Panasonic NV-DV2000 Service Manual page 8

1. Utilizing the Service Mode 7.
2. Utilizing the Extra DC power (batteries).
2.2.4.1. Utilizing the Service Mode 7
Procedures:
1. Remove the Top panel.
[Refer to the "Disassembly Procedures" section.]
2. Turn on the Service mode and select mode 7.
[Refer to the "Service Mode" section.]
In this mode, when the "STOP" button is pressed, loading motor rotates unloading direction.
Also when the "PLAY" button is pressed, loading motor rotates loading direction.
This action is effective only while either "STOP" or "PLAY" button is being pressed.
NOTE:
While loading/unloading operation, pay attention to the tape slack.
3. Press the "STOP" button until "7 02 00"(Cassette Down position) is displayed on the F.I.P. display.
4. Be sure to confirm no tape slack and take up the tape slack by rotating Capstan with hand if necessarily.
5. Press the "STOP" button until "7 02 03"(Cassette Eject position) is displayed on the F.I.P. display.
6. Take out the tape carefully.
2.2.4.2. Utilizing the Extra DC power (batteries)
Procedures:
1. Remove the Mechanism unit from the chassis.
[Refer to the "Disassembly Procedures" section.]
2. Remove the Digital C.B.A. from the Mechanism unit.
3. Remove the shield case of capstan unit.
4. Connect the Flexible card (VFK1530).
5. Supply the+B (4.5V) to VFK1530 to activate the unloading operation.
Loading.............Pin25,26 (+4.5V) Pin27,28 (GND)
Unloading.........Pin25,26 (GND) Pin27,28 (+4.5V)
In this case, stop supplying the power at just before the mechanism to be the unloading complete position (Tension post
is not retracted fully), otherwise, the tape slack can not be taken although capstan is rotated with hand.
6. Confirm that no tape slack and supply the power again to make full unloading position (Tension post is retracted fully).
Take up the tape slack by rotating Capstan with hand if necessarily.
7. Rotate the worm wheel with hand in counterclockwise, then take out the tape carefully.
http://cxema.ru
Fig. 2-9
Fig. 2-10
Fig. 2-11