Caution For Replacing Parts - Panasonic SA-BTT405P Service Manual

13.3.

Caution for Replacing Parts

13.3.1. Standard Inspect Specifications after Repairs
After repairing Digital P.C.B. Unit and Mechanism Unit, it is recommended to perform the following inspection to ensure
normaloperation of main unit.
No.
1 Turn on the power, and confirm items pointed out.
If a problem is caused by a BD-Video disc, DVD-R,
2
DVD Video, Audio-CD, or MP3, playback the test disc.
After checking and making repairs, upgrade the
3 firmware to the latest version.
Transfer [9] [9] in the service mode setting, and initialize
the service settings (return various settings and error
4
information to their default values. The laser time is not
included in this initialization).
After replacing the Mechanism Unit, transfer [9] [5] in the
5
service mode setting, and initialize the laser used time.
Use the following checklist to establish the judgment criteria for the picture and sound.
Item
Block noise
Crosscut noise
Dot noise
Picture disruption
Picture
Not bright enough
Too bright
Flickering colour
Color fading
Procedures
Contents
Items pointed out should reappear.
No abnormality should be seen in the picture, sound or
operation.
Make sure that [UPD OK] appears on the LED displays.
* [UNSUPPORT] display means the unit is already updated
to newest same version. Then version up is not necessary.
Make sure that [CLR] appears on the LED display.
After checking it, turn the power off.
Make sure that [CLR] appears on the LED display.
After checking it, turn the power off.
Check Item
Distorted sound
Noise (static, background noise, etc.)
The sound level is too low.
The sound level is too high.
Sound
The sound level changes.
46
Item to Check
Contents Check