Canon iR105 Service Manual page 650

HD-CHECK
Use it to check and recover the partition selected using CHK-TYPE.
<Using the Mode>
1) Select the item.
2) Press the OK key.
3) See the result.
HD-CLEAR
Use it to initialize the partition selected using CHK-TYPE.
<Using the Mode>
1) Select the item.
2) Press the OK key.
3) At the end, see that 'OK' is indicated.
COPYRIGHT© 2001 CANON INC.
OK/NG (hardware)/NG (software) recovery sector/alternative sector
CHK-TYPE: 0 and 4 are invalid
2000 2000 2000 2000
COPIER>FUNCTION>SYSTEM
CANON iR105 REV.0 JULY 2001
SERVICE MODE
S-89