Siemens PC 670 - Manual (Page 65)

Maintaining and Extending the Computing Unit Release 04/02
4-5 Panel PC 670 Computing Unit, Equipment Manual
4.1.3 Functional Units Visible After Opening the Device
View
The function units become visible after removing the top cover of the unit and
removing the hard disk module.
Power supply unit
Processor Wiring backplane Memory expansion module
Disk drive or LS 240
Fan
Figure 4-2 Computing unit open