Philips 42PF9731D Service Manual page 81

Circuit Diagrams and PWB Layouts
SSB: RS232 Interface
1 2
RS232 INTERFACE
B1C
A
B
TS431AILT
7U21
C
1H07
FU40
1
FU41
2
FU42
D
3
4
FU43
5
FOR FACTORY
6
FU44
7
USE ONLY
8
FU45
9
10
FU46
11
FU47
12
FU48
FU49
13
FU50
14
147279-3
E
+3V3
3104 313 6145.2
1 2
BJ2.4U/BJ2.5U LA 7.
3 4
+5V2-STBY
IU90
IU91
7U20
BC847B
3 1
+3V3-UART
IU92 3U75
1V3
4
1K0
5 2
+3V3
JTAG-TRST
9U15
EJTAG-DETECT GLINK-TXD
EJTAG-TDI
EJTAG-TDO
TXD
EJTAG-TMS
RXD
EJTAG-TCK
9U07
RESET-SYSTEM
9U16
GLINK-RXD
3 4
81
5 6
9U13
+3V3-UART
FU30
RES
7U22
ST3232C 16
Φ
VCC
2U63 RS232
IU93
1
IU84
C1+ 2U65
6
100n V-
IU94
3
C1- 100n 2U64
2
2U66 IU95 V+
4
IU85
C2+ 100n
100n IU96
5
C2-
11 14
T1 T1
10 7
IN OUT
T2 T2
13 12
IU87 R1 R1
8 9
IN OUT
R2 R2
15
IU98
IU99
9U01
9U02
9U14
5 6
7 8
B1C
FOR
FACTORY
USE ONLY
1U02
IU00
FU51
3U98
1
IU64
100R FU52 2
3U99
3
5 4
100R
B3B-PH-SM4-TBT(LF)
FU31
IU97 3U79
1U03
RES
100R
1
FU32 2
3U81
3
5 4
100R
B3B-PH-SM4-TBT(LF)
G_15930_023.eps
7 8
1H07 D1 IU95 C5
1U02 D8 IU96 D5
1U03 D8 IU97 D7
2U60 B3 IU98 D6
2U61 B3 IU99 E4
2U63 C5
2U64 C6
2U65 C6
A 2U66 D5
3U72 A3
3U73 A4
3U74 A2
3U75 B3
3U76 B3
3U77 B3
3U79 D7
3U81 E7
3U90 D3
B 3U91 D2
3U92 E3
3U98 D7
3U99 D7
7U20 B3
7U21 B2
7U22 C5
9U01 E5
9U02 E5
9U07 E2
C 9U13 B5
9U14 E5
9U15 D4
9U16 E4
FU30 C6
FU31 D7
FU32 E7
FU40 D2
FU41 D2
FU42 D2
D FU43 D2
FU44 D2
FU45 D2
FU46 E2
FU47 E2
FU48 E2
FU49 E2
FU50 E2
FU51 D8
FU52 D8
E
IU00 D7
IU64 D7
IU84 C6
IU85 D6
IU87 D5
IU90 A3
IU91 B3
IU92 B3
120606
IU93 C5
IU94 C5