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Yamaha A4000, Service Manual, Page: 5 / 61

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Yamaha A4000 Service Manual Download Page 5

A5000/A4000

5

 CIRCUIT BOARD LAYOUT

Summary of Contents for A4000

Page 1: ...YOUT 5 BLOCK DIAGRAM 6 DISASSEMBLY PROCEDURE 7 LSI PIN DESCRIPTION 10 IC BLOCK DIAGRAM 16 TEST PROGRAM 19 ERROR MASSAGE 31 MIDI DATA FORMAT 32 MIDIIMPLEMENTATIONCHART 43 PARTS LIST OVERALL CIRCUIT DIAGRAM CIRCUITBOARDS SERVICE MANUAL SY 011491 A5000 19991210 229000 A4000 19991210 149000 PROFESSIONAL SAMPLER ...

Page 2: ...anges in specification sre subject to change without notice or obligation to retrofit Should any discrepancy appear to exist please contact the distributor s Service Division WARNING Static discharges can destroy expensive components Discharge any static electricity your body may have accumulated by grounding yourself to the ground buss in the unit heavy gauge black wires connect to this buss IMPO...

Page 3: ...el POWER switch INPUT L R jacks phone x 2 REC VOLUME L R shared MASTER VOLUME L R shared STEREO OUT PHONES shared PHONES OUTPUT jack Knobs 1 5 Mode buttons PLAY EDIT REC DISK UTILITY Function buttons six buttons COMMAND EXIT button ASSIGNABLE button AUDITION button LCD 320 x 80 dot LED backlight LCD contrast control 3 5 2HD 2DD dual mode floppy disk drive Rear panel STEREO OUT L MONO R phone jack ...

Page 4: ...ut L Mono R jacks 5 SCSI connector 6 Optical In Out connectors 7 Digital In Out connectors 8 Assignable Out jacks 1 6 1 Master Vol Master Volume 2 Rec Vol Recording Volume 3 Phones jack 4 Input L Input R jacks 5 LCD Contrast 6 Display 7 Knobs 1 5 8 Mode buttons 9 Function buttons F1 F6 10 Command Exit button 11 Assignable button 12 Audition button 13 Floppy Disk Drive 14 Power switch ...

Page 5: ...A5000 A4000 5 CIRCUIT BOARD LAYOUT ...

Page 6: ...A5000 A4000 6 BLOCK DIAGRAM 28CA1 8815099 ...

Page 7: ... PS Cover Ass y PS 4 Fan Ass y 4 220 120 130 140 150 190 90 100 30 50 60 L40 L50 Bind Head Tapping Screw B 3 0X6 MFZN2Y EP600130 fig 2 Bind Head Tapping Screw B 3 0X6 MFZN2Y EP600130 fig 3 Bonding Head Screw B 3 0X10 MFZN2BL VQ049800 fig 3 Bind Head Tapping Screw P 3 0X8 MFZN2BL EP630220 fig 3 Pan Head Screw 2 5X6 SUS VV342700 fig 3 Bind Head Tapping Screw B 3 0X6 MFZN2Y EP600130 fig 2 Bonding Hea...

Page 8: ...A5000 A4000 8 3 Front Panel 3 1 Remove the knob marked 440 450 460 3 2 Remove the three 3 screws marked 410 And remove the Front Panel from the Lower Case Assembly Fig 2 Fig 3 Fig 4 ...

Page 9: ...f No Screw Qty JK RE VR PNA LCD S230 L170 L170 S140 S70 S110 Hexagonal Nut 14X2 M12 ES200210 Bind Head Tapping B 3 0X6 MFZN2Y EP600130 Washer Nut Bind Head Tapping B 3 0X6 MFZN2Y EP600130 Bind Head Tapping B 3 0X6 MFZN2Y EP600130 Cup Tapping Screw B 3 0X6 MFZN2Y V2644100 Bind Head Tapping B 3 0X6 MFZN2Y EP600130 3 2 5 5 2 4 4 4 Circuit Boards and Unit ...

