Panasonic SAVK-82-DGN Service manual

ORDER NO. MD0707046SE

DVD Stereo System

SA-VK82DGN

Colour

(S) .... Silver Type

Subject : F61 Countermeasure.

Please use this service manual together with the service manual for Model No.[(SA-VK82DGN-S, Order No.
MD0506223C3).

CONTENTS

Page Page

1 Service Note 2

2 Troubleshooting Procedure s

3 Parts Replacement 4

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S

A-VK82DGN

1 Service Note

1.1. Symptom

No operation of unit upon power on. FL display shows spurious characters or “F61”. Sound of the deck motor (deck mechanism)
can be heard.

1.2. Cause

D2900 breakdown over time because power dissipation is over the specification during standby condition. The diode shorts when
it breakdown which causes diode becomes very hot, causing P.C.B discoloration and eventually becoming shorted opening
FP5833, when open cuts off power to the 15V & +/-9V regulators, so set displays F61 and cannot power on. This may leads to the
failure of deck mechanism due to damage of components in the tape drive & head bias circuit (deck circuit).

2 Troubleshooting Procedures

Step 1 : Check fuse protector FP5833 on Power P.C.B. for open circuit. If it is open circuit replace part & proceed to next step.

Step 2 : Check resistor R2952 & R2969 and replaced.

Fig. 1

Fig. 2

Step 3 : Check diode D2900 if it is leaky. If it is leaky, replace part.

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