To avoid electrical shock, do not open the cabinet. Refer servicing to qualified personnel only. Caution: As the laser beam in this CDU924S is harmful to the eyes, do not attempt to disassemble the cabinet. Refer servicing to qualified personnel only.
Contents Introduction Example of System Setup Location and Function of Parts and Controls Front Panel ...8 Rear Panel ...9 Precautions Installing the Drive Unit into the Computer Getting Started...11 Setting the Jumpers...11 Opening the Computer ...13 Mounting the Drive ...14 Connecting the Drive...15 Mounting a Host Adapter...18 Reassembling the Computer...19...
Introduction The CDU924S is a drive unit for CD-R discs, which store a maximum of 650 Mbytes of digital data. The drive unit has the following features: Reads and writes data in both CD-ROM and CD-ROM XA standard formats. Reads and writes data in CD-BRIDGE format which includes PHOTO-CD.
Location and Function of Parts and Controls Front Panel CD Caddy Caddy insertion slot Accepts a caddy loaded with a CD-ROM or CD-R disc. Eject button Ejects the caddy from the drive unit. Emergency eject hole Insert a fine rod into this hole to eject a caddy manually in emergencies. Busy indicator This indicator shows the unit’s status in various phases of operation.
Precautions Installation Avoid placing the drive in a location subject to: – high humidity – high temperature – excessive dust – mechanical vibration – direct sunlight. Use the drive in a horizontal position. Do not use it in a vertical or tilted position.
Remove the jumper to set to OFF, and install the jumper to set to ON. The recommended jumper is AMP* Shunts (14227-1), JAE** Short Socket (PS-2SH4-1) or equivalent. The following table shows the function of each jumper. Jumper Function DEVICE The setting of this jumper determines whether the TYPE SCSI device type code in the inquiry data is WO...
Mounting the Drive Remove the screws and brackets from both sides of the drive spaces. If mounting rails are necessary, attach them to the drive unit in the same way as the ones on your floppy disk drive and slide the drive unit into the bottom half-height space.
Frame ground When normally installed, the drive unit is not in contact with the host computer directly and should be grounded. Connect the frame ground tab to one of the host computer’s ground cables. Frame ground tab The frame ground cable recommended has a AMP 1-480435-0 housing and 170203-2 or 60711-1 contacts.
If you connect external SCSI device(s), you must remove a host adapter’s terminator resistors. Computer Floppy disk drive ID No. 7 CDU924S Host adapter Attach the terminator to the last unit in the system. Installing the Drive Unit into the Computer Reassembling the Computer Remove the host adapter's terminator.
MSCDEX and the device driver for an ordinary CD-ROM drive can be used when using the CDU924S as a SCSI CD-ROM drive. Use the device driver for a CD-R drive when using the CDU924S as a recordable drive. Be sure to install the device driver before operating the drive. Refer to the manual supplied with the host adapter for instructions.
Close the lid firmly. Important: Do not drop the disc or the caddy. The caddy is designed so that its shutter automatically opens when it is inserted into the drive unit. Do not open the shutter manually and touch the disc. Data cannot be recorded if the recording surface is contaminated.
Operating the Drive Make sure that the application software is installed in the host computer before using the drive. Starting Up Turn on the power supply. Insert the caddy into the drive slot with the disc’s label facing up, and push it partially into the drive until the automatic loading mechanism pulls the caddy in.
Ejecting a caddy manually in an emergency In the event of electrical or mechanical failure of the drive unit, a manual emergency eject is provided to allow removal of the caddy from the drive unit. Turn off the power of your computer. Insert a pointed object, such as a paper clip, into the emergency eject hole, and push with hand.
Drive performance Data transfer rate Sustained rate (Mode 1): 150 kbytes/s (normal) 300 kbytes/s (double) 600 kbytes/s (quadruple) SCSI Interface Burst rate: 2.5 Mbytes/s 4.0 Mbytes/s (synchronous) Access time Full stroke: 450 ms (typical/normal) 420 ms (typical/double) 400 ms (typical/quadruple) Average: 360 ms (typical/normal) 300 ms (typical/double)
Supplied accessory User’s Guide (1 each) Disc Caddy OPA-2000 (1 each) Optional accessories CD ROM discs: YHDS-50 “CD-ROM Test Disc Type 1.3” (equivalent to YHDS-4) YHDS-100 “CD-ROM Test Disc Type 2.0” (audio-combined) Additional caddies: OPA-2000 OPA-1011/2 Crystal frequency 22.5792 MHz 24.0000 MHz 33.8688 MHz Design and specifications are subject to change without notice.