HP C2021A, 5n C3952A, 5 C3916A, 5m C3917A, 4 plus C2037A manual PS1 Input/Registration Sensor Check

PS1 (Input/Registration Sensor) Check

1 Power ON the printer with the top cover open. Wait for the 12 PRINTER OPEN (or CLOSE PRINTER COVER) message.

2 Engage PS1 by taping it down.

a For the LaserJet 5, install the toner cartridge.

3 Close the top cover. The 02 WARMING UP message should display.

4 After the fuser warms up, the main motor should turn on.

5 The 13 PAPER JAM message appears if the sensor is working correctly.

6 If the 13 PAPER JAM message does not appear, check that PS1 was fully engaged, then replace PS1.

7 Remove the tape from PS1, install the Toner Cartridge and close the top cover.

8 The display should change from 02 WARMING UP to 00 READY. If the 13 PAPER JAM message persists, replace PS1.

Figure 7-4 PS1 Input/Registration Sensor

7-22 Troubleshooting