![](/images/new-backgrounds/1223199/223199209x1.webp)
CHAPTER 2
B.Control Panel
1. Outline
The control panel contains a LCD (20 characters x 2 lines), 9 switches, and 7 LEDs.
The control panel is connected to the video controller PCB and has the functions listed below.
a.Displays status and error messages in the LCD.
b.Displays operation condition with the LED.
c.Changes Menus and values with the switches.
2. Operation
The LCD and LEDs on the control panel are controlled by the signals output from the video con- troller. The signals generated by the switches on the panel are input to the video controller.
Video controller PCB |
| DC controller PCB | Control panel |
|
IC10 |
|
|
|
|
|
|
|
| LEDs |
nFP CLK |
|
| ||
nFP CS | CPU | Switches | ||
AIR | nFP DI | |||
|
| |||
nFP OD |
|
| ||
|
|
|
| Beeper |
|
|
|
| LCD |
|
| Figure |
|
|
2 - 65