Boss_ME-30_Multi-Effects_Service_Manual电路图.pdf

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1、Aug, 1997ME-30 TABLE OF CONTENTSPage SPECIFICATIONS2 LOCATION OF CONTROLS 3 EXPLODED VIEW5 PARTS LIST 6 LOADING FACTORY PRESET DATA7 TEST MODE 7 12 IC DATA13 BLOCK DIAGRAM13 CIRCUIT DIAGRAM from MODE 1 to MODE 6. Use whichever appropriate for your situation. CAUTION ! The user data cannot be saved t

2、o a sequencer via MIDI. Inform the user of this fact upon receiving a service request. The test program will stop upon detecting a failure component or circuit, and may not proceed to the next step. After taking a corrective action, restart the test program from the beginning. Connection to OUTPUTs:

3、 Unless otherwise specifically instructed, channels L and R are independently monitored: first connect the plug from the measuring instrument (oscilloscope or noise meter, whichever appropriate) into OUTPUT R, next, replace the instrument plug with a blank (open) plug and then connect the instrument

4、 to OUTPUT L. Note that the channel R signal is connected to the OUTPUT L socket through the switch on the OUTPUT R socket. To obtain pure L channel signal, the R socket switch must be turned off. IDENTIFYING VERSION NUMBER LOADING FACTORY PRESET DATA TEST MODE 8 ME-30 Aug, 1997 Test Item 1. Panel L

5、CD .LED Check 2. SW Check 3. DSP Check 4. Output Frequency Response Check 5. Output Mute Circuit Check 6. OD/DS Circuit Check 7. OD/DS Gain Check 8. Input Frequency Response Check 9. AUX Circuit Check 10. Residual Noise Check and Shock Noise Check 11. OD/DS Circuit Noise Check and Shock Noise Check

6、12. NS , Tuner Check 13. EV Pedal Check Equipment Required . Oscillator ( Audio Generator ) . Oscilloscope . Noise Meter . Opened Plug To Enter the Test Mode While pressing the EFFECT ON/OFF Key , PARAMETER ( L ) Key and PARAMETER ( R ) Key simultaneously , turn the power on. All the LCD are turned

7、on. Do the following operation to select the mode. Press PEDAL 1 to start with 1. Panel LCD LED Check . NOTE : As for the following MODE 2 to MODE 6 , each mode starts after DSP check. Press PEDAL 2 to start with 4. Output Frequency Response Check . Press PEDAL 3 to start with 6. DOD/DS Circuit Chec

8、k . Press PEDAL BANK DOWN to start with 8. Input Frequency Response Check . Press PEDAL BANK UP to start with 10. Residual Noise Check and Shock Noise Check . Press MANUAL Key to start with 13. EV Pedal Check . Mode 6 to start DSP check , when return back to the previous step. Exiting test mode Simp

9、ly turn off the ME-30. 9 1. LCD & LED test Press the pedal 1. The LCD starts displaying the test pattern shown in Fig. 1. Verify that the segments are turned on. Press a key and verify that the 7-seg LED and the pedal LEDs are turned on in the order shown in Fig. 2. 2. Switch test Press a key and th

10、e LCD will read SW1. Press the keys in the order shown in Fig. 3 and verify that pressed key is represented on the LCD. The test stops upon detecting a defective key and wont proceed to the next key. Take a corrective action and return to the step 1. When the test is successful, the test program pro

11、ceeds to the step 3. DSP test. 3. DSP test The test program automatically starts the test step 3 - 1. after completion of the step 2. 3 - 1. Initialization When the unit is initialized, the program goes to the step 3 - .2. Otherwise, it displays ERROR 1 and jumps to the step 4. 3 - 2. Internal RAM t

12、est The program writes the test data into and reads out from the internal RAM and then goes to the step 3 - 3. If error, it displays ERROR 2 and jumps to the step 4. 3 - 3. External RAM test The program writes the test data into and reads out from the external RAM and then goes to the step 4. If err

