JVC UXT77
Manual de Servicio

UX-T77 <<Cassette mechanism section>>
Cassette mechanism Removing the Playback/Recording & Eraser Head (See Fig. 1 to 3) 1. While shifting the trigger arms seen on the right side of the head mount in the arrow direction, turn the flywheel R in counterclockwise direction until the head mount has gone out with a click (See Fig. 1). 2. When the flywheel R is rotated in counterclockwise direction, the Playback/Recording & Eraser head will be turned in counterclockwise direction from the position in Fig. 2 to that in Fig. 3. 3. At this position, disconnect the flexible P.C. board (outgoing from the Playback/Recording & Eraser head) from the connector CN31 on the head amplifier & mechanism control P.C. board. 4. After dismounting the FPC holder, remove the flexible P.C. board. 5. Remove the flexible P.C. board from the chassis base. 6. Remove the spring 1 from behind the Playback/Recording & Eraser head. 7. Loosen the reversing azimuth screw retaining the Playback /Recording & Eraser head. 8. Take out the Playback/Recording & Eraser head from the front of the head mount. 9. The Playback/Recoring & Eraser head should also be removed similarly according to Steps 1 to 8 above.

Flywheel R

Head mount

Trigger arm

Fig. 1
Playback/Recording & eraser head Flexible board Spring 1 Trigger arm

CN31 Reassembling the Playback/Recording & Eraser head (See Fig.3) 1. Reassemble the playback head from the front of the head mount to the position as shown in Fig. 3. 2. Fix the reversing azimuth screw. 3. Set the spring 1 from behind the Playback/Recording & Eraser head. 4. Attach the flexible P.C. board to the chassis base, and fix it with the FPC holder as shown in Fig. 3. 5. The Playback/Recording & Eraser head should also be reassembled similarly to Step 1 to 4 above. Head amplifier & mechanism control P.C. board Flywheel R

Fig. 2
Playback/Recording & eraser head Reversing azimuth screw

Spring 1

Head mount Flexible board

CN31 FPC holder Head amplifier & mechanism control

Fig. 3

P.C. board

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