Yamaha KB-180 Service Manual
  1. Manuals
  2. Brands
  3. Yamaha Manuals
  4. Musical Instrument
  5. KB-180
  6. Service manual
Yamaha KB-180 Service Manual

Yamaha KB-180 Service Manual

Digital keyboard
Hide thumbs Also See for KB-180:
Table of Contents

Advertisement

Quick Links

See also: Manual
PK
001800
DIGITAL KEYBOARD
SERVICE MANUAL
CONTENTS
SPECIFICATIONS ......................................................................3
PANEL LAYOUT .........................................................................4
CIRCUIT BOARD LAYOUT & WIRING ......................................6
DISASSEMBLY PROCEDURE ..................................................8
LSI PIN DESCRIPTION ............................................................14
IC BLOCK DIAGRAM ...............................................................16
CIRCUIT BOARDS ...................................................................17
TEST PROGRAM .....................................................................26
INITIALIZATION .......................................................................29
MIDI IMPLEMENTATION CHART ............................................30
MIDI DATA FORMAT ................................................................31
PARTS LIST
BLOCK DIAGRAM
OVERALL CIRCUIT DIAGRAM
Copyright (c) Yamaha Corporation. All rights reserved. PDF
KB-180
SKB-180
HAMAMATSU, JAPAN
'08.03
&

Advertisement

Table of Contents
loading

Related Manuals for Yamaha KB-180

Summary of Contents for Yamaha KB-180

  • Page 1 IC BLOCK DIAGRAM ...............16 CIRCUIT BOARDS ..............17 TEST PROGRAM ..............26 INITIALIZATION ...............29 MIDI IMPLEMENTATION CHART ..........30 MIDI DATA FORMAT ..............31 PARTS LIST BLOCK DIAGRAM OVERALL CIRCUIT DIAGRAM 001800 HAMAMATSU, JAPAN Copyright (c) Yamaha Corporation. All rights reserved. PDF ’08.03 &...

  • Page 2: Specifications

    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

    KB-180/SKB-180 SPECIFICATIONS...

  • Page 4: Panel Layout

    KB-180/SKB-180 PANEL LAYOUT • Front Panel A’...
  • Page 5 KB-180/SKB-180 A’ • Rear Panel...

  • Page 6: Circuit Board Layout & Wiring

    KB-180/SKB-180 CIRCUIT BOARD LAYOUT & WIRING • Lower case assembly Speaker R Speaker L (AMJK 5/6) • Upper case side DMLCD MIDI (AMJK 2/6) (AMJK 1/6) (AMJK 4/6) Upper case assembly Back light assembly • Upper case side (PN 1/6)
  • Page 7 KB-180/SKB-180 Connector Unit name Location Part No. Destination Remarks assembly WC601200 61L-CN5 *1 *4 DMLCD-CN402 *1 *4 7P L=550 WG343000 61H-CN2 *1 *4 DMLCD-CN403 *1 *4 5P L=500 WC601000 61H-CN1 *1 *4 DMLCD-CN401 *1 *4 12P L=600 Lower case Spring terminal (+) *2 *5...

  • Page 8: Disassembly Procedure

    KB-180/SKB-180 DISASSEMBLY PROCEDURE Lower Case Assembly Spring Terminal (Time required: About 2 minutes) (Time required: About 2 minutes) Remove the battery cover assembly. (Fig.1) Remove the lower case assembly. (See procedure 1.) Remove the nine (9) screws marked [320] and Remove the connector assemblies BAT (red/black) three (3) screws marked [330].
  • Page 9 KB-180/SKB-180 AM Circuit Board (Time required: About 4 minutes) Remove the “MASTER VOLUME” knob as shown in Fig. 4. (Fig. 4) Remove the screw marked [210A]. (Fig. 6) Remove the lower case assembly. (See procedure 1.) Master volume knob Remove the seven (7) screws marked [210B], three (3) screws marked [210C] and two (2) screws marked [210D].

