Acer Travelmate 520 Service Guide
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Chapter 115 Touchpad The built-in touchpad is a PS/2-compatible pointing device that senses movement on its surface. This means that 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-F7 to disable the touchpad. If you are using an external PS/2 mouse, the touchpad is automatically disabled. Touchpad basics The following items...
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16Chapter 1 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 ButtonTa p Execute Click twice quickly Tap 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...
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Chapter 117 Hardware Specifications and Configurations Main board Major Chips ItemController System core logic ALi M1621/M1535 Super I/O controller ALi M1535 Audio controller ALi M1535 + Cirrus Logic CS4299 Video controller ATI Rage Mobility-M1 IDE controller ALi M1535 Keyboard controller M38867 RTC BQ3285LF PCMCIA Controller O2 OZ6933 Processor ItemSpecification CPU type Intel Mobile Pentium III/Celeron 500/500+ MHz with 256KB/128KB on-die cache CPU package uPGA2 package CPU core voltage 1.6V /...
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18Chapter 1 Above table lists some system memory configurations. You may combine DIMMs with various capacities to form other combinations. DIMM socket number 2 sockets Supports memory size per socket 32/64/128/256 MB Supports maximum memory size 512 MB (256MB x 2) Supports DIMM type SDRAM Supports DIMM speed 100 MHz Supports DIMM voltage 3.3 V Supports DIMM package 144 pin so-DIMM Memory module combinations You can install memory modules in any combinations as long as they match the above...
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Chapter 119 Modem/LAN connector location Rear Side Floppy Disk Drive Interface ItemSpecification Vendor & model name Mitsumi D353F3X 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) 1MB 1.6MB 2MB 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 DARA-209000 IBM...
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20Chapter 1
CD-ROM Interface
ItemSpecification
Vendor & Model Name MKE CR-176-B/D 24X TEAC CD-224E-B26
Performance Specification
Transfer rate CAV Mode:
775~1800 blocks/sec
Mode 1:
1550~3600 kBytes/sec
Mode 2:
1768~4106kBytes/secBurst:
33.3 Mbytes/sec
Sustained:
1545~3600 kBytes/sec
Access time (typ.) Random: 100 ms
Full Stroke: 200 ms11 5 m s
Rotation speed 5000 rpm 5136 rpm
Data Buffer Capacity 128 KB 128 KB
Interface IDE IDE
Applicable disc format CD-Audio, CD-ROM (...
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Chapter 121 Note: (*1) Average of Data read over the whole area from 00 min. 02 sec. 00 block to 59 min. 58 sec. 74 block more than 2000 times including latency and layered error correction time. (*2) From 00 min. 02 sec. 00 block to 59 min. 58 sec. 74 block including latency and layered error correction time. (*3) Disc: MNSU-005 (*4) Average of Data read over the whole area from starting data recorded area (LBA:0) to maximum data recorded area (LBA:23197F), more than 2000 times including...
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22Chapter 1 Video Resolutions Mode ResolutionRefresh Rate CRT Only LCD/CRT Simultaneous 640x480x256 85 60 640x480x64K 85 60 640x480x16M 85 60 800x600x256 85 60 800X600X64K 85 60 1024x768x256 60, 75 60 Parallel Port ItemSpecification Parallel port controller ALi M1535 Number of parallel port 1 Location Rear side Connector type 25-pin D-type connector, in female type Parallel port function control Enable/Disable by BIOS Setup Supports ECP/EPP Yes (set by BIOS Setup) Optional ECP DMA channel (in BIOS...
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Chapter 123 IrDA Port ItemSpecification IrDA FIR port controller ALi M1535 Number of IrDA FIR port 1 Location Left side IrDA FIR port function control Enable/disable by BIOS Setup Optional IrDA FIR port (in BIOS Setup)2F8h, 3F8h, 3E8h, 2E8h Optional IrDA FIR port IRQ (in BIOS Setup)IRQ3, IRQ4 Optional IrDA FIR port DRQ (in BIOS Setup)DMA0, DMA1, DMA3 PCMCIA Port ItemSpecification PCMCIA controller O2 OZ6933 Supports card type Type III/II/I Number of slots One type III or two type II/I Access location...
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24Chapter 1 NOTE: DC-AC inverter is used to generate very high AC voltage, then support to LCD CCFT backlight user, and is also responsible for the control of LCD brightness. Avoid touching the DC-AC inverter area while the system unit is turned on. NOTE: There is an EEPROM in the inverter, which stores its supported LCD type and ID code. If you replace a new inverter or replace the LCD with a different brand, use Inverter ID utility to update the ID information. DC-DC Converter Output Output...