Power Base-1 & 460CSL Amplifier Service Manual1POWER BASE-1® & 460CSL™POWER AMPLIFIERSERVICE MANUALK-SVCPB11-95CSL™ is a trademark and Power B
Power Base-1 & 460CSL Amplifier Service Manual10allows the NFb loop to control Error Amp gain byfeeding back to its non-inverting input (with its
Power Base-1 & 460CSL Amplifier Service Manual11the positive half, and about .5V across the bias resistorin the negative half. Q18 conduction (and
Power Base-1 & 460CSL Amplifier Service Manual12Theory±ODEP circuitry is used to simulate the thermal barri-ers between the interior of the output
Power Base-1 & 460CSL Amplifier Service Manual13Checkout ProceduresGENERAL INFORMATIONThe following test procedures are to be used to verifyoperat
Power Base-1 & 460CSL Amplifier Service Manual14TEST 4: AC POWER DRAWSpec: 90 Watts maximum quiescent.Initial Conditions: Controls per standard.Pr
Power Base-1 & 460CSL Amplifier Service Manual15Checkout ProceduresProcedure Capacitive: Load each channel to 8 ohms inparallel with 2 µF. Inject
Power Base-1 & 460CSL Amplifier Service Manual16Checkout Procedures
Power Base-1 & 460CSL Amplifier Service Manual17Mechanical (Non-Module) PartsSUPPLIMENTAL ITEMSCPN ITEM QTYD 4137-2 Nylon Thumbscrew Washer 4C 334
Power Base-1 & 460CSL Amplifier Service Manual18Mechanical (Non-Module) PartsOUTPUT ASSEMBLY (ONE PER CHANNEL)CPN ITEM QTYA10100-4 Washer, #6 Flat
Power Base-1 & 460CSL Amplifier Service Manual19Mechanical (Non-Module) PartsMAIN CHASSIS ASSEMBLYCPN ITEM QTYA10086-11008 Screw, 10-32-.5 Mach Rd
Power Base-1 & 460CSL Amplifier Service Manual2À PRÉVENIR LE CHOCÉLECTRIQUE N’ENLEVEZPAS LES COUVERTURES.RIEN DES PARTIESUTILES À L’INTÉRIEUR.DÉBR
Power Base-1 & 460CSL Amplifier Service Manual20Module InformationMODULE HISTORYSince its introduction in 1986, the PB-1 has gonethrough a number
Power Base-1 & 460CSL Amplifier Service Manual21Q42576-1 Output Module Parts List (P10137-1 Board)Q42576-1 Output Module (4 Resistor Original) for
Power Base-1 & 460CSL Amplifier Service Manual22Q42661-1 Output Module Parts List (P10137-1 Board)Q42661-1 Output Module (4 Resistor #2) for PB-1:
Power Base-1 & 460CSL Amplifier Service Manual23Q42718-9 Output Module (4 Resistor #3) for PB-1:CAPACITORSC01 C 3978-1 .047µFC02 C 3218-2 .22µFC03
Power Base-1 & 460CSL Amplifier Service Manual24Q42885-6 Output Module Parts List (P10305-4 Board)Q42885-6 Output Module (4 Resistor TO-3P Drivers
Power Base-1 & 460CSL Amplifier Service Manual25Q42967-2 Output Module for Through Hole Chassis (THC)PB-1/460CSL units:CAPACITORSC01 C 8511-5 .047
Power Base-1 & 460CSL Amplifier Service Manual26Q43200-7 Output Module (THC #2) for PB-1/460CSL Units:CAPACITORSC01 C 8511-5 .047µFC02 C 7964-7 .2
Power Base-1 & 460CSL Amplifier Service Manual27Q42552A0 Main Module Parts List (D 6304B2 Board)Q42552A0 Main Module (Original) for PB-1:CAPACITOR
Power Base-1 & 460CSL Amplifier Service Manual28R114 R214 A10266-4721 4.7KR115 R215 A10266-5141 510KR116 R216 A10266-3351 3.3MR118 R218 A10266-271
Power Base-1 & 460CSL Amplifier Service Manual29Q42664-5 Main Module Parts List (D 6910-0 Board)Q42664-5 Main Module (Service Replacement For Orig
Power Base-1 & 460CSL Amplifier Service Manual3Introduction ...4Scope...