  • Page 10: Amjk

    KB-180/SKB-180 DMLCD Circuit Board, Back Light Assembly MIDI Circuit Board (Time required: About 6 minutes) and LCD (Time required: About 4 minutes) Remove the lower case assembly. (See procedure 1.) Remove the lower case assembly. (See procedure 1.) Remove the LCD unit. (See procedure 4.) Remove the four (4) screws marked [210G].
  • Page 11 KB-180/SKB-180 PNR Circuit Board PB Circuit Board and Wheel Assembly (Time required: About 6 minutes) (Time required: About 2 minutes) Remove the lower case assembly. (See procedure 1.) 10-1 Remove the lower case assembly. (See procedure 1.) Remove the thirteen (13) screws marked [210J]...
  • Page 12 KB-180/SKB-180 12-3 Disassembling Keyboard Assembly Rubber Contacts (Time required: About 3 minutes) 12-3-1 Remove the white and black keys corresponding 12-1 Remove the lower case assembly. (See procedure 1.) to the rubber contacts to be removed. 12-2 (See Fig. 12 and Procedure 12-2.)
  • Page 13 KB-180/SKB-180 When installing the circuit board 61H, tighten the screws 1 through 8 in numerical order as shown in the figure for circuit board “61H” in Fig. 14. (Fig. 14) When the black keys from C#2 to A#2, from C#3 to A#3 or from C#5 to A#5 are replaced,...

  • Page 14: Lsi Pin Description

    KB-180/SKB-180 LSI PIN DESCRIPTION NT3881DFG-01 (X3148A00) LCD DRIVER ..............14 ML9040A-B01GAZ03A (XZ987A00) LCD DRIVER............14 ADC084S021CIMM (X6905A00) ADC (Analog to Digital Converter) ......14 YMW767-VTZ (X6055A00) CPU (SWL01T)..............15 AK4385ET (X6040A00) DAC (Digital to Analog Converter) ..........16 NT3881DFG-01 (X3148A00) LCD DRIVER ML9040A-B01GAZ03A (XZ987A00) LCD DRIVER...
  • Page 15 KB-180/SKB-180 YMW767-VTZ (X6055A00) CPU (SWL01T) DMLCD: IC301 NAME FUNCTION NAME FUNCTION Ground Ground Input for TEST Power supply +3.3 V TESTN PLLBPN PLL bypass select External memory lower-byte enable / Port F LBN/LWRN/PF6 PLLV PLL Power supply +2.5 V External memory upper-byte enable / Port F...

  • Page 16: Ic Block Diagram

    KB-180/SKB-180 AK4385ET (X6040A00) DAC (Digital to Analog Converter) DMLCD: IC501 NAME FUNCTION NAME FUNCTION MCLK Master Clock AOUTR- Rch Analog out(-) BICK Audio Serial Data Clock AOUTR+ Rch Analog out(+) SDTI Audio Serial Date Input AOUTL- Lch Analog out(-) LRCK...

  • Page 17: Table Of Contents

    KB-180/SKB-180 CIRCUIT BOARDS AM (AMJK 1/6) Circuit Board (X7176H0) ..........24 AM (AMJK 4/6) Circuit Board (X7176H0) ..........24 AM (AMJK 5/6) Circuit Board (X7176H0) ..........24 MIDI (AMJK 2/6) Circuit Board (X7176H0) ..........17 PB (AMJK 6/6) Circuit Board (X7176H0) ..........20 DMLCD Circuit Board (X7174D0) ............
  • Page 18 KB-180/SKB-180 DMLCD Circuit Board not installed to PNL (PN 2/6)-CN774 not installed to 61H-CN1 to 61L-CN5 to 61H-CN2 not installed Component side DMLCD: 2NA-WG23540-1...

  • Page 19: Dmlcd Circuit Board (X7174D0)

    KB-180/SKB-180 DMLCD Circuit Board Pattern side DMLCD: 2NA-WG23540-1...

  • Page 20: Pb (Amjk 6/6) Circuit Board (X7176H0)

    KB-180/SKB-180 PNL (PN 2/6) Circuit Board to DMLCD-CN703 Component side PNL (PN 4/6) Circuit Board PB (AMJK 6/6) Circuit Board PORTAMENTO PITCH BEND Component side Component side PB: 2NA-WG23590-1 PNL: 2NA-WG23610-1...
  • Page 21 KB-180/SKB-180 PNL (PN 2/6) Circuit Board Pattern side PNL (PN 4/6) Circuit Board Pattern side PB: 2NA-WG23590-1 PNL: 2NA-WG23610-1...

  • Page 22: Pnr (Pn 1/6) Circuit Board (X7177C0)

    KB-180/SKB-180 PNR (PN 1/6) Circuit Board Scale: 90/100 Component side PNR (PN 3/6) Circuit Board Component side PNR: 2NA-WG23610-1...
  • Page 23 KB-180/SKB-180 PNR (PN 1/6) Circuit Board Scale: 90/100 Pattern side PNR (PN 3/6) Circuit Board Pattern side PNR: 2NA-WG23610-1...

