Ref.No.G_A0-068-E0_Ž_.pdf part of Aiwa Z-HT73, NSX-AV240, NSX-AV540, NSX-AV840 Ref.No.G_A0-068-E0_Ž_.pdf, Service Techincal Information - Subject: Noise from the surround and center speakers

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Service Technical Information
MODEL NO.

NSX -AV240 / AV540 / AV840 / Z- HT73
SUBJECT

Noise from the surround and center speakers

REF.No. :G - A0 - 068 - E0 DATE :22. SEP. 2000

Noise occasionally comes out from the surround and center speakers. Take the following procedure to solve the above problem: 1) Attach the double coated adhesive tape on PWB, MUTE(AV540) and attach them to the CD mechanism. 2) Fix PWB, MUTE(AV540) to the CD mechanism by gluing (1600B). 3) Remove C201 and C202 from MAIN C.B. 4) Solder seven wires from PWB, MUTE(AV540) to MAIN C.B. White: VREF, Black: GND, Red: VCC, Blue: C202(+), Purple: C202(-), Orange: C201(+), Yellow: C201(-) 5) Secure the wires with CLOTH.
Apply glue to the PWB ASSY PWB, MUTE(AV540) CD MECHANISM CLOTH Attach the double coated adhesive tape PWB, MUTE(AV540) MAIN C.B

VCC VREF GND

C202(+)

C202(-) Remove C201

MAIN C.B

Remove C202

C201(+)

C201(-)

Ref. - G - R -

Parts Code SV- T00- 097- 010 Code No. -

Description PWB, MUTE(AV540) Access Code - Modified Ser. No. -

Remarks - Parts Schedule -