AUDIO TELEX DCM250 User Manual

Australian Monitor 1 Clyde Street, Silverwater NSW 2128 Australia +61 2 9647 1411 www.australianmonitor.com.au SERVICE INFORMATION AU

II. FINAL TESTING (This setup should have signal input to Amplifier through female (XLR) (The limiter link should be out of circuit initially.) 1

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1 2 3 4 5 6 78ABCD87654321DCBATitleNumber RevisionSizeA3Date: 7-May-2003 Sheet of File: C:\DCM Manuals\CD6201-21.DDB Drawn By:R42B10RR39B4K7R370RD

1 2 3 4 5 6 78ABCD87654321DCBATitleNumber RevisionSizeA3Date: 6-May-2003 Sheet of File: C:\Protel Files\CDTRAX\CD6200-14.DDBDrawn By:VDDP410KVDDR5

1 2 3 4 5 6 78ABCD87654321DCBATitleNumber RevisionSizeA3Date: 6-May-2003 Sheet of File: C:\DCM Manuals\CD6203-2.DDB Drawn By:C80.15uS1F310AF16.3A

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DCM250 Output Stage Component ListDesignator Part Type DescriptionC1A 820P Multi layer Ceramic capacitorC1B 820P Multi layer Ceramic capacitorD1A 1N40

R3B 220R Resistor, metal film .5WR40 1K Resistor, metal film .5WR40B 1K Resistor, metal film .5WR41 80DR41A 100DR42B 10R Resistor, metal film .5WR4A 1

DCM Series Drive Stage Component ListDesignator Part Type DescriptionC1 2u2 Electrolytic Capacitor 35VC10 2u2 Electrolytic Capacitor 35VC11 22u Electr

LK2 0R Link, zero ohmsLK3 0R Link, zero ohmsLK4 0R Link, zero ohmsLK6 0R Link, zero ohmsP1 2K Cermet, preset HorizontalP2 47K Potentiometer 16mm P4 10

T1A RF2285A Driver TransformerT1B RF2285B Driver TransformerV1 BC639 Transistor TO92V2 BC639 Transistor TO92V3 BC546 Transistor TO92V4 BC556 Transisto

DCM250,250 Watt Power AmplifierProduct DescriptionThe DCM250 is a 250 watt power amplifier in a two rack unit (2RLI) chassis suitable for table or di

Amplifier Status Display WindOw: The status displaywindowhighlights the operating conditions of the DCM250.Please refer to Figure #l on the back page

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DCM Series Circuit Description The DCM series are power amplifiers designed for commercial installations. They can be used for either low impedance (

The thermal cutout and fan is controlled by a microprocessor (PIC12C509A). The temperature is sensed using a 10k@25degC NTC. The fan is normally off a

DCM120 – 80 ohms DCM250 – 40 ohms DCM500 – 20 ohms XLR Audio Input and Parallel Output The DCM series includes both male and female 3 pin XLR connect

TESTING PROCEDURE OF DCM 120/DCM 250/DCM 500 I. PRE-TESTING (of complete sets). • Check 1.1 All screw for tightness (Bridge rectifier and tr