Tone/Balance/Selector Section - Onkyo TX-8020B Service Manual

A
SCHEMATIC DIAGRAMS-08(PART-8)
TONE/ BALANCE/ SELECTOR SECTION
MODEL NO. TX-8020
1
BAETC1442
+3.3VMPU
GNDDIS
GNDDIS
BALANCE
TREBLE_B
TREBLE_A
+3.3VDIS
2
+3.3VDIS
GNDDIS
GNDDIS
3
SELA
SELB
BASS_A
BASS_B
4
B
SCHEMATIC DIAGRAM
7 7 +3.3VMPU
6 6 GNDDIS
5 5 GNDDIS
4 4 BALANCE
3 3 TREBLE_B
2 2 TREBLE_A
1 1 +3.3VDIS
TREBLE / BALANCE PC BOARD
U0033
1 1 +3.3VDIS
GNDDIS
2 2
GNDDIS
3 3
4 4 SELA
5 5 SELB
6 6 BASS_A
7 7 BASS_B
INPUT/ BASS PC BOARD
U0032
C
(Part-8)
+3.3VMPU C751 C752
223K 50V 223K
R752
2
1 3
470k
4
R753
5
20KB
6
TP2
C753
GNDDIS
223K 50V
R754 R755
10k 10k
R756 R757
10k 10k
4 5
S751
EVEHC1F2524B
R758 R759
10k 10k
BASS_B
R760 R761
10k 10k
4 5
S752
EVEHC1F2524B
R762 R763
10k 10k
R764 R765
10k 10k
4 5
S753
EVEHC1F2524B
D
DISPLAY SECTION
50V
BALANCE
TREBLE
BAETC-1446
BASS
INPUT
SELECTOR
TITLE
Display Section (Part-8)
DESIGN
H.Suda
2013.04.09
TX-8020
E
DRAWING No
TX-8020
RC-202985
CHECK APPROV SHE
K.Ikeda S.Murayama
8 14
2013.04.09 2013.04.09