Acer Aspire 1800 Service Guide
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Chapter 123 NOTE: Above table lists some system memory configurations. You may combine DIMMs with various capacities to form other combinations. . . Memory Combinations Slot 1Slot 2Total Memory 256/512MB 0 MB 256MB/512MB 256/512MB 256MB 512MB/768MB 256/512MB 512MB 768MB/1024MB LAN Interface ItemSpecification Supports LAN protocol 10/100 Mbps or 1Gbps LAN connector type RJ45 LAN connector location Rear side Modem / Bluethooth Interface ItemSpecification Data modem data baud rate (bps) 56K Supports...
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24Chapter 1 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% Optical Drive Interface ItemSpecification Vendor & model name HLDS GSA-4080N 8X SuperMulti Performance Specification CD-R/RW DVD-ROM Transfer rate...
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Chapter 125 Video name M24P Chip voltage Core/1.2V, 1.5V Supports ZV (Zoomed Video) port No Video Resolution Mode (for both LCD and CRT) Resolution16 bits (High color)32 bits (True color) 1440*900 (WXGA) Yes Yes 1680*1050(WSXGA+) Yes Yes USB Port ItemSpecification USB compliancy level 2.0 OHCI USB 2.0 Number of USB port 4 Location Left side and right side PCMCIA Port ItemSpecification PCMCIA controller ENE CB1410 CardBus Supports card type Type II Number of slots One type-II Access location...
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26Chapter 1 NOTE: 1. Li-ion Battery: Connect 1K % ohm resistor to GND in Battery PCB. NOTE: B/I pin: Battery can be Charged/Discharged only while this pin is connected to GND. LCD Inverter Specification 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...
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Chapter 127 Features 1. Input voltage is wide range 10Vdc~20Vdc 2.Brightness adjustment by PWM burst mode 3.Automatic brightness compensation for input voltage variation 4.Output over voltage protection 5.Output shorted circuit protection 6.Abnormal input (22~29Vdc) without safety issues
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28Chapter 1 Electrical Characteristics No .ItemSymbolMin.Typ .Max.UnitComment 1Input voltage INV_PWR 10 16 20 V Note 1 2Input current Iin -- 0.33 -- A 3 Lamp current IL 3.3 -- 6.8 mA DAC=0V *Note 2 4 Lamp current IL 2.7 -- 6.3 mA DAC= 0.5V 4FrequencyF 506070KHz* Note 3 5 Output power Pout -- -- 4.8 W When two lamps total 9.6W 6 Efficiency η76% -- -- -- 7Starting voltageVs 1600 -- --- V At 0 ’C 8 Starting time Tvs 1 -- 1.5 Sec 9 Dispoff# 2.8 3.3 3.6 V Backlight on/off signal 0 0.5 0.8 V Low level 10...
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Chapter 129
NOTE:
*1. The display can not happen flicker or shutdown.
*2. Limited lamp maximum current by DAC_BRIC signal:
DAC_BRIG signal comes from system with internal resistance of 3K .
When add 1V DAC, the 100% Lamp current will decrease 0.5mA.
*3. Inverter operating frequency should be within specification (50~70kHz) at max. and min.
brightness load.
*4. 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...
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30Chapter 1 LCD ItemSpecification Vendor & model name AU B170PW01AU B170PW02- V. 0Samsung LTN170WX- LO1LG LP170WX2- A4LG LP170W02- A4 Mechanical Specifications LCD display area (diagonal, inch)17” 17” 17” 17” 17” Display technology TFT TFT TFT TFT TFT Resolution WXGA (1440*900)WXGA (1440*900)WXGA (1440*900)WSXGA (1440*900)WSXGA (1680*1050) Supports colors 262K 262K 262K 262K 262K Optical Specification Brightness control keyboard hotkeykeyboard hotkeykeyboard hotkeykeyboard hotkeykeyboard...
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Chapter 131 DC output voltage 18.0 ~ 20.0 Constant output 7.9A Dynamic Output Characteristics Start-up time 3 sec. (@115 Vac and 230Vac full load) Hold up time 5ms min. (@115 Vac input, full load) Over Voltage Protection (OVP)25V 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 240Vac/60Hz...
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32Chapter 1 Mechanical Specification ItemSpecification Dimensions 15.83” x 10.96” x1.61~1.77” 402mm x 278.3mm x 41~45 mm Weight 4.5Kb/9.9.lbs with 17” Wide LCD+DVD-ROM I/O Ports 4 USB 2.0 ports, one VGA port, one TV-out , one build-in microphone , microphone-in / Line-in port, Line out/headphone-out/speaker-out/ SPDIf port, one IEEE 1394 port, one RJ-11 Jack, one RJ-45 Jack, one DC-Jack, 5-in-1 card reader slot (xD/SD/MMC/MS-Pro/SM), CIR, MCE receiver with USB outside device, Kensingtone Lock Drive...