Brand: KENWOOD
Category: Audio System
Document Type: Parts/Service
Language: EN
Parts/Service for DV-505/DVF-R4050/-S
Uploaded: Nov. 21, 2025, 8:19 p.m.
How to open the tray if it does not come out.
1. Turn the gear ccw in the direction of the arrow in the drawing through the hole on loading chassis bottom. 2. Pull out the tray frontward by hand when it comes just out.How to Remove the Tray
1. Remove the front panel, front chassis, power supply and the left mecha. frame. 2. Pull out the tray frontward (1) to match the dent of tray (2) to the protrusions of the mecha. base (3). 3. Remove the tray upward (4).How to assemble the Tray
1. Adjust the position of the plastic cam lifter (1) and main gear (2) in the drawing (1) so that the traverse unit will reach the lowest position. 2. Attach the tray in the direction (3, 4) of the arrow in the drawing. 3. Push the tray backward.Troubleshooting and error codes
| Note related to transportation and movement |
| Before transporting or moving this unit, carry out the following operations. |
| 1. Set the POWER key to ON without loading a disc. |
| 2. Wait a few seconds and verify that the display shown appears. |
| 3. Set the POWER key to OFF. |
| Beware of condensation |
| When the difference between the internal temperature of the unit and external atmosphere is large, dew (mist) may be produced on the internal parts of the unit. In such a case, turn the unit ON and leave it for a few hours until the condensation has dried up. |
| Be especially careful in the following conditions: |
| When the unit is brought into a place where there is a large difference in temperature between the previous location, when the humidity of the listening room is high, etc. |
| Operation to reset |
| The microprocessor may fall into malfunction (impossibility to operate erroneous display, etc.) when the power cord is unplugged while power is ON or due to an external factor. In this case, execute the following procedure to reset the microprocessor and return it to normal condition. |
| Please note that resetting the microprocessor clears the contents stored in, it returns the microprocessor to the condition when it left the factory. |
| • In POWER ON condition, keep the DISC 3 key and the (Skip) key pressed at the same time. |
| When both keys are pressed, the region code of the unit, the software version, etc. will be displayed on the display. (When nothing is done, the display of this information continues.) |
| Example: 71. 16.06:14 |
| Press the DISC 4 key and the key at the same time. |
| "BYE" will be shown on the display. |
| Press the ON/OFF key to go to Power OFF. |
| When Power ON is performed with the ON/OFF key, the settings become the default factory settings. |
| The marking of products using lasers (Except for some areas) |
| CLASS 1 LASER PRODUCT |
| The marking is located on the rear panel and says that the component uses laser beams that have been classified as Class 1. It means that the unit is utilizing laser beams that are of a weaker class. There is no danger of hazardous radiation outside the unit. |
| Attention |
| Please contact our KENWOOD Service Department in your side if you want the service information; Circuit Description. Full Described Parts list and so. Information is available to you by internet from us. |