Yamaha PortaTone PSR-350 Service Manual Download Page 1

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SERVICE MANUAL

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CONTENTS

SPECIFICATIONS .............................................................................. 3

PANEL LAYOUT ................................................................................. 4

CIRCUIT BOARD LAYOUT & WIRING .............................................. 6

BLOCK DIAGRAM ............................................................................. 8

DISASSEMBLY PROCEDURE .......................................................... 9

LSI PIN DESCRIPTION ................................................................... 13

IC BLOCK DIAGRAM ....................................................................... 16

CIRCUIT BOARDS .......................................................................... 16

TEST PROGRAM ............................................................................ 25

DATA BACKUP & INITIALIZATION .................................................. 28

MIDI IMPLEMENTATION CHART .................................................... 29

OVERALL CIRCUIT DIAGRAM

PARTS LIST

This document is printed on chlorine free (ECF) paper with soy ink.

1.412K-976

Printed in Japan ’01.05

001653

Summary of Contents for PortaTone PSR-350

Page 1: ...DISASSEMBLY PROCEDURE 9 LSI PIN DESCRIPTION 13 IC BLOCK DIAGRAM 16 CIRCUIT BOARDS 16 TEST PROGRAM 25 DATA BACKUP INITIALIZATION 28 MIDI IMPLEMENTATION CHART 29 OVERALL CIRCUIT DIAGRAM PARTS LIST This document is printed on chlorine free ECF paper with soy ink 1 412K 976 Printed in Japan 01 05 PK 001653 ...

Page 2: ...s in specification are 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 bus in the unit heavy gauge black wires connect to this bus IMPORTANT ...

Page 3: ...controls Lesson R L Octave Transpose Tuning Accompaniment Song Volume Metronome Volume Reverb DSP Harmony Grade Talking MIDI Effects Reverb 8 types DSP 38 types Harmony 26 types Song 100 Songs 5 User Songs Song Clear Track Clear Recording Song User Song 5 Songs Recording Tracks 1 2 3 4 5 CHORD Disk Song Playback Save Load Delete Format MIDI Initial Send Local on off Auxiliary jacks PHONES OUTPUT D...

Page 4: ...PSR 350 4 Top Panel PANEL LAYOUT q w e i o 8 7 9 0 1 2 3 r t A A GrandPno 000 001 4 5 0 2 1 6 7 y y 3 5 4 u 6 A A ...

Page 5: ...on 2 VOICE button 3 PORTABLE GRAND button 9 8 0 1 4 METRONOME button 5 DJ button 6 Numeric keypad YES and NO but tons 7 ACMP ON OFF A B REPEAT button 8 SYNC STOP button 9 SYNC START PAUSE button 0 START STOP button 1 INTRO ENDING REW button 2 MAIN AUTO FILL FF button 3 TEMPO TAP button 4 SONG MEMORY buttons 5 MUSIC DATABASE button 6 REGISTRATION MEMORY buttons 7 Disk Drive 8 MIDI IN MIDI OUT conne...

Page 6: ...40 Speaker Woofer R Speaker Woofer L MKS5 MK L DM AM MK H AM WH999 AM WH998 Speaker Tweeter R Speaker Tweeter L FDD AM 450 Speaker Tweeter R Speaker Tweeter L PN WH11 L70 PN WH9 TW R TW L PN WH2 460 PN WH1 AM WH3 AM WH2 PN WH10 TW R TW L 450 460 AM WH2 AM WH3 AM WH7 PN WH10 PN WH11 L70 ...

Page 7: ... WH6 PN5 PN 2 CN6 PN 3 CN7 6P V718790 PN WH9 VR1 VR CN9 DM CN501 1 5P V718840 PN WH10 VR2 VR CN10 AM CN801 1 5P V718850 PN WH11 SW PW CN11 AM CN902 1 4P V719860 L70 BLT Back Light AM CN907 1 2P V718810 The parts with in Part No are not available as spare parts 1 Edge mark is adjusted to Pin 1 mark mark 2 Red wire is adjusted to Pin 1 mark mark 3 Connector hook is located at the upper side of FDD 4...

Page 8: ...N2 CN3 CN4 CN5 CN6 CN7 CN01 CN101 CN902 CN903 32M 32M SWX00B CN602 CN601 IC601 CN715 1 CN9 CN10 VR1 MASTER VOLUME CN801 CN909 CN802 CN910 LA4705NA 14 15 NJM78L05A CN901 CN907 CN908 CN11 CN8 TWEETER WOOFER TWEETER WOOFER 28CA1 889533 MKS5 MK L MK H PN1 PN2 PN4 PN3 LCD AM VR PW TW R TW L ...

