NYR = Repair Code: Step-by-step instructions for disassembly, cleaning, inspection, repair, routine maintenance, and mandatory configuration upgrades.
PC = Parts Catalog: Detailed listing of parts including part number, drawing number, item description, and parts replacement schedule.
TG = Technical Guide: Listing of the key features and benefits of the product along with available options and modifications.
IP = Instruction Pamphlet: End user instructions for installation, operation, and troubleshooting. May include detailed installation information not already covered by an installation drawing.
NYS = Service Instruction: Step-by step Instructions for disassembly, cleaning, inspection, performing conversions, upgrades, and reconditioning.
CW = Component Write-Up: Detailed description of the product, it's purpose, and how it operates.
GL = General Letter: Notifies customers of important information regarding products; such as change in hardware or operating procedures in the field.
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