Boss_me50 电路图 维修原理图.pdf

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1、 SERVICE NOTES Issued by RJA Copyright 2003 ROLAND CORPORATION All rights reserved. No part of this publication may be reproduced in any form without the written permission of ROLAND CORPORATION. Printed in Japan (0800) (AS)17058813E0 Feb.2003ME-50 SPECIFICATIONS.2 LOCATION OF CONTROLS .4 LOCATION O

2、F CONTROLS PARTS LIST.4 EXPLODED VIEW.6 EXPLODED VIEW PARTS LIST.8 PARTS LIST.10 CHECKING THE VERSION NUMBER.13 RESTORING THE FACTORY SETTINGS.13 TEST MODE.13 BLOCK DIAGRAM.20 CIRCUIT BOARD.22 CIRCUIT BOARD.24 CIRCUIT DIAGRAM.26 TABLE OF CONTENTS 收音机爱好者资料库 Ra d i o Fa n s .CN 2 Feb.2003 SPECIFICATIO

3、NS ME-50: Guitar Multiple Effects AD Conversion 24 bit + AF method (*) DA Conversion 24 bit Sampling Frequency 44.1 kHz Patches 30 (user) Effects Tone Modify Compressor Overdrive/Distortion Chorus Phaser Flanger Harmonist Tremolo Pan Vibrato UNI-V Rotary Delay Reverb Noise Suppressor (Effects for Ex

4、pression Pedal) Foot Volume Wah Resonance Voice Ring Modulator Bend (+1 OCTAVE, -1 OCTAVE) Nominal Input Level INPUT: -10 dBu AUX IN: -10 dBu Input Impedance INPUT: 1 M ohms AUX IN: 100 k ohms Nominal Output Level -10 dBu Output Impedance 2 k ohms Display 7 segments, 1character LED Jacks INPUT jack

5、GUITAR AMP jacks L(MONO)/R AUX IN jack (Stereo Mini type) PHONES/LINE OUT jack AC Adaptor jack Power Supply DC 9 V: Dry batteries (R6/LR6 (AA) type) x 6, AC Adaptor (PSA series: Optional) Current Draw 120 mA *Expected battery life under continuous use: Carbon:3.5 hours Alkaline: 12 hours These figur

6、es will vary depending on the actual conditions of use. Dimensions 384 (W) x 225 (D) x 102 (H) mm 15-1/8 (W) x 8-7/8 (D) x 4-1/16 (H) inches Weight 3.15 kg / 7 lbs (including batteries) Accessories Owners Manual ENGLISH :(#G6017362) JAPANESE :(#G6017361) Dry Batteries (Alkaline: LR6 (AA) type) x 6:(

7、#*) Options AC Adaptor: BOSS PSA series Foot Switch: BOSS FS-5U *0 dBu = 0.775 Vrms *In the interest of product improvement, the specifications and/or appearance of this unit are subject to change without prior notice. *AF method (Adaptive Focus method) This is a proprietary method from Roland that

8、vastly improves the signal-to- noise (S/N) ratio of the A/D and D/A converters. 收音机爱好者资料库 Ra d i o Fa n s .CN 3 ME-50 收音机爱好者资料库 Ra d i o Fa n s .CN 5 Feb.2003ME-50 LOCATION OF CONTROLS fig.panel 1 2,4 3,4 1 5,6,18 2,4 3,4 1 7 8 91011,4 13 12 1415,1617,18 19202122232425 262728 29 LOCATION OF CONTROLS

9、 PARTS LIST NOPART CODEPART NAMEDESCRIPTION 11502928100LED (RED)L-34HDSL 2F3279803POTENTIOMETER 11 CLICKS 50KBRD901-40-125F-B54-11D 3F3279802POTENTIOMETERNO CLICK 50KBRD901-40-125F-B54-00D 4G2477122R-KNOB 5F5029117LEDL-312LRD 6G247751001VGA KEYTOP S BLACK WITH LENS 7G2027904TOP COVER 8G2187193BOTTOM

10、 COVER 9G2187602SWITCH PEDAL 10G2227301PEDAL ESCUTCHEON 11F3279804POTENTIOMETER 6 CLICKSRD901-40-125F-B54-06D 50KB 12G2187547VR PEDAL 13G2357125PEDAL PLATE 1415029106LEDLD002VB 15G20470017SEG COVER 16F5029408LEDA-601H 17G247751301VGA KEYTOP S WITHOUT LENS 18F3129306SWITCHSKQKAB 19G1147002REAR PANEL

