harman/kardon TECH TIPS
Troubleshooting tips and solutions to common service problems
For models: DVD22 TIP# HKTT2005-01
Complaint: Will Not Read Disc; Other Functions May Be Disabled
See h/k service bulletins HK2004-03 and HK2005-02, as the issues covered there involve similar
symptoms.
Probable Cause:
EC19 and EC20 (1000µf 16v capacitors) may be defective in the power supply. This can be checked by
measuring the +3.3v and +5v voltages that are associated with EC19, 20 to see if they are low (more
than 0.1v low).
The SPMS output voltages are marked on the PCB adjacent to the large 13 pin header. While there is
only one 3.3v pin, there are several +5v pins, and care should be taken to measure the correct one(s),
which are either two +5v pins approximately in the center of the header.
The h/k part # of EC19, EC20 is 647-UVZ1C102MPH.
Ordinarily, the entire power supply module in the DVD22 (h/k part# 300-A001254C-0001) can be
replaced in the warranty period without repair to component level.
DVD22 harman/kardon
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