Main Assy (4/5) - Pioneer SX-SW77 Service Manual

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3.5 MAIN ASSY (4/5)

A
B
A 2/5, 3/5
AUDIO
1-A6,3-D5
A 1/5
UCOM
5-A4
for control by PC
C
STBY
VS+5
CN3171
B5B-PH-K-S
R3183
SCL 1
R3184
SDA 2
VS+5 3
R3185
RST 4
GNDD 5
D
STBY
VS+3R3
IC3181
SN74AHC1G04DBV
3 2
4
5 1
IC3182
T-TPS3825-33DBVR
3 2
4 R3181
4.7k
5 1
E
GNDD
RESET CONTROL CIRCUIT
F
A 4/5
20
1
2
UCOM
R3103
4.7
R3113
3.3
GNDA
71
XDAPDN
35
DSPMUTE
R3105
1
R3153
70
0
XDARST
SX-SW77
2
3
DIGITAL AUDIO
PWM PROCESSOR
VS+3R3
64 63 62 61 60 59 58 57
1
VRA_PLL
2
PLL_FLT_RET
3
PLL_FLTM
4
PLL_FLTP
5
AVSS
6
AVSS
7
VRD_PLL
8
AVSS_PLL
9
AVDD_PLL
TAS5508APAG
10
VBGAP
11
/RESET
12
/HP_SEL
13
/PDN
14
/MUTE
15
R3104
DVDD
220
16
RAB4C221J
DVSS
17 18 19 20 21 22
X3101
ASS7062
R3106
1M
3
4
(SW)
(C)
56 55 54 53 52 51 50 49
48
VR_PWM
47
PWM_P_4
46
PWM_M_4
45
PWM_P_3
44
PWM_M_3
43
PWM_P_2
42
PWM_M_2
41
PWM_P_1
IC3101 40
PWM_M_1
39
VALID
38
DVSS
37
/BKND_ERR
36
DVDD
35
DVSS
34
DVSS
33
VR_DIG
23 24 25 26 27 28 29 30 31 32
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