I know that "jurassic" readers has no lateral sticker. Also, (I had two 1045 SN readers!) if the readers have problems with timecode, Chris should see the "timecode" led blinking often.
Old readers show the greed timecode led on itself in a different way than actual ones. My old readers showed exactly what they were reading, with green led more ore less lighted depending of how they were reding timecode; the led on the newer ones are showing the same of the one on DTS6:
- Timecode good = ON
- Timecode not good = OFF

No halfway.

Older types were better for troubleshooting IMHO. You could see exactly what readers were reading at that moment.

However newer type, I note, are very reliable and rarely they'll lost timecode.

To check the print, be sure the green LED is on and not blinking.

Please, DO NOT ADJUST THE READER !!! It will void your warranty. If only this print has a problem, it's probably not the reader.

The SYSTEM light should blink at all times, this tells you the player is fully booted and ready to go.

The lights on the drives themselves should wink when reading a disc. If the light on the drive comes on solid, it means it cannot read the disc.

If the light comes on solid, move the discs: Swap discs in "A" and "B" drives. See if the problem repeats.

If it repeats, see if the problem follows the disc or the drive.

If it follows the drive, it will need to be replaced. Chances are you'll have to get a drive kit.

If the problem follows the disc, look at the disc for dirt or scratches. Dirt can be wiped off with a clean soft cloth. Wipe from inside and straight out, do not wipe in a circle. Scratched discs should be replaced. I can send you replacement discs. If you want them, you'll need to send me an email.