Page 9: ...ower case assembly See procedure 1 5 2 Remove the seven 7 screws marked 260B The AM circuit board can then be removed Fig 5 270A Bind Head Tapping Screw P 3 0X12 MFZN2Y EP600300 280A Bind Head Tapping Screw P 3 0X25 MFZN2Y VK228100 Fig 1 2 Spring Terminal Time required About 10 min 2 1 Remove the lower case assembly See procedure 1 2 2 Remove the BAT connector assembly red black soldered to the sp...

Page 10: ...g Screw B 3 0X8 MFZN2Y EP600250 C30 Bind Head Tapping Screw P 4 0X8 MFZN2BL VB931600 Fig 4 260 Bind Head Tapping Screw P 3 0X8 MFZN2Y EP600280 300 Sems Pan Head Screw 3 0X10 MFZN2Y V5115200 Fig 5 260A C30 30 Speaker Woofer Speaker Woofer C30 280B 270B 290 270B 280B Keyboard Assembly Shield Box U C30 C30 290 290 290 290 290 290 Speaker Tweeter Speaker Tweeter 260B 300 260J 260J 260B 300 260B MK L M...

Page 11: ...it board can then be removed Fig 6 260 Bind Head Tapping Screw P 3 0X8 MFZN2Y EP600280 L50 Bind Head Tapping Screw P 3 0X8 MFZN2Y EP600280 Fig 6 Fig 7 10 PW Circuit Board Time required About 5 min 10 1 Remove the lower case assembly See procedure 1 10 2 Remove the two 2 screws marked 260G The PW circuit board can then be removed Fig 6 11 VR Circuit Board Time required About 10 min 11 1 Remove the ...

Page 12: ...in the area indicated by the arrow in Figure 11 When fitting the rubber contacts raise both ends of the frame so that keys do not push the rubber contact up 16 3 Install the MK L MK H circuit boards in the assembly so that the hooks B hold it as shown in Figure 12 Fig 9 140 Bind Head Tapping Screw P 3 0X16 MFZN2Y EP600310 Fig 10 Fig 11 Rubber Contact Rubber Contact Hooks B Fig 12 140 140 Black Key...

Page 13: ...trol Writ data to FDD Ground Step signal to control head of FDD Direction Head load Head select Ground Drive select Ground Motor on Ground FUNCTION PIN NO I O FUNCTION NAME PIN NO I O FUNCTION NAME 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 P12 P11 P10 P47 KR7 P46 KR6 P45 KR5 P44 KR4 P43 KR3 P42 KR2 P41 KR1 P40 KR0 NC IC X2 X1 VSS0 VDD0 RESET P53 P52 P51 TO2 P50 TI0 TO0 I O I O I O I...

Page 14: ...ta bus 40 SMD15 I O Wave memory data bus 124 CMA21 O Program address bus 41 SOE O read signal 125 PDT15 I O SWX access data bus 42 SWE O write signal 126 PDT14 I O SWX access data bus 43 SRAS O RAS signal 127 PDT13 I O SWX access data bus 44 SCAS O CAS signal 128 PDT12 I O SWX access data bus 45 REFRESH O REFRESH signal 129 PDT11 I O SWX access data bus 46 CS0 O CS signal 130 PDT10 I O SWX access ...

Page 15: ...ock Power supply 5 V Altamated signal for LCD driver outout Display data interface Read write Enable Data interface Data interface FUNCTION PIN NO 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 I O I O I O I O I O I O I O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O O DB2 DB3 DB4 DB5 DB6 DB7 C1 C2 C3 C4 C...

Page 16: ...rting Input A DC Voltage Supply DC Voltage Supply Output B Inverting Input B Non Inverting Input B Inverting Input A 1 2 3 4 LOUT 8 7 6 5 VDD Ground Lch analog output Power supply Shift clock Serial dat input L R clock Voltage reference GND REF ROUT CLK SI LRCK Rch analog output µPC4570C XC520A00 Dual Operational Amplifier DM IC502 µPD6379AGR XR998A00 D A Converter DM IC501 AM XZ754C0 19 DM XZ669C...

Page 17: ...M 32M MIDI I F AND WAVE ROM 32M FDC SWX00B DRAM 4M REGULATOR 3 3V REGULATOR 5V SYSTEM RESET DAC LPF POWER AMP DC DC CONVERTER REGULATOR 5V WARNING Components having special characteristics are marked Z and must be replaced with parts having specification equal to those originally installed REGULATOR 5V NJM78L05A XC520A00 2 1 3 3 OUTPUT 2 GND 1 INPUT REGULATOR 5V S81250SGY Z XT625A00 2 1 3 3 OUTPUT...