  • Page 24: Am (Amjk 1/6) Circuit Board (X7176H0)

    KB-180/SKB-180 AM (AMJK 1/6) Circuit Board to Battery Component side DC IN 12V PHONES/ OUTPUT EXPRESSION AM (AMJK 4/6) Circuit Board AM (AMJK 5/6) Circuit Board STANDBY/ON MASTER VOLUME Component side Component side AM: 2NA-WG23590-1...

  • Page 25: Circuit Board (X2335C0)

    KB-180/SKB-180 61H Circuit Board to DMLCD-CN401 to 61L-CN4 to DMLCD-CN403 A’ Component side A’ 61L Circuit Board B’ to DMLCD-CN402 to 61H-CN3 B’ Component side 61H: 2NAKB-V869540 61L: 2NAKB-V869520...

  • Page 26: Test Program

    KB-180/SKB-180 TEST PROGRAM * If the test number 47 “Factory Set” is executed, the data already set will be lost. Preparations 1) Use an AC adaptor PA-5D. 2) Measuring device: Frequency counter, which can detect thousandth value or more, Level meter (with JIS-C fi lter), Oscilloscope Note: Use a stereo plug and connect a load resistor of 33 Ω...
  • Page 27 KB-180/SKB-180 TEST No LCD display Test descriptions, judging conditions, etc. Checks the switches and LEDs on the panel. Press the switches as shown in the LCD. When a switch SW Chk is pressed, a sound is played at the prescribed pitch. (Refer to the Switch test item list on the next page.) When a switch with LED is turned on, the LED will light up.
  • Page 28 KB-180/SKB-180 Switch test item list Turn SW Name LCD Display Note Number Turn SW Name LCD Display Note Number Acmp Vol 5 A-VOL UP VIBES VIBES Acmp Vol A-VOL DW STRINGS1 STRINGS1 Tempo 5 TEMPO UP VIOLIN VIOLIN Tempo TEMPO DW...

  • Page 29: Initialization

    KB-180/SKB-180 INITIALIZATION...

  • Page 30: Midi Implementation Chart

    KB-180/SKB-180 MIDI IMPLEMENTATION CHART YAMAHA [ Digital Keyboard ] Date:21-SEP-2007 KB-180/SKB-180 MIDI Implementation Chart Model Version:1.0 Transmitted Recognized Remarks Function... Basic Default 1 - 16 1 - 16 Altered ************** Number : True voice ************** 0 - 127 Velocity Note ON...

  • Page 31: Midi Data Format

    KB-180/SKB-180 MIDI DATA FORMAT...

  • Page 32: Parts List

    DIGITAL KEYBOARD PARTS LIST CONTENTS OVERALL ASSEMBLY ............. 2 KEYBOARD ASSEMBLY ..........5 LOWER CASE ASSEMBLY ..........6 ELECTRICAL PARTS ..........8-13 WARNING Components having special characteristics are marked and must be replaced with parts having specifi cation equal to those originally installed. •...

  • Page 33: Overall Assembly

    KB-180/SKB-180 OVERALL ASSEMBLY Music rest Upper case assembly 280a 280b Wheel assembly L110 L100 LCD Unit 340e 340e 340c 340f 340b 340a 340e 340d 340c Lower case assembly: See page 6. Battery cover assembly...
  • Page 34 KB-180/SKB-180 PART NO. DESCRIPTION REMARKS REF NO. QTY RANK OVERALL ASSEMBLY KB-180/SKB-180 Overall Assembly KB-180 (WN08930) Overall Assembly SKB-180 (WN08940) WN090200 Upper Case Assembly KB-180 WN090300 Upper Case Assembly SKB-180 WF816000 Panel Switch 1 Black ACMP,SYNCRO STOP,SYNCRO START,INTRO/ENDING,START/ STOP,MAIN A,MAIN B WF816100 Panel Switch 2 White 8BEAT,...,DG WUSHI...
  • Page 35 KB-180/SKB-180 PART NO. DESCRIPTION REMARKS REF NO. QTY RANK ACCESSORIES WG073800 Music Rest WF324900 AC Adaptor PA-5D CHN : New Parts RANK: Japan only...

  • Page 36: Keyboard Assembly

    KB-180/SKB-180 KEYBOARD ASSEMBLY PART NO. DESCRIPTION REMARKS REF NO. QTY RANK KEYBOARD ASSEMBLY KB-180/SKB-180 V 8 6 9 5 7 0 0 Keyboard Assembly 16N C61 V 3 4 1 2 6 0 0 White Key 16N CEGB WB125200 White Key...

