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Summary of Contents for powersoft K2 Series
- Page 1 K2 – K3 Series Version 1.4 July 2013 powersoft_k2k3_service_man_v1.4.docx © 2013 Powersoft...
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Page 2: Table Of Contents
Index Opening the amplifier cover Discharging the amp capacitors 3 – 4 Removing the power supply board 4 – 8 Removing the amplifier output board 9 –12 Removing the fan Removing the display 13 –14 Instruments and tools for testing Firmware update procedure 14 –15 Removing the control board (k-cntrl) -
Page 3: Opening The Amplifier Cover
1. OPENING THE AMPLIFIER COVER Disconnect the amplifier from the mains. If the amplifier has been connected to the mains in the last few minutes, please proceed with attention as the internal capacitors bank could be charged and harmful! Remove the side support steel bars, unscrewing the four bigger screws with a Phillips PH1 screwdriver. -
Page 4: Removing The Power Supply Board
Fastons between power supply board, output amplifier board and fan power cables to be disconnected Following this, unscrew the fans power cables close to the previous faston. Negative to this connector Positive to this connector at first and then to this other one Detail of connectors Once the amplifier is open and its power supply fully discharged, it is possible to start removing the single... -
Page 5: Removing The Power Supply Board
Removed flat cable Disconnect the amplifier power switch cable removing the faston behind it: Overview of the 7 screws (1-7) and of the brass stand-off (8) to unscrew for removing the power supply board Amplifier power switch cable to be removed Detail of screws number 1-2 Faston of the amplifier power switch cable removed It is now possible to remove the power supply board by... -
Page 6: Detail Of Screw Number
Detail of brass stand-off (screw number 8) Detail of screw number 5 Once all the 8 screws have been removed, remove the power supply board heat sink screws with an M3 hexagonal key: Detail of screw number 6 Detail of screw number 7 Heat sink screws to be removed K2 –... - Page 7 Mains connector screws removed Proceed in unscrewing the nut that holds the earth ground cable behind the mains connector: Heat sink screws removed Now remove the mains plug holder by pressing on its sides; then remove the mains socket screws: Earth ground nut to be removed Now remove the rear panel: Rear panel screws to be removed...
- Page 8 The power supply board will not be freed until the fan is Now it is finally possible to remove the complete power not removed from the amplifier chassis. Remove the fan supply board from the amplifier chassis: power cable and the fan screws: Fan power cable holders to be removed Lift and pull the power supply board to remove it from the amplifier chassis...
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Page 9: Removing The Amplifier Output Board
4. REMOVING THE AMPLIFIER OUTPUT Now remove the two flat cables between the power BOARD supply board and the amplifier output board: Before removing the amplifier output board, please proceed in discharging the power supply capacitors as explained in chapter 2. Start from unscrewing the rear panel connectors removing the mains connector screws and plug holder as in the images below:... - Page 10 Screw 4 to be removed Screw 5 and 6 to be removed Nuts unscrewed and removed Now remove the amplifier output board by unscrewing the 7 screws marked in the overview image below and in the following images: Amplifier output board overview Screw 7 to be removed Once all the 7 screws have been removed, unplug the two flat cables that connect the optional KAESOP board...
- Page 11 Pull back the amplifier output board to be able to unplug the two flat cables of the control board on the other hand masked by the chassis: Control board flat cables to unplug KAESOP flat cable to unplug Control board flat cables unplugged Now it is finally possible to remove the amplifier output board from the amplifier chassis: KAESOP flat cables unplugged...
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Page 12: Removing The Fan
Remove the fan power cable holders: Amplifier output board out of the amplifier chassis 5. REMOVING THE FAN Fan power cable holders to be removed Before starting to remove the fan please proceed in discharging the power supply as explained in chapter 2. Begin the fan disassembly by unscrewing the fans power cables. -
Page 13: Removing The Display
6. REMOVING THE DISPLAY (K-FRONT) Before removing the display, discharge the power supply capacitors as explained in chapter 2. Remove the faston that connects the amplifier power switch: Screw for removing right ear Remove the left and right protection plates: Screws for removing the protection plates The front panel is now free from the amplifier chassis. -
Page 14: Instruments And Tools For Testing
K amps DSP you receive for service. To help solve this “NO LINK” error easily, we can also ship a Display removed from front panel FIRMWARE UPDATE CARD (Powersoft code PC000112). K amps without DSP DO NOT NEED TO BE 7. INSTRUMENTS AND TOOLS FOR TESTING UPGRADED. -
Page 15: Removing The Control Board (K-Cntrl)
7. If a KDSP (i.e., an optional DSP board) is present, the Menu → setting → amplifier setting → Max output KDSP update begins, its progress indicated by a voltage → setting the value with the two ± button. progress bar. After about 4 minutes the update is complete. - Page 16 Positive power bus Ch2 + Negative power bus Ch2 + Negative power bus Ch1 + 192 KHz clock not present K2 – K3 Service Manual...
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Page 17: Mechanical Parts
11. MECHANICAL PARTS K2 – K3 Service Manual... - Page 18 ME000214 BLACK PLATE ME000284 ALUMINIUM HANDLE ME000220 LEFT BLUE FRONT GRID RIGHT BLUE FRONT GRID ME000219 IN000010 SWITCH MAINS ME000215 ALUMINIUM FRONT TA000005 LEXAN K-FRONT ME000359 COVER ME000370 REAR PANEL SILSKREENED ME000360 LATERAL INOX PLATE ME000358 HALF REAR PANEL ME000357 CHASSIS ME000210 LEFT BLACK PLATE...
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Page 19: K2-K3 Spare Parts List
12. K2-K3 SPARE PARTS LIST KALIN Part Number Description PCB position SMD00611 K/LGT/ALIN/12+TEST+HSINK RES00120 R52, R53 C50 C51 C52 C53 C54 C55 C56 C57 C58 CA000200 ELET.1000UF 200V 25X35 SNAP IN 85° P10 C59 C60 C61 C62 C63 C64 C65 C66 C67 C68 C69 C71 C72 DI000070 IRC 30EPH06... - Page 20 KAMIN SMD00565 K/LGT/AMIN/12+DRIVER+CNTRL+COLL+HSINK C1001 C1002 C1003 C1004 C1005 EL.330UF200V 18X35.5 105GR LESR 7,5mm Lead spacing C1006 C2001 C2002 C2003 C2004 CA000257 3,32A Ripple 10.000hrs C2005 C2006 DI000073 IXS DSEC29-06AC D1005 D1006 D2005 D2006 DIS00037 FFB20UP20S 20A 200V D2 PACK D1003 D1004 D2003 D2004 FU000026 Fuse 10A 250VDc (5x20mm) Time Delay...
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