Power Base-1 & 460CSL Amplifier Service Manual30R110 R210 A10266-4731 47KR111 R211 A10266-1231 12KR112 R212 A10266-5131 51KR113 R213 A10266-4721 4
Power Base-1 & 460CSL Amplifier Service Manual31Q42682-7 Main Module Parts List (D 6910-0 Board)Q42682-7 Main Module (#2) for PB-1:CAPACITORSC1 C
Power Base-1 & 460CSL Amplifier Service Manual32RESISTORSR1 A10265-53621 53.6K 1%R2 OPENR3 OPENR4 A10265-46421 46.4K 1%R5 A10266-3323 3.3K 1WR10 O
Power Base-1 & 460CSL Amplifier Service Manual33MISC.BOARD D 6910-0MOUNTS U1, U2:(2) C 1889-2 6-32 NUT(2) C 2176-3 6-32 X .5 SCREW(2) C 5341-0 HEA
Power Base-1 & 460CSL Amplifier Service Manual34Q42776-7 Main Module Parts List (D 7251-8 Board)Q42776-7 Main Module (3rd Gain) for PB-1:CAPACITOR
Power Base-1 & 460CSL Amplifier Service Manual35Q116 Q216 C 3786-8 PN4250AQ117 Q217 D 2961-7 SEL 2N3859AQ118 Q218 D 2961-7 SEL 2N3859AQ119 Q219 C
Power Base-1 & 460CSL Amplifier Service Manual36INTERCONNECTSJ1 C 7593-4 HEADER 5 PINJ2 C 4508-5 16 PIN SOCKETJ9 C 7527-2 HEADER 6 PINJ10 C 7592-6
Power Base-1 & 460CSL Amplifier Service Manual37Q42953-2 PB-1 Main Module 3rd Gain Stage and Improvedoffset (Original 460CSL Main Module.):CAPACIT
Power Base-1 & 460CSL Amplifier Service Manual38RESISTORSN100 N200 D 4669-4 CMR Trim NetworkN101 N201 D 6081-0 Resistor NetworkN102 N202 D 6082-8
Power Base-1 & 460CSL Amplifier Service Manual39MISC.Board D 7251-8 Blank PC BoardSocket C 3450-1 14 Pin U104/204Nut A10102-5 Hex 6-32Heatsink C 5
Power Base-1 & 460CSL Amplifier Service Manual4CrownTechnical Support GroupFactory ServiceParts DepartmentMailing Address:PO Box 1000Elkhart, IN
Power Base-1 & 460CSL Amplifier Service Manual40Q43060-5 Applicability: Main Module for Through HoleChassis (THC) PB-1/460CSL units.CAPACITORSC1 C
Power Base-1 & 460CSL Amplifier Service Manual41Q43060-5 Main Module Parts List (D 7993-5 Board)Q119 Q219 C 3625-8 NPN 2N4125Q120 Q220 C 3625-8 NP
Power Base-1 & 460CSL Amplifier Service Manual42Q43060-5 Main Module Parts List (D 7993-5 Board)R191 R291 A10266-3331 33KR192 R292 A10266-1031 10K
Power Base-1 & 460CSL Amplifier Service Manual5Partsshipment on a C.O.D. or pre-payment (check or creditcard) basis.TERMSNormal terms are pre-paid
Power Base-1 & 460CSL Amplifier Service Manual6SpecificationsUnless noted otherwise, all specifications are basedon driving an 8 ohm load per chan
Power Base-1 & 460CSL Amplifier Service Manual7Voltage ConversionNote: The only versions of thisproduct produced at the CrownFactory with internat
Power Base-1 & 460CSL Amplifier Service Manual8TheoryOVERVIEWIt should be noted from the outset that the PB-1 and460CSL amplifiers are electricall
Power Base-1 & 460CSL Amplifier Service Manual9Theorytivity is achieved by controlling the ratio of feedback toinput resistance. The Sensitivity S
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