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1、Service Manual Keep this manual for future reference 2016 Powersoft powersoft_DigiMod500.1000.1500.2000HV.1000NPS_servman_en_v2.3 Digimod DigiMod 500 DigiMod 1000 DigiMod 1500 DigiMod 2000HV DigiMod 1000 NPS RadioFans.CN 收音机爱 好者资料库 Intentionally left blank RadioFans.CN 收音机爱 好者资料库 CAUTION RISK OF ELE
2、CTRICK SHOCK DO NOT OPEN WE RECOMMEND THAT ALL SERVICE OPERATIONS ARE CARRIED OUT BY A TECHNICIAN IN THE MANNER DESCRIBED IN THIS GUIDE. IF NOT EXPLICITLY STATED OTHERWISE, DISCONNECT THE AMPLIFIER FROM THE MAINS BEFORE OPERATING THE AMPLIFIER. WARNING! INTERNAL CAPACITORS BANK COULD BE CHARGED AND
3、HARMFUL: TAKE CARE OF COMPLETELY DISCHARGE INTERNAL CAPACITORS BANK BEFORE HANDLING THE DEVICE This technical document aims to be a support guide in repairing and low-voltage testing the DigiMod 500, 1000, 1500, 2000HV, 1000NPS Modules. The troubleshooting approach will help you characterize the kin
4、d of fault you incur. A recovery method and the related assembly outline detail is thoroughly explained for the most common faults. The components to be replaced are clearly shown to help their identification. At the end of this guide you can find a detailed list with the description and the respect
5、ive Powersoft internal reference code of the spare parts. Always use an anti-static wrist band while servicing the amplifier. DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL Tools: Data are subject to change without notice. For the latest release please refer to the online version available on
6、 www.powersoft-. INDEX 1.Testing Components Kit4 2.Opening the Modules Cover5 3.Discharging the Modules Capacitors Bank6 4.Assembly Outline6 5.Troubleshooting7 Checking the Output Mosfets7 Checking the R10 NTC8 Checking the RV1 Varistor8 Checking the F1 Fuse8 Checking the Fan and Fans Driver8 6.Main
7、 PCB Disassembly9 DigiMod 500 | 1000 | 1500 | 2000HV9 DigiMod 1000NPS10 7.DC Voltage Testing11 8.Output Current Offset Calibration Procedure19 9.SilPad Replacement Procedure20 10.FW Installation Procedure21 11.Repair Kit List22 12.Fake/Unauthorized Copies23 Index: Phillips PH 0 screwdriver Phillips
8、PH 1 screwdriver M3 hexagonal wrench M5 socket wrench Multimeter Soldering station Mains insulation transformer Function Generator RadioFans.CN 收音机爱 好者资料库 INDEX 4 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL 4 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL INDEX 1. Testing Components
9、 Kit: Lamp (min.40W/230V, best 60W/230V) for discharging the amplifiers capacitors bank PSU AUX Voltage Cable DigiMod Mains DC CableDigiMod AMP AUX Voltage Cable DigiMod Mains Cable 5 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL INDEX 2. Opening the Modules cover: Remove the Control Board b
10、y unscrewing the two steel spacers with a M5 socketed wrench and un-clipping the retainers highlighted in (Fig. 1) (Fig. 1) Locate and unscrew all 6 Phillips Head Screws holding the modules cover, 3 per side. (Fig. 2,3) (Fig. 2) (Fig. 3) Carefully lift the cover, locate and unplug the fans power cab
11、le. (Fig. 4) (Fig. 4) 6 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL INDEX 4. Assembly Outline: 3. Discharging the Capacitors Bank: Connect one side of a 60W light bulb to the pins marked (+) and the other side to a ground point, repeat on the other side of the CN13 connector. AMP SECTION P
12、S SECTION (Fig. 5) Remove Jumper to insert external circuit Remove Jumper to insert external circuit Remove Jumper to enable DSP Remove Jumper to enable DSP 7 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL INDEX 5. Troubleshooting: Checking the Output Mosfets: Check for any short in the Outpu
