Classe Audio Delta Series Service Manual
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Classe Audio Delta Series Service Manual

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Service Manual
___________________________________________
Delta-Series Amplifiers:
CA 2100 Stereo Amplifier
CAP 2100 Integrated Stereo Amplifier
___________________________________________
CA(P)2100 AMP Service Manual v1.4 inc voltage change info .doc
v1.4
Classé Audio Inc
5070 Francois Cusson
Lachine, Quebec, Canada
H8T 1B3
Tel: (514) 636-6384
Fax: (514) 636-1428
www.classeaudio.com
Page 1 of 50

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  • Page 1 Classé Audio Inc 5070 Francois Cusson Lachine, Quebec, Canada H8T 1B3 Tel: (514) 636-6384 Fax: (514) 636-1428 www.classeaudio.com Service Manual v1.4 ___________________________________________ Delta-Series Amplifiers: CA 2100 Stereo Amplifier CAP 2100 Integrated Stereo Amplifier ___________________________________________ CA(P)2100 AMP Service Manual v1.4 inc voltage change info .doc Page 1 of 50...

  • Page 2: Table Of Contents

    Contents ............................5 LIST ..........................6 ESTING ROCEDURES : ........................6 RODUCTION TESTING ): .................. 6 TART UP TESTING COMPLETE AMPLIFIER : ..........................7 INAL TESTING ........................8 ROGRAMMING ROCEDURES : ..........................8 RODUCTION ..................9 OWER UPPLIES AND APACITOR OARDS CA2100:.................................
  • Page 3 CA2100 AUX P ...................... 24 OWER UPPLY CAP2100 AUX P ....................25 OWER UPPLY ................25 URRENT SENSOR ZERO CALIBRATION CHECK MOSFET ..................25 AIN AND POWER SUPPLIES ......................26 AIN PLUG IN BOARD RAILS ........................... 26 IAS CHECK ........................26 UTPUT OFFSETS ..................
  • Page 4 ........................41 EPLIES AND TATUS D: T ....................43 PPENDIX YPICAL PECIFICATIONS E: P ......................44 PPENDIX OWER EQUENCE F: M ....................45 PPENDIX ODIFICATIONS CHECKLIST CA2100: ............................45 CAP2100: ............................46 G: T ......................49 PPENDIX ROUBLESHOOTING CA(P)2100 AMP Service Manual v1.4 inc voltage change info .doc Page 4 of 50...

  • Page 5: Pcb List

    PCB list Description CA2100 CAP2100 B3A1XR02 Capacitor board B3A2XR02 Left output board B3A3XR00 Right output board B3A5XR03 Aux power supply B3A7XR03 AC-sensor board B3A8XR01 Front Panel B3B1XR04 Sensor & Control plug-in board B3B3XR04 AC-control board B3B6XR04 (modified) Voltage amplifier (“main”) plug-in board B3B9XR04 Communications board B507XR01...

  • Page 6: Testing Procedures

    Testing Procedures Production testing: Individual testing for the following boards: o AUX power supplies o Capacitor boards o Neutral Filter boards o AC-sensor boards o Main (plug-in amp) boards o Heatsink boards Calibration and testing for the following boards: o Sensor/control boards o AC-control boards “Group”...

  • Page 7: Final Testing

    Audio Precision measurements (results logged in computer database) Final testing: Burn-in 1 (open unit on idle, 2 nights at 120Vac) Final Test Part 1 (open unit): Visual inspection (everything !) & modifications check Final bias adjustment (at 120V) Software versions check AC-control calibration check AUX power supply voltages Current sensor zero calibration check...

  • Page 8: Programming Procedures

    Programming Procedures Production: The processors on the following boards need to be programmed: AC-control (PIC16F819) Sensor/control (PIC16F819) Front panel (PIC18F258) Please see Appendix F for the latest software revisions. The Front Panel board needs to be defaulted (its memory cleared completely) immediately after its FIRST programming (during the “group”...

