Harman Kardon SIGNATURE 2.0, Service Manual

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The following code changes were made from ver 2.0 to create 2.1 of the
Signature 2.0.
1. When a mode other than Stereo is selected, and the system is muted, adjusting the
volume will now cause the system to unmute correctly.
2. VOL text is no longer left hanging on the VFD when direct tuner frequency access is
used.
3. Mute timing during power on/off has been adjusted to fit new output muting circuitry.
4. Dolby Digital Mono is no longer selectable from the front panel buttons when an
analog source is selected.
5. VFD no longer flashes source/volume info when items changed from the tuner menu.
6. When a preset is selected from the tuner menu, the items are enabled/disabled
correctly based on the band of the selected preset.
7. Speaker trim values have been changed from +10dB –10dB to +10dB –20dB to
compensate for some highly efficient amp/speaker configurations.
8. OSD, and Volume chip communications sped up.
9. Switching between 2 inputs in stereo mode, one analog and the other digital now
works correctly.
10. Removed long delay in power down sequence. This was necessary before the
hardware change to reduce the power off thumping.
11. Enabled Seek Up and Seek Dwn buttons in tuner menu for frequency selection.
12. Updated RDS types to 2.0 spec
13. Removed level boost when switching into 6-ch direct mode
14. Corrected speaker setup problem when switching from Stereo mode to 6-ch direct.
15. US/EURO setup now enabled only from front panel button setup.
The following code changes were made from ver 2.1 to create 2.2 of the Signature
2.0.
1. Tuning in Long Wave in Euro setup is now 1kHz increments (as opposed to 9kHz
increments)
2. When exiting 6-Ch direct, audio mode is now left alone, i.e., if you were in ProLogic
mode when 6-ch direct input was selected, you’re still in ProLogic mode when an
analog or digital input is selected. In version 2.0 and 2.1, the mode was left in the 6-
Ch direct.
3. In the Speaker Setup menu, when switching selected speakers from on to off, or vice
versa, those speaker outputs are immediately muted.
4. OSD timeout value now has a value between 1 and 15 seconds. Previous versions
would allow a value of 00which would never timeout.
5. Bug fixed which, under certain conditions, when selecting a source, would not select
the correct input level value.
The following code changes were made from ver 2.2 to create 2.3 of the Signature
2.0.
1. Fixed problem introduced in version 2.2, which caused the subwoofer to be muted
when Stereo mode was selected.
2. Fixed the “twitchy” button problem when cycling through the sources/modes from the
menuing system.
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Signature 2.0 Processor/Tuner harman/kardon