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Hello forum members!

Yesterday I acquired a new machine: RFT F2000A. Originally it was in service at the Hungarian Railways but was already decommissioned when I found it. Photos of the device are below.
Conditions:

• 2 keys are missing, and 2 more have weak springs, not pushing them back to normal position. Is it possible to fix the weak keys?

• Somewhat loud high-frequency noise coming from the back of the device - similar to the one you hear near switching power supplies. Needs further investigation - opening the individual modules

• Plastic cover for the punch tape unit is broken, and the punch tape holder wheel is bent

• The most interesting one: the device is configured to communicate in the Hungarian language! When I powered it up it printed in Hungarian the following text: Data loss. Change batteries

I found the battery compartment and will change them today. Somewhere I read that the machine identifier was stored in the EPROM, so hopefully, that is still intact. But besides this, I still want to clean the device properly. For that, I hope you have some kind of tips or manuals. Any feedback is welcome.

Some serious time was put into this device The inspector observes the new asset

A good inspector is always very important!

Tastatur TA_08 . Changing the springs
. switching power supplies; Cold glue to the coils
. Plastic cover for the punch tape unit is broken; 3D printing spare part
. device is configured to communicate in the Hungarian language; correct.

Can send Data from "Varaianten-ROM" - all plugged ROM ?
And photo from "Typenschild"?

Her configuration tool to build new variant: F2000 Variant and Fonts

EPROM M = FKG
EPROM N = Systemkonfiguration
EPROM O = Varianten-EPROM

EPROM P/R Zeichensatz
Ab Geräte Nr.: 220 000 gab es Änderungen im Schalt-Netzteil.

Thanks SAS for the hints. Now after changing the battery, the device acts like this:
Does not matter if I connect it to the i-Telex, or not.
Serial number is: 320 644
Type label photo: About EPROMs: yes, but only later - I have to obtain an EPROM reader/deleter.
Could you please share the manual, its ok if it's in german only - I can use google translate.

Actually, now it's worse - it does not even move the print head, but 3 LEDs are blinking

Mojen,

erste Blinkende LED = keine Linie
zweite Blinkende LED = kein Pappier
dritte Blinkende LED = kein Lochstreifenpappier

und Haube auf mag er auch nicht zwingend, aber dafür gibt es ja den Schalter der sich per Hand schließen läßt....