  • Page 9: Aux Power Supplies And Capacitor Boards

    Aux Power Supplies and Capacitor Boards CA2100: Testing the AUX Power supply Board (B3A5XR02) Perform a detailed visual inspection of the Aux Power Supply. Check all capacitor directions (polarity). Check if all capacitors are standing up properly. Verify (measure if necessary) that the Voltage Selector (CON1) resistors are: 0 ohms for the 100Vac setting, 75 ohms for the 120Vac setting, 182 ohms for the 230Vac setting,...

  • Page 10: Cap2100

    Bring up the AC gradually (in 15V steps) while measuring the main DC rails at +V201 and –V201 relative to ground at GND201. Keep a close eye on the circuits, listen for frying or popping noises, and feel the variac for vibration caused by excess current.

  • Page 11: Testing Capacitor Board (B3F3Xr00)

    Before regulator Q301 (left side of diode D301) about 20Vdc After regulator Q301 (right side of diode D301) 12Vdc. Before regulator Q302 (right side of diode D302) about -20Vdc After regulator Q302 (left side of diode D302) -12Vdc. Before regulator Q401 (pin 1) 12Vdc After regulator Q401 (pin 3) 5Vdc.

  • Page 12: Sensor / Control Board

    Sensor / Control Board Before you begin, perform a detailed visual inspection of the board. Check for missing components, missing solder or accidental solder bridges (especially under surface-mount ICs). Check direction of all ICs, capacitors, and diodes, and other visible problems. Calibrating the Sensor / Control Board (PCB B3B1XR04) Check all components.

  • Page 13: Ac Boards

    AC Boards Before you begin, perform a detailed visual inspection of the AC-sensor and AC-control boards. Check for missing components, missing solder or accidental solder bridges (especially under surface-mount ICs). Check direction of all ICs, capacitors, and diodes, and other visible problems. Testing the AC-Sensor board (PCB B3A7XR00) Check all components.

  • Page 14: Testing The Complete Control Assembly

    Connect 120Vac between terminals N4 (neutral) and N5 (live) on the AC-Sensor board RS-232 setup: Connect an RS-232 cable from the serial port of a computer to your Delta series amplifier. Start HyperTerminal on the computer and configure the serial port to which you connected as follows:...

  • Page 15: Ac Power Check

    Verify the version of software loaded into the front-panel board and the control/sensor modules (see Appendix F for latest software versions). If these are not up-to-date, you should load the latest software versions using the MPLAB ICD 2 “hockey-puck” programmer. Set the model number of the amplifier according to which front panel you are testing (see Appendix B).

  • Page 16: Sensor /Control Module Check 1

    Sensor/Control module check 1: Type in “LPI” (list programmable items). You will get the following type of response depending on the amplifier model and the number of sensor/control boards attached: INP1 = B | RTP1 = 6 | RTN1 = 6 | TTP1 = 90 FBI1 = 90 | RFT1 = 30 | LFE1 = 0 INP2 = B | RTP2 = 6 | RTN2 = 6 | TTP2 = 90 FBI2 = 90 | RFT2 = 30 | LFE2 = 0...

  • Page 17: Input Type Selection

    corresponding channel is in Single-ended mode. For each channel, only one of the two LEDs should be active (upper of lower, depending on the selected mode for that channel). A red LED indicates a fault condition. Note that the timing of these LEDs does NOT correspond to the timing of the relays. When the system is powered-up, all channel LEDs (either upper OR lower) should be solid blue.

  • Page 18: Sensor /Control Module Check 2

    Sensor/Control module check 2: Once the system is powered on, type in “sda” (follower by the Enter key). The sensor/control modules will return a real-time snapshot of current and temperature values as follows: AMP1: POS 0A | NEG 0A | TEMP 10C AMP2: POS 0A | NEG 0A | TEMP 6C Ignore the temperature readouts at this point –...

  • Page 19: Testing The Main Amp Plug-In Board

    Testing the main amp plug-in board B3B6XR04 (modified for CA2100/CAP2100) Perform a detailed visual inspection of the main amp plug-in board. Verify that the board has been updated as listed in Appendix F. Check the types and orientations of the transistors, the polarity of the caps, and the values of the resistors. The orientation of the little red LEDs cannot be checked after installation but will become obvious when the board is powered up (all LEDs should be ON).

