IBM 5280 Manual page 201

L M N
444
COMMUNICATION MAP
3SLS XMIT/RECV CHECK
PAGE 5 OF 20
024
- Disconnect the external
cable from the machine at
connector J140.
- At the P140 connectQr ON THE
EXTERNAL
check
continuity between P140-l3
'+
Xmit Nonsw Data' (MIM
865~
probe point F), and the
red lead AT THE 4 PIN PLUG.
- At the Pl40 connector ON THE
EXTERNAL CABLE check
continuity between P140-l4
Xmit Nonsw Data' (MIM
S65~
probe point
F)
and the
green lead AT THE 4 PIN
PLUG.
Is continuity good?
Y N
025
- Defective external cable.
026
- Defective internal cable.
027
- Defective communications MPU
card (A-E5)(MIM 811).
- If a 'Ros Patch' cable is
connected to the card,
GO TO MAP 0600, ENTRY POINT A.
028
- Defective communications MPU
card (A-E5)(MIM 811).
- If a 'Ros Patch' cable is
connected to the card,
GO TO MAP 0600, ENTRY POINT A.
C H
2 3
MAP 3011-5
029
- The test is complete.
- Return to the
MDIs~
answer
'Y', and follow the prompts.
u~u
(ENTRY POINT D)
THIS IS THE RECEIVE LEVEL CHECK
PROCEDURE FOR A SWITCHED NETWORK.
- Set the dB meter to the bridge
position.
Is the World Trade line plate
being used?
Y N
I
EC840S74 PECS397S7
9 6
P
Q
MAP 3011-5