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PK
001697
SERVICE MANUAL
The PSR-172 service manual provides only the differences as
compared with the PSR-170. You must have a PSR-170 service
manual (PK 001652 ) before servicing this unit.
CONTENTS
SPECIFICATIONS .............................................................................. 3
PANEL LAYOUT ................................................................................. 4
CIRCUIT BOARDS ............................................................................ 5
OVERALL CIRCUIT DIAGRAM ......................................................... 8
Copyright (c) Yamaha Corporation. All rights reserved. PDF-K702
'03.03

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   Summary of Contents for Yamaha PORTATONE PSR-172

  • Page 1

    PSR-170. You must have a PSR-170 service manual (PK 001652 ) before servicing this unit. CONTENTS SPECIFICATIONS ................3 PANEL LAYOUT ................. 4 CIRCUIT BOARDS ................5 OVERALL CIRCUIT DIAGRAM ............8 PARTS LIST 001697 Copyright (c) Yamaha Corporation. All rights reserved. PDF-K702 ’03.03...

  • Page 2

    IMPOR 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 understood by the users, and have therefore not been restated.

  • Page 3: Specifications

    Large multi-function LCD display VL/CSA 6.8W, CE7.5W (when using PA-3B power adaptor) Setup Power supply STANDBY/ON Adaptor : Yamaha PA-3C or PA-3B AC power adaptor MASTER VOLUME : MINI-MAX Batteries : Six “D” size, R20P(LR20) or equivalent batteries Panel controls Dimensions Overall, SONG, VOICE, STYLE, DEMO, POTABLE 931 x 348.8 x 127.9 mm (36-2/3"...

  • Page 4: Panel Layout

    PSR-172 PANEL LAYOUT Top Panel GrandPno !2 Numeric keypad, [+/ON] and [-/OFF] buttons q [MASTER VOLUME] dial !3 [ACCOMPANIMENT ON/OFF] w Power switch ([STANDBY/ON]) e LESSON [L] (Left) and [R] (Right) buttons ([A-B REPEAT]) button r [Dict.] (DICTIONARY) button !4 [SYNC START] ([ PAUSE]) button t [OVERALL] button !5 [START/STOP] button...

  • Page 5: Circuit Boards

    PSR-172 CIRCUIT BOARDS DM-LCD (XZ643D0) ................5 PN-AM 1/2 (XZ644C0) ................6 PN-AM 2/2 (XZ644C0) ................7 VR (XZ644C0) ..................7 DM-LCD Circuit Board to MK-L to PN-AM 1/2-CN102 to PN-AM 2/2-CN201 Component side Pattern side 2NA-V692510 2 Note : See parts list for details of circuit board conponent parts.

  • Page 6

    PSR-172 PN-AM 1/2 Circuit Board PAUSE START/ REPEAT STOP ACMP SYNC START/ INTRO/ MAIN/ TEMPO/ ON/OFF START STOP ENDING/rit. AUTO FULL LESSON LESSON STANDBY/ON OVERALL Dict. Component side PHONES/ DC IN 12V OUTPUT 2NA-V708340 7...

  • Page 7: Master Volume

    PSR-172 PN-AM 2/2 Circuit Board MULTI PAD/DJ GAME DEMO STYLE VOICE –/OFF 0/RESET +/ON PORTABLE GRAND SONG METRONOME to SPEAKER R Component side SUSTAIN MIDI VR Circuit Board to PN-AM 1/2-CN105 CN106 MASTER VOLUME Component side PN-AM 2/2, VR : 2NA-V708340 7...

  • Page 8: Overall Circuit Diagram

    PSR-172 OVERALL CIRCUIT DIAGRAM (Modifying part) TR101, R119, R120 and IC002 (DM-LCD) have been modified. PN-AM POWER AMP MASTER VOLUME PHONES/ OUTPUT SPEAKER STANDBY/ON 2SB1135 or 1269 REGULATOR DC IN 12V *1: The fuse is soldered. DM-LCD, PN-AM, VR : 28CC1-8819402 MK-L, MK-H : 28CC1-8819596 Mylar Capacitor WARNING...

  • Page 9: Parts List

    PARTS LIST CONTENTS OVERALL ASSEMBLY ..........................2 KEYBOARD ASSEMBLY ......................... 4 ELECTRICAL PARTS ........................5 – 8 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 10

    PSR-172 OVERALL ASSEMBLY Music Rest Lower Case Assembly LCD Unit L130 C120 L110 C180 L120 Keyboard Assembly L120 (See page 4.) C100 C110 C150 C170 C160 C130 C100 C150 120c 120e C150 120a 120f C150 C160 120e 120b 120e 120d Battery Cover Assembly...

  • Page 11

    PSR-172 PART NO. DESCRIPTION REMARKS REF NO. RANK OVERALL ASSEMBLY PSR-172 (WA06600) WA077300 Upper Case Speaker 12.0cm 4ohm 3W X3804A00 V 7 0 3 1 7 0 0 Panel Switch Black 3 DOME SONG,VOICE,STYLE V 7 2 0 2 3 0 0 Panel Switch White 12 DOME 0-9,OFF/-,ON/+...

  • Page 12

    PSR-172 KEYBOARD ASSEMBLY MK Circuit Board Assembly Lower Case PART NO. DESCRIPTION REMARKS REF NO. RANK KEYBOARD ASSEMBLY 16N C61 P1M PSR-172 (V709960) V34107A0 White Keys 16N CEGBDFA  White Key 16N CEGB (V341260)   White Key 16N CEGB (WB12520) ...

  • Page 13

    PSR-172 ELECTRICAL PARTS PART NO. DESCRIPTION REMARKS REF NO. RANK ELECTRICAL PARTS PSR-172 V 6 9 2 5 2 0 0 Circuit Board DM-LCD (V692510)(XZ643D0) Circuit Board MK-H 16N-1M (VZ27220)(XT701A0) VZ272400 V 7 1 8 9 9 0 0 Circuit Board MK-L 16N-1M C61 P1 (V719100)(XZ850A0) V 7 0 8 3 6 0 0...

  • Page 14

    PSR-172 PART NO. DESCRIPTION REMARKS REF NO. RANK  -0015 VY657200 Chip Inductance 600 BK1608HM601   R0007 V 3 0 6 3 4 0 0 Chip Inductance BLM18BD601SN1D   -0015 Chip Inductance BLM18BD601SN1D V 3 0 6 3 4 0 0 R0016 RD356220 Carbon Resistor (chip)

  • Page 15

    PSR-172 PART NO. DESCRIPTION REMARKS REF NO. RANK C0112 UR838100 Electrolytic Cap. 100.00 16.0V  C0113 VE326200 Monolithic Mylar Capacitor 0.15 50V J   C0113 VR168500 Monolithic Mylar Capacitor ECQ-V1H154JL3  C0114 VE326200 Monolithic Mylar Capacitor 0.15 50V J ...

  • Page 16

    PSR-172 PART NO. DESCRIPTION REMARKS REF NO. RANK WH102 Connector Assembly AM 8P (V719700) WH103 Connector Assembly PN2 9P (V719710) WH104 Connector Assembly SP 2P (V719660) WH105 Connector Assembly VR 5P (V719680) WH201 Connector Assembly MIDI 6P (V719690) WH203 Connector Assembly PN1 12P (V719720) WH204...

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