JVC GRDVM90U
Manual de Servicio

1.7 HOW TO TAKE OUT CASSETTE TAPE MANUALLY � How to remove cassette tape manually from the set If the cassette tape is not ejected from the cassette housing because of some electric trouble, it can be removed from the set by the temporary measure that is to turn the loading motor forcibly as mentioned below. Through the removing work, pay heed to the exterior parts such as the covers, etc. as well as to the cassette tape to get nothing damaged. <Procedure> 1. Disconnect the power supply (battery or DC cord) from the set. 2. Dismantle the deck operation, front cover assembly referring to the section 1 (page 1-4, 1-5). Note: When and after dismantling the front assembly, pay careful attention to the internal components such as the OP block assembly (lens), battery terminal, etc. that are exposed after the front assembly is removed. 3. Open the cassette cover assembly completely and hold it open through the work. 4. Supply 3 V DC to the terminals (electrodes) on the top of the loading motor to slide the slide deck assembly to the front side, and stop the power supply when both the pole bases are positioned in the unloading status inside the tape. Since the tape remains as it is not wound up at that time, pay careful attention to the tape

not to damage it and not to soil it with grease, etc. If unloading operation is continued after both the pole bases return to their respective positions inside the tape, the mechanism enters the eject mode and the cassette housing assembly is lifted up. If it occures, the pulledout tape may be caught in the cassette lid and the tape may be resultingly damaged. 5. Turn the center gear assembly with a sharp-pointed thing (chip IC replacing jig, etc.) in the direction of the arrow to wind up the tape. Carefully turn the center gear assembly not to damage the tape. If the tape cannot be wound up by turning the center gear assembly, it is thinkable that the idler arm assembly is positioned not to engage with the reel disk assembly. If so, shift the mechanism mode so that the idler arm assembly is correctly engaged with the reel disk assembly. After fine adjusting the engagement, try to wond up the tape is the same manner once more. In such the event, it is recommended to shift the idler arm assembly slightly in the loading direction. 6. After confirming that the tape is completely wound up, proceed with unloading operation until the mechanism enters the eject mode. Then, take the cassette tape out of the cassette housing. 7. After removing the cassette tape, check to see if the manually wound part of the tape is not soiled with grease, etc. At the same time, check the mechanism assembly, particularly the tape transport system, whether there is something abnormal or not.

(DC3V)
CAPSTAN MOTOR

DRUM

2 3 4
REEL DISK (SUP)

1

REEL DISK (TU)

Fig. 1-7-1 1-11