This document is just what I was looking for, it´s very useful, it contains adjustment procedures for the final stage of the power amp and also
has a complete wiring diagram and description of the main semiconductors used in the design.
Dear Sirs,
Thank you for the fast support, the manual does provide all necessary information to repair the radio. All schematics are in a good quality for reading.
The manual fits 100% to my requirements as a technican.
Kind regards Thomas
Text excerpt from page 35 (click to view)
Troubleshooting
6-2 Checkpoints by Error Mode
6-2-1 No Power
Symptom - The LEDs on the front panel do not work when connecting the power cord. - The SMPS relay does not work when connecting the power cord. - The power of the unit seems to be out of order.
The SMPS relay or the LEDs on the front panel do not work when connecting the power cord if the cables are improperly connected or the Main Board or SMPS is out of order. In this case, check the following: - Check the internal cable connection status inside the unit. Major Checklist - Check the fuses of each part. - Check the output voltage of SMPS. - Replace the Main Board.
Troubleshooting Procedures
Are the AC IN socket connector and the Main SMPS CN800 connected? Yes
No
The AC IN socket connector and the Main SMPS CN800 connected
Is the Fuse (F801S) of the Main SMPS Power Input Part blown? Yes
No
Replace Fuse (F801S)
Main SMPS CN804-1 Pin 3 : STB 5V Pin 8 PS-ON : Check to see if it is 0V Yes
