T43p no longer recognizes 2877 docking station

My ThinkPad T43p no longer recognizes when it's installed in my ThinkPad Dock II (2877) docking station. Thinkpad has latest possible BIOS and Lenovo power management updates. It runs Windows XP SP3 at latest possible updates. It normally runs in the docking station in my office, but I removed it the other day to use it in the living room. When I re-installed it, it booted as if on battery power and remained running solely on battery power.
I have always cold-docked and undocked this machine, i.e., the PC is shut down before undocking and before re-docking.
On the docking station, none of the attached devices are recognized ( e.g., mouse, hard disk). Strangely, the docking station power button does boot the PC and power it down, but none of the other docking station functions work including the eject button.
On the laptop Windows XP software, there is no Eject PC in the START/shutdown program list.
I've cleaned the umbilical connector strip on the base of the T43p and on the docking station with compressed air.
The T43p works fine undocked using the brick power supply, fully charging the battery. The ports on the laptop all work fine.
I'd appreciate suggestions short of ditching the docking station and the laptop.

Which docking station - make and model?

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Undocking a T42P from a 2877 docking station with an ultrabay 2000 HDD???

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Thanks for the reply, Huffer. I was plugging it into one of the 3.0 ports. I just tried the 2.0 port. Disk Management successfully loaded, and presented me with an "Initialize Disk" window (I hit "Cancel"). It showed that HDD as "Not initialized" and having no partitions (all space unallocated). No new drives appeared in Computer.
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since ios7 update on the ipad, it no longer plays music through the speakers, i have searched online and done the soft reset etc but to no avail, its still charges but there is no sound out of the speakers, plays through the Ipad. I intially thought the docking station was broken put plays my ipod 3rd gen which is currently on 6.1.3?
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Compatible with Type 2877 docking station?

Greetings!
I'm trying to figure out whether my pre-existing docking station (Type 2877, with American power cord) is compatible with the new members of the X-series of Thinkpads? (I'm probably leaning more towards a 13.3" laptop, so it's also relevant whether the SL300 is compatible)
Thank you in advance!

The last generation of ThinkPads that can use this dock are T4x, R5x and X3x units. All of them utilize Pentium M CPUs.
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Cheers,
George
In daily use: R60F, R500F, T61, T410
Collecting dust: T60
Enjoying retirement: A31p, T42p,
Non-ThinkPads: Panasonic CF-31 & CF-52, HP 8760W
Starting Thursday, 08/14/2014 I'll be away from the forums until further notice. Please do NOT send private messages since I won't be able to read them. Thank you.

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Go to Solution.

Quoting from P/N 67P5254 (ThinkPad Dock II User's Guide):
Emergency Eject:
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No longer can play though docking stations.

I have two compatible docking stations, a Bose portable and a shoe to connect to our built in home system. Always worked fine on both until today. This device still running on os version 4.3.3, so recent upgrade of os is not the culprit. Suspect something wrong in the connection. In both cases the IPod touch recognizes it's connected to a docking station and starts to charge, but it continues to play music through it's little inboard speaker instead of connecting to big speakers through the docking station.
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Thanks.

- Inspect the dock connector for bend or missing contacts, foreign material, corroded contacts, broken, missing or cracked plastic.
- Does the iPod play OK throiugh the headphone jack? If yes then sometimes this works
Try:
- Reset the iOS device. Nothing will be lost
Reset iOS device: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Reset all settings
Go to Settings > General > Reset and tap Reset All Settings.
All your preferences and settings are reset. Information (such as contacts and calendars) and media (such as songs and videos) aren’t affected.
- Restore from backup. See:
iOS: How to back up
- Restore to factory settings/new iOS device.
If it does not play through the headphone jack
- Try cleaning out/blowing out the headphone jack. Try inserting/removing the plug a dozen times or so.
Try the following to rule out a software problem
- Reset the iPod. Nothing will be lost
Reset iPod touch: Hold down the On/Off button and the Home button at the same time for at
least ten seconds, until the Apple logo appears.
- Reset all settings
Go to Settings > General > Reset and tap Reset All Settings.
All your preferences and settings are reset. Information (such as contacts and calendars) and media (such as songs and videos) aren’t affected.
- Restore from backup
- Restore to factory settings/new iPod.
- Make an appointment at the Genius Bar of an Apple store. Seems you have a bad headphone jack.
Apple Retail Store - Genius Bar
Apple will exchange your iPod for a refurbished one for this price. They do not fix yours.
Apple - iPod Repair price
A third-party place like the following will replace the jack for less. Google for more.
iPhone Repair, Service & Parts: iPod Touch, iPad, MacBook Pro Screens
Replace the jack yourself
iPod Touch Repair – iFixit

T43p no longer recognizes 2877 docking station

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