COPYRIGHT © 1999 CANON INC. CANON ADF FOR iR600 REV.0 JAN. 1999 PRINTED IN JAPAN (IMPRIME AU JAPON) 5-73CHAPTER 5 TROUBLESHOOTINGV . SELF DIAGNOSISA. OutlineThe microprocessor on the machine's ADF controller is equipped with a function to check the condi-tion of the machine. It runs a check as needed and, upon detection of an error, will communicate the factto the copier in the form of a code.The nature of communication may be one of three types, which may be checked with reference to thestate of LED2 on the ADF controller PCB.ErrorAlarmJamErrorIndicatorFlashing at intervals of 240 msecFlashing at intervals of 160 msecFlashing at intervals of 80 msecState of LED2X X X X(A) (—) Not usedX X(J) (—)X X(E) (—)Display I/O Adjust Option Test CounterFunctionOK< JAM > < 1/25 > < READY >AAA BBBB CCCC DDDD E FFff G HHHHHH IIIIIAAA BBBB CCCC DDDD E FFff G HHHHHH IIIIIAAA BBBB CCCC DDDD E FFff G HHHHHH IIIIIAAA BBBB CCCC DDDD E FFff G HHHHHH IIIIIAAA BBBB CCCC DDDD E FFff G HHHHHH IIIIIAAA BBBB CCCC DDDD E FFff G HHHHHH IIIIIAAA BBBB CCCC DDDD E FFff G HHHHHH IIIIIAAA BBBB CCCC DDDD E FFff G HHHHHH IIIII+/-Jam code'1' indicates a jamin the machine.Figure 5-501Alarms and jams may be checked as necessary using the copier's service mode. In the event of anerror, the copier's display will show the appropriate error code.Table 5-501