Vdb - Ricoh Neptune-P1 Service Manual

4. Troubleshooting
No. Color
LED 5 Orange

VDB

4
VDB LEDs
The VDB (Video Drive Board) controls the LPH (LED Print Head). The VDB receives the image processed
data from the IPU and sends it to the LPH.
No.
LED 100 GREEN
LED 101 YELLOW
LED 102 GREEN
LED 103 YELLOW
LED 104 GREEN
224
Image Processing 1 (while data is transferring)
Color
Timer
During image writing (RFGATE signal)
Outputting LPH 2 print data (1-bit)
Outputting ID sensor sampling
Calibrating amount of LPH light
Operation
Operation
LED Action
On
LED Action
Flashes
ON
ON
ON
ON