Yamaha M2500 Mixer Service Manual 电路图.pdf

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1、M2500 1 SPECIFICATIONS. 3/5 DIMENSIONS. 8 PANEL LAYOUT. 9 CIRCUIT BOARD LAYOUT. 16 DISASSEMBLY PROCEDURE. 18 LSI PIN DESCRIPTION. 26 IC BLOCK DIAGRAM. 30 CIRCUIT BOARDS. 33 INSPECTIONS. 61/69 TEST PROGRAM. 76/78 ERROR MESSAGES. 80/81 MIDI IMPLEMENTATION CHART . 82 CIRCUIT DIAGRAMS PARTS LIST CONTENT

2、S SERVICE MANUAL PA 011484 M2500-2420000220-850000 M2500-3220000220-1000000 M2500-40C 20000220-1150000 1.50K-5972 Printed in Japan 2000.02 HAMAMATSU, JAPAN MIXING CONSOLE 1/2 M2500-48C 20000220-1300000 M2500-56C 20000220-1450000 PW3000MA 20000220-100000 M2500-56C RadioFans.CN 收音机爱 好者资料库 M2500 2 IMPO

3、R TANT NOTICE This manual has been provided for the use of authorized Yamaha Retailers and their service personnel. It has been assumed that basic service procedures inherent to the industry, and more specifically Yamaha Products, are already known and under- stood by the users, and have therefore n

4、ot been restated. WARNING :Failure to follow appropriate service and safety procedures when servicing this product may result in per- sonal injury, destruction of expensive components and failure of the product to perform as specified. For these reasons, we advise all Yamaha product owners that all

5、service required should be performed by an authorized Yamaha Retailer or the appointed service representative. IMPORTANT :This presentation or sale of this manual to any individual or firm does not constitute authorization certifi- cation, recognition of any applicable technical capabilities, or est

6、ablish a principal-agent relationship of any form. The data provided is belived to be accurate and applicable to the unit(s) indicated on the cover. The research engineering, and service departments of Yamaha are continually striving to improve Yamaha products. Modifications are, therefore, inevitab

7、le and changes in specification are subject to change without notice or obligation to retrofit. Should any discrepancy appear to exist, please contact the distributors Service Division. WARNING :Static discharges can destroy expensive components. Discharge any static electricity your body may have a

8、ccumulated by grounding yourself to the ground bus in the unit (heavy gauge black wires connect to this bus.) IMPORTANT :Turn the unit OFF during disassembly and parts replacement. Recheck all work before you apply power to the unit. WARNING: CHEMICAL CONTENT NOTICE! The solder used in the productio

9、n of this product contains LEAD. In addition, other electrical/electronic and/or plastic (Where applicable) components may also contain traces of chemicals found by the California Health and Welfare Agency (and possibly other entities) to cause cancer and/or birth defects or other reproductive harm.

10、 DO NOT PLACE SOLDER, ELECTRICAL/ELECTRONIC OR PLASTIC COMPONENTS IN YOUR MOUTH FOR ANY REASON WHAT SO EVER! Avoid prolonged, unprotected contact between solder and your skin! When soldering, do not inhale solder fumes or expose eyes to solder/flux vapor! If you come in contact with solder or compon

11、ents located inside the enclosure of this product, wash your hands before handling food. WARNING Components having special characteristics are marked and must be replaced with parts having specification equal to those originally installed. LITHIUM BA TTERY HANDLING This product uses a lithium batter

12、y for memory back-up. WARNING :Lithium batteries are dangerous because they can be exploded by improper handling. Observe the following pre- cautions when handling or replacing lithium batteries. Leave lithium battery replacement to qualified service personnel. Always replace with batteries of the s

13、ame type. When installing on the PC board by soldering, solder using the connection terminals provided on the battery cells. Never solder directly to the cells. Perform the soldering as quickly as possible. Never reverse the battery polarities when installing. Do not short the batteries. Do not atte

14、mpt to recharge these batteries. Do not disasemble the batteries. Never heat batteries or throw them into fire. ADVARSEL! Lithiumbatteri-Eksplosionsfare ved fejlagtig handtering. Udskiftning ma kun ske med batteri af samme fabrikat og type. lever det brugte batteri tilbage til leverandren. VARNING E

15、xplosionsfara vid felaktigt batteribyte. Anvand samma batterityp eller en ekvivalent typ som rekommenderas av apparattillverkaren. Kassera anvant batteri enligt fabrikantens instruktion. VAROITUS Paristo voi rajahtaa, jos se on virheellisesti asennettu. Vaihda paristo ainoastaan laitevalmistajan suo

