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Service Bulletin
No. : OST-C1562
Date: August 18, 2009
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Model: AVR-1910, AVR-790


Subject: 1080p issues when a specific TV (Sharp LC-**XJ1) and an A/V
AMP are connected via HDMI.
Countermeasure is applicable only upon claim from the customer.


Symptom: When the Analog Video signal "VIDEO/S-VIDEO/Component
480i/576i" is output by 1080p, the picture of TV might not be able to be
reproduced correctly

Solution: Additional capacitors will reduce the noise from DC/DC converter
power supply.

MODIFICATION:
1) Remove the "HDMI B'D" (Refer to page 8 of Service Manual).
2) Exchange C387 to new parts.
3) Add new capacitor to C482.
4) Attach the "HDMI B'D" (Refer to page 8 of Service Manual).




______________________________________________________________________________________
CONFIDENTIALITY NOTICE:
The information contained in this document is intended for the exclusive use by DENON Authorized Service Centers and their
employees. This document may contain information that is privileged, confidential and may be protected from disclosure under
applicable laws and terms of the DENON Service Agreement. Any distribution, disclosure, dissemination or copying of this
document and the information it contains is prohibited. No responsibility will be accepted by DENON for any damage, injury or loss
resulting from the misuse of the information contained in this document.
______________________________________________________________________________________
CONFIDENTIALITY NOTICE:
The information contained in this document is intended for the exclusive use by DENON Authorized Service Centers and their
employees. This document may contain information that is privileged, confidential and may be protected from disclosure under
applicable laws and terms of the DENON Service Agreement. Any distribution, disclosure, dissemination or copying of this
document and the information it contains is prohibited. No responsibility will be accepted by DENON for any damage, injury or loss
resulting from the misuse of the information contained in this document.
Parts:

Ref # FORMER NEW
Description Part Number Description Part Number
C387 ELECT 22UF- 963134004310S 22uF/6.3V 134750095503S
MV/6.3V Low
impedance
capacitor
C482 N/A N/A 10uF/6.3V NSP*
size:2125
chip capacitor
*NSP = Please procure this part locally.

Serial Number Range:
(Last 5-digits)

AVR-1910 00001 ~ 10936
AVR-790 00001 ~ 06506




______________________________________________________________________________________
CONFIDENTIALITY NOTICE:
The information contained in this document is intended for the exclusive use by DENON Authorized Service Centers and their
employees. This document may contain information that is privileged, confidential and may be protected from disclosure under
applicable laws and terms of the DENON Service Agreement. Any distribution, disclosure, dissemination or copying of this
document and the information it contains is prohibited. No responsibility will be accepted by DENON for any damage, injury or loss
resulting from the misuse of the information contained in this document.