Pin-out and signal names for 103 E-Unit

There is no additional wiring mods.  Did you follow the directions and move jumpers on Mother Board?  The supplements have wiring diagrams if I remember correctly, but this is pretty straight forward.  Make sure the antenna is not grounded also.  If it is no TMCC operations.  I assume this started conventional and modified for TMCC with the R2LC.  Directions are on Lionel website too.  G

You've located the only published wiring diagram in Supplement 44.

Besides the jumpers that George mentioned above, the other key is to make sure you reprogram the R2LC to a 34 code.

TRW

It should work, although admittedly the instructions aren't the best. If someone has tried to modify things, that'll obviously make things even more difficult to diagnose. 

One more thing to check out:

https://www.lionelsupport.com/...ents/72-2960-250.pdf

This is the generic upgrade instructions that also cover your locomotive. It's been revised a few years after the ones provided with your locomotive, so it's possible (although I haven't checked) there's some updated information contained therein.

Lastly, the 34 restore code for the R2LC will be the only one that will work when everything is properly installed.

TRW

Hello TRW

I have printed the upgrade instructions and did the 34 restore code many times

Got any other help to get this 20 year old upgrade working with TMCC commands

thank you

Railroad Jim

TRW

All we need is someone who has one of these steam locomotives that was upgraded and ask if they would look inside the engine and document the the boards and backplane  and any extra wires or jumpers

6-18084 4-6-2 Pacific #1334 there got to be a lot of them out there

Thank you 

Railroad Jim

This Lionel Steam locomotive was built 1998 . 6-18084 4-6-2 Pacific or 4-6-4 Hudson Road name NEW HAVEN

I hope there are other examples of this out there for comparison.

Thank You

Railroad Jim

I have the Lionel version, Southern and NYC.  I converted the SS/Conventional Lionel one to TMCC and RS no problem.  I converted the NYC to Cruise no problem.  There is no diagram on the 103 unit, but if you have a known good R2LC (check it with another engine), good programing switch, good antenna, then you need to trace the wires pin to pin for continuity.  Those lionel connectors are not the best.  You also need to trace mother board for opens.  At that point maybe swap the 103 unit.  It may have a bad component.  Engine should run without tender and that is how I would test at first.  G

GGG

Can you give me a inventory of the boards w/ rev level and the backplane p/n and rev level in the engine.

I have checked the R2LC radio board in another TMCC locomotive , works fine. Replaced the 103 e-unit no difference, works in conventional mode only stand alone. I replaced the backplane and did a complete wire list of both they match and no command mode. Installed the jumper as defined by Lionel no difference.

thanks for the reply

Railroad Jim

No I can't.  If you did all that I am not sure why it doesn't work.  You have 4 jumpers to move, are you sure you have them right?  Did you try engine alone?  G

GGG

Yes, I have moved and checked the jumpers and the engine will move responding to conventional commands.

thank you 

Railroad Jim

You do not have a second engine like this do you?  It is baffling.  There is only 4 parts to this.  R2LC, Mother Board, the 103 board, and the wiring.  Does the lockout switch (program switch) work in conventional?  Based on what you did, the only possible explanation is the 103 you have is a conventional only type.  But you said you replaced it??  Where did it come from?  What R2LC Code?  Mine where C07.  Lastly there is a 104E unit CMD ready.  Though all the documents show the 103E for these applications.  I would ask Lionel is there a code issue. G

GGG

The program/run switch has no effect ,It runs in conventional mode only ,no tender. The R2lC board is 04 the backplane is 691-PCB1-05F rev B. its replacement is rev B also. The E unit is 103/4E rev B, chip is E_cmd04 with heat sink . The replacement is 103/4E rev B , chip is E_cmd04 without heat sink .

thanks for all the help and reply

Railroad Jim

What do you mean the R2LC is 04??  C04?  It should be a C07 or 08.  It is not a R4LC is it?  Or a S04 code?  If so that is legacy and could be part of the problem.

As far a run program switch, according to instructions that should also be a lock out in conventional. If it has not effect, does it close and open?

Can you post some pictures.  G

G

The radio board is a R2LC-04,It is not a R4LC , also the program/run switch works correctly and electrically OK

Thank you for your help and the reply

Railroad Jim 

A C04 R2LC is really early. I'm 95% certain is was too early to come in the TMCC upgrade packages, so I'm wondering where you might have found it.

But besides that, do you have another R2LC with a later rev to try, something like C06, 7 or 8?

Try that, and be sure to restore that new R2LC with the 34 code.

TRW

TRW

The R2LC-04 board came with the locomotive unplugged. The vintage is 1998 locomotive . I don't know the dates of the TMCC upgrade . That is why I asked if anyone with the same engine would give me a list of the parts from a working engine.

Thank you for the help and the reply

Railroad Jim 

You said you swapped in a different R2LC?  What code was that?  As I stated R2LC C07 or 8.

Again this is not complex.  If R2LC is plugged into mother board and has an antenna connection, is in the run position, has power, and has been programmed with a code you should at least have head light and coupler control.  Does it? If not one or more of the above is bad.  If the tender is connected and the serial data to it is good you should have bell and whistle control.  If it starts up in conventional with sounds.  No serial data getting to the tender, or code is wrong in R2LC or Tender boards bad.

You need to start eliminating issues on the engine.  Otherwise you will never get this resolved.  And you need to consider a dual failure or parts.  G

GGG,

Thank you for the reply 

I have swapped out all the boards and backplane in the engine . I need the configuration of a working upgraded locomotive of the same vintage. I understand the logical diagnostic process. I have installed a Lionel undocumented jumper on the mother board .I believe there are more .

Railroad  Jim

Railroad Jim posted:

G

The radio board is a R2LC-04,It is not a R4LC , also the program/run switch works correctly and electrically OK

Thank you for your help and the reply

Railroad Jim 

You may be beyond this point, but did you try it with the switch in the opposite position. There were switches installed or wired backwards at the factory in some engines.

Dave

Dave

Thanks for the help and reply

Yes I have continuity checked the wiring and the switch. Program/run, switch closed program, switch open run

Jim

I found the problem the backplane - 05F was made wrong ... Follow the discussion at "Backplane Wiring Error"

Pin 1 on the backplane does not plug into Pin 1 on the R2LC  radio  TMCC upgrade board. It can never work.

Jim