Sun Microsystems SunSwift SPARCserver 1000, Руководство по обслуживанию

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SIMMs and Jumpers B-3
B
B.1.2 Locating a Failing SIMM
When a SIMM (or NVSIMM) fails during Power On Self-Test (POST), the
SIMM slot number (J-number) and system board card cage slot number can be
learned by using the
prtdiag
command. Refer to Section 3.2, “Using
prtdiag
” for instructions.
B.2 Jumper Configuration
Note – Jumpers are factory set and should not be changed except for use with
factory diagnostic equipment and software.
Use Table B-2 and Figure B-2 to verify jumper settings are correct. Pin 1 of each
location is identified by a square solder pad.
Table B-1 SIMM Group Organization
Group Location
Group 0 J2800, J2900, J3000, J3100
Group 1 J3200, J3300, J3400, J3500
Group 2 J3600, J3700, J3800, J3900
Group 3 J4000, J4100, J4200, J4300
Table B-2 System Board Jumpers
Label Jumper Default Setting Function
J1200 Pins 2, 3 In Co12V to RS232 line driver. (Pin 1 = ground, pin 2 = line
driver input, pin 3 = +12 V supply.) Used to power the RS232 ports.
J1201 Pins 2, 3 In Connects –12V to RS232 line driver. (Pin 1 = ground, pin 2 = line driver
input, pin 3 = –12 V supply.) Used to power the RS232 ports.
J1100 Pin 1 to ground Out Holds processor A in reset so the other processor can be tested.
J1101 Pin 1 to ground Out Holds processor B in reset so the other processor can be tested.