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Crown 460CSL - page 1
Power Base-1 & 460CSL Amplifier Service Manual 1 POWER BASE-1 ® & 460CSL ™ PO WER AMPLIFIER SER VICE MANU AL K-SVCPB1 1-95 CSL ™ is a trademark and Power Base-1, ® ODEP ® and Crown ® are registered trademarks of Crown International, Inc. Mailing Address: P.O. Box 1000 Elkhart, IN U.S.A. 46515-1000 Shipping Address: 57620 C.R. 105 El ...
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Crown 460CSL - page 2
Power Base-1 & 460CSL Amplifier Service Manual 2 À PRÉVENIR LE CHOC ÉLECTRIQUE N’ENLEVEZ PAS LES COUVERTURES. RIEN DES PARTIES UTILES À L’INTÉRIEUR. DÉBRANCHER LA BORNE AVANT D’OUVRIR LA MODULE EN ARRIÈRE. TO PREVENT ELECTRIC SHOCK DO NOT REMOVE TOP OR BOTTOM COVERS. NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SE ...
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Crown 460CSL - page 3
Power Base-1 & 460CSL Amplifier Service Manual 3 Introduction ............................................................. 4 Scope ...................................................................... 4 Warranty .................................................................. 4 Parts ......................................................... ...
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Crown 460CSL - page 4
Power Base-1 & 460CSL Amplifier Service Manual 4 Crown Technical Support Group Factory Service Parts Department Mailing Address: PO Box 1000 Elkhart, IN USA 46515-1000 Shipping Address: 57620 C.R. 105 Elkhart, IN USA 46517 Phone: (219) 294-8200 Toll Free: (800) 342-6939 FAX: (219) 294-8301 This manual contains service information on Crown power ...
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Crown 460CSL - page 5
Power Base-1 & 460CSL Amplifier Service Manual 5 Parts shipment on a C.O.D. or pre-payment (check or credit card) basis. TERMS Normal terms are pre-paid. Net-30 Days applies to only those firms having pre-established accounts with Crown. If pre-paying, the order must be packed and weighed before a total bill can be established, after which an a ...
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Crown 460CSL - page 6
Power Base-1 & 460CSL Amplifier Service Manual 6 Specifications Unless noted otherwise, all specifications are based on driving an 8 ohm load per channel, both channels driven, the sensitivity switch in the 26dB position, the AC supply is 120V AC at 60Hz. Crown specifications are guaranteed thr ough the warranty period (nor mally 3 years). Beca ...
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Crown 460CSL - page 7
Power Base-1 & 460CSL Amplifier Service Manual 7 V oltage Conversion Note: The only versions of this product pr oduced at the Crown Factory with inter national volt- age capabilities built in ar e CSL versions built specifically for sale outside the United States. P16 P10 P15 P14 P13 P12 P11 P9 P8 P7 P6 P5 P4 P3 P2 P1 P22 P21 P18 P17 P19 P20 F1 ...
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Crown 460CSL - page 8
Power Base-1 & 460CSL Amplifier Service Manual 8 Theor y OVERVIEW It should be noted from the outset that the PB-1 and 460CSL amplifiers are electrically and mechanically identical products. The only differences, from a ser- vice perspective, are cosmetic. For the purposes of servicing the products, it should also be known that the CSL version ...
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Crown 460CSL - page 9
Power Base-1 & 460CSL Amplifier Service Manual 9 Theor y tivity is achieved by controlling the ratio of feedback to input resistance. The Sensitivity Switch sets the input impedance to this stage and varies the gain such that the overall amplifier gain is 26 dB, or is adjusted appropriately for 0.775V or 1.4V input to attain rated output. Note ...
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Crown 460CSL - page 10
Power Base-1 & 460CSL Amplifier Service Manual 10 allows the NFb loop to control Error Amp gain by feeding back to its non-inverting input (with its polarity opposite to the output of the VGS). With the added voltage swing provided by the LVAs, the signal then gains current amplification through the Darlington emitter-follower output stage. GRO ...
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Crown 460CSL - page 11
Power Base-1 & 460CSL Amplifier Service Manual 11 the positive half, and about .5V across the bias resistor in the negative half. Q18 conduction (and thus bias) is adjustable. A diode string prevents excessive charge build up within the high conduction output devices when off. Flyback diodes shunt back-EMF pulses from reactive loads to the powe ...
