Acer Travelmate 550 Service Guide

							Chapter 13
System Block Diagram
PCI BUS
ISA BUSClock Generator
SO-DIMM 0
(Bank 2,3)
USB Port 0,1
VT686B CardBus
OZ6933
HCLK_CPU
CLK_SDRAM0PCLK_PCM PCLK_1394
PCLK_SB
48MHZ14MOSC
14MCRT/14.3M_TV
14MOSC
SA(0..15)
SD(0..15)DCLKO
Twister PN-133T
    (VT8606)
Y1
14.318MHZ
DCLKWR
AD(0..31)
HD#(0..63) HA#(3..31)
Mini PCI
Socket
TFT  Panel
Interface TV_OUT
Connector
INTEL FC-PGA370
Sy stem Block  Diagram
Power Circuit
DC/DCSlot 0&1
DC/DC Interface
RTC BatteryPull Up/Down
Resistor
IDE Damping
Resistor
IDE Connector
(FDD/HDD/CR-ROM)
BIOSKBD
Touch Pad
KeyBoard
87570
I/O Buffer
AC97
Interface
On Board
64/128MB
(Bank 0)
MD(0..63)
MA(0..13)
Memory Damping
Resistor
CLK_SDRAM2,3
PIO Power On/Off
Reset Circuit
ICS 9248-195
IEEE 1394
Slot 0
PCIGNT#/PCIREQ#
PIRQA#
HCLK_NB
CRT
Connector
PIRQA#/PIRQB#
GNT#3/REQ#3
AD15PIRQC#
GNT#2/REQ#2
AD24 PIRQB#/PIRQD#
GNT#0/REQ#0
GNT#1/REQ#1
AD27/AD28
DIRECT
CD-PLAY
FUNCTION
IDE CHANNEL  1
FIR
PCLK_MINI
PCLK_NB APICCLK 
						

							4Chapter 1
Board Layout
To p  V i e w
1 Power On/Off LID switch 5 Software debug only, normally shipping on 
this connector
2 LCD connector 6 FDD connector
3 LID switch 7 Internal keyboard connector
4 System board connector 8 Switch board connector 
						

							Chapter 15
Bottom View
1 Mini PCI connector 9 So-DIMM connector for SDRAM only
2 1394 Connector 10 CPU fan connector
3 CPU socket for FC-PGA370 11 PCMCIA socket connector
4 CD-ROM connector 12 Battery connector
5 Print port connector 13 AC adapter input connector
6 CRT connector 14 PS/2 keyboard and PS/2 mouse connector
7 TV out connector for S-video only 15 USB connector
8 HDD connector 16 USB connector 
						

							6Chapter 1
Outlook View
A general introduction of ports allow you to connect peripheral devices, as you would with a desktop PC.  
Front View 
						

							Chapter 17
#IconItemDescription
1 1 Display screen Also called LCD (liquid-crystal display), 
displays computer output.
2 Power button Turns on the computer power.
3 Status LCD LCD that display icons to show the status 
of the computer and its functions and 
components.
4 Keyboard Inputs data into your computer.
5 Touchpad Touch-sensitive pointing device which 
functions like a computer mouse.
6 Click buttons (left and 
right)The left and right buttons function like the 
left and right mouse buttons.
7 Launch keys Buttons for launching frequently-used 
programs. Please seee User’s Guide 
“Launch keys” on page 22 for more details.
8 Status indicators Shows the power and email status.
9 Speaker Outputs sound.
10 Palmrest Comfortable support area for your hands 
when you use the computer.
11 Floppy drive Accepts a 3.65-inch diskette.
12 Floppy drive eject 
buttonPress to eject the diskette from the floppy 
drive. 
						

							8Chapter 1
Left Panel
#IconItemDescription
1 Optical drive Depending on your model:
--CD-ROM drive reads CDs
--DVD-ROM drive reads CDs and DVDs
--DVD/CD-RW combo drive reads CDs and 
DVDs, and writes to CD-Rs and CD-RWs.
2 Optical drive eject 
buttonEjects the disc from the optical drive.
3 Optical drive 
emergency eject holeEject the disc from the optical drive when 
the computer is turned off. See User’s 
Guide “How do I eject the optical drive tray 
with the computer turned off?” on page 78 
fo more details. 
						

							Chapter 19
Right Panel
 
#IconItemDescription
1 Speaker/headphone-
out jackConnects to audio line-out devices (e.g., 
speakers, headphones).
2 Microphone-in jack Connects and external microphone.
3 PC Card eject buttons Eject the selected PC Card from its slot.
4 PC Card slots Accepts one Type III or two TypeII/I PC 
Card(s).
5 DC-in jack Connects to the AC adapter.
6 PS/2 port Connects toa PS/2-compatible device 
(e.g., PS/2 keyboard/mouse/keypad).
7 USB port (two) Connects to the USB devices (e.g., USB 
mouse). 
						

							10Chapter 1
Rear Panel
#IconItemDescription
1 Security keylock Connects to a Kensington-compatible 
computer security lock.
2 IEEE 1394 port Connects to a IEEE 1394 compatible 
device (e.g., digital camcorder).
3 Network jack Connects to an Ethernet 10/100-based 
network.
4 Modem jack Connects a phone line (only for models 
with an internal fax/data modem).
5 Parallel port Connects to a parallel device (e.g., parallel 
printer).
6 External display port Connects t a display monitor.
7 Video-out port Connects to a display device with S-video 
input. 
						

							Chapter 111
Bottom Panel
#IconItemDescription
1 Hard disk bay Houses the computer’s hard disk.
2 Battery release button Press and hold to release the battery latch.
3 Battery release latch Unlatches the battery to remove the battery 
pack.
4 Battery bay Houses the computer’s battery pack.
5 Memory compartment Houses the computer’s main memory. 
						

							12Chapter 1
Indicators
The computer has an easy-to-read status LCD (1) located above the keyboard. Two status indicators, power 
(2), and email (3) are located near the front of the computer.
The status LCD displays icons that show the status of the ocmpouter and its components..
IconFunctionDescription
Caps lock Caps Lock is activated.
Num lock Numeric Lock (for embedded keypad) is 
activated.
Pad lock Pad Lock (for embedded keypad) is 
activated.
Scroll lock Scroll Lock is activated.
Optical drive/Hard disk 
activityCD or DVD drive or hard disk is being 
accessed.
Floppy drive activity Floppy drive is being accessed.
PC Card activity PC Card is being accessed.