SKW-570 : POWERED SUBWOOFER / ADJUSTMENT OF IDLING CURRENT
7
Q
Q
TEL 13942296513 QQ 376315150 892498299
3
[When]
1. Exchange transistors (Q505 - Q519).
2. Exchange MAIN PC board ass'y (NAAF-8829).
[Procedure]
<Note> No speaker load and No input signal.
1. Short test point P631 for amplifier is under active mode.
2. Adjust the trimming resistor R544 so that the reading of multimeter becomes 52 ohm to 53 ohm.
3. Connect the DC voltmeter to test point P531. <Fig-1>
4. Connect the power cord into the AC outlet.
5. Confirm the voltage of above point after 6 minutes to 8 minutes. (Heat running)
6. When less than 3.20 mV : Readjust the trimming resistor above so that the voltage becomes 4.5 mV to 5.0 mV.
When 3.30 mV to 5.20 mV : Not necessary to adjust.
When 5.21 mV to 10.0 mV : Readjust the trimming resistor above so that the voltage becomes 5.0 mV to 5.5 mV.
When 10.1 mV to 20.0 mV : Readjust the trimming resistor above so that the voltage becomes 5.6 mV to 6.0 mV.
7. Disconnect the power cord from the AC outlet.
8. Disconnect the DC voltmeter.
6
3
1
5
1
5
0
8
9
2
4
9
8
2
HTP-570
9
9
TEL 13942296513 QQ 376315150 892498299
TEL
13942296513
Trimming resistor
R544
Test point
P531
Test point
Q
P531
Q
100 ohm
(1/4W)
<Fig-1>
7
3
DC voltmeter
9
8
0
5
1
5
1
3
6
MAIN PC board ass'y "NAAF-8829"
2
4
9
8
2
9
9
w
w
w
.
xia
o
y
u
1
6
3
.
c
o
Test point
P631
Short
m
Page 3
HTP-570
EXPLODED VIEWS-1
Q
TEL 13942296513 QQ 376315150 892498299
Q
SKW-570 : POWERED SUBWOOFER
TEL
3
P901
A102
A103
A104
x 2 pcs.
7
13942296513
6
A05
x 2 pcs.
A02
3
1
SP11
x 10 pcs.
A03
A06
A02
U06
5
A101
1
A07
5
Q516
Q541
A01
0
A08
x 2 pcs.
A05
Q515
A07
Q
A11
Q
E801
7
3
SP12
x 4 pcs.
6
8
3
1
9
5
1
2
5
0
4
9
See "EXPLODED VIEWS-2"
8
9
2
8
4
9
2
8
2
9
9
9
TEL 13942296513 QQ 376315150 892498299
9
w
w
w
.
x
A05
x 5 pcs.
i
a
U01
o
SP13
x 2 pcs.
y
u
1
6
3
.
U03
c
T901
o
HTP-570
m
F901
Page 4
HTP-570
EXPLODED VIEWS-2
Q
TEL 13942296513 QQ 376315150 892498299
Q
SKW-570 : POWERED SUBWOOFER
TEL
3
7
13942296513
6
SP08
3
1
5
1
5
0
Q
Q
----- SP01a/b (Subwoofer ass’y) (All) -----
8
----- SP02a/b (Subwoofer ass’y)
(Without AMP unit, Speaker unit and Power transformer) -----
NOT MAGNETICALLY SHIELDEDNOT MAGNETICALLY SHIELDED
Q
3
7
8
6
3
9
1
5
4
0
9
<Note>
Cannot remove the speaker grill.
8
9
8
2
4
9
2
8
2
9
9
9
TEL 13942296513 QQ 376315150 892498299
9
w
w
w
.
TERMINAL :
Brown / Black
x
i
SP68SP66
TERMINAL :
Tan / Black
a
o
NOT MAGNETICALLY SHIELDEDNOT MAGNETICALLY SHIELDED
y
u
1
6
3
.
