8. Electronic System
8-14
Technical Manual for sunrise RC, TW, TS, TC, BC, 6F No. T 137 302 Rev No. 1.1
2004-10
8.12 Power Supply board
The power supply unit supplies the + 24 Volt voltage that is required by the
instrument.
Supply voltage for CPU Board ( + 24V)
Supply voltage for the power Board (+ 24V)
Fuse
Connector to
Main power
socket
Connector to
CPU board and
power board
8.13 Replacing the Power Supply
The power supply unit is replaced using the following procedure:
1. Switch the instrument OFF.
2. Remove the main power cable from the socket.
3. Remove the instrument front cover.
4. Remove the Epack top cover.
5. Remove the Fan.
6. Remove the Epack right side cover.
7. Disconnect the earth cable of the power supply from the cover.
8. Disconnect the connector to the main power socket.
9. Disconnect the connector to the power board and the CPU board.
10. Remove the power board.
11. Carefully remove the Power supply.
12. Replace the Power supply.
13. Replace all parts in reverse order.
