Philips PET940 Service Manual page 20

8.0 ELECTRICAL DIAGRAM
MAIN BOARD CIRCUIT DIAGRAM (CPU&CONTROL)
MC9S08QG4 MC9S08QG4
RST
1
BKGD
2
3
CPU3V3
4
SHUTDOWN
5
6
RMIN
7
RMIN
POWEREN
8
U29 U29
CPU3V3 R104 R104 10K 10K
R105 R105 10K 10K
R106 R106 10K 10K
+P5V
SHUTDOWN VD27 VD27
1
2SD601 2SD601
R107 R107
10K 10K
TFTON/OFF
POWEREN R145 R145 1K 1K
POWEREN#
C94 C94
0.1U 0.1U
PWM
16
BATAD
15
14
DVDIN
13
POWERKEY
12
KEYAD0
11
KEYAD1
10
IROUT
9
POWERKEY
KEYAD0
+P5V
KEYAD1
R108 R108
4.7K 4.7K
R109 R109 0 0
SHUTDOWN#
+P5V
R117 R117
U31 U31
4.7K 4.7K
1
1
2
2
3
3
VD28 VD28
1
DTC144 DTC144
FMC3 FMC3
RST
BATAD
BKGD
ADDC
CPU3V3
GND
U30 U30
FMC3 FMC3
R110 R110 47K 47K
R111 R111
C132 C132
51K 51K
10U/16V 10U/16V
SW3 SW3 RST
SWRST SWRST
3 2
3 2
4 1
4 1
5
5
4
TFTON
4
R118 R118
10K 10K
+P5V
R127 R127
JP2 JP2
RXD
1
JP4 JP4
1
R128 R128
JP1 JP1
TXD
1
JP3 JP3
1
GND
IROUT R116 R116
DVDIN R115 R115
VOL_PWM
R121 R121 10K 10K
SW1 SW1
3 2
TFTSW
3 2
4 5
4 5
1
1
TFTSW TFTSW
R122 R122 10K 10K
SW2 SW2
5 1
CLOSESW
5 1
4 2
4 2
3
3
CLOSESW CLOSESW
47K 47K
DV33
JP JP
2
RXD/SD_CMD
JP JP
2
AOUT_R
47K 47K
DV33
JP JP
2
TXD/SDD0
JP JP
2
AOUT_L
1K 1K
IR
0 0
MCUCOMU
DV33
DV33