c
"SKB-570 <R>""SKB-570 <L>"
o
m
HTP-570
Page 7
HTP-570
A
BCDEFGH
SCHEMATIC DIAGRAM
SKW-570 : POWERED SUBWOOFER
Q
1
Q
LINE INPUT
P301
C955
223J
3
E801
R301
1K
6
C301
224
R302
(MPP)
OUTPUT
LEVEL
7
TEL 13942296513 QQ 376315150 892498299
2
C951
3
TEL
13942296513
220/16
C952
220/16
1
3
C302
47/50
20KB
MTZJ15C
MTZJ15C
3.3K
3.3K
D951
D952
5
3
2
47K
R303
27K
R304
R951
(2W)
POWER NEED TO CONFIRM
R952
(2W)
1
Q301(1/2)
NJM4558LD
8
1
4
R305
33K
C303
NC
5
47K
0
R307
2.2K
R306
Q
Q
P501B
NC
J316
C502
3
(1/2W)
12K
1SS133
NC
7
R651
D651
C501
47/50
6
C527
1/50
8
R501
1K
R502
3
47K
1
R510
100K
9
5
2
U01
R505
1K
(1/4W)
Q501
2SC2240-BL
0
C503
224J
R521
220
0
5
1
D501
MTZJ5.6B
4
9
8
MAIN PC BOARD
R506
1K
(1/4W)
Q502
2SC2240-BL
-0.6
R522
220
9
8
R503
5.6K
Q503
2SC2240-BL
R504
2.2K
2
4
R509
9
1K
R527
270
C504
220/16
2
C505
020
R507
33K
8
0
R508
47
(1/4W)
9
R511
82
(1/4W)
Q505
2SA949-Y
Q507
9
2
2SA949-Y
9
9
2SC2229-Y
R512
68
(1/4W)
NAAF-8829
TEL 13942296513 QQ 376315150 892498299
R513
82
Q509
C506
R515
12K
R516
12K
Q510
(1/4W)
R514
82
2SA949-Y
070
2SC2229-Y
Q506
4
5
w
w
w
10/50
5.6K
C601
R601
100K
Q301(2/2)
NJM4558LD
5
6
D601
MTZJ2.7B
180
R602
R604
C602
10/50
.
xia
8
4
R603
150K
7
D602
MTZJ2.7B
D603
1SS133
820K
120K
R614
39K
R611
R612
6
2SC1740S-S
470K
R613
C950
104/50
R605
22
o
C603
470/16
P633
y
39K
R609
NC
Q602
KRC103M
u
R610
560K
1
Q603
D605
1SS133
3
.
Q604
2SA933S
R617
1K
R615
22K
c
R619
22K
R620
100K
R616
100K
D607
1SS133
o
m
REDBLUE
LED
Q605
2SA933S
R621
1K
P632A
Q606
KRA103M
P631
2SA933S
Q607
R622
10K
5.0
R624
100K
R623
100K
Q608
2SC1740S-S
R626
2.2M
0.05
0.6
R625
180K
R627
680K
C604
33/35
Page 8
HTP-570
NOTE
Q
7
Q
3
<Note>
NC : No mount of parts.
6
3
1
5
1
5
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
0
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.
TEL 13942296513 QQ 376315150 892498299
R513
82
(1/4W)
R514
82
R541
820
R542
150
R544
100B
ADJUST.
IDLING
(1/4W)
R517
3.3K
1
-1
Q541
2SC3423
TEL
Q517
2SA933S-S
R543
180
C517
10/50
13942296513
-1.6
C514
2SC2235-Y
101
Q518
1.6V
C528
Q519
2SA965-Y
(1/2W)
10/50
R528
390
C526
10/50
Q513
2SC5171
Q514
2SA1930
Q515
R526
82
(1/2W)
R531
0.22
(5W)
2SA1987-O/R
Q516
2SC5359-O/R
R533
3.3
(1W)
C519
224
C520
224
P531
SPEAKER
JL535A/B
Q
Q
!
4
2
9
8
CAUTION
FOR CONTINUED PROTECTION
AGAINST FIRE HAZARD, REPLACE
ONLY WITH FUSE OF SAME TYPE
VA
AND RATING INDICATED.
ATTENTION
AFIN D'ASSURER UNE PROTECTION
PERMANENTE CONTRE LES RISQUES
D'INCENDIE, REMPLACER UNIQUEMENT
VA
PAR UN FUSIBLE DE MEME TYPE
ET CALIBRATION COMME INDIQUE.
THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
THAT THE FUSE USED IS SLOW OPERATING TYPE
FOR CONTINUED PROTECTION AGAINST FIRE
HAZARD,REPLACE WITH SAME TYPE FUSE. FOR FUSE
RATING REFER TO THE MARKING ADJACENT TO THE SYMBOL.
CE SYMBOLE INDIQUE QUE LE FUSIBLE UTLISE EST
E LENT.POUR UNE PROTECTION PERMANENTE,N'UTILISER
QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST
INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.
0
5
1
5
1
3
6
7
3
9
8
9
2
8
4
9
2
8
9
2
9
9
TEL 13942296513 QQ 376315150 892498299
9
C604
33/35
1SS133
Q609
NC
w
D606
R628
330K
R629
NC
R701
NC
w
+5.6V
R904
1K
(1/2W)
D904
MTZJ5.6B
w
10K
R903
.
