Onkyo A-9070 Service Manual page 11

A
Schematic Diagrams - 6
Headphone AMP.
1
Model No. A-9000R/A-9070 SCHEMATIC DIAGRAM (PART-6) HeadPhone SECTION
BAHP-0992
13
12 HPL
11 GNDA
10 HPR
2
9 -15V
8
7 +15V
6 GND_DG
5 HP_DET
4 HPRL
3 +12V
2 GND_RL
1 MUTE_PRE
3
4
B
Discrete
R615
Buffer
6.8(1/4W)
C605
330/35
R616
Q614
6.8(1/4W)
2SC2229-Y
Q612
R601
2SA1312-GR
2SC3324-GR
100
Q613
TEST_LAND
Q620
2SC2229-Y
Q618
R618
2SA1312-GR
2SC3324-GR
100
Q619
TEST_LAND
R629
6.8(1/4W)
C608
330/35
R630
Discrete
6.8(1/4W)
Buffer
C
NRL-2P2A-DC12-178
RL601
P610
5
3
1/2W
C603
R611
+
47 10
220/10
8
R613
12
1K
R614
1K
1/2W
C604
R612
+
D605
47
220/10
1SS352
C611
104J
Q604
RN1402
P611
A-9000R / 9070
D
4
HP_L 1 1 HP_L
GND 2 2 GND
9 HP_R 3 3 HP_R
1 GND_DG 4 4 GND_DG
HP_DET 5 5 HP_DET
P602A
RETAINER(EARTH)
NTM-1P233(M1969) NEJITANSI_ST3
P605
E
BAETC-0993
5
4
2
3
7
8
1
C615
P602
MSJ-064-05A_SR
104J
3_5HPSTSW2
P604