Maintenance and troubleshooting, 0 periodic maintenance – Comtech EF Data QAM256 User Manual
Page 40
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QAM256 Digital Video Modulator and Upconverter
Maintenance and Troubleshooting
TM077 – Rev. 4.0
6-1
Maintenance and Troubleshooting
6
6.0 Periodic Maintenance
The QAM256 modulator requires no periodic field maintenance procedures. Should a unit be
suspected of a defect in field operations after all interface signals are verified, the correct
procedure is to replace the unit with another known working QAM256. If this does not cure the
problem, wiring or power should be suspect.
There is no external fuse on the QAM256. The fuse is located on the
power supply assembly inside the case, and replacement is not
intended in the field.
See also other documents in the category Comtech EF Data Equipment:
- CDD-880 (124 pages)
- CDM-800 (130 pages)
- ODMR-840 (184 pages)
- CDM-750 (302 pages)
- CDM-840 (244 pages)
- SLM-5650A (420 pages)
- CTOG-250 (236 pages)
- CDM-700 (256 pages)
- CDM-760 (416 pages)
- CDM-710G (246 pages)
- CDM-600/600L (278 pages)
- CDMR-570L (512 pages)
- CDM-625 (684 pages)
- CDM-625A (756 pages)
- CDD-564A (240 pages)
- CDD-564L (254 pages)
- CLO-10 (134 pages)
- MCED-100 (96 pages)
- CDMR-570AL (618 pages)
- CDM-600 LDPC (2 pages)
- BUC Power Supply Ground Cable (2 pages)
- MPP70 Hardware Kit for CDM-570L (4 pages)
- MPP50 Hardware Kit for CDM-570L (4 pages)
- CDM-625 DC-AC Conversion (4 pages)
- CDM-625 DC-AC Conversion with IP Packet Processor (4 pages)
- DMDVR20 LBST Rev 1.1 (117 pages)
- DMD-2050 (342 pages)
- DMD2050E (212 pages)
- DMD1050 (188 pages)
- OM20 (220 pages)
- DD240XR Rev Е (121 pages)
- MM200 ASI Field (5 pages)
- DM240-DVB (196 pages)
- MM200 (192 pages)
- CRS-150 (78 pages)
- CRS-280L (64 pages)
- CRS-170A (172 pages)
- CRS-180 (136 pages)
- SMS-301 (124 pages)
- CiM-25/8000 (186 pages)
- CiM-25 (26 pages)
- CRS-500 (218 pages)
- CRS-311 (196 pages)
- CIC-20 LVDS to HSSI (26 pages)