Question about Panasonic Televison & Video
I have also discovered a number of special things you can do using special key presses. These have not been documented in any of the user manuals. As an aside, one time I was trying to manually set the clock. There is an automatic clock setting mechanism, but it's never correct. Even if it is, if the program you are recording starts 1 second early, it looks like it started at "8:59 pm" instead of "9:00 pm". The way I set the clock is 30 seconds before the top of the minute (At exactly 30 seconds after 9:00, my clock goes to 9:01). This way, you will have a ±30-second window at the top of the hour to get the time-stamp correct. At any rate, I was trying to set the clock manually, but that function was "grayed out". I tried the "Reinitialize Settings", but that didn't help. I tried to change the TV-Guide settings, but that didn't help either. I tried to switch between cable and TV, but that didn't help (and somehow even that became grayed out). I called Panasonic Tech Support. I was told that my system RAM had gotten corrupted and I had to send the unit in for service! This made no sense to me. I asked her if there wasn't a way to clear the RAM back to some starting point. I was told there wasn't, and please send the unit in for service. Well, as it turns out, there IS a way to do that! (See Commands) Another time, I (somehow?) managed to make the DVD Drive tray "Lock". If I tried to eject a DVD, it would display "LOCK" and refuse to open. At least this time, when I called tech support, I was told what to do - but it really should have been in the manual.
To toggle the disk eject from "LOCK" to "UNLOCK": With the unit ON, press and hold "Power" and "Stop" for 5 seconds.
To eject a disk if the unit won't operate (U99, etc.): With the unit OFF, press and hold "Power", "Stop" and "Channel Up" for 5 seconds.
To initialize ALL parameters to factory defaults: With the unit OFF, press "Skip Rev" ( |<< ) and "Time Slip" and "Open/Close" for 5 seconds.
To enter "Service Mode": With power off, press "Stop" and "Time Slip" and "Open/Close" for 5 seconds. "SERVICEMODE 00" is displayed.
What follows are the more useful commands you can perform. You use the remote to key in a 2 number value. You can usually return back to the "Service Mode" by entering "00". If you get stuck, hold the power key for 10-12 seconds or until the unit shuts off. Try to avoid unplugging the unit while in service mode. In fact, because losing power while writing to either the hard disk or a DVD-R or DVD-RAM can lose everything, I use a small "UPS" (Battery backed-up Power Source) to power my units. This way, if the AC Mains go out, I don't damage anything…
Oh, and DO NOT experiment with any number combinations that aren't documented here. If you do, you may wish you hadn't…
00 = Return to Service mode start.
02 = Display Firmware Versions. The display will show the following for 3 seconds each:
1. DVD Region Code (should be Region 1 for USA)
2. Main Firmware Version (0950DL, or something like that)
3. Timer firmware Version (0110DC, or something like that)
4. DVD Drive firmware version (J125, or something like that)
5. ROM checksum (I think) - It should be all zeroes.
The ROM checksum will remain. You can get back to Service Mode with 00.
41 = The number of hours the laser in the DVD drive has been active.
51 = All display segments are turned on. Use 00 to exit.
61 = Date the unit was manufactured. YYYYMMDD
To exit Service Mode, hold the power key for 10-12 seconds until the unit shuts off.
Posted on Aug 05, 2008
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Posted on Jan 02, 2017
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