powersoft K2 Service Manual

47
K2 K3 | SERVICE MANUAL
INDEX
9. Firmware update procedure:
There is no need to update the amp’s rmware when replacing the power supply board.
The following will illustrate actions to be undertaken in case of amplier board or K front board replacement (see K front de-mounting
procedure at the end of this chapter if needed).
Due to the fact that the amplier model type is stored in the K front board and that this instructs the amplier control board, both boards
must run the same rmware version.
Should the system detect a different rmware version in the 2 boards at power on, the LCD display will show the message error “NO
LINK”.
To avoid this, we suggest updating to the latest release all K amps DSP you receive for service. To help solve this “NO LINK” error easily,
we can also ship a FIRMWARE UPDATE CARD.
K amps without DSP DO NOT NEED TO BE UPGRADED.
FIRMWARE UPDATE procedure for K Series
Main functional parts of K Series ampliers:
1. KFRONT = microcontroller that handles the front panel interface (4 pushbuttons + display)
2. KCNTRL = microcontroller that supervises the amplier and power supply if DSP is installed
3. KDSP = microcontroller that handles the DSP parameters
4. SHARC = signal processor
5. The FW update procedure updates the KFRONT, then the KDSP, then the KCNTRL, and nally the SHARC.
UPDATING AMPLIFIER (MAIN)
1. Turn the amplier off
2. Insert the rmware smartcard. The upper code is the FW revision number (e.g. 3.8.6-161). The bottom code is the KDSP and SHARC
revision number (e.g. 3.8.6-1406). Contacts on bottom.
3. Press the rst and second push-buttons on the left hand side of the front panel. Keep them pressed (with one hand)
4. With the other hand, turn the amplier on and wait 3-6 seconds.
5. Right after the fan test (full throttle blow), when the yellow LEDs on the panel begin blinking, you can release the buttons. The
KFRONT panel monitors the update process.
6. After about 4 minutes, a message box (if you are upgrading from a 2.0.x rmware release) appears, telling you that the current
settings are lost, and that you should verify the settings after the update. Please check your amplier settings after the update. Updating
from a 2.94.x or 3.x.x should however maintain your settings.
7. If a KDSP (i.e., an optional DSP board) is present, the KDSP update begins, its progress indicated by a progress bar. After about
4 minutes the update is complete. If a KDSP is NOT present, a START ERROR message is displayed, requiring a BACK push-button
conrmation.
8. The KCNTRL update begins, its progress mapped by a progress bar. After about 2 minutes the update is complete.
9. Finally, a message asking you if you want to update the SHARC DSP is displayed. By pressing OK the SHARC DSP is updated. The
update may take as long as 15 minutes and works only if the amplier is powered from the mains (NOT from a PowerHub!); therefore,
take care in assuring that the mains supply is not disconnected during the process.
10. Verify the update: go to Setup→Hardware Info, press more, the following should appear:
• KFRONT: X.Y.Z – B KCNTRL: X.Y.Z – B KDSP: X.Y.Z – S
• WHERE: X.Y.Z is rmware version, B is the build number (meaningless) and S is the SHARC rmware version.
CAUTION:
If the update process terminates before completion, repeat the process starting from point 1 since two
different firmware versions could be installed on the amplifier.
This could cause the amplifier to malfunction.
Always check that the update was successfully completed as explained on point 10.

powersoft K2 Specifications

General

Brand	powersoft
Model	K2
Category	Amplifier
Language	English