D902
RL1N4003
or GP104003E
R901
820
(1W)
D903
RL1N4003
R902
or GP104003E
(1W)
820
C909
22/50
xia
-56.5V
o
+56.5V
D901
D3SBA20
C905
5600/71(MPP)
5600/63(MDD)
C906
y
u
5600/71(MPP)
5600/63(MDD)
C903
1
C904
104J/100
(MPP TYPE)
6
104J/100
(MPP TYPE)
U03
P903A
3
POWER TRANSFORMER
PC BOARD
MDD
ONLY
T901
NPT-1578D
P901A
.
NAPS-8831
5A/125V
F901
c
o
J901
MD
P902A
m
P901
AC 120V / 60Hz
Page 9
HTP-570
A
BCDEFGH
SCHEMATIC DIAGRAM
SKW-570 : POWERED SUBWOOFER
3
2
R304
7
Q301(1/2)
NJM4558LD
8
4
R305
33K
C303
NC
27K
3
1
9
4
6
R307
47K
R306
2.2K
2
P501B
NC
2
3
J316
C502
NC
(1/2W)
12K
1SS133
9
R651
D651
R302
C302
47/50
20KB
3
47K
R303
Q
1
LINE INPUT
P301
C955
223J
E801
Q
R301
1K
224
C301
(MPP)
OUTPUT
LEVEL
TEL 13942296513 QQ 376315150 892498299
2
R951
(2W)
C951
3
T
E
220/16
L
C952
220/16
3.3K
POWER NEED TO CONFIRM
D951
MTZJ15C
1
D952
R952
MTZJ15C
(2W)
3.3K
C501
47/50
C527
1/50
6
1
R501
1K
R502
47K
R510
100K
5
5
U01
R505
1K
(1/4W)
Q501
2SC2240-BL
0
C503
224J
R521
220
1
D501
MTZJ5.6B
1
MAIN PC BOARD
R506
1K
(1/4W)
Q502
2SC2240-BL
-0.6
R522
220
3
R503
5.6K
Q503
2SC2240-BL
R504
2.2K
R509
1K
R527
270
C504
220/16
5
C505
020
R507
33K
0
R508
47
(1/4W)
R511
82
(1/4W)
Q505
2SA949-Y
Q507
2SA949-Y
0
NAAF-8829
Q509
2SA949-Y
070
2SC2229-Y
Q506
2SC2229-Y
R512
68
(1/4W)
C506
R515
12K
Q
R516
12K
Q510
R513
82
(1/4W)
R514
82
R541
820
R542
150
Q
R544
100B
ADJUST.
IDLING
(1/4W)
R517
3.3K
1
-1
Q541
2SC3423
8
<Note>
NC : No mount of parts.
Q518
2SC2235-Y
1.6V
Q517
2SA933S-S
C517
10/50
10/50
C528
3
6
7
3
R543
180
-1.6
Q519
2SA965-Y
C514
101
R528
390
(1/2W)
C526
10/50
Q513
2SC5171
1
Q514
2SA1930
9
R526
82
(1/2W)
R531
0.22
(5W)
2SA1987-O/R
1
5
Q516
Q515
2
2SC5359-O/R
0
5
R533
3.3
(1W)
C519
224
C520
224
P531
NOTE
THE COMPONENTS IDENTIFIED BY MARK ARE CRITICAL FOR SAFETY
4
SPEAKER
9
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.
JL535A/B
9
8
8
CAUTION
FOR CONTINUED PROTECTION
AGAINST FIRE HAZARD, REPLACE
ONLY WITH FUSE OF SAME TYPE
VA
AND RATING INDICATED.
ATTENTION
AFIN D'ASSURER UNE PROTECTION
PERMANENTE CONTRE LES RISQUES
D'INCENDIE, REMPLACER UNIQUEMENT
VA
PAR UN FUSIBLE DE MEME TYPE
ET CALIBRATION COMME INDIQUE.
THIS SYMBOL LOCATED NEAR THE FUSE INDICATES
THAT THE FUSE USED IS SLOW OPERATING TYPE
FOR CONTINUED PROTECTION AGAINST FIRE
HAZARD,REPLACE WITH SAME TYPE FUSE. FOR FUSE
RATING REFER TO THE MARKING ADJACENT TO THE SYMBOL.
