32 Disassembly and Reassembly

WARNING

TO AVOID ELECTRICAL SHOCK, REMOVE TEST LEADS AND ANY INPUT SIGNALS BEFORE OPENING THE CASE.

CAUTION

To avoid contamination from the fingers, handle the pca by the edges or wear gloves. PCA contamination can cause failures in humid environments.

This meter contains components that can be damaged by static discharge. To avoid damaging these components when servicing the meter, take precautions indicated on the "Static Awareness" at the beginning of Section 3.

Referring to Figure 3-1 as necessary, disassemble the meter as follows. A Phillips-head screwdriver and small flat-blade screwdriver are required.

1. Remove the test leads and set the slide-switch to OFF.

2. Remove the Phillips-head screws (H1-4) from the case bottom (MP8).

3. Separate the case top (MP2) from the case bottom.

4. TO REPLACE THE BATTERY: Lift the battery from the case bottom and insert a new 9 V battery (NEDA 1604, 6F22, or 006P). Be sure the positive and negative battery posts are oriented correctly.

5. TO REMOVE THE PCA (A1): Insert a small, flat-blade screwdriver between the edge of the case top and the pca where shown in Figure Gently unsnap a side of the case top from the pca. Repeat on the other side of the pca. Unsnap the case from the top of the pca last.

6. LIFT THE PCA FROM THE CASE TOP BY ITS EDGES. If the elastomeric contact strips (J3, J4) for the switch assembly (S2) and LCD (U3) are stuck to the pca, remove them without touching the conductive edges.

TO REINSERT THE PCA: Important: First make sure that the slide-switch actuator (MP5) and slide-switch (S1) are both in the OFF position. Place the pca over the four screw posts in the case top, then press gently on the center of the pca while using the small flat-edge screwdriver to shoehorn the pca under the snap on a side of the case top. Repeat on the other side and the top.

7. TO REMOVE THE SWITCH SUPPORT (MP6): Hold the case top with the face of meter in your palm and press on the slide-switch actuator (MP5) to dislodge the switch support. Lift out the switch support.

WINDOW DECAL (MP3)

CASE TOP (MP2)

CASE TOP DECAL (MP4)

SWITCH ASSEMBLY (S2)

SIDE-SWITCH ACTUATOR (MP5)

WINDOW DECAL (MP3)

CASE TOP (MP2)

CASE TOP DECAL (MP4)

SWITCH ASSEMBLY (S2)

Assembly Kamera Samsung S630

BOTTOM SHIELD (MP9)

NON-SKID FOOT (MP11)

SIDE-SWITCH ACTUATOR (MP5)

BOTTOM SHIELD (MP9)

NON-SKID FOOT (MP11)

SWITCH SUPPORT (MP6)

9V BATTERY (BT1)

CASE BOTTOM (MP8)

4 PHILLIPS-HEAD SCREWS (H1-4)

ELASTOMERIC CONTACT STRIP, LCD (J3)

ELASTOMERIC CONTACT STRIP, SWITCH (MP9)

TOP SHIELD (MP7)

SWITCH SUPPORT (MP6)

MAIN PRINTED CIRCUIT y' ASSEMBLY (A1)

SHOCK ABSORBER (MP10)

9V BATTERY (BT1)

CASE BOTTOM (MP8)

4 PHILLIPS-HEAD SCREWS (H1-4)

ana02F.eps

Figure 3-1. Disassembled Unit

Fluke Display Repair
Figure 3-2. Removing and Reinserting the Printed Circuit Assembly

8. The LCD, switch assembly, slide-switch actuator, and elastomeric contact strips (J3, J4) for the LCD and switch assembly are accessible and can replaced as needed. Do not allow the LCD to get wet. Before installing a new LCD, make sure that all connector contact points are clean.

CAUTION

Do not touch the conductive edges of the elastomeric strips or the contacts on the switch assembly. If they are contaminated, clean them with isopropyl alcohal.

9. Reassembling the meter is the reverse of disassembling it. After the meter is reassembled, execute the PERFORMANCE TESTS to confirm that the meter is working properly.

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