Pioneer SX-SW77 Service Manual page 13

5
÷ When ordering service parts, be sure to refer to "EXPLODED VIEWS and PARTS LIST" or
"PCB PARTS LIST".
÷ The > mark found on some component parts indicates the importance of the safety factor
of the part. Therefore, when replacing, be sure to use parts of identical designation.
÷
A
MAIN ASSY
WYXCN,WVXCN:AWK7883
KUXCN:AWK7884
6
64
65
75
76
67
DIRDO,DIRERR
100
5V -> 3V
IC951
TC74VHC08FTS1
17 22
14
DIR
FDTI
13 12
IC601
AK4117VF
3 5
8
SELECTOR
4
IC4602 DIGSEL
12
TC74VHC00FTS1
2 5
DIGITAL INPUT
DIGITAL DVD/DVR2 DVD/DVR1
(OPT) (OPT) (COAX)
PC/GAME DTV DVD SX-SW950
D
FL ASSY
(AWU8271)
S5961 S5962 S5963 S5964
STANDBY/ON VOL- VOL+ INPUT
SELECTOR
FL DRIVER
FL TUBE
IC5901 PT6315
V5901 AAV7104
5
6
: The power supply is shown with the marked box.
49
7
19
u-COM
69
IC5501
77
PDC128A
79
27
28
DASDA,DASCL,XDAPDN,DSPMUTE
35
71
74
DSP
5
IC801
6
1 DSPC56371AF180 7
73
SR OUT
CN5901
XKP3077
VE+5
1
XFLCS
2
FLCK
IC5902 3
GP1UM27XK0VF
FLDATA
4
FLDC- 5
IR
FLDC+
6
GNDD 7
KEY1
8
S5965
VFDP 9
SURROUND
REMOCON
10
GNDS 11
GNDS
12
KEY2 13
SX-SW77
6
7
SHUTDOWN/XOTW
13 14 24 25
29
DIGITAL AUDIO
30
PWM PROCESSOR
31
IC3101
TAS5508APAG
63
23-25 23-25
POWER IC POWER IC
IC3401 IC3301
TAS5112ADCA TAS5112ADCA TAS5112ADCA
50 51 34 35 50 51 34 35 50 51
46 47 38 39 46 47 38 39 46 47
+ + + +
- - - - -
SW C SR FR SL
C
CONNECT ASSY
(AWU8272)
CN5651
XKP3066
13
12
11
10
9
8
7
6
5
4
3
2
1
7
8
FLDAT
KEY&IR
37
IR
23-25
POWER IC
IC3201
CN5601
AKP7131
34 35
38 39
12 11
9 8
7
10
+ +
-
6 5
4 3 2 1
FL
1.GNDD
2.GNDD
3.VFDP
4.KEY2
5.FLDATA
6.REMOCON
7.XFLCS
8.FLCK
CN5652
9.VE+5
AKP7131
10.KEY1
7 1 11.F+
11
5
12.F-
8 2
9 3
6
12 10 4
ADE7113
8
A
B
C
D
E
F
13