Denon S-5BD Service Manual page 6

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
S5BD initialization should be performed when the µcom, peripheral parts of µcom, Digital P.W.B., BE P.W.D and BD
mechanism are replaced.
1. Remove the power plug.
2. While pressing 9 and SOURCE button simultaneously, plug the power cord into a power outlet.
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 m+emorize your setting for restoring after the initialization.
Service tools
Measuring Disc:
z Refer to "MEASURING METHOD AND WAVEFORMS".
Service Jigs
When you repair the printing board, you can use the following JIG (Extension cable kit). Please order to Denon Official
Service Distributor in your region if necessary.
Extention cable kit
00D SPK- 562 TUCP CONN. JOINT KIT
CD/TCD-784
DVD/VT502 or TDV-520A
BD/ABD-520 or BLX-108
: 1 Set
2,3
6