SECTION IX
9 MAINTENANCE AND REPAIR
CLEANING
In general, a damp cloth is all that is needed for cleaning the Model 1140A. If using a chemical
cleaner, avoid any alcohol-based products.
When cleaning the front-panel LCD display, use a soft cloth to prevent scratching.
CAUTION
To avoid damage to the Model 1140A, take pre-
cautions to avoid static while performing any repair
procedure. Wear a grounded wrist strap and use
properly grounded tools and equipment.
REPAIR PROCEDURES
Equipment Required
The following tools may be required while performing repairs. Refer to the individual repair
procedures to determine which items will be needed for a specific situation.
• Screwdrivers
• 3/16″ slot screwdriver
• #1 Phillips screwdriver
• #2 Phillips screwdriver
• Ratchet (socket wrench)
• 6″ extension
• 3/16″ socket
• 5/16″ socket with 1/4″ or 3/8″ drive
• 3/8″ socket
• Deep 1/2″ socket
• 5/16″ hex wrench
• 5/64″ hex driver (Allen wrench)
• 3/8″ jam-nut wrench
• 27 W soldering iron, with 63/37 Sn/Pb solder
• Vise or other suitable fixture to hold the front panel firmly in place
• Drill
• 13/64″ drill bit
• RTV adhesive: Dow Corning 3145, Ectron P/N E-410017-3
• Small utility knife, craft knife, or equivalent sharp blade
9-1
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