Philips AS111 series Service Manual page 9

CIRCUIT DIAGRAM - KEY BOARD
Sector NC
R128
33R
UHD-
R127
33R
UHD+
*
*
C122
5P
R129
R130
15K
15K
D3V3
URX
R131
UTX
10K
C133
R137
1U
DEBUG
C127
1U
R138
USB-RST
C124
104
C128
6-2
C144
1U
C148
C150
C149
10U
10U
104
5 6
C134
VQ FILT
MCLK
4 7
MCLK AOUTL 104
LRCK U14
3 8
LRCK GND
BCLK
2 ET4344 9
SCLK VA
U-SDAT
1 SDIN 10
AOUTR
C145
R135
100R
R134
100R
R133
100R
10K
R124
10K
R123
C123
5P
R143
100R
R142 100R
UHD- DBG1
37 24
UHD+ DBG0
38 23
VDD3 CP_CE R141 100R
39 22
VSS3 CP_REST
40 21
UFILT U13 VSS2
41 20
AFILT VDD2
42 19
NC8 LC87F1HC8A MCLK
C132
43 18
URX NC4
44 17
UTX NC3 104
45 16
DBG_OPT NC2
10K 46 15
NC9 CP_CLK
47 14
USB_IN CP_DI
48 13
CP_DO
NC
R122 10K
R136 1K
R139
10K
C131
X3 12M
104
R132 22K
C129 C130
10P 10P
104
R140
100R
USB_L
R29
10K
C146
R42
100P
47K
C135
100U/6V3
L22 FB1K
D3V3
USB_R
R46
1U C147
R49
10K
100P
47K
CON7
D3V3 6
5
G2
4
G1
3
G0
2
U-RES
1
C121 100P
KEY1
6-2
SW5
VOL-
SW3
BL-SET NA
COW3
SW4
POWER ON/OFF
SW2
VOL+
SW1
CLOCK brightness
R102
51K
R103
10K
2
1
CON2A
R112 0R
R113
0R
LED1
R114
0R
GY205_LED
R115
0R
16 COM4
15 COM3
COM2
14
COM1
13
12
U12
11
PT6964S
10
R111 10R 9
DOT
8
R110
10R
7 G
R109
10R
6 F
R108
10R
5 E
R107 10R
4 D
R106
10R
3 C
R105
10R
2 B
R104
10R
1 A