Sib, Vdb; Vdb Leds - Ricoh B286 Service Manual

Board LEDS

4.7.2 SIB, VDB

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. Color
LED 100 GREEN
LED 101 YELLOW
LED 102 GREEN
LED 103 YELLOW
LED 104 GREEN
B286/B289
Operation
Timer
During image writing (RFGATE signal)
Outputting LPH 2 print data (1-bit)
Outputting ID sensor sampling
Calibrating amount of LPH light
4-48
LED Action
Flashes
ON
ON
ON
ON
SM