Toshiba Satellite L640 Maintenance Manual page 245

Board Layout
(27) U4
(28) U5
(29) U8
(30) U10
(31) U11
(32) U13
(33) U14
(34) U15
(35) U16
(36) U17
(37) U21
(38) MR1
(39) LED1
(40) LED2
(41) LED3
(42) LED4
(43) LED5
(44) LED6
Table B-1-3 System board ICs, Leds and connectors
Satellite L600/L640/L645, Satellite Pro L600/Pro L640/Pro L645 Maintenance Manual (960-Q08)
LAN IC
LAN Transformer
HDMI Level Shift IC (just on UMA M/B)
Clock generator
Embedded Controller IC
EC Code EEPROM
Audio Codec
ME_BIOS Code EEPROM
CPU Socket
PCH Chip
Card-Reader Controller IC
MR Sensor IC for Lid Switch
AC-IN LED
POWER LED
BATT LED
HDD LED
Wi-Fi/3G LED
Card Reader LED