Acer Travelmate 620 Service Guide
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Chapter 113 Lock Keys The keyboard has three lock keys which you can toggle on and off. Lock KeyDescription Caps Lock When Caps Lock is on, all alphabetic characters typed are in uppercase. Num Lock (Fn-F11)When Num Lock is on, the embedded keypad is in numeric mode. The keys function as a calculator (complete with the arithmetic operators +, -, *, and /). Use this mode when you need to do a lot of numeric data entry. a better solution would be to connect an external keypad. Scroll Lock (Fn-F12)When Scroll Lock is on, the screen moves one line up or down when you press the up or down arrow keys respectively. Scroll Lock does not work with some applications.
14Chapter 1 Embedded Numeric Keypad The embedded numeric keypad functions like a desktop numeric keypad. It is indicated by small characters located on the upper right corner of the keycaps. To simplify the keyboard legend, cursor-control key symbols are not printed on the keys. NOTE: If an external keyboard or keypad is connected to the computer, the Num Lock feature automatically shifts from the internal keyboard to the external keyboard or keypad. Desired AccessNum Lock OnNum Lock Off Number keys on embedded keypadType numbers in a normal manner. Cursor-control keys on embedded keypadHold j while using cursor-control keys.Hold Fn while using cursor- control keys. Main keyboard keys Hold Fn while typing letters on embedded keypad.Type the letters in a normal manner.
Chapter 115 Windows Keys The keyboard has two keys that perform Windows-specific functions. KeyIconDescription Windows logo keyStart button. Combinations with this key perform shortcut functions. Below are a few examples: + Tab (Activates next taskbar button) + E (Explores My Computer) + F (Finds Document) + M (Minimizes All) Shift + + M (Undoes Minimize All) + R (Displays the Run...dialog box) Application keyOpens a context menu (same as a right-click).
16Chapter 1 Hot Keys The computer employs hot keys or key combinations to access most of the computer’s controls like screen contrast and brightness, volume output and the BIOS Utility. To activate hot keys, press and hold the Fn key before pressing the other key in the hot key combination. Hot KeyIconFunctionDescription Fn-F1 Hot key help Displays a list of the hotkeys and their functions. Fn-F2 Setup Accesses the notebook’s configuration utility. Fn-F3 Power Management Scheme ToggleSwitches the power management scheme used by the computer (function available if supported by operating system). Fn-F4 Sleep Puts the computer in Sleep mode, which can be defined via the advanced section of the Power Management Properties in the Windows Control Panel. Fn-F5 Display toggle Switches display output between the display screen, external monitor (if connected) and both the display screen and external monitor. Fn-F6 Screen blank Turns the display screen backlight off to save power. Press any key to return. Fn-F7 Touchpad toggle Turns the internal touchpad on and off. When you connect an external PS/2 mouse, the computer automatically disables the touchpad. Fn-F8 Speaker toggle Turns the speakers on and off; mutes the sound. Fn- →Brightness up Increases the screen brightness. Fn- ←Brightness down Decreases the screen brightness. Fn-up Volume up Increases the speaker volume.
Chapter 117 Fn-down Volume down Decreases the speaker volume. Hot KeyIconFunctionDescription
18Chapter 1 Launch Keys Located at the top of the keyboard are five buttons. These buttons are called launch keys. They are designated as P1, P2, P3, Mail button and Web browser button. By default, buttons P1and P2 are users programmable. The mail button is used to launch the mail application. The LED of the mail button will flash when the user has received an incoming email. The P3, by default is used to launch a multimedia application that came bundled with your system. The web browser button, by default is used to launch your internet browser.
