Canon imageRUNNER ADVANCE C2020, Service Handbook

Page: 179 / 292

SERVICE MODE
S-37
COPIER>I/O
• System Controller PCB (2/2)
Address Bit Notation Description Remarks
P005 7 - -
6 - -
5 - -
4 - -
3 - VGA LED ON/OFF signal
2 - Reset signal for 1/4 VGA
1 - Serial communication (reception) for VGA
0 - Serial communication for VGA (transmission)
P006 7 - -
6 - PDL interrupt
5 - DPRAM interrupt (R-CON)
4 - Registration ON check and interrupt by bi-Centronics
3 - Bi-Centronics communication
2 - Bi-Centronics communication
1 - FROM_BUSY signal
0 - -
P007 7 - 200Hz clock output
6 - S-CON address strobe
5 - S-CON read
4 - S-CON high light
3 - S-CON low light
2 - S-CON wait
1 - PDL slave power ready
0 - PDL master power ready
P008 7 - -
6 - -
5 - -
4 - Flash memory for S-CON SC signal
3 - Flash memory for S-CON CS signal
2 - DRAM for S-CON
1 - VGA connected 1: Connected
0 - DRAM for S-CON
P009 to P010 - -
F00-304-01 (2/2)