Denon AVR-5805CI, AVR-5805, AVR-4806CI, AVR-4806, AVR-4306 Service Bulletin

100 Corporate Drive Mahwah, NJ 07430

Service Bulletin

No. : OST-F1125-1
Date:

July 21, 2008

_____________________________________________________________

Model: AVR-5805CI, AVR-5805 with 1080p upgrade (SPK-553, SPK-555

and SPK-556), AVR-4806CI, AVR-4806 with 1080p upgrade (SPK-554, SPK-557
and SPK-558), AVR-4306, AVR-3806, AVR-2807, AVR-987, AVR-2307CI and
AVR-887

Subject: Countermeasure for improving the detection of an HDMI Monitor.

Symptom: In some instances the unit will fail to detect the HDMI monitor. This

error can occur at the low temperatures, the following similar phenomenon
occurs when the voltage on the terminal for detecting the connection of the HDMI
of the connected Monitor is low.

• When the LC45BE2W manufactured by SHARP® has been connected to the
unit, it takes time until it indicates the normal picture after leaving it over a night.

• When the LC45BE2W manufactured by SHARP® has been connected to the
unit, it takes a time for the monitor indicate a normal picture if one hour (after the
Power is turned off) passes.

Caution!

• If the LP-Z3 by SANYO® has been connected the unit, it does not display a
picture properly.

Before you update the Firmware, please ask to the customer

what Display they are using.

Solution: COUNTERMEASURE AND THE MODIFICATION (to be performed

upon repair and refurbishment of these units):
Please apply the following modification to your customer's unit and to the unit
upon refurbishment.

______________________________________________________________________________________

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:

1) AVR-5805CI, AVR-5805, (SPK-335, SPK555 and SPK-556):
Replace R309 and R359 (10kΩ resistors) on the 1U-3755 Unit with 47kΩ
resistors.

2) AVR-4806CI, AVR-4806, (SPK-554, SPK-557 and SPK-558):
Replace RR459 (10kΩ resistor) on the 1U-3757 Unit with 47kΩ resistor.

3) AVR-4306:
Replace RR458 and RR459 (10kΩ resistors) on the 1U-3698 Unit with 47kΩ
resistors.

4) AVR-3806:
Replace RR458 and RR459 (10kΩ resistors) on the 1U-3705 Unit with 47kΩ
resistors.

5) AVR-2807, AVR-987:
Replace RR458 (10kΩ resistor) on the 1U-3737 Unit with 47kΩ resistor.

6) AVR-2307, AVR-887:
Replace R3109 (10kΩ resistor) on the HDMI Unit with the 47kΩ resistor.

Parts:

Ref# Description Part Number

nsp* 47 k ohms, 1/16W, J:+5/-

nsp*

5%, Chip Resistor,

Size:1005 (1.0mm x

0.5mm)

nsp*: No Spare Parts. (The nsp parts are standard parts; therefore we do not
indicate the parts name and parts number.) Please procure this item locally.

Serial Number Range:

The update applies to the following serial number range: (Last 5-digits shown)

AVR-5805CI: 00163 ~ later
AVR-3806: 51001 ~ later
AVR-4806CI: 01506 ~ later
AVR-4806CI: 00101 ~ later
AVR-2807: 35651 ~ later
AVR-4306 BLK: 09346 ~ later
AVR-4306 SIL: 00701 ~ later
AVR-987 BLK: 09001 ~ later
AVR-2307CI: 15839 ~ later
AVR-887: 10011 ~ later
AVR-3806 BLK: 27551 ~ later
AVR-3806 SIL: 02301 ~ later

______________________________________________________________________________________

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: