1101/1201 Technical Manual
07/19/02 Page 5 1201 - JULY 19 '02
3. Circuit Description
3.1 HEAD
3.1.1 General Description:
The 1101 (1201) Control Head provides a convenient user interface. The twelve push-button
user controls on the face-plate provide comprehensive yet easy-to-use inputs to the 1101/1201
SPU. A sixteen position rotary switch also allows a user to have effective “hands-on” control of
the Autopilot.
The pushbuttons and rotary switch are interfaced to a microprocessor which, with the built-in
software, sends the appropriate information to the 1101/1201 SPU via either the HEAD port or
the REMOTE port on the SPU.
The 1101 (1201) Control Head receives a data clock from the SPU for clocking out the serial data
as well as clocking in serial data from the REMOTES.
Display data is received with the display clock from the SPU and is processed for display on the
LCD display on the face-plate of the Control Head. Light Emitting Diodes (LED) behind the LCD
provide backlighting.
3.1.2 Disassembly/Re-Assembly
In general it is not recommended that a dealer disassemble the Head unit. Special precautions
are taken at the factory to seal the unit.
NOTE:
IF THE 1101 or 1201 CONTROL HEAD IS DISMANTLED IT WILL NOT BE COVERED UNDER
WARRANTY.
3.1.3 Button Replacement:
If one of the buttons is sticking, gently remove it from the gasket with a knife / small screwdriver.
Remove any burrs from the outside edge of the button. Spray a small amount of SILICON
lubricant on the button and replace into the gasket. Push the button down several times to
remove any air pockets between the gasket and the button.
See Figure 1 on the following page:
To Next Page
Loading...
