Onkyo A-905TX User manual
SERVICE MANUAL
Ref. No. 3677
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.
052001
A-905TX
INTEGRATED STEREO AMPLIFIER
A-905TX
UDT 120V AC, 60Hz
UPT 230-240V AC, 50Hz
STANDBY/ON
PHONES
STANDBY
A-905TX
INTEGRATED STEREO AMPLIFIER
TREBLEBASS BALANCE
POWER
OFF/1/2
—+ —+ LR
PRESENCE
ACOUSTIC
CD
MD TUNER
LINE/DVD
TAPE
CDR/PC
SOURCE DIRECT
DIRECT
DIRECT
TONE
INPUT
ON OFF
VOLUME WIDE RANGE AMP TECHNOLOGY
CLOCK SLEEP EFFECT
GRAPHIC EQ
MODE
123
456
789
10
/
0
-
-/
-
-
-
VOLUME
PRESET
F
MA
M
PLAY MODE
PLAY MODE
REPEAT
CLEAR
SCROLL
MEMORY
REPEAT
CLEAR
DISC
REPEAT
CLEAR
ACOUSTIC
PRESENCE
TONE
RANDOM
TIMER
UP/DOWN
ENTER
MUTING
INPUTTUNER
M D
DVD
C D
CDR
TAPE
REC
REC
PAUSE
/
STEP
STANDBY/ ON
REMOTE CONTROLLER RC
-
456
S
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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A-905TX
SPECIFICATIONS
PART-XX
SERVICE PROCEDURES
PART-XX
Replacing the fuses
REF.NO. PART NO. DESCRIPTION
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.
F901 252158 1.6A-UL/T-237, Fuse <DT>
252069 0.8A-SE-EAK, Fuse <PT>
F902-F904 2.5A-SE-EAK, Fuse <PT>
252075
NOTE:
<DT> : Asian model only for 120V
<PT> : Asian model only for 230V
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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A-905TX
CHASSIS EXPLODED VIEW
############
A51
A65
A66
A11
A10
A10
A11
A10 A61
A64
A63
A52
A58
A50
A67
U9
A1
A13
A55
A53 A54
A56
A73
A73
A16
U4
F901
A43
A43
A25
A26
E860
A34
A34
T901
Q523 Q525
Q526
Q524
Q528
Q527
A28
A10
P701
A10
A10
A10
U3
U2
P402
P402
A46
A49
A49
A49
A49
U7
U1
U8
U5
A41
A27
A27
P801
A81
A40
A11
A11
A11
P901
P584A
U10
F903
F904
F902
A47
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0
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9
2
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9
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8
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2
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
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A-905TX
CHASSIS EXPLODED VIEW PARTS LIST
############
REF NO. PART NO. DESCRIPTION REF NO. PART NO. DESCRIPTION
A1 27111123 Front bracket P402 27190011 KGLS-6S, Holder
A10 838130088 3TTB+8B, Self tapping screw P584A 880009 Plastic rivet, NRP-345 <PT>
A11 838430088 3TTB+8B(BC), Self tapping screw P701 27191106 UAMS-05S-2, Holder
A13 28198862 Facet, VOL P801 25055436 or NPLG-2P418, Shorted plug
A16 27100375D Chassis 25055945
A25 27160451B
27160452B
A26 29110083 Adhesive tape, CROSS-16U Q523,Q524 2202303 or *2SC4512-O or
A27 801525 3TTB+8B(BC), Special screw <PT> 2202304 or *2SC4512-Y or
838430088 3TTB+8B(BC), Self tapping screw <DT> 2202305 *2SC4512-P, Transistor
A28 801433 3SMS8W.SW+14B(BC), special screw Q525,Q526 2202313 or *2SA1726-O or
A34 27141530A Retainer, HS-2 2202314 or *2SA1726-Y or
A40 27300750 Bussing cord 2202315 *2SA1726-P, Transistor
A41 27122831 Rear panel <DT> Q527,Q528 2212654 or *2SC3421-Y or
27122832 Rear panel <PT> 2212653 *2SC3421-O, Transistor
A43 830440089 4TTC+8C(BC), Self tapping screw
A46 28184759-1
A47 29362571 Label, WARNING <DT,PT>
2301423 NPT-1374D, Power transformer <DT>
A49 838930088
Heat sink <DT> P901 253277MIL AS-UC-2#18, Power supply cord <DT>
Heat sink <PT> 253193HIT AS-CEE, Power supply cord <PT>
Top cover T901
3TTB+8B(UN), Self tapping screw
2301424 NPT-1374P, Power transformer <PT>
A50 838430107 3TTB+10S(BC), Self tapping screw
U1 1A905530-4B NADG-6630-4B, Main circuit PC board ass'y <DT>
A51 27212298 Front panel
1A905530-4C NADG-6630-4C, Main circuit PC board ass'y <PT>
A52 28198894 Facet 7P
U2 1A905531-4B NAAF-6631-4B, Preamplifier circuit PC board ass'y <DT>
A53 28198895 Facet 1P
1A905531-4C NAAF-6631-4C, Preamplifier circuit PC board ass'y <PT>
A54 28198925 Facet A
U3 1A905532-4B NAAF-6632-4B, Acoustic circuit PC board ass'y <DT>
A55 27268037 Guide A
1A905532-4C NAAF-6632-4C, Acoustic circuit PC board ass'y <PT>
A56 28325133 Knob, FM
U4 1A905533-4B NAPS-6633-4B, Power supply circuit PC board ass'y <DT>
A58 28191798 Clear plate, RE
1A905533-4C NAPS-6633-4C, Power supply circuit PC board ass'y <PT>
A61 28325926 Knob, INPUT
U5 1A905534-4B NADIS-6634-4B, Display circuit PC board ass'y <DT>
A63 28135247Y Badge
1A905534-4C NADIS-6634-4C, Display circuit PC board ass'y <PT>
A64 28325925 Knob, VOL
U7 1A905536-4B NAETC-6636-4B, Speaker terminal PC board ass'y <DT>
A65 28325674 Knob, TD
1A905536-4C NAETC-6636-4C, Speaker terminal PC board ass'y <PT>
A66 28325927 Knob, TONE
U8 1A905537-4B NAETC-6637-4B, Terminal PC board ass'y <DT>
A67 28325673 Knob, POWER
1A905537-4C NAETC-6637-4C, Terminal PC board ass'y <PT>
A73 27175323 Leg AS
U9 1A905539-4B NAETC-6639-4B, Power switch PC board ass'y <DT>
A81 29362630 Label, PROCESSOR
1A905539-4C NAETC-6639-4C, Power switch PC board ass'y <PT>
F901 252158 1.6A-UL/T-237, Fuse <DT>
U10 1A905540-4C NAETC-6640-4C, Fuse PC board ass'y <PT>
252069 0.8A-SE-EAK FSBFUSE, Fuse <PT>
F902-F904 2.5A-SE-EAK FUSE <PT> NOTE:
<DT> : Asian model only for 120V
<PT> : Asian model only for 230V
NOTE:THE COMPONENTS IDENTIFIED BY MARK
ARE CRITICAL FOR RISK OF FIRE AND
ELECTRIC SHOCK. REPLACE ONLY WITH
PART NUMBER SPECIFIED.