Page 10: ...KONI1 I Key on data input 179 LMD7 I O Wave memory data bus Lower 16 bits 60 VDD Power supply 180 VDD Power supply 61 VSS Ground 181 VSS Ground 62 KONI2 I 182 LMD8 I O 63 KONI3 I 183 LMD9 I O 64 DAC0 O DAC output 184 LMD10 I O 65 DAC1 O 185 LMD11 I O 66 WCLK O DAC0 DAC1 word clock 186 LMD12 I O 67 MELO0 O 187 LMD13 I O 68 MELO1 O 188 LMD14 I O 69 MELO2 O 189 LMD15 I O 70 MELO3 O MEL wave data outp...

Page 11: ...em DRAM 0 6 LMA19 I 46 HDRAS1 O RAS for HiMem DRAM 1 7 LMA18 I 47 GND Ground 8 HMA24 I 48 VDD Power Supply 9 HMA23 I High Memory Address 49 LDRAS0 O RAS for LoMem DRAM 0 10 HMA22 I 50 LDRAS1 O RAS for LoMem DRAM 1 11 HMA21 I 51 LMA1 I Low Memory Address 12 GND Ground 52 LMA0 I 13 HMA20 I 53 GND No 53 14 HMA19 I High Memory Address 54 LMA1X O Low Memory Address Exchanged 15 HMA18 I 55 LMA0X O 16 RA...

Page 12: ...O TG Reset Signal 26 GND Ground 66 P7 I O 27 D10 I O Data Bus 67 P6 I O 28 D11 I O 68 P5 I O 29 GND Ground 69 P4 I O I O Port 30 VDD Power Supply 70 P3 I O 31 D12 I O Data Bus 71 P2 I O 32 D13 I O 72 P1 I O 33 GND Ground 73 P0 I O 34 D14 I O Data Bus 74 OCSN I Option Chip Select0 35 D15 I O 75 ODACKN I Option DMA Acknowledge 36 A1 I 76 ODDIR I Option DMA Direction 37 A2 I Address 77 OBOEN O Option...

Page 13: ... 30 XD3 O X driver data bus 60 NC HD63266F XI939A00 FDC Floppy Disk Controller PIN NO NAME I O FUNCTION PIN NO NAME I O FUNCTION 1 8 5 I Data transmission speed 33 TRKO I Track 00 signal 2 XTALSET I Clock select 34 INDEX I Index signal 3 RESET I Rest 35 RDATA I Read data input from FDD 4 E RD I Enable Read 36 XTAL2 Clock 5 RW WR I Read write Write 37 EXTAL2 6 CS I Chip select 38 NC 7 DACK I DMA ac...

Page 14: ...ress strobe high 106 PLLVSS I PLL ground 35 VSS Ground 107 CK I O Clock 36 RDWR O DRAM read write 108 RES I Reset 37 A18 O 109 DREQ0 I DMA transfer request 38 A19 O Address bus 110 DRAK0 I O DMA transfer strobe 39 A20 O 111 DREQ1 I O DMA transfer request 1 40 VCC I Power supply 112 VCC I Power supply 41 A21 O Address bus 113 PE3 I O 42 VSS I Ground 114 PE4 I O Port E 43 RD O Read 115 PE5 I O 44 WD...

Page 15: ... HDB2 I O Data bus 69 D0 I O 30 HDB3 I O MB87034 data memory 70 D1 I O Data bus 31 HDB4 I O 71 D2 I O MB87034 internal register 32 HDB5 I O 72 D3 I O 33 VDD Power supply 73 VDD Power supply 34 HDB6 I O 74 D4 I O 35 HDB7 I O Data bus 75 D5 I O 36 HDBP I O 76 D6 I O Data bus 37 A0 I 77 D7 I O 38 A1 I Resistor select 78 DP I O 39 A2 I 79 DP0 O Odd number parity of data bus 40 A3 I 80 INTR O Interrupt...

Page 16: ...A5000 A4000 16 IC BLOCK DIAGRAM ...

Page 17: ...A5000 A4000 17 ...

Page 18: ...A5000 A4000 18 ...