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Crown 460CSL - page 12
Power Base-1 & 460CSL Amplifier Service Manual 12 Theor y ±ODEP circuitry is used to simulate the thermal barri- ers between the interior of the output device die (immeasurable by normal means) and the time delay from heat generation at the die until heat dissipates to the thermal sensor. The combined effects of thermal history and instantaneo ...
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Crown 460CSL - page 13
Power Base-1 & 460CSL Amplifier Service Manual 13 Checkout Procedures GENERAL INFORMATION The following test procedures are to be used to verify operation of this amplifier. DO NOT connect a load or inject a signal unless directed to do so by the proce- dure. These tests, though meant for verification and alignment of the amplifier, may also be ...
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Crown 460CSL - page 14
Power Base-1 & 460CSL Amplifier Service Manual 14 TEST 4: AC POWER DRAW Spec: 90 Watts maximum quiescent. Initial Conditions: Controls per standard. Procedure: With no input signal and no load, measure AC line wattage draw. If current draw is excessive, check for high AC line voltage or high bias voltage. TEST 5: COMMON MODE REJECTION Spec at 1 ...
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Crown 460CSL - page 15
Power Base-1 & 460CSL Amplifier Service Manual 15 Checkout Procedures Procedure Capacitive: Load each channel to 8 ohms in parallel with 2 µF. Inject a 20 kHz sine wave with 30 VAC output for 10 seconds. Procedure Inductive: Load each channel to 8 ohms in parallel with 159 µHenries. Inject a 1 kHz sine wave with 15 VAC output for 10 seconds. ...
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Crown 460CSL - page 16
Power Base-1 & 460CSL Amplifier Service Manual 16 Checkout Procedures ...
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Crown 460CSL - page 17
Power Base-1 & 460CSL Amplifier Service Manual 17 Mechanical (Non-Module) Parts SUPPLIMENTAL ITEMS CP N ITEM QTY D 4137-2 Nylon Thumbscrew W asher 4 C 3342-0 Feet, Black Self-Stick 4 A10087-71012 10-32 .75 Machine (Rack Screw) 4 120VAC/60HZ NORTH AMERICA PRODUCT ONLY CP N ITEM QTY A10285-26 Fuse, 10A 3AB (120V Units) 1 A10285-7 Fuse, .5A AGC 1. ...
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Crown 460CSL - page 18
Power Base-1 & 460CSL Amplifier Service Manual 18 Mechanical (Non-Module) Parts OUTPUT ASSEMBLY (ONE PER CHANNEL) CP N ITEM QTY A10100-4 W asher , #6 Flat Zinc 2 A10315-1 Screw , 6-32-.56 Hex Washer Head 12 C 4751-1 NPN Output Device 2 C 5826-0 S100/S200 Thermal Sense LM334Z 1 C 6492-0 PNP Output Device 2 C 7326-9 Solder Lug, #6 Tin 2 C 8573-5 ...
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Crown 460CSL - page 19
Power Base-1 & 460CSL Amplifier Service Manual 19 Mechanical (Non-Module) Parts MAIN CHASSIS ASSEMBLY CP N ITEM QTY A10086-11008 Screw , 10-32-.5 Mach Rd Ph 4 A10086-70806 Screw , 8-32-.37 Mach Rd Ph 2 A10089-11032 Screw , 10-32-2 Mach Pan Ph 4 A10094-3 W asher , #6 Black Star 3 A10094-6 W asher , #8 Black Star 4 A10094-8 W asher , #10 T ooth L ...
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Crown 460CSL - page 20
Power Base-1 & 460CSL Amplifier Service Manual 20 Module Information MODULE HISTORY Since its introduction in 1986, the PB-1 has gone through a number of updates and revisions. Over the course of its history some of these changes have resulted in upgrading to newer modules. What follows is a historical breakdown of PB-1 modules. It should also ...
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Crown 460CSL - page 21
Power Base-1 & 460CSL Amplifier Service Manual 21 Q42576-1 Output Module Parts List (P10137-1 Board) Q42576-1 Output Module (4 Resistor Original) for PB-1: CAPACITORS C01 C 3978-1 .047µF C02 C 6804-6 .1µF C03 C 6804-6 .1µF C04 C 3996-3 .0047µF C05 C 6807-9 .001µF C06 C 6806-1 .01µF C07 C 6807-9 .001µF C08 C 6810-3 180pF C09 C 6809-5 220p ...
