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1、SERVICE MANUAL SY 011451 HAMAMATSU,JAPAN 0.32K-5351 I Printed in Japan98.12 CONTENTS PANEL LAYOUT.3 SPECIFICATIONS.4 CIRCUIT BOARD LAYOUT .6 WIRING 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 verw
2、ijderen van de backup batterij deze beschrijving. WARNING Components having special characteristics are marked and must be replaced with parts having specification equal to those originally installed. 2 RadioFans.CN 收音机爱 好者资料库 MU128 3 1. A/D INPUT1,2 jacks 2. A/D INPUT VOLUME control 3. VOLUME contr
3、ol 4. STAND BY/ON switch (Power Switch) 5. MIDI IN A (front panel) 6. PHONES jack 7. Voice Category buttons 8. MODE button 9. PLAY button 0. EDIT button A. UTIL (UTILITY) button B. EFFECT button C. EQ button D. MUTE/SOLO button E. ENTER button F. EXIT button G. PART / buttons H. SELECT / buttons I.V
4、ALUE / buttons J. Data dial K. SELECT button L. PART GROUP button M. Display N. LEDs 1. MIDI terminals 2. HOST SELECT switch 3. TO HOST terminals 4. DC IN terminals 5. Power cord hook 6. OUTPUT L,R jacks (Left,Right) 7. INPUT L,R jacks (Left,Right) 8. XG Plug-in board expansion bay l Front Panel lRe
5、ar Panel RadioFans.CN 收音机爱 好者资料库 MU128 4 1. FUNCTION Tone generation MethodAWM2 (Advanced Wave Memory 2) Maximum Simultaneous Polyphony128-note Sound Module ModesXG, TG300B and Performance Multi-timbral Capacity64-part (on 64 MIDI channels; with dynamic Voice allocation) EffectsSeven sections of mul
6、ti-effects: Reverb(12 Types), Chorus(14 Types),Variation (70 Types), Insertion 1/2 (43 Types),Multi EQ(4 Types), and Part EQ (1 Type) InterfaceDirect connection to host computer port (RS-232C,RS-422); MIDI terminals allow connection to MIDI sequencer or MIDI controller. 2. COMPONENT Internal VoiceNo
7、rmal VoiceTotal1342 XG1099 TG300B664 Drum VoiceTotal47 XG37 TG300B10 Perfomance ProgramsUp to four Voices plus all effect settings can be memorized to a Performance. Preset Programs100 User Programs100 EffectsReverb12 Types Chorus14 Types Variation70 Types Insertion 1/243 Types Multi EQ5 Types 3. DI
8、SPLAY LCDCustom back-lit LCD LED10 4. CONTROLS PLAYUTILMODE EDITEFFECTEQ MUTE/SOLOENTEREXIT PART PART SELECT SELECT VALUE VALUE HOST SELECT STAND BY/ON VOLUME A/D INPUT VOLUME SELECTPART GROUP PianoChrom.perc.OrganGuitarBassStringsEnsembleBrassReedPipeSynth lead Synth padSynth effectsEthnicPercussiv
9、eSFXModel excl.Drum MU128 5 5. JACKS and TERMINALS Front panel:PHONES jack (stereo mini pin), A/D INPUT 1, 2, jacks (1/4” mono), MIDI IN-A terminal Rear panel:INPUT L, R jacks (Left,Right), OUTPUT L, R jacks (Left,Right), DC IN jack, TO HOST terminal, HOST SELECT switch, MIDI IN-A/B, MIDI OUT, and M
10、IDI THRU terminals, XG Plug-in board expansion bay 6. POWER SUPPLY Yamaha PA-6 AC Adaptor (included) 7. DIMENSIONS (W X D X H) 219.5(W)X229.5(D)X91.1(H)mm (8-5/8X9X3-1/2) 8. WEIGHT 1.9Kg(4 lbs., 3 oz.) 9. SUPPLIED ACCESSORIES Owners Manual, Sound List Book & MIDI Data Book AC Adaptor (PA-6) CD-ROM(X