Page 19: ...Hz 1 Hz less than 0 5 distortion 0 3 dBm 20 ASSIGNABLE OUT 3 1 kHz 1 Hz less than 0 5 distortion 0 3 dBm 21 ASSIGNABLE OUT 4 1 kHz 1 Hz less than 0 5 distortion 0 3 dBm 22 ASSIGNABLE OUT 5 1 kHz 1 Hz less than 0 5 distortion 0 3 dBm 23 ASSIGNABLE OUT 6 1 kHz 1 Hz less than 0 5 distortion 0 3 dBm 24 DIGITAL OPTICAL OUT Lintning measuring 25 DIGITAL IN 1 kHz 5 Hz less than 0 2 distortion 17 4 dBm 26...

Page 20: ... the auto test is executed at the ENC4 AUTO the test is executed in order of the number If the test showed the ENC5 STOP while the execution of the test is pushed the test is stopped If the error is happened the error is displayed and the test is stopped If the ENC5 GO switch is pushed only the stopped item test is executed Proceeding through the test when the NG is judged According to each of the...

Page 21: ... After pressing the ENC5 STOP the test will be finished 01 LCD The three patterns are all dots light all dots go out and the STOP is displayed This pattern rotates in internals of one second Check all dots is on and off on the LCD RESULTOFTHETEST OK NG No display ENDOFTHETEST After pressing the ENC5 STOP the test will be displayed and finished 02 LED SWITCH Execute the test As the required switch ...

Page 22: ...M Flash ROM Check that OK is displayed RESULTOFTHETEST OK NG read error of DRAM NG refresh error of DRAM NG read error of EEPROM ENDOFTEST After displaying the test will be finished 05 WAVE RAM Perform the read write test of WAVE RAM the DRAM for wave form stuck the circuit board Check that OK is displayed RESULTOFTHETEST OK NG ENDOFTHETEST After displaying the result the test will be finished 06 ...

Page 23: ...rtion 7 3 dBm 33 ohm load PHONES R less than 60 dBm 33 ohm load While sounding the LCD shows as belows 08 DRIVE 1SECTOR IDE Connect the HDD to the IDE Bus and execute by pressing the ENC5 MANUAL The MASTER 0 SLAVE 1 of the drive testing on the ENC3 can be selected The MASTER 0 SLAVE 1 of the drive testing on the ENC3 can be selected The default ID can be set by pressing the ENC3 ID4 The data on th...

Page 24: ... R less than 55 dBm RESULTOFTHETEST OK NG ENDOFTHETEST After pushing the ENC5 STOP the test will be finished 12 1 kHz STEREO OUT R Insert the appropriate phone plugs into the STEREO OUT L R ASSIGNABLE OUT L R PHONES terminals Check the output by using an oscilloscope an AC voltmeter with JIS C filter and a distortion factor meter The REC GAIN and the MASTER VOL UME control must be set at maxium fo...

Page 25: ...e executing the LCD will show the following test condition While sounding While muting RESULTOFTHETEST OK NG ENDOFTHETEST After displaying the result the test will be finished 18 ASSIGNABLE OUT 1 Insert the appropriate phone plugs into the ASSIGNABLE OUT 1 terminal Check the output wave form and the output level of each output by using an oscilloscope an AC voltmeter with JIS C filter and a distor...

Page 26: ...AC voltmeter with JIS C filter and a distortion factor meter ASSIGNABLE OUT 5 1 kHz 1 Hz sine wave less than 0 5 distortion 0 3 dBm 10 k ohm load ASSIGNABLE OUT 6 less than 70 dBm 10 k ohm load While sounding the LCD shows as below RESULTOFTHETEST No display ENDOFTHETEST After pressing the ENC5 STOP the test will be finished 23 ASSIGNABLE OUT 6 Insert the appropriate phone plugs into the ASSIGNABL...

Page 27: ...5 STOP the test will be finished 27 mLAN I F 26pin Execute the test Command to execute to the mLAN circuit board and automatically perform the following items in serial order Insert the appropriate phone plugs into the STEREO OUT L R terminal Check by listening that the notes of each output are generated by using a speaker 1 Test of connecting board Find the mLAN board is in or out 2 Board test en...

