Panasonic PV20DF25 - MONITOR/DVD COMBO, Service Manual

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5.1.5. DVD SERVICE MODE
This unit has a Self-Diagnostic function which detects a
problem or malfunction within the unit and displays it on the TV
screen.
5.1.5.1. How to enter DVD Service Mode
1. Set the unit to DVD mode.
2. Press and hold the STOP, SKIP+, and VOL- buttons on the
unit together for over 5 seconds. The adjustment overlay
will appear on the TV screen.
Fig. 5-1
3. Press the DISPLAY key on the remote control to enter DVD
Service Mode I.
Fig. 5-2
4. Press the LEFT or RIGHT key on the remote again to enter
DVD Service Mode II.
Fig. 5-3
Note:
a. After replacing the DVD Unit, press the CLEAR key
on the remote in this mode. The total elapsed "Disc
Motor on" time (in hours/minutes) will be cleared to
0.
b. If 01 or 02 is always displayed in 9 DM STATUS,
replace the DVD Unit because the Disc Motor is
defective.
5. To confirm the value of JITTER and the value of LASER
(current), insert the DVD Test Disc into the DVD Unit.
6. To release from this mode, turn off the power.
5.1.5.2. Troubleshooting hint (standard)
for this mode
It can be determine whether the DVD Mechanism Unit is
defective by checking the value of JITTER and the value of
LASER (current).
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PV-20DF25 / PV-27DF25 / PV-27DF5 / PV-20DF25-K / PV-27DF25- K