Replacing Or Refitting The Front Panel Subassemblies; How To Fit Pc Boards Into Plastic Support Clips; Points To Observe When Refitting Or Replacing Front Panel Subassemblies - HP 8114A Service Manual

Replacing or Refitting the Front Panel Subassemblies

How to Fit PC Boards into Plastic Support Clips

Caution

Points to Observe when Refitting or Replacing Front Panel Subassemblies

4-26 Disassembly and Reassembly
In general, this is the reverse of removing, but where replacing or
refitting differs in any way, it is noted in this section
1. Locate one side of the PC board in its support clips
2. Press one end of the board steadily down on its clips while moving
the clips back from the board just enough to allow the board to
'click' into position
3. Repeat step 2 for the other side, and the remaining end of the
board
Do not use excessive pressure on PC board support clips, as they may
be damaged.
1. Display module
a. If you are replacing the Display module, remove the protective
film from the display
b. Using a dry, clean cloth, gently clean the surface of the display
2. RPG Head unit
a. Fold the Ribbon cable in a concertina above the unit to use up
the extra length, before fitting the RPG module. Allow just
sufficient cable showing at the top of the unit to connect tidily
with 53 on the RPG module, which then fits over the Head unit,
holding the folded cable in position
b. Secure the unit to the Front Panel frame using the 12mm nut
and washer. Take care not to over-tighten the 12mm nut, as the
mounting bush may be damaged
c. Press the knob firmly onto the spindle, making sure that the flat
on the spindle is aligned with the corresponding flat inside the
knob
d. Rotate the knob to check that it runs smoothly
3. RPG module
a. Ensure that the LEDs are correctly positioned above their
apertures. If not, move slightly
suitable tool until the positioning is correct
4. Large and small Key pads
a. If you are replacing one or both Key pads, you will see that the
rubber key pad kit, p/n 08110-41901 contains both keypads,
attached together as one piece. Separate the small pad from the
large one by gently tearing the two sections apart
b. When you have finished fitting the Key pads, press each of the
pads in turn to
check
with
a screwdriver or other
that they operate freely