16、sittelemaan tyyppiiin. Havita kaytetty paristo valmistajan ohjeiden mukaisesti. The following information complies with Dutch official Gazette 1995. 45; ESSENTIALS OF ORDER ON THE COLLECTION OF BATTERIES. Please refer to the diassembly procedure for the removal of Back-up Battery. Leest u voor het v

17、erwijderen van de backup batterij deze beschrijving. RadioFans.CN 收音机爱 好者资料库 M2500 3 SPECIFICATIONS General specifi cations 0 dB is referenced to 0.775 Vrms. Total Harmonic DistortionLess than 0.1% (THD+N) (Master output)20 Hz20 kHz +14 dB 600 Frequency Response0+1, 3 dB (Master Output)20 Hz20 kHz +

18、4 dB 600 Gain control at minimum level Hum may be turned ON or OFF via rear-panel phantom Master switch. When Master is ON, individual channels may be turned ON or OFF via +48V switches (with red LED) on each input chan- nel. CH LED Indicators PEAKLED(red) built into each CH INPUT turns on when pre-

19、Fader level reaches +17 dB. NOMLED(yellow) built into each CH INPUT turns on when pre-Fader level reaches 0 dB. SIGNALLED(green) built into each CH INPUT turns on when pre-Fader level reaches 13 dB. ST CH LED Indicators PEAKLED(red) built into each ST CH INPUT turns on when pre-Fader L+R level reach

20、es +17 dB. NOMLED(yellow) built into each ST CH INPUT turns on when pre-Fader L+R level reaches 0 dB. SIGNALLED(green) built into each ST CH INPUT turns on when pre-Fader L+R level reaches 13 dB. Oscillator/NoiseSwitchable sine wave 100 Hz, 1 kHz or 10 kHz, or pink noise. Scene MemoryDirect Scene Me

21、mory recall switches (18) Switchable Scene Memory recall (1128) VU Meters11 illuminated meters (0VU= +4 dB output 600 load) #1 ; GROUP1/AUX7AUX1AUX7/GROUP1MATRIX1 #2 ; GROUP2/AUX8AUX2AUX8/GROUP2MATRIX2 #3 ; GROUP3/AUX9AUX3AUX9/GROUP3MATRIX3 #4 ; GROUP4/AUX10AUX4AUX10/GROUP4MATRIX4 #5 ; GROUP5/AUX11A

22、UX5AUX11/GROUP5MATRIX5 #6 ; GROUP6/AUX12AUX6AUX12/GROUP6MATRIX6 #7 ; GROUP7/AUX13NONEAUX13/GROUP7MATRIX7 #8 ; GROUP8/AUX14NONEAUX14/GROUP8MATRIX8 #9 ; STEREO LPFL/AFL L #10 ; MONO/C #11 ; STEREO RPFL/AFL R VU Meter Peak IndicatorsLED(red) built into each VU meter turns on when output signal is above

23、 the level 3 dB lower than clipping level. DimensionHeigt265 mm Depth875 mm (except rear connectors) Width2385 mm(56C), 2142 mm(48C), 1899 mm(40C), 1642 mm(32), 1400 mm(24) Weight102kg(56C), 93kg(48C), 84kg(40C), 71kg(32), 62kg(24) *1 Hum equivalent to a 20 kHz fi lter with infi nite dB/octave atten

24、uation. For European Model Purchaser/User information specifi ed in EN55103-1 and EN55103-2. Conformed Enviroment: E1, E2, E3 and E4. RadioFans.CN 收音机爱 好者资料库 M2500 4 Input/output characteristics Input specifications *1 0 dB=0.775 Vrms. *2 Balanced. *3 Unbalanced. *4 Balanced (T=HOT, R=COLD, S=GND).

25、*5 Unbalanced. *6 Unbalanced (T=SIGNAL, R=GND, S=GND). *7 Unbalanced (T=OUTPUT, R=INPUT, S=GND). *8 n=56, 48, 40, 32 or 24 *9 Sensitivity is the lowest level that will produce an output of +4 dB(1.23 V), or the nominal output level when the unit is set to maximum level. Output specifications *1 0 dB

26、=0.775 Vrms. *2 Balanced. *3 Unbalanced (T=OUTPUT, R=INPUT, S=GND). *4 Unbalanced. *5 n=56, 48, 40, 32 or 24 ConnectionPAD Gain Trim Actual Load Impedance For Use With Nominal Input Level *1 Connector In Mixer Sensitivity *9NominalMax before Clip CH INPUT (1n) *8 0 60 3 k 50600 Mics H. When CPU read

