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IBM 4247

IBM 4247
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T&D08 - Microcode Test
Display:
T&D 08 USER
If an error message is displayed, go to “T&D Error Messages and Actions” on page 190. The test completed
successfully if the display advances to the next test number.
T&D09 - Serial Attachment Test
The serial loop-back connector needs to be installed for this test. There are 2 serial, loop-back connectors. The
RS-232 connector is installed first. When prompted by the display, remove the RS-232 connector, and install the
RS-422 loop-back connector.
If a loop-back connector is not installed, an error message will be displayed. To bypass this message, press the
Micro key twice to advance to the next test.
Display:
T&D 09 USER
INSERT 422 LOOP
1. Remove the RS-232 connector, install the RS-422 connector, and press the Micro key.
2. If an error message is displayed, go to “T&D Error Messages and Actions” on page 190.
3. The test completed successfully if the display advances to the next test number.
T&D10 - Stacker/ASF Test
Note: The stacker/ASF loop-back connector needs to be installed for this test. This connector tests the stacker
and ASF circuits.
Chapter 2. Diagnostics 167

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