Page 18: ...2 PN3 PN4 28CC1 8819536 LCD 28CC1 8819537 MK H 28CC1 8812655 MK L 28CC1 8812655 LCD DRIVER CPU to DM CN102 PN 4 MK H MK L MKS5 PN 3 PN 2 PN 1 LCD to DM CN715 to DM CN701 to DM CN702 LCD BACK LIGHT to AM CN907 Ceramic Capacitor Semiconductive Ceramic Capacitor Note See parts list for details of circuit board component parts ...

Page 19: ... alternately on the LCD 2 002Rom Chk1 Checks the ROM The test results appear on the LCD 3 003Ram Chk1 Checks all the RAMs that are connected to the CPU The test results appear on the LCD 4 004WRomChk1 Checks the WAVE ROMs that are connected to the CPU The test results appear on the LCD 5 005WRamChk1 Checks the WAVE RAMs that are connected to the CPU The test results appear on the LCD 7 007FDD Chk ...

Page 20: ...hat the C4 note is output and that the test results appear on the LCD 40 040Battery Removing the AC adapter sets to the Battery Check mode In advance install the batteries The A D value of the battery is detected and displayed with hexadecimal number on the LCD 41 041Rom Chk2 Checks the ROMs that are connected to the CPU The test results appear on the LCD 42 042Ram Chk2 Checks the RAMs that are co...

Page 21: ...key 7 G 3 22 Tenkey 8 Tenkey 8 A3 23 Tenkey 9 Tenkey 9 A 3 24 Tenkey Tenkey B3 25 Tenkey 0 Tenkey 0 C4 26 Tenkey Tenkey C 4 27 SONG Song D4 28 STYLE Style D 4 29 VOICE Voice E4 30 ACMP ON OFF Accomp F4 31 SYNC STOP S Stop F 4 32 SYNC START S Start G4 33 START STOP Str Stp G 4 34 INTRO ENDING Intro A4 35 MAIN AUTOFILL Main Fil A 4 36 TEMPO TAP Temp TAP B4 37 RECORD Record C5 38 Track 1 Tr1 C 5 39 T...

Page 22: ...rade Talking On Off Data Initialization All data can be initialized and restored to the factory preset condition by turning on the power while holding the highest rightmost white key on the keyboard CLr Backup will appear briefly on the display Backup CLr DATA BACKUP INITIALIZATION All Registration Memory and User song data plus the other settings listed above will be erased and or changed when th...

Page 23: ...4 71 72 74 91 93 94 96 97 7 100 101 84 x o x x o x x 73 x x x x x x 2 o o o 2 o o 2 o 2 o 2 o 2 o o o 2 o 2 o x Bank Select Modulation wheel Data Entry Part Volume Pan Expression Sustain Harmonic Content Release Time Attack Time Brightness Effect Depth RPN Inc Dec RPN LSB MSB Portamento Cntrl Prog o 0 127 o 0 127 Change True System Exclusive o 3 o 3 x x Common Song Sel x x Tune x x System o o Real...

Page 24: ...zero The second letter of the shaded part number is I not one M South African model O Chinese model Q South east Asia model T Taiwan model U U S A model V General export model 110V W General export model 220 N X General export model Y Export model A Australian model B British model C Canadian model D German model E European model F French model H North European model I Indonesian model J Japanese ...

Page 25: ...L100 L70 F50 F30 300 F40 190 170 280 20 30 430 310 290 210 350 260 200 370 380 390 360 230 260 260 260 260 400 340 270 260 440 270 150 50 140 130 60 110 130 100 70 90 50 40 120 260 420 80 260 410 220 260 260 20 30 430 310 260 10b 10e 10d 10d 10c 10e 10a 240 240a 240b C140 C130 C130 C130 Music Rest Upper Case Assembly LCD Unit Lower Case with Speaker Battery Cover Assembly Floppy Disk Drive Assembl...

Page 26: ...Battery Cushion WHITE V710060 3 240b Nonworen Fabric Cloth 10X70X0 5 V781030 2 250 Label FE V704940 260 Bind Head Tapping Screw P 3 0X8 MFZN2Y 49 01 270 Bind Head Tapping Screw P 3 0X12 MFZN2Y 16 01 280 Bind Head Tapping Screw P 3 0X25 MFZN2Y 6 01 290 Bind Head Tapping Screw B 3 0X8 MFZN2Y 13 01 300 Sems Pan Head Screw SW3 0X10 4 01 310 Adhesive Tape 12X50 19 03 340 Holder 97X9 01 350 Circuit Boar...