CAUTON :
Replacement of the transistor of mark * ,if necessary,
must be made from the same beta group(HFE) as the
original type.
252075
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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SCHEMATIC DIAGRAM-1
U7
U9
U4
U10
U1
U8
SPEAKER TERMINAL PC BOARD
A-905TX
POWER SWITCH PC BOARD
POWER SUPPLY CIRCUIT
PC BOARD
FUSE PC
BOARD
MAIN CIRCUIT
PC BOARD
TERMINAL PC BOARD
-1.2
1.2
5.6
12.2
-12.2
12.411.8
-24.6
24.6
-1.2
1.2
-24.1 -24.6
24.6
24.1
-24.1 -24.6
24.6
24.1
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
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
P910
P307
D914-D917
GP104003E
+
JL702B
S951
S951
S951
P910 P910
*C312
221K
*C311
221K
*C308
101K
*C307
101K
*C304
101K
*C303
101K
*C302
101K
*C301
101K
*C320
101K
*C319
101K
*C316
101K
C315
101K
*C314
101K
*C313
101K
C712
104J
P951
P952
P902AP911AP912A
P951
P952
P951
P952
P911AP912A
P951
P952
P902A
P951
P952
P912C P911C
P911A
P912A
P914A P913A
P951P952
P902A
P911B P902B
P912B
P586B P585B
P586A P585A
P501A
P401A
Q713
M51943B
GIO
Q911
78M56
GIO
R576
500B
R575
500B
R713 100K*7
R712
100K*4
JL901A JL901A JL901A
JL582B
P461B
JL901B
P405C
P502AP403A
JL701B
Q704
DTA124ES
Q451
DTA114ES
Q702 TA7291S
1
2
3
4
5
6
7
8
9
X701
CST4.00MGW
D912
MTZJ12C
D913
MTZJ12C
D745
MTZJ5.1B
D705
MTZJ5.6B
D707
MTZJ5.1B
Q714
DTC144ES
Q912
DTC123JS
Q703
DTC144ES
RL901
RL901
D918
GP104003E
D706
D919
D702
D701
D704
D708
D722
D703
D911
RBV402
D3SBA30
P901
P901
P901
AC230-240V/50HZ
P901A P901A P901A
F901
1.6A/125V F901
1.6A/125V
F902
T2AL250V
F904
T2.5AL250V
F903
T2.5AL250V
F901
Q701
HD404316-E30H 27
28
29
30
34
35
39
44
905/909
10
AVCC
15
AVSS
6
CE
43
CLK
40
DATA
42
DIRECT
14
GND
5
HP-IN
13
INPMUTE
26
KEYIN
9
LAT
41
MUTELED
20
NC
22
POFF
17
21
POWER2
25
PROTECT
36
REMIN
18
RESET
2
RIIN
12
RIOUT
11
SBASS1
31
SBASS2
32
SBASS3
33
SBASSLEDA
37
SBASSLEDB
38
SELIN1
7
SELIN2
8
SP-RELAY
19
TEST
1
VCC
16
VOLDOWN
24
VOLUP
23
X1
3
X2
4
L506
L502
L504
L501
L505
L503
JL581C
JL581A
P405B
P582
P584
R562
0.22*2
(2W)
R561
0.22*2
(2W)
C917
330/16
C916
330/16
C922
10/16 C919
47/16
C516
10/16
C515
10/16
C703
100/6.3
C701
0.1/5.5
C914
3300/35
C915
3300/35
C920
2200/16
C708
2.2/50
C322
10/16
C321
10/16
C451
2.2/50
C452
2.2/50
C711
1/50
Q533
2SA992
Q706
2SA933S-R
Q526
2SA1726
Q518
2SA992
Q520
2SA965
Q525 2SA1726
Q517
2SA992
Q519
2SA965
Q530
2SC1740S
Q528
2SC3421
Q527
2SC3421
Q529
2SC1740S
Q705
2SC1740S-R
Q532
2SC1845
Q522
2SC2235
Q524
2SC4512
Q516
2SC1845
Q531
2SC1845
Q523
2SC4512
Q521
2SC2235
Q515
2SC1845
P311A
P306
C951
0.01
C951
0.01
C309
101
C582
471
C581 471
C951
0.01
C921
223Z
C918
103J
C923
223Z
C913
104J
C912
104J
C517
473
C704
223Z
C707
223Z
C533
223Z
C702
474
C518
473
C532
223Z
C710
223Z
C709
223Z
C531
223Z
R916
0.47
(1/2W)
R916
0.47
(1/2W)
R554
2.2 (1/2W)
R552
2.2
(1/2W)
R551
2.2
(1/2W)
R353
1M
R916
0.47
(1/2W)
R543
100
(1/2W)
R550
15
(1/2W)
R582
10K
R581
680
R556
82
