Acer Extensa 2700 Service Guide

22Chapter 1
CD-ROM Interface
ItemsSpecification
Vendor & Model Name QSI SCR242
Mitsumi SR244W1
Performance Specification
Brust Data Transfer rate  PIO mode 4:
           16.7 MB/sec Max. (Mode 0~4)
Multi-word DMA mode 2:
           16.7 MB/sec Max. (Mode 0~2)
Ultra DMA mode 2:
           33.3MB/sec Max.
Access time (typ.) QSI-
Random: 90 ms
Full Stroke: 180 ms
Mitsumi-
Random: 100 ms
Full Stroke: 240 ms
Rotation speed 5100 rpm for QSI
5400 rpm for Mitsumi 24X CAV mode
Data Buffer Capacity 128 KB...

Chapter 123
Average Full Access time (typ.) Random
CAV mode 110 msec typical 150 
msec average max
Full Stroke
CAV mode 200 msec typical 260 
msec average maxDVD-5:
Random
  120 msec typical
  160 msec average max
Full Stroke
  270 msec typical
  350 msec average max
DVD-9:
Random
  150 msec typical
  200 msec average max
Full Stroke
  340 msec typical
  450 msec average max
DVD-RAM (2.6G)
Random
   200 msec typical
   300 msec average max
Full Stroke
   300 msec typical
   600 msec average max
DVD-RAM...

24Chapter 1
Transfer rate (KB/sec) Read Sustained:
           DVD-ROM  MAX 8X CAV (MAX 10800 KB/sec)
           CD-ROM    MAX 24X CAV (MAX 3600 KB/sec)
Write:
           CD-R          4X, 8X (CLV), Max 16X, MAX 24X (ZCLV)
           CD-RW       4X (CLV)
           HS-RW       4X,8X, 10X (CLV)
ATAPI Interface:
           PIO mode  16.6 MB/sec :PIO Mode 4
           DMA mode 16.6 MB/sec:Multi word mode 2
           Ultra DMA mode 33.3MB/sec: Ultra DMA mode 2
Buffer rate 2MB
Access time DVD-ROM 180 ms typ....

Chapter 125
Disc Diameter 12cm and 8cm
Capacity 2048 bytes/sector (DVD)
2048 bytes/block (CD Mode-1 and Mode-2 Form-1)
2336 bytes/block (Mode-2)
2328 bytes/block (Mode-2 Form-2)
Operation environment for “write/rewrite” application
Host Machine IBM compatible PC (Pentium 166 MHz or above)
OS MS-Windows 90/ME/2000/XP/NT 4.0
Memory Min. 128MB required
Hard Disk Empty Storage Capacity:100 MB or more
Average access time: 20ms or less
Disc Diameter 12cm and 8cm
Recommended MediaCD-R:
AMT, CMC, Csita, Delphi,...

26Chapter 1
  
 
Loading mechanism Manual load/DC brushless mortor system
Audio Interface
ItemSpecification
Audio Controller Cirrus Logic CS4299-XQ (RTL ALC655 which one is correct?
Audio onboard or optional Built-in
Mono or Stereo Stereo
Resolution 20 bit stereo Digital to Analog converter
18 bit stereo Analog to Digital 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 Yes...

Chapter 127
 
  CRT Display Resolutions
Resolution8 bit 
(256colors)16 bits
(Hi 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 NS PC87392
Number of parallel port 1
Location Rear side
Connector type 25-pin D-type
Parallel port...

28Chapter 1
  
Keyboard
ItemSpecification
Keyboard controller Mitsubishi LPC keyboard controller M38857
Keyboard vendor & model name Darfon/Sunrex
Total number of keypads 84-/85- key
Windows keys Yes
Internal & external keyboard work simultaneously Yes
Battery 
ItemSpecification
Vendor & model name Sanyo/Simplo
Battery Type Li-ION 
Pack capacity  2000mAH per cell
Number of battery cell 8
Package configuration 4 serial 2 parallel
Output voltage  14.4Vdc (nominal)
LCD
ItemSpecification
Vendor & model name...

Chapter 129
 
Nominal frequency (Hz) 50-60
Frequency variation range (Hz) 47-63
Input voltage range (Vrms) 90-270
Inrush current The maximum inrush current will be less than 50A and 100A when the adapter 
is connected to 115Vac and 230Vac respectively.
Efficiency  It should provide an efficiency of 80% minimum, when measured at maximum 
load under 115Vac.
Output Ratings (CV mode)
DC output voltage 19V
Noise + Ripple  300mVp-pmax (20 MHz bandwidth)
Load 0(min) 3.16A(max)
Output Ratings (CC mode)
DC output...

30Chapter 1
Hibernation Mode
Enter Hibernation Mode (suspend to HDD) 
when
1.Hibernation hot-key is pressed and 
system is ready to enter Hibernation mode
2.System Hibernation timer expires and 
system is ready to enter Hibernation mode.TAll power shuts off
Display Standby Mode
Keyboard, built-in touchpad, and an external 
PS/2 pointing device are idle for a specified 
period.
TThe display shuts off
Hard Disk Standby Mode
Hard disk is idle within a specified period of 
time.
THard disk drive is in...

Chapter 131
Indicators Power-on, Standby, Battery Status, Media Access, CapsLock and NumLock
Switch
Power
Mechanical Specification
ItemSpecification