Acer Extensa 500 Service Guide
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Chapter 121 Video Memory ItemSpecification Fixed or upgradeable Fixed, built-in NM2097B video controller Video memory size 2MB Cache Memory ItemSpecification Cache controller ALi M1531 Tag RAM location U32 Tag RAM size 32 KB Tag RAM voltage 3.3V SRAM type PBSRAM SRAM size 512 KB SRAM location U37 SRAM configuration 64K*64 x1 SRAM speed Cycle time = 7ns SRAM voltage 3.3V 1st level cache control Always enabled 2st level cache control Always enabled Cache scheme control Fixed in write-back Video ItemSpecification Chip vendor NeoMagic Chip name NM2097B Chip voltage 3.3 Volts Supports ZV((Zoomed Video) port Yes Graph interface (ISA/VESA/PCI) PCI bus Maximun resolution (LCD) 1024x768 (256 colors) Maximnun resolution (CRT) 1024x768 (256 colors) Video Resolutions Modes ResolutionRefresh Rate CRT Only LCD/CRT Simultaneous
22 System Introduction 640x480x256 85 60 640x480x64K 85 60 640x480x16M 85 60 800x600x256 85 60 800X600X64K 85 60 1024x768x256 60, 75 60 Parallel Port ItemSpecification Parallel port controller NS PC97338VJG Number of parallel ports 1 Location Rear side Connector type 25-pin D-type connector, in female type. Parallel port function control Enable/Diable by BIOS Setup Supports ECP Yes (set by BIOS setup) Optional ECP DMA channel (in BIOS Setup)DMA channel 1 DMA Channel 3 Optional parallel port I/O address (in BIOS Setup)3BCh, 378h, 278h Optional parallel port IRQ (in BIOS Setup)IRQ5, IRQ7 Serial Port ItemSpecification Serial port controller NS PC97338VJG Number of serial ports 1 Supports 16550 UART Yes Connector type 9-pin D-type connector, in male type Location Rear side Serial port function control Enable/disable by BIOS Setup Optional serial port (in BIOS Setup)3F8h, 2F8h, 3E8h, 2E8h, Disabled Optional serial port IRQ (in BIOS Setup)IRQ4, IRQ11 Video Resolutions Modes ResolutionRefresh Rate
Chapter 123 Audio ItemSpecification Audio Controller Yamaha YMF715E Audio onboard or optional Built-in Mono or Stereo Stereo Resolution 16-bit Compatibility SB-Pro, Windows Sound System (WSS), MPU-401, OPL3, OPL3-SA3 Mixed sound source Voice, Synthesizer, Line-in, Microphone, CD Voice channel 8-/16-bit, mono/stereo Sampling rate 44.1 KHz Internal microphone Yes, on the left-higher corner of LCD panel Internal speaker / Quantity Yes / 2 pieces, on both hinge sides Supports PnP DMA channel DMA channel 0 DMA channel 1 DMA channel 7 Supports PnP IRQ IRQ3, IRQ5, IRQ7, IRQ9, IRQ10, IRQ11 PCMCIA ItemSpecification PCMCIA controller O2 OZ6833T Supports card type Type-II / type-III Number of slots Two type-II or one type-III Access location Right side Supports ZV (Zoomed Video) port Yes (for upper slot) Supports 32 bit CardBus Yes (IRQ9, for both slots) Modem ItemSpecification Chipset Lucent 1641B Fax modem data baud rate (bps) 56K Data modem data baud rate (bps) 56K
24 System Introduction Supports modem protocol V.90 data modem, V.90 fax modem, audio mode, and digital line protection operation Modem connector type RJ11 Modem connector location Right side Keyboard ItemSpecification Keyboard controller Mitsubishi M38867 Keyboard vendor & model name API Total number of keypads 84-/85-/89-key Windows 95 keys Yes Internal & external keyboard work simultaneouslyYe s Diskette Drive ItemSpecification Vendor & model name Misumi D353F3 Floppy Disk Specifications Media recognition 2DD (720KB) 2HD (1.2MB, 3-mode)2HD (1.44MB) Sectors / track 9 15 18 Tracks 80 80 80 Data transfer rate (Kbit/ s)250 ~ 300 500 500 Rotational speed (RPM)300 ~ 360 360 300 Read/write heads 2 Encoding method MFM Power Requirement Input Voltage (V) +5 +-10% Hard Disk Drive ItemSpecification Vendor & Model Name Hitachi DK226A-32uIBM DTCA- 23240IBM DKLA- 24320 Modem ItemSpecification