  • Page 37: Lower Case Assembly

    KB-180/SKB-180 LOWER CASE ASSEMBLY Speaker box L assembly Speaker box R assembly Keyboard assembly: See page 5. Lower case sub assembly...
  • Page 38 KB-180/SKB-180 PART NO. DESCRIPTION REMARKS REF NO. QTY RANK LOWER CASE ASSEMBLY KB-180/SKB180 Lower Case Assembly (WG07410) WG074000 Lower Case Sub Assembly V 8 6 9 5 7 0 0 Keyboard Assembly 16N C61 WC601200 Connector Assembly MK3 7P L=550...

  • Page 39: Electrical Parts

    KB-180/SKB-180 ELECTRICAL PARTS AM/MIDI/PB PART NO. DESCRIPTION REMARKS REF NO. QTY RANK ELECTRICAL PARTS KB-180/SKB-180 WM930000 Circuit Board AM (AMJK 1,4,5/6) (WM92990)(X7176H0) WM930100 Circuit Board MIDI (AMJK 2/6) (WM92990)(X7176H0) WM930200 Circuit Board PB (AMJK 6/6) (WM92990)(X7176H0) WN046200 Circuit Board DMLCD...
  • Page 40 KB-180/SKB-180 AM/MIDI/PB PART NO. DESCRIPTION REMARKS REF NO. QTY RANK CN155 VY669000 Cable Holder 51048 13P TE CN551 V I 8 7 8 3 0 0 Cable Holder 51048 5P TE CN551 VZ341700 Cable Holder 51048 5P TE CN552 V I 8 7 8 3 0 0 Cable Holder...
  • Page 41 KB-180/SKB-180 AM/MIDI/PB and DMLCD PART NO. DESCRIPTION REMARKS REF NO. QTY RANK R563 V 2 5 4 8 6 0 0 Carbon Resistor 330.0 1/6J 26TP R564 HF456100 Carbon Resistor 1.0K 1/4 J AX TP R564 V 2 5 4 9 2 0 0 Carbon Resistor 1.0K 1/6 J 26TP...
  • Page 42 KB-180/SKB-180 DMLCD PART NO. DESCRIPTION REMARKS REF NO. QTY RANK C401 US145100 Ceramic Capacitor-F (chip) 0.1000 25V Z RECT. C402 US145100 Ceramic Capacitor-F (chip) 0.1000 25V Z RECT. C403 US061470 Ceramic Capacitor-CH(chip) 47P 50V J RECT. -416 US061470 Ceramic Capacitor-CH(chip) 47P 50V J RECT.
  • Page 43 KB-180/SKB-180 DMLCD and PNL/PNR PART NO. DESCRIPTION REMARKS REF NO. QTY RANK R305 RD355470 Carbon Resistor (chip) 470.0 63M J RECT. R306 RD357100 Carbon Resistor (chip) 10.0K 63M J RECT. R307 RD357470 Carbon Resistor (chip) 47.0K 63M J RECT. R308 RD358100 Carbon Resistor (chip) 100.0K 63M J RECT.
  • Page 44 KB-180/SKB-180 PNL/PNR and 61H and 61L PART NO. DESCRIPTION REMARKS REF NO. QTY RANK CN774 V I 8 7 9 4 0 0 Cable Holder 51048 16P TE CN774 VY669100 Cable Holder 51048 16P TE CN775 V I 8 7 8 4 0 0 Cable Holder...
  • Page 45 KB-180/SKB-180 BLOCK DIAGRAM KB-180/SKB-180 TOUCH RESPONSE Keybord 61KEY (16N) SW MATRIX (AMJK 6/6) (PN 4/6) (PN 2/6) (PN 1/6) VR751 SW771 ( SW 39PCS ) PA4,PA6,PA7,PC6 SW MATRIX SW701-739 (PN 3/6) ( SW 25PCS ) PB0-PB7 (C1~B3) (C4~C6) LD752 SW746~770...
  • Page 46 KB-180/SKB-180 KB-180/SKB-180 OVERALL CIRCUIT DIAGRAM (AM, MIDI, PB, DMLCD, PNL, PNR, 61H, 61L) (PN 2/6) (PN 1/6) DMLCD P2 ROM 128M PROG./WAVE MR27V12852L-103TA0 to E-8 TRAD.ACD FR.HORN LUOGU METRO4/4 DRIVER YANGQIN VIVES BRASSECT DIZI1 STRINGS HARP SUONA1 VIOLIN SQUARELD ERHUENS...

This manual is also suitable for:

Skb-180

Table of Contents