Service manual

1. Turn the upper key switch straight up to the Off position (0).
2. Remove the defective CPU module.
3. Insert the new processor module.
4. If the processor you are replacing is the first processor on the right
(usually in slot one), the console will make it the boot processor. If this
is the case, make sure that the console terminal baud rate is 1200, the
default baud rate of the spare.
5. Turn the lower key switch to Halt.
6. Turn the upper key switch to Enable.
7. Check the self-test display for the processor, indicated by a P on the
TYP line. See
7
in Example 3–9.
8. If the processor shows a plus sign (+) on both the STF and ETF lines,
it passed self-test.
8
9. Turn the lower key switch to Update.
10. You will see either the ?4F message or the ?2D and ?59 messages.
10
If you see mismatch messages, you may have to patch the EEPROM
using EVUCA. See Section 3.15. If you see the ?4F message, the
boot processor has been replaced and you must execute the next step;
otherwise, go to Step 12.
11. Issue the SET CPU n command so that the console is connected to a
processor that has been in the system for some time.
11
12. Get the system serial number by entering the SHOW SYSTEM SERIAL
command.
12
13. Issue the SHOW ALL command to get the customized boot parameters,
interleave characteristics, terminal setup, and any other parameters.
13
<REFERENCE>(xyp) Scalar Processor 3–45