Acer Travelmate 4050 Service Guide
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24Chapter 1
Loading mechanism Load: Manual
Release: (a) Electrical Release (Release Button)
(b) Release by ATAPI command
(c) Emergency Release
Power Requirement
Input Voltage +5 V +/- 5 % (Operating)
+/- 8 % (Start up)
Input Voltage +5 V +/- 0.25V
DVD-ROM Interface
ItemSpecification
Vendor & model name QSI SDW-082S
Performance Specification With CD Diskette With DVD Diskette
Transfer rate (KB/sec) (Mode1)
4X-5.7X PCAV 600-855KByte/s
10.3X-24X CAV 1552-3600KByte/s...
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Chapter 125 DVD Dual Interface ItemSpecification Vendor & model name QSI SDW-082S Lite-On SOSW-852S Performance Specification With CD Diskette With DVD Diskette Transfer rate (KB/sec) (Mode1) 4X-5.7X PCAV 600-855KByte/s 10.3X-24X CAV 1552-3600KByte/s (Mode2) 4X-5.7X PACV 684.4-975.3KBytes/s 10.3X-24X CAV 1769-4104KByte/s3.3X-8X CAV 4463-10820KByte/s Data Buffer Capacity 192 KBytes Interface IDE/ATAPI Applicable disc formatRead : DVD: DVD-ROM (DVD-5, DVD-9, DVD-10, DVD-18),DVD-Video, DVD-...
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26Chapter 1 Video Interface ItemSpecification Video vendor UMA (855GME) Support bbp 15/16/24/32 bbp True Color on LCD& dual view Chip voltage Core/1.35V Supports ZV (Zoomed Video) port No Parallel Port ItemSpecification Parallel port controller LPC47N217 Number of parallel port One Location Rear side Connector type 25-pin D-type connector, in female type Parallel port function control Enable/Disable/Auto (BIOS or operating system chooses configuration) by BIOS setup Note: Depending on your operating...
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Chapter 127 System Board Major Chips Item Controller System core logic 855GHE/ICH4-M Super I/O controller LPC47N217 Audio controller ALC250 Video controller UMA Hard disk drive controller ICH4-M Keyboard controller KB910 Keyboard ItemSpecification Keyboard controller KB910 Keyboard vendor & model name Standard keyboard w/o launch button embeded Total number of keypads 85/US, 86/UK keys with 101/102 key emulation Windows logo key Yes Internal & external keyboard work simultaneously Yes Battery...
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28Chapter 1 15.0” Vendor & model name AU B150XG02 V2 HW:2Samsung LTN150XB-L03-C00 Mechanical Specifications LCD display area (diagonal, inch)15” 15” Display technology TFT TFT Resolution 1024 x 768 1024 x 768 Supports colors 262K 262K Dot Pitch 0.297mm 0.297mm Optical Specification Contrast ratio 300:1 450 : 1 Response time (msec) 25ms 16ms Limuinance, white, 5P (cd/m 2) 200 270 Viewing Angle L/R:40 o/40o, U/D:10o/33oH/V: 120o / 120o AC Adapter ItemSpecification Vendor & model name...
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Chapter 129 Input Current (100Vac, 240Vac / 3.5A loag)larger than or equal to 1.5A Output Characteristics Output Rated Voltage 20V Output Current 0A to 3.5A Output Voltage Setting 19.5V to 21V Output Voltage Ripple and Noise(90Vac/70W load; 264Vac/ 70W load)larger than or equal to 300mVp-p Dynamic Load Change 19.5~21V Protection Characteristics Over Voltage Protection 25V Power Management ACPI ModePower Management Mech. Off (G3) All devices in the system are turned off completely. Soft Off (G2/S5) OS...
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30Chapter 1 I/O Ports One type II CardBus slots, one RJ-11 modem jack, one RJ-45 network jack, one DC-in jack for AC adapter, one ECP/EPP-compliant parallel port, one external monitor port, one headphone/speaker/line-out jack (3.5mm mini jack), one microphone/line-in jack (3.5mm mini jack), three Universal Serial Bus (USB) ports, one IEEE 1394 port, one S-video port Material Cover material: ABS Indicators Power, Battery charge, HDD, ODD, Wireless/Bluetooth communication, Caps lock, Pad lock, Num...
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Chapter 231 BIOS Setup Utility The BIOS Setup Utility is a hardware configuration program built into your computer’s BIOS (Basic Input/ Output System). Your computer is already properly configured and optimized, and you do not need to run this utility. However, if you encounter configuration problems, you may need to run Setup. Please also refer to Chapter 4 Troubleshooting when problem arises. To activate the BIOS Utility, press m during POST (when “Press to enter Setup” message is prompted on the...
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32Chapter 2 Main This menu provides you the information of the system. ParameterDescription Device Product Name A product name string will be stored in the secured data area. The product name is an alphnumeric string of 16 bytes in length checksum. Manufacture Name A manufacture name string will be stored in the secured data area. It is defined as “Acer” stored 16 bytes in total length with checksum. System BIOS Version This field reports the BIOS version of system. VGA BIOS Version This field reports...
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Chapter 233 Memory Base Memory This field reports the memory size of system base memory. The size is fixed to 640KB. Extended Memory This field reports the memory size of the extended memory in the system. Extended Memory size = Total memory size - 127 MB VGA Memory VGA Memory size = 16MB ParameterDescription Time and System Date The hours are displayed with 24 hour format. The values set in these two fields take effect immediately Quiet Boot Enabled>Customer Logo is displayed, and Summary Screen is...