Parts Replacement
86
40-5648-51B
LCD and backlight
This section defines the steps for removing and replac
-
ing the LCD Display and Backlight for the Medfu
-
sion™ 3000 Series pump.
Tools Needed
For this disassembly procedure you will need:
• ¼” open end wrench
• Torque screwdriver with Phillips head & small
flat head
Always work at an electrostatic-controlled work sta-
tion
when disassembling the pump.
Removing LCD and/or backlight
assembly
1. Disconnect the pump from AC power source.
2. Open the pump housing, remove battery pack,
and separate the top and bottom halves.
3. Disconnect the display cable from the main board
at J12.
4. Use small flat blade screwdriver to loosen the 2
screws connecting the fiber optic back light to the
main board. Then pull the fiber cable assembly
from the terminal block.
5. If the back light has a 2nd fiber optic tail, cut the
wire tie anchoring its connecting cable and sepa-
rate the 2nd tail from the connecting cable.
6. With ¼” open end wrench, remove the 2 Nylock
nuts securing the display.
7. Carefully lift the display assembly from the top
housing.
8. Slide the back light and spacer from the display
assembly.
Replacing the LCD and/or
backlight assembly
1. Remove the protective plastic film from the new
display’s glass.
2. Remove the tape which holds the plastic spacer
inside the new display, and slide out the spacer.
Discard the white plastic spacer.
3. If the backlight has one fiber optic tail, then you
will use two clear plastic spacers in the next step.
If your backlight has two fiber optic tails, then you
will use only one clear plastic spacer in the next
step.
4. Place the clear plastic spacer(s) on top of the
backlight with the white side of the back light fac
-
ing up and the silver side down.
5. Gently slide the back light and spacer together into
the display with the clear plastic spacer toward the
display glass.
6. Orient the display with the back light tail on the
side with the keypad cables. Verify there is not lint
or dirt on the display.
7. Slide the display onto the ribs in the top of the
top housing and over the spacers/studs. Secure
the display assembly with the 2 Nylock nuts and
tighten with ¼” wrench.
8. Reconnect the display cable to the main board at
J12.
9. If a 2nd fiber optic tail is present on the backlight,
clip the lead on the LED of the shorter fiber optic
tail to match the length of the shorter tail’s LED
on the removed backlight. Note: the longer fiber
optic tail’s LED requires longer leads. Connect the
shorter fiber optic tail to the round connector on
the cable. Be sure to orient the lead closest to the
flat edge of the LED into the terminal touching the
MELF resistor embedded in the round connector.
After completing the next step, anchor both fiber
optic tails to the main board with a wire tie.
10. Insert the back light wires into the main board
terminal block. (When replacing the back light,
trim the LED leads to about ½” in length.] Screw
the terminal connector onto the leads with the flat
edge of the LED lens toward the outside edge of
the board. Torque terminal block screws to 32 in
oz (0.4 Nm).
Note:
If you reverse the leads during installation, the
backlight will not turn on. You may wish to loosely
reassemble the case halves, plug in the battery, and
power up pump to check the backlight.
11. Close and secure the two halves of the housing
and reinstall the battery pack.
Содержание Medfusion 3000 Series
Страница 1: ...s Medfusion 3000 Series Technical Service Manual ...
Страница 2: ...Table of Contents ii 40 5648 51B ...
Страница 20: ...Introduction 14 40 5648 51B ...
Страница 32: ...Scheduled Maintenance 26 40 5648 51B ...
Страница 80: ...Troubleshooting 74 40 5648 51B ...
Страница 116: ...Calibration Adjustment 110 40 5648 51B ...
Страница 158: ...Assembly Drawings Parts Lists 152 40 5648 51B Medfusion 3000 series main pump assembly See Note 1 ...
Страница 160: ...Assembly Drawings Parts Lists 154 40 5648 51B Case bottom assembly Medfusion 3500BC ...
Страница 162: ...Assembly Drawings Parts Lists 156 40 5648 51B Case top assembly w plunger ...
Страница 164: ...Assembly Drawings Parts Lists 158 40 5648 51B Case top assembly without plunger ...
Страница 167: ...Assembly Drawings Parts Lists 161 40 5648 51B Barrel clamp assembly GREASE SILICONE III SOLDER NO CLEAN ...
Страница 172: ...Assembly Drawings Parts Lists 166 40 5648 51B Accessories parts list Poleclamp assembly ...
Страница 182: ...Index 176 40 5648 51B ...
Страница 183: ......