Chapter 119 Touchpad The built-in touchpad is a PS/2-compatible pointing device that senses movement on its surface. This means the cursor responds as you move your finger on the surface of the touchpad. The central location on the palmrest provides optimum comfort and support. NOTE: When using an external USB or serial mouse, you can press Fn + r to disable the touchpad. If you are using an external PS/2 mouse, the touchpad is automatically disabled. Touchpad Basics The following items teach you how to use the touchpad: !Move your finger across the touchpad to move the cursor. !Press the left (1) and right (3) buttons located on the edge of the touchpad to do selection and execution functions. These two buttons are similar to the left and right buttons on a mouse. Tapping on the touchpad produces similar results. !Use the center (2) button (top and bottom) to scroll up or down a page. This button mimics your cursor pressing on the right scroll bar of Windows applications. NOTE: Keep your fingers dry and clean when using the touchpad. Also keep the touchpad dry and clean. The touchpad is sensitive to finger movements. Hence, the lighter the touch, the better the response. Tapping harder will not increase the touchpad’s responsiveness. FunctionLeft ButtonRight ButtonCenter ButtonsTa p Execute Click twice quicklyTap twice (at the same speed as double- clicking a mouse button) Select Click once Tap once Drag Click and hold, then use finger to drag the cursor on the touchpadTap twice (at the same speed as double- clicking a mouse button) then hold finger to the touchpad on the second tap and drag the cursor Access context menuClick once Scroll Click and hold the up/down button
20Chapter 1 Hardware Specifications and Configurations Processor ItemSpecification CPU type Intel Pentium III 1/1.066/1.133 GHz processor with 512KB L2 on-die Cache CPU package Micro-FCPGA package CPU core voltage 1.40V/1.15V CPU I/O voltage 1.25V BIOS ItemSpecification BIOS vendor Acer BIOS Version V 3.3 BIOS ROM type Flash ROM BIOS ROM size 512KB BIOS package 32-pin TSOP Supported protocols ACPI 1.0b, APM 1.2, PC Card 95, SM BIOS 2.3, EPP/IEEE 1284, ECP/ IEEE 1284 1.7 & 1.9, IrDA, PCI 2.2, PnP 1.0a, DMI 2.0, PS/2 keyboard and mouse, USB, VESA VGA BIOS, DDC-2B, CD-ROM bootable, Windows keyboard Microsoft Simple Boot Flag BIOS password control Set by switch, see SW1(SW1) setting Second Level Cache ItemSpecification Cache controller Built-in CPU Cache size 512KB 1st level cache control Always enabled 2st level cache control Always enabled Cache scheme control Fixed in write-back System Memory ItemSpecification Memory controller Built-in Intel Amador-M Onboard memory size 0MB DIMM socket number 2 sockets (2 banks) Supports memory size per socket 512MB Supports maximum memory size 1024MB Supports DIMM type Synchronous DRAM Supports DIMM Speed 133 MHz Supports DIMM voltage 3.3V Supports DIMM package 144-pin soDIMM Memory module combinations You can install memory modules in any combinations as long as they match the above specifications.
Chapter 121 Above table lists some system memory configurations. You may combine DIMMs with various capacities to form other combinations. Memory Combinations Slot 1Slot 2Total Memory 0 MB 64 MB 64 MB 64 MB 0 MB 64 MB 0 MB 128 MB 128 MB 64 MB 64 MB 128 MB 128 MB 0 MB 128 MB 64 MB 128 MB 192 MB 128 MB 64 MB 192 MB 128 MB 128 MB 256 MB 0 256 256 256 0 256 256 MB 64 MB 320 MB 64 MB 256 MB 320 MB 256 MB 128 MB 384 MB 128 MB 256 MB 384 MB 256 MB 256 MB 512 MB 512 64 576 64 512 576 128 512 640 512 128 640 512 512 1024 LAN Interface ItemSpecification Chipset Intel 82562 ET Supports LAN protocol 10/100 Mbps LAN connector type RJ45 LAN connector location Rear side Modem Interface ItemSpecification Chipset Ambit MDC module with Lucent modem controller Fax modem data baud rate (bps) 14.4K Data modem data baud rate (bps) 56K Supports modem protocol V.90 MDC Modem connector type RJ11 Modem connector location Rear side
22Chapter 1 Floppy Disk Drive Interface ItemSpecification Vendor & model name Mitsumi D353G Floppy Disk Specifications Media recognition 2DD (720KB) 2HD (1.2MB, 3-mode) 2HD (1.44MB) Sectors/track 9 15 18 Tracks 80 80 80 Data transfer rate (Kbit/s)1 MB 1.6 MB 2 MB Rotational speed (RPM) 300 360 300 Read/write heads 2 Encoding method MFM/FM Power Requirement Input Voltage (V) +5V +/- 10% Hard Disk Drive Interface ItemSpecification Vendor & Model Name IBM Travelstar 10GN IC25N020ATDA04IBM Travelstar 20GN IC25N020ATDA04IBM Travelstar 30GN IC25N030ATDA04 Capacity (MB) 10000 20000 30000 Bytes per sector 512 512 512 Data heads 2 3 4 Recording zone 16 16 16 Drive Format Disks 1 2 2 Spindle speed (RPM) 4200 RPM 4200 RPM 4200 RPM Performance Specifications Buffer size 512KB 2048KB 2048KB Interface ATA-5 ATA-5 ATA-5 Max. media transfer rate (disk-buffer, Mbytes/s)216 216 235 Data transfer rate (host~buffer, Mbytes/s)100 MB/Sec. Ultra DMA mode-5100 MB/Sec. Ultra DMA mode-5100 MB/Sec. Ultra DMA mode-5 DC Power Requirements Voltage tolerance 5V(DC) +/- 5% 5V(DC) +/- 5% 5V(DC) +/- 5% DVD-ROM Interface ItemSpecification Vendor & model name MKE SR-8176 Performance Specification With CD Diskette With DVD Diskette Transfer rate (KB/sec.) Sustained: Max 3.6Mbytes/secSustained: Max 10.8Mbytes/sec. Data Buffer Capacity 512 KBytes Interface IDE/ATAPI