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, VESA VGA BIOS, CD-ROM bootable, BIOS password control Set by setup manual Second Level Cache ItemSpecification Cache controller Built-in CPU Cache size 128KB/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 Via Twister-T Onboard memory size 128MB DIMM socket number 1 sockets (2 banks) Supports memory size per socket 512MB Supports maximum memory size 640MB Supports DIMM type Synchronous DRAM Supports DIMM Speed 100MHz or 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.
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 ItemSpecification Data modem data baud rate (bps) 56K Supports modem protocol V.90 MDC Modem connector type RJ11 Modem connector location Rear side 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 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 NameTOSHIBA 15G (MK1517)IBM 15G (IC25N015AT D)TOSHIBA 20G (MK2017)IBM 20G (IC25N020AT D)TOSHIBA 30G (MK3017)IBM 30G (IC25N030AT D) Capacity (MB) 15000 15000 20000 20000 30000 30000 Bytes per sector512 512 512 512 512 512 Data heads223344 Drive Format
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
mode-5
DC Power Requirements
Voltage
tolerance5V(DC) +/- 5% 5V(DC) +/- 5% 5V(DC) +/- 5% 5V(DC) +/- 5% 5V(DC) +/- 5% 5V(DC) +/- 5%
DVD-ROM Interface
ItemSpecification
Vendor & model name Toshiba SD-C2502
Performance Specification With CD Diskette With DVD Diskette
Transfer rate (KB/sec) Sustained:
Max 3.6Mbytes/secSustained:
Max 10.8Mbytes/sec
Data Buffer Capacity 128 KBytes
Interface IDE/ATAPI
Applicable disc format DVD: DVD-ROM (DVD-5, DVD-9, DVD-10, DVD-18),DVD-R (read, single
border)
CD: CD-DA, CD+(E)G, CD-MIDI, CD-TEXT, CD-ROM, CD-ROM XA, CD-I, CD-
I Bridge (Photo-CD, Video-CD) Multisession CD (Photo-CD, CD-EXTRA, CD-R,
CD-RW), CD-R (read), CD-RW (read)
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)
Hard Disk Drive Interface
ItemSpecification
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, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11 Video Interface ItemSpecification Chip vendor VIA Chip name TWISTER-T Chip voltage Core/3.3V Supports ZV (Zoomed Video) port No Video Resolutions Mode (for both LCD and CRT) Resolution8 bits (256 colors)16 bits (High color)24 bits (True color)32 bits (True color) 640x480 Yes Yes Yes Yes 720x480 Yes Yes Yes Yes 800x600 Yes Yes Yes Yes 848x480 Yes Yes Yes Yes 1024x768 Yes Yes Yes Yes 1152x864 Yes Yes Yes Yes 1280x1024 Yes Yes Yes Yes 1400x1050 Yes Yes Yes Yes 1600x1200 Yes Yes Yes Yes Parallel Port ItemSpecification Parallel port controller VT686B Number of parallel port 1 Location Rear side Connector type 25-pin D-type connector, in female type
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 Setup)3BCh, 278h, 378h Optional parallel port IRQ (in BIOS Setup) IRQ7, IRQ5 USB Port ItemSpecification USB Compliancy Level 1.1 OHCI USB 1.1 Number of USB port 2 Location Right panel Serial port function control Enable/Disable by BIOS Setup PCMCIA Port ItemSpecification PCMCIA controller OZ6933 Supports card type Type-III/II Number of slots One type-III or Two type-II Access location Left side Supports ZV (Zoomed Video) port No ZV support Supports 32 bit CardBus Yes (IRQ11) System Board Major Chips Item Controller System core logic VIA PN133/VT686B Super I/O controller Build in VT686B Audio controller Crystal 4299 AC 97 codes Video controller VIA Twister-T Hard disk drive controller VT686B Keyboard controller 87570 RTC VT686B Keyboard ItemSpecification Keyboard controller NS 87570 Keyboard vendor & model name Chicony MPO 130 Total number of keypads 87 keys with 101/102 key emulation Parallel Port ItemSpecification
