Handler Interface
Function Test
(Option 202 only)
Perform this test only when troublesho oting the Option 202 handler
interface b oard.
This test veries the Option 202 handler interface functions. When
this test is performed the following LEDs WILL NOT turn ON
because the signals they represent are not used by the Option 202
handler interface board.
PHI-, PLO-, SREJ-, UNBAL-
and
ALARM-
Equipment:
Handler Simulator HP PN 04278-65001
Cable HP PN 04278-61635
Procedure:
1. Perform steps 1 through 5 describ ed \Pro cedure:".
2. Disconnect the at cable from the handler interface b oard. The
handler interface board has brown and an orange extractors and
its lo cation is shown in Figure 10-12.
3. Remove the handler interface board.
Caution
The interface board contains electronic comp onents that can be
damaged by static electricity through electrostatic discharge(ESD).
To prevent ESD damage,maintain frequent contact with any bare
sheet metal surface on the chassis. A grounding wrist strap (or
similar device) is useful for this purpose. Handle the b oard carefully
at all times. Avoid touching electronic comp onents or circuit paths.
Note
Before p erforming step 4, note the jump er settings in order to return
them to the same setting at the end of this function test.
4. Set the jump ers on the handler interface b oard the same settings
as when the b oard is shipped from the factory referring to
Figure 10-16.
10-30 Performance Tests
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