1-3. PARTS WHICH MUST NOT BE TOUCHED
(1) Red painted Screws
Purpose of Application of Red Paint
Red painted screws show that the assembly or unit secured can only be adjusted or set at
the factory and shall not be readjusted, set, or removed in the field.
If it becomes unavoidably necessary to disassemble any of these assemblies and units,
disassembly may be done provided that the conditions permitting reassembly are met.
Note also that when two or more screws are used on the part in question, only one repre-
sentative screw may be marked with red paint.
(2) Variable Resistors on Board
Do not turn the variable resistors on boards for which no adjusting instructions are given in
“ADJUSTMENT.”
(3) Other Screws
Although not marked with red paint, the following screws must not be loosened or read-
justed.
4011D003AA
8screwsonthePHUnitCover
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