Service Manual

MM-E 2072-09333-00
3-16
8
If you are following the instructions in
the RSS Owner's Guide, and the
oscillator or power output will not
adjust, the problem is in the LORD
module.
Replace or repair as necessary.
Proceed to step 8 of the checkout
From Checkout Step
Figure 3-8. MICOM-Z Troubleshooting Chart 7
3-5.5 Module Troubleshooting Procedures
WARNING
To prevent permanent damage to printed circuit boards, the
following troubleshooting procedures must be performed only by
qualified, authorized personnel, familiar with the theory of
operation of the Micom-Z circuits, and trained in the maintenance
of electronic circuits.
Refer to para. 3-2 for safety precautions and component and
module handling and repair procedures.
Use the following charts, in conjunction with the relevant schematic circuit diagrams given in
Appendix A, to troubleshoot a module down to the component level.
• Refer to Figure 3-9 for systematic troubleshooting of the receive path circuits.
• Refer to Figure 3-10 for systematic troubleshooting of the transmit path circuits.
Use Appendix B for logistic data on individual components.
NOTE
After replacing the LORD and/or the HI POWER module, it is
necessary to calibrate the RF transmit power using the RSS.
The required RF power values are as follows:
1. TUNE – 7W
2. LOW – 25W
3. MED – 60W
4. HIGH – 100W
5. MAX – 125W.