Appendix B:Schematic Diagrams
This appendix has circuit diagrams of the M540S/M545S/M550S/M555S notebook's PCB's. The following table indi-
cates where to find the appropriate schematic diagram.
Diagram - Page
System Block Diagram - Page B - 2
PROCESSOR 1/2 - Page B - 3
PROCESSOR 2/2 - Page B - 4
VN800 1/4 - Page B - 5
VN800 2/4 - Page B - 6
VN800 3/4 - Page B - 7
VN800 4/4 - Page B - 8
DDR2-1 - Page B - 9
DDR2-2 - Page B - 10
CLOCK GENERATOR, CCD - Page B - 11
PANEL, INVERTER, FAN - Page B - 12
VIA LVDS VT-1637 - Page B - 13
VT8237 1/3 - Page B - 14
Diagram - Page
VT8237 2/3 - Page B - 15
VT8237 3/3 - Page B - 16
MINI PCI, MINI Card, USB2.0*2 - Page B - 17
PATA HDD, CD-ROM, H8 BEEP - Page B - 18
LAN PHY - Page B - 19
LPC ROM, TOUCH PAD, LED - Page B - 20
H8-2111 - Page B - 21
MDC, USB BT, PWRGD, DDB CON - Page B - 22 HOT KEY BD (HOT KEY, LED) - Page B - 35
AC97 CODEC VT1613 - Page B - 23
AUDIO AMP, USB2.0*2 - Page B - 24
PCMCIA ENE CB714B - Page B - 25
PCM SOCKET, 3-IN-1 SOCKET - Page B - 26
3VS, 5VS, 2.5VS, 1.8VS - Page B - 27
Diagram - Page
+1.8V, +0.9V - Page B - 28
VCORE - Page B - 29
VCCP, +1.5VS - Page B - 30
+VDD3, +VDD5 - Page B - 31
D/D BD (CRT, INVERTER, CCD) - Page B - 32
D/D BD (CHARGER, DC IN) - Page B - 33
AUDIO BD (PHONE JACK, USB, RJ-11) - Page B - 34
LED BOARD - Page B - 36
CLICK BOARD - Page B - 37
RJ-45 BOARD - Page B - 38
USB DONGLE BOARD - Page B - 39
DEBUG PORT - Page B - 40
Schematic Diagrams
Table B - 1
Schematic
Diagrams
Version Note
The
schematic
dia-
grams in this chapter
are based upon ver-
sion
6-71-M55S0-
003A. If your main-
board (or other boards)
are a later version,
please check with the
Service Center for up-
dated diagrams (if re-
quired).
B - 1