Yamaha PORTATONE PSR-350 Service Manual
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Yamaha PORTATONE PSR-350 Service Manual

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Table of Contents

SERVICE MANUAL
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.
PK
001653
1.412K-976
Printed in Japan '01.05

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Summary of Contents for Yamaha PORTATONE PSR-350

  • Page 1 SERVICE MANUAL 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 &...

  • Page 2: Important Notice

    PSR-350 IMPORTANT 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 understood by the users, and have therefore not been restated.

  • Page 3: Specifications

    • 106 styles + Disk Power Supply • Accompaniment Control : ACMP ON/OFF, SYNC STOP, SYNC START, START/STOP, • Adaptor : Yamaha PA-5C AC power adaptor INTRO/ENDING, • Batteries : Six “D” size, R20P (LR20) or equivalent batteries MAINA/B(AUTO FILL) Dimensions (W x D x H) •...

  • Page 4: Panel Layout

    PSR-350 PANEL LAYOUT Top Panel !9 @0 @1 @2 @3 A’ GrandPno A’...
  • Page 5 PSR-350 q Power switch ([STANDBY/ON]) !4 [METRONOME] button w [MASTER VOLUME] dial !5 [DJ] button e [DEMO] button !6 Numeric keypad, [+/YES] and [-/NO] but-tons r [TOUCH] button !7 [ACMP ON/OFF] / [A-B REPEAT] button t [HARMONY] button !8 [SYNC STOP] button y Overall (left, right) buttons !9 [SYNC START] / [ PAUSE] button...

  • Page 6: Circuit Board Layout & Wiring

    PSR-350 CIRCUIT BOARD LAYOUT & WIRING Lower case side Speaker (Woofer-R) Speaker (Woofer-L) Upper case side [PN-WH1] [C40] [C50] [AM-WH3] [PN-WH2] [450] [PN-WH10] [AM-WH2] [460] [WH200] Speaker (Tweeter-R) Speaker (Tweeter-L) [PN-WH9] [PN-WH11] [440] [L70] MK-L MKS5 MK-H [450] [460] [AM-WH2] [AM-WH3] [AM-WH7] [PN-WH10] Speaker (Tweeter-R)
  • Page 7 PSR-350 Upper case side Back Light Assembly [WH200] [PN-WH2] [PN-WH1] [L70] [PN-WH11] [PN-WH10] [PN-WH6] [PN-WH4] [PN-WH5] [PN-WH9] Location Part No. Connector Assembly Destination Remarks DM-CN102 *6 MKS5-CN1 *6 (V718860) V3819800 DM-CN301 FDD-CN1 FDPS AM-CN908 FDD-CN2 2/4P (V718900) Speaker (Wo) AM-CN802 (V718870) Battery AM-CN903...

  • Page 9: Disassembly Procedure

    PSR-350 DISASSEMBLY PROCEDURE Lower Case Assembly (Time required : About 5 min.) 1-1. Remove the fourteen (14) screws marked [270A] and the four (4) screws marked [280A]. The lower case assembly can then be removed. (Fig. 1) [270A] [280A] [270A] [280A] [270A] Battery Cover Assembly...
  • Page 10 PSR-350 [C30] [C30] Speaker (Woofer) Speaker (Woofer) Shield Box L Shield Box U [C30] [290] [260A] [290] [290] [30] [280B] [C30] [290] [270B] MK-H [270B] MKS5 MK-L [290] [290] [290] Keyboard [280B] Assembly [30] : Bind Head Tapping Screw-P 3.0X8 MFZN2Y (EP600280) [260A] : Bind Head Tapping Screw-P...
  • Page 11 PSR-350 PN 1 Circuit Board PW Circuit Board (Time required : About 15 min.) (Time required : About 5 min.) 10-1. Remove the lower case assembly. (See procedure 1) 6-1. Remove the lower case assembly. (See procedure 1) 10-2. Remove the two (2) screws marked [260G]. The 6-2.
  • Page 12 PSR-350 Keyboard Assembly [140] Black Key (Time required : About 10 min.) 13-1. Remove the lower case assembly. (See procedure 1) [140] Black Key 13-2. Remove the two (2) screws marked [280B]. The White Key keyboard assembly can then be removed. (Fig. 4) White Key Speakers and TW Circuit Board CEGB...