13、t Mosfets by probing with a multimeter set to Ohm between the points highlighted in (Fig. 6). (Fig. 6) DigiMod 500 | 1000 | 1500 | 2000HV DigiMod 1000NPS Check for any short in the Output Mosfets by probing with a multimeter set to Ohm between the points highlighted in (Fig. 7). (Fig. 7) ModelKit Nu
14、mber Description DigiMod 500KT000819.R KIT DM500 AMP 1CH DigiMod 1000KT000821.R KIT DM1000 AMP 1CH DigiMod 1000NPSKT000822.R KIT DM1000NPS AMP 1CH DigiMod 1500KT000824.R KIT DM1500 AMP 1CH DigiMod 2000KT000827.R KIT DM2000 AMP 1CH In case of any faults in the aforementioned components, please refer
15、to the table below when ordering the Repair Kit. 8 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL INDEX Checking the R10 NTC: With the Multimeter set to Ohm, check for continuity in the R10 NTC, by probing the points highlighted in (Fig. 8). Checking the RV1 Varistor: (Fig. 8) Flip the module
16、 upside down. With the Multimeter set to Ohm, check for continuity in the RV1 Varistor, by probing the points highlighted in (Fig. 9). (Fig. 9) Checking the F1 Fuse: With the Multimeter set to Ohm, check for continuity in the F1 Fuse, by probing the points highlighted in (Fig. 10). (Fig. 10) ModelKi
17、t NumberDescription DigiMod 500KT000818.RKIT DM500 PSU DigiMod 1000KT000820.RKIT DM1000 PSU DigiMod 1500KT000823.RKIT DM1500 PSU DigiMod 2000KT000827.RKIT DM2000 PSU In case of any faults in the aforementioned components, please refer to the table below when ordering the Repair Kit. Checking the Fan
18、 and Fans Driver (DigiMod1500, 2000HV only) During the modules booting procedure, the fan spins at full speed for a brief period of time. A first indication of any fault in the fan or the fans driver is the absence of the aforementioned passage. In case of any fault, remove the fan from the casing a
19、nd test it by supplying it with +24 Vdc. If the fan begins to spin, the fault is in the fans driver, by contrast, if the fan does not begin to spin, the fault coulbe be in both the fan and its driver. Take care in mounting the fan with the label facing downwards, and use the original screws, longer
20、ones could damage the capacitors bank. Please refer to the table below if there is a fault in the Fan or the Fans driver. ModelKit NumberDescription DigiMod 1500KT000825.RKIT DM1500 FAN DigiMod 2000KT000828.RKIT DM2000 FAN 9 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL INDEX 6. Main PCB Dis
21、assembly: DigiMod 500 | 1000 | 1500 | 2000HV Using a M5 Socketed Wrench, and a regular M5 Wrench, remove all 9 screws and nuts highlighted in the pictures below. Proceed by removing the retainer spring holding the Zobel resistor in place. The image below portrays all 8 screws needed to be removed in
22、 order to separate the PCB from its casing. It is now possible to carefully lift the main PCB out of its casing. 10 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL INDEX DigiMod 1000NPS Using a M5 Socketed Wrench, and a regular M5 Wrench, remove all 4 screws and nuts highlighted in the picture
23、s below. Proceed by removing the retainer spring holding the Zobel resistor in place. The image below portrays all 7 screws needed to be removed in order to separate the PCB from its casing. It is now possible to carefully lift the main PCB out of its casing. 11 DigiMod 500 1000 1500 2000HV 1000NPS
24、| SERVICE MANUAL INDEX 7. DC Voltage Testing: Connect a DC Power Supply to the CN4 connector by means of the PSU AUX VOLTAGE CABLE. (Fig. 11) Slowly increase the voltage to +18V, and verify the consumption, it should be as stated in the following table. ModelConsumption DigiMod 50020 mA 10% DigiMod
