Acer Travelmate 270 Service Guide
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26Chapter 1 NOTE: Above table lists some system memory configurations. You may combine DIMMs with various capacities to form other combinations. . Memory Combinations Slot 1Slot 2To t a l M e m o r y 128MB/256 MB 0 MB 128MB/256 MB 128MB/256 MB 128 MB 256MB/384 MB 128MB256 MB 256 MB 384MB/512 MB 128MB/256 MB 512 MB 640MB/768 MB 512MB 512MB 1024MB LAN Interface ItemSpecification Supports LAN protocol 10/100 Mbps LAN connector type RJ45 LAN connector location Right side Modem Interface ItemSpecification Data modem data baud rate (bps) 56K Supports modem protocol V.90 MDC Modem connector type RJ11 Modem connector location Right side Floppy Disk Drive Interface ItemSpecification Vendor & model name Panasonic JU226A273FC/Mitsumi D353G-2938 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 NameIBM 20G IBM 30G IBM 40G Toshiba 20G (MK2018 )To s h i b a 30G (MK3018 )To s h i b a 40G (MK4018 )Hitachi 20G DK23DA -20FHitachi 30G DK23DA -30FHitachi 40G DK23DA -40F Capacity (MB) 20000 30000 40000 20000 30000 40000 20000 30000 40000 Bytes per sector512 512 512 512 512 512 512 512 512 Data heads234234234 Drive Format Disks 122122122
Chapter 127
Spindle speed
(RPM)4200
RPM4200
RPM4200
RPM4200
RPM4200
RPM4200
RPM4200
RPM4200
RPM4200
RPM
Performance Specifications
Buffer size 2048KB 2048KB 2048KB 2048KB
Interface ATA-5 ATA-5 ATA-5 ATA-5
Max. media
transfer rate
(disk-buffer,
Mbytes/s)216 287 287 235
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-5100 MB/
Sec.
Ultra
DMA
mode-5
DC Power Requirements
Voltage
tolerance5V(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
28Chapter 1 Audio Interface ItemSpecification Audio Controller Integrated Software Audio in SiS961 South Bridge with Realtek ALC202 AC97 Codec(No SPDIF) 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/2 Supports PnP DMA channel DMA channel 00 Supports PnP IRQ IRQ3, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11 Video Interface ItemSpecification Chip vendor SiS Chip name Integrated VGA chip in SiS650 North Birdge Chip voltage Core/3.3V Supports ZV (Zoomed Video) port No Video Resolutions Mode (for both LCD and CRT) Resolution16 bits (High color)32 bits (True color) 800x600 Yes Yes 1024x768 Yes Yes 1152x864 Yes Yes 1280x1024 Yes Yes 1400x1050 (SXGA+panel only)Ye s Ye s Parallel Port ItemSpecification Parallel port controller SMSC LPC47N227 Number of parallel port 1 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 system, disabling an unused device may help free system resources for other devices.
Chapter 129 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 Optional parallel port I/O address (in BIOS Setup)378h, 278h, 3BCH 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 3 Location Rear side Serial port function control Enable/Disable by BIOS Setup PCMCIA Port ItemSpecification PCMCIA controller ENE CB1420 CardBus controller Supports card type Type-III/II Number of slots One type-III or Two type-II Access location Right panel Supports ZV (Zoomed Video) port No ZV support Supports 32 bit CardBus Yes (IRQ11) System Board Major Chips Item Controller System core logic SiS650+SiS961(SB) Super I/O controller SMC LPC47N227 Audio controller Integrated Software Audio in SiS961 South Bridge with Realtek ALC202 AC97 Codec(No SPDIF) Video controller Integrated VGA chip in SiS650 North Birdge Hard disk drive controller ICH2 Keyboard controller NS87591 RTC ICH2 Keyboard ItemSpecification Keyboard controller NS87591 Keyboard vendor & model name Chicony Total number of keypads 87/88/89 keys with 101/102 key emulation Windows logo key Yes Internal & external keyboard work simultaneously Yes Parallel Port ItemSpecification