(1/2W)
R555
82
(1/2W)
R351
2.2K
R354
1M
R352
2.2K
R308
1M
R307
1M
R306
330
R305
330
R304
1M
R303
1M
R302
330
R301
330
R316
1M
R315
1M
R314
330
R313
330
R312
1M
R311
1M
R310
2.2K
R309
2.2K
R324
1M
R323
1M
R322
330
R321
330
R320
1M
R319
1M
R318
2.2K
R317
2.2K
R572
220
R568
1.8K
R570
1.2K
R574
220
R571
220
R567
1.8K
R569
1.2K
R573
220
R593
10
(1/2W)
R595
10
(1/2W)
R328
1M
R332
1M
R331
1M
R327
1M
R330
330
R326
330
R329
330
R325
330
R560
10
(1/2W)
R601
1K
R583
10K
R565
8.2
(1/2W)
R745
1K
R738
3.3K
R718
100K
R719
100K
R740
10K
R739
22K
R610
10K
R705
22K
R914
270
(1/2W)
R915
220
(1/2W)
R913
220
(1/2W)
R912
270
(1/2W)
R917
10
(1/2W)
R708
2.2K
R709
1K
R707
220K
R706
47K
R471
2.2K
R472
220K
R336
1M
R335
1M
R334
2.2K
R333
2.2K
R340
1M
R339
1M
R338
330
R337
330
R714
68K
R716
12K
R715
68K
R717
22K
R596
10
(1/2W)
R608
10K
R566
8.2
(1/2W)
R602
1K
R606
820
R604
680
R564
4.7
(1/2W)
R546
100
(1/2W)
R558
10
(1/2W)
R548
15
(1/2W)
R544
100
(1/2W)
R594 10 (1/2W)
R742
100K
R736
100K
R701 1M
R710
3.3K
R711 4.7K
R7351K
R7341K
R7331K
R605
820
R607
10K
R603
680
R563
4.7
(1/2W)
R553
2.2 (1/2W)
R559
10 (1/2W)
R549
15
(1/2W)
R545
100
(1/2W)
R547
15
(1/2W) R557
10 (1/2W)
P305
P301
P302
P303
P304
Q301
TC9273N-010
10
11
12 17
18
19
20
21
22
23
24
25
26
27
CD3
CDR-P2
CK15
DATA16GND13
L/DVD5
MD-P7
MD-R6
ST14
T-P9
T-R8
TU4
VDD 28VEE1
UJJ
NAETC-6639
NAPS-6633
NPT-1374J
/60Hz
AC100V/50Hz
T901
UDT
NAETC-6639
AC120V/60Hz
NAPS-6633
NPT-1374D
T901
+B5
-B2
+B2
+B4
+B3
-B1
+B1
NAETC-6640
UPT
T800mAL250V
R
L
SPEAKERS
CDR/PC
NAETC-6636
D918
Acoustic Presence AMP&VR
UPT
UJJ,UDT
NAETC-6639
ONE TIME ONLY
R742
R712,R713,R718,R719
USE
NO USE
PARTS
NUMBER
C301-C304,C307,C308
C311-C316,C319,C320
C581,C582
NPT-1374P
NAPS-6633
T901
TO NADIS-6634 TO NADIS-6634
TO NADIS-6634 TO NADIS-6634
TO NAAF-6631
TO NAAF-6631
TO NAAF-6632
TO NAAF-6632
TO NAAF-6631
NAETC-6637
NADG-6630
LINE/DVD
TUNER
MD
REC
REC
PLAY
PLAY
RIGHT
LEFT
RIGHT
LEFT
RIGHT
LEFT
CD
LEFT
LEFT
RIGHT
RIGHT
LEFT
RIGHT
RIGHT
LEFT
IN
OUT
PROCESSOR
*
+B1
+B1
MUTING
S.BASS1
S.BASS2
S.BASS3
POWER2
R
L
E
NF-R
NF-L
POWER2
E
E
L
L
R
R
E
E
E
R
R
L
L
+B2
-B2
*
*
-B1
+B1
HP-IN
DIRECT
KEYIN
MUTELED
+5.6V
E
REMIN
LED A
LED B
+5.6V
E
SELIN2
SELIN1
CLK
LAT
DATA
Lch
E
Rch
SUBWOOFER PREOUT
L-OUT
R-OUT
E
*
RI
P311B
P311B
TAPE
RIGHT
LEFT
RIGHT
LEFT
RIGHT
LEFT
RIGHT
LEFT
PLAY
REC
*
E
-B1
-B1
BY MARK ARE CRITICAL FOR SAFETY
IDENTIFIED
NOTE
THE COMPONENTS
REPLACE ONLY WITH PART NUMBER SPECIFIED.
.
.
VOLTAGE (MEASURED WITH VOLTMETER) IS DC VOLTAGE. (NO INPUT SIGNAL)
.
ALL PNP TRANSISTORS ARE EQUIVALENT
.
ALL NPN TRANSISTORS ARE EQUIVALENT TO 2SC1815-GR UNLESS OTHERWISE NOTED.
.
ALL DIODES ARE EQUIVALENT TO 1SS133 UNLESS OTHERWISE NOTED.
.
ELECTROLYTIC CAPACITORS ( )ARE IN F/WV.
.
ALL CAPACITORS ARE IN pF/50WV UNLESS OTHERWISE NOTED.
EX) 030 3pF 330 33pF 331 330pF
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.
.
.
TO 2SA1015-GR UNLESS OTHERWISE NOTED.
