Vdb, Sif - Ricoh D093 Service Manual

7.6.4 VDB, SIF

VDB
The VDB (Video Drive Board) controls the LPH (LED Print Head). The VDB receives the image
processed data from the SIPU and sends it to the LPH.
The following LEDs indicate the status of elements operation on the VDB<0}
LED Color
LED100 GREEN
LED101 GREEN
LED102 GREEN
LED103 GREEN
LED104 GREEN
LED105 GREEN
LED106 GREEN
SM
LED Definition
FPGA operation
PCLK Input Check
Internal GATE signal
check
LSYNC signal check
FPGA Net Ver.
FPGA Net Ver.
FPGA Net Ver.
7-75
Board LEDS, DIP Switches
LED State
Normal: FLASH
Input from SIPU: FLASH. Else:
OFF
Signal assert: FLASH
Else: OFF
Input from SIPU: FLASH. Else:
OFF
Distinguishing No. Bit 3:
1: ON
0: OFF
Distinguishing No. Bit 2:
1: ON
0: OFF
Distinguishing No. Bit 1:
1: ON
D093/D094