IBM 5110 Series Maintenance Analysis Procedures page 213

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026
BSC Network and BSCA
Intermittent Problem MAP
PAGE 3 OF 5
Is it an IBM external modem?
Y N
027
Go to Page 1, Step 009, Entry Point F.
028
- Use the modem maintenance information to
run the modem diagnostic tests.
Do the modem tests run OK?
Y N
029
Repair the modem using the maintenance
information provided with the modem.
030
Go to Page 1, Step 009, Entry Point F.
031
(Entry Point C)
- Use MAP 0831 to check the transmit and
receive levels.
Are the transmit and receive levels OK?
Y N
032
Use MAP 0831 to fix the problem.
033
Is the
10~1
station using a CBS (Auto
Answer) type coupler?
Y N
034
Is the local station using a COT type
coupler?
Y N
H J K
H
J
K
MAP 0835-3
035
- Use MAP 836,837 and 838 to test the
World Trade
II~e
plate.
Does the line plate test OK?
V N
036
Use MAP 836,837 and 838 to fix the
problem.
037
Go to Step 043, Entry Point B.
038
- Use MAP 0833 to test the COT type coupler.
Does the COT type coupler test OK?
Y N
039
Use MAP 0833 to fix the problem.
040
Go to Step 043, Entry Point B.
041
- Use MAP 0832 to test the CBS type coupler.
Does the CBS type coupler test OK?
Y N
042
Use MAP 0832 to correct the problem.
043
(Entry Point B)
- Prepare the 5110 to run the SSC On Line/RFT
tests. See the SSC MIM for instructions.
Does the BSC On Line/RFT test run OK?
Y N
5 4
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01JAN79
EC 836600 PEC 835541
MAP 0835-3