333 0.033uF
A
1
2
3
4
5
BCDEFG
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
A-905TX
SCHEMATIC DIAGRAM-2
U3
U2
PREAMPLIFIER
CIRCUIT PC BOARD
ACOUSTIC CIRCUIT
PC BOARD
U5 DISPLAY CIRCUIT PC BOARD
-19.1
-23.4
-24.0
-23.4
-13.0
-6.9
-13.0
-6.9
-19.1 -19.7
-0.7
24.123.5
22.923.5
24.1
23.5
22.923.5
-0.7
-24.0
-19.7
S401(1/2)
S401(2/2)
P401B
P501B
JL702A
P405A
D503
MTZJ5.6B
D504
MTZJ5.6B
JL501A
JL501B
C420
104
C416
393
C424
153
C423
153
C415
393
C417
474
C419
104
C418
474
C410
104
C409
104
Q414
2SK246
Q413
2SK246
Q409
2SK246
Q407
2SK246
Q410
2SK246
Q408
2SK246
Q406
2SK246
Q405
2SK246 Q411
2SK246
Q412
2SK246
Q402
NJM2068L-D
Q403
NJM2068L-D
Q402
NJM2068L-D
Q403
NJM2068L-D
Q404
NJM2068D-D
Q404
NJM2068D-D
Q401
NJM4565D-D
Q401
NJM4565D-D
S702
S701
P403B
P502B
JL701A
P583
Q711
DTA114ES
Q712
DTA114ES
D720
SPR-39MVW
Q418
RN1241
Q416
RN1241
Q417
RN1241
Q415
RN1241
Q708
DTC114ES
Q710
DTC124ES
Q709
DTC124ES
JL582A P461A
R458R458
R461
250KW
U701
REMSENS
D402
D502
D501
D746
D410
D409
D403
D405
D404
D406
D401
D408
D407
D710
D709
D721
SLR-332VR
D711
SLR-332VR
D723
SEL2E10C
D716
SLR-332DU
D714
SLR-332DU
D717
SLR-332DU
D715
SLR-332DU
D713
SLR-332DU
D712
SLR-332DU
Q707 74HC595
D14
LC 12
OE 13
QA 15
QB1
QC2
QD3
QE4
QF5
QG6
QH7 RES 10
SC 11
SQH 9
VDD 16
VSS8
R437(2/2)
100KW
R437(1/2)
100KW
R438(2/2)
100KW
R438(1/2)
100KW
C509
220/6.3
C718
10/16
C519
100/50
C520
100/50
C502
22/50
C522
100/50
C746
100/6.3
C715
10/16
C714
10/16
C514
10/50
C513
10/50
C512
10/16
C521
100/50
C501
22/50
C511
10/16
C426
10/16
C425
10/16
C412
2.2/50
C411
2.2/50
C429
10/16
C430
10/16
C407
47/50
C408
47/50
C510
220/6.3
C404
47/50
C403
47/50
C717
10/16
Q509
2SA992
Q507
2SA992
Q511
2SA992
Q508
2SA992
Q510
2SA992
Q512
2SA992
Q505
2SC1740S
Q501
2SC1845
Q503
2SC1845
Q513
2SC1845
Q502
2SC1845
Q506
2SC1740S
Q504
2SC1845
Q514
2SC1845
C722
103Z
C508
2P
C723
103Z
C503
101
C504
101
C724
223Z
C713
223Z
C721
103Z
C507
2P
C505
101J
C421
822
C422
822
C427
153
C428
153
C414
224
C413
224
C506
101J
C406
102J
C405
102J
C716
223Z
R579
820
R513
3.3K
R514
3.3K
R533
82
(1/4W)
R529
1.2K
(1/2W)
R522
22K
R521
22K
R731
100K
R730
100K
R502
56K
R525
820
(1/2W)
R598
1.2K
(1/2W)
R597
1.2K
(1/2W)
R450
100K
R446
1M
R460
10K
R459
10K
R721
10K
R746
10K
R744
560
R741
100K
R504
1K
R503
1K
R590
33
R589
33
R578
56K
R520
100K
R457
100K
R456
100K
R455
100K
R743
100K
R727
330
R726
390
R577
56K
R517
470
R527
820
(1/2W)
R523
820
(1/2W)
R501
56K
R519
100K
R515
2.7K
R509
330
R505
1.8K
R507
1.8K
R511
330
R537
18K
R535
18K
R531
82
(1/4W)
R453
220K
R451
1K
R454
220K
R452
1K
R518
470
R528
820
(1/2W)
R442
1K
R440
1M
R441
1K
R439
1M
R434
680
R427
1.8K R425
1M
R423
4.7K
R421
220K
R433
680
R429
1M
R435
100K
R431
1M
R426
1M
R428
1.8K
R422
220K
R424
4.7K
R430 1M
R436
100K
R432
1M
R414
1M
R413
1M
R449
100K
R445
1M
R415
1M
R419
180K
R447
1.2K
R443
1M
R448
1.2K
R444
1M
R416
1M
R418
680
R420
180K
R417
680
R580
820
R530
1.2K
(1/2W)
R526
820
(1/2W)
R524
820
(1/2W)
R516
2.7K
R506
1.8K
R510
330 R512
330
R508
1.8K
R538
18K
R536
18K
R532
82
(1/4W)
R534
82
(1/4W)
R412
4.7K
R410
220K
R408
3.3K
R406
3.3K
R411
4.7K
R409
220K
R407
3.3K
R405
3.3K
R402
330
R401
330
R729
3.3K
R728
3.3K
R724
150
R403
100K
R404
100K
R585
180
R586
180
R587
180
R588
180
R723
560
R722
270
TONE
DIRECT
SOURCE DIRECT
INPUT SELECTOR
RED GRN
2
31
L-2(CDR)
L-1/DVD
TO NADG-6630
TO NADG-6630
TO NADG-6630
TO NADG-6630 TO NADG-6630 TO NADG-6630
TO NADG-6630
TO NAAF-6632
TO NADIS-6634
TO NADG-6630
TO NADG-6630
NADIS-6634
NAETC-6635
NAAF-6631
NAAF-6632
DIRECT
POWER2
MUTE
PHONES
TD
RN
RO
RB
E
LB
LO
LN
TD
RN
RB
E
LB
LO
LN
RO
+B2
-B2
SBASS1
POWER2
R
E
R
L
L
E
E
E
NF-E
NF-E
R
E
R
L
L
L
R
NF-L
NF-R
ST-BY TAPE
MD
CD TUNER
HP-IN
VOLUME
SBASS3
SBASS2
INPMUTE
-B
+B
E
-B
+B
E
E
E
REMIN
E
+5.6V
MUTELED
KEYIN
(2/2)
(1/2)
(2/2)
(2/2)
(2/2)
(1/2)
(1/2)
Tone bass
R-IN
L-IN
TREBLE
BASS
(1/2)
ACOSTIC PRESECE
DATA
LAT
CLK
SELIN1
SELIN2
E
+5.6V
LEDB
LEDA
E
Lch
E
Rch
BALANCE
ACOUSTIC PRESENCE
R732
POWER
VOL_IND
A
1
2
3
4
5
BCDEFG
w
w
w
.
