McIntosh-MS750-ms-sm 维修电路原理图.pdf

Performance Specifi cations .2Notes .2Safety Information .2Rear Panel .3Section Location .3Block Diagram .4Interconnection Diagram .5Front Panel Schematic and PCB . 7 - 10Parts List .11Repacking List .17CONTENTSSERIAL NO. XU1001 And AboveMS750MUSIC SERVERSERVICE MANUALSerial Number XU1001 And AboveRadioFans.CN 收音机爱 好者资料库21. Unless otherwise noted, all voltages indicated on the schematics are measured under the following conditions: a. AC input at 120 volts, 50/60Hz. b. All voltages are +/-10% with respect to ground. A high impedance (10 megaohm) voltmeter must be used.2. Unless otherwise specifi ed: a. Resistor values are in ohms. b. Capacitor values are microfarads (uF). c. Inductor values are in microhenries (uH)3. On PC board drawings, Square pad indicates: a. Polarized Capacitors - Positive b. Diodes - Cathode c. Others - Pin 14. WARNING Parts marked with the symbol have critical characteristics. Use only replacement parts recom- mended by the manufacturer.5. Use McIntosh Remote Control Model HR063 with the MS750.NOTESSAFETY INFORMATIONPERFORMANCE SPECIFICATIONSCAUTION: Invisible Laser Radiation when open. DO NOT stare into the beam or view directly with optical instruments. Use of controls or adjustments or performance of procedures other than those specifi ed in the Owners Manual may result in Hazardous Radiation Exposure. Servicing of laser mechanism is to be performed at the service facility at McIntosh Laboratory Inc.This product incorporates an embedded CLASS 3B Laser (IEC60825-1).Digital Signal Format Sampling Frequency: 44.1kHzPower Requirements100 Volts, 50/60Hz at 60 watts110 Volts, 50/60Hz at 60 watts120 Volts, 50/60Hz at 60 watts220 Volts, 50/60Hz at 60 watts230 Volts, 50/60Hz at 60 watts240 Volts, 50/60Hz at 60 wattsNote Refer to the rear panel of the MS750 for the correct voltage.Overall DimensionsWidth is 17-1/2 inches (44.45cm)Height is 6 inches (15.24cm)Depth is 15-7/8 inches (40.32cm)Note When the Disc Tray is opened, the panel clearance required in front of mounting panel is 6-3/4 inches (17.2cm).Weight28.1 pounds (12.8Kg) net, 44.5 pounds (20.2Kg) in shipping cartonShipping Carton DimensionsWidth is 26-1/2 inches (67.3cm)Depth is 24-1/4 inches (62.2cm)Height is 11-3/4 inches (29.9cm)Audio Specifi cationsOutput Level 2.0VrmsOutput Impedance 200 ohmsAudio Frequency Response 2Hz to 22,000Hz 1dBSignal to Noise Ratio 102dB (IHF A-Weighted)Dynamic Range 96dBHarmonic Distortion 0.01%Channel Separation 95dB (1,000Hz)Video Specifi cationsSignal System NTSC/PALComponent Video Output LevelY Output Level 1.0Vp-p (75 OHM)PB/CB Output Level 0.648Vp-p (75 OHM)PR/CR Output Level 0.7Vp-p (75 OHM)S-Video Y Output Level 1Vp-p (75 OHM)S-Video C Output Level 0.286Vp-p (75 OHM) (NTSC)Composite Video Output Level 1Vp-p (75 OHM)General Specifi cationsDigital OutputOptical: -15dbm to -21dbmCoaxial: 0.4V p-p to 0.6V p-p /75 ohmCOMPLIES WITH DHHS RULES21 CFR 1040.10 AND 1040.11RadioFans.CN 收音机爱 好者资料库REAR PANELSECTION LOCATIONSTOP VIEW WITH COVER