Denon AVR-4810CI Service Manual page 5

CAUTION IN SERVICING
Before the Digital P.W.B. are replaced
If you cannot specify the cause of the digital PWB defect, carry out "Initializing" → "Update to latest firmware".
The defect may be cleared.
・See the following for the method of initializing the μcom.
Initializing AV SURROUND RECEIVER
AV SURROUND RECEIVER initialization should be performed when the µcom, peripheral parts of µcom, and Digital P.W.B.
are replaced.
1. Switch off the unit.
2. Hold the following STANDARD button and DSP SIMULATION button, and switch on the unit.
3. Check that the entire display is flashing with an interval of about 1 second, and release your fingers from the 2 buttons and
the microprocessor will be initialized.
Note:・If step 3 does not work, start over from step 1.
・ All user settings will be lost and this factory setting will be recovered when this initialization mode.
So make sure to memorize your setting for restoring after the initialization.
JIG to use for servicing
When you repair the printing board, you can use the following JIG. Please order to Denon Official Service Distributor in your
region if necessary.
Extention cable kit
00D SPK- 561 EXTENSION UNIT KIT
00D SPK- 562 TUCP CONN. JOINT KIT
Extention cable for Idling Current
Parts Number for Extension Cables and Quantity of Unit.
Parts Number Parts Name
612050082004D 6P 250mm NH
612050083007D 8P 250mm NH
How to use and Adjust Idle Current.
1. The thin and hard plate (ex. Ruler) is fixed with the tape behind the cable.
2. The voltmeter is connected with the other side of the extension cable.
3. Refer to ADJUSTMENT(Idling Current).
2,3
1,2
: 1 Set
: 1 Set
Q'ty / unit Remarks
1 L=250mm 6P NH Cable
1 L=250mm 8P NH Cable
AVR-4810CI/AVR-4810
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