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Roland PX-7B Service Notes
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Roland PX-7B Service Notes

Roland PX-7B Service Notes

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Oct. 2013
PX-7B
PX-7C
This service note contains information about repair parts and the repair method of the keyboard section.
For other sections of each model, please refer to each service note.

Table of Contents

Keyboard Parts List (PX-7B) ............................................2
Keyboard Parts List (PX-7C)............................................3
Keyboard Assembly Procedure ......................................4
Circuit Board (Low, Mid).................................................9
Circuit Board (High) .......................................................12
Circuit Diagram (Low) ...................................................14
Circuit Diagram (Mid)....................................................16
Circuit Diagram (High) ..................................................18
Copyright © 2013 Roland Corporation
All rights reserved. No part of this publication may be reproduced in any form without the written permission
of Roland Corporation.
Revise Information
Dec. 2, 2013
May. 24, 2016
Jul. 29. 2016
Aug. 10, 2016
17058887E0
PX-7B, PX-7C
SERVICE NOTES
Issued by RJA
p. 6
Changed grease.
p. 2
Added parts.
p. 3
Added the PX-7C keyboard parts list.
p. 3
Changed a part code.
CC-KWS

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Summary of Contents for Roland PX-7B

  • Page 1: Table Of Contents

    This service note contains information about repair parts and the repair method of the keyboard section. For other sections of each model, please refer to each service note. Table of Contents Keyboard Parts List (PX-7B) ..........2 Keyboard Parts List (PX-7C)..........3 Keyboard Assembly Procedure ........4 Circuit Board (Low, Mid)..........9...

  • Page 2: Keyboard Parts List (Px-7B)

    Oct. 2013 PX-7B, PX-7C Keyboard Parts List (PX-7B) fig.key-PX-7B.eps Part Code Part Name Description Q’ty 5100034009 KEYBOARD ASSY PX-7B 5100016416 N-KEY C PX-7 (C6200269R0) 5100016417 N-KEY D PX-7 (C6200270R0) 5100016418 N-KEY E PX-7 (C6200271R0) 5100016419 N-KEY F PX-7 (C6200272R0) 5100016420...

  • Page 3: Keyboard Parts List (Px-7C)

    Oct. 2013 PX-7B, PX-7C Keyboard Parts List (PX-7C) fig.key-PX-7C.eps Part Code Part Name Description Q'ty 5100053166 KEYBOARD ASSY PX-7C SV SERVICE ASSY 5100054674 5100046363 N-KEY C PX-7C 5100046364 N-KEY D PX-7C 5100046365 N-KEY E PX-7C 5100046366 N-KEY F PX-7C 5100046367...

  • Page 4: Keyboard Assembly Procedure

    Oct. 2013 PX-7B, PX-7C Keyboard Assembly Procedure Removing the Key Insert the tip of needle nose pliers into the U-groove on the pivot side and push in the direction of arrow A. *Before removing black keys, first be sure to remove the adjacent white keys.
  • Page 5 Oct. 2013 PX-7B, PX-7C Installing the Circuit Board 1.Peel off the backing paper of all the double-sided adhesive tape on the circuit board. 2.Align the notch of the circuit board with the tab on the sub-chassis and press the circuit board to the depth of the notch.
  • Page 6 Oct. 2013 PX-7B, PX-7C Application of Grease Greasing Points After the key or hammer has been replaced, the specified grease must be applied to the following points as shown in the figure. fig.key-grease.eps 1-(b) 2-(a) 1-(c), 2-(b) 1-(a) 1.MORICOAT G-1039...pink (#17041858)
  • Page 7 Oct. 2013 PX-7B, PX-7C Regarding Hammer Placement Hammers that have differently shaped metal and plastic portions are arranged as shown in the figure below. When replacing, be very careful not to position the hammers incorrectly. *Installation at an incorrect location may impede key touch.
  • Page 8 Oct. 2013 PX-7B, PX-7C Affixing the Cushion The cushions are of five types. Position each according to the instructions in the figure. fig.key-cushion-e.eps #5100019110 or #5100048726: #5100028252 or #5100048727: KEY CUSHION A (white) KEY CUSHION E (white) Position flush against the edge Align with the edge of the Guide Holder.

  • Page 9: Circuit Board (Low, Mid)

    Oct. 2013 PX-7B, PX-7C Circuit Board (Low, Mid) fig.b-L1.eps@L fig.b-L2.eps@L fig.b-M1.eps@L fig.b-M2.eps@L...
  • Page 10 Oct. 2013 PX-7B, PX-7C...
  • Page 11 Oct. 2013 PX-7B, PX-7C fig.b-L1.eps@R fig.b-L2.eps@R fig.b-M1.eps@R fig.b-M2.eps@R...

  • Page 12: Circuit Board (High)

    Oct. 2013 PX-7B, PX-7C Circuit Board (High) fig.b-H1.eps@L fig.b-H2.eps@L...
  • Page 13 Oct. 2013 PX-7B, PX-7C fig.b-H1.eps@R fig.b-H2.eps@R...

  • Page 14: Circuit Diagram (Low)

    Oct. 2013 PX-7B, PX-7C Circuit Diagram (Low) fig.d-low.eps@L D(0:11) T(0:5)
  • Page 15 Oct. 2013 PX-7B, PX-7C fig.d-low.eps@R DIP NORMAL-TOP_type CN101 20FMN-BTK-A (LF)(SN) FS102 FS101 D(11) (S3) D(10) (M3) D(9) (P3) D(8) (S2) D(7) (M2) D(6) (P2) D(5) (S1) D(4) (M1) D(3) (P1) D(2) (S0) D(1) (M0) D(0) (P0) T(5) T(4) T(3) T(2)

  • Page 16: Circuit Diagram (Mid)

    Oct. 2013 PX-7B, PX-7C Circuit Diagram (Mid) fig.d-mid.eps@L D+5V D+5V D+5V C216 4.7uF DGND C217 R204 0.1uF EXTIF2-CLK (PORT_O) UnPop TP203 R203 EXTIF0-CLK (RXD/SDI) L205 TP201 (IN ) PORT_I TP202 L204 TP204 (IN ) EXTIF0-CLK EXTIF1-CLK (TXD/SDO/SDA) L203 TP205 ( OUT)
  • Page 17 Oct. 2013 PX-7B, PX-7C fig.d-mid.eps@R DGND D+5V C206 4.7uF IC201 C215 0.1uF MB9AF111LAPMC1-G-106JNE2 DGND AVSS DGND R210 XRST-RST DGND DGND To PWB Hi C232 100pF C235 100pF C238 100pF C241 100pF C244 100pF SMT NORMAL-TOP_type C236 100pF C233 100pF C239...

  • Page 18: Circuit Diagram (High)

    Oct. 2013 PX-7B, PX-7C Circuit Diagram (High) fig.d-high.eps@L D(12 T(0:7)
  • Page 19 Oct. 2013 PX-7B, PX-7C fig.d-high.eps@R :23) DIP NORMAL-TOP_type CN301 20FMN-BTK-A (LF)(SN) D(23) (S7) D(22) (M7) D(21) (P7) D(20) (S6) D(19) (M6) D(18) (P6) D(17) (S5) D(16) (M5) D(15) (P5) D(14) (S4) D(13) (M4) D(12) (P4) T(7) T(6) T(5) T(4) T(3)

This manual is also suitable for:

Px-7c