REMOVEDMS7503NOTES4INTERCONNECT15MS750NOTES67MS750FRONT PANEL 750621 SCH108MS750FRONT PANEL 750621 PCB10910PCB1 PC BD DISPLAY 129806Q1 TRANSISTOR PNP SILICON 132304Q2 TRANSISTOR PNP SILICON 132304Q3 TRANSISTOR PNP SILICON 132304Q4 TRANSISTOR PNP SILICON 132304Q7 TRANSISTOR PNP SILICON 132304Q8 TRANSISTOR NPN SILICON 132317R1 RES MF 2.21K 1% 1/4W 144584R2 RES MF 221 OHM 1% 1/4W 144559R3 RES MF 221 OHM 1% 1/4W 144559R4 RES MF 221 OHM 1% 1/4W 144559R5 RES MF 324 OHM 1% 1/4W 144597R6 RES MF 10K 1% 1/4W 144504R7 RES MF 100 OHM 1% 1/4W 144568R8 RES MF 100 OHM 1% 1/4W 144568R9 RES MF 100 OHM 1% 1/4W 144568R10 RES MF 100 OHM 1% 1/4W 144568R11 RES MF 1K 1% 1/4W 144513R12 RES MF 1K 1% 1/4W 144513S1 SWITCH TACT 150058S2 SWITCH TACT 150058S3 SWITCH TACT 150058S4 SWITCH TACT 150058S5 SWITCH TACT 150058S6 SWITCH TACT 150058S7 SWITCH TACT 150058S8 SWITCH TACT 150058S9 SWITCH TACT 150058S10 SWITCH TACT 150058S11 SWITCH TACT 150058S12 SWITCH TACT 150058S13 SWITCH TACT 150058S14 SWITCH TACT 150058S15 SWITCH TACT 150058S16 SWITCH TACT 150058S17 SWITCH TACT 150058(DS1) LED SPACER .220 LENGTH 163001(DS2) LED SPACER .220 LENGTH 163001(DS3) LED SPACER .220 LENGTH 163001(DS4) LED SPACER .220 LENGTH 163001 C/A DISPLAY 14-1 X 2.0 171823 SCR TS 2-32 X 1/4 PH PN TYPE B 401161 NOTE:Modules not available as replacement parts. If defect is sus-pected in these modules, contact factory for service options.PARTS LIST2345678910MS75011Ref. No. Description Part No.320243 MAIN PCB750822 CHASSIS POWER SUPPLY PCBRef. No. Description Part No. DIODE RECTIFIER 1N4007 070178 FUSE T3 12AH25OV PCB MOUNT 089144 DECAL FUSE T3.15AH 166304 POWER SUPPLY SWITCH MODE 75W 320247320256 SERIAL RS232 PCBSee Note320245 AUDIO EXPANSION PCBSee Note320255 SPDIF PCBSee Note320252 S LINK PCBSee Note320244 CD ROM PCBSee Note320242 HARD DRIVESee Note750621 FRONT PANEL PCBRef. No. Description Part No.C1 CAP MONO .1UF 50V 20% Z5U 061346D1 DIODE SILICON 070174D2 DIODE SILICON 070174D3 DIODE SILICON 070174DS1 LED SQUARE RED 058109DS2 LED SQUARE RED 058109DS3 LED SQUARE RED 058109DS4 LED SQUARE RED 058109DS5 LED GRN 5MM HI-INTENSITY 058165(DS5) SPACER LED 112108DS6 LED GRN 5MM HI-INTENSITY 058165(DS6) SPACER LED 112108DS7 LED GRN 5MM HI-INTENSITY 058165(DS7) SPACER LED 112108DS8 LED GRN 5MM HI-INTENSITY 058165(DS8) SPACER LED 112108DS9 DISPLAY VFD 2X20 CHAR 5X8 DOT 058181DS9 TERMINAL STRIP 14 PIN .025 SQ 117647 TUBING SHRINK 1/4ID BLK 077041J1 CONN HEADER SHROUDED 1 X 14 117920J2 CONN HEADER SHROUDED 1 X 14 117920J3 CONN HEADER STRAIGHT 1 X 5 117874J4 TERMINAL STRIP 14 PIN .025 SQ 117647J5 CONN HEADER STRAIGHT 1 X 5 117874MT1 SENSOR IR 38KHZ 121046NOTES12REPACKING INSTRUCTIONS13MS750The continuous improvement of its products is the policy of McIntosh Laboratory Incorporated, who reserve the right to improve design without notice. Because of the constant upgrading of McIntosh products circuitry and components, the Company cannot insure, and does not warrant, the accuracy 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 041106SERIAL NO. XU1001 And AboveMS750MUSIC SERVER