27、s data; L. 26/ONSWION switch input 13/CSIChip select27/ONRYOON relay between G1/A7 G8/A14, STEREO L and R, AUX 1 and 2, AUX 3 6, A7/G1 A14/G8, and MONITOR (L and R). The level difference between the CH (1 to 24, 32, 40, 48, 56) of each output should be 2 dB or less. *1 Turn on the PFL switch. *2 Mea

28、sure the AUX1 only. *3 Measure the AUX3 only. *4 Measure the A7/G1 and A11/G5 only. *5 The PFL LED and the INPUT (CUE) LED in the MASTER section will light up. Table 2-3 Input Terminal ST CH INPUT (1 to 4)Unit: dBs InputInputGAINA/BAUXBALG1/A7, G3/A9,G2/A8, G4/A10,STEREOSTEREOMONO/CAUX1, 2AUX36A7/G1

29、MONITORMONITOR TerminalLevelPREG5/A11, G7/A13G6/A12, G8/A14L OUTR OUTOUTOUTOUTA14/G8L OUT *1R OUT *1 OUTOUTOUT 1A L40MAXOFF(A)OFFL +14 2 +14 2-10.5 2+6.5 2+16.5 2+12.5 20 2 *5 - ON-+6.5 2 *3+2.5 2 *4- - 1A ROFFR- +14 2-+14 2+10 2+6.5 2+16.5 2 *3- 0 2 1A L0MINOFFL-+14 2- 1A RR-+14 2- 1B L-30MAXON(B)O

30、FFL-+14 2- 1B RR-+14 2- 1B L0MINL-+14 2- 1B RR-+14 2- 24-40MAXOFFL +14 2-+14 2- +16.5 2 +12.5 2.5+22.5 2.5+18.5 2.5 0 2 *5 0 2 LON-+12.5 2.5 *3 +8.5 2.5 *4- -OFFR-+14 2-+14 2- 24OFFR-+14 2- R 240MINOFFL-+14 2- LR-+14 2- Table 2-2 Input Terminal CH INPUT/CH INSERT IN (1 to 24, 32, 40, 48, 50)Unit: dB

31、s Input TerminalInput LevelGAIN26dBCHINSERT OUTSTEREO A(L)OUT CH INPUT-16MINOFF0.0+/-2.0- CH INSERT IN-10-+14.0+/-2.0 Table 2-1 Input Terminal CH INPUT (1 to 24, 32, 40, 48, 56)Unit: dBs InputGAIN26dBAUXLCRLCRGROUPG1/A7STEREOMONO/CAUX1, 2AUX36A7/G1MONITOR LevelPREPAN /AUXG8/A14(LR)OUTOUTOUTA14/G8(L,

32、 R) FLIPOUTOUT *1OUTOUT *2 OFFOFF -OFF +14 2 *1 +14 2 +14 2 +10 2 +20 2 +16 2 0 2 -70MAXOFFON *3 +20 2- +10 2 *1- ONOFF -OFF- +10 2 *4 +6 2 *5- -44MAXONOFFOFF -OFF- +14 2 *6- OFF -OFF- +14 2 *6- -26MINOFFOFFLOFF- +14 2 *6- ON *8CenterOFF- +14 2- ROFF- +14 2 *7- M2500 64 The level difference between

33、ST CH INPUT (1 to 4) of each output should be 2 dB or less. The level difference between STEREO L and R, AUX 1 and 2, AUX3 6, A7/G1 A14/G8 and MONITOR L and R should be 2 dB or less. The level difference between STEREO L and R should be 2 dB or less. The level difference between AUX1 AUX6, G1/A7 G8/

34、A14, STEREO L and R should be 2 dB or less. The level difference between AUX1 AUX6, STEREO L and R, A7/G1 A14/G8 should be 2 dB or less. *1 The AFL LED and the MASTER (CUE) LED in the MASTER section will light up. *2 Turn all the STEREO L and R, MONO/C Mix level controls of MATRIX (1 8) to the MAX p

35、osition. The level difference between MONITOR L and R, MATRIX (1 8) should be 2 dB or less. Table 2-4 Input Terminal SUB IN (STEREO L, R, MONO/C)Unit: dBs Input TerminalInput LevelL+RSTEREO L OUTSTEREO R OUTMONO/C OUTPHONES LR SUB IN STEREO L+4OFF +13.5+/-2 +13.5+/-2 +13.5+/-2 - SUB IN STEREO L-16OF

36、F-2.5+/-2 ON-6+/-2-6+/-2 SUB IN STEREO ROFF-2.5+/-2 ON-6+/-2-6+/-2 Table 2-5 Input Terminal MASTER INSERT IN (AUX1 AUX6, G1/A7 G8/A14, STEREO L and R, MONO/C)Unit: dBs Input TerminalInput LevelAUX1AUX6, G1/A7G8/A14, STEREO L, R, MONO/C OUT AUX1AUX6, G1/A7G8/A14,0 +14+/-2 STEREO L, R, MONO/C INSERT I

