Harrington Signal Tracker T8000 - Operation Manual - Manual (Page 16)

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HSI #780-0923 FireSpy Tracker Operation Manual
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Perform maintenance of any other system devices in accordance with the manufacturers' instructions.
3.2.1 Fuse replacement
WARNING To reduce the risk of electrical shock, make sure that all power has been
turned off or disconnected prior to disconnecting wiring or removing modules.
NOTE On any system that includes remote signaling, the local fire department
and/or monitoring agency should be informed before performing test or
maintenance functions.
If the system does not have power despite having sufficient line input voltage and battery voltage, a fuse
may need to be replaced. To check and replace the fuses, perform the following steps.
For T2000 and T8000:
1. Disconnect all power.
2. Disconnect wiring to the chassis assembly (MBC or MBCLC).
3. Remove the four nuts that secure the chassis assembly to the enclosure.
4. Remove the chassis assembly and turn it over.
5. Check the fuse on the T8000-PC board at location F1. If the fuse needs replacement, use a
standard automotive miniature fuse rated 15A (Littelfuse 997015 or equivalent).
6. Check the fuse on the RL9801 power supply at location F1. If the fuse needs replacement, use a
standard 5x20mm cartridge fuse rated T6.3AL250V (Littelfuse 021806.3 or equivalent).
For T1000:
1. Disconnect all power.
2. Check the fuse on the MB main board at location F1. If the fuse needs replacement, use a
standard automotive miniature fuse rated 15A (Littelfuse 99707.5 or equivalent).
3. Disconnect wiring to the chassis assembly (MB).
4. Remove the four nuts that secure the chassis assembly to the enclosure.
5. Remove the chassis assembly and turn it over.
6. Remove the power supply and the power supply’s metal cover.
7. Check the fuse on the LS100 power supply at location F1. If the fuse needs replacement, use a
standard 5x20mm cartridge fuse rated F4AH250V (Littelfuse 0216.004XEP or equivalent).