Lcd And Microcomputer Pcb Disassembly And Assembly - Fluke 8060A Instruction Manual

5-8. LCD and Microcomputer PCB Disassembly and
Assembly
This procedure applies to serial number 3995000 and higher.
The procedure for disassembling or assembling the LCD and the
microcomputer pcb is not difficult, but the steps must be followed in
sequence. Before you try the procedure, examine the components in Figure
5-2 and familiarize yourself with the following handling precautions:
The microcomputer, U5 (item 4 in Figure 5-2), is a static sensitive
CMOS device. Follow the standard procedures for handling static
sensitive devices.
The LCD interconnect (item 7) and the microcomputer interconnect
(item 5) should not be touched with fingers or contaminated. Handle
these items with tweezers and keep them clean.
The microcomputer interconnect (item 5) is susceptible to corrosion
caused by the reaction between the metal in the connector and possible
contaminates in the air such as smoke or sulfur. Store the connector in
an air-tight container if the LCD is disassembled for a long period of
time.
Do not get fingerprints or dirt on the LCD display, the display lens, or
the gasket.
While the LCD and microcomputer pcb are assembled, take care not to
press down on the display lens because pressure could damage the LCD.
Service Information
Note
Maintenance
5
5-9