Denon avr-1708 avr-1508 avr-688 avr-588 avr-488 avr-1609 avr-589 avr-1709 ost-c1500 Service Manual

 

 

       

 

 

 

 

No. : 

 OST-C1500 

July 23, 2009 

 

 AVR-1508, 

AVR-588, 

AVR-488, AVR-1708, AVR-688, AVR-1609,   

AVR-589, 

AVR-1709 

 

     

Countermeasure for "HDMI P.W.B. UNIT" issues.

Countermeasure is applicable only upon claim from the customer. This 
countermeasure is not intended and need not be applied to stock units.

 

 

 

 1) In the DSP processing mode, the noise occurs from the speaker.  

2) In the DSP processing mode, the audio signal is not output from the speaker.  
3) In the DSP processing mode, the noise is output, and the audio signal is not 
output afterwards.   
4) When the HDMI input is used, the video signal is not output. 
 

 
Solution:

  Countermeasure is applicable only upon claim from the customer. 

MODIFICATION: Please modify the defective unit when the symptom is not 
improved after you pull out and insert the "HDMI P.W.B. UNIT" as outlined in 
service bulletin OST-C1375.

 
5-1: AVR-1508/1708/488/588/688 
 
1) Remove the Top cover.  
2) Remove the "HDMI P.W.B. UNIT".  
3) Connect between 4 pin of CP904 on "HDMI P.W.B. UNIT" and JP373 on "2CH 
AMP P.W.B. UNIT" with a 24 ga. wire (nsp, L=15cm, AWG24 UL1430). 

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