11、G tools) 10. OPTIONAL ACCESSORIES XG Plug-in board Virtual Acoustic Plug-in Board PLG100-VL Vocal Harmony Plug-in Board PLG100-VH Advanced DX/TX Plug-in Board PLG100-DX 11. OUTPUT LEVEL Refer to the TEST 14 &15 of the TEST PROGRAM on page 22 & 23. MU128 6 CN1 CN2 CN4 CN9 CN5 CN6 CN7 CN8 CN10 CN12 CN
12、11 CN13 2NC-V248430 (Rear) l Bottom View l Front View (Front) 7 7 7 7 7 MU128MU128MU128MU128MU128 28C99-8812612 LCDLCD 28CA1-8812501 MU128MU128MU128MU128MU128 8 8 8 8 8 1.Bottom Assembly 1-1Remove the four (4) screws marked 60, the two (2) screws marked 70 and the two (2) screws marked 80. The botto
13、m assembly can then be removed. (Fig. 1) 60:Bind Head Tapping Screw-B 3.0X8 MFNI33 (VF646900) 70:Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230) 80:Flat Head Tapping Screw-C 3.0X8 MFNI33 (V2500600) (Fig. 1) 2.Top Assembly 2-1Remove the bottom assembly. (See Procedure 1.) 2-2Remove the A/D INPUT k
14、nob. 2-3Remove the two (2) screws marked 30. The Top Assembly can then be removed. (Fig. 2) * When assembling the bottom assembly, tighten the screws in the order shown in the figure below. (Fig. 2) 3.DM Circuit Board and ADVR1 Circuit Board 3-1Remove the bottom assembly. (See Procedure 1.) 3-2Remov
15、e the Top assembly. (See Procedure 2.) 3-3Remove the four(4) screws marked T40a. The DM circuit board can then be removed. (Fig. 3) 3-4Remove the two(2) screws marked T40b. The ADVR1 circuit board can then be removed. (Fig. 3) 30:Flat Head Tapping Screw-C 3.0X8 MFNI33 (V2500600)T40:Bind Head Tapping
16、 Screw-B 3.0X6 MFZN2BL (EP600230) (Fig. 3) (Bottom Veiw) (Top View) (Front) (Rear) (Rear View) (Bottom)(Top) (Bottom View) (Front) (Front) (Rear) (Rear) 5.PSW Connector Assembly, PMD Circuit Board and ADMVR2 Circuit Board 4.LEDSW1 Circuit Board and LEDSW2 Circuit Board and LCD and RE Circuit Board (
17、Fig. 5) (Fig. 4) 4-1Remove the bottom assembly. (See Procedure 1.) 4-2Remove the two (2) screws marked 30. The front assembly can then be removed. (Fig. 2) 4-3Remove the five (5) screws marked 100. The LEDSW1 circuit board can then be removed. (Fig. 4) 4-4Remove the four (4) screws marked 80A. The L
18、EDSW2 circuit board can then be removed. (Fig. 4) 4-5Remove the four (4) screws marked 80B. The LED can then be removed. (Fig. 4) 4-6Remove the two (2) screws marked 120 and the encoder knob. The RE circuit board can then be 40:Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230) 50:Bind Head Tapping
19、Screw-B 2.6X10 MFZN2Y (VD791000) 80:Bind Head Tapping Screw-B 2.6X10 MFZN2Y (VD791000) 20d:Bind Head Tapping Screw-B 2.6X6 MFZN2Y (VC069600) (INSIDE VIEW) * Connection of the cable bundles to the CN9 of the DM circuit board is shown in Fig 6-1. (Fig. 6-1) 100:Bind Head Tapping Screw-B 2.6X6 MFZN2Y (
20、VC069600) 120:Bind Head Tapping Screw-B 3.0X6 MFZN2BL (EP600230) (Fig. 6-2) Front Assembly * Be careful not to injure your fingers for the sharp edge of the rear shield. 5-1Remove the bottom assembly. (See Procedure 1.) 5-2Remove the front assembly. (See Procedure 4-2.) 5-3Remove the volume knob. 5-