CE SYMBOLE INDIQUE QUE LE FUSIBLE UTLISE EST
E LENT.POUR UNE PROTECTION PERMANENTE,N'UTILISER
QUE DES FUSIBLES DE MEME TYPE. CE DARNIER EST
INDIQUE LA QU LE PRESENT SYMBOL EST APPOSE.
4
2
9
!
2
8
2
9
9
9
TEL 13942296513 QQ 376315150 892498299
9
4
5
C601
10/50
5.6K
R601
w
100K
R602
Q301(2/2)
NJM4558LD
5
6
R603
D601
MTZJ2.7B
180
R604
C602
10/50
w
8
4
150K
7
D602
MTZJ2.7B
w
D603
1SS133
R605
22
C603
470/16
P633
39K
NC
.
R610
560K
R609
Q602
KRC103M
820K
120K
R614
39K
x
R611
R612
Q603
2SC1740S-S
470K
R613
D605
1SS133
C950
104/50
i
Q604
2SA933S
R617
1K
R615
22K
a
R619
22K
R620
100K
R616
100K
D607
1SS133
LED
Q605
2SA933S
R621
1K
P632A
o
REDBLUE
Q606
KRA103M
P631
2SA933S
y
Q607
R622
10K
5.0
R624
100K
R623
100K
Q608
2SC1740S-S
R626
2.2M
u
0.05
0.6
R625
180K
1
R627
680K
C604
33/35
6
Q609
NC
D606
1SS133
R628
330K
R629
NC
R701
NC
3
+5.6V
R904
1K
(1/2W)
10K
D904
MTZJ5.6B
.
R903
820
820
C909
22/50
R901
(1W)
R902
(1W)
D902
RL1N4003
or GP104003E
D903
RL1N4003
or GP104003E
c
-56.5V
o
+56.5V
D901
D3SBA20
C905
5600/71(MPP)
5600/63(MDD)
C906
m
5600/71(MPP)
5600/63(MDD)
C903
C904
104J/100
(MPP TYPE)
104J/100
(MPP TYPE)
U03
P903A
POWER TRANSFORMER
PC BOARD
MDD
ONLY
T901
NPT-1578D
P901A
NAPS-8831
5A/125V
F901
J901
MD
P902A
P901
AC 120V / 60Hz
Page 10
HTP-570
A
BCD
PRINTED CIRCUIT BOARD VIEWS-1
SKW-570 : POWERED SUBWOOFER
Q
1
Q
3
6
MAIN PC BOARD (NAAF-8829)U01
7
Component side
TEL 13942296513 QQ 376315150 892498299
2
BCE
B
CE
Q541
3
TEL
4
13942296513
R701
3
Q515
22
J323
17
+Vcc
J334
CEB
25
E701
J308
Q516
1
5
25138829A
NCAF-8829
1
J307
J314
J324
12
R531
R533
C906
C951
J955
R952
7
C952
D952
C955
C519
D951
P301
R545
R544
P531
J325
J332
7
C906
D902
1
Q513
R526
-Vee
J322
J956
P301
Q514
R508
C520
7
R543
R542
C526
J320
J352
R901
5
J306
ECB
ECB
15
R514
Q510
Q506
Q507
J321
+Vcc
J340
7
C903C904
REDREDBLK
R902
R301
0
R512
JL535B
RED
Q
20
J330
J333
17
R951
P903A
D903
C301
C527
15
R528
C528
J331
17
R517
Q517
Q518
R541
12
J311
J312
J313
7
J319
Q
JL535A
BLACK
C909
D901
R302
R510
J303
J304
C514
R516
C502
J351
D501
J305
Q519
R515
3
R904
R903
D904
C517
C504
P502A
12
Q504
R507
7
R509
R527
C905
8
R513
C505
C503
R502
6
J346
R628
D606
R629
R504
Q502
3
R625
R627
J347
C604
R651
Q503
C506
R522
1
C950
Q609
9
R503
J310
Q501
R501
C501
R321
C905
5
7
Q604
R623
R624
R626
Q608
R302
20
Q505
1
J318
R619
Q606
2
D651
Q509
R511
R505
R506
R521
5
7
J338
R615
Q607
7
J348
J316
J326
J329
J301
J302
Q302
0
J349
J350
7
4
Q303
7654 3218
7
R304
R303
J327
7
R616
R617
J341
R611
Q603
R622
C302
81234567
R306
R307
C303
R305
8
Q301
R610
9
C313
R316
R312
R314
C311
R315
J309
7
9
R621
P632A
J337
P631
C316
R320
R319
R317
C314
C312
E801
R609
Q602
7
J344
C315
R313
2
1
2345 678
8
P912
P911
C601
R601
R602
4
C602
R604
R603
D601
D602
D603
R605
C603
P633
J335
Q605
R620
D605
R614
R613
R612
J342
R311
9
J336
2
P301A
8
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HTP-570
A
PRINTED CIRCUIT BOARD VIEWS-2
SKW-570 : POWERED SUBWOOFER
7
Q
Q
1
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3
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POWER TRANSFORMER PC BOARD (NAPS-8831)U03
Component side
5
T901
BCD
1
5
0
P905A
15
15
J905
J904
15
15
J903
J902
T901
8
2
9
810121416
4
9
8
2
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13942296513
P902A
P906A
P907A
J901
2356
1
AC-G AC-H
F901A
Q
AC-G
AC-H
1
5A/125V
Q
NCPS-8831
25138831
5
1
3
6
7
3
RISK
-REPLACEFUSE
AS MARKED.
