Pioneer CD-ROM Drive DR-UO6S User Manual
Page 4
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INSTALLATION
SETTING THE SCSI ID
SCSI devices are identified by a SCSI ID number from 0 through 7 with ID number 7 typically reserved for
the SCSI interface card. The basic rule for assigning a SCSI ID number requires that: Each SCSI device
have a unique ID number (address) on the SCSI bus. If fvvo SCSI devices are assigned the same ID
number, your computer will not operate properly.
Assigning a SCSI ID to the Drive if you have a PC:
To avoid conflicts with an existing SCSI device and the intertace cara, cnoose an unassioned numoer in
the range of 0-6.
Tip:
Make list of your SCSI devices and their assigned ID numbers to avoid a SCSI ID conflict.
Assigning a SCSI ID to the Drive:
' The three SCSI ID setting switches 0, 1, and 2 {#1, #2 and #3) compose a digital switch. Please
execute setting according to the following table.
The jumper is ON when a short-circuit socket is inserted to short-circuit the upper and lower pin, and it
is OFF in open condition.
*lf the personal computer fias no other built-in SCSI equipment except this unit, please use the unit
with the factory setting (ID No. 2).
DISABLE EJECT
RESERVED
2048/512^ pTERMINATION (SHORT - OFF)
RESERVED
SCSI ID
2 1 0
Switch #
8
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
П
8
7
6
5
4
3
2
1
Setting switch
SeSMD
0
1
2*
3
4
5
6
7
O(LSB) (#1)
OFF
ON
OFF
ON
OFF
ON
OFF
ON
1 (#2)
OFF
OFF
ON
ON
OFF
OFF
ON
ON
2 [MSB) (#3)
OFF
OFF
OFF
OFF
ON
ON
ON
ON
OFF (open) ON (short-circuited) ^ The factory setting is for ID No. 2.
A
WARNING
DO NOT assign SCSI ID number 7 which is normally reserved for the SCSI interface.
12
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INSTALLATION
SCSI TERMINATION
SCSI termination is a technique used to absorb line reflections at the beginning and end of a SCSI daisy
chain that would otherwise interfere with legitimate SCSI signals and cause errors. To minimize interference
with data transfer, SCSI termination is absolutely required for proper operation of your Drive.
WHEN TERMINATION IS REQUIRED
If you are installing the Drive as the on/y SCSI device or as the last SCSI device in the chain, termination
must be enabled.
A built-in terminator switch is located on the rear panel. Function Switch ff5 is used to enable or disable
termination as described on page 14.
2048/512-,
DISABLE EJECT
RESERVED
pTERMINATION (SHORT - OFF)
RESERVED
I
SCSI ID
2 1 0
Switch #
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
□
8
7
6
5
4
3
2
1
As you can see in the above illustrations, whether you have an ON/OFF Terminator Switch or a Terminatici
Function Switch, your Drive has an
ON/OFF termination
option.
ON;
The Terminator Switch must be open when the drive is:
♦
the only SCS\ device connected to an interface card; and/or
♦
the last physical device in a daisy-chain.
OFF;
The Terminator Switch must be short-circuited when the drive is
♦ connected in the middle of a SCSI chain.
SETTING FIIMOTION SWITCHES
Function Switches, also known as Jumper Switches, control the operational functions of the CD-ROM
Drive.
The jumper is ON when a short-circuit socket is inserted to short-circuit the upper and lower pin, and it is
OFF in open condition.
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