Maintenance
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GA10218_002_A7 - 9/2015 - © Oerlikon Leybold Vacuum
6. After having exchanged the fuse (s) press the lid of the mains socket firmly back
on.
7. Insert the mains cord into the PHOENIX L300i and switch the instrument on.
Beside these mains fuses several internal circuits are fused separately. These fuses
are listed in the following table. See also
In order to exchange these fuses you must proceed as follows:
1. Switch the PHOENIX L300i off
2. Pull the mains cord on the PHOENIX L300i
3. Remove the cover for the mechanical and electronics section according to
Chapter.
4. Exchange fuses
As can be seen in
, fuses 1, 2, 3 and 4 are located on the MSV board, fuses
5 and 6 on the I/O board and the fuses 7, 8, 9 and 10 are located on the wiring
backplane under the MSV board.
5. Finally re-install the covers for the electronics and mechanical section in the
reverse order.
No 1 F1 on MSV
Fuse rating: T 2A
24 V system voltage of the mass spectrometer supply.
Loosen control panel (two Phillips screws). Loosen the
panel which holds the MSV board in place (two Phillips
screws).
Pull the MSV board (the board at the back) up to the
top. For this insert a screwdriver into the two recesses
at the sides (top) one after the other and lever the MSV
board out by resting the screwdriver on the STE
board.
No 2 F2 on MSV
Not in use.
No 3 F3 on MSV
Fuse rating: T 1A
For generating 24 V for DCDC-converter
(+/- 15V / 5 V)
No 4 F4 on MSV
Fuse rating: M 0,032A
Fuse for the anode voltage
No 5 F1 on I/O board
Fuse rating: T 0,8A
Protects the 24 V supply carried by the option socket
No 6 F2 on I/O board
Fuse rating: T 0,2A
Protects the selectable 24 V for RS 232 Interface.
No 7 F 1 on MB
Fuse rating: T 0,8A
Supply voltage for the remote control
No 8 F 2 on MB
Fuse rating: T 4A
Supply voltage 24 V for I/O board.
