LG DP372D Service Manual page 23

1-3. RS232 waveform during procedure(Downloading)
4
5
FIG 1-3
1-4. EEPROM SCK
6
FIG 1-4
LGE Internal Use Only
TXD
5
4
RXD
U203 U203
1
NC
2
NC
3
NC
4
GND
EEPROM 24C02 EEPROM 24C02
SOP8 SOP8
3-12 Copyright © 2008 LG Electronics. Inc. All right reserved.
3.3V
1
RXD
2
TxD
3
4
CON4_2.0MM_DIP CON4_2.0MM_DIP
CN101 CN101
R209 R209 R210 R210
1K 1K 1K 1K
8
VCC
7
WP
SCL
6
SCL
SDA
5
SDA
Only for training and service purposes
SD33
C210 C210
104 104
6