The four most common reasons for CD burning issues are:
- Low quality CD-R/RW discs
- Incorrect power supply.
- A malfunctioning CD/DVD drive
- Hard-drive fragmentation
The following information may help you pinpoint and resolve your problem.
1. LOW QUALITY CD-R/RW DISCS
Approximately 90% of the correspondence we received in years past regarding failed burns are due to error-prone CD-R media. Because the BR-900CD insisted on creating pressing plant-ready CD masters, only specific CD-R brands had a satisfactorily low error rate to burn properly.
However due to the age of the BR-900CD and the fact that it was discontinued years ago, we no longer have resources for which brands are compatible and where to acquire them unfortunately.
Below are a few brands that were compatible years ago:
Taiyo Yuden, Discmakers, Microboards, Plextor, Apogee, BASF, HHB, and Mitsui Gold.
Avoid common off the shelf, low quality and error prone CDs such as Memorex, TDK, Maxell, Sony, Imation and Verbatum.
2. POWER SUPPLY
Be sure that a PSC-100 or PSB-120 power supply only are being used--3rd party power supplies can cause the unit to not operate properly.
3. MALFUNCTION CD-DRIVE
Try playing a commercially produced CD (not a CD burned from the unit) using the recorder's CD Player feature. You can view the steps for playing an audio CD on page 142 of the owner's manual:
https://www.boss.info/us/support/by_product/br-900cd/owners_manuals/6a713d41-3c1b-436b-b029-6a58e57f99ef/
If that works but you are unable to burn a CD correctly, the CD drive is most likely functioning as it should but the hard drive may be fragmented (information is given below). If you can’t perform either of these operations, the BR-900CD may need service.
Due to the age of the product and the fact that parts are no longer available for the BR-900CD, our service department no longer services these. You may try contacting a local service center here:
https://www.roland.com/us/support/service_repair/service_centers/
4. COMPACT FLASH CARD FRAGMENTATION
Fragmentation can prevent devices (such as a computer or digital recorder) from operating properly. The only way to defragment the memory card is to initialize it. This erases all of its data, and returns the card to its original, non-fragmented state. The following article will guide you through formatting the hard drive:
http://www.bossus.com/support/knowledge_base/201977209
CAUTION: Initializing the card erases ALL of the data/recordings on the drive.