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1.8 TAPE EJECTION IN CASE OF EMERGENCY
When the cassette tape cannot be ejected normally, take it out
by the following methods.
1.8.1 Tape Ejection Using Forced Eject Mode
(Short-circuiting of Internal TP)
GY-DV500 is provided with a compulsory eject mode for use in
case the button operations are not accepted due to a malfunc-
tion of the mechanism control circuitry. When an attempted
operation of the operation buttons is not accepted, set the com-
pulsory eject mode as described below before removing the
tape.
Fig. 1-8-2(2)
(4) If the tape slackens, take it up by rotating the shaft at the
top of the capstan motor in the direction of the arrow using
a sharp-tipped object (chip IC replacement tool, etc.).
(5) Repeat steps (3) and (4) above until the tape is taken up
completely.
(6) After confirming that the tape has been taken up completely,
rotate the gear of the cassette housing assembly in the di-
rection of the arrow in order to eject the cassette tape.
Fig. 1-8-2(1)
(3) Apply 3 V DC to the electrodes at the top of the loading
motor (red wire to + pole, brown wire to - pole) to unload
the tape. Unload it little by little because it could be dam-
aged or contaminated by grease if the pole base assemblies
are returned completely beyond the position of the tape.
1.8.2 Tape Ejection without Using the Forced Eject Mode
Activate the loading motor by applying DC voltage to its two
terminals.
Fig. 1-8-1
(1) Remove the left side cover (see section 1.2.1).
(2) With the power supply on, short-circuit TP107 on the DV
MAIN board with the GND using a wire, etc.
(3) Forced ejection is activated to eject the tape.
CAUTION
䡲 This mode is effective only when the electrical and me-
chanical systems of the mechanism unit are normal and a
tape ejection operation is not accepted due to a problem
of the electrical system.
䡲 If there is a problem in the mechanical system of the unit,
this mode may be ineffective. If compulsory ejection is per-
formed in such a case, the tape could be damaged or cut.
TP107
DV MAIN board
Red wire
Brown wire
Shaft
Gear
(1) Turn off the power supply to the unit.
(2) Flip open the DV MAIN board to expose the mechanism
(see section 1.6.3).
NOTE
When a forced ejection is not accepted because the loaded
cassette tape cannot be ejected due to a fault in the electri-
cal system or because of some problem in the mechanism
unit, eject the tape by using the following procedure.
However, as this mode drives the loading motor, it assumes
that the mechanical system is operating normally.
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