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...

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...

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...

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...

1-32Service Guide
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...

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...

1-34Service Guide
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...

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...

1-36Service Guide
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...

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,...