x
i
a
o
y
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1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
A-905TX
PC BOARD CONNECTION DIAGRAM
XXXXX
NAETC-6636
NAPS-6633
NAETC-6640
NAPS-6633
NADG-6630
NADG-6630
NADIS-6634
NAETC-6637
NAAF-6631
NAAF-6632
230V model only
NAETC-6639
AC IN
AC OUTLET
P584 P585B
P585A
P586B
P586A
JL581C
P910
P952B
P952B
P901
P951A
P951B
P954A
P954B
P912A
P902A P902B
P911A
T901
JL901A
JL582A
JL582B
J05B
J05A
J04B
J04A
J03B
J03A
JL702A
JL702B
JL701B
JL701A
JL461A
P461A
P791A
JL501B
P912C
P911C
P912A
P911A
P913A
P914A P914B
P913B
P311B
P306 P305
REMOTE
CONTROL LINE/DVD
TUNER
TAPE
PLAY REC
SUBWOOFER
PRE OUT MD
PLAY REC CDR/PC
CD REC PLAY
PROCESSOR
IN OUT
P304P582 P303 P302 P301 P351A
P351B
P311A
JL581A
P591A
P591B
P912B
P911B
P592A
P592B
JL901B
P307
P502B
P502A
P501B
P501A
P403A
P401B
P403B
P405A
P405C
P461B
P401A
P405B
SPEAKERS
R L
SPEARKER
TERMINAL
PC BOARD
POWER SUPPLY
PC BOARD
MAIN CIRCUIT
PC BOARD
DISPLAY CIRCUIT
PC BOARD
TERMINAL
PC BOARD
PREAMPLIFIER
CIRCUIT
PC BOARD
ACOUSTIC
CIRCUIT
PC BOARD
POWER SWITCH
PC BOARD
U10
U2
U3
U1
U7
U4
FUSE PC BOARD
POWER SUPPLY
PC BOARD
U4
U9
U5
U8
MAIN CIRCUIT
PC BOARD
U1
w
w
w
.
x
i
a
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y
u
1
6
3
.
c
o
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Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
A-905TX
PRINTED CIRCUIT BOARD PARTS LIST-1
MAIN CIRCUIT PC BOARD (NADG-6630-4B/C)
CIRCUIT NO. PART NO. DESCRIPTION CIRCUIT NO. PART NO. DESCRIPTION
ICs
Rotary encoder
Q301 22240881 TC9273N-010
R732 25065534 REB161PVB
Q701 22241481 HD404316E30H
Relay
Q702 22240239 TA7291S
RL901 25065597 NRL-2P8A-DC12-147
Q713 222951 M51943B
Jacks
Q911 222780565JRC NJM78M56FA
P582 25045302 NPJ-1PDBL161
Transistors
P301-P303 25045303 NPJ-4PDBL162
Q405,Q406 2211945 2SK246-GR
P307 25045307 NPJ-2PDBL166
Q451 2213510 or DTA114ES or
Sockets
2215770 KRA102M
JL581A 25051088 NSCT-4P875
Q515,Q516 2211733 or 2SC1845-E or
JL582B 25055624 NPLG-3P586
2211732 2SC1845-F
JL701B 25055630 NPLG-9P592
Q517,Q518,Q533 2211792 or 2SA992-F or
JL702B 25055628 NPLG-7P590
2211793 2SA992-E
JL901A,JL901B 25051107 NSCT-3P894
Q519,Q520 2211643 or 2SA965-O or
P311A 25055709 NPLG-13P665
2211644 2SA965-Y
P351 2009990230 NSAS-6P0333
Q521,Q522 2211653 or 2SC2235-O or
P401A 25055706 NPLG-10P662
2211654 2SC2235-Y
P403A,P502A 25055702 NPLG-6P658
Q529,Q530,Q705 2213284 2SC1740S-R
P405 2009990565UL NSAS-14P0758
Q531,Q532 2211733 or 2SC1845-E or
P461B 25055133 NPLG-3P117
2211732 2SC1845-F
P501A 25055808 NPLG-19P764
Q703,Q714 221282 or DTC144ES or
P503,P504 25055038 NPLG-2P29
2215820 KRC104M
Retainer
Q704 2212600 or DTA124ES or
E851 27141749 (BUS)
2215780 KRA103M
Q706 2213354 2SA933S-R
Q912 2213640 DTC123JS
Diodes
D701,D703,D704 223163 or 1SS133 or
PREAMPLIFIER CIRCUIT PC BOARD (NAAF-6631-4B/C)
223205 1SS270A
Transistors
D702,D914-D918 22380035 or GP104003E or
Q501-Q504 or 2211732 or 2SC1845-F or
22380046 AM01Z
2211733 2SC1845-E
D705 224470562 MTZJ5.6B
Q505,Q506 2213284 2SC1740S-R
D706,D708 223163 or 1SS133 or
Q507-Q512 or 2211792 or 2SA992-F or
223205 1SS270A
2211793 2SA992-E
D707,D745 224470512 MTZJ5.1B
Q513,Q514 or 2211732 or 2SC1845-F or
D722,D919 223163 or 1SS133 or
2211733 2SC1845-E
223205 1SS270A
Diodes
D911 22380022F or RBV402 or
D501,D502 223163 or 1SS133 or
22380271F D3SBA20
223205 1SS270A
D912,D913 224471203 MTZJ12C
D503,D504 224470562 MTZJ5.6B
Oscillator
Capacitors
X701 3010150 CST4.00MGW
C511,C512 354741009 10uF, 16V, Elect.
Coils
C509,C510 393322217 220uF, 6.3V, Elect.
L503-L506 5597-45502 FR core
C513,C514 393381007 10uF, 50V, Elect.
Capacitors
C519-C522 393381017 100uF, 50V, Elect.
C301-C304 374721015 100pF+/-10%, 50V, Plastic
C501,C502 393382207 22uF, 50V, Elect.