11、2013449155MFPHONE JACK (MONO)HTJ-064-12I 2113449440JACKHSJ0857-01-210 2213449150MFPHONE JACK (STEREO)HTJ-064-12D 23F3159111SLIDE SWSK22F02 24F3449717JACKHEC2392-01-150 25F2367103CORD HOOK 26G2217733PEDAL LABEL(OD/DS) 27G2217734PEDAL LABEL(MOD) 28G2217735PEDAL LABEL(DELAY) 29F3279782POTENTIOMETERRK11

12、K1140(10K SPECIAL B-CURVE) NOPART CODEPART NAMEDESCRIPTION 6 Feb.2003 EXPLODED VIEW fig.explo1 7 ME-50 fig.explo2 8 Feb.2003 EXPLODED VIEW PARTS LIST PARTS SCREWS NOPART CODEPART NAMEDESCRIPTION 1G2027904TOP COVER 2G2187193BOTTOM COVER 3G1147002REAR PANEL 4G20470017SEG COVER 5G2187547VR PEDAL 6G2187

13、910PEDAL HOLDER 7G2147119BOLT HOLDER 8G2357125PEDAL PLATE 9G2357122REAR CUSHION 10G2357111CUSHION R 11G2147806STAY 12G2217733PEDAL LABEL(OD/DS) 13G2217734PEDAL LABEL(MOD) 14G2217735PEDAL LABEL(DELAY) 15G2227301PEDAL ESCUTCHEON 16G2187602SWITCH PEDAL 17G2177103SUPPORT SPRING 18G2357126PEDAL FOOTH=7.6

14、 19G247751001VGA KEYTOP S BLACK WITH LENS 20G247751301VGA KEYTOP S WITHOUT LENS 21G2477122R-KNOB 22F2367103CORD HOOK 23G2357120FOOTH=5 24G2017617BATTERY CASE 25G2027602BATTERY COVER 26G2177304BATTERY TERMINAL (+ -) 27G2177305BATTERY TERMINAL (+) 28G2177306BATTERY TERMINAL (-) 2975E013P000MAIN SHEET

15、ASSY 30F3467025WIRING 2P MAIN SHEET ASSY includes the following parts. 31 * EXP BOARD ASSY NOPART CODEPART NAMEDESCRIPTION aH5039521VR ACCESSORY NUT M7 bH5039520M9 NUT cH5039126M9 WASHER dH5039514NUT M6HSJ-0999-01-190 eH5039121WASHER 9.5X6.5HSJ-0999-01-210 fH5039510NUT M9X12X2FENI gH5039112WASHER M9

16、 hH5029331SCREW 3X8BINDING S-TIGHT FEBC kH5029332SCREW 3X6BINDING S-TIGHT FEBZC mH5029308SCREW 3X10BINDING S-TIGHT FEBC nH5029330SCREW M3X8BINDING TAPTITE P BZC oH5019124SCREW M3X6PAN MACHINE W/SW+SMALL PW ZC pH5019130SCREW M3X6PAN MACHINE W/SW+PW ZC qH5029867HEX BOLT M6X70HALF THEREAD BZ rH5039122P

17、LAIN WASHER6X13X1 BZC sH5039515NUT M6U BZC tH5019154SPRING WASHER6X12X1 uH5039111PLAIN WASHER 3X8ZC 9 ME-50 10 Feb.2003 PARTS LIST fig.part1e CASING # G20470017SEG COVER 1 G2017617BATTERY CASE 1 G2027602BATTERY COVER 1 # G2187193BOTTOM COVER 1 G2227301PEDAL ESCUTCHEON 3 # G1147002REAR PANEL 1 G21876

18、02SWITCH PEDAL 3 # G2027904TOP COVER 1 # G2187547VR PEDAL 1 CHASSIS # G2187910PEDAL HOLDER # G2147806STAY 1 KNOB,BUTTON G2357120FOOTH=5 4 # F2367103CORD HOOK 1 G2477122R-KNOB 20 G247751001 VGA KEYTOP S BLACK WITH LENS 1 G247751301VGA KEYTOP S WITHOUT LENS 4 SWITCH 13129778SKQKAHTACT SWITCHSW7,8,93 #

