D135-10-880C - Maintenance
Page 92
Figure 42 Assembly fuses
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 (+/- 15 V / 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.
No 9 F 3 on MB
Fuse rating: T 0,8A
Supply voltage 24 V for fans and motor relay.
No. 10 F 4 on MD
Fuse rating: T 8A
Protection for the fore vacuum pump.
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