13、or, it displays ERROR 3 and goes to the step 4. 4. Output frequency response test The LCD displays TEST 1. Sine waves of 20 Hz - 1 kHz - 5 kHz - 15 kHz - 20 Hz from DSP are sent to OUTPUT sockets at 0.8 sec. interval. Connect a noise meter to OUTPUT R. Set the meter to FLAT and check the readings ag

14、ainst the table below. Connect a noise meter to OUTPUT L (with the blank plug in R) and check the readings. The difference in readings between R and L must be within 1 dBm. Monitor OUTPUTs R and L and PHONES R and L in that order on the oscilloscope and make sure they are look like the waveforms sho

15、wn in Fig. 4. To go to the step 5, press VALUE + key. 5. Output stage muting test The LCD displays TEST 2. A 1 kHz sine wave from DSP is sent to OUTPUT sockets at 0.5 sec. interval. In the similar way as in the step 4 above, connect the noise meter or scope to OUTPUT R and then L (with the blank plu

16、g in R) and check the readings. The difference in readings between R and L must be within 1 dBm. Monitor OUTPUTs R and L and PHONES R and L in that order on the oscilloscope and make sure they are look like the waveforms shown in Fig. 5. To go to the step 6, press VALUE + key. To return back to the

17、step 4, press VALUE - key. 6. OD and DS circuit test The LCD displays TEST 3. A 200 Hz square wave from DSP is sent to OUTPUTs at 0.8 sec. interval at four different levels. Monitor the outputs by first connecting the scope to OUTPUT R and then L (with the blank plug in R) and make sure that the wav

18、eforms look like the ones shown in Fig. 6. To go to the step 7, press VALUE + key. To return back to the step 5, press VALUE - key. 7. OD and DS gain test The LCD displays TEST 4. A 200 Hz sine wave from DSP is sent to OUTPUTs at an 0.8 sec. interval at four different levels. Monitor the outputs by

19、first connecting the scope to OUTPUT R and then L (with the blank plug in R) and make sure that the waveforms look like the ones shown in Fig. 7. To go to the step 8, press VALUE + key. To return back to the step 6, press VALUE - key. 8. Input frequency response test The LCD displays TEST 5. Apply a

20、 square wave of 200 Hz, 200 mV to INPUTs. Monitor the outputs by first connecting the scope to OUTPUT R and then L (with the blank plug in R) and make sure that the waveform looks like the one shown in Fig. 8. To go to the step 9, press VALUE + key. To return back to the step 7, press VALUE - key. 9

21、. AUX circuit test The LCD displays TEST 6. Apply a square wave of 200 Hz, 200 mV to AUX INP. The input signal is modified into three waveforms which are sent to OUTPUTs at an 0.5 sec. interval. Monitor the outputs by first connecting the scope to OUTPUT R and then L (with the blank plug in R) and m

22、ake sure that the waveforms look like the ones shown in Fig. 9. To go to the step 10, press VALUE + key. To return back to the step 8, press VALUE - key. 10. Residual and shock noises The LCD displays TEST 7. Short-circuit the inputs (e.g. insert a short circuit plug into INPUT and AUX IN). Set the

23、noise meter to JIS-A or IHF and connect it first to OUTPUT R and then L (with the blank plug in R) and make sure that the readings are -88.0 dBm or below. Also verify that difference in noise level between channels is 1 dBm or less. Level -20 dBm 1 dBm -20 dBm 1 dBm -20 dBm 1 dBm -20 dBm 1 dBm Frequ

24、ency 20 Hz 1 kHz 5 kHz 15 kHz Aug, 1997ME-30 10 13 EV pedal test The LCD displays TES*. Swing the volume control foot pedal (EV) and check the values shown on the LCD. For pressing operation, refer to the EV adjustment shown below. If these values are not obtained, go to the FV Adjustment below. To

