Yamaha dsp 1

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Page 1

DIGITAL SOUND FIELD PROCESSOR

DSP-1

SERVICE MANUAL

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M.- IMPORTANT NOTICE
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This manual has been provided for [he use of authorized Yamaha Reuilers and their service personnel.
I! has been assumed that basic service procedures inheranl to the industry, and more speciﬁcally Yamaha
v a 2 - Products, are already known and understood by the users, and hzve therefore not been restated.
I- T T 7
WARNING: Failure to follow appropriate sen/ice and safety procedures when servicing mis producl
ww- I'm may result in personal iniury, destruction of expensive components and failurz or the
[W P Uzi product to perform as speciﬁed. For these reasons, we advise all Yamaha product owners
I .. r-s that an service required should be performed by an aurhorized Yamaha Reullcr or the
CI! appointed service representarlve.
nW-ﬁ W- IMPORTANT: The presemarion or sale or this manual lo any individual or ﬁrm does no! commute
aulnorimipn, certiﬁcation or recognition of any applicable xecnnlcal capabilities, or
I3.."IL.1_£I.¢J esuhlish a principle-agent relationship of any form.
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raw Ferrari! lhe data provlded is believed to be accurate and applicable to [he unizls) indicaled on ihe cover The
Eme- E research, englneerlng, and service deparrmenrs or Yamaha are canlinually strlvlng m lmpruv: Yamaha
& a a a products. Modifications are, therefore, inevitable and speciﬁcanons are subject to change wixnoui notice or
ObIlyllon m retroﬁt. Should any dlscreuancv appear to exist, pleas: conuci me distributor's Serwce
Division.
WARNING: Suzie discharges can destroy expensive components. Discharge any smzic EIECUICIKY your
body may have aeeumulaled by groundlng yourself to the ground buss in me um (heavy
gauge black wires eonnecl m Lhis busslr
IMPORTANT: Turn lhe unit OFF during disassembly and parts revlaeement. Recheck A work before
yuu apply power to in: unli,
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TO SERVICE PERSONNEL. . . . , ............ 1 Us DATA ........... . ............ 15" 20
REAR PANELS ................... . ..... 1 IC BLOCK ........................ 21 27
SPECIFICATIONS ....................... 2 PRINTED CIRCUIT BOARD . ........... 28" 32
DISASSEMBLY PROCEDURES ........ . . . . . . 2 WIRING ...... . ............. 33
INTERNAL VIEW .................... 3 SCHEMATIC DIAGRAM ......... . r - 34/35
PRESET PROGRAM LIST ...... . . . . . . . 4/5 RS~DSP1 REMOTE CONTROL TRANSMITTER .. 3G
BLOCK DIAGRAM ......... . ........ 5/7 PARTS LIST ........... . . ........ . . 37" 44

ADJUSTMENT/TEST SPECIFICATIONS . . . . .8 ~ 14

YAMAIIA

NIPPON GAKKI C0,, LTD, HAMAMATSU, lBlPAN
2.8K-155 IDI® Printed in Lama '86]

SINCE 1887

Page 2

DSP-l

.TO SERVICE PERSONNEL

1 Critical Camponents |nformation,
Components having special characteristics are marked i.
and must be replaced with parts havong specifications equal
to those originally installed.

2. Leakage Current Measurement (For 120V Model Only).
When service has been completed it is imperative that you
verify that all exposed canductive surlaces are properly
insulated from supply circuits,

0 Meter impedance should be equivalent to 1500 ohm shunted
by 0,15MF.

o Leakage current must not exceed 0.5mA.

0 Be sure to test for leakage with the AC plug in both polarities.

I REAR PANELS

VU.S.A4 & Canadian models

EQUIPMENT
UNDER TEST

WALL L_:X
OUTLET INSULATING TABLE

@73- .__

AC LEAKAGE TESTER
OR EQUIVALENT

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