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 Limited function, meet with safety requirement Windows 95 keys Yes Internal & external keyboard work simultaneously Yes Battery ItemSpecification Vendor & model name Panasonic/SUMSUNG Battery Type Li-ion Pack capacity 57Wh Cell voltage V/cell Number of battery cell 8 Package configuration 4 cells in series, 2 series in parallel Package voltage 14.8V LCD Inverter Specification FOR 14.1” Panel List No.LCD TypeVendorModel No.Frequency range (Min./Typ./Max)Lamp current (mArms) Min/Typ/Max 1 14.1” SVGA TFTHANSTAR HSD141PX11- A REV140/50/60KHz 20-6.5mA 2 14.1” SVGA TFTIBM ITXG77X 40/60/65HKz 2.5-6.4mA Inverter Characteristics No .ParameterSymbolMin.Ty p .Max.UnitConditions 1 Input voltage+5V 4.75 4.85 4.95 V 2 Input currentIin -- --- 1A A 3 Lamp CurrentIL 5.50 5.75 6.00 mArms Enable= H, PWM Duty = 100% 3.0 mArms Enable = H, PWM Duty = 30% 4 Lamp voltage625 Vrms At IL = 6.0 mArms Keyboard ItemSpecification
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 backlight brightness is minimum when PWM at 30% duty cycle. Ps1. Duty cycle=T(on)/T(period)
*4. The Inverter output should be 100% duty cycle when lamp current is less than 70% lamp current setting.
(No matter of PWM signal)
*5. Transformer voltage stress should not be over 85%.
*6. Transformer temperature rising should be less than 30 degree C.
5 Frequency F 45 55 65 kHz *2
6 Output
powerPout -- -- 4.5 W
7 Efficiency
η80 85 -- %
8 Starting
voltageVs 1500 --- --- Vrms At 0 degree C
9 Enable VIH 2.4 V Compal Output H: 3.3V
Compal Output L: 0V
VIL----0.8V
10 PWM
signals *3-- 150 -- Hz PWM signal frequency
VIH 2.4 V Compal OUtput H: 5.0V
VIL 0.8 V Compal Output L: 0V
30 -- 100 %
11 Current
Waveform
factor1.27 1.56 Multiple
OR *8
12 Unbalance
Rate-10% 0 +10% Multiple
Inverter Characteristics
No
.ParameterSymbolMin.Ty p .Max.UnitConditions
rmspII
−
rmspII2
rmsp pII I
−−
30Chapter 1 *7. Audio noise: less than 36db@10cm distance NOTE: *8. Wave form requirement: 1.27
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 than 30 degree C.
*6. Transformer voltage stress should not be over 85% under any condition (turn on overshoot transient and
line transient).
*7. Wave from requirement: 1.27
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 to 115Vac(60Hz) and 230Vac(50Hz) respectively. Efficiency It should provide an efficiency of 83% minimum, when measured at maximum load under 115V(60Hz). Output Ratings (CV mode) DC output voltage +18.8V~20.0V including the effects of line voltage variation, load current, ripple and noise Noise + Ripple 300mvp-pmax (20MHz bandwidth) for resistor load Output current 0 A (min.) 3.16 A (max.) Output Ratings (CC mode) DC output voltage +12V ~ +19V Constant output 3.16A Dynamic Output Characteristics Start-up time 2 sec. (@115Vac) Hold up time 5 ms min. (@115 Vac input, full load) Over Voltage Protection (OVP) 27 V Short circuit protection Output can be shorted without damage, and auto recovery Electrostatic discharge (ESD) 15kV (at air discharge) 8kV (at contact discharge) Dielectric Withstand Voltage Primary to secondary 2150 Vdc for 1 second Leakage current 100uA at 254Vac Regulatory Requirements 1. FCC class B requirements(USA) 2. VDE class B requirements(German) 3. VCCI classII requirements(Japan) ACPI modePower Management Mech. Off (G3) ❑All devices in the system are turned off completely. Soft Off (G2/S5) ❑OS initiated shutdown. All devices in the system are turned off completely. LCD ItemSpecification