25、return back to the step 12, press VALUE - key. EV adjustment Set VR1 and VR2 at the middle of the travel. 1. Swing up the pedal and adjust VR1 for 002 reading on the LCD. Make sure that the LCD reads 002 just before the pedal is fully swung up. 2. Depress the pedal to the bottom and add a slightly s

26、trong force. Make sure that the LCD reads a value between 220 and 224. If outside the range, adjust VR2. 3. Release the pedal and make sure that the LCD reading is decreasing to 210 or below. 4. Fully swing up the pedal and make sure that the reading returns to 002. 5. Swing down the pedal until the

27、 bottom of the pedal just touches the cushion. Make sure that LCD reads at least 160. 6. Repeat steps 2 and 3 and verify that correct values are displayed. If an error message is displayed in TEST MODE , take the necessary to remove the cause described below. In the similar way, connect a speaker vi

28、a high gain amplifier to individual OUTPUTs. Apply shocks to the unit and make sure no audible noises are heard. To go to the step 11, press VALUE + key. To return back to the step 9, press VALUE - key. 11. OD and DS circuit residual and shock noises The LCD displays TEST 8. Short-circuit the inputs

29、 (e.g. insert a short circuit plug into INPUT and AUX IN). Set the noise meter to JIS-A or IHF and connect it first to OUTPUT R and then L (with the blank plug in R) and make sure that the readings are -84.0 dBm or below. Also verify that difference in noise level between channels is 1 dBm or less.

30、In the similar way, connect a speaker via a high gain amplifier to individual OUTPUTs. Apply shocks to the unit and make sure no audible noises are heard. To go to the step 12, first connect the OUTPUT L to the INPUT socket and then press VALUE + key (see note in step 12). To return back to the step

31、 10, press VALUE - key. 12. NS and tuner test Note: ERROR * will appear if VALUE - key has been pressed without connecting OUTPUT L to the INPUT socket. The LCD displays TEST 9. 12 - 1. NS bias test The program checks the NS bias and, if correct, goes to the step 12.2. Otherwise, the program stops,

32、displaying ERROR 4. Adjust the bias and restart the test program from step 1. 12 - 2. NS input test When the input is as designed, the program displays the tuner status. See Fig. 10. Press TUNER key. If the input is incorrect, the program displays stops here, displaying ERROR 5 or ERROR 6. Isolate t

33、he cause and restart the test program from step 1. To go to the step 13, press VALUE + key. To return back to the step 11, press VALUE - key. LCD reading 220-224 210 min 002 max 150 min Travel of EV pedal Deep press Press and release Swing up Down position ERROR MESSAGES Description DSP cannot be ac

34、cessed DSP IRAM defective DSP ERAM defective NS Circuit defective NS Circuit defective NS Circuit defective Solder bridge or improper soldering at portion anywhere between CPU (IC305) and DSP (IC306). CPU (IC305) and/or DSP (IC306) defective. Solder bridge or improper soldering at portion anywhere b

35、etween CPU (IC305) and DSP (IC306). CPU (IC305) and/or DSP (IC306) defective. Solder bridge or improper soldering at portion anywhere between CPU (IC305) and DSP (IC306). CPU (IC305) and/or DSP (IC306) defective. CPU (IC305) 29 , 30 pin around circuit and/or BIAS OPAMP (IC7) around circuit defective

36、. CPU (IC305) 29 , 30 pin around circuit and/or ENVELOP OPAMP (IC7) around circuit defective. CPU (IC305) 29 , 30 pin around circuit and/or ENVELOP OPAMP (IC7) around circuit defective. Possible cause Error Message ERROR 1 ERROR 2 ERROR 3 ERROR 4 ERROR 5 ERROR 6 ME-30 Aug, 1997 11 q w e r t y u i o