21、4Remove the two (2) screws marked 40 and the screw marked 50. The PSW connector assem- bly and the JACK assembly can then be removed. (Fig. 4) 5-5Remove the two (2) screws marked 20d. The PMD circuit board, the ADMVR2 circuit board and the front shield can then be removed. (Fig. 5) 5-6Remove the fro
22、nt shield marked 50 from the PMD circuit board. (Fig. 5) 3-5Melt the solder on the four(4) points marked A in figure 6-2 and remove the rear shield. (Fig. 3) removed. (Fig. 4) MU128 9 lInstalling the Plug-in Board 1. Turn off the power switches of the MU128 and any connected devices. Also remove all
23、 connected cables from the MU128, and unplug the power adaptor. l When installing/uninstalling an XG Plug-in board, make sure to let the installed board(s) cool down for a while after turning the power switch off. l Make sure to unplug the power adaptor from the MU128 before installing/uninstalling
24、the board. Attempting to install/ uninstall the board while power adaptor is still connected may damage the board and/or the MU128. 2. Remove the large screw from the expansion bay cover on the rear panel, and remove the cover (as shown below). lSince the screw is tightened securely at the factory,
25、you may need to use a screwdriver to loosen it at first, so that it can be fastened and removed simply by using your fingers. 3. Remove the XG Plug-in board from its protective packaging. Before handling the XG Plug-in board, make sure to discharge any static electricity from your body or clothes by
26、 touching a grounded metal surface. Also be careful not to touch any parts or connectors of the board. 4. Insert the board along the guide rails about two-thirds of the way inside the MU128, with the connector side face down and toward you (as shown below). Make sure to insert it slowly and gently,
27、keeping the edges of the board inside the proper guide rails, as shown in the illustration. With keeping the board in place, plug in one of the three cable connectors to the connector on the XG Plug-in board. Any one of the cable connectors can be used. The logical board assignment in the MU128 (PLG
28、-1 -3) is set automatically to the following order: 1) PLG100- VL, 2) PLG100-DX, 3) PLG100-VH. MU128 10 Carefully plug in the cable connector to the XG Plug-in connector as shown below, matching the two notches on the cable connector with the sockets on the board. Firmly press the connectors togethe
29、r until they lock. 5. Slowly and gently insert the rest of the XG Plug-in board into the expansion bay. 6. Replace the cover with the screw you removed in step #2. Latch the hinges on the cover to the inside of the expansion bay and secure the cover to the rear panel with the screw. Press the cover
30、down with your hand for the sponge cushion on the back of the cover to hold the installed board(s) securely in place. MIDI THRUOUTIN-AIN-B HOST SELECT MIDIMac PC-2 PC-1TO HOSTDC IN OUTPUTINPUT L R SER NO. MIDI THRUOUTIN-AIN-B HOST SELECT MIDIMac PC-2 PC-1TO HOSTDC IN OUTPUTINPUT L R SER NO. 11 MU128