Chapter 125 Drive Format Capacity (MB) 3240 3240 4320 Bytes per sector 512 512 512 Logical heads 16 16 15 Logical sectors 63 63 63 Drive Format Logical cylinders 6282 6304 8944 Physical read/write heads 3 5 4 Disks 6 3 2 Spindle speed (RPM) 4000 4000 4200 Performance Specifications Buffer size 128KB 512KB 512KB Interface IDE(ATA-3) IDE IDE(ATA-4) Data transfer rete (disk- buffer, Mbytes/s)6.0~9.1 6.4~10.4 7.7~12.8 Data transfer, rate (host~buffer, Mbytes/s)16.6 (P IO m o de 4 )16.6 (PIO mode 4) 33.3 (Ultra DMA mode 2) DC Power Requirements Voltage tolerance 5+-5% 5+-5% 5+-5% CD-ROM ItemSpecification Vendor & Model Name TEAC CD-220EA-25/BE Performance Specification Transfer rate (KB/sec) 1,290KB/sec ~ 3,000KB/sec. (FULL - CAV) Access time (typ.) 180 mS Rotation speed 4280 rpm (typ.) Buffer memory 128 KB Interface ATAPI Applicable disc format CD-DA, CD-ROM (Mode-1, Mode-2), CD-ROM XA MODE-2 (FORM-1, FORM-2), Multi-Session Photo CD, CD-I, Video CD, Enhanced CD & CD PLUS Compatible Loading mechanism Drawer with soft eject and emergency eject hole Power Requirement Hard Disk Drive ItemSpecification
26 System Introduction Input Voltage 5 V Battery Pack ItemSpecification Vendor & model name Panasonic BTP-1831 Toshiba BTP-1731 Battery Type NiMH Pack capacity 3500 mAH Cell voltage 1.2 V Number of battery call 8 Package configuration 8 cells in series Package voltage 9.6 V DC-DC/Charger Board ItemSpecification Vendor & model name Ambit T62.101.C.00/01 Input voltage AC adapter: 19V-26V Battery: 7.5V-13V DC/DC converter output Output rating 5V 3.3V +12V 6V 3.3V SB Current (w/load, A) 0~5.8 0~3.3 0~0.12 0~0.1 0.01 Charger output Normal charge (charge while system is not operative)2.2A Backgound charge (charge even system is still operative)0.8A Battery-lower 2 level (V) 9.14V Battery-low 3 level (V) 8V Protection Charger protection Security timer control Over temperature protection Peak voltage detection DC/DC converter protection OVP (Over Voltage Protection, V) OCP (Over Current Protection, A) CD-ROM ItemSpecification
Chapter 127 Note: DC-AC inverter is used to generate very high AC voltage, then support to LCD CCFT backlight user, and is also responsible for the control of LCD brightness. Avoid touching the DC-AC inverter area while the system unit is turned on. Note: There is an EEPROM in the inverter, which stores its supported LCD type and ID code. If you replace a new inverter or replace the LCD with one of a different brand, use Inverter ID utility to update the ID information. LCD Inverter ItemSpecification Vendor & model nameAmbit T622.087.C.00 Input voltage (V) 7.3 (min.) - 22 (max.) Input current (mA)- - 700 (max.) Output voltage (Vrms, no load)1300 (min.) 155 1600 (max.) Output voltage frequency (kHz)40 (min.) - 65 (max.) Output current (mArms) (T62.087.C.00)0.7~5.9 (min.) 1.0~6.5 (typ.) 1.3~7.1 (max.) Output current (mArms) (T62.086.C.00)0.6~5.4 (min.) 1.0~6.0 (typ.) 1.4~6.6 (max.) LCD ItemSpecifications Vendor & model name 12.1 Hitachi TX31D27VC1CBB12.1 Sharp LM121SS1T53 Mechanical Specifications LCD display area (diagonal, inch)12.1 12.1 Display technology TFT DSTN Resolution SVGA (800x600) SVGA (800x600) Supports colors 262,144 colors 262,144 colors Optical Specification Brightness control keyboard hotkey keyboard hotkey Contrast control keyboard hotkey keyboard hotkey
