03-MAR-2024
Let’s put her up onto the table for a bit of clean-up and inspection.
In the front section there’s the Power Supply and a 3.45 V regulator module just above it. Further back is the System Board with memory on riser cards and the 200 MHz DECchip 21064 processor under the heat sink.
There is no cooler atop the heat sink. Three 119-mm Nidec fans, sat on soft vibration mounts at the bottom of the chassis, generate enough airflow through the system, as long as the side panels are in place.
| Fan series | Nidec BETA V™ TA450DC |
| Model | B33534-65A |
| Size | 119×38 mm |
| Nominal voltage | 24 VDC, operating range 12–28 V |
| Current | 0.45 A |
| Power | 10.8 W |
| Speed | 4050 rpm |
| Air flow | 130 cfm |
| Sound level | 53.5 dBA |
| DEC part no. – fan assembly | 12-23609-12 |
The mounting pads are covered in grime on the bottom side! They will be cleaned up in due course.
The frame is resting on top of the pedestal on four rubber mounts, which dampen noise and vibration.
