Service manual
Schematic Diagrams
B-1
B.Schematic Diagrams
Appendix B: Schematic Diagrams
This appendix has circuit diagrams of the P270WM/P270WM3 notebook’s PCB’s. The following table indicates where
to find the appropriate schematic diagram.
Diagram - Page Diagram - Page Diagram - Page
System Block Diagram - Page B - 2 PCH PCI - Page B - 23 HDD, ODD - Page B - 44
Sandy Bridge - DDR 0 & 1 - Page B - 3 PCH USB/PCIE/DMI - Page B - 24 AC_IN, Charger - Page B - 45
Sandy Bridge - DDR 2 & 3 - Page B - 4 PCH SATA - Page B - 25 eSATA+USB, USB Charge - Page B - 46
Sandy Bridge - DDR ControI - Page B - 5 PCH GPIO/HDA - Page B - 26 Power V_SM, VTT MEM - Page B - 47
Sandy Bridge - Control - Page B - 6 PCH NVRAM - Page B - 27 Power CPU_PLL, 1.05V - Page B - 48
Sandy Bridge - PEG & DMI - Page B - 7 PCH SAS - Page B - 28 Power 12V, 1.1VM - Page B - 49
Sandy Bridge - PEG - Page B - 8 PCH Power - Page B - 29 Power Switch - Page B - 50
Sandy Bridge - N-Power - Page B - 9 PCH GND - Page B - 30 Power VDD3/ VDD5 - Page B - 51
Sandy Bridge - O-Power - Page B - 10 Clock Generator, Buffer - Page B - 31 Power CPU_VTT - Page B - 52
Sandy Bridge - VSS - Page B - 11 TPM 1.2 - Page B - 32 CPU1 L6751 Controller - Page B - 53
Sandy Bridge - QPI - Page B - 12 USB 3.0 - Page B - 33 CPU2 Power Stage - Page B - 54
DDR3 CHA SO-DIMM 0 - Page B - 13 EC ITE8519 - Page B - 34 DAUGHTER CON - Page B - 55
DDR3 CHB SO-DIMM 1 - Page B - 14 Fan Control - Page B - 35 Backlight Keyboard - Page B - 56
DDR3 CHC SO-DIMM 2 - Page B - 15 Audio Codec ALC892, DMIC - Page B - 36 AUDIO BOARD - Page B - 57
DDR3 CHD SO-DIMM 3 - Page B - 16 Audio AMP - Page B - 37 CLICK BOARD - Page B - 58
MXM 3.0 PCI-E MASTER - Page B - 17 WLAN, TV Card - Page B - 38 K/B CONVERTER BOARD - Page B - 59
MXM 3.0 PCI-E SLAVE - Page B - 18 LAN PHY Intel 82579V - Page B - 39 SWITCH BOARD - Page B - 60
Display Port, New Card - Page B - 19 Card Reader JMB389 - Page B - 40 USB BOARD - Page B - 61
HDMI - Page B - 20 IEEE 1394 - Page B - 41 FINGER SENSOR BOARD - Page B - 62
LCD, eDP, 3D Emitter - Page B - 21 POWER SYSTEM - Page B - 42 TOUCH SENSOR BOARD - Page B - 63
DVI - Page B - 22 BT, CCD - Page B - 43 POWER LED BOARD - Page B - 64
Table B - 1
Schematic
Diagrams
Version Note
The schematic dia-
grams in this chapter
are based upon version
6-7P-P2709-003A. If
your mainboard (or oth-
er boards) are a later
version, please check
with the Service Center
for updated diagrams
(if required).