  • Page 20: Testing The Heatsink

    Testing the Heatsink Before you begin, turn trimpot RV101 (or RV201 depending on the orientation of the board) on the heatsink board all the way CCW. This will bring the biases on the output transistors to zero. Perform a detailed visual inspection of the heatsink board. Verify that the board revision is up-to-date (the board number can be found on the bottom side of the board just beside the break-away portion and can only be seen with a mirror).

  • Page 21: Signal Pass-Through And Oscillation Check

    Signal pass-through and oscillation check Connect a modified 10-pin plug to the connector next to R119 on the heatsink board. On this10-pin plug short pins 7 and 8 to pin 9 (on the heatsink side) to activate the O/P and Mute relays. Also add a wire on pin 4 to switch from Balanced (default) to Single-ended input later.

  • Page 22: Start-Up Testing (Complete Amplifier)

    Start-up Testing (complete amplifier) Checklist: Test CA2100 CAP2100 Visual inspection (EVERYTHING !) and basic checks (modifications etc) 50/100 ohms check Software version check AC-control calibration check AUX power supply voltages Current sensor zero calibration check Main and MOSFET power supply voltages Main plug-in board rails Bias check on heatsinks Output DC offsets (ALL outputs)

  • Page 23: 50/100 Ohm Check

    Check that the main fuse and the internal fuses are correct for 120Vac operation (see Appendix A). Also verify that the internal fuse-holders are tight. If you are using 120Vac power, verify that the first and last (but no other) jumpers are present on Voltage Selector (VS connector) on the AUX Power Supply board.

  • Page 24: Ca2100 Aux Power Supply

    For a CA2100 Open the DCI software and select AMPLIFIER. After, click on the FAC command ton see the factory data. You should see: D-AMP Ver: 1.1 Copyright (c) 2003 Classe Audio Sr No:0123456789ABCDEF Model: CA2100, Amp# 1 AC Control: 4A, Heatsink 1: M1, Heatsink 2: M1 These are the latest version of the software After this, you have to enter the serial number of the unit.

  • Page 25: Cap2100 Aux Power Supply

    Then click on the LPI command, you should see: INP1 = . | RTP1 = 10 | RTN1 = 10 | TTP1 = FBI1 = 90 | RFT1 = 30 | LFE1 = INP2 = . | RTP2 = 10 | RTN2 = 10 | TTP2 = FBI2 = 90 | RFT2 =...

  • Page 26: Current Sensor Zero Calibration Check

    Main plug-in board rails Measure the voltages on the accessible ends of R140 and R141 on each of the main boards. The values of R140 and R141 on one main board should be exactly the same. With the main supplies at +/-66.0Vdc, you should see a value between +/-53.4Vdc and +/-54.6Vdc (relative to analog ground on the backplate) for CA2100 and CAP2100.

  • Page 27: Full Power & Oscillation Check

    the input. Check that the gain is correct (29dB) and that there is no oscillation on any portion of the output waveform. Also verify that the mute function works on all channels (See RS-232 function test and Appendix Full power & oscillation check NOTE: For CAP2100 do these following tests with volume 86dB, that is the unity gain of the CAP.

  • Page 28: Cap2100: Phono Board Detection And Gain Test

    CAP2100: Phono board detection and gain test Plug in two phono test circuits and make sure they are detected by the unit (the display will show “phono” instead of “Line 1”. (If one of the test circuits is not detected then there will be an error message). In the menu got to “system setup”...

  • Page 29: Cap2100: Rs-232 Function Test

    Click on sdp again to check the AC power when the amp is ON (notice the current reading and make sure it is the same as for other amps of this model). Click on sda to check the status of the sensor/control modules on each heatsink. Make sure that the current readings are zero (as long as there is no signal) and that the temperature readings are reasonable and stable.

