Acer Travelmate 7300 Service Guide

							1-28Service Guide
Recovery from power down is the opposite procedure.
· SIR (UART)
The FIR port is basically UART2.  The UART operates off of a 14MHz clock. The IR port has a
DA converter. The UART2 disable control circuit is within the 87338 chip.
1.   Tri-state the UART2 output pins.
2.   Disable the 14MHz clock (If the floppy and the serial port are also disabled).
If the 14MHz is disabled through the National power down mode,
then all serial and floppy functions will fail.
Recovery from power down is the opposite procedure.
· Parallel port
Since there are no clock operations on the parallel port, the requirement to power down this
area of the 87338 chip are less critical.  Also, if the floppy is operated through the parallel port,
the parallel port must be enabled to allow operation to continue.
1.   Disable the parallel port decode.
· PCMCIA Thermal
MD3_ATFINT# of U3(LM75 in media Board)
· Modem
Modem power enable.  This pin[pin-43(SM5_MODPON#) of SMC] will control the power to all of
the modem chips.  Once powered down, the modem chip set has no means of recovery except
through full software initialization. 
						

							System Introduction1-29
· CPU
The CPU clock.  The clock to the CPU can be physically stopped.  The chip is static, so the
current state is retained.  During a clock stop state, the CPU is stopped and the internal cache
and external bus signals are inoperative.  Therefore, any bus master or DMA activity is halted
as well.
CPU thermal alarm.  Thermal alarm is signaled by the assertion of the one control pin [pin4 of
U7(PT3_ATFZNT#) from MMO module], will trigger a lower speed operation through clock
throttling while the CPU temperature is higher than 80
°C, shut down the system while higher
than 95
°C.  The system returned to normal condition while the CPU temperature is lower to
75
°C.
· System
The system can also be put into a low power state.  However, this state can only be performed
after the individually power managed components have achieved their low power state.  The
state where the system is put into lower power mode is termed static suspend (suspend-to-
memory).
System thermal alarm.  System thermal rating is obtained by the a thermal sensor aside
charger and signaled by the pin-64(SM5_THERM_SYS) of SMC.  Full charge to battery is only
available when the system temperature is less than 56
°C while trickle charge higher than 58
°C.
System shutdown will be automatically executed while temperature is higher than 85
°C.
1.6.7.3 Suspend
There are two forms of suspend and resume on the notebook, static suspend(suspend-to-memory)
and zero-volt suspend(suspend-to-disk).  Zero-volt suspend is, as the name implies, an OFF
condition.  The entire computer state is saved to a disk file and the computer is turned off.  In static
suspend, all components are placed into an idle state and the clocks are stopped to the entire
machine, except for the 32 kHz clock for memory refresh.
In either case, all separate components in the system are put into their lowest power state at the
start of either suspend process.
1.  
Devices turned off.  The HDD(except for suspend-to-disk since the file goes there), CD-ROM,
floppy are turned off at the start of any suspend.
2.  
Devices brought to a low power state.  The audio, serial port transceiver (MAX213), FIR,
keyboard controller, PCMCIA controller chip will be put into a low power state instantly through a
pin asserting or prematurely expiring the device timer.
3.  
Devices zero-clocked.  Since the remainder of the devices (video, CPU, IDE controller, ISA bus,
87338’s devices (serial and floppy)) are, by design, static devices, their lowest power states are
achieved by removing the clock to the device.
The very act of going into a suspend-to-memory means that the enable pin to the clock generator
chip is deasserted, removing all but the 32 kHz signal from the board.  This excludes, however, the
clocks dedicated to the internal modem.  They will remained powered and oscillating. 
						

							1-30Service Guide
For suspend-to-disk, all devices are read, saved to local memory and the local memory, video
memory are saved to a disk file which is created by SLEEP MANAGER utility.  The machine is then
commanded to an off state.
· Resume events for zero-volt suspend(suspend-to-disk)
The only resume event for zero-volt suspend is the raising of the lid of the computer.  This
electronically enables the power to the rest of the machine.
· Resume events for static suspend (suspend-to-memory)
1.
Resume on schedule.  In BIOS Setup, this time field can be enabled then set to any
value.  It is possible to set it for a date and time in the past.  In this case, the unit will
resume at the next occurrence of the specified time, date ignorant.  If a proper future
date is specified, then the resume will only happen long enough to evaluate the date and
the machine will re-suspend.  After a successful resume has taken place, the resume on
schedule field will automatically disable. .  Enabling of this field will disable the suspend-
to-disk function, except for battery very low.  The auto-disable of resume on schedule still
allows the unit to suspend to disk at the next occurrence of a suspend condition with the
lid closed.
2.
Lid switch.  If the suspend-to-disk option is used, then the lid switch will turn the unit on,
reboot and then resume to the application at the end of POST.  If the suspend-to-
memory option is in place, or a suspend-to-disk block is present, then the lid switch
opening will resume the machine.
3.
Keystroke.  Any key use on the internal keyboard will wake up the system from static
suspend.  In addition, a keystroke from an external keyboard on the primary PS/2 port
will also wake the system up.  Mouse motion from any source will not wake the system
up.
4.
Battery very low.  The SMC will wake the SMI if the battery reaches a very low condition
during static suspend.
1.6.8 CPU Module
Table 1-16 CPU Module Specifications
ItemSpecification
CPU Type
Pentium II 266 MHz
Package TCP
Module replaceable Yes
Working speed66MHz
CPU voltage 2.5V I/O and 1.6V core interface
Cache SRAM size 512KB
Remark: include North bridge(MTXC), voltage regulator and thermal sensor 
						