31、MU128MU128MU128MU128 DM Circuit Board Component sidePattern side MIDI THRUOUTIN-AIN-BHOST SELECTTO HOSTDC-IN OUTPUT L/R INPUT L/R to PMD-CN1 CN2 : CN9 : to LEDSW1-CN8 to LEDSW1-CN10 CN8 : to LEDSW2-CN3 CN6 : to RE-CN9 CN1,4,5 : to Plug in board to LCD CN7 : CN13 : to Power SW Assembly CN11 : to PMD-
32、CN2 CN12 : to ADMVR2-CN5 CN10 : to ADVR1-CN7 2NA1-V227130Note: See parts list for details of circuit board component parts. =Connection of the cable bundles to the CN9 of the DM circuit board is shown right. 0 MU128MU128MU128MU128MU128 12 LEDSW1 Circuit Board PART GROUP to DM-CN9 EDIT EFECT EQ PLAY
33、UTIL MODE MUTE/ SOLO ENTER EXIT PART - PART + SELECT VALUE + VALUE - SELECT to DM-CN9 SELECT Component side Synth effectsEthnicPercusiveSFXModel excl.Drum EnsembleBrassReedPipeSynth leadSynth pad PianoChrom.perc.OrganGuitarBassStrings MUPLG-1PLG-2PLG-3to DM-CN8 Component side Pattern side LEDSW2 Cir
34、cuit Board A/D INPUT ADVR1 Circuit Board 1 to DM-CN10 to ADMVR2-CN4 Component side Pattern side 2 ADMVR2 Circuit Board VOLUME Component side Pattern sidePattern side Component side PMD Circuit Board RE Circuit Board to DM-CN11 to DM-CN2 PHONESMIDI IN A to DM-CN6 (Dial) Component sidePattern side Not
35、e : See parts list for details of circuit board component parts. 2NA1-V227140 to DM-CN12 to ADVR1-CN6 Pattern side 2 MU128 13 = HD6437043E00F (XS936A00) CPU PIN NO. NAMEI/OFUNCTION PIN NO. NAMEI/OFUNCTION 1/WRHHOHH write73D15I/O 2PE14I/OPort E74D14I/OData bus 3/WRHLONC75D13I/O 4PA21IFlash/WE write c
36、heck (RY/BY)76D12I/O 5PE15I/OLCD, SW, LED Data control (DB7)77VCC-Power supply 6VSSIGround78D11I/OData bus 7A0O79VSS-Ground 8A1O80D10I/O 9A2OAddress bus81D9I/O 10A3O82D8I/OData bus 11A4O83D7I/O 12VCC-Power supply84D6I/O 13A5OAddress bus85VCC-Power supply 14VSS-Ground86D5I/OData bus 15A6O87VSS-Ground
37、 16A7O88D4I/O 17A8O89D3I/O 18A9O90D2I/OData bus 19A10O91D1I/O 20A11OAddress bus92D0I/O 21A12O93VSS-Ground 22A13O94XTAL-Crystal oscillator 23A14O95MD3-Mode select 24A15O96EXTAL-Crystal oscillator 25A16O97MD2-Mode select 26VCC-Power supply98NMI-Non-maskable interrupt 27A17OAddress bus99VCC-Power suppl
38、y 28VSS-Ground100PA16IRotary encoder (REB) 29PA20OLED control101PA17IRotary encoder (REA) 30PA19ONC102MD1-Mode select 31PB2OPB select (SW1)103MD0-Mode select 32PB3OPB select (SW2)104PLLVCC-PLL power supply 33PA18OSW data read (SWD)105PLLCAP-PLL capacitor 34PB4OPB select (SW3)106PLLVSS-PLL ground 35V
39、SS-Ground107PA15ORotary encoder (RER) 36PB5OPB select (SW4)108/RES-Reset 37A18O109PE0OLCD control (LCD-R/W) 38A19OAddress bus110PE1ONC 39A20O111PE2OLCD control (LCD-RS) 40VCC-Power supply112VCC-Power supply 41A21OAddress bus113PE3OLatch for reset (LCREAD) 42VSS-Ground114PE4OLCD control (LCD-E) 43/RD
