4-8 IDU MOUNTING
NWD-107460-02E Installation
4.3 Fuse Replacement
When the power is supplied to the power supply connector but the IDU can not be
powered, check the conduction of fuse in the IDU.
1. Disconnect power supply cable from power supply connector.
Fig. 4-1 IDU Front View
2. Disconnect cables connected to the IDU in the following order.
2-1. Disconnect IF cable from IF IN/OUT connector.
The adapter is reused.
2-2. Disconnect ground cable from the ground terminal.
3. Loosen fuse cap on the IDU.
4. Remove the fuse from the fuse holder.
5. Check conduction of the broken fuse using tester.
6. Check conduction of the reserved fuse using tester.
7. Replace the broken fuse with reserved one.
8. Set the replaced fuse to the fuse holder.
9. Fasten the cap of the fuse on the IDU.
10. Connect power supply cable to power supply connector.
11. Check that the power is on.
This step is the end of the procedure.
Power supply
connector
Fuse cap
Submission Prohibited
NEC Internal Use Only
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