McIntosh-MS-750-Service-Manual 电路图 维修手册.pdf

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1、Performance Specifi cations .2 Notes .2 Safety Information .2 Rear Panel .3 Section Location .3 Block Diagram .4 Interconnection Diagram .5 Front Panel Schematic and PCB . 7 - 10 Parts List .11 Repacking List .17 CONTENTS SERIAL NO. XU1001 And Above MS750 MUSIC SERVER SERVICE MANUAL Serial Number XU

2、1001 And Above RadioFans.CN 收音机爱 好者资料库 2 1. 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. Unl

3、ess 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 1 4. WARNING Parts marked with the sym

4、bol have critical characteristics. Use only replacement parts recom- mended by the manufacturer. 5. Use McIntosh Remote Control Model HR063 with the MS750. NOTES SAFETY INFORMATION PERFORMANCE SPECIFICATIONS CAUTION: Invisible Laser Radiation when open. DO NOT stare into the beam or view directly wi

5、th 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 incorporat

6、es an embedded CLASS 3B Laser (IEC60825-1). Digital Signal Format Sampling Frequency: 44.1kHz Power Requirements 100 Volts, 50/60Hz at 60 watts 110 Volts, 50/60Hz at 60 watts 120 Volts, 50/60Hz at 60 watts 220 Volts, 50/60Hz at 60 watts 230 Volts, 50/60Hz at 60 watts 240 Volts, 50/60Hz at 60 watts N

7、ote Refer to the rear panel of the MS750 for the correct voltage. Overall Dimensions Width 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). Wei

8、ght 28.1 pounds (12.8Kg) net, 44.5 pounds (20.2Kg) in shipping carton Shipping Carton Dimensions Width 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 cations Output Level 2.0Vrms Output Impedance 200 ohms Audio Frequency Response 2Hz to 22,00

9、0Hz 1dB Signal to Noise Ratio 102dB (IHF A-Weighted) Dynamic Range 96dB Harmonic Distortion 0.01% Channel Separation 95dB (1,000Hz) Video Specifi cations Signal System NTSC/PAL Component Video Output Level Y Output Level 1.0Vp-p (75 OHM) PB/CB Output Level 0.648Vp-p (75 OHM) PR/CR Output Level 0.7Vp

10、-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 cations Digital Output Optical: -15dbm to -21dbm Coaxial: 0.4V p-p to 0.6V p-p /75 ohm COMPLIES WITH DHHS RULES 21 CFR 1040.10 AND 1040.11 Ra

11、dioFans.CN 收音机爱 好者资料库 REAR PANEL SECTION LOCATIONS TOP VIEW WITH COVER REMOVED MS750 3 RadioFans.CN 收音机爱 好者资料库 NOTES 4 INTERCONNECT1 5 MS750 NOTES 6 7 MS750 FRONT PANEL 750621 SCH10 8 MS750 FRONT PANEL 750621 PCB10 910 PCB1 PC BD DISPLAY 129806 Q1 TRANSISTOR PNP SILICON 132304 Q2 TRANSISTOR PNP SILI

12、CON 132304 Q3 TRANSISTOR PNP SILICON 132304 Q4 TRANSISTOR PNP SILICON 132304 Q7 TRANSISTOR PNP SILICON 132304 Q8 TRANSISTOR NPN SILICON 132317 R1 RES MF 2.21K 1% 1/4W 144584 R2 RES MF 221 OHM 1% 1/4W 144559 R3 RES MF 221 OHM 1% 1/4W 144559 R4 RES MF 221 OHM 1% 1/4W 144559 R5 RES MF 324 OHM 1% 1/4W 1

13、44597 R6 RES MF 10K 1% 1/4W 144504 R7 RES MF 100 OHM 1% 1/4W 144568 R8 RES MF 100 OHM 1% 1/4W 144568 R9 RES MF 100 OHM 1% 1/4W 144568 R10 RES MF 100 OHM 1% 1/4W 144568 R11 RES MF 1K 1% 1/4W 144513 R12 RES MF 1K 1% 1/4W 144513 S1 SWITCH TACT 150058 S2 SWITCH TACT 150058 S3 SWITCH TACT 150058 S4 SWITC

14、H TACT 150058 S5 SWITCH TACT 150058 S6 SWITCH TACT 150058 S7 SWITCH TACT 150058 S8 SWITCH TACT 150058 S9 SWITCH TACT 150058 S10 SWITCH TACT 150058 S11 SWITCH TACT 150058 S12 SWITCH TACT 150058 S13 SWITCH TACT 150058 S14 SWITCH TACT 150058 S15 SWITCH TACT 150058 S16 SWITCH TACT 150058 S17 SWITCH TACT

15、 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 th

16、ese modules, contact factory for service options. PARTS LIST 2 3 4 5 6 7 8 9 10 MS750 11 Ref. No. Description Part No. 320243 MAIN PCB 750822 CHASSIS POWER SUPPLY PCB Ref. No. Description Part No. DIODE RECTIFIER 1N4007 070178 FUSE T3 12AH25OV PCB MOUNT 089144 DECAL FUSE T3.15AH 166304 POWER SUPPLY

17、SWITCH MODE 75W 320247 320256 SERIAL RS232 PCB See Note 320245 AUDIO EXPANSION PCB See Note 320255 SPDIF PCB See Note 320252 S LINK PCB See Note 320244 CD ROM PCB See Note 320242 HARD DRIVE See Note 750621 FRONT PANEL PCB Ref. No. Description Part No. C1 CAP MONO .1UF 50V 20% Z5U 061346 D1 DIODE SIL

18、ICON 070174 D2 DIODE SILICON 070174 D3 DIODE SILICON 070174 DS1 LED SQUARE RED 058109 DS2 LED SQUARE RED 058109 DS3 LED SQUARE RED 058109 DS4 LED SQUARE RED 058109 DS5 LED GRN 5MM HI-INTENSITY 058165 (DS5) SPACER LED 112108 DS6 LED GRN 5MM HI-INTENSITY 058165 (DS6) SPACER LED 112108 DS7 LED GRN 5MM

19、HI-INTENSITY 058165 (DS7) SPACER LED 112108 DS8 LED GRN 5MM HI-INTENSITY 058165 (DS8) SPACER LED 112108 DS9 DISPLAY VFD 2X20 CHAR 5X8 DOT 058181 DS9 TERMINAL STRIP 14 PIN .025 SQ 117647 TUBING SHRINK 1/4ID BLK 077041 J1 CONN HEADER SHROUDED 1 X 14 117920 J2 CONN HEADER SHROUDED 1 X 14 117920 J3 CONN

20、 HEADER STRAIGHT 1 X 5 117874 J4 TERMINAL STRIP 14 PIN .025 SQ 117647 J5 CONN HEADER STRAIGHT 1 X 5 117874 MT1 SENSOR IR 38KHZ 121046 NOTES 12 REPACKING INSTRUCTIONS 13 MS750 The continuous improvement of its products is the policy of McIntosh Laboratory Incorporated, who reserve the right to improv

21、e 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 041106 SERIAL NO. XU1001 And Above MS750 MUSIC SERVER