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Crown Audio 1200 Q42776-7Main Module D 7251-1board Parts List Cont, Integrated Circuits, Misc

Models: 1200

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Micro-Tech 1200 Amplifier Service Manual

Q42776-7 Main Module (D 7251-1 board) Parts List Cont.

INTEGRATED CIRCUITS

U1		C 5095-2	MC7815
U2		C 5096-0	MC7915
U100	U200	C 6911-9	UPA75 PNP
U103	U203	C 6910-1	UPA76 NPN
U104	U204	C 6900-2	MC34084P

CONNECTORS

J1		C 7593-4	HDR, 5 PIN
J2		C 4508-5	16 PIN Soc
J9		C 7527-2	HDR, 6 PIN
J10		C 7592-6	HDR, 4 PIN
J11		C 7526-4	HDR, 3 PIN
J100	J200	C 6777-4	PH. JACK
J500	J800	D 6619-7	10" Ribbon
J600	J700	D 6620-5	6" Ribbon

MISC

MOUNTS U1, U2:
(2)	C 1889-2	6-32 NUT
(2)	C 2176-3	6-32 X .5
(2)	C 5341-0	HEATSINK
(2)	C 5594-4	Star Wash.
MOUNTS U104, U204:
(2)	C 3450-1	14 Pin Skt.
COVERS FOR J100, J200:
(2)	C 6778-2	Ph. Jk. Cvr.
STRAIN RELIEF:
(4)	C 1811-6	Cable Tie

CIRCUIT BOARD:

D 7251-8

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Crown Audio 1200 Q42776-7Main Module D 7251-1board Parts List Cont, Integrated Circuits, Connectors, Misc, MC7815

Contents

Elkhart, IN U.S.A POWER AMPLIFIERMICRO-TECH-1200 Elkhart, IN U.S.AAVIS Table of Contents SCOPE WARRANTYIntroduction CrownPART NUMBERING SYSTEMS Parts InformationGENERAL INFORMATION STANDARD AND SPECIAL PARTSPERFORMANCE SpecificationsPOWER Power MECHANICALVoltage Conversion OVERVIEW FEATURESTheory FRONT END OPERATIONTheory VOLTAGE AMPLIFICATIONGROUNDED BRIDGE TOPOLOGY Last Voltage Amplifiers LVAsHigh Side HS TheoryLow Side LS OUTPUT DEVICE EMULATION PROTECTION ODEP TheoryTheory TEST 3 ODEP VOLTAGE ADJUSTMENT Electrical Checkout ProceduresTEST 2 OUTPUT BIAS ADJUSTMENT STANDARD INITIAL CONDITIONSTEST 12 OUTPUT POWER TEST 4 AC POWER DRAWTEST 7 PHASE RESPONSE TEST 5 COMMON MODE REJECTIONTEST 14 ODEP LIMITING TEST 16 SIGNAL TO NOISE RATIOTEST 13 REACTIVE LOADS TEST 15 LF PROTECTIONTEST 20 CLIPPING POST TESTINGTEST 19 INTERMODULATION DISTORTION Electrical Checkout ProceduresOUTPUT ASSEMBLY ONE PER CHANNEL Parts List Non-ModulePOWER SUPPLY SUPPLIMENTAL ITEMSCHASSIS FRONT ASSEMBLY OUTPUT ASSEMBLY CONTBACK PANEL ASSEMBLY MAIN CHASSIS ASSEMBLYParts List Non-Module MAIN CHASSIS ASSEMBLY CONTMODULE HISTORY Module and Schematic InformationSCHEMATIC INFORMATION MAIN MODULESM43534-3FUSE MODULE Fuse and Display Module Parts ListsM43530-1LED ASSEMBLY SUPPLY Q42866-6CHANNEL 2 FUSE MODULEDIODES Q42549-8Output Module P10115-7board Parts ListCAPACITORS INDUCTORSDIODES Q42647-0Output Module P10137-1board Parts ListCAPACITORS INDUCTORSDIODES Q42717-1Output Module P10233-8board Parts ListCAPACITORS INDUCTORSDIODES Q42871-6Output Module P10305-4board Parts ListCAPACITORS INDUCTORSDIODES Q42968-0Output Module P10341-9board Parts ListCAPACITORS INDUCTORSDIODES Q43202-3Output Module P10397-1board Parts ListCAPACITORS INDUCTORSDIODES RESISTOR NETWORKSCAPACITORS TRANSISTORSINTEGRATED CIRCUITS SWITCHESCONNECTORS MOUNTS U1, U2DIODES Q42714-8Main Module D 6910-0board Parts ListCAPACITORS RESISTOR NETWORKSCONNECTORS Q42714-8Main Module D 6910-0board Parts List ContSWITCHES INTEGRATED CIRCUITSDIODES Q42776-7Main Module D 7251-8board Parts ListCAPACITORS RESISTOR NETWORKSSWITCHES Q42776-7Main Module D 7251-1board Parts List ContRESISTORS INTEGRATED CIRCUITS Q42776-7Main Module D 7251-1board Parts List ContCONNECTORS MISCDIODES Q42980-5Main Module D7911-7board Parts ListCAPACITORS RESISTOR NETWORKSQ42980-5Main Module D7911-7board Parts List Cont RESISTORSCONNECTORS Q42980-5Main Module D7911-7board Parts List ContSWITCHES INTEGRATED CIRCUITSDIODES Q43035-7Main Module D7993-5board Parts ListCAPACITORS TRANSISTORSRESISTOR NETWORKS Q43035-7Main Module D7993-5board Parts List ContRESISTORS SWITCHES IC’SQ43035-7Main Module D7993-5board Parts List Cont MISCDIODES Q43031-6Main Module D7993-5board Parts ListCAPACITORS TRANSISTORSRESISTOR NETWORKS Q43031-6Main Module D7993-5board Parts List ContRESISTORS IC’S Q43031-6Main Module D7993-5board Parts List ContSWITCHES MISC