Panasonic NV-FJ621B, Service Manual

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Note:
The tape material itself is the same in both types.
2.4. SELF-DIAGNOSIS RESULT DISPLAY
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 left)” 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 VRD9612M129.
INDICATION CAUSE REMEDY/CHECK
01 After cylinder lock is detected, the cylinder does
not start rotating again even after tape unloading. Check the cylinder motor drive circuit.
02 Cassette tape is not wound up during the tape
unloading except EJECT mode. Check the capstan motor drive circuit.
03 Mechanism locks during mode transition except
EJECT mode.
1. Check the loading motor drive circuit.
2. Check the mechanism phase alignment.
3. Check the mode switch.
04 Mechanism locks during tape unloading.
1. Check the loading motor drive circuit.
2. Check the mechanism phase alignment.
06 Mechanism locks after tape unloading in EJECT
mode.
1. Check the loading motor drive circuit.
2. Check the mechanism phase alignment for cassette holder un
07 During recording mode, recording signal is less
than the normal condition. Protection of the over-current flowing in transis
which produces the power supply for recording
mode.
08 Recording circuit works except recording mode. Check the recording circuit.
16 Cylinder lock detection. Check the cylinder unit and the cylinder motor
drive circuit.
17 Supply reel mechanism lock detection Check the supply reel mechanism and the sup
reel circuit.
18 Take-up reel mechanism lock detection Check the Take-up reel mechanism and the
Take-up reel circuit.
2* PG shifter automatic adjustment error. Check the servo/system control circuit and the
cylinder unit.
Fig. T1 Self-Test indication Display
2.5. CAUTION FOR AC MAINS LEAD (NV-FJ621B)