Now you will be greeted with the main guts: The whole sled including the disc spindle motor is mounted on a rigid metal frame which is secured to the plastic frame of the drive using anti-vibration silicone grommets — this reduces noise and vibration transfer to the case, but also ensures that the sled and spindle all vibrate in harmony with the disc to maintain good tracking at high speeds. I have no idea, but if somebody does, please do go ahead and write a reply. Thank you for sharing your findings. I have to emphasize that the tweaking was done in very small steps. I was sure that the laser is working because I was seeing the red laser light not directly, of course: One of them is the serial number, the lighter colour one appears to provide calibration data — possibly to do with skew angles of the laser focus.

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So there we are — a look into the innards of a dead optical drive. I will sorely miss these drives, but that being said, laser failure liteon sohw-1633s to be a liteon sohw-1633s trait amongst many LiteOn drives — the fact mine have lived such long and productive lives is something to marvel at on its own. One interesting thing is that the laser pickups have QR codes on them — disassembling both drives and scanning their pickups liteoj us the following photo: I have been able to fix the non-reading issue of my drive.

The assembly itself is mounted on smooth rails, driven liteon sohw-1633s a stepper motor which is mounted below the sled.

Liteon sohw-1633s 3, at With that quick diagnosis, I take a sohhw-1633s to salute these fine drives, and send them onto their way towards the garbage. Directly in the middle of the photo is the liteon sohw-1633s and the main pickup assembly which contains the lasers and photodiodes which read and write your data.

An Obiturary: LiteOn SOHWS, and LHA1P | Gough’s Tech Zone

They were my drives of choice when it came to liteon sohw-1633s. Thanks for any help! Remove the base plate. Well first, turn them over and undo the four screws that secure the base-plate to the contraption.

But the community support always pulled through, and these liteon sohw-1633s also some of my favourite drives when it came to overspeeding media such as the RICOHJPNR01 4x discs which would faithfully burn at 8x, everytime.

LITE-ON DVDRW SOHW-1633S resources, firmwares and drivers

While liteon sohw-1633s testing for the Milleniata post, I discovered that my two trusty quality test workhorses were dead. You will also see the flash chip with the firmware, covered with a label that has liteon sohw-1633s initial firmware revision the drive shipped with — BS The little chip near the power supply bypass caps is the EEPROM which contains unique calibration data for liteon sohw-1633s actual drives.

The LiteOn benefits extended further, including a well-documented way to reset the RPC region control lockout settings, and ways to flash back to RPC-1 if necessary. March 3, at 8: This allowed us to gain speed, free of charge, courtesy of a few bit-twiddles. You will see the left is the front panel loader, liteon sohw-1633s this normally contains a tray motor, some gears, a few buttons, a position encoder, headphone socket, potentiometer and an LED.

Unfortunately, I cannot tell you which potentiometer does what — they could be liteon sohw-1633s, focus, tilt or something else altogether. How to open sohw-1363s drives?

The data from the left one is 0. Some of these contain ball bearings which make a wooshing sound liteon sohw-1633s the disc spins up and down common for LiteOn drives which acts as a counterbalance against unbalanced discs washing machines actually have something similar as well!

An Obiturary: LiteOn SOHW-1633S, and LH-18A1P

One interesting thing is that the sohw-133s pickups have QR liteon sohw-1633s on them — disassembling both drives and scanning their pickups gives us the following photo:. March 8, at The SOHWs suffered some likely liteon sohw-1633s chip failure and was unable to control its tray, or spindle motor.

Use the paperclip to emergency-eject the tray, unclip the front bezel from the tray, then the body, and you should be left with the following:.

I was liteon sohw-1633s that the laser is working because I was seeing the red laser light not directly, of course: The other potentiometer worked the same, but for reading DVDs. The whole sled including the disc spindle motor is mounted on a rigid metal frame which is secured to the plastic frame of the drive using anti-vibration silicone grommets — this reduces noise and vibration transfer to the case, but also ensures that the sled and spindle liteon sohw-1633s vibrate in liteon sohw-1633s with the disc to maintain good tracking liteon sohw-1633s high speeds.

This entry was posted in ComputingObituary and tagged computer hardwaredead litein, optical disc. Use the paperclip to emergency-eject the oiteon, unclip the front bezel from the tray, then the body, and you should be left with the following: This is connected by ribbon to the main board on the right.

I have to emphasize that the tweaking was done in very small steps. It was something I had noticed and it liteon sohw-1633s me nuts, which is why I always had two burners — one Lite-On, and one non-Lite-On.