  • Page 30: Button Function Test

    Button function test Verify that all the front panel buttons work well. See section on Input Selection and AMP# selection. Verify that the Input type (Bal or S/E) and AMP# (1-15) are reflected in the RS-232 communication. Trigger function test For a CA2100 For this test you will need another CA(M)-XX00.

  • Page 31: Ca2100 Dc Protection Test

    For a CAP2100 Turn the CAP2100 on. Connect the IR out from the IR/Trigger box to the IR in from the unit. Connect a 1/8 cable to your IR out of the unit. Turn on the Trigger/IR box. Put you multimeter to the other end of the of the 1/8 cable, you should see about 5Vdc (relative to the output ground or the ground of the 1/8 cable).

  • Page 32: Cap2100 Dc Protection Test

    CAP2100 DC protection test As above, but use any single-ended input (only one per side) and set volume to 80. Note: For the DC protection test, you can accept a difference of +/-5mVdc to trigger the protection Short-circuit protection test Apply a 75mVrms / 2kHz signal (sinewave) to the single-ended input of the amplifier.

  • Page 33: Ca2100 Can-Bus Function Test

    Internal Temp. = 30 C Ground is ok Line phase is wrong After the test plug back the normal AC cable. For a CAP2100 For this test, you will need a reverse phase AC cable and a ground missing AC cable. First of all, disconnect the RS-232 cable from your unit.

  • Page 34: Audio Precision Testing

    7. Record the results. Step 2 1. Disconnect the cable in the IR IN receptacle on the EUT 2. Connect the 02100A-13 (with no attachments) to the RETURN receptacle of the HYPOT III and make sure the aluminum ground bar is securely attached to the EUT heat sink with two standoffs. Then attached the alligator clip of the 02100-13 cable to the bar.
  • Page 35 THD+N: 0.002% at 1kHz (unweighted, 1Vrms input, 10Hz-500kHz bandwidth) FFT: with the inputs terminated (50ohms) the noise peaks should all be lower than -95dBV. Appendix D for full specifications. CA(P)2100 AMP Service Manual v1.4 inc voltage change info .doc Page 35 of 50...

  • Page 36: Appendix A: Fuses

    Appendix A: Fuses Internal: On AC-Sensor board (B3A7XR01): 400mA/250Vac for 120Vac and 240Vac (slow-blow, GDC or T400) On Voltage Selector board (B3F4XR00): 800mA/250Vac for 120Vac (slow-blow, GDC or T800) 400mA/250Vac for 240Vac (slow-blow, GDC or T400) External: Model 120Vac 240Vac CA 2100 CAP 2100 6A CA(P)2100 AMP Service Manual v1.4 inc voltage change info .doc...

  • Page 37: Appendix B: Ca2100 Rs-232 I

    Appendix B: CA2100 RS-232 Interface Connect an RS-232 cable from the serial port of a computer to your Delta series amplifier. Start HyperTerminal on the computer and configure the serial port to which you connected as follows: Baud rate: 9600 bits per second...
  • Page 38 Total ON time = 10 days, 18 hours, 22 minutes Displays the total number of faults, fault time, amp number and fault code. For example: There are 7 faults recorded. D-AMP Ver: 1.0 Copyright (c) 2003 Classe Audio Sr No:1580006 Model: CA2100, Amp# 1...

  • Page 39: Factory Commands Available Only With A Password

    returns a list of programmable items as follows (see explanation below): INP1 = B | RTP1 = 6 | RTN1 = 6 | TTP1 = 90 FBI1 = 90 | RFT1 = 30 | LFE1 = 0 INP2 = B | RTP2 = 6 | RTN2 = 6 | TTP2 = 90 FBI2 = 90 | RFT2 = 30 | LFE2 = 0 Entry of programmable items as follows: Note all entries must be two or three digit numeric within the limits shown above (enter 7 as 07).

  • Page 40: Rev 1.0

    Appendix B2: CAP2100 RS-232 Interface Rev 1.91 (19 April 2004) Revision History: added IR code command and LCD low power control, selectable baud added amplifier fault times status and tape monitor control changed fault time status to include days, added running time status modified IRC spec for 3 digit IR code modified thermal values returned in status to match amplifier standard removed tech items...