37、Fig.1. LCD TEST CSRV 1REC OD/DS 2 DLY 3 MOD EDIT/ESC ON/OFF WRITE/COPY ON/ OFF REC BYPASS TUNER MANUAL PEDAL GUITAR AMP SIMULATOR PHRASE TRAINER 9 10 1112 13 1 2 3 4 5 6 7 8 Fig.2. 7SEG. & PEDAL LED TEST CSRV 1REC OD/DS 2 DLY 3 MOD EDIT/ESC ON/OFF WRITE/COPY ON/ OFF REC BYPASS TUNER MANUAL PEDAL GUI

38、TAR AMP SIMULATOR PHRASE TRAINER SW1SW2 SW3SW4 SW6SW5SW7 SW8 SW9 SW10SW11 SW12 SW13SW14 SW15SW16 SW17 SW18SW19 SW20 SW21SW22 SW24 SW25 SW23 Fig.3. SW CHECK TEST Fig.4 TEST 1WAVE ME-30 Aug, 1997 12 Fig.5 TEST 2WAVEFig.6 TEST 3WAVE Fig.7 TEST 4WAVEFig.8 TEST 5WAVE Fig.9 TEST 6WAVE CSRV 1REC OD/DS 2 DL

39、Y 3 MOD EDIT/ESC ON/OFF WRITE/COPY ON/ OFF REC BYPASS TUNER MANUAL PEDAL GUITAR AMP SIMULATOR PHRASE TRAINER Fig.10. TUNER TEST Aug, 1997ME-30 13 IC DATA NC INPUT GND NC NC +VDD OUT PUT NC 1 2 3 4 8 7 6 5 M51955A/ BFP M51956A/ BFP A0 A1 GND A2 VCC WP SCL SDA 1 2 3 4 8 7 6 5 1 2 3 4 5 6 7 8 9 1011 12

40、 20 19 18 17 16 15 14 13 VCC VOUTL XTO CLKO MUTE DM1 DM0 RSTB FORMAT D/CL XTI DGND Vdd LRCIN DIN ZERO D/CR VOUTR AGND BCKIN VREFH VREFL AINR+ AINR- AINL+ AINL- VA AGND DIF0 DIF1 LRCK SCLK 1 2 3 4 5 6 7 8 9 10 12 12 SDTI SDTO 13 14 28 27 26 25 24 23 22 21 20 19 17 17 VCOM AOUTR AOUTL COMODE PWAD PWDA

41、 DGND VD TST1 TST2 TST3 DEM1 16 15 DEM0 MCLK Top View 1 2 3 4 5 6 7 8 9 1011 12 20 19 18 17 16 15 14 13 A4 A5 VSS I/O4 I/O3 CAS OE A8 A7 A6 I/O1 I/O2 WE RAS A9 A0 A1 A2 A3 VCC (Top view) RESET IC MS1955AFP600CEEPROM AT24C16N-10SC-2.7 (SOP) AUDIO CODEC AK4520A (SOP) DRAM HM51W4400BTT-6 (TSOP) DAC PCM

42、1717E (SOP) ME-30 Aug, 1997 BLOCK DIAGRAM 123456789101112131415 A B C D E F G H I J K L M N O P Q R S T U 12345678910111213141516171819202122232425262728 A B C D E F G H I J K L M N O P Q R S T U 14 MAIN BOARD ASSY (COMPONMENT SIDE) Aug, 1997ME-30 12345678910111213141516171819202122232425262728 A B

43、C D E F G H I J K L M N O P Q R S T U Aug, 1997 15 ME-30 MAIN BOARD ASSY (SOLDER SIDE) 12345678910111213141516171819202122232425262728 A B C D E F G H I J K L M N O P Q R S T U 16 MAIN BOARD ASSY (1/2) 2 1 3 D300 1SS302 4 12 3 IC300 GP2S24B 1 2 3 4 CN2 1 2 3 4 CN1 35A-P-10-29-4 C301 0.1 C300 0.1R330

