Vitalcare 506DN3, Service Manual

Page: 137 / 254

Criticare Systems, Inc. VitalCare
TM
506N3 Series Service Manual Page 7-25
Section 7 —Disassembly
5. Unlock the membrane tail at J11 and remove the tail from the
connector.
6. Remove the assembly from the bezel.
7. Flip the PCB over. Using a #0 Phillips screwdriver, remove all
four (4) screws (pn 41258B003) from the LCD display. Lift and
remove.
8. Using a #1 Phillips screwdriver, remove the six (6) screws
(pn 40995B005) from the display board (pn 91388A001). Lift
and remove. There will be a display board header beneath the
display board.
9. Using a 1/4 nut driver, remove the slide collar that is over the
DB-9 connector. A #1 Phillips screwdriver may be needed to
hold the screw on the other side.
10.Using a 3/16 nut driver, remove the standoffs and nuts that are
attached to the Main Board.
11.Replace the Main Board.
REASSEMBLY
1. Mount four (4) standoffs M/F (pn 42255B003) onto the Main
Board (PCB side without connectors) using four (4) nuts
(pn 40008B005).
2. Install LCD Display Assembly (pn 90029A001) to the Main
Board assembly using four (4) #2 screws (pn 41258B003).
Torque to 2 in. lbs.
3. Plug display board header (pn 87282B001) into Main Board at
J1 or J7 .
4. Carefully place and align the LED display board assembly
(pn 91388A001) onto the main board using the standoffs as a
guide and make sure header is connected into display board.
5. Mount the LED display board using six (6) P.H.M.S. screws
(pn 40995B005). Torque to 5 in. lbs.
6. Slide collar over the DB-9 connector and mount this to the Main
Board using two (2) P.N.M.S. screws (pn 40995B006) and
securing with two (2) nuts (pn 40284B001).
NOTE : Nuts will lie on top of collar plastic. Torque to 5 in. lbs.
7. Air out the bezel with an air ionizer before mounting PCB. Place
the ground tail from the membrane through the opening of the
Main Board assembly (pn 90232A001).