIAGRAM/ TERMINAL DESCRIPTION
Q631/ Q632: LM61CIZ (TEMPERATURE SENSOR)
Connection Diagram
ADM-30.1
SOT-23
Top View
TO-92
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