Canon CLC 1120 Service Manual page 758

Address bit
P021 15 not used
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1 LD-J2DCON
0 power switch off signal
P022 15-0 not used
P023 15-0 not used
P024 15-0 not used
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P026 15-0 not used
P027 15-0 not used
P028 15-0 not used
COPYRIGHT © 1999 CANON INC.
Description
CANON CLC1120/1130/1150 REV.0 MAR. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON)
CHAPTER 13 TROUBLESHOOTING
Remarks
1: download mode
1: OFF
I/O>DC-CON
13-231