25、100020 mA 10% DigiMod 150020 mA 10% DigiMod 2000HV20 mA 10% 18Vdc 20mA (Fig. 11) ModelKit NumberDescription DigiMod 500KT000818.RKIT DM500 PSU DigiMod 1000KT000820.RKIT DM1000 PSU DigiMod 1500KT000823.RKIT DM1500 PSU DigiMod 2000KT000827.RKIT DM2000 PSU In case of any faults in the aforementioned co
26、mponents, please refer to the table below when ordering the Repair Kit. 12 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL INDEX 18Vdc 20mA By means of the PSU AUX VOLTAGE CABLE, supply +18Vdc to the module through the CN4 connector. With an oscilloscope, check if the waveforms on the IGBTs pi
27、ns are as portrayed in the picture below. 13 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL INDEX Connect a DC Power supply to the CN4 connector by means of the PSU AUX VOLTAGE CABLE, and supply +18 Vdc. By means of the DIGIMOD AMP AUX VOLTAGE CABLE, connect a second power supply and set the
28、output voltage to 15Vdc, and check the absorption: it should be as portrayed in the table below. Model+15V Consumption-15V Consumption DigiMod 500230 mA 10%70 mA 10% DigiMod 1000300 mA 10%70 mA 10% DigiMod 1500300 mA 10%70 mA 10% DigiMod 2000HV300 mA 10%70 mA 10% 18Vdc 20mA +15Vdc -15Vdc ModelKit Nu
29、mber Description DigiMod 500KT000819.R KIT DM500 AMP 1CH DigiMod 1000KT000821.R KIT DM1000 AMP 1CH DigiMod 1000NPSKT000822.R KIT DM1000NPS AMP 1CH DigiMod 1500KT000824.R KIT DM1500 AMP 1CH DigiMod 2000KT000827.R KIT DM2000 AMP 1CH In case of any faults in the aforementioned components, please refer
30、to the table below when ordering the Repair Kit. 14 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL INDEX By means of the DIGIMOD AMP AUX VOLTAGE CABLE, connect a DC power supply and set the output voltage to 15Vdc. Check the shape of the waveforms by first probing on the 2, 4 pins of the U15
31、IC, then check the shape of the waveforms by probing on pins 6, 8. The waveforms should be shaped as portrayed in the figure below. +15Vdc -15Vdc 15 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL INDEX +15Vdc -15Vdc By means of the DIGIMOD AMP AUX VOLTAGE CABLE, connect a DC power supply and
32、set the output voltage to 15Vdc. Check the shape of the waveforms by probing the highlighted pins on the Q3, Q4, Q5, Q6 Mosfets. The waveforms should be shaped as portrayed in the figure below. 16 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL INDEX By means of the DIGIMOD PSU VOLTAGE CABLE,
33、connect a DC power supply to the CN4 connector and set the output voltage to 18Vdc. By means of the DIGIMOD MAIN DC CABLE, connect a second DC power supply and slowly supply +30Vdc to the module. Verify the Rail Bus Voltage by probing on the highlighted points in the CN13 connector, it should be as
34、portrayed in the following table. 18Vdc +30Vdc V V ModelRail Bus Voltage DigiMod 500+/- 6.5 Vdc 10% DigiMod 1000+/- 6.5 Vdc 10% DigiMod 1500+/- 8.5 Vdc 10% DigiMod 2000HV+/- 14.5 Vdc 10% 17 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL INDEX By means of the DIGIMOD AMP AUX VOLTAGE CABLE, con
35、nect a DC power supply and set the output voltage to 15Vdc. Check the AUX voltages by probing on the highlighted points in the CN14 connector. Alternatively it is possible to check the Aux Voltages while the board is removed from its chassis by checking the voltage regulators on the back side of the
36、 board, as indicated on (Fig. 12) +15Vdc -15Vdc V Ground -12Vdc +12Vdc +5Vdc (Fig. 12) Ground +12Vdc -12Vdc +5Vdc 18 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL INDEX +15Vdc -15Vdc By means of the DIGIMOD AMP AUX VOLTAGE CABLE, connect a DC power supply and set the output voltage to 15Vdc.
