McIntosh-MA5100-pwr-sm维修电路原理图.pdf
《McIntosh-MA5100-pwr-sm维修电路原理图.pdf》由会员分享,可在线阅读,更多相关《McIntosh-MA5100-pwr-sm维修电路原理图.pdf(12页珍藏版)》请在收音机爱好者资料库上搜索。
1、MA 5100 PREAMP - AMPLIFIER SERVICE INFORMATION S T A R T I N G W I T H S E R I A L N O . 21HOO MclNTOSH LABORATORY INC. 2 CHAMBERS STREET BINGHAMTON, NEW YORK MA 5100 RadioFans.CN 收音机爱 好者资料库 MA 5100 ELECTRICAL SPECIFICATIONS Power Output: 90 watts RMS continuous, 45 watts per channel operating simul
2、taneously into 4 ohm or 8 ohm loads. 60 watts RMS continuous, 30 watts per channel operating simultaneously into 16 ohm loads. Harmonic Distortion: Less than 0.25% at rated power output from 20Hz to 20,000Hz with both chan- nels operating. Intermodulation Distortion: Less than 0.25% for any combinat
3、ion of frequencies from 2QHz to 20,000Hz if instantaneous peak power is 90 watts per channel or less into 4 or 8 ohm loads and 60 watts per channel or less into 16 ohm loads with both channels operating. Frequency Range: At rated output both channels: 0.5dB 20Hz through 20,000Hz. Output Impedance: 4
4、 ohm, 8 ohm, 16 ohm. No impedance switching required. Internal Impedance/Damping: Less than .04 ohms; damping factor greater than 100. Input Sensitivity And Impedance: Auxiliary, Tape, Tuner, and Tape Monitor: 300mV, 250K ohms. Phono 1 and Phono 2: 2mV, 47,000 ohms. Tape Head: 2mV, 1/2 megohm. Hum A
5、nd Noise: High Level Inputs: 75dB below rated output. Low Level Inputs: 70dB below 10mV input. Power Amplifier: 90dB below rated output. Tape Output: 300mV at rated sensitivity, 1.4 volts with 10mV at phono input. Left Plus Right Output: Adjustable 0 to 6 volts from generator impedance of less than
6、5,000 ohms. Bass Controls: +18dB at 20Hz. Treble Controls: +l8dB at 20,000Hz. HF Filter: Flat, or 5,000Hz cutoff. LP Filter: Plat, or 50Hz cutoff. Power Requirements; 117 volts AC, 50-60Hz, 70 watts at zero signal output, 200 watts at rated output. RadioFans.CN 收音机爱 好者资料库 MA 5100 BLOCK DIAGRAM MA 51
7、00 RadioFans.CN 收音机爱 好者资料库 MA 5100 PREAMP. SECTION PRINTED CIRCUIT BOARD 043-989 RadioFans.CN 收音机爱 好者资料库 PREAMP. SECTION MA 5100 154-411 HEAVY LINE SHOWS PRIMARY SIGNAL PATH RadioFans.CN 收音机爱 好者资料库 POWER OUTPUT SECTION MA 5100 154-376 HEAVY LINE SHOWS PRIMARY SIGNAL PATH RadioFans.CN 收音机爱 好者资料库 MA 5
8、100 OUTPUT MONITOR PRINTED CIRCUIT BOARD 043-821 ( NOTE 1 ) LEFT CHANNEL POWER OUTPUT SECTION PRINTED CIRCUIT BOARD 043-919 RIGHT CHANNEL POWER OUTPUT SECTION PRINTED CIRCUIT BOARD 043-919 RadioFans.CN 收音机爱 好者资料库 FILTER SECTION MA5100 154-410 FILTER SECTION PRINTED CIRCUIT BOARD 043-990 MA 5100 FILT
9、ER SECTION PRINTED CIRCUIT BOARD 043-990 RadioFans.CN 收音机爱 好者资料库 SCHEMATIC NOTES MA 5100 Unless otherwise specified: Resistance values are in ohms, 1/2 watt, and 10% tolerance; capacitance values smaller than 1 are in microfarads (mfd); capacitance values greater than 1 are in picofarads (pF) ; indu
10、ctors are in microhenries (H). Printed circuit board components are outlined on the schematics by dotted lines. The circled numbers on the dotted lines correspond to the numbers of the PC board layouts. The heavy lines on the schematics denote the primary signal path. The terminal numbering of rotar
11、y switches is for reference only. All voltages indicated on the schematics are measured under the following condi- tions : a. Use of an 11 megohm input impedance VTVM, b. All voltages 10% with respect to chassis ground. c. No signal at input terminals, d. AC input at 117 volts AC, 50/60Hz. e. Front
12、panel controls at: Input Selector Mode Selector AUX STEREO Volume Power MAX ON All other controls in normal position. 1. In units with serial numbers below 46H01, the output monitor PC board is not used. 2. In units with serial numbers below 44H50: R256 R254 transistors Q205 the emitter of Q2l5 C221
13、 C227, C228, C229, C230, C231, and C232 are used; R229 C201 R233 C211, C212, C213, and C2114 are .01F. 10. In units with serial numbers below 23H7S: D211, D212, D213, and D214 are not used. 11. In units with serial numbers below 22H00: R227 & R228 were 1K, 1 0 % , 1W, 12. In units with serial Nos be
14、low 54H60: R254 and R255 are 18 and F201, F202, F203j and F204 are 3A fuses. (Part Ho. 089019) LOCATION OF TRANSISTORS NOT ON PRINTED CIRCUIT BOARDS RadioFans.CN 收音机爱 好者资料库 POWER SUPPLY SECTION MA 5100 154-331 MA 5100 RadioFans.CN 收音机爱 好者资料库 REPLACEMENT PARTS A l l parts not listed are common items
- 配套讲稿:
如PPT文件的首页显示word图标,表示该PPT已包含配套word讲稿。双击word图标可打开word文档。
- 特殊限制:
部分文档作品中含有的国旗、国徽等图片,仅作为作品整体效果示例展示,禁止商用。设计者仅对作品中独创性部分享有著作权。
- 关 键 词:
- McIntosh MA5100 pwr sm 维修 电路 原理图