Page 28: ... SWP30 access error ENDOFTHETEST After displaying the result the test will be finished After pressing the ENC5 STOP the test will be finished 53 DRIVE 100MB VERIFY SCSI Connect the HDD to the SCSI Bus and execute the read write test of the 100MB Execute by pressing the ENC5 MANUAL and check that OK is displayed The SCSI ID of the drive can be selected by testing on the ENC3 The default ID is the I...

Page 29: ...ecute the test Check the test result on the LCD RESULTOFTHETEST OK NG ENDOFTHETEST After displaying the result the test will be finished 98 FACTORY SET Set the A5000 A4000 in the factory shipping data RESULTOFTHETEST Execute the factory set and display the following screen ENDOFTHETEST After displaying the result the test will be finished 99 EXIT Execute the EXIT and finish the test D OTHERS 90 SC...

Page 30: ...ss than 62 dBm 33 ohm load 93 POWER SUPPLY VOLTAGE Turning on the A5000 A4000 power switch test can start after more than 5 seconds The voltage can be measured the both terminals of the capacitor C36 on the DM circuit board Check the voltage of the switch fills the following Voltage 5 00 0 25 V 94 POWER ON OFF MUTE Turning on and off check the output of the STEREO OUT L R PHONES ASSGNABLE OUT L R ...

Page 31: ...cified name already exists Non existent track or index The audio CD loaded into the external CD ROM drive does not have the specified track number or index number Not enough disk area or too many items There is not enough disk space to complete the operation or the total number of samples sample banks which can be saved to disk has been exeeded Param memory full or too many samples The operation c...

Page 32: ...r F0 43 3n 58 04 Paramter Value Request object link F0 43 2n 7A Dump Request Bulk Protect SW F0 43 0n 7A System Parameter Bulk enable disable LM__0474SY 2 F0 43 0n 7A Program Bulk LM__0474PG 2 F0 43 0n 7A Sample Bank Bulk LM__0474SB 2 F0 43 0n 7A Sample Bulk LM__0474SP 2 F0 43 0n 7A Wave Data Bulk LM__0474WD 2 F0 43 0n 7A Sequence Bulk LM__0474SQ 2 1 For the A5000 one of the A B inputs can be sele...

Page 33: ...G8 Velocity range 0 127 2 1 3 Polyphonicaftertouch Not received 2 1 4 Control changes The following parameters can be controlled Parameters which function for each program Parameters which function for each MIDI channel of a program Parameters marked by depend on the Sample Control settings 2 1 5 Mode messages Messages which function always A5000 only A5000 only A5000 only A5000 only A5000 only A5...

Page 34: ...essage is transmitted and received 4 1 4 Cancel 0 01110000 F0 1 01111110 7E 2 0nnnnnnn nnnnnnn Channel Number 3 01111101 7D 4 0ppppppp ppppppp Packet number 5 01110111 F7 This message indicates that a dump is to be terminated Packet number indicates the packet which was terminated This message is transmitted and received 4 1 5 Wait 0 01110000 F0 1 01111110 7E 2 0nnnnnnn nnnnnnn Channel Number 3 01...

Page 35: ...ect parameter first the object is selected via parameter change object select reception then the value is changed via parameter change object edit reception The object selection remains effective until the next object select is re ceived thus a number of changes to the value of the same object can be carried through successive object edit reception Transmitted when a parameter value request is rec...

Page 36: ...n Positive numbers are rotation toward the right and negative numbers are rotation toward the left This message is received only 5 3 5 Parameter request object 0 11110000 F0 1 01000011 43 2 0011nnnn nnnn Device Number 3 01011000 58 g 22 h 0 4 00000001 01 5 0ppppppp parameter number P1 P6 6byte 10 0ppppppp 11 11110111 F7 This message requests transmission of the parameter of the specified object as...

Page 37: ... reset note 2 0094 US 0 999 number of assigned samples 1 0096 120byte Effect Parameter 3 effect1 3 0216 16byte reserved 0232 120byte Effect Parameter 3 effect4 6 A5000 only 0352 16byte Control 4 program control1 4 0368 US b b0 MIDI channel B01 controller reset b15 MIDI channel B16 controller reset A5000 only 0370 US b b0 MIDI channel B01 note on normal toggle b15 MIDI channel B16 note on normal to...