C307,C308 374721015 100pF+/-10%, 50V, Plastic
Resistors
C311,C312 374722215 220pF+/-10%, 50V, Plastic
R529,R530 443521224 1.2kohm +/-5%, 1/2W, Metal oxide
C321,C322,C922 393341007 10uF, 16V, Elect.
R597,R598 443521224 1.2kohm +/-5%, 1/2W, Metal oxide
C407,C408 393384707 47uF, 50V, Elect.
R523-R528 443528214 820ohm +/-5%, 1/2W, Metal oxide
C451,C452 353780229 2.2uF, 50V, Elect.
R531-R534 415428203 82ohm +/-5%, 1/4W, Carbon
C503,C504 374721015 100pF+/-10%, 50V, Plastic
R458 5104383 +N16RGL100KBT20F, Volume
C515,C516 393381007 10uF, 50V, Elect.
Sockets
C517,C518 374724734 0.047uF+/-5%, 50V, Plastic
P502B 25051231 NSCT-6P1021
C701 3000078 or DX-5R5L104 or
P501B 25051530 NSCT-19P1317
3000076 EECS5R5T104, Super capacitor
P405A 25055137 NPLG-7P121
C702 375524744 MMT50V-474J
C703 354721019 100uF, 6.3V, Elect.
C708 354780229 2.2uF, 50V, Elect.
C711 354780109 1uF, 50V, Elect.
C712,C912,C913 374721044 0.1uF+/-5%, 50V, Plastic
C914,C915 3504317 3300uF, 35V, Elect.
C916,C917 354743319 330uF, 16V, Elect.
C918 374721034 0.01uF+/-5%, 50V, Plastic
C919 354744709 47uF, 16V, Elect.
C920 354742229S 2200uF, 16V, Elect.
L501,L502 231176S S-1.3C
R543-R546 443521014 100ohm +/-5%, 1/2W, Metal oxide
R547-R550 443521504 15ohm +/-5%, 1/2W, Metal oxide
R551-R554 453530224 2.2ohm +/-5%, 1/2W, Metal oxide
R555,R556 443528204 82ohm +/-5%, 1/2W, Metal oxide
R557-R560 443521004 10ohm +/-5%, 1/2W, Metal oxide
R561,R562 4500027 MPC708-2WK-0.22
R563,R564 453530474 4.7ohm +/-5%, 1/2W, Metal oxide
R565,R566 453530824 8.2ohm +/-5%, 1/2W, Metal oxide
R575,R576 5210257 N06HR500BC, Trimming
R593-R596,R917 443521004 10ohm +/-5%, 1/2W, Metal oxide
R912-R915 443522714 270ohm +/-5%, 1/2W, Metal oxide
U1
U2
NOTE:
<DT> : Asian model only for 120V
<PT> : Asian model only for 230V
NOTE:THE COMPONENTS IDENTIFIED BY MARK
ARE CRITICAL FOR RISK OF FIRE AND
ELECTRIC SHOCK. REPLACE ONLY WITH
PART NUMBER SPECIFIED.
Resistors
w
w
w
.
x
i
a
o
y
u
1
6
3
.
c
o
m
Q
Q
3
7
6
3
1
5
1
5
0
9
9
2
8
9
4
2
9
8
T
E
L
1
3
9
4
2
2
9
6
5
1
3
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
http://www.xiaoyu163.com
http://www.xiaoyu163.com
A-905TX
PRINTED CIRCUIT BOARD PARTS LIST-2
CIRCUIT NO. PART NO. DESCRIPTION CIRCUIT NO. PART NO. DESCRIPTION
Capacitors
Holders
C405,C406 374721024 1000pF+/-5%, 50V, Plastic
JL582A 25051087 NSCT-3P874
C409,C410 374721044 0.1uF+/-5%, 50V, Plastic
JL702A 25051091 NSCT-7P878
C419,C420 374721044 0.1uF+/-5%, 50V, Plastic
JL501A 25051092 NSCT-8P879
C427,C428 374721534 0.015uF+/-5%, 50V, Plastic
JL701A 25051093 NSCT-9P880
C413,C414 374722244 0.22uF+/-5%, 50V, Plastic
C415,C416 374723934 0.039uF+/-5%, 50V, Plastic
D723A 27191018A (LED)
C417,C418 374724744 0.47uF+/-5%, 50V, Plastic
C421,C422 374728224 8200pF+/-5%, 50V, Plastic
SPEAKER TERMINAL PC BOARD(NAETC-6636-4B/4C)
C425,C426 393341007 10uF, 16V, Elect.
CIRCUIT NO. PART NO. DESCRIPTION
C429,C430 393341007 10uF, 16V, Elect.
Terminal
C411,C412 393380227 2.2uF, 50V, Elect.
P584 25060193 NTM-4PDMN115, Speakers
C403,C404 393384707 47uF, 50V, Elect.