30Chapter 1 There are two control signals that come form system to control lamp brightness. One signal is named DAC_BRIG, which limits current to meet LCD lamp current specification. Another one is named PWM, which adjusts lamp brightness. This inverter brightness is adjusted by PWM burst mode. The PWM burst mode is that turning on and off the lamp at rate of 150Hz. The effective brightness is a function of the duty cycle. Features 1. Wide range 9V to 21V input voltage. 2. Birghtness adjustment by PWM duty mode. Battery ItemSpecification Vendor & model name Panasonic Battery Type Li-ion Pack capacity 57Wh Cell voltage 3.7V/cell Number of battery cell 8 Package configuration 4 cells in series, 2 series in parallel Package voltage 14.8V LCD Inverter Specification This inverter is designed to light up the CCFL of LCD for TravelMate 270 series notebook. It should be supported the following LCD panels. No.SupplierModelTy p e 1 LG LP150x04 TFT, 15.0” XGA 2 Hitachi TX38D85 TFT, 15.0” XGA 3 CPT CLAA14/XF01 TFT, 14.1” XGA 4 CPT CLAA150PA01 TFT, 15.0” SXGA+ 5 LG LP150E0/-A2M2 TFT, 15.0” SXGA+ 6 IBM ITSX95C TFT 15.0” XGA
Chapter 131 3. Automatic brightness compensation for input voltage variation. NOTE: Please pay attention to the fellowing: *1. Limited lamp maximum current by DAC_BRIC signal: Electrical Characteristics No .ParameterSymbolMin.Ty p .Max.UnitComment 1 Input voltageNV_PWR 9 14.8 21 V 2 Input currentIin -- 0.33 -- A 3 Lamp currentIL 2.7 -- 6.3 mA *Note 1 4 FrequencyF45 5565 KHz* Note 2 5 Output powerPout -- -- 4.5 W 6 Efficiencyη80% -- -- -- 7Starting voltageVs 1600 -- --- V At 0’C 8Starting timeTvs 1 -- 1.5 Sec 9 Dispoff# 2.8 3.3 3.6 V Backlight on/off signal 00.50.8VLow level 10 Limited lamp maximum currentDAC- BRIG0 3.3 V *Note 1 11 P W M signal *Note 4INV_PW M142 150 158 Hz PWM signal frequency 3.0 3.3 3.6 V PWM signal amplitude 30 -- 100 % 12 Lamp current over-shootI zero-PK -- -- 10 % Line transient (10.8V to 21V/100us) and turn on transient 13 Current Wa ve fo rm factor1.27 1.56 Multiple or *10 14 Unbalance Rate-10% 0 +10% Mulitple 15 Turn off voltageVoff -- -- 100Vp- PVPWM=40% 16 Voltage Rise timeTrise -- -- 300us us PWM=40% 17 Voltage fall timeTfall -- -- 300us us PWM=40% DutyTon Period ------------------- = rms p II 2 rms p II − rms pp II I−−
32Chapter 1
When DAC_BRIG voltage is 0V and INV_PWM enables (100%), lamp has max. current.
When DAC_BRIG voltage is 3.3V and INV_PWM enables (100%), lamp has min. current.
DAC_BRIG signal comes from system chipset with internal resistance of 3K
*2. Inverter operating frequency should be within specification (45~65kHz) at max. and min.
brightness load.
*3. INV_PWM enable implies INV_PWM signal is High level (On duty cycle is 100%). It is a square
wave of 150Hz to adjust backlight brightness that is a function of PWM duty cycle. Backlight
brightness is maximum value under INV_PWM at 100% and brightness is minimum under
INV_PWM at 30%.
*4.The system interface signals belong to 3.3V.
*5. Please make sure open lamp output voltage should be within starting voltage specification.
*6. Inverter should pass human body safety test.
*7. Inverter should be no smoking by any component open/short test.
*8. Transformer voltage stress should not be over 85% under any condition.
(turn on overshoot transient and line transient.)
*9. Audio noise should be less than 36dB at 10cm distance.
.
Thermal
All components on inverter board should follow below rules:
1. Component using conditions (component stress) must be within component specification including voltage
rating, current rating, temperature etc.
