Service manual

5-1
Removal and Replacement
4Introduction
This chapter contains procedures for removing and replacing these cardiograph
subassemblies:
• battery
• keyboard and the keyboard display assembly
• top cover assembly
• printer drive assembly
• printhead assembly
• CPU assembly
• power supply assembly
• internal cabling
• #A05 storage and transmission assembly
The way in which wires and cables are routed and dressed inside the main chassis plays an
important part in reducing electromagnetic and radio frequency interference emitted by
the cardiograph. When you disassemble any part of the cardiograph, pay special attention
to the way cables and wires are routed and dressed. When you reassemble the cardiograph,
be sure to route and dress all cables and wires as they were originally.
Tool Requirements
These are the tools you need to remove and replace the cardiograph’s subassemblies:
• 7-mm or 9/32-inch wrench
• 7/32-inch wrench
• 2 flat-bladed screwdrivers
• #0 Phillips screwdriver
• T-10 Torx drivers (or Torx driver kit, HP part number 5181-1933)
• Long-nose pliers (recommended, but not necessary)
• IC Extraction Tool (AMP 821591-1 size 44)
NOTE