Crown D-150A Service Manual Download Page 8 | Manualshive

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Summary of Contents for D-150A

Page 1: ...croiun SERVICE MANUAL D 150A POWER AMPLIFIER CROWN INTERNATIONAL INC 1718 W MISHAWAKA RD ELKHART INDIANA 46517 1988 Crown International Inc K30028 2 1 83...

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Page 3: ...ploded View Drawings Maintenance 7 1 Introduction 7 2 Required Test Equipment 7 3 Soldering Techniques 7 4 Basic Troubleshooting 7 5 Discharging Instructions 7 6 Disassembly for Inspection Service Tes...

Page 4: ...ayout MI 26 1C Main Board Schematic MI 26 1C Foil Board Layout MI 261 D Main Board Schematic MI 261 D Foil Board MI 261 E Main Board Schematic MI 26 IE Component Board Layout MI 261 E Foil Board Layou...

Page 5: ...ternal resistance at inputs of amp DC Output Offset Shorted Input 10 millivolts or less internally adjustable to zero Turn On Instantaneous with minimum thumps and no program delay Circuit Wideband mu...

Page 6: ...8 ohm usage safely drives any load including completely reactive loads Voltage Gain 20 6 2 or 26 3 2dB at maximum gain Input Sensitivity 1 19 volts 2 for 80 watts into 8 ohms Output Signal Unbalanced...

Page 7: ...INDICATOR CHANNEL 1 INPUT LEVEL CONTROL CHANNEL 2 INPUT LEVEL CONTROL ON OFF SWITCH Fig RVW 2 D 150A Rear Panel F MONO STEREO SWITCH G CHANNEL 2 UNBALANCED INPUT H CHANNEL 1 UNBALANCED INPUT I AC POW...

Page 8: ...rformance Graphs DS Idb Odb Idb 2db mmm FREQutNQ RES MM PON 16 ohm load 8 ohm load 4 ohm load 1Hz 1Hz 10Hz 100Hz IKHz lOKHz lOOKHz Fig RVWJ Nominal Frequency Response Fig RVW 4 Nominal Phase Response...

Page 9: ...croujn Fig RVW 5 Nominal Crosstalk Fig RVW 6 Nominal Noise Spectrum...

Page 10: ...100Hz IKHz lOKHz lOOKHz Fig RVW 7 Nominal Output Impedance degrees lOKHz lOOKHz Fig RVW 8 Nominal Output Phase Angle...

Page 11: ...cfQtun lOOKHz lOKHz IKHz 100Hz Fig RVW 9 Nominal Damping Factor 8 ohms lOOKHz lOKHz 100Hz Fig RVWAO Nominal Power Efficiency...

Page 12: ...x cont AC power Za 3 ohms AC line fuse blows DC single ch if both ch driven equally fuse blows at half value given X X Short circuit cont limit Max AC limit Zl V out sine at max Fig RVW Il V 1 Plot R...

Page 13: ...electronic supply houses However some electronic parts that appear to be standard are actually special A part ordered from Crown will assure an acceptable replacement Structural items covers and panel...

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Page 15: ...19 R219 R122 R222 R124 R224 82 ohm 25W 5 CF C 3960 9 6 Parts List D 150A Main Module For SN26591 and above Schematic Designation Crown Part No Description Qty Other Information R120 R220 5 IK ohm 1W 5...

Page 16: ...D 150A Front Panel Assembly Index Schematic No Designation Description Crown Part No Qty Other Information i 83 Aluminum Knob D 4075 4 3 2 375 Bright Nut C 1288N7 3 3 625x 375x 030 Brightwasher C 218...

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Page 18: ...70 72 6 17 Fig 6 17 Chassis Assembly...

Page 19: ...Output Inductor Assembly M40959 5 2 55 Solder Lug 8 Hole D 2935 1 1 56 8 32x1 75 Stud Screw C 3324 8 2 57 F2 MDX 7 Amp Fuse C 4385 8 1 58 Fuse Block C 3776 9 1 59 Pressure Sensitive Tape S 1152 8 60 T...

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Page 21: ...tputs 86 Shoulder Insulator C 4039 1 4 87 T03 Insulator D 4071 3 4 88 6 Internal Star Washer C 5594 4 13 89 6 32 Hex Nut C 1889 2 13 90 Q109 Q209 Q1I3 Q2I3 Sel 2N3585 NPN D 3295 9 4 Drivers 91 TO 66 A...

Page 22: ...Parts List Miscellaneous Assembly 6 21 Fig 6 19 Miscellaneous Assembly...

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