19、 F3129306SKQKABSWITCHSW1,2,3,4,65 # F3159111SK22F02SLIDE SWSW51 JACK,EXT TERMINAL 13449150MFHTJ-064-12DPHONE JACK (STEREO)JK6,42 13449155MFHTJ-064-12IPHONE JACK (MONO)JK1,2,33 # F3449717HEC2392-01-150JACKJK71 13449440HSJ0857-01-210JACKJK51 PWB ASSY # 75E013P000MAIN SHEET ASSY 1 IC 01672634TC74HC4052

20、AFT(EL)IC TTLIC4,7,103 15209102M51957BFPIC (SYSTEM RESET)IC31 # F5199110S-81233SGYIC (REGURATOR)IC191 # F5289101NJM2100M 8P SOPIC (OP.AMP)IC21 # 03123889HD6433687IC (MASK CPU)IC111 # F5279309BU2090F-E2IC (LED DRIVER)IC16,172 # F5179607CAT24WC32JIC (EEPROM)IC151 02231767RA0A-101 (TC223C080AF-101)IC (

21、DSP)IC81 # F5279520LC32V4265T-25-TLMIC (DRAM)IC121 # 03123901LT1616IC (DC-DC)IC141 15189261M5218AFP-600EIC (BIPOLAR OP AMP)IC1,5,183 01125012NJM4556AMIC (BIPOLAR OP AMP)IC61 02451434AK4552VTIC (AD/DA)IC31 TRANSISTOR 153091042SA1586-GR(TE85R)TRANSISTORQ61 153191072SC4116-GR(TE85R)TRANSISTORQ91 153191

22、152SC4213-A(TE85L)TRANSISTORQ2,3,4,54 153291032SK880GR-TE85RFET TRANSISTORQ11 SAFETY PRECAUTIONS: The parts marked have safety-related characteristics. Use only listed parts for replacement. CONSIDERATION ON PARTS ORDRING When ordering any parts listed in the parts list, please specify the following

23、 items in the order sheet. QTYPART NUMBERDESCRIPTIONMODEL NUMBER Ex.1022575241Sharp KeyC-20/50 152247017300Knob (orange)DAC-15D Failure to completely fill the above items with correct number and description will result in delayed or even undelivered replacement. NOTE: The parts marked # are new. (in

24、itial parts) 11 ME-50 DIODE 1502928100L-34HDSLLED (RED)LED2,3,6,79,10,11,12,13,14,15,16,17,19,20,2116 15029106LD002VBLEDLED4,82 # F5029408A-601HLEDLED51 F5029117L-312LRDLEDLED181 153391191SS-352DIODED1,3,5,64 F5339137SS14 VF=0.45VDIODED4,72 RESISTOR F5419707CRN34101JRESISTOR ARRAYRA1,2,3,4,65 F54197

25、05CRN34103JRESISTOR ARRAYRA7,92 F5419726CRN34473JRESISTOR ARRAYRA8,10,113 F542936615K OHM F RANK (1%)RESISTOR (CHIP)R791 # F53999146.8KFRESISTORR821 F539995168(1/2W) CHIPRESISTORR39,522 F2569127MINISMDC075POLY SWITCHR801 00566867RPC05T 100 JMTL.FILM RESISTORR33,702 00567023RPC05T 101 JMTL.FILM RESIS

26、TORR20,61,1003 00567156RPC05T 102 JMTL.FILM RESISTORR9,10,26,274 00567289RPC05T 103 JMTL.FILM RESISTORR1,2,5,6,7,13,16,21,22,28,29,35,36,38,42,46,30 00567412RPC05T 104 JMTL.FILM RESISTORR12,6318 00567556RPC05T 105 JMTL.FILM RESISTORR12,R632 00567167RPC05T 122 JMTL.FILM RESISTORR1011 00567290RPC05T 1

27、23 JMTL.FILM RESISTORR86,892 00567301RPC05T 153 JMTL.FILM RESISTORR41 00567190RPC05T 222 JMTL.FILM RESISTORR851 00567078RPC05T 271 JMTL.FILM RESISTORR102,103,104,105,106,107,108,1098 00567334RPC05T 273 JMTL.FILM RESISTORR95,992 00567089RPC05T 331 JMTL.FILM RESISTORR1221 00567345RPC05T 333 JMTL.FILM

