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A
SCHEMATIC DIAGRAMS-3
POWER AMPLIFIER SECTION
NAAF-8695
U02
POWER AMPLIFIER PC BOARD
1
Lch
Q501
2SC1622A
C501
47/50
R507
PREL
470
R537
R539
180
180
C507 NC
-15.2V
Q505
2SC2712-GR
2
C595
100/6.3
R596
Q506
47K
2SC2712-GR
C508
J507B
NC
R538
R540
180
180
C502
470
PRER
Q504
R508
47/50
2SC1622A
Q502
2SC1622A
Rch
3
RCPOWER
P4101B
To NADG-8692
(SD-1 : G4)
Refer to following table about the parts displayed by mark "
R513
R523
R553
R555
Q509,Q510,
4
R514
R524
R554
R556
Q511,Q512,
Q515,Q516
MDD1N, MDS4N
3.9K
4.7K
560F
NO
2SA949-O,Y
MGQ3P, MDT3N,
3.3K
6.8K
680F
4.7KF
2SA1015-GR
MGT3P, MGR6P
B
R541
22(1/2W)
Q509
+20.4V
Q515
Q503
2SC1622A
C511
2P
+0.6V
Q511
Q517
Q519
R542
22(1/2W)
Q520
Q518
Q552
Q512
C512
2P
J504B
Q510
Q516
J507A
P903
<Note>
(SD-7 : C3)
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.
".
Q517,Q518,
Q551,Q552,
Q553,Q554
Q555,Q556
Q519,Q520
Q581,Q582
2SC2229-O,Y
2SC2713-GR
2SC3421-O,Y
2SA1358-O,Y
2SC1815-GR
2SC2712-GR
2SC2235-O,Y
2SA965-O,Y
C
+22.1V
J503B
Q553
+0.6V
+1.1V
!
Q557
Q561
Q551
!
-1.1V
-0.6V
Q555
Q559
-22.1V
R515
1.2K
R543
R517
Q581
L
470
100K
C513
R545
R
NC
56K
For Idling check
C514
R546
NC
56K
R516
470
100K
R544
R518
1.2K
J506C
Q560
Q556
!
!
Q558
Q582
Q554
PROTECT
+22.1V
+
C953
3300/35
J503A
J504A
4
1
+
C954
D951
3300/35
D3SBA20
-22.1V
C952
334
J505A
J506A
P504
0V
-BA
+3.2V
RLGND
SPRLF
FAN
P907A
To T901
To NAETC-8697
(SD-7 : C2)
Q557,Q558
Q559,Q560
Q561,Q562
R583,
Q583
R584
2SC4511-O,Y
2SA1725-O,Y
2SA1163-BL
4.7K
2SC3851-O,Y
2SA1488-O,Y
2SA1162-GR
5.6K
D
R567
390(1/2W)
R568
390(1/2W)
J551
NC
Q583
R571
5.6(1/2W)
L571
S-1.3C
J501B
J502B
L572
J505C
S-1.3C
D591
R572
1SS352
5.6(1/2W)
C591
J552
104Z
R593
100K
R5581
3.9K
D581
UDZS5.1B
NOTE
!
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.
DR-UN7
E
HPL
GND
HPR
C559
472
P501
L
FRONT
SPEAKERS
R
GND
NC
NAETC-8705
U09
HEADPHONE JACK
PC BOARD
P871
5
4
L871
L-OUT
2
GND
3
R-OUT
7
L872
8
L873
1
P874
C873
P873
102
R871
NC
C877
104
L874
L875
L871 - 873 : BK1608LM182-T
L876
L877
L874 - 877 : BK1608HS102-T
R872
NC
J502A
J501A
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