28 System Introduction Electrical Specification Supply voltage for LCD display (V)3.0~3.6 (typ.) 3.3 (typ.) Supply voltage for LCD backlight (Vrms)650 (typ), 660 (max.) 650 (typ) Power Adapter ItemSpecification Vendor & model name Delta ADP-45GB Rev. E5 Input Requirements Maximum input current (A, @90Vac, full load)1.5 A 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 +19.0V~20.5V Noise + Ripple 300mvp-pmax (20Mhz bandwidth) Load 0 A (min.) 2.4 A (max.) Output Ratings (CC mode) DC output voltage +12V ~ +19V Constant output 2.75 ± 0.2 A Dynamic Output Characteristics Turn-on delay time 2 sec. (@115Vac) Hold up time 5 ms min. (@115 Vac input, full load) Over Voltage Protection (OVP) 26 V Short circuit protection Output can be shorted without damage Electrostatic discharge (ESD) 15kV (at air discharge) Dielectric Withstand Voltage LCD ItemSpecifications
Chapter 129 Primary to secondary 3000 Vac (or 4242 Vdc), 10 mA for 1 second Leakage current 0.25 mA max. (@ 254 Vac, 60Hz) Regulatory Requirements Internal filter meets: 1. FCC class B requirements. (USA) 2. VDE 243/1991 class B requirements. (German) 3. CISPR 22 Class B requirements. (Scandinavia) 4. VCCI class II requirements. (Japan) Power Adapter ItemSpecification
30 System Introduction Power Management This computer has a built-in power management unit that monitors system activity. System activity refers to any activity involving one or more of the following devices: keyboard, mouse, floppy drive, hard disk, peripherals connected to the serial and parallel ports, and video memory. If no activity is detected for a period of time (called an inactivity time-out), the computer stops some or all of these devices in order to conserve energy. This computer manages its power according to the way you use your computer. This means the computer delivers maximum power when you need it, and saves power when you don’t need the maximum — all without your intervention. There are no timers to set, because the power management system figures out everything for you. Power Management Modes Display Standby Mode Screen activity is determined by the keyboard the built-in touchpad, and an external PS/2 pointing device. If these devices are idle for the period determined by the computer’s power management system, the display shuts off until you press a key or move the touchpad or external mouse. “Automatic Dim” Feature The computer has a unique “automatic dim” power-saving feature. When the computer is using AC power and you disconnect the AC adapter from the computer, it automatically dims the LCD backlight to save power. If you reconnect AC power to the computer, it automatically adjusts the LCD backlight to a brighter level. Hard Disk Standby Mode The hard disk enters standby mode when there are no disk read/write operations within the period of time determined by the power management system. In this state, the power supplied to the hard disk is reduced to a minimum. The hard disk returns to normal once the computer accesses it. System Standby Mode The computer consumes very little power in Standby mode. Data remain intact in the system memory until the battery is drained. There is one necessary condition for the computer to enter Standby mode: qHeuristic Power Management Mode must be set to [ENABLED]. There are four ways to enter Standby mode: