Olivetti d-Copia 3500MF Service Manual page 442

19. Fuser thermostat 1 (FTS1).................... Prevents overheating of the heat roller.
20. Fuser thermostat 2 (FTS2).................... Prevents overheating of the heat roller.
21. Cassette heater (CH) ............................ Dehumidifies the cassette section (option).
22. Hard disk (HDD).................................... Storages the image data and information of job accounting mode.
*1: 35 ppm model only.
*2: 45 ppm model /55 ppm model only.
Service Manual 2-2-10
2LL/2LJ/2LH
Y113350-5