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Crown 460CSL - page 22
Power Base-1 & 460CSL Amplifier Service Manual 22 Q42661-1 Output Module Parts List (P10137-1 Board) Q42661-1 Output Module (4 Resistor #2) for PB-1: CAPACITORS C01 C 3978-1 .047µF C02 C 6804-6 .1µF C03 C 6804-6 .1µF C04 C 3996-3 .0047µF C05 C 6807-9 .001µF C06 C 6806-1 .01µF C07 C 6807-9 .001µF C08 C 6810-3 180pF C09 C 6809-5 220pF DIOD ...
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Crown 460CSL - page 23
Power Base-1 & 460CSL Amplifier Service Manual 23 Q42718-9 Output Module (4 Resistor #3) for PB-1: CAPACITORS C01 C 3978-1 .047µF C02 C 3218-2 .22µF C03 C 3218-2 .22µF C04 C 8534-7 .0047µF C05 C 6807-9 .001µF C06 C 6806-1 .01µF C07 C 6807-9 .001µF C08 C 6810-3 180pF C09 C 6809-5 220pF DIODES D01 C 2851-1 1N4004 D02 C 2851-1 1N4004 D03 C ...
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Crown 460CSL - page 24
Power Base-1 & 460CSL Amplifier Service Manual 24 Q42885-6 Output Module Parts List (P10305-4 Board) Q42885-6 Output Module (4 Resistor TO-3P Drivers) for PB-1/460CSL: CAPACITORS C01 C 8511-5 .047µF C02 C 7964-7 .22µF C03 C 7964-7 .22µF C04 C 8534-7 .0047µF C05 C 6807-9 .001µF C06 C 6806-1 .01µF C07 C 6807-9 .001µF C08 C 6810-3 180pF C09 ...
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Crown 460CSL - page 25
Power Base-1 & 460CSL Amplifier Service Manual 25 Q42967-2 Output Module for Through Hole Chassis (THC) PB-1/460CSL units: CAPACITORS C01 C 8511-5 .047µF C02 C 7964-7 .22µF C03 C 7964-7 .22µF C04 C 8534-7 .0047µF C05 C 8534-7 .0047µF C06 C 6806-1 .01µF C07 C 6807-9 .001µF C08 C 6810-3 180pF C09 C 6809-5 220pF C43 C 6806-1 .01µF DIODES D ...
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Crown 460CSL - page 26
Power Base-1 & 460CSL Amplifier Service Manual 26 Q43200-7 Output Module (THC #2) for PB-1/460CSL Units: CAPACITORS C01 C 8511-5 .047µF C02 C 7964-7 .22µF C03 C 7964-7 .22µF C04 C 8534-7 .0047µF C05 C 8534-7 .0047µF C06 C 6806-1 .01µF C07 C 6807-9 .001µF C08 C 6810-3 180pF C09 C 6809-5 220pF C43 C 6806-1 .01µF DIODES D01 C 2851-1 1N4004 ...
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Crown 460CSL - page 27
Power Base-1 & 460CSL Amplifier Service Manual 27 Q42552A0 Main Module Parts List (D 6304B2 Board) Q42552A0 Main Module (Original) for PB-1: CAPACITORS C1 C 4303-1 1000uF C2 C 3913-8 470uF C3 C 4303-1 1000uF C4 C 6802-0 .47uF C100 C200 C 5053-1 18uF C101 C201 C 2821-4 10pF C103 C203 C 6805-3 .022uF C104 C204 C 6805-3 .022uF C105 C205 C 6950-7 8 ...
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Crown 460CSL - page 28
Power Base-1 & 460CSL Amplifier Service Manual 28 R114 R214 A10266-4721 4.7K R115 R215 A10266-5141 510K R116 R216 A10266-3351 3.3M R118 R218 A10266-2711 270 OHM R119 R219 A10266-3011 300 OHM R120 R220 A10266-2711 270 OHM R121 R221 C 5062-2 100K TRIMMER R122 R222 A10266-2741 270K R123 R223 A10266-1831 18K R124 R224 A10266-6821 6.8K R125 R225 C 7 ...
