Accuphase e204

Page 1

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P.I.A. , Rosenweg 6, D-64231 Weiterstadt

CIRCUIT ADJUSTMENT (@fiéfilg)

PROCEDURE
STEP ADJUST ITEM 2mm ADJUST REMARKS
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EQUALIZER AMP ASSEMBLY (711-00l0-00)
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DC Balance of L" REC OUT L" on
l Egualizer Amp. v.0. M t s t . rear panel VRl _
4 a 74 *77'7L"DC»<% , x to less 31:; Scolgye a, 7qu/LVREC OUT L" Adjust for O
_ , 57W ' a reading of V.Ol Meter
DC Balance of R" 76 _ _, REC OUT R on 1 y rimmeow: am
2 Equalizer Amp. DCO'3VIJTmV/7 rear panel VR 2
t :v ? { *ff '1 7'R"DC'<'7 y 1 ,4 7 7/ qwxgc OUT R"
POWER AMP ASSEMBLY (7.7-0012-00)
A"7-7"/7'Assy
Bias Current Adjr for L ch. (l)and(2)tenninals of >
1 , , :;; V,OV Meter Set range Cement Resistor VR] ,
Lch. n 4 7 want m m than Dmgv' t x y mmmnmmz) g4!
11 5" / -
Bias Current Ad for R ch . _ ;< (l)and(l)tenninals of
2 R h- . , 1 DCOWUYWV Cement ReSIstor VR 2
5 ~ "4 135m tl> Hmmmfiumm

Notes; *1 Internal input resistance of voltrohm meter should be higher than 10k ohms.

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5&2 Following readjustment is not required when a whole Print Circuit Board has been changed. However,

3&3 In the DC Balance adjustment, though a normal volt-ohm meter can only indicate tl

Test Pom
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Cement Resistor
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in case of any component parts on the Printed Circuit Board having been changed, apply readjustment
according to the following table. /

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offset balance!

with a very small amount of meter scale, adjust it carefully so as the meter to i e exact ZERO
potential
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Power Amp Assembly Equallzer Amp Assembly
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(7|7~00|2-OU) (7||~00|0-00)

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