Toshiba B-EX4 Maintenance Manual page 102

5. SYSTEM MODE
Expansion I/O check contents
EXP.I/O NG
Connect the cable as illustrated below, then check the high output/high input, low output/low input.
.
13
Internal serial I/F check contents
EX.232C NG
OK: Normal data
NG: Abnormal data or the loop-back jig is not connected.
Expansion I/O
R
1 2 3 4
14 15 16
Vcc
LED
OK: Normal data
NG: Abnormal data or the loop-back jig is not connected.
Internal serial I/F
R
R
R
R
R
5 6 7 8
17 18 19 20
R
R = 300 Ohms
Connector: FCN-781P024-G/P
5-20
5.3 SELF-DIAGNOSTIC TEST
9 10 11 12
21 22 23 24
GND
EO18-33027