2. Component temperature shold follow below:
∆T
Chapter 133 Supports colors 262K 262K 262K 262K 262K Optical Specification Brightness control keyboard hotkeykeyboard hotkeykeyboard hotkeykeyboard hotkeykeyboard hotkey Contrast controlNoNoNoNoNo Suspend/Standby controlYe s Ye s Ye s Ye s Ye s Electrical Specification Supply voltage for LCD display (V)3.3 3.3 3.3 3.3 3.3 Supply voltage for LCD backlight (Vrms)690 690 690 690 690 AC Adapter ItemSpecification Vendor & model name ADAPTER ADP-65DB BG65W 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 - 265 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 84% minimum, when measured at maximum load under 115V(60Hz). Output Ratings (CV mode) DC output voltage 19.0V 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.) 3.5A (max.) Output Ratings (CC mode) DC output voltage 19.0 Constant output 3.5A Dynamic Output Characteristics Start-up time 3 sec. (@115Vac) Hold up time 6 ms min. (@120 Vac input, full load) Over Voltage Protection (OVP) 25 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 4242 Vdc for 1 second Leakage current 60uA at 254Vac Regulatory Requirements 1. FCC class B requirements(USA) 2. VDE class B requirements(German) 3. VCCI classII requirements(Japan) LCD ItemSpecification
34Chapter 1 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. Working (G0/S0) Individual devices such as the CPU and hard disk may be power managed in this state. Standby (S1) CPU in Stop Clock state VGA Standby, turn off back-light PCMCIA Standby Audio Power Down Hard Disk Spin Down motor Super I/O Power down Suspend to RAM (S3) CPU set power down VGA Suspend PCMCIA Suspend Audio Power Down Hard Disk Power Down CD-ROM Power Down Super I/O Low Power mode Save to Disk (S4) Also called Hibernate state. System saves all system states and data onto the disk prior to power off the whole system. Environmental Requirements ItemSpecification Temperature Operating +5~+35 °C Non-operating -20~+50 °C Non-operating -20~+50 °C (storage package) Humidity Operating 10% to 90% RH, non-condensing Non-operating 10% to 90% RH, non-condensing (unpacked) Non-operating 10% to 90% RH, non-condensing (storage package) Vi bra ti on Operating (unpacked) 5~500Hz: 1.0G Non-operating (unpacked) 50~500Hz: 2.16G Mechanical Specification ItemSpecification Dimensions 322mm (W) x 272mm (D) x 38.0 mm(H) for 14.1 LCD model 327mm (W) x 272mm (D) x 38.5mm (H) for 15.0 inch model Weight 6.71lb~7.2lb (including HDD, CD-ROM, FDD and BATT) for 14.1 inch model 6.78lb ~7.5lb(including HDD, CD-ROM, FDD and BATT) for 15.0 inch model I/O Ports 1 parallel port (25 pins) EPP/ECP capability, 1 CRT port (15 pins) supports DDC 2B, 1 TV-out connector, 1 microphone-in port, 1 headphone-out with SPDIF port, 1 AC adapter jack (2 pins), 1 type III or type II PCMCIA card bus slots, 3 USB ports (4 pins), 1 RJ-11/RJ-45 port Drive Bays One Material Plastic PC+ABS (Bayer OM105Q) Indicators Power, Media activity, Battery charge, Wireless communication, Caps lock, Num lock and Scroll lock indicators
Chapter 135 Switch Power switch Lid switch Internet switch Wireless ON/OFF switch E-mail switch Memory Address Map Memory AddressSizeFunction 00100000h-000F0000h 64KB System BIOS 000CD000h-000C0000h VGA BIOS 000C0000h-000A0000h 128 KB Video memory (VRAM) 000A0000h-00000000h 640KB Conventional memory I/O Address Map I/O AddressFunction 000-00F DMA controller-1 020-021 Interrupt controller-1 040-043 Timer 1 060, 064 Keyboard controller 38859 chip select 061 System speaker out 040B DMA controller-1 061 System speaker 070-071 Real-time clock and NMI mask 080-08F DMA page register 0A0-0A1 Interrupt controller-2 0C0-0DF DMA controller-2 0F0-0FF Numeric data processor 170-177 2nd EIDE device (CD-ROM) select 1F0-1F7 1st EIDE device (hard drive) select 220-22F Audio 240-24F Audio (optional) 278-27F Parallel port 3 378,37A Paraller port 1 3B0-3BB 3C0-3DFVideo Controller 3F0h-3F7 Standard Floppy Disk Controller 3F0-3F7 Floppy disk controller 480-48F, 4D6 DMA controller-1 4D0-4D1 CF8-CFFPCI configuration register IRQ Assignment Map Interrupt ChannelFunction(Hardware) IRQ00 System timer IRQ01 Keyboard IRQ02 Programmable Interrup Controller IRQ03 Free by default or Generic Mechanical Specification ItemSpecification