No.ProcedureItem to Check
1 Turn on the power, and confirm items pointed out. Items pointed out should reappear.
2 Insert RAM disc.The Panasonic RAM disc should be recognized.
3 Enter the EE (TU IN / AV IN - AV OUT) mode.No abnormality should be seen in the picture,
sound or operation.
4 Perform auto recording and playback for one No abnormality should be seen in the picture,
minute using the RAM disc.sound or operation.
5 If a problem is caused by a VCD, DVD-R, DVD-No abnormality should be seen in the picture,
Video, Audio-CD, or MP3, playback the test disc.sound or operation.
6 After checking and making repairs, upgrade the Make sure that [FIRM_SUCCESS] appears in the
firmware to the latest version.FL displays.
*[UNFORMAT] display means the unit is already
updated to newest same version. Then version
is not necessary.
7 Transfer [9][9] in the service mode setting, and Make sure that [FACT INIT] appears in the FL
initialize the service settings (return various display.
settings and error information to their default After checking it, turn the power off.
values. The laser time is not included in this
initialization).
8 To replace the RAM drive, reset all the information Maku sure that [TEST AV1] appears in the FL
(including the laser time) in the process mode 1 display.
setting. After checking it, turn the power off.
*The laser time is the total time that DVDs or CDs
have been played or recorded.It is recorded on
the Digital P.C.B..
Use the following checklist to establish the judgement criteria for the picture and sound.
ItemContentsCheckItemContents
Block noise Distorted sound
Crosscut noise Noise (static, background noise,
etc.)
Picture Dot noiseSound The sound level is too low.
Picture disruption The sound level is too high.
Not bright enoughThe sound level changes.
Too bright
Flickering color
Color fading
18. Voltage and Waveform Chart
Note)
- Indicated voltage values are the standard values for the unit
measured by the DC electronic circuit tester (high-impedance) with
the chassis taken as standard.
60 |
ACEC