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Crown 460CSL - page 29
Power Base-1 & 460CSL Amplifier Service Manual 29 Q42664-5 Main Module Parts List (D 6910-0 Board) Q42664-5 Main Module (Service Replacement For Origi- nal) for PB-1: CAPACITORS C1 C 4303-1 1000uF C2 C 3913-8 470uF C3 C 4303-1 1000uF C4 C 6802-0 .47uF C100 C200 C 5311-3 22uF C101 C201 C 2821-4 10pF C103 C203 C 6805-3 .022uF C104 C204 C 6805-3 . ...
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Crown 460CSL - page 30
Power Base-1 & 460CSL Amplifier Service Manual 30 R110 R210 A10266-4731 47K R111 R211 A10266-1231 12K R112 R212 A10266-5131 51K R113 R213 A10266-4721 4.7K R114 R214 A10266-4721 4.7K R115 R215 A10266-5141 510K R116 R216 A10266-3351 3.3M R117 R217 A10266-4731 47K R118 R218 A10266-2711 270 OHM R119 R219 A10266-3011 300 OHM R120 R220 A10266-2711 27 ...
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Crown 460CSL - page 31
Power Base-1 & 460CSL Amplifier Service Manual 31 Q42682-7 Main Module Parts List (D 6910-0 Board) Q42682-7 Main Module (#2) for PB-1: CAPACITORS C1 C 4303-1 1000uF C2 C 3913-8 470uF C3 C 4303-1 1000uF C4 C 6802-0 .47uF C5 OPEN C6 OPEN C100 C200 C 5311-3 22uF C101 C201 C 2820-6 5pF C103 C203 C 6805-3 .022uF C104 C204 C 6805-3 .022uF C105 C205 C ...
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Crown 460CSL - page 32
Power Base-1 & 460CSL Amplifier Service Manual 32 RESISTORS R1 A10265-53621 53.6K 1% R2 OPEN R3 OPEN R4 A10265-46421 46.4K 1% R5 A10266-3323 3.3K 1W R1 0 OPEN R100 R200 C 7409-3 5K POT R101 R201 A10265-49911 4.99K R102 R202 A10266-1021 1K R103 R203 A10265-10031 100K 1% R104 R204 A10266-2721 2.7K R105 R205 A10266-2721 2.7K R106 R206 A10266-1231 ...
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Crown 460CSL - page 33
Power Base-1 & 460CSL Amplifier Service Manual 33 MISC. BOARD D 6910-0 MOUNTS U1, U2: (2) C 1889-2 6-32 NUT (2) C 2176-3 6-32 X .5 SCREW (2) C 5341-0 HEA TSINK (2) C 5594-4 ST AR W ASHER MOUNTS U104, U204: (2) C 3450-1 14 PIN SOCKET COVERS FOR J100, J200: (2) C 6778-2 Phone Jack Cover STRAIN RELIEF: (4) C 1811-6 CABLE TIE Q42682-7 Main Module P ...
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Crown 460CSL - page 34
Power Base-1 & 460CSL Amplifier Service Manual 34 Q42776-7 Main Module Parts List (D 7251-8 Board) Q42776-7 Main Module (3rd Gain) for PB-1: CAPACITORS C1 C 3913-8 470uF C2 C 3913-8 470uF C4 C 6802-0 .47uF C5 C 6806-1 .01uF C6 C 6806-1 .01uF C7 C 6094-9 33uF C8 C 6806-1 .01uF C100 C200 C 5311-3 22uF C101 C201 C 2820-6 5pF C103 C203 C 6805-3 .02 ...
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Crown 460CSL - page 35
Power Base-1 & 460CSL Amplifier Service Manual 35 Q116 Q216 C 3786-8 PN4250A Q117 Q217 D 2961-7 SEL 2N3859A Q118 Q218 D 2961-7 SEL 2N3859A Q119 Q219 C 3625-8 2N4125 Q120 Q220 C 3625-8 2N4125 Q121 Q221 C 7458-0 2N4123 Q122 Q222 C 7458-0 2N4123 RESISTORS R1 A10265-53621 53.6K R2 A10266-2402 24 O HM R3 A10266-2402 24 O HM R4 A10265-46421 46.4K R5 ...
