Sony DSR 20, DSR30 DV deck
One or any combination of the following.
The video tape recorder would not accept a tape.
The VTR would not eject a tape.
The VTR would show an error code and fail to operate.
Remove the top cover.
Most of these video tape recorder decks will do a reset if you interrupt the power to the unit. Do not think by turning the machine off and then on again this will do a reset. Unplug the power cord.
Next, do a visual inspection with no power applied.
Try to load a tape. If a tape is already in the machine, view the action of the eject process. There is a white gear on the right hand side about mid way back from the front of the deck. View the action of this gear.
There are two gears on either side of the carriage that will move the carriage back and forth. Try gently to move the gears back and forth a bit to see if the assembly is seized (not normal) or there is some gear slack (normal).
If the gear, that we have identified from our past repairs and having a high probability for failure, has broken teeth the load mechanism will be frozen.
There is a very small toy like plastic gear that will have some gear teeth broken if the user presses too fast or hard on to a tape being inserted into the machine. The tape transport unit needs to be partially removed and the top carriage holder unit that holds the tape when it is inserted into the machine and carries the tape back to the head assembly needs to be removed. This is a rather involved process and should not be attempted by anyone not having a good dose of common sense and practical experience servicing decks and the service manual. It is recommended that a special Sony lubricant be applied to the gears. I noticed that the white gear would rub on the metal gear housing. I applied some light lubricant to the housing cover showing traces of contact.
Service manual gear location: page 6-4
Part reference number: 710
Part number: 3-967-591-01 Gear (B). List $4.80.
Lubricant part number: 7-651-000-09 marked “FLOIL SG-055G, 20g., List $14.50.