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Service Hints & Tips

Document ID: GSMH-39PF7X

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TP 755CE/CSE/CD/CV/CDV/CX,760 - Megahertz PCMCIA Modem 28.8/14.4 and Windows 95

Applicable to: World-Wide

Symptom:
TP755cx can use the Mwave modem (Mwave 2.0) but cannot dial out using Megahertz PCMCIA modem in Windows 95

Problem Isolation Aid:
Win95's device manager shows that the port status of the Communication Port are:

Com 1:
- Does not show "COM1" but can be identified by its interrupt 4.
- "This device is causing a resource Conflict Troubles shooter in Help (Code 15)".
- the Megahertz is automatically assigned to com1. No other com port can be set.

Com2:
- normal & used by Mwave.
- the Megahertz modem does not work even the com2 or Mwave is disabled.

Workaround:
Enable the serial 1 in the BIOS setting so that COM1 is used by the serial 1 device, then the Megahertz modem will adjust to the next available com port: COM3 (as COM2 is used by Mwave modem) and everything work fine even there are 2 extra com ports are showing error.

Search Keywords

Hint Category

Mwave

Date Created

04-09-96

Last Updated

30-03-98

Revision Date

13-03-99

Brand

IBM ThinkPad

Product Family

ThinkPad 755CE/CSE, ThinkPad 755CX, ThinkPad 755CV, ThinkPad 755CD, ThinkPad 755CDV, ThinkPad 760C, ThinkPad 760E, ThinkPad 760CD, ThinkPad 760ED, ThinkPad 760XD, ThinkPad 765D

Machine Type

9545, 9546

Model

Various

TypeModel

Retain Tip (if applicable)

N/A

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