Soemtron 224 Dismantling for Restoration
All images ©soemtron.org 2007-

Internally our machine is very dirty and seems to have been stored for many years in an upright position judging by the way all the detritus has accumulated on and inside the machine, however we think that when it was in use it was on top of some other machine or vent, which would seem to have forced dirty air into the 224. Our Soemtron 224 has been dropped at some time in the past, the main card cage is bent and one of the reservoir capacitors has a couple of bad dents from the motor fan which have actually punctured the capacitor case, this will probably need to be replaced. Connections to the digit detector photocell on the printer mechanism are also broken from continued flexing of the wiring.

In picture (#34) you will see a label "VEB SüdThür Fleischkombinat - Kombinatsleitung", we believe this indicates that this machine was used in some form of meat processing industry, and would explain to some extent the very dirty condition of the machine.

The Soemtron 224 was manufactured by V.E.B. Büromaschinenwerk Sömmerda, it is believed that there are only three 224's left in the world.spaceClick an image for a larger version.

This page has Photos of the restoration progress.

Our Soemtron 224, click for a larger image
1. Our Soemtron 224
Rear, click for a larger image
2. Rear
Bottom, click for a larger image
3. Bottom
Covers removed, front, click for a larger image
4. Inside, front
Printer mechanisim side, click for a larger image
5. Printer mechanism
Printer mechanisim, click for a larger image
6. Printer mechanism
Keyboard side, click for a larger image
7. Keyboard side
Power supply, click for a larger image
8. Power supply
Printer mechanisim, click for a larger image
9. Printer mechanism
Printer mechanisim, click for a larger image
10. Printer mechanism
Printer mechanisim, click for a larger image
11. Printer mechanism
Printer mechanisim, click for a larger image
12. Printer mechanism
Print wheels, click for a larger image
13. Print wheels
Digit selection solenoids, click for a larger image
14. Digit selection
Paper advance mechanisim, click for a larger image
15. Paper advance mech
Printer removed, click for a larger image
16. Printer removed
Keyboard removed, click for a larger image
17. Keyboard removed
Keyboard assembly, click for a larger image
18. Keyboard assembly
Keyboard bottom, click for a larger image
19. Keyboard bottom
Digit photo amplifier, click for a larger image
20. Digit photo amp
Bent connectors, click for a larger image
21. Bent connectors
Card cage, click for a larger image
22. Card cage
Fan housing, click for a larger image
23. Fan housing
Card cage damage, click for a larger image
24. Card cage damage
Card cage removed, click for a larger image
25. Card cage removed
Power supply & Drivers, click for a larger image
26. PSU & Drivers
Drivers, click for a larger image
27. Drivers
Power supply, click for a larger image
28. Power supply
Damaged PSU capacitor, click for a larger image
29. Damaged capacitor
Thermistor position, click for a larger image
30. Thermistor position
Power supply, click for a larger image
31. Power supply
Power supply, click for a larger image
32. Power supply
Transformer values, click for a larger image
33. Transformer values
Baseplate, click for a larger image
34. Baseplate
VEB SüdThür Fleischkombinat - Kombinatsleitung, click for a larger image
35. Fleischkombinat
Left side plate, drive clutch, mains switch /indicator, click for a larger image
36. Drive clutch release
Rear print wheel stop assembly, click for a larger image
37. Rear print wheel stop assembly
Rear print wheel stop assembly, click for a larger image
38. Rear print wheel stop assembly
Front print wheel stop assembly, click for a larger image
39. Front print wheel stop assembly
Front print wheel stop assembly, click for a larger image
40. Front print wheel stop assembly
Print roller assembly, click for a larger image
41. Print roller assembly
Print roller assembly, click for a larger image
42. Print roller assembly
Print roller assembly, click for a larger image
43. Print roller assembly
Motor assembly, click for a larger image
44. Motor assembly
Mains wiring harness, click for a larger image
45. Mains wiring harness
Control wiring harness, click for a larger image
46. Control wiring harness