Page 38: ...C 127 PEG init level 0141 SC 127 PEG attack level 0142 SC 127 PEG sustain level 0143 SC 127 PEG release level 0144 SC 7 PEG rate key scaling 0145 SC 63 PEG rate velocity sensitivity offset data size value name 0000 UC 0 126 control device 0001 UC 0 m control function 1 0002 UC 0 3 control type 0003 SC 63 control range 0146 SC 63 PEG level velocity sensitivity 0147 UC 63 PEG range 0148 UC 0 127 AEG...

Page 39: ... US reserved 0482 US b b15 12 effect type1 favorite parameter1 b11 8 effect type1 favorite parameter2 b7 4 effect type1 favorite parameter3 b3 0 effect type1 favorite parameter4 0484 US 95 b effect type2 96 favorite parameters 0674 US 31 reserved 0736 UC reserved 0737 UC 0 1 effect edit type 0738 UC 0 4 knob2 control type 0739 UC 0 4 knob3 control type 0740 UC 0 4 knob4 control type 0741 UC 0 4 kn...

Page 40: ... 127 effect1 6 output level 6 1 21 0 5 3 SC 63 effect1 6 output pan 6 1 21 0 5 4 UC 0 87 effect1 6 type 6 1 21 0 5 5 0 15 SS effect1 6parameter1 16 6 1 21 0 5 6 UC 0 5 effect1 6 output 6 1 21 0 5 7 SC 126 0 effect1 6 width 6 1 22 0 3 0 UC 0 126 program control device 1 4 1 22 0 3 1 UC 0 128 progam control function 1 4 9 1 22 0 3 2 UC 0 3 program control type 1 4 1 22 0 3 3 SC 63 program control ra...

Page 41: ...ge low high 3 2 12 UC 0 5 loop mode 2 13 UL 0 16777215 wave start address 2 14 0 UL 0 16777215 wave length end start 1 2 15 UL 0 16777215 wave end address start 2 16 UL 0 16777215 loop start address 2 17 0 UL 0 16777215 loop length end start 1 2 18 UL 0 16777215 loop end address start 2 19 SC 63 start address velocity sensitivity 2 20 US 8000 15999 loop tempo 80 00 159 99 2 21 UC 0 16 filter type ...

Page 42: ... 5 UC 0 127 fkey1 6 play velocity 1 1 12 SC 52 76 total EQ low boost gain 1 1 13 UC 4 40 total EQ low boost frequency 1 1 14 SC 52 76 total EQ low gain 1 1 15 UC 4 40 total EQ low frequency 1 1 16 UC 10 120 total EQ low width 1 1 17 SC 52 76 total EQ mid gain 1 1 18 UC 4 58 total EQ mid frequency 1 1 19 UC 10 120 total EQ mid width 1 1 20 SC 52 76 total EQ high gain 1 1 21 UC 28 58 total EQ high f...

Page 43: ...A5000 A4000 43 MIDI IMPLEMENTATION CHART ...

Page 44: ...rican model B British model O Chinese model C Canadian model Q South east Asia model D German model T Taiwan model E European model U U S A model F French model V General export model 110V H North European model W General export model 220V I Indonesian model N X General export model J Japanese model Y Export model CONTENTS OVERALL ASSEMBLY 2 ELECTRICAL PARTS 5 WARNING Components having special cha...

Page 45: ...2 A5000 A4000 OVERALL ASSEMBLY ...

Page 46: ... Bracket Bind Head Tapping Screw B I O Cover Bonding Screw S Connector Assembly Connector Assembly Connector Assembly Connector Assembly Cord Holder Front Panel Assembly Front Panel Assembly Bind Head Tapping Screw B Mode Button Push Rod Knob Knob Knob Knob Top Cover Bonding Screw S Lower Case Assembly Lower Case Assembly Bottom Assembly Bottom Assembly Bottom Cover Bottom Cover Foot Fan Assembly ...