  • Page 13: Lsi Pin Description

    PSR-350 LSI PIN DESCRIPTION µPD789022GB-A15-8E (XZ560100) CPU ................... 13 HG73C205AFD (XU947C00) SWX00B (Tone Generator) ..............14 HD63266F (XI939A00) FDC (Floppy Disk Controller) ................. 13 S6A0069X10-Q0RJ (XV226A00) LCD DRIVER .................. 15 µPD789022GB-A15-8E (XZ560100) CPU MKS5 : IC1 NAME FUNCTION NAME FUNCTION P32/INTP2/CPT2 Port 3/External interrupt input/Capture edge input Port 1...
  • Page 14 PSR-350 HG73C205AFD (XU947C00) SWX00B (Tone Generator) DM : IC101 NAME FUNCTION NAME FUNCTION Initial clear CMA3 Program address bus RFCLKI PLL Clock CMA8 Program address bus PLL Control CMA2 Program address bus AVDD_PLL Power supply read signal AVSS_PLL Ground CMA1 Program address bus MODE0 SWX dual mode...
  • Page 15 PSR-350 S6A0069X10-Q0RJ (XV226A00) LCD DRIVER LCD : IC701 NAME FUNCTION NAME FUNCTION Data interface Segment signal output for LCD driving Common signal output for LCD driving Ground OSC1 Oscillator OSC2 Oscillator Power supply CLK1 Data latch clock Segment signal output for LCD CLK2 Data shift clock driving...

  • Page 16: Block Diagram

    PSR-350 IC BLOCK DIAGRAM µPC4570C (XC520A00) µPD6379AGR (XR998A00) TC74HCT08AF(EL) (XZ012A00) MM74HCT08SJX (XZ013A00) Dual Operational Amplifier D/A Converter Quad 2 Input AND DM : IC502 DM : IC501 DM : IC602 +DC Voltage Rch analog Output A Power supply Supply output Inverting Voltage Output B...
  • Page 17 PSR-350 PSR-350 OVERALL CIRCUIT DIAGRAM 1/2 (DM, AM, VR, PW, TW-L/R) NJM78L05A (XC520A00) REGULATOR +5V WAVE ROM 32M DRAM 4M 1: INPUT 2: GND 3: OUTPUT S81250SGY-Z (XT625A00) REGULATOR +5V 1: GND 2: INPUT 3: OUTPUT PROGRAM ROM µPC29M33HF (XT333A00) REGULATOR +3.3V REGULATOR SWX00B...
  • Page 18 PSR-350 OVERALL CIRCUIT DIAGRAM 2/2 (PN 1, PN 2, PN 3, PN 4, LCD, MKS5, MK-L, MK-H) to DM-CN701 to DM-CN702 to DM-CN715 PN 4 PN 1 LCD DRIVER PN 3 PN 2 LCD BACK LIGHT to AM-CN907 to DM-CN102 MKS5 MK-H MK-L...

  • Page 19: Test Program

    PSR-350 TEST PROGRAM 3. PROCEEDING THROUGH THE TEST 1. PREPARATION PROGRAM 1) PA-5C (AC adaptor) is used. 2) The volume is usually moved to the use position when MANUAL MODE : no volume change is required. 1) When the test program is started, “TEST” appears on 3) Measuring instruments : frequency counter, level meter the LCD.
  • Page 20 PSR-350 TEST No. LCD (initial) Test Functions and Judgment Criteria 020SW Chk Check the switches on the panel. Press the switches on the LCD as instructed. A pre-assigned note is output when the switch is pressed. (See table 1.) As the check result appears on the LCD when all the switches are pressed as instructed,.
  • Page 21 PSR-350 TABLE 1 ORDER SWITCH NOTE DEMO Demo TOUCH Touch HARMONY Harmony Dict. Dict LESSON L Lesson L LESSON R Lesson R MENU-L Menu-L MENU-R Menu-R DUAL Dual SETTING G Setti DW SETTING H Setti UP PORTABLE GRAND Portable METORONOME Metro (Tenkey) 1 Tenkey 1...

  • Page 22: Data Backup & Initialization

    PSR-350 DATA BACKUP & INITIALIZATION Data Backup Except for the data listed below, all PSR-350 panel settings are reset to their initial settings whenever the power is turned on. The data listed below are backed up —i.e. retained in memory — as long as an AC adaptor is connected or a set of batter-ies is installed.

  • Page 23: Midi Implementation Chart

    PSR-350 MIDI IMPLEMENTATION CHART YAMAHA [ Portable Keyboard ] Date:26-JAN-2001 Model PSR-350 MIDI Implementation Chart Version : 1.0 Transmitted Recognized Remarks Function... Basic Default 1 - 16 1 - 16 Channel Changed 1 - 16 1 - 16 Default Mode...