37、 (Fig. 13) (Fig. 13) (Fig. 14) Check the Control board by measuring its oscillators clock signal, it should be 12MHz. (Fig. 14) In this configuration, all 3 green LEDs should be on, whilst both yellow ones should be OFF. (Fig. 15) Any other LED configuration is a sign oaf a CNTRL Board fault, in thi
38、s case replace the CNTRL Board. (Fig. 15) 19 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL INDEX Signal Signal CH1 Protect CH2 Protect +5Vdc +12Vdc -12Vdc Indicated on (Fig. 16) are the Control Board LEDs and their functions. (Fig. 16) Connect the power cable to the CN1 connector located on
39、the opposite side of the control board. Check if all 3 green LEDs are on. Connect a function generator or a cd player to the module through the CN12, CN11 connectors. Select an audio track from the Powersoft Test CD, or a Sine wave test tone. Verify the presence of audio signal by probing on the CN7
40、, CN3 connectors with an oscilloscope. Signal Ground 2 Signal Ground 1 Balanced Input +2 Balanced Input -2 Balanced Input -1 Balanced Input +1 CH2 OUT + CH2 OUT - CH1 OUT + CH1 OUT - Indicated on (Fig. 17) is the pin out of the CN7, CN12, CN11, CN3 connectors. (Fig. 17) 8. Output Current Offset Cali
41、bration Procedure: Signal Ground 2 Signal Ground 1 Balanced Input +2 Balanced Input -2 Balanced Input -1 Balanced Input +1 CH2 OUT + CH2 OUT - CH1 OUT + CH1 OUT - Connect a Signal Generator/Cd Player to the module via the CN12, CN11 Connectors. Supply a 1Vrms 1 KHz Sine Wave or play the first track
42、of the Powersoft Test CD, in which case check with a multimeter if the output signal of the cd player is 1Vrms. Located on both top corners of the Control Board are the Output Current Offset Trimmers, adjust them by turning the flat head screw until the yellow LEDs below turns off. Portrayed on (Fig
43、. 18) are the CH1, CH2 inputs, the Output Current Offset Trimmers and the Yellow LEDs. (Fig. 18) 20 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL INDEX 9. SIlpad Replacement Procedure IS000040 ULTRASOFT 18x30 mmIS000031 HI-FLOW 40 x55 mm Once the repair procedure has been ultimated, replace
44、all silpads. Remove any residue of dirt, glue or dust that might have been trapped in the module. The following images portray where to place the IS000040 Silpad. DigiMod 1000NPSDigiMod 500, 1000, 1500, 2000HV When replacing the IS000031 SilPad, clean all the components and the heatsink prior to tig
45、htening te retainer springs in place. 21 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL INDEX 10. DSP FW installation procedure: Once the repairing procedure is over, reset the DSP board by upgrading the FW. DigiMod comes with two types of DSP boards: DSP-C (Black PCB, 4 Micro Match) DSP-D (B
46、lue PCB, 3 Micro Match) Select the appropriate preset from the Preset Bank Selection control dials, by confronting the aforementioned table. Verify the position of jumper 4 should be “OPEN” (Fig. 20) Turn on the module and wait 10 sec. (Fig. 20) Verify if the green power led “PWR” and “D16” are on (
47、Fig. 21) (Fig. 21) Wait for the 3 beeps signaling the end of the FW upgrade procedure. Turn off the module and remove the ribbon cable Press switch “S7” on the programming board Verify if the orange led “DATA” is blinking (Fig. 22) (Fig. 22) DSP VersionFirmware Version Preset TensUnits DSP-C1.2.010
48、DSP-D1.0.010 After having identified the board, connect the ribbon cable between the respective matching Programming Board and the Modules DSP board (Or the interface board if present). (Fig. 19) (Fig. 19) 22 DigiMod 500 1000 1500 2000HV 1000NPS | SERVICE MANUAL INDEX 11. Repair Kit List: KT000818.R
49、 KIT DM500 PSU ModelKit NumberDescription 500 KT000818.RKIT DM500 PSU KT000819.RKIT DM500 AMP 1CH 1000 KT000820.RKIT DM1000 PSU KT000821.RKIT DM1000 AMP 1CH 1000NPSKT000822.RKIT DM1000NPS AMP 1CH 1500 KT000823.RKIT DM1500 PSU KT000824.RKIT DM1500 AMP 1CH KT000825.RKIT DM1500 FAN 2000HV KT000826.RKIT DM2000 PSU KT000827.RKIT DM2000 AMP 1CH KT000828.RKIT DM2000 FAN KT000820.R KIT DM1000 PSU KT000822.R KIT DM1000NPS AMP 1CH KT000824.R KIT DM1500 AMP 1CH KT000819.R KIT DM500 AMP 1CH KT000
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