Panasonic DMR-ES15EB Service Manual page 51

No.
1 Turn on the power, and confirm items pointed out. Items pointed out should reappear.
2 Insert RAM disc.
3 Enter the EE (TU IN / AV IN - AV OUT) mode.
4 Perform auto recording and playback for one
minute using the RAM disc.
5 If a problem is caused by a VCD, DVD-R, DVD-
Video, Audio-CD, or MP3, playback the test disc.
6 After checking and making repairs, upgrade the
firmware to the latest version.
7 Transfer [9][9] in the service mode setting, and
initialize the service settings (return various
settings and error information to their default
values. The laser time is not included in this
initialization).
Use the following checklist to establish the judgement criteria for the picture and sound.
Item
Block noise
Crosscut noise
Picture
Dot noise
Picture disruption
Not bright enough
Too bright
Flickering color
Color fading
12. Block Diagram
12.1. Power Supply Block Diagram
12.2. Analog Video Block Diagram
12.3. Analog Audio Block Diagram
Procedure
Contents
The Panasonic RAM disc should be recognized.
No abnormality should be seen in the picture,
sound or operation.
No abnormality should be seen in the picture,
sound or operation.
*Panasonic DVD-RAM disc should be used when
recording and playback.
No abnormality should be seen in the picture,
sound or operation.
Make sure that [FIRM_SUCCESS] appears in the
FL displays.
*[UNSUPPORT] display means the unit is already
updated to newest same version. Then version up
is not necessary.
Make sure that [CLR] appears in the FL display.
After checking it, turn the power off.
Check Item
Distorted sound
Noise (static, background noise,
etc.)
Sound
The sound level is too low.
The sound level is too high.
The sound level changes.
51
Item to Check
Contents Check