McIntosh-MS300-ms-sm 维修电路原理图.pdf

SERVICE MANUALPerformance Specifications . 2Notes . 2Safety Information . 2Rear Panel . 3Section Location . 3Block Diagram . 4Interconnection Diagram . 5Front Panel Schematic and PCB . 7 - 10Exploded View and Parts List . 11 - 12Parts List . 15Repacking List . 17CONTENTSMUSIC SERVERRadioFans.CN 收音机爱 好者资料库2Specifications are subject to change without notice.Please check the McIntosh web site for any changes tothe specifications.Audio SpecificationsFrequency Response:2 20,000Hz, +/-1 dBSignal to Noise Ratio:102dB (IHF A-Weighted)Dynamic Range:96dBHarmonic Distortion:0.01%Channel Separation:95dB (1,000Hz)Output Level:2.0 VrmsOutput Impedance:200 ohmsVideo SpecificationsSignal System:NTSC, PAL (Factory Option)Output Impedance:75 ohmGeneral SpecificationsDigital Output Optical:-15dbm to -21dbmDigital Output Coaxial:0.4Vpp to 0.6Vpp/75 ohmDigital Signal Format:44.1kHz Sampling FrequencyPower Requirements:100-240 Volts, 50-60Hz at 60 wattsOverall Dimensions:Width is 17-1/2 inches (44.45cm)Height is 5-3/8 inches (13.69cm)Depth is 15 inches (38.1cm)Note: When the disc tray is Opened, thepanel clearance required in front ofmounting panel is 5-1/4 inches (13.3cm)Weight:20.7 pounds (9.4Kg) net, 37.2 pounds(16.9Kg) in shipping carton1. Unless otherwise noted, all voltages indicated on theschematics are measured under the following conditions:a. AC input at 120 volts, 50/60Hz.b. All voltages are +/-10% with respect to ground. Ahigh impedance (10 megaohm) voltmeter must be used.3. Unless otherwise specified:a. Resistor values are in ohms.b. Capacitor values are microfarads (uF).c. Inductor values are in microhenries (uH).4. On PC board drawings, Square pad indicates:a. Polarized Capacitors - Positiveb. Diodes - Cathodec. Others - Pin 15. WARNINGParts marked with the symbol have criticalcharacteristics. Use only replacement parts recom-mended by the manufacturer.6. Use McIntosh Remote Control Model HR053 with theMS300.7. See Advanced Users Guide for Keyboard (050202)operation.NOTESSAFETY INFORMATIONPERFORMANCE SPECIFICATIONSCAUTION:Invisible Laser Radiation when open.DO NOT stare into the beam or viewdirectly with optical instruments. Useof controls or adjustments orperformance of procedures otherthan those specified in the OwnersManual may result in HazardousRadiation Exposure.This product incorporates an embedded CLASS 3B Laser (IEC60825-1).RadioFans.CN 收音机爱 好者资料库REAR PANELSECTION LOCATIONSTOP VIEW WITH COVER REMOVEDMS3003NOTES4INTERCONNECT1Part #320192Part #3202005NOTES67MS300FRONT PANEL 050177118MS300FRONT PANEL 05017711910EXPLODED VIEW AND PARTS LISTMS3001112NOTES1314320187 MAIN PCB320189 CHASSIS/POWER SUPPLY PCBSee Note320191 DISPLAY PCBSee Note320202 SERIAL RS232 PCBSee Note320204 AUDIO EXPANSION PCBSee Note320203 SPDIF PCBSee Note320208 IR DATA PCBSee Note320190 CD ROM PCBSee Note320186 HARD DRIVESee Note050177 FRONT PANEL PCBD1DIODE SILICON070047D2DIODE SILICON070047D3DIODE SILICON070047DS1LED SQUARE RED058109DS2LED SQUARE RED058109DS3LED SQUARE RED058109DS4LED SQUARE RED058109DS5LED GREEN 5MM HI-INT058165DS6LED GREEN 5MM HI-INT058165DS7LED GREEN 5MM HI-INT058165DS8LED GREEN 5MM HI-INT058165J1CONN HEADER SHROUDED 1X14 117875J2CONN HEADER SHROUDED 1X14 117875J3CONN HEADER 1X5 STRAIGHT117874J4CONN HEADER 1X5 STRAIGHT117874Q1TRANSISTOR PNP SILICON132172Q2TRANSISTOR PNP132224Q3TRANSISTOR PNP132224Q4TRANSISTOR PNP132224Q7TRANSISTOR PNP132224Q8TRANSISTOR NPN132223R1RES MF 2.21K 1% 1/4W144298R2RES MF 221 OHM 1% 1/4W144172R3RES MF 221 OHM 1% 1/4W144172R4RES MF 221 OHM 1% 1/4W144172R5RES MF 324 OHM 1% 1/4W144338R6RES MF 10K 1% 1/4W144053R7RES MF 100 OHM 1% 1/4W144196R8RES MF 100 OHM 1% 1/4W144196R9RES MF 100 OHM 1% 1/4W144196R10RES MF 100 OHM 1% 1/4W144196R11RES MF 1K 1% 1/4W144090R12RES MF 1K 1% 1/4W144090S1SWITCH PB TACT150058S2SWITCH PB TACT150059S3SWITCH PB TACT150059S4SWITCH PB TACT150059S5SWITCH PB TACT150058S6SWITCH PB TACT150058S7SWITCH PB TACT150058S8SWITCH PB TACT150058S9SWITCH PB TACT150059S10SWITCH PB TACT150058S11SWITCH PB TACT150058S12SWITCH PB TACT150059S13SWITCH PB TACT150058S14SWITCH PB TACT150058S15SWITCH PB TACT150059S16SWITCH PB TACT150058S17SWITCH PB TACT150059NOTE:Modules not available as replacement parts. If defect issuspected in these modules, contact factory for serviceoptions.PARTS LIST234567891011MS30015NOTES16REPACKING INSTRUCTIONS17MS300SERVICE MANUALThe continuous improvement of its products is the policy of McIntosh Laboratory Incorporated, who reserve the right to improve design withoutnotice. Because of the constant upgrading of McIntosh products circuitry and components, the Company cannot insure, and does not warrant, theaccuracy of the within schematic material, which is intended for information only.McINTOSH LABORATORY, INC., 2 CHAMBERS STREET, BINGHAMTON, NEW YORK 13903 Printed in U.S.A. Part Number 040XXXMUSIC SERVER