Page 47: ...Assembly Connector Assembly Connector Assembly Circuit Board Connector Assembly Circuit Board Hexagonal Nut Connector Assembly ACCESSORISE AC Cord AC Cord AC Cord AC Cord Adapter AC Cord Connector Assembly Connector Assembly Connector Assembly Connector Assembly CD ROM CD ROM CD ROM CD ROM CD ROM CD ROM CD ROM CD ROM CD ROM CD ROM Floppy Disk Floppy Disk Floppy Disk Floppy Disk PS ACIN PS AC P01CR...

Page 48: ...de Diode Diode Diode Diode Diode Diode Diode Diode Filter chip Filter chip Filter chip Filter chip LC Filter IC IC IC IC IC IC IC IC IC IC IC IC Photo Coupler Photo Coupler IC IC IC IC IC IC IC IC IC IC IC IC IC IC IC IC IC DM DM JK PNA RE VR DM 52045 14P TE PH 14P TE HIF3FC30PA 2 54DSA HIF3FC40PA 2 54DSA HIF3FC 34PA2 54DSA HIF3FC 50PA2 54DSA HIF3FC 50PA2 54DSA FCN 235D050 L L 0G PH 3P TE VH 5P TE...

Page 49: ...EL TC74VHC32F TEL TC7WH04FU TC7WH08FU SN74HC273NSR MB87034PF TC74VHC374F TC74VHC374F TC74VHC74F TC74VHC164F 28F800B5 28F800B5 CY7C136 55NC CY7C136 55NC MSM5118160D 60J MSM5118160D 60J TC7SH04FU TC74VHC138F TC74VHC74F TC74VHC32F TEL HD6437043AE00F AN8612NSB E1 TC74HC245AF TC7SH04FU TC7WH00FU TC7SH04FU TC7SH04FU TC7SH04FU TC74VHC32F TEL TC74VHC74F TC7SH04FU TC7SH08FU TC7SH08FU TC7WH08FU TC7WH08FU TC...

Page 50: ...ay Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Slide Switch Protector Switch Transistor Transistor ...

Page 51: ... 47 35V UUR1V4 47 50V UUR1H4 0 01 16V J 0 0001 50V J 0 47 16V J 100 0 1 10 D 200 0 1 10 D 680 1 10 D 1 0K 1 10 D 1 6K 1 10 D 2 2K 1 10 D 4 7K 1 10 D 10 0K 1 10 D 20 0K 1 10 D 47 0K 1 10 D 100 0K 1 10 D B 470P 50V K F 0 01 50V Z SL 10P 50V D SL 15P 50V J SL 22P 50V J SL 330P 50V J F 0 1 25V Z F 0 1 25V Z CH 5P 50V C CH 7P 50V D 100 0 1 4 J 470 0 1 4 J 0 0 0 0 J 10 0 0 1 J 47 0 0 1 J 68 0 0 1 J 100 ...

Page 52: ... Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Diode Filter chip Filter chip Filter chip Filter chip LC Filter IC IC IC IC IC IC IC IC IC IC IC 220 0 0 1 J 510 0 0 1 J 560 0 0 1 J 1 0K 0 1 J 1 2K 0 1 J 1 5K 0 1 J 3 3K 0 1 J 4 7K 0 1 J 5 6K 0 1 J 8 2K 0 1 J 10 0K 0 1 J 100 0K 0 1 J 220 0K 0 1 J 1 0K 1 2 J 100 0 1 0 J 10 0K 1 4 J DM 4 52045 14P TE PH 13P TE HIF3FC30PA 2 54DSA HIF3FC40P...

Page 53: ...C74VHC138F SN74HC574NSR SN74HC574NSR SN74HC273NSR SN74HC273NSR TC74VHC153F TC74VHC153F TC74VHC164F TC74VHC245F TC74VHC244F TC74VHC245F TC74VHC245F TC74HC245AF TC74HC14AF TP1 TC74VHC04F TC74VHC32F TEL TC74VHC32F TEL TC74VHC11F EL TC74VHC32F TEL TC7WH04FU TC7WH08FU SN74HC273NSR MB87034PF TC74VHC374F TC74VHC374F TC74VHC74F TC74VHC164F TC74VHC74F EL AN8612NSB E1 TC74HC245AF TC7SH04FU TC7WH00FU TC7SH04...

