Hitachi VM-H57A Instruction Manual page 60

General Maintenance
Symptom
EJECT or TROUBLE appears in the
viewfinder.
EJECT OR TROUBLE DISPLAY
Check Point & Correction
Remove the cassette and then try to
reinsert, remove it several times. If the
indication is still shown in the
viewfinder, use a cleaning tape to clean
the heads and replace the cassette.