Canon LBP 2460 Service Manual - Page 104

CHAPTER 2 6. Face-down delivery stationary jam The CPU detects a face-down delivery stationary jam has occurred if the paper has not passed through the face-down tray delivery sensor (PS1402) within the prescribed time after the VERTICAL SYNC signal (/VSYNC) has been received. (Unit: Seconds) (Unit: Seconds) PRINT PRINT Vertical sync signal (/VSYNC) Jam check T2 Face-down tray delivery sensor (PS1402) Main motor T2 : 7.3 seconds (A4), 9.4 seconds (Ledger) Normal T2 Abnormal Figure 2-5-17 7. Initial residual jam a. Turn the power ON, in the event that the fixing delivery paper sensor (PS1403) detects the presence of paper, the CPU assesses an initial residual jam. b. If the CPU has not received an automatic delivery command to automatically deliver paper from the printer within 3 minutes, it assesses an initial residual jam. c The CPU detects that an initial residual jam has occurred if one of the following sensors detects the presence of paper even after the printer has performed an automatic delivery of the relevant paper. After the power switch is turned ON and the fixing roller has reached its prescribed temperature (150°C), or the printer outputs the paper automatically. • Registration paper sensor (PS1) • Pick-up unit paper sensor (PS2) • Fixing unit delivery sensor (PS1403) • Face-down tray delivery sensor (PS1402) 2 - 58