Calibrating The Lcd; Leds On The Ec Pcb - Panasonic DP-C405 Service Handbook

2.14. Calibrating the LCD

1. Turn the Main Power Switch on the Back of the machine to the OFF position, and leave the Power
Switch on the Left Side of the machine in the ON ( I ) position.
2. Ensure that the SD Memory Card with Firmware Update is not installed in the machine. If the Card is
installed in the machine, remove it.
3. Press and hold the "Energy Saver ", and "Copy" keys down simultaneously, then turn the Main
Power Switch on the Back of the machine to the ON position, and continue holding the keys for
approximately 30 seconds until the Display becomes stable.
The LCD Display starts blinking, and shows a "+" on the upper left edge of the display.
Note:
If you do not hold the "Energy Saver", and "Copy" keys down long enough, the Display may go
OFF.
4. Press the "+" on the upper left edge of the display, press the "+" on the center, and press the "+" on
the lower right edge of the display. Then the display goes to standby.
Caution:
Prevent any damage to the LCD Display by not pressing with Sharp Edged Objects such as a Ball
Point Pen, etc.
5. Reboot the machine by cycling the power. Turn the Main Power Switch on the Back of the machine to
the OFF then back to the ON position.

2.15. LEDs on the EC PCB

The LEDs are mounted on the EC PCB, which are working properly. The LEDs, and the signal names are
listed below.
LED 1 : +5V
LED 2 : +24VM (Voltage for Interlock and Motor drive)
LED 3 : +24VF (Voltage for Fan)
LED 5 : +5Vp (5V pilot)
Note:
1. LED 1 to 3 will be Off when machine is in Sleep mode.
2. The LED numbers are printed near the IPC PCB connector. (Order from left side)
Ver. 1.1
98
DP-C405/C305/C265
FEB 2008