44、 100 R337 82k R301 18k R329 820 3 2 1 Q300 2SA1015Y R302 100 1 3 2 VR2 EVND8AA03B13 1 3 2VR1 EVND8AA03B52 R300 390 NS TU SAMPLER MUTE ADA MUTE AUX OD_MODE0 OD_MODE1 BATT CHECK OD_DRIVE0 OD_DRIVE1 C354 0.1 TP1 TP TP2 TP C350 0.1 LRCLK BCLK MASTERCLK DADATA1 DADATA2 ADDATA 12X1 DSX840GA 33.8688MHZ C30

45、7 5P C327 5P C343 0.1 C342 0.1 C358 0.1 R343 47k L302 BLM31A601SPT L301BLM31A601SPT L305BLM31A601SPT L304BLM31A601SPT L307 BLM31A601SPT L306 BLM31A601SPT C345 0.1 C344 0.1 R345100 C359 0.01 L303BLM31A601SPT R305 100 C3040.1 C3050.1 C320 33P C321 33P 12 X2 SMD-49 5MHz 21 C332 10/6.3T R306 10k 2 1 C32

46、6 47/16 C330 100P C333 100P 3 2 1 Q301 2SA1586GR 1 2 D301 MA111 R311 10k R344 10k C302 0.1 R324 680 14 7 1 2 9 8 3 4 5 6 10 11 12 13 IC304 74AC164F 1 2 LED4 SLR-342VR3F R326 680 R325 680 R322 680 R323 680 BANKBANK 1 2 LED5 SLR-342VR3F 1 2 LED6 SLR-342VR3F 1 2 LED2 SLR-342VR3F 1 2 LED3 SLR-342VR3F 1

47、2 3 4 510 9 87 6 11 12 13 14 LED1 LN514RK 12UPDOWN C303 0.1 18 27 36 45 RA3 EXBV8V681JV 18 27 36 45 RA2 EXBV8V681JV 14 7 1 2 9 8 3 4 5 6 10 11 12 13 IC307 74AC164F 3 R313 47k C328 100P C329 100P R339100 2 1 C325 10/6.3T 6 0 6 1 6 2 6 3 6 4 6 5 6 6 6 7 6 8 6 9 7 0 7 1 7 2 7 3 7 4 7 5 7 6 7 7 7 8 7 9

48、8 0 8 1 8 2 8 3 8 4 8 5 8 6 8 7 8 8 8 9 9 0 9 1 9 2 9 3 9 4 9 5 9 6 9 7 9 8 9 9 5 1 5 2 5 3 5 4 19 20 21 22 23 24 25 26 100 1 2 3 4 5 6 78 10 11 12 14 13 15 16 17 18 9 2 7 28 29 30 31 32 33 34 35 3 6 3 7 38 39 4 0 41 42 43 44 45 46 47 48 49 50 59 58 57 56 55 IC305 uPD78064 R312 10k R340 10k 2 6 28 4

49、1 52 65 69 78 83 91 3 7 15 21 29 40 44 51 53 62 66 72 75 79 82 90 1 45 891 0 1 1 1 2 1 3 1 4 1 6 1 7 1 8 1 9 2 0 2 2 2 3 2 4 2 5 2 6 2 7 3 0 3 1 3 2 3 3 3 4 3 5 3 6 3 7 3 8 3 9 42 43 45 46 47 48 49 50 54 55 56 57 58 59 60 61 63 64 6 7 6 8 7 0 7 1 7 4 7 3 7 6 7 7 8 0 8 1 8 4 8 5 8 6 8 7 8 8 8 9 1 0 0 9 2 9 3 9 4 9 5 9 6 9 7 9 8 9 9 IC306 TC203C040AF-001 C308 0.1 C309 0.1 C310 0.1 C311 0.1 R307 1M C314 0.1 C315 0.1 C316 0.1 C317 0.1 L300 BLM41A800SPT 1 6 1 7 4