Service manual

PN 4237242C

4.10-1

SERVICE AND REPAIR PROCEDURES

MEMBRANE KEYPAD AND DISPLAY

4.10 MEMBRANE KEYPAD AND DISPLAY

Tools/Supplies Needed

B #2 Phillips-head screwdriver

B 1/4 in. nut driver

Removal

1. Turn OFF the instrument’s power.

2. Remove the top cover as directed under Heading 4.3.

3. Disconnect the following cables (Figure 4.10-1):

a. The display cable (ribbon) from J4 on the URA card.

b. The keypad cable (flex) from J5 on the URA card.

c. The keypad flex cable shield ground from its connection post on the chassis.

4. Remove the eight, #2 Phillips-head screws that fasten the keypad/display assembly to the

chassis (Figure 4.10-1).

Figure 4.10-1 Membrane Keypad and Display

5. Remove the keypad/display assembly from the chassis, being careful not to snag one of

the connectors as you pull the cables through the chassis opening (Figure 4.10-1).

URA

CARD

PHILLIPS-

HEAD

SCREW

(8)

KEYPAD

CABLE

DISPLAY

CABLE

7242038A

DISPLAY

FLEX CABLE

SHIELD

GROUND