40、ORead115PE5O1M clock for mac. 44/WDTOVF-NC116PE6OClock for PB serial (SICLK) 45D31I/OData bus117VSS-Ground 46D30I/OData bus118AN0IA/D input level (R) 47/WRHOHigh write119AN1I 48/WRLOLow write120AN2IA/D input level (L) 49/CS1OChip select for SRAM121AN3IA/D jack check 50/CS0OChip select for system Rom
41、122AN4IHost sw position 51PA9OPB select (SW6)123AN5IOff-line detection 52PA8OPB select (SW5)124AVSS-Analog ground 53/CS3OChip select for serial interface125AN6IBattery check 54/CS2OChip select for SWP30126AN7IModel check 55VSS-Ground127AVREFIA/D refference voltage 56D29I/O128AVCCIAnalog power supply
42、 57D28I/O129VSS-Ground 58D27I/OData bus130RXD0IMIDI-IN 59D26I/O131TXD0MIDI-OUT 60D25I/O132/IRQ0ISerial ready for PB 61VSS-Ground133RXD1IMIDI-IN 62D24I/OData bus134TXD1OMIDI-OUT 63VCC-Power supply135VCC-Power supply 64D23I/O136PA5OMIDI-IN A front/rear select 65D22I/O137PE7OSW storobe (SWS) 66D21I/O13
43、8PE8I/OLCD, SW, LED data control (DB0) 67D20I/OData bus139PE9I/OLCD, SW, LED data control (DB1) 68D19I/O140PE10I/OLCD, SW, LED data control (DB2) 69D18I/O141VSS-Ground 70D17I/O142PE11I/OLCD, SW, LED data control (DB3) 71VSS-Ground143PE12I/OLCD, SW, LED data control (DB4) 72D16I/OData bus144PE13I/OLC
44、D, SW, LED data control (DB5) MU128 14 =TC203C760HF-002 (XS725A00) SWP30B (AWM Tone Generator coped with MEG) Standard Wave Processor PIN NO. NAMEI/OFUNCTION PIN NO. NAMEI/OFUNCTION 1Vss(Ground)121VSS(Ground) 2CA0I122HMD0I/O 3CA1I123HMD1I/O 4CA2I124HMD2I/O 5CA3I125HMD3I/O 6CA4I126HMD4I/O 7CA5IAddres
45、s bus of internal register127HMD5I/O 8CA6I128HMD6I/OWave memory data bus (Upper 16 bits) 9CA7I129HMD7I/O 10CA8I130HMD8I/O 11CA9I131HMD9I/O 12CA10I132HMD10I/O 13CA11I133HMD11I/O 14VSS(Ground)134HMD12I/O 15CD0I/O135HMD13I/O 16CD1I/O136HMD14I/O 17CD2I/O137HMD15I/O 18CD3I/O138VSS(Ground) 19CD4I/O139HMA0
46、O 20CD5I/O140HMA1O 21CD6I/O141HMA2O 22CD7I/O142HMA3O 23CD8I/OData bus of internal register143HMA4O 24CD9I/O144HMA5O 25CD10I/O145HMA6O 26CD11I/O146HMA7O 27CD12I/O147HMA8O 28CD13I/O148HMA9O 29CD14I/O149HMA10O 30VDD(Power supply)150VDD(Power supply) 31VSS(Ground)151VSS(Ground) 32CD15I/O152HMA11O 33CSNI
47、Chip select153HMA12OWave memory address bus 34WRNIWrite strobe154HMA13O 35RDNIRead strobe155HMA14O 36VDD(Power supply)156HMA15O 37SYSH0O157HMA16O 38SYSH1O158HMA17O 39SYSH2O159HMA18O 40SYSH3ONSYS/LNSYS upper 16 bits output160HMA19O 41SYSH4O161HMA20O 42SYSH5O162HMA21O 43SYSH6O163HMA22O 44SYSH7O164HMA2
48、3O 45KONO0O165HMA24O 46KONO1OKey on data166VSS(Ground) 47KONO2O167MRASNORAS when DRAM(s) is connected to wave memory 48KONO3O168MCASNOCAS when DRAM(s) is connected to wave memory 49VSS(Ground)169MOENOWave memory output enable 50SYSL0I/O170MWENOWave memory write enable 51SYSL1I/O171VSS(Ground) 52SYSL
49、2I/O172LMD0I/O 53SYSL3I/ONSYS input/LNSYS output lower 8 bits173LMD1I/O 54SYSL4I/O174LMD2I/O 55SYSL5I/O175LMD3I/O 56SYSL6I/O176LMD4I/O 57SYSL7I/O177LMD5I/O 58KONI0I178LMD6I/O 59KONI1IKey on data input179LMD7I/OWave memory data bus (Lower 16 bits) 60VDDI(Power supply)180VDD(Power supply) 61VSS(Ground)1
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