P910A
F901B
F901
OF
FIRE
P910A
P903A
1
5
P903A
0
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EXPLODED VIEWS PARTS LIST
REF. NO.PART NAMEDESCRIPTIONQ'TY PART NO. (SN)REMARKS
! ARE CRITICAL FOR RISK OF FIRE AND
ELECTRIC SHOCK. REPLACE ONLY WITH PART
NUMBER SPECIFIED.
1
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<Notes>
(B) : Black model
(S) : Silver model
<L> : Lch
<R> : Rch
0
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HTP-570
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8
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!
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A103 KNOB(VOL)128326463
A104 SCREW3SMS8W.SW+14B(3BC)2801433GR
F901 FUSE5A-UL/T-2331252326GR
P901 AC CORDAS-UC-21253368BLTK
P901 orAC CORDAS-UC-2(1) 253368AYUN
T901 P TRANSNPT-1578D12301948
E801 WIRE TIEBSK-11260208
U01MAIN PC BOARD ASS'YNAAF-8829-1AA *11B138529-1AA
U03
U06HOLDER PC BOARDNAETC-88341---NSP
SPEAKER SECTION (SKW-570)
SP01aSUBWOOFER ASS'Y(ALL)SKW-570 (B) MDD/MDC1000-SKW570BMDC(B)
SP01bSUBWOOFER ASS'Y(ALL)SKW-570 (S) MDC1000-SKW570SMDC(S)
4229651
SP02aSUBWOOFER ASS'YSKW-570 (B) MDD/MDC1???(B)
SP02bSUBWOOFER ASS'YSKW-570 (S) MDC1???(S)
<Note>
SP01a/b = ALL
SP02a/b = Without AMP unit, Speaker unit and Power transformer
SP03PLASTIC FOOTBLACK4243-P46001B-00
SP04WOOFER10" (25) 4 ohm 80W (ONKYO ELE)1W2301G
SKF-570 (B) <L> / <R> : FRONT SPEAKERS
SKF-570 (S) <L> / <R> : FRONT SPEAKERS
SP21aSPK SYSTEM ASS'YSKF-570 (B) <L>1000-KF570LBMDD(B), <L>
SP21bSPK SYSTEM ASS'YSKF-570 (B) <R>1000-KF570RBMDD(B), <R>
SP21cSPK SYSTEM ASS'YSKF-570 (S) <L>1000-KF570LSMDC(S), <L>
SP21dSPK SYSTEM ASS'YSKF-570 (S) <R>1000-KF570RSMDC(S), <R>
SP23WOOFERW1278F (ONKYO JITRA)1W1278F
SP24TWEETERBLACK1302-DBF5700200
R624 CARBON RR16J-100K1417341044T
R625 CARBON RR16J-180K1417341844T
R626 CARBON RR16J-2.2M1417342254T
R627 CARBON RR16J-680K1417346844T
R628 CARBON RR16J-330K1417343344T
R651 METAL O RRS1/2WBJ-12K1443521234T
R901 METAL O RRS1WBJ-8201443628214T
R902 METAL O RRS1WBJ-8201443628214T
R903 CARBON RR16J-10K1417341034T
R904 METAL O RRS1/2WBJ-1K1443521024T
R951 METAL O RRS2WBJ-3.3K1441723324F
R952 METAL O RRS2WBJ-3.3K1441723324F
F901AFUSE HOLNSCT-1P2506125052609T
F901AorFUSE HOLNSCT-1P2031(1) 25052133T
F901BFUSE HOLNSCT-1P2506125052609T
F901BorFUSE HOLNSCT-1P2031(1) 25052133T
JL535ASOCKET ASNSAS-2P133512009990876UL