Philips FM-2, Service Manual

Page: 59 / 110

Front Case Disassembly/Reassembly Procedures
Chapter 6 - Disassembly/Reassembly Guide 47
Front Case Disassembly/Reassembly Procedures
This section describes how to remove/replace items from the front case assembly.
The front case assembly includes the replaceable molded front-case, the main
PCB, the LCD assembly, the front-panel keypad and the navigation wheel.
First separate the front and rear case assemblies as described in the section
“Separation of Front and Rear Case Assemblies” on page 45.
Removing the Navigation Wheel
The wheel is a friction fit on the stem of the encoder. The encoder is attached to
the main circuit board and has a threaded moulded base just below the rotating
stem of the encoder. The threaded base accepts a 10 mm nut which fastens the
encoder assembly to the front bezel.
Step 1. From the front, remove the wheel by grasping the sides of the wheel
firmly and pulling straight back from the monitor.
If the wheel is not easily removable by hand, a small flat-headed
screwdriver may be used to gently pry off the wheel. If necessary, apply
some adhesive tape to the front cover and/or the head of the
screwdriver to prevent any damage.
Step 2. Use a 10 mm hex socket or suitable closed spanner to unscrew the
fastening nut on the outside of the front bezel.
Encoder shaft
10 mm nut