							System Introduction1-31
1.6.9 BIOS
Table 1-17 BIOS Specifications
ItemSpecification
BIOS programming vendor Acer
BIOS version V3.0
BIOS ROM type Intel 28F002, Flash ROM with boot block protection
BIOS ROM size 256KB
BIOS ROM package type 40-pin TSOP
Same BIOS for TFT LCD type Yes
Boot from CD-ROM feature Yes
Support protocol PCI V2.1, APM V1.1, E-IDE and PnP(ESCD format) V1.0a
BIOS flash security protection Provide boot-block protection1 feature.
Unlock BIOS feature If user changes the BIOS Setup setting and causes the system
cannot boot, press 
k before system turns-on till POST
completed, then system will load BIOS Setup the default settings.
1.6.10 System Memory
Table 1-18 System Memory Specifications
ItemSpecification
SIMM data bus width 64-bit
SIMM package 144-pin, Small Outline Dual-In-line-Memory-Module (soDIMM)
SIMM size 8MB, 16MB, 32MB, 64MB
SIMM speed 60ns
SIMM voltage 3.3V
SDRAM Yes
                                                     1  Boot-block is an area inside of BIOS with the program for system boot. Avoid this area to be modified while BIOS flash,
then system still can boot even the BIOS flash process is not successful. 
						

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1.6.10.1  SIMM Memory Combination List
Table 1-19 SIMM Memory Combination List
RAM SizeBank ABank B
8MB 8MB 0MB
8MB 0MB 8MB
16MB 8MB 8MB
16MB 16MB 0MB
16MB 0MB 16MB
24MB 8MB 16MB
24MB 16MB 8MB
32MB 16MB 16MB
32MB 32MB 0MB
32MB 0MB 32MB
40MB 8MB 32MB
40MB 32MB 8MB
48MB 16MB 32MB
48MB 32MB 16MB
64MB 32MB 32MB
64MB 64MB 0MB
64MB 0MB 64MB
72MB 8MB 64MB
72MB 64MB 8MB
82MB 16MB 64MB
82MB 64MB 16MB
96MB 32MB 64MB
96MB 64MB 32MB
128MB 64MB 64MB
1.6.11 Video Memory
Table 1-20 Video Memory Specification
ItemSpecification
Memory size 1.984MB
Memory location Inside of graphic controller NMG2160 
						

							System Introduction1-33
1.6.12  Video Display Modes
Table 1-21 Video Display Specification
ItemSpecification
Chip vendor NeoMagic
Chip name NMG2160
Chip voltage 3.3 Volts
ZV port support (Y/N) Yes
Graph interface (ISA/VESA/PCI) PCI bus
Max. resolution (LCD) 800x600 (16M colors) True Color
Max. resolution (Ext. CRT) 1024x768 (64K colors) High Color
1.6.12.1  External CRT Resolution Modes
Table 1-22 External CRT Resolution Modes
Resolution x Color
on Ext. CRT
CRT Refresh RateSimultaneous on
TFT LCD
CRT onlySimultaneousSVGA
640x480x256 60,75,85 60 Y
640x480x64K 60,75,85 60 Y
640x480x16M 60,75,85 60 Y
800x600x256 60,75,85 60 Y
800x600x64K 60,75,85 60 Y
800x600x16M 60,75,85 60 Y
1024x768x256 60 60 Y
1024x768x16M 60,75,85 60 Y
1.6.12.2  LCD Resolution Modes
Table 1-23 LCD Resolution Modes
Resolution x color on LCD onlySVGA TFT LCD
640x480x256 Y
640x480x64K Y
640x480x16M Y
800x600x256 Y
800x600x64K Y
800x600x16M Y
1024x768x256 Y
1024x768x64K Y 
						

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1.6.13 Audio
Table 1-24 Audio Specifications
ItemSpecification
Chipset Neomagic-3097
Audio onboard or optional Built-in
Mono or stereo stereo
Resolution 16-bit
Compatibility Sound Blaster Game, Windows Sound System, Plug&Play
ISA 1.0a
Music synthesizer 20-voice, 72 operator, FM music synthesizer
Mixed sound sources Voice, Synthesizer, Line-in, Microphone, CD
Voice channel 8-/16-bit, mono/stereo
MPU1-401 UART support Yes
Internal microphone Yes
Internal speaker Yes
Internal speaker enabled/disabled function By BIOS Setup
Microphone jack Yes, left side
Headphone jack Yes, left side
Sound Blaster PRO V3.01 Compatibility
Base address (by BIOS Setup) 220h / 230h / 240h / 250h
MPU address (by BIOS Setup) 300h / 310h / 320h / 330h
IRQ setting (auto-allocation) IRQ10/ 9/ 7/ 5
DMA channel (auto-allocation) DRQ0/ 1/ 3
1.6.14 PCMCIA
Table 1-25 PCMCIA Specifications
ItemSpecification
Chipset Cirrus Logic CL-PD6832
Supported card type Type-II / Type-III (include CardBus Card)
Number of slots Two Type-II or one Type-III
Access location Left side
ZV port support Yes
                                                     1  MPU-401 is a Roland MIDI standard that most game software use for audio. 
						