Wire holder
Sockets
JL581C 25051088 NSCT-4P875
P403B 25051231 NSCT-6P1021
P401B 25051235 NSCT-10P1025
JL501B 25055629 NPLG-8P591
TERMINAL PC BOARD (NAETC-6639-4B/4C)
CIRCUIT NO. PART NO. DESCRIPTION
POWER SUPPLY PC BOARD (NAPS-6633-4B/4C)
Capacitors
CIRCUIT NO. PART NO. DESCRIPTION
C313-C316 374721015 100pF±10%, 50V, Plastic
Resistors
C319,C320 374721015 100pF±10%, 50V, Plastic
R916 453534794 0.47ohm ±5%, 1/2W, Metal oxide
Jacks
Socket
P304,P305 25045303 NPJ-4PDBL162
P910 25051637 NSCT-2P1424, AC Outlet <PT>
P306 25045330 NPJ-2PDBL184
25051990 NSCT-2P1777, Ac Outlet <DT>
Socket
Plug
P311B 25051238 NSCT-13P1028
P901A 25055676 NPLG-2P632
Fuse holder
F901 25050065 YSH403T <JJ>
POWER SWITCH PC BOARD (NAETC-6639-4B/4C)
F902 25050065 YSH403T <PT>
CIRCUIT NO. PART NO. DESCRIPTION
Fuse label
Capacitors
F901C 29362519 T800mAL250V <PT>
C951 3300055 DE1610F103M-KH
Switch
S951 25035550 NPS-111-L512P, Power
Cover
DISPLAY CIRCUIT PC BOARD(NADIS-6634-4B/AC)
C951A 27301216 SB1925A <PT>
CIRCUIT NO. PART NO. DESCRIPTION
ICs
Q707 222745955 74HC595P
U701 241307 GP1U271X
FUSE PC BOARD (NAETC-6640-4C)
Transistors
CIRCUIT NO. PART NO. DESCRIPTION
Q409,Q410 2211945 2SK246-GR
Fuse holders
Q413,Q414 2211945 2SK246-GR
F903,F904 25050065 YSH403T <PT>
Q709,Q710 2213160 or DTC124ES or
Q708 2213290 or DTC114ES or
Q711,Q712 2213510 or DTA114ES or
2215770 KRA102M
2215810 KRC103M
2215960 KRC102M
Diodes
D409,D410 223163 or 1SS133 or
D709,D710,D746 223163 or 1SS133 or
223205 1SS270A
223205 1SS270A
D711 225338 SLR-332VR
D720 225339 SPR-39MVWF
D712-D717,D721 225340 SLR-332DU
D723 225374 SEL2E10C
U4
U5
U7
U8
U10
U9
ACOUSTIC CIRCUIT PC BOARD (NAAF-6632-4B/C)
ICs
Q401 22240191 NJM4565D-D
Q402,Q403 22240250 NJM2068L-D
Q404 222956 NJM2068D-D
Transistors
Q407,Q408 2211945 2SK246-GR
Q411,Q412 2211945 2SK246-GR
Q415,Q418 2213631 or RN1241-A or
2213632 RN1241-B
Diodes
D401-D408 223163 or 1SS133 or
223205 1SS270A
U3
Capacitors
C746 353721019 100uF0, 6.3V, Elect.
C714,C715 353741009 10uF, 16V, Elect.
C717,C718 353741009 10uF, 16V, Elect.
C423,C424 374721534 0.015uF±5%, 50V, Plastic
R437 5104341 N14RHC100KWT20Z, Bass
R438 5104341 N14RHC100KWT20Z, Treble
R461 5104407 N12RGLC250KWT20, Balance
Rotary switch
S401 25030415 NRSF-122-15SRB, Source direct
Push switch
S701,S702 25035699 NPS-111-S662
Jacks
P583 25045396 LGT1516-0101, Headphone jack
Socket AS
P461A 2009990296 NSAS-6P0429
NOTE:
<DT> : Asian model only for 120V
<PT> : Asian model only for 230V
NOTE:THE COMPONENTS IDENTIFIED BY MARK
ARE CRITICAL FOR RISK OF FIRE AND
ELECTRIC SHOCK. REPLACE ONLY WITH
PART NUMBER SPECIFIED.
Remote sensor
LED Holder
Resistors
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TEL 13942296513 QQ 376315150 892498299
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A-905TX
MICROPROCESSOR TERMINAL DESCRIPTION
Q701:HD404316-E30H
Pin No. Function I/O Descriptions
1 TEST ITest pin.
2RESET ISystem reset input pin.
3OSC1 IPins to connect the ceramic oscillator 4.0MHz.
4OSC2 O
5GND IGround pin.
6AVSS IAnalog reference ground for A/D converter.
7SEL IN-1 IRotary switch connection input pin for input selector.
8SEL IN-2 I
9KEY IN IOperation key connection pin.
10 905/909 IInitializing input pin for model selector.
