Crown POWER BASE 1 Service Manual Page 1

Power Base-3 & 1400CSL Amplifier Service Manual1POWER BASE ™-3 & 1400CSL™POWER AMPLIFIERSERVICE MANUALK-SVCPB36-95CSL™ and Power Base™ are tra

Power Base-3 & 1400CSL Amplifier Service Manual10ultra low distortion in the signal zero-crossing regionand high efficiency.High Side (HS)The High

Power Base-3 & 1400CSL Amplifier Service Manual11In other words, the high voltage power supply floatswith respect to ground, but ±Vcc remain const

Power Base-3 & 1400CSL Amplifier Service Manual12TheoryNEGATIVELOW SIDEOUTPUTPNP STAGEPOSITIVELOW SIDEOUTPUTNPN STAGENEGATIVEHIGH SIDEOUTPUTPNP ST

Power Base-3 & 1400CSL Amplifier Service Manual13Electrical Checkout ProceduresGENERAL INFORMATIONThe following test procedures are to be used to

Power Base-3 & 1400CSL Amplifier Service Manual14TEST 6: VOLTAGE GAINSpec 26dB Gain: ±3%.Spec 0.775V Sensitivity: ±6%.Spec 1.4V Sensitivity: +12%/

Power Base-3 & 1400CSL Amplifier Service Manual15Electrical Checkout ProceduresTEST 14: ODEP LIMITINGSpec: No oscillation on ODEP Limiting wave fo

Power Base-3 & 1400CSL Amplifier Service Manual16Parts List (Non-Module)SUPPLIMENTAL ITEMSCPN ITEM QTYD 4137-2 Nylon Thumbscrew Washer 4C 3342-0 F

Power Base-3 & 1400CSL Amplifier Service Manual17Parts List (Non-Module)OUTPUT ASSEMBLY (ONE PER CHANNEL)CPN ITEM QTY (PER CHANNEL)C 8187-4 NPN Ou

Power Base-3 & 1400CSL Amplifier Service Manual18Parts List (Non-Module)MAIN CHASSIS ASSEMBLYCPN ITEM QTYA10086-70806 Screw, 8-32 x .37 RDHD Ph 2A

Power Base-3 & 1400CSL Amplifier Service Manual19Module InformationMODULE HISTORYThe PB-3 and 1400CSL amplifiers were introduced inJanuary of 1995

Power Base-3 & 1400CSL Amplifier Service Manual2À PRÉVENIR LE CHOCÉLECTRIQUE N’ENLEVEZPAS LES COUVERTURES.RIEN DES PARTIESUTILES À L’INTÉRIEUR.DÉB

Power Base-3 & 1400CSL Amplifier Service Manual20Q43339-3 Output Module Parts List (P10429-2 Board)Q43339-3 Output Module for PB-3:CAPACITORSC01 C

Power Base-3 & 1400CSL Amplifier Service Manual21Q43353-4 Applicability: Main Module PB-3/1400CSL units.For Schematic See J0659-3.CAPACITORSC1 C 3

Power Base-3 & 1400CSL Amplifier Service Manual22Q43353-4 Main Module Parts List Cont. (D 8679-9 Board)Q106 Q206 C 3625-8 NPN 2N4125Q107 Q207 C 37

Power Base-3 & 1400CSL Amplifier Service Manual23Q43353-4 Main Module Parts List Cont. (D 8679-9 Board)R164 R264 A10266-4711 470R165 R265 A10266-4

Power Base-3 & 1400CSL Amplifier Service Manual24Q43400-3 PB-3, 1400CSL MAIN MODULECAPACITORSC1 C 3913-8 470µFC2 C 3913-8 470µFC4 C 6802-0 .47µF

Power Base-3 & 1400CSL Amplifier Service Manual25NETWORK RESISTORSN101A N201A A10265-68111 6.81K 1%N101B N201B A10265-32421 32.4K 1%N101C N201C A1

Power Base-3 & 1400CSL Amplifier Service Manual26R145 R245 A10266-4711 470R146 R246 A10266-1231 12KR147 R247 C 8836-6 100 .5W FPR148 R248 A10266-2

Power Base-3 & 1400CSL Amplifier Service Manual27Q43400-3 Main Module Parts List Cont. (D 8827-4)U102 U202 C 4345-2 LM339U103 U203 C 6910-1 UPA76U

Power Base-3 & 1400CSL Amplifier Service Manual3Introduction ...4Scope...

Power Base-3 & 1400CSL Amplifier Service Manual4CrownTechnical Support GroupFactory ServiceParts DepartmentMailing Address:PO Box 1000Elkhart, IN

Power Base-3 & 1400CSL Amplifier Service Manual5Parts Informationshipment on a C.O.D. or pre-payment (check or creditcard) basis.TERMSNormal terms

Power Base-3 & 1400CSL Amplifier Service Manual6SpecificationsUnless noted otherwise, all specifications are basedon driving an 8 ohm load per cha

Power Base-3 & 1400CSL Amplifier Service Manual7Voltage ConversionNote: The only versions of thisproduct produced at the CrownFactory with interna

Power Base-3 & 1400CSL Amplifier Service Manual8TheoryOVERVIEWIt should be noted from the outset that the PB-3 and1400CSL amplifiers are electrica

Power Base-3 & 1400CSL Amplifier Service Manual9Theoryoutput of the amplifier at 26 dB. Diodes preventoverdriving the Error Amp. Because the Error