NEC POWERMATE PRO2180 - SERVICE 1996, Руководство по обслуживанию

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Quad-Speed CD-ROM Reader Specifications and Jumper Settings D-3
Figure Appendix D -1 CD-ROM Connector and Jumper Locations
To the left of the standard 40-pin IDE connector on the back of the CD-ROM reader are
two 6-pin jumper blocks (jumper A and jumper B). The block to the extreme left (jumper
A) is factory set with the pins unshorted (see Table Appendix D -2).
Table Appendix D -2 Jumper A Settings
Pin Setting Signal
1 Disabled (unshorted) –
2 Disabled (unshorted) Factory use only
3 Disabled (unshorted) Factory use only
The jumper block immediately adjacent to the IDE connector (jumper B) sets the following
functions using pin 1 - pin 3 as read from left to right: CSEL, SL, and MA (see Table
Appendix D -3). The following is a summary of the jumper settings:
n
CSEL. (cable select) — enables/disables the cable select feature. Factory set at
disabled (pin not jumpered).
n
SL (slave) — enables/disables the slave feature. Factory set at disabled (pin not
jumpered)
n
MA (master) — enables/disables the master feature. Factory set at enabled (pin
jumpered)
IDE Connector Power Connector
Jumper B
(Cable Select/Master/Slave)
Audio Connector
Jumper A