HP 5890 SERIES II Service Manual page 294

18. Install the replacement transformer onto the transformer bracket and secure using four screws
and four insulator bushings.
19. Position the transformer and transformer bracket to allow threading of the P10 connector cable
and power switch wiring through their applicable paths in the electronics carrier.
20. Secure the transformer and transformer bracket to the AC power supply base using three nuts
and one screw.
21. Connect wiring to power switch as shown in illustration.
22. Install the power switch in its mounting slot (be-
low the main PCB.
23. Install connector P10 in its receptacle on the
main PCB by pushing it straight in until fully
bottomed.
24. Secure the ground strap to the transformer
bracket using a screw and lock washer.
25. Install connectors J26 and J27 into their re-
spective receptacles on the AC power supply
PCB, pushing each straight down until fully bot-
tomed.
26. Install the right side
panel and secure using
two screws.
27. Install the electronics
carrier top cover.
28. Slide the rear cover on
to the instrument.
29. Secure the rear cover
to the instrument by in-
stalling and tightening
four screws.
30. Restore all gas sup-
plies.
31. Restore power to the
instrument.
32. Observe the alphanu-
meric display as the in-
strument performs an
internal self- diagnostic
integrity check. to en-
sure that the instrument
shows expected normal
displays.
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NORMAL" INTEGRITY CHECK"
OVEN
FINAL
TIME
RATE
INITIAL
TIME
OVEN
FINAL
TIME
RATE
INITIAL
TIME
OVEN
FINAL
TIME
RATE
INITIAL
TIME
OVEN
FINAL
TIME
RATE
INITIAL
TIME
SVC 11- 8
GREY
1A 1 1B
2A 2
WHITE
BLACK/YELLOW
AT POWER-ON
ACTUAL SETPOINT
Test of display elements:
all alphanumeric and LED
elements are lit.
STATUS
RUN
NOT
READY
ACTUAL SETPOINT
5890 Series II memory test
in progress.
STATUS
RUN
NOT
READY
ACTUAL SETPOINT
5890A Self-testing in
progress.
LEDs off, except possibly
STATUS " NOT READY."
RUN
NOT
READY
ACTUAL SETPOINT
Message indicating normal
termination of diagnostic
tests after power restoration.
STATUS
User setpoints remain in
RUN force.
LEDs off, except possibly
NOT
READY
" NOT READY."
BLACK
2B