Onkyo DR-UN7

DR-UN7
SCHEMATIC DIAGRAMS-3
POWER AMPLIFIER SECTION
DR-UN7
GND
PREL GND
ACAMP1 ACAMP2
HPL
HPR
GND
PROTECT RCPOWER
RCPOWER
SPRLF
RLGND
-BA
FAN
PRER GND
PROTECT
PREL
PRER
NAAF-8695
To T901
(SD-7 : C3)
To NAETC-8697
(SD-7 : C2)
To NADG-8692
(SD-1 : G4)
R513
R514
3.3K
Q509,Q510,
Q511,Q512,
Q515,Q516
3.9K
6.8K
4.7K
L
R
R555
R556
R523
R524
R553
R554
560F 2SA949-O,Y
2SA1015-GR4.7KF680F
MGQ3P, MDT3N,
MGT3P, MGR6P
MDD1N, MDS4N
Q517,Q518,
Q519,Q520
2SC2229-O,Y
2SC1815-GR
2SC2713-GR
2SC2712-GR
Q581,Q582
Q551,Q552,
2SC3421-O,Y
2SC2235-O,Y
Q553,Q554 Q555,Q556
2SA1358-O,Y
2SA965-O,Y
Q557,Q558
2SC4511-O,Y
2SC3851-O,Y
Q559,Q560
2SA1725-O,Y
2SA1488-O,Y
Q561,Q562
Q583
2SA1163-BL
2SA1162-GR
4.7K
5.6K
R583,
R584
NO
R512
820
R526
18K
R528
18K
R585
33K
R551
1.5KF
R525
18K
R582
12K
R521
39(1/2W)
R577
560
C582
NC
R527
18K
R557
82(1/2W)
R559
0.22 (2W)
C951
334
R511
820
C952
334
R562
0.22(2W)
R560
0.22(2W)
R539
180
R537
180
R540
180
R507
470
R509
820
R510
820
R508
470
C508
NC
R506
22K
C506
22/16
R505 22K
R503
12KD501
1SS352
C507
NC
R561
0.22 (2W)
R536
39(1/2W)
R538
180
C512
2P
C511
2P
R519
39(1/2W)
C581
NC
R593
100K
R596
47K
R597
12K
R598
22K
R599
2.2K
P903
R522
39(1/2W)
R520
39(1/2W)
R558
82(1/2W)
R578
560
D502
1SS352
R504
12K
D951
D3SBA20
4
3
1
2
C595
100/6.3
C505
22/16
D503
UDZS5.6B
R513
R514
C517
10/50
C518
10/50
C591
104Z
Q503
2SC1622A
Q595
2SC2712
Q596
2SA1162-GR
Q502
2SC1622A
Q504
2SC1622A
Q562
2SA1162-GR
Q501
2SC1622A
C510
220/6.3
C509
220/6.3
C513
NC
C514
NC
R567
390(1/2W)
R568
390(1/2W)
L571
S-1.3C
J501AJ502A
J502B
JL502B
C556
C555
P501
GND
J501B
RL591
Q591
DTC123JS
Q592
DTA114YKA
R581
12K
P4101B
C553
473
C503
221
C504
221
D591
1SS352
D595
1SS355
Q509
Q511
Q517
Q519
R534
33(1/2W)
Q512
Q510
Q520
Q518
Q516
R552
1.5KF
Q552
Q554
Q556
Q555
Q553
Q559
Q557
Q560
Q558
C552
10/50
C551
10/50
Q561
Q581
R588
18K
R586
33K
Q582
Q515
C554
473
J503A
J505A
J504B
J503B
R592
82(1W)
R591
82(1W)
Q583
R587
10K
R541
22(1/2W)
R542
22(1/2W)
C541
100/35
+
C542
100/35
+
R535
39(1/2W)
R533
33(1/2W)
D504
UDZS5.6B
Q506
2SC2712-GR
Q505
2SC2712-GR
P907A
R575
22K
R573
33K
R574
33K
D581
UDZS5.1B
C583
1/50
J506A
J507B
J507A
R515
1.2K
R516
1.2K
R523
R524
C953
3300/35
+
C954
3300/35
+
R555
Q551
R553
R554 R556
R595
18K
R543
470
R545
56K
R546
56K
R517
100K
R518
100K
R544
470
C501
47/50
R501
56K
C502
47/50
R502
56K
R5581
3.9K
R5582
6.8K
R589
NC
R563
8.2(1/2W)
R564
8.2(1/2W)
R583
R584
R547
100K
R548
100K
J551
J504A
P504
C557
102
C558
102
R571
5.6(1/2W)
L572
S-1.3C
J552
R572
5.6(1/2W)
J505C
J506C
C525
22p
C526
22p
C559
472
Refer to following table about the parts displayed by mark " ".
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
U02
POWER AMPLIFIER PC BOARD
<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.
FRONT
SPEAKERS
L
R
NC
NC
102 102
GND
L-OUT
R-OUT
L871 - 873 : BK1608LM182-T
P873
P874
L872
C871
102J
C872
102J
P871
5
4
2
3
7
8
1
C877
104
JL502A
C873
102
L871
L873
L875
L877
L874
L876
P4003A
R871
NC
R872
NC
NAETC-8705
U09
HEADPHONE JACK
PC BOARD
PHONES
For Idling check
!
!
!
!
0V
+3.2V
+22.1V
-22.1V
+0.6V
-0.6V
+22.1V
-22.1V
+1.1V
-1.1V
+20.4V
-15.2V
+0.6V
L874 - 877 : BK1608HS102-T
To NASW-8701
(SD-5 : E3)
Lch
Rch
A
1
2
3
4
BCDE