Piano, Organ, and Keyboard/Kawai DX900 parts

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Question
QUESTION: Hi there,
I'm seeking replacement parts for a Kawai DX900.
At the moment, I'm having trouble sourcing LM8671, which is used in the divider/gate cards.

I wonder if you have any information on sources of these chips, drop in replacements, or alternatives of any kind.

Thank you,
Paul.

CD4024
CD4024  
ANSWER: Dear Paul , an octave divider is a device binary counter and may be replaced making a new card to work with CD4024 like 7 stage binary counter, with care the polarity and usage  coupled single diodes you give the note from TOG to CD4024 clock input and get 7 octaves from the outputs pins, if your device works with 2 notes exemple (C & C#), you need install a CD4024 each note, please let me know your testing by this solution...

---------- FOLLOW-UP ----------

QUESTION: Thank you very much for the fantastic information.
While I do have the DX900 service manual, I feel an LB8671 pinout would help me an awful lot.

Do you know of anywhere I could get this? It doesn't seem to be available from the usual sources and the DX service manual is hand written and not great quality.

Thank you again,
Paul.

Answer
Dear friend, you must to use al oscilloscope or a signal tracer to know the in and out device pins, this is a frecuence divider, the most higer square pulse denote clock input pin and the half frecuence pulses denote the output pin, no pulse pin may be the  Vdd and Ground pines, Vdd is higer voltage measurement,  

Piano, Organ, and Keyboard

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Cesar David Rojas Diaz

Expertise

Expert in Electric and Electronic Pianos,Organs and Keyboards repair, Service schematics support for YAMAHA,CASIO, Hammond, Wurlitzer, Conn, Rodgers, Gulbransen, Farfisa, Gem, Lowrey, Roland, Korg, Kimball, Philips, Fender Rhodes, Kawai, Viscount, Alesis, Baldwin, and another brands

Experience

Service YAMAHA Technician since 1975 MUSIYAMA C.A.(Venezuela) Service HAMMOND Technician since 1977 MUSIKALIA C.A. (Venezuela) Service KIMBALL Technician since 1977 MUSICALIA C.A. (Venezuela Service RODGERS Technician since 1977 MUSIKALIA C.A. (Venezuela) Service WURLITZER Technician since 1982 TECLADOS DE VENEZUELA C.A. (Venezuela) Service GEM Technician since 1983 LA MEZQUITA MUSICAL C.A. (Venezuela) Service SONY Technician Supervisor SONY (Venezuela)

Organizations
IARU (International Amateur Radio Union) RCV Radio Club Venezolano

Publications
POPULAR MECHANICS 1972 (Venezuela Edition) QRZ.COM YV5SL Callsign Emagister (Experto) Country List E-QSL

Education/Credentials
The Bachelor of Technology (BTech) IPV Instituto Politécnico Caracas 1971 (Venezuela) Ham Radio Amateur Certificate 22132 (Venezuela Gob.) YV5SL Callsign 1977 (Venezuela)

Awards and Honors
WAC Work All Continents 1988 (IARU) IARU R2 AWARD 2010 (IARU) NASA LRO 2008 (NASA)

Past/Present Clients
YAMAHA, MUSIKALIA, TECLADOS DE VENEZUELA, SONY VENEZUELA, LA MEZQUITA MUSICAL

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