37、N Table 2-6 Input Terminal TALKBACK INUnit: dBs Input LevelAUX1AUX6ASTEREO L, RAA7/G1A14/G8 OUT MONO/C OUT -60 -10+/-2+6+/-2 Table 2-7 Input Terminal INSERT IN (STEREO L and R, MONO/C)Unit: dBs Input TerminalInput LevelAFLMASTER PFLMATRIXMONITOR(L, R)OUTMATRIX(18) OUT *2 LRC INSERT IN -10OFFOFF +10+

38、/-2 STEREO LON *1OFFOFF +10+/-2 ON 0+/-2 OFFOFFON+10+/-2 INSERT INOFFOFF+10+/-2 STEREO RON *1OFFOFF+10+/-2 ON0+/-2 OFFOFFON+10+/-2 INSERT INOFFOFF+10+/-2 MONO/CON *1OFFOFF +4+/-2+4+/-2 ON -6+/-2-6+/-2 OFFOFFON+10+/-2 Table 2-8 Input Terminal INSERT IN (G1/A7 G8/A14)Unit: dBs InputInput TerminalLevel

39、MONITORMONITORSTEREO L DTEREO R MONO/CMATRIX(18) AFLMONITORSTPANMONO/CLCRMTRXL OUTR OUTOUTOUTOUTOUT *4 PFLcontrol INSERT INON *1OFFOFF -OFFOFFOFF +10+/-2 +10+/-2 *2- G1/A7ON 0+/-2- G8/A14 -10OFFOFFONL- +14+/-2- R- +14+/-2- OFF -ON- +14+/-2- LOFFON *3- +14+/-2- Center- +14+/-2- R- +14+/-2- -OFFON- +1

40、0+/-2 G1/A7 G8/A14 MASTER section (MONITOR MASTER section for MASTER PFL) M2500 65 *1 The AFL LED and the MASTER (CUE) LED in the MASTER section will light up. *2 Measure the G1/A7 input only. *3 The LCR LED will light up. *4 Turn all the G1/A7 G8/A14 Mix level controls of MATRIX (1 8) to the MAX po

41、sition. The level difference between STEREO L, R, MONITOR L, R, MATRIX (1 8) should be 2 dB or less. *1 The AFL LED and the MASTER (CUE) LED in the MASTER section will light up. *2 Measure the AUX1 input only. *3 Turn all the SUB IN L, R Mix level controls of MATRIX (1 to 8) to the MAX position. *4

42、Turn on AUX7 AUX14 one by one. The level difference between MONITOR L, R, MATRIX (1 8) should be 2 dB or less. 3.FREQUENCY RESPONSE In the state as described in 2., apply the signals of 20 Hz and 20kHz frequency, and check that the output level of each output terminal is within the range of +0.5 dB

43、-2.5 dB with 1 kHz used as a reference. Measure STEREO L, R OUT only in Table 2-3 ST CH INPUT. Measure INSERT IN G1/A7 input only in Table 2-8 INSERT IN MATRIX (1 8) OUT. Measure the value via A7 only in Table 2-9 TALKBACK IN MONITOR L OUT. 4.EQ CHANGE CHARACTERISTICS In the state as described in 1,

44、 turn on the EQ switch, move each EQ control and check that the output level of the frequency obtained at STEREO L OUT falls within the range given in Tables 4-1 and 4-2 with the output level obtained when the EQ GAIN control is set at the center click position used as a reference. If the output lev

45、el of the specified frequency is out of the specified range, vary the frequency of the applying signal within 20% of the specified frequency and check that the output level is as specified in Tables 4-1 and 4-2. Table 2-9 Input Terminal INSERT IN (AUX1 6), TALKBACK IN, MATRIX SUB IN (L, R)Unit: dBs

46、Input terminal Input level Equivalent to MASTERTALKBACKMONITOR LMONITOR RMATRIX (18) AFLPFLassignOUTOUTOUT *3 INSERT IN -10AUX16OFFOFF +10+/-2 +10+/-2 *2 - (AUX16)ON *1ON 0+/-2 - - TALKBACK -60AUX714OFFA7-A10, +12+/-2 - - INON *1 *4ONA11-A14 ON +6+/-2 - - MATRIX SUB-6OFFOFF - - 0+/-2 IN LMTRX18 -6+/-2 - - ON *1ONOFF0+/-2 - - MATRIX SUBOFFOFF - -