  • Page 24: Parts List

    PARTS LIST CONTENTS OVERALL ASSEMBLY ..........................2 KEYBOARD ASSEMBLY ......................... 5 ELECTRICAL PARTS ........................6 – 10 Notes : DESTINATION ABBREVIATIONS Australian model South African model British model Chinese model Canadian model South-east Asia model German model Taiwan model European model U.S.A.
  • Page 25 PSR-350 OVERALL ASSEMBLY Upper Case Music Rest Assembly LCD Unit L100 Keyboard Assembly (See page 5.) C10d C10f C100 C10c C10e C10f C10c C10g C10a C10b C140 Floppy Disk Drive Assembly C130 240b C130 240a C130 Lower Case with Speaker Battery Cover Assembly...
  • Page 26 PSR-350 PART NO. DESCRIPTION REMARKS REF NO. RANK OVERALL ASSEMBLY PSR-350 (V704580) V 7 0 4 9 9 0 0 Upper Case Assembly Upper Case (V705030) V 7 0 0 5 1 0 0 Speaker Grille LEFT V 7 0 0 5 0 0 0 Speaker Grille RIGHT V J 8 6 1 5 0 0...
  • Page 27 PSR-350 PART NO. DESCRIPTION REMARKS REF NO. RANK C10a Lower Case (V705080) C10b CB043750 Foot T1.6 BLACK C10c Cushion 1X15X875 (V704140) C10d Speaker Box L (V704110) C10e Speaker Box R (V704120) C10f EP640500 Bind Head Tapping Screw-P 4.0X10 MFZN2Y C10g Dust Proof Cloth (V720600) XT278A00...
  • Page 28 PSR-350 KEYBOARD ASSEMBLY PART NO. DESCRIPTION REMARKS REF NO. RANK V 7 1 2 7 1 0 0 KEYBOARD ASSEMBLY 16M C61 P2M MKS5 PSR-350  EP600280 Bind Head Tapping Screw-P 3.0X8 MFZN2Y  Bind Head Tapping Screw-P 3.0X8 MFZN2BL ...

  • Page 29: Electrical Parts

    PSR-350 ELECTRICAL PARTS PART NO. DESCRIPTION REMARKS REF NO. RANK ELECTRICAL PARTS PSR-350 V 7 2 2 4 6 0 0 Circuit Board (XZ754C0) V 7 2 2 4 7 0 0 Circuit Board (XZ754C0) V 7 0 1 6 6 0 0 Circuit Board (XZ669C0) V 7 1 9 5 3 0 0...
  • Page 30 PSR-350 PART NO. DESCRIPTION REMARKS REF NO. RANK L0608 VB835000 Coil FL5R200QNT 20uH L0610 VB835000 Coil FL5R200QNT 20uH L0801 VB835000 Coil FL5R200QNT 20uH -0803 VB835000 Coil FL5R200QNT 20uH L0901 V I 4 8 6 8 0 0 Line Filter SU10VD-20020 L0902 VZ017900 Coil...
  • Page 31 PSR-350 PART NO. DESCRIPTION REMARKS REF NO. RANK C0506 FG612220 Ceramic Capacitor-B 220P 50V K -0509 FG612330 Ceramic Capacitor-B 330P 50V K C0510 UR866470 Electrolytic Cap. 4.70 50.0V C0511 UR866470 Electrolytic Cap. 4.70 50.0V C0512 VC694800 Semiconductive Cera. Cap. 0.1000 25V Z C0514 UR837470 Electrolytic Cap.
  • Page 32 PSR-350 PART NO. DESCRIPTION REMARKS REF NO. RANK R0117 HF758100 Carbon Resistor 100.0K 1/4 J R0118 HF758100 Carbon Resistor 100.0K 1/4 J R0119 HF754470 Carbon Resistor 47.0 1/4 J -0121 HF754470 Carbon Resistor 47.0 1/4 J R0122 HF757820 Carbon Resistor 82.0K 1/4 J R0123 HF757220...
  • Page 33 PSR-350 PART NO. DESCRIPTION REMARKS REF NO. RANK  FG651220 Ceramic Capacitor-SL 22P 50V J   VR027400 Ceramic Capacitor-SL 22P 63V J   VR027400 Ceramic Capacitor-SL 22P 63V J UR828100 Electrolytic Cap. 100.00 10.0V  VC694800 Semiconductive Cera. Cap. 0.1000 25V Z ...

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