Self-Diagnosis Result Display - Panasonic NV-MV20EG Service Manual

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2.4 SELF-DIAGNOSIS RESULT DISPLAY

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The "SELF-DIAGNOSIS RESULT DISPLAY & MEMORY function is built in this VTR.
It means that when the VCR detects undesirable condition, it can be displayed a "Error code (Two
numbers from the right)" with Service Mode 2.
Since the "Error code" is stored in the EEPROM, it can be displayed although after disconnected the
AC leads. It can be displayed with Service Mode 2.
(If a second error had been detected, only the most recent error is displayed. )
For more details, refer to the Service Manual for Z-Mechanism Chassis Order number
VRD9802005C2.
INDICATION
01 After cylinder lock is detected, the
cylinder does not start rotating again
even after tape unloading.
02 Cassette tape is not wound up during
the tape unloading except EJECT
mode.
03 Mechanism locks during mode
transition except EJECT mode.
04 Mechanism locks during tape
unloading.
06 Mechanism locks after tape
unloading in EJECT mode.
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CAUSE
Check the cylinder motor drive circuit.
Check the capstan motor drive circuit.
REMEDY/CHECK
1.
Check the loading motor drive circuit.
2.
Check the mechanism phase alignment.
3.
Check the mode switch.
1.
Check the loading motor drive circuit.
2.
Check the mechanism phase alignment.
1.
Check the loading motor drive circuit.
2.
Check the mechanism phase alignment for cassette holder unit.