Flow Of The Bd Signal - Canon imageRUNNER 7095 Service Manual

Chapter 6

6.3.1.2 Flow of the BD Signal

BD PCB
Laser driver
PCB 1
Related Service Mode:
- COPIER > ADJUST > LASER > PVE-OFST (laser projection position adjustment)
If you have replaced the image processor PCB or initialized the RAM on the image processor PCB, enter
the adjustment value.
Setting range: -300 to 300
Setting decreased Setting increased
Front
Laser A, C
Note that the laser B move in sync with the laser A.
The laser D move in sync with the laser C.
6-4
Generates the printer
When laser light
sync signal based on
is detected, '0'.
CLK-B.
J3701
1
J1319
GND Sync
2 8
BD
signal
3 7
5V
generation
4 6
J1312
J1302
J1313
J1303
VIDEO
Laser driver
PCB 2
Rear
Executes read operation based
on this sync signal.
J1406
J1317
BD
36 36
J1317 J1406
Video signal PCB
F-6-4
Memory
control
0010-8012