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Service Hints & Tips |
Document ID: GSMH-39DDR6 |
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TP 750,755C/CS - SDLC Communication Errors on 3545 Dock 1
Applicable to: World-Wide
Symptom:
3270PC program displays error message 1201 when loading an SDLC driver in OS/2 2.1, or communications can't be established with the SDLC adapter in the dock 1.
Problem Isoaltion Aids:
Check for the following:
1. Incorrect I/O card logic signal. Only current I/O cards with EC C82182 written on them are correct.
and / or
2. The SDLD card and the ThinkPad Audio feature have the same DMA address.
Fix:
If the I/O card EC is any number other than EC C82182 do steps 1 and 2. If the card is at EC C82182 only do step 2.
1. Replace the I/O card P/N66G3571. The new level card has EC C82182 written on the FRU box and the card. This EC corrects the signal level within the adapter.
2. Disable the ThinkPad Audio Feature as follows.
a. Select "System Information" from the menu of "PS2.EXE".
b. Select "Disable" from audio device IRQ selection. If audio drivers were already installed (e.g. from the Audio Feature Diskette), remove them before you disable the audio feature.
Search Keywords |
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Hint Category |
Communications, Docking/Port Replicators | |
Date Created |
07-09-95 | |
Last Updated |
22-01-99 | |
Revision Date |
09-06-99 | |
Brand |
IBM ThinkPad | |
Product Family |
ThinkPad 750, ThinkPad 755C/CS, ThinkPad Docking Stations | |
Machine Type |
9545, 3545 | |
Model |
Various | |
TypeModel |
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Retain Tip (if applicable) |
H043674 | |
Reverse Doclinks |