C-18
Ultra 1 Creator Series Service Manual • August 1996
FIGURE C-3
Identifying Jumper Pins
C.5.1
Serial Port Jumpers
Serial port jumpers J2104 and J2105 can be set to either RS-423 or RS-232 serial
interface. The jumpers are preset for RS-423. RS-232 is required for digital
telecommunication within the European Community.
TABLE C-6
identifies serial port
jumper settings. If the system is being connected to a public X.25 network, the serial
port mode jumper setting may need to change from RS-423 to RS-232 mode.
To change the serial port mode jumper setting:
1. Power-off the system
2. Remove the unit cover
Caution –
Use proper ESD grounding techniques when handling components. Wear
an antistatic wriststrap and use an ESD-protected mat. Store ESD-sensitive
components in antistatic bags before placing it on any surface.
3. Attach the wrist strap.
4. Locate the jumpers on the system board and change the selection of jumpers J2104
and J2105 to position B.
5. Detach the wrist strap.
6. Replace the unit cover.
7. Power-on the system.
TABLE C-6
Serial Port Jumper Settings
Jumper
Pins 1 + 2 Select
Pins 2 + 3 Select
Default Jumper on Pins
J2104
RS-232
RS-423
2 + 3
J2105
RS-232
RS-423
2 + 3
Pins
Part number
J 2 X X X
*
*
*
*
*
*
!
Summary of Contents for Ultra 1 Series
Page 8: ...viii Ultra 1 Creator Series Service Manual August 1996...
Page 21: ...Preface xxi Email smcc docs sun com Fax SMCC Document Feedback 1 415 786 6443...
Page 22: ...xxii Ultra 1 Creator Series Service Manual August 1996...
Page 34: ...2 4 Ultra 1 Creator Series Service Manual August 1996...
Page 70: ...6 4 Ultra 1 Creator Series Service Manual August 1996...
Page 110: ...8 36 Ultra 1 Creator Series Service Manual August 1996...
Page 126: ...9 16 Ultra 1 Creator Series Service Manual August 1996...
Page 158: ...10 32 Ultra 1 Creator Series Service Manual August 1996...
Page 164: ...A 4 Ultra 1 Creator Series Service Manual August 1996...
Page 186: ...B 22 Ultra 1 Creator Series Service Manual August 1996...
Page 208: ...C 22 Ultra 1 Creator Series Service Manual August 1996...
Page 212: ...Glossary 4 Ultra 1 Creator Series Service Manual August 1996...