							System Introduction1-35
1.6.15 Parallel Port
Table 1-26 Parallel Port Specifications
ItemSpecification
Number of parallel ports 1
ECP/EPP support Yes (by BIOS Setup)
ECP DMA channel (by BIOS Setup) DRQ1 or
DRQ3
Connector type 25-pin D-type
Connector location Rear side
Selectable parallel port (by BIOS Setup) Parallel 1 (378h, IRQ7) or
Parallel 2 (3BCh, IRQ7) or
Parallel 3 (278h, IRQ5) or
Disabled
1.6.16 Serial Port
Table 1-27 Serial Port Specifications
ItemSpecification
Number of serial ports 1
16550 UART support Yes
Connector type 9-pin D-type
Connector location Rear side
Selectable serial port (by BIOS Setup) Serial 1 (3F8h, IRQ4) or
Serial 2 (2F8h, IRQ3) or
Serial 3 (3E8h, IRQ4) or
Serial 4 (2E8h, IRQ3) or
Disabled
1.6.17 Touchpad
Table 1-28 Touchpad Specifications
ItemSpecification
Vendor & model nameSynaptics TM1202SC
Power supply voltage 5V
Location Palm-rest center
Internal & external pointing device work simultaneously No
External pointing device (serial or PS/2 mouse) hot plug Yes, (if it is enabled in BIOS Setup already)
X/Y position resolution 500 points/inch
Interface PS/2 (compatible with Microsoft mouse driver) 
						

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1.6.18 SIR/FIR
Table 1-29 SIR/FIR Specifications
ItemSpecification
Vendor & model name IBM(31T1100A)
Input power supply voltage 5 V
Transfer data rate 115.2 Kbit/s(Max)(SIR)~4 Mbit/s(FIR)(Max)
Transfer distance 100cm
Compatible standard IrDA (Infrared Data Association)
Output data signal voltage level
   Active
   Non-active0.5
Vcc-0.5
Angle of operation
±15°
Number of IrDA ports 1
16550 UART support Yes
SIR location Rear side
Selectable serial port (by BIOS Setup) 2F8h, IRQ3 or
Disabled
1.6.19 LCD
Table 1-30 LCD Specifications
ItemSpecification
Vendor & Model Name LG-LP133X1
Mechanical Specifications
Diagonal LCD display area 13.3”
Display technology TFT
Resolution XGA (1024x768)
Supported colors 262,144 colors
Optical Specification
Contrast ratio 150 (typ.)
Brightness (cd/m2)70 (typ.)
Brightness control keyboard hotkey
Contrast control none
Electrical Specification
Supply voltage for LCD display 3.3 (typ.)
Supply voltage for LCD backlight (Vrms) 700 (typ.) 
						

							System Introduction1-37
1.6.20 CD-ROM
Table 1-31 CD-ROM Specifications
ItemSpecification
Vendor & model name KYUSHU MATSHITA: UJDA110
Internal CD-ROM/FDD hot-swappable No
BIOS auto-detect CD-ROM existence Yes
BIOS support boot from CD drive feature Yes
Performance specification
Speed 2100KB/sec(14X speed)
Access time 150ms
Buffer memory 128kbyte
Interface Enhanced IDE (ATAPI) compatible (communicate with system
via system E-IDE channel 2)
Applicable disc format Red-Book, Yellow-Book, CD-ROM XA, CD-I, Bridge (Photo-
CD, Video CD), CD-I, CD-I Ready, CD-G and Multi-session
(Photo-CD, CD EXTRA)
Loading mechanism Drawer type, manual load/release
Power Requirement
Power supply voltage (V) 5
1.6.21 Diskette Drive
Table 1-32 Diskette Drive Specifications
ItemSpecification
Vendor & model name Mitsumi D353F2
Internal FDD/CD-ROM hot-swappable No
BIOS auto-detect external FDD existence Yes
External FDD hot-swappable Yes
Floppy Disk Specifications
Media recognition 2DD (720K) 2HD (1.2M, 3-mode) 2HD (1.44M)
Sectors / track 9 15 18
Tracks 80 80 80
Data transfer rate (Kbits/s) 250 300 500 500
Rotational speed (RPM) 300 360 360 300
Read/write heads 2
Encoding method MFM
Power Requirement
Input Voltage +5V ± 10%