Aiwa TV 1402, TV 2002, TV 2102 manual Symptom, Audio PWB

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Service Technical Information

MODEL NO.

TVSE141 / SE211

SUBJECT

Audio malfunction

REF.No. :G A1024E0

DATE :14. JUN. 2001

<CONTENTS>

Noise enters into the data line(SDA/SCK) of IC404(volume controller) and causes the following symptoms.

<SYMPTOM>

Sound cuts out intermittently.

One channel becomes louder than the other.

<COUNTERMEASURE>

Add a capacitor to the data line(SDA/SCK) of IC404(volume controller) and compose a noise filter(Lands are available).

IC404

Circuit diagram

SDA SCK

IC1 5pin IC1 4pin

9 10

C474

C475

100pF

100pF

 

Add C474 and C475

Pattern diagram

Enlarged diagram

IC404

C475/100pF

10 9

AUDIO PWB

IC404

Apprecable section

C474/100pF

CN404

 

Ref.

 

Parts Code

 

Description

 

Remarks

 

 

 

 

 

 

 

 

 

 

 

C475,C474

 

87010322

080

C CAP,S 100P50 J CH GR

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

G

R

 

Code No.

 

Access Code

 

Modified Ser. No.

Parts Schedule

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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Contents Page Http//getMANUAL.com Page Page Service Technical Information ContentsTV − F2000 / F2400 C901 Countermeasure IC1PROTECTOR,4A 491SERIES Schematic DiagramWiring KE2 SH3SH2 C D E FDistinction switch set up data for each model TV−C463100pF C46239pF TV− SE1430 / SE2130 / C1400 Symptom Audio PWBBlack marking 16V SMGNH / NH KIT,ZJA−Be care to Direction of diode Mcfm KY,EZY,KHYFront Rear 4PIN FrontIC1 36PIN KE,KERSH,SHR TV C148 SHRJ4C,SHRJLRC,SHJRCEZY 1DW195DE5Q, IC MainKY,EZY KHY KER / SH SHRWiring diagram KER / KE −F BEAD,FBR07HA121NBRemove the JW606 and JW608 which connect the GND traces EZ / K,EZ,KH 21CRT PHILIPST/POLCOLOR TRL341G21CRT T/POLCOLORPHILIPS 14CRT Philipschunghwa StereoPage Page Repair No PowerKERJ2C,KEJ2C SHJ2C / SHJ2C CRT,A51QAE320X45CQMAPage Page Page Page Page Page Page Page 2K HR SL OLD Parts NEW PartsCAP,CER 560P − 2K HR SL ZENER,MTZJ9.1C IC3 Enter AV Mode Sleep Menu PowerDate IC3