11 RI OUT OSystem code output pin.
12 RI IN ISystem code input pin.
13 HP IN IHead phone switch position detector pin.
14 DIRECT IDirect switch position detector pin.
15 AVCC IAnalog reference voltage for A/D converter.
16 VCC IPower supply pin (+5V).
17 POFF IPower failure detector pin.
18 REM IN IRemote control signal input pin.
19 NC OSpeaker relay control signal output pin.
20 MUT LED OMUTING indicator control pin. Light on and off when the muting circuit turns on.
21 NC INo connection.
22 NC
23 VOL UP OVolume control output pin.
24 VOL DOWN OVolume control output pin.
25 POWER 2 Power amplifier control output pin.
26 INPMUT OMuting control output pin.
27 NC Connect to the ground.
28 NC Connect to the ground.
29 NC
30 NC
31 SBASS-1 OAcoustic Presence control output pin.
32 SBASS-2 O
33 SBASS-3 O
34 NC Connect to the ground.
35 NC Connect to the ground.
36 PROTECT ISpeaker protect signal detector pin.
37 SBASS LEDA OAcoustic Presence indicator output pin.
38 SBASS LEDB OAcoustic Presence indicator output pin.
39 NC Connect to the ground.
40 CLK OClock output pin of source selector and indicator ICs.
41 LAT OLatch output pin of source indicator IC.
42 DATA OData output pin of source selector and indicator ICs.
43 CE OChip enable output pin of source selector IC.
44 NC No connection.
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TEL 13942296513 QQ 376315150 892498299
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A-905TX
MICROPROCESSOR CONNECTION DIAGRAM
Q701:HD404316E04H
1
2
3
4
5
6
7
8
9
10
11
34
35
36
37
38
39
40
41
42
43
44
33
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
16
15
14
13
12
SBASS-3
SBASS-2
SBASS-1
NC
NC
NC
NC
INP MUT
POWER2
VOL DOWN
VOL UP
TEST
RESET
OSC1
OSC2
GND
AVSS
SEL IN-1
SEL IN-2
KEY IN
905/909
RI OUT
NC
NC
PROTECT
SBASSLEDA
SBASSLEDB
NC
CLK
LAT
DATA
CE
NC
NC
NC
MUT LED
RELAY
REM IN
POFF
VCC
AVCC
DIRECT
HP IN
RI IN
Q708
Q912
+5V
+5.6V
S401
PHONES
P583
P306
RI Q704
+5V
ACOUSTIC
PRESENCE
S702
INPUT
SELECTOR
R732
Q703
Q301
TC9273N-010
Q707
74HC595
GREEN
RED
Q702 TA7291S
Q505,Q506
MICROPROCESSOR
Q701
HD404316-E30H
POWER
S701
U701
D723
Q415-Q418
R459
SPEAKER
RELAY
SWITCH
POWER FAILURE
DETECTOR
SOURCE DIRECT
SWITCH
PROTECTER DETECTOR
CIRCUIT
ACOUSTIC
PRESENCE
INDICATOR
ACOUSTIC
PRESENCE CIRCUIT
VOLUME
INDICATOR
SOURCE INDICATOR
DRIVER
INPUT SELECTOR
SYSTEM RESET
BUFFER
MOTOR VOLUME
DRIVER IC
POWER AMPLIFIER
CIRCUIT
POWER AMPLIFIRE
CONTROL
INPUT MUTING
VOLUME
REMOTE SENSOR
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TEL 13942296513 QQ 376315150 892498299
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R569 R570
R568
R567
R561 R562 L502
L502
C517
R565
R564
D911
C914
C914
R563
P502A
C919
R708
D918
C920
C920
C917
C916
D707
R914
R915
D913
D912
L501
L501
C915
C915
P902B
B
B
BC C C CE
E
E
P504
IID
R912
R913
J547
J541 J545
J539
J537
R560
R558
R556
J536
J543
R576
Q522
Q530
Q520
Q518 Q516
R546
R550 R548
R544
R574
R572
R575
C515
R555 R559
Q519
Q521
Q515
Q529
Q517
R553
R551
R545
R543
R571
R573
J542
R549
R554
C518
R566J540
C516
R552
J529
J544 J546
J528
P503
J548
JL582B
R595 J514
J515
J519
J518
J517
R594
R596
R593
P501A
J524
J538
J901
P586A
P585A
J520
J516 J522
J521 J523
R547
J535
R557
L505L503
L506
J554
L504
J530
J04A
J03A
C531
Q532
R603
R601
R605
R607
R608
C532
R602
Q531
R604
J03B
J04B
R606
R610
C533
Q533
R739
R740
J549
J527
J902
+B
-B
Q523 Q527 EB
Q525 Q526 Q528 Q524
J550
+Vcc
-Vcc
ID
ID
UP
UP
J531
J532
J533
J534
P591B
P592B
P591A P592A
C912
C913
J05B
P911BP912B
/P914B /P913B
Trimming resistor
R576
Test point
P504
Trimming resistor
R575
Test point
P503
Rch
Lch
Main circuit PC board
NADG-6630
1. Before Idling adjustment, turn the trimming resistors R575, R576 to counter clockwise.
2. Connect the DC voltmeter to terminal P503, P504.
3. After turn POWER to ON, adjust the trimming resistors R575, R576 so that the reading
of voltmeter becomes 2.0 mV.
4. After adjustment, attach the top cover.
5. Confirm the voltage of above points after five minutes.
6. When less than 2.5 mV : Readjust the trimming resistors above so that the voltage becomes 3.0 mV.
When 2.6 mV to 4.0 mV : It is not necessary to adjust.
When more than 4.1 mV : Readjust the trimming resistors above so that the voltage becomes 3.5 mV.
Note:No load and No signal
Input
50Hz
Square wave
GND
3.3k
10k
1SS133 3.3k
0.01 F
Output
GND
Unit
Speaker
terminal
Load
Oscillo-
scope
Attenuator
Differentiator
AF Oscillator CD
Terminal
0.1 F 35Vp-p
Differentiator
Confirmation of Current detection circuit
1.Connect Differentiator below and apply the 50Hz square signal to the CD terminal.
2.Adjust the attenuator or Volume so that the output level becomes 35V p-p.
3.Confirm that the speaker relay turns OFF when a 0.5 ohm load is connected.
ADJUSTMENT PROCEDUERS
IDLING CURRENT ADJUSTMENT
CONFIRMATION OF PROTECTION CIRCUIT
CONFIRMATION
A-905TX
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TEL 13942296513 QQ 376315150 892498299
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A-905TX
OOOOOOO
############
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2
1
2
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3
PAD ASSEMBLY PROCEDURES-1
ASSEMBLING OF PAD A
: Line shows folding direction
: Line shows folding direction
Procedures : 1 to 5
Pin mark side
Other side
Pin mark
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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A-905TX
OOOOOOO
############
1
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4
3
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2
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3
3
4
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4
3
3
4
5
5
6
6
6
6
: Line shows folding direction
Procedures : 1 to 5
PAD ASSEMBLY PROCEDURES-2
ASSEMBLING OF PAD B
Other side
Pin mark side Pin mark
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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A-905TX
PACKING VIEW
PART-XX
PARTS LIST
6
8
1
4
5
7
3
2
14
10 13
11
NOTE:
<DT> : Asian model only for 120V
<PT> : Asian model only for 230V
REF NO. PART NO. DESCRIPTION
1 29091886 Pad A
2 29091887 Pad B
3 29095835 Protection sheet 0.515*650*550
4 29110149 Tape
5 282301 Staple
6 29110141 Tape
7 29053720 Carton box
8 29362820 Label EAN
10 24140456 RC-456S, Remote controller
11 3010054 Battery, UM-3
13 29343066 Instruction manual E
29343065 Instruction manual CT
14 29100180 Accessory bag
Bottom side
Bottom side
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TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
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A-905TX
http://www.onkyo.co.jp/
HOMEPAGE
ONKYO U.S.A. CORPORATION
18 Park Way, Upper Saddle River, N.J. 07458, U.S.A.
ONKYO EUROPE ELECTRONICS GmbH
Industriestrasse 20, 82110 Germering, GERMANY
ONKYO CHINA LIMITED
Units 2102-2107, Metroplaza Tower I, 223 Hing Fong Road, Kwai Chung,
N.T., HONG KONG Tel: 852-2429-3118 Fax: 852-2428-9039
Sales & Product Planning Div. : 2-1, Nisshin-cho, Neyagawa-shi, OSAKA 572-8540, JAPAN
Tel: 072-831-8111 Fax: 072-833-5222
ONKYO CORPORATION
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