Acer Travelmate 550 Service Guide
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Chapter 123 Hardware Specifications and Configurations Processor ItemSpecification CPU type Pentium III 1.0G/Pentium III 1.13G CPU package FC-PGA package/FC-PGA2 package CPU core voltage 1.75V/1.475V CPU I/O voltage 1.25V/1.25V BIOS ItemSpecification BIOS vendor Phoenix BIOS Version 1.0 BIOS ROM type Flash ROM BIOS ROM size 512KB BIOS package TSOP Supported protocols ACPI 1.0b,PC Card 95, SM BIOS 2.3, EPP/IEEE 1284, ECP/IEEE 1284 1.7 & 1.9, PCI 2.2, PnP 1.0a, DMI 2.0, PS/2 keyboard and mouse, USB,...
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24Chapter 1 Above table lists some system memory configurations. You may combine DIMMs with various capacities to form other combinations. NOTE: The shipping specification for DIMM combination is 128MB in slot 1.. Memory Combinations On BoardSlot 1Total Memory 128 MB 0 MB 128 MB 128 MB 64 MB 192 MB 128 MB 128 MB 256 MB 128 MB 256 MB 384 MB 128 MB 512 MB 640 MB LAN Interface ItemSpecification Supports LAN protocol 10/100 Mbps LAN connector type RJ45 LAN connector location Rear side Modem Interface...
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Chapter 125 Disks112222 Spindle speed (RPM)4200 RPM 4200 RPM 4200RPM 4200RPM 4200RPM 4200RPM Performance Specifications Buffer size 2048KB 512KB 2048KB 2048KB 2048KB 2048KB Interface ATA-5 ATA-5 ATA-5 ATA-5 ATA-5 ATA-5 Max. media transfer rate (disk-buffer, Mbytes/s)216 235 287 216 235 287 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-5100 MB/Sec. Ultra DMA mode-5100 MB/Sec. Ultra DMA mode-5100 MB/Sec. Ultra DMA...
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26Chapter 1 Audio Interface ItemSpecification Audio Controller CS 4299 Audio onboard or optional Built-in Mono or Stereo Stereo Resolution 20 bit stereo Digital to analog converter 18 bit stereo Analog to Ditial converter Compatibility Microsoft PC98/PC99, AC97 2.1 Mixed sound source Line-in, CD, Video, AUX Voice channel 8/16-bit, mono/stereo Sampling rate 44.1 KHz Internal microphone No Internal speaker / Quantity Yes Supports PnP DMA channel DMA channel 0 DMA channel 1 Supports PnP IRQ IRQ3,...
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Chapter 127 Parallel port function control Enable/Disable/Auto (BIOS or operating system chooses configuration) by BIOS Setup Note: Depending on your operating system, disabling an unused device may help free system resources for other devices. Supports ECP/EPP/Bi-directional (PS/2 compatible) Yes (set by BIOS setup) Note: When Mode is selected as EPP mode, “3BCh” will not be available. Optional ECP DMA channel (in BIOS Setup) DMA channel 1 and 3 Optional parallel port I/O address (in BIOS...
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28Chapter 1 General Description This inverter is designed for the CCFL of α 550 14.1” LCD which are using on the α 550 notebook. We use two signals to control the LCD brightness. One is the Enable, which turn on and turn off the birightness of LCD. The other is the PWM, which tune the brightness by modulating the duty cycle. This inverter uses open loop control circuit and meets with safety requirements. Features 1. +5V Fixed input voltage 2. Birghtness adjustment by PWM duty cycle 3. Current...
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Chapter 129
Environment: Temperature: Operating temperature: 0°C~55°C
Storage temperature: -20°C~80°C
Humidity: 0~90% without condensation
MTBF: 5000 hours
NO.1: 14.1” XGA TFT, HANSTAR, HSD141PX11-A
NOTE: Please pay attention to the fellowing:
*1. Make sure open lamp output voltage should be within starting voltage specification.
*2. Inverter should pass human body safety test.
*3. PWM signal is a 150HZ square wave. The backlight brightness is maxmum when PWM at 100% duty cycle
and...
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30Chapter 1 *7. Audio noise: less than 36db@10cm distance NOTE: *8. Wave form requirement: 1.27
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Chapter 131
Environment: Temperature: Operating temperature: 0°C~55°C
Storage temperature: -20°C~80°C
Humidity: 0~90% without condensation
MTBF: 5000 hours
NO.1: 14.1” XGA TFT, HANSTAR, HSD141PX11-A
NOTE: Please pay attention to the fellowing:
*1. Make sure open lamp output voltage should be within starting voltage specification.
*2. Inverter should pass human body safety test.
*3. Inverter should no smoking by any component open/short test.
*5. Transformer temperature rising should be less...
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32Chapter 1 Supply voltage for LCD display (V)3.3 3.3 3.3 3.3 Supply voltage for LCD backlight (Vrms)690 690 690 690 AC Adapter ItemSpecification Vendor & model name ADAPTER PA-1600-02 CA 60W 3 PINS Input Requirements Maximum input current (A, @90Vac, full load)1.8 A @ 90Vac 0.9 A @ 180Vac Nominal frequency (Hz) 47 - 63 Frequency variation range (Hz) 47 - 63 Nominal voltages (Vrms) 90 - 264 Inrush current The maximum inrush current will be less than 50A and 100A when the adapter is connected...