Onkyo TX-SR402 Service Manual page 33

A
PRINTED CIRCUIT BOARD VIEWS-9
U18
TERMINAL PC BOARD
(NAPS-7876)
Component side view
1
from soldering side
1 3
U20
TERMINAL PC BOARD
(NAPS-7878)
2
Component side view
from soldering side
20
J6410
15
25137878
NCPS-7878
15 16 17
3
U23
HOLDER PC BOARD
(NAETC-7881)
Component side view
from soldering side
0
4
25137881
NCETC-7881
U26
THERMAL SENSOR PC BOARD
(NAETC-8256)
HT-R420 MDD, MDC ONLY
Component side view
from soldering side
5
0
25138256
NCETC8256
P6380
B
0
25137876
NCPS-7876
5 7
18 19
R6380
C
U19 POWER SUPPLY PC BOARD
(NAPS-7877)
Component side view
from soldering side
S902
S902
P922A
220V 120V
J6309
7
17
J6307
T3.15AL250V
T902
1 2 3 4
P913
T902
P923
8 7 5
9 8 7 6 5
R921 C921 D925
J6320
D923 D921 R924
Q921
E
B
D922
D924
R922
R923
+13VS
+13VS
C923
MPUGND
MPUGND
POWER
U25 TERMINAL PC BOARD
(NAETC-7884)
Component side view
from soldering side
U22 THERMAL SENSOR PC BOARD
(NAETC-7880)
TX-SR402 MGR, TX-SR8240 MGR
HT-R420 MPA, MWT, MPT ONLY
Component side view
from soldering side
R6380A
TX-SR402/8240/HT-R420
L L N N
P902
P926
P925
J6301
17
P921A
15
P902
J6303
P911
J6306
7
P918
C902
P917
C902
J6314
30
P912
7
P922
7
J6317
P921
J6318
15
J6319
22
+12V
GND
GND
CTLA
CTLB
VMUT2
VMUT1
RI
OPT2
DGND
OPT1
+5V
COAX
OPTOUT
1
25137880
NCETC-7880
JL6402C
+24V
TH1
+24V
D
E921