Acer Aspire 1200 Service Guide

							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