Page 54: ... Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Resistor Array Slide Switch Protector Switch Transistor Transistor Transistor Transistor Transistor Quartz Crystal Unit Quartz Crystal Unit Quartz Crystal Unit Quartz Crystal Unit Quartz Crystal Unit Zener Diode Zener Diode Electrolytic Cap Electrol...

Page 55: ...R1E1 47 35V UUR1V4 47 50V UUR1H4 0 01 16V J 0 47 16V J 100 0 1 10 D 200 0 1 10 D 680 1 10 D 1 0K 1 10 D 1 6K 1 10 D 2 2K 1 10 D 4 7K 1 10 D 10 0K 1 10 D 20 0K 1 10 D 47 0K 1 10 D 100 0K 1 10 D B 470P 50V K F 0 01 50V Z SL 10P 50V D SL 15P 50V J SL 22P 50V J SL 330P 50V J F 0 1 25V Z CH 7P 50V D 100 0 1 4 J 470 0 1 4 J 0 0 0 0 J 10 0 0 1 J 47 0 0 1 J 68 0 0 1 J 100 0 0 1 J 220 0 0 1 J 510 0 0 1 J 5...

Page 56: ...rcuit Board Jumper Wire Connector Assembly Connector Base Post Diode Diode Rotary Encoder Rotary Encoder Carbon Resistor Circuit Board Connector Base Post Connector Base Post Connector Base Post Rotary Variable Resistor Rotary Variable Resistor Rotary Variable Resistor Power Supply Unit Power Supply Unit Push Switch 47 0K 0 1 J 100 0K 0 1 J 220 0K 0 1 J 1 0K 1 2 J 100 0 1 0 J JK PH 8P TE PH 14P TE...

Page 57: ... NO 80 80 80 80 170 L20 S100 A90 VT119800 VB927800 VB928000 VP204400 V3075300 V 4 7 7 3 0 0 V2557100 VQ240200 AC Cord AC Cord AC Cord AC Cord Floppy Disk Drive Fan Assembly LCD Adapter AC Cord J 7A 125V 3P 2 5M CSA VDE BS 3P MF355F 3252MG F LCD KPR 24 J U E B J 06 08 08 10 16 24 06 ...

Page 58: ...O P Q 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 A5000 A4000 A5000 A4000 A5000 A4000 OVERALL CIRCUIT DIAGRAM 1 3 DM 1 2 Note See parts list for details of circuit board component parts 28CC1 8815101 3 Mylar Capacitor Ceramic Capacitor Tantalum Capacitor ...

Page 59: ...O P Q 1 2 3 4 5 6 7 8 9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 A5000 A4000 A5000 A4000 A5000 A4000 OVERALL CIRCUIT DIAGRAM 2 3 DM 2 2 Note See parts list for details of circuit board component parts 28CC1 8815101 3 Mylar Capacitor Ceramic Capacitor Tantalum Capacitor ...

Page 60: ...9 10 11 12 1 2 3 4 5 6 7 8 9 10 11 12 A5000 A4000 A5000 A4000 A5000 A4000 OVERALL CIRCUIT DIAGRAM 3 3 JK RE VR Note See parts list for details of circuit board component parts JK 28CC1 8815102 0 RE 28CC1 8815103 1 VR 28CC1 8815104 0 Mylar Capacitor Ceramic Capacitor Tantalum Capacitor ...

Page 61: ...D Component side ENC5 ENC4 ENC3 ENC2 ENC1 JK CIRCUIT BOARD Component side INPUT R INPUT L PHONES VR CIRCUIT BOARD Component side MASTER VOL REC VOL CONT Pattern side DM 2NA V431200 1 PNA 2NA V431210 0 RE 2NA V431220 1 JK 2NA V431230 5 VR 2NZ V431240 1 Pattern side DM CIRCUIT BOARD Component side SCSI THRU B IN B THRU A OUT IN A R L R L MONO STEREOOUT ASSIGNABLE OUT to mLAN CN1 to IDE 40P to PS CN3...

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