  • Page 41: Off

    BALL shift balance ½ dB to left BALC recenter to even balance BALR shift balance ½ dB to the right STBY puts CAP-2100 into standby. OPER puts CAP-2100 into operate mode T1_0 turns off trigger 1 T1_1 turns on trigger 1 T2_0 turns off trigger 2 T2_1...
  • Page 42 This will be available in CAP/CP v1.0.8 (released tonight or tomorrow morning). Please let me know if it sounds good and looks like what you guys wanted and expected. Thanks ! SDA: (CAP-2100 only) > SDA Heatsink 1: POS 00 A | NEG 01 A | TEMP 33 °C Heatsink 2: POS 00 A | NEG 01 A | TEMP 32 °C SDP: (CAP-2100 and CP-500) >...

  • Page 43: Appendix D: Typical Specifications

    Appendix D: Typical Specifications Balanced inputs: Voltage gain: 29.1dB Bandwidth: 155kHz (-3dB) 22kHz (-0.1dB) Phase: -8 degrees (22kHz) -50 degrees (155kHz) Power: (at 120Vac, 1kHz signal, resistive load) CA5200: All 5 channels driven at the same time: 8 ohms 4 ohms 247 Watts 400 Watts CA3200:...

  • Page 44: Appendix E: Power-On Sequence

    Appendix E: Power-on Sequence CA(P)2100 AMP Service Manual v1.4 inc voltage change info .doc Page 44 of 50...

  • Page 45: Appendix F: Modifications Checklist

    Appendix F: Modifications checklist CA2100: All boards with Voltage Selector circuit (voltage select LEDs): Changed 100V selection resistor to 0ohm All amps control/sensor boards (B3B1XR04): Added 10k ohm resistor from GNDD to U4 pin 4 (pull-down for MUTE_CTR) All amps AC-control board (B3B3XR02) Added 0.47uF / 63V WIMA cap from anode of diode D3 (next to test point T1) to ground Added 10uF/16V capacitor from “current sense”...

  • Page 46: Cap2100

    CAP2100: All boards with Voltage Selector circuit (voltage select LEDs): Changed 100V selection resistor to 0ohm All amps control/sensor boards (B3B1XR04): Added 10k ohm resistor from GNDD to U4 pin 4 (pull-down for MUTE_CTR) All amps AC-control board (B3B3XR02) Added 0.47uF / 63V WIMA cap from anode of diode D3 (next to test point T1) to ground Added 10uF/16V capacitor from “current sense”...
  • Page 47 Change R8 to RN55D1001 Removed resistor R9, cut GND_TRIG trace between trig-in and trig-outs (removed ground from trig-outs, and jumpered normal ground from other side of R9 (end closer to edge of board) to trig-out ground. R1 changed to RN60D75R0 CAP2100 GUI board (B42AXR06): 1.
  • Page 48 PIC (BP): 0 83_BLT Heatsinks: mod_LFE_L1 AC-control: pwr_2H NOTE: Volume chip series 39Z and H5 are suspected bad (they cause popping noises when volume is changed at fairly low levels). CA(P)2100 AMP Service Manual v1.4 inc voltage change info .doc Page 48 of 50...

  • Page 49: Appendix G: Troubleshooting

    Appendix G: Troubleshooting Symptom Possible cause Revisions affected DC offset of about 30mV Main plug-in (amp) board, transistor Q111, pins 1 and 2 not reversed B3B6XR03, XR02, XR01, XR00 Ch 2 heatsink not on 5-pin cable on AUX PS not pin-to-pin (reverse) Production problem (CA5200) IR not working R105 on IR board not changed to 200 ohms...
  • Page 50 Tolerance for Board Testing (%) Tolerance for Unit Testing (%) Tolerance for resistors (%) BOARD TESTING MAX current allowed 0.030 0.019 0.038 MIN current allowed 0.028 0.017 0.036 MAX voltage allowed 12.48 12.48 7.70 MIN voltage allowed 11.52 11.52 7.10 MAX voltage allowed 54.48 72.48...

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