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Crown 460CSL - page 36
Power Base-1 & 460CSL Amplifier Service Manual 36 INTERCONNECTS J1 C 7593-4 HEADER 5 PIN J2 C 4508-5 16 PIN SOCKET J9 C 7527-2 HEADER 6 PIN J10 C 7592-6 HEADER 4 PIN J11 C 7526-4 HEADER 3 PIN J100 J200 C 6777-4 PHONE JACK J500 J800 D 6619-7 10" RIBBON ASSY J600 J700 D 6620-5 6" RIBBON ASSY MISC. BOARD D 7251-8 MOUNTS U1, U2: (2) C 188 ...
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Crown 460CSL - page 37
Power Base-1 & 460CSL Amplifier Service Manual 37 Q42953-2 PB-1 Main Module 3rd Gain Stage and Improved offset (Original 460CSL Main Module.): CAPACITORS C1 C 3913-8 470µF C2 C 3913-8 470µF C4 C 6802-0 .47µF C5 C 6806-1 .01µF C6 C 6806-1 .01µF C7 C 6094-4 33µF 16V C8 C 6806-1 .01µF C100 C200 C 5311-3 22µF C101 C201 C 2820-6 5pF C103 C20 ...
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Crown 460CSL - page 38
Power Base-1 & 460CSL Amplifier Service Manual 38 RESISTORS N100 N200 D 4669-4 CMR Trim Network N101 N201 D 6081-0 Resistor Network N102 N202 D 6082-8 Resistor Network R1 A10265-53621 53.6K 1% R2 C 7340-0 24 5W R3 C 7340-0 24 5W R4 A10265-46421 46.4K 1% R5 A10266-3321 3.3K R11 A10266-5621 5.6K R12 A10266-4331 43K R13 A10266-1021 1K R14 A10266-8 ...
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Crown 460CSL - page 39
Power Base-1 & 460CSL Amplifier Service Manual 39 MISC. Board D 7251-8 Blank PC Board Socket C 3450-1 14 Pin U104/204 Nut A10102-5 Hex 6-32 Heatsink C 5341-0 TO-220 Torq Sprdr C 6541-4 Washer C 8973-7 #6, Split Screw C 9067-7 Stainless J1 C 7593-4 5 Pin Header J2 C 4508-5 16 Pin Socket J9 C 7527-2 6 Pin Header J10 C 7592-6 4 Pin Header J11 C 75 ...
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Crown 460CSL - page 40
Power Base-1 & 460CSL Amplifier Service Manual 40 Q43060-5 Applicability: Main Module for Through Hole Chassis (THC) PB-1/460CSL units. CAPACITORS C1 C 4303-1 1000µF C2 C 3913-8 470µF C4 C 6802-0 .47µF C5 C 6806-1 .01µF C6 C 6806-1 .01µF C7 C 8897-8 .1µF C100 C200 C 5311-3 22µF C101 C201 C 2821-4 10pF C103 C203 C 6805-3 .022µF C104 C204 ...
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Crown 460CSL - page 41
Power Base-1 & 460CSL Amplifier Service Manual 41 Q43060-5 Main Module Parts List (D 7993-5 Board) Q119 Q219 C 3625-8 NPN 2N4125 Q120 Q220 C 3625-8 NPN 2N4125 Q121 Q221 C 7458-0 NPN 2N4123 Q122 Q222 C 7458-0 NPN 2N4123 Q123 Q223 C 7458-0 NPN 2N4123 Q124 Q224 C 3625-8 NPN 2N4125 RESISTORS N101 N201 D 6081-0 Network Package N102 N202 D 6082-8 Net ...
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Crown 460CSL - page 42
Power Base-1 & 460CSL Amplifier Service Manual 42 Q43060-5 Main Module Parts List (D 7993-5 Board) R191 R291 A10266-3331 33K R192 R292 A10266-1031 10K R193 R293 A10266-1031 10K R194 R294 A10266-1041 100K R195 R295 A10266-3021 3K R196 R296 A10266-4721 4.7K R197 R297 A10266-1031 10K R198 R298 A10266-4721 4.7K R199 R299 A10266-1031 10K R909 R1009 ...
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