28、RESISTORR3,11,23,77,78,81,84,87,88,138,139,141,145,12 00566967RPC05T 470 JMTL.FILM RESISTORR83,912 00567112RPC05T 471 JMTL.FILM RESISTORR94,1122 00567245RPC05T 472 JMTL.FILM RESISTORR17,32,44,56,58,59,140,1428 00567378RPC05T 473 JMTL.FILM RESISTORR15,31,37,40,41,45,47,48,51,54,55,60,129,13314 005672

29、56RPC05T 562 JMTL.FILM RESISTORR127,1312 00567134RPC05T 681 JMTL.FILM RESISTORR92,93,110,111,113,114,115,116,117,118,119, 1 16 F542936510K OHM F RANK (1%)CHIP RESISTORR241 F5429386150K F (1608TYPE)CHIP RESISTORR181 POTENTIOMETER F3279802RD901-40-125F-B54-00D POTENTIOMETERNO CLICK 50KBVR3,4,6,7,8,10,

30、11,12,13,14,15,18,19,20,2115 F3279804RD901-40-125F-B54-06D 50KBPOTENTIOMETER 6 CLICKSVR21 F3279803RD901-40-125F-B54-11D POTENTIOMETER 11 CLICKS 50KBVR5,9,16,174 # F3279782RK11K1140(10K SPECIAL B-CURVEPOTENTIOMETERVR11 CAPACITOR F5349704ECPU1C474MA5 0.47 MYLAR CAPACITOR (SUBMICRON)C41 F3629110100U/16

31、V (H=7MM)CHEMICAL CAPACITORC5,28,39,54,76,85,107,108,111,113,117,119,1219 F362970010U/16V (H=7MM)CHEMICAL CAPACITORC2,9,10,11,12,16,19,20,22,23,24,25,31,42,49,17 01674612ECJ1VB1H103KCERAMIC CAPACITORC1161 # 01674501ECJ1VB1H182KCERAMIC CAPACITORC37,532 01674512ECJ1VB1H222KCERAMIC CAPACITORC1,7,143 01

32、674712ECJ1VF1A105ZCERAMIC CAPACITORC1301 01674701ECJ1VF1E104Z 0.1UF/16VKCERAMIC CAPACITORC18,26,29,30,32,34,38,45,46,47,48,59,60,61,658 01674167ECUV1H100DCVCERAMIC CAPACITORC3,8,21,35,36,51,52,128,1299 01674467ECUV1H102JCVCERAMIC CAPACITORC951 01674189ECUV1H120JCVCERAMIC CAPACITORC100,1012 01674356E

33、CUV1H151JCVCERAMIC CAPACITORC44,582 # F36297080.22U/50CAPACITORC56,412 # F36297011/50CAPACITORC331 # F362970347/16CAPACITORC661 INDUCTOR,COIL,FILTER F5409131QT04-60EMIL11 # F2449226SLF7032T-100M 10UHCOILL31 CRYSTAL,RESONATOR F5299306HC-49SM 10.000MHZCRYSTALX11 02672401SG-8002JC 67.7376MHZ PCCRYSTALX

34、21 CONNECTOR F3439123A2001WR2-3PCONNECTOR 3PCN21 F343916053015-0210 2P P=2MMCONNECTORCN31 12 Feb.2003 WIRING,CABLE # F3467025WIRING 2P 1 # F3467024WIRING 3P 1 SCREWS H5039111WASHER D8D3T0.5ZC 2 # H5039515NUT M6U BZC 1 H5019124SCREW M3X6 PAN MACHINE W/SW+SMALL PW ZC 8 H5019130SCREW M3X6PAN MACHINE W/

35、SW+PW ZC 8 # H5039121WASHER 9.5X6.5HSJ-0999-01-210 # H5039514NUT M6HSJ-0999-01-190 # H5029867HEX BOLT M6X70HALF THEREAD BZ 1 H5039510NUT M9X12X2FENIfor Phones Jack5 # H5029330SCREW M3X8BINDING TAPTITE P BZC 6 H5029332SCREW 3X6BINDING S-TIGHT FEBZC 6 H5029308SCREW 3X10BINDING S-TIGHT FEBC 1 H5029331S

36、CREW 3X8BINDING S-TIGHT FEBC 10 # H5039122PLAIN WASHER6X13X1 BZC 1 # H5019154SPRING WASHER6X12X1 1 G2147119BOLT HOLDER 2 H5039520M9 NUT with VR RK11K11401 H5039126M9 WASHER 1 H5039521VR ACCESSORY NUT M7 with VR RD901-4020 H5039112WASHER M9 for Phones Jack5 PACKING # G2627753PACKING CASE 1 # G2267501

