Toshiba B-850 Owner's Manual page 102

APPENDIX 4 SYSTEM MODE
A4.7.1 Self-Diagnostic Test Result Sample and Descriptions (Cont.)
(10) Expansion I/O Interface Check
NOTE:
Fot this check a loopback jig is required. For the loopback jig, please contact your nearest TOSHIBA TEC
service representative.
(11) DIN Connector for the Keyboard (KB-80) Check
NOTE:
Fot this check a loopback jig is required. For the loopback jig, please contact your nearest TOSHIBA TEC
service representative.
EXP.I/O OK
Loopback test
OK: The circuit has no problem.
NG: The circuit has a problem or loopback jig is not attached.
Expansion I/O PC board
OK
KEY BRD
OK: The connector has no problem.
NG: The connector has a problem or loopback jig is not attached.
Expansion I/O PC board
A4-26
EO1-33029
A4.7 Additional Information