Service manual

6-1
SECTION 6: DISASSEMBLY GUIDE
6.1 Introduction
6.2 Prior to Disassembly
6.3 Fuse Replacement
6.4 Monitor Disassembly
6.5 Monitor Reassembly
6.6 Battery Replacement
6.7 Power Entry Module (PEM) Removal/Installation
6.8 Power Supply Removal/Installation
6.9 Display PCB Removal/Installation
6.10 UIF PCB Removal/Installation
6.11 Alarm Speaker Removal/Installation
6.1 INTRODUCTION
The NPB-190 can be disassembled down to all major component parts,
including:
• PCBs
• Battery
• Top and Bottom Housing
• Speaker
• Power Entry Module (PEM)
The following tools are required:
• Phillips-head screwdriver #1
• 10 mm open-end wrench
• Needle-nose pliers
• Torque wrench, 10 inch-pounds (1.13 newton-meters)
• Wire Cutters
WARNING: Before attempting to open or disassemble the NPB-190,
disconnect the power cord from the NPB-190.
Caution: Observe ESD (electrostatic discharge) precautions when working
within the unit.
Note: Some spare parts have a business reply card attached. When you receive
these spare parts, please fill out and return the card.
6.2 PRIOR TO DISASSEMBLY
1. Turn the NPB-190 off by pressing the Power On/Standby button.
2. Disconnect the monitor from the AC power source.