Onkyo TX-NR838 Service Manual page 36

A B
SCHEMATIC DIAGRAMS-10
DISPLAY(PHONE/ LED) SECTION
1
MODEL NO.TX-NR838
SCHEMATIC DIAGRAM(PART-9)
DISPLAY(MIC)SECTION
2
BAETC-1548
U0045
MIC
MICDET
R7530
MIC_IN
5
100 GND_AUX
4 L7530
LBC2518T2R2M
2
1
P7530
3
MSJ-035-05C B AG SR type
4
5
MODEL NO.TX-NR838
SCHEMATIC DIAGRAM(PART-9)
DISPLAY(HEADPHONE)SECTION
BAETC-1550
HEADPHONE
6
*P7580
MSJ-064-05A SR
5
4
*L7580
LBC2518T2R2M
2
3
*L7581
7
LBC2518T2R2M
8
1
7
8
C D
MODEL NO. TX-NR838
SCHEMATIC DIAGRAM(PART-9)
DISPLAY(KEY)SECTION
BASW-1544
KEY
LEDPURE
KEY0
+5V_LED
GND_DG
KEY0_1
U0047
GND_DG
HPDET
*R7581
HPR
390 1/2W HP_GND
*R7580
HPL
390 1/2W
*L7582
LBC2518T2R2M
1 2 3
*P7582
Chassis GND
NC
TX-NR838
E F G
U0041
R7601
270
MODEL NO.TX-NR838 SCHEMATIC DIAGRAM (PART-9)
DISPLAY SECTION
BAPS-1551
U0048
-VP
FLAC1_1
FLAC2
*R960
*D960
SEC3 1
TP961
NC 8.2 RL1N4003
1/2W
SEC3_2
H I
MODEL NO.TX-NR838
SCHEMATIC DIAGRAM(PART-9)
DISPLAY(VOLUME)SECTION
BASW-1547
U0044
MASTER VOLUME
LEDTHRU
+5V_DIS
LEDVOL
+3 3V_VDD
VOLA
VOLB
GND_DG
R7564
3
10k
R7563
1
10k
*Q960
*D961 *R965
2SC2881-Y(TE12L,CF) +3.3V
RL1N4003 4.7
FLAC1
*R961 SEC3_2
FLAC2
NC
+3 3V
*R953
NC
*R950 *R951
1.5 33 1W
*R952
1W
22
TX-NR838
J K
Q7597
DTC123JKA
2