Page 27: ...al C80 Spring Terminal C90 Adhesive Tape 12X50 11 03 C100 Vibration proof Tape 18X25 4 03 C130 Nonworen Fabric Cloth 40X13X0 5 V771130 6 C140 Nonworen Fabric Cloth 13X13X0 5 V771140 Floppy Disk Drive Assembly A V704320 F10 Floppy Disk Drive 3 5inch DF354H 13 F20 Holder FDD LEFT V362620 F30 Holder FDD RIGHT V362630 F40 Bind Head Screw 3 0X5 MFZN2Y 4 01 F50 Bushing 4 01 F60 Adhesive Tape ECT 590S W ...

Page 28: ... Screw P 3 0X16 MFZN2BL 21 01 140 Bind Head Tapping Screw P 3 0X16 MFZN2B 21 01 150 Grease G 31KA 50g 10 160 Circuit Board Assembly MKS5 TY KBD SW V712720 170 Nonworen Fabric Cloth 40X13X0 5 V771130 Circuit Board Assembly MKS5 TY KBD SW V712720 S1 Circuit Board MK L 09 S2 Circuit Board MK H 09 S3 Circuit Board MKS5 S4 Cable MK A 12P 03 S5 Cable MK B 12P 03 S6 Cable MK C 7P 03 S7 Cable MK D 5P 03 S...

Page 29: ...25 0V 05 CN602 Cable Holder 51048 6P TE 01 CN801 Wire Trap 52147 5P TE 01 CN802 Base Post Connector XH 4P TE 01 CN901 Cable Holder 51048 7P TE 01 CN902 Wire Trap 52147 4P TE 01 CN903 Base Post Connector XH 2P TE 01 CN907 Wire Trap 52147 2P TE 01 CN908 Base Post Connector XH 2P TE 01 CN909 Cable Holder 51048 2P TE 01 CN910 Cable Holder 51048 2P TE 01 D0901 Diode 20E1 FC4 01 D0902 Diode 20E1 FC4 01 ...

Page 30: ...0 25V Z 01 C0106 Electrolytic Cap 100 00 10 0V 01 C0107 Semiconductive Cera Cap 0 1000 25V Z 01 0109 Semiconductive Cera Cap 0 1000 25V Z 01 C0110 Electrolytic Cap 100 00 10 0V 01 C0111 Electrolytic Cap 100 00 10 0V 01 C0112 Semiconductive Cera Cap 0 1000 25V Z 01 C0113 Electrolytic Cap 100 00 10 0V 01 C0114 Semiconductive Cera Cap 0 1000 25V Z 01 C0115 Electrolytic Cap 100 00 10 0V 01 C0116 Semic...

Page 31: ...32M WAVE IC204 IC MSM514260C 60TS K DRAM 4M 16 IC204 IC SDM4260CLTM 6S 08 IC301 IC UPD431000AGW 70LL SRAM 1M 07 IC301 IC M5M51008CFP 70H 07 IC301 IC UPD431000AGW 07 IC302 IC UPD431000AGW 70LL SRAM 1M 07 IC302 IC M5M51008CFP 70H 07 IC302 IC UPD431000AGW 07 IC303 IC K3N6C429LE DC10 MASK ROM 32M PROGRAM IC304 IC HD63266F FDC 09 IC501 IC UPD6379AGR DAC 04 IC502 IC UPC4570C OP AMP 01 IC503 IC NJM78L05A...

Page 32: ...RA701 Resistor Array RGLE8X473J 01 RA702 Resistor Array RGLE6Y101J TR101 Transistor 2SC1740S R S 01 TR601 Transistor 2SC1740S R S 01 TR602 Transistor 2SC1740S R S 01 Circuit Board LCD XY486B0 C0707 Electrolytic Cap 100 00 10 0V 01 C0708 Semiconductive Cera Cap 0 1000 25V Z 01 C0709 Semiconductive Cera Cap 0 1000 25V Z 01 CN001 Cable Holder 51048 12P TE 01 IC701 IC S6A0069X10 Q0RJ LCD DRIVER 05 IC7...

Page 33: ... Board PN2 XZ776B0 Circuit Board PN3 XZ776B0 Circuit Board PW XZ776B0 Circuit Board VR XZ776B0 CN004 Cable Holder 51048 6P TE 01 CN005 Cable Holder 51048 7P TE 01 CN006 Cable Holder 51048 6P TE 01 CN007 Cable Holder 51016 15P TE 01 CN009 Cable Holder 51048 5P TE 01 CN010 Cable Holder 51048 5P TE 01 CN011 Cable Holder 51048 4P TE 01 LD001 LED Green SLZ 290B 01 T1 DISK IN USE 01 Z SW99 Push Switch S...

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