37、PAD L 1 # G2267502PAD R 1 MISCELLANEOUS # G2199505LED SPACERLED-7A 15 # G2199506LED SPACERLED-15A 3 # G2357126PEDAL FOOTH=7.6 3 # G2217733PEDAL LABEL(OD/DS) 1 # G2217734PEDAL LABEL(MOD) 1 # G2217735PEDAL LABEL(DELAY) 1 G2177304BATTERY TERMINAL (+ -) 2 G2177305BATTERY TERMINAL (+) 1 G2177306BATTERY T

38、ERMINAL (-) 1 G2357111CUSHION R 1 G2147127DC JACK HOLDER 1 # G2357125PEDAL PLATE 1 G2357122REAR CUSHION 2 G2177103SUPPORT SPRING 3 ACCESSORIES (Standard) # G6017361OWNERS MANUALJAPANESE # G6017362OWNERS MANUALENGLISH 1 40232389WARRANTY CARDFOR BOSS JAPAN ONLY 13 ME-50 CHECKING THE VERSION NUMBER Dev

39、ice Settings Turn the VR knobs (pots) completely to the left (minimum). Hold down the EDIT/EXIT switch and WRITE switch and turn the POWER switch on. Press the FOOT 1 switch. If the version number is Ver.1.01, the “b” (flat symbol) LED lights up, and “1” appears in the seven-segment LED. fig.test-4_

40、70 RESTORING THE FACTORY SETTINGS Hold down the WRITE switch and switch and turn the POWER switch on. “F” appears in the seven-segment LED. Press the WRITE switch. The BANK LED flashes. Press the WRITE switch. The seven-segment LED and BANK LED flash, and the factory data is loaded. The dot in the s

41、even-segment portion lights, and Factory Reset is completed when the unit switches to Play mode. Never turn off the power while factory data is being loaded. TEST MODE Items to Have On Hand Oscilloscope (1) Oscillator (1) Monitor amps (2) Noise meters (2) FS-5U (2) Open plug Measuring Equipment Sett

42、ings Oscillator Waveform: Rectangular wave Frequency: 400 Hz Output Level: 50 mVp-p Oscilloscope TIME/DIV : 0.5 msec VOLTS/DIV : 0.2 V Noise Meter Filter: IHF-A (JIS-A) Foot Switch (FS-5U) POLARITY SW: Jack Switching into Test Mode Device Settings Turn all VR knobs (pots) completely to the left (min

43、imum). fig.test-2_50 Hold down the EDIT/EXIT switch and WRITE switch and turn the POWER switch on. Test Categories 1.LED Full Lighting, EEPROM Check 2.LED Lighting Check 3.Key SW, Pedal SW Check 4.External SW Check 5.VR Check 6.EXP Pedal Check 7.DSP Check 8.D/A Circuitry Check 9.DRAM Check 10. INPUT

44、 A/D Check, AUX IN Check, Noise Check 11. EXP Pedal Adjustment Test Details Switch to Test mode. Device Settings Turn all VR knobs (pots) completely to the left (minimum). Hold down the EDIT/EXIT switch and WRITE switch and turn the POWER switch on. 1. LED Full Lighting, EEPROM Check After the test

45、is implemented, with data read from and written to the EEPROM, all of the LEDs light up. Confirm the following. 1. All LEDS are lit. 2. No LED goes off when the unit is subjected to shock. 14 Feb.2003 fig.test-3_50 With all LEDs lit, press the following switches to enable selection of the type of ch

46、eck to start. Press the FOOT 1 switch to proceed to the “Version Check.” Press the FOOT 2 switch to proceed to “5. VR Check.” Press the FOOT 3 switch to proceed to “6. EXP Pedal Check.” Press the switch to proceed to “7. DSP Check.” Press the switch to proceed to “11. EXP Pedal Adjustment.” Version

47、Check Press the FOOT 1 switch. If the version number is Ver.1.01, the “b” (flat symbol) LED lights up, and “1” appears in the seven-segment LED. After confirming the version, press the switch to proceed to the LED lighting check. 2. LED Lighting Check Confirm that the LEDs light up in sequence each the WRITE switch is pressed. fig.test-5_50 Sequence in Which LEDs Light Up TONE MODIFYCOMPRESSORNSREVERB(b#) TUN