HP 750 - Manual (Page 133)

Troubleshooting C4705-90000 8-15
Error Code Corrective Actions Problem Description
070010 False drops detected during
power on.
D Check for noise on the line voltage.
D Perform the drop detect calibration '
page 7Ć4.
D Causes also include:
D A noisy power supply
D A bad drop detect sensor
D An acoustically noisy environment
D The main PCA.
070020 One of the Drop Detection
errors has occurred Ć or,
during the Drop Detection no
drop was detected.
Pen checking is set to OFF.
D Perform the drop detect calibration '
page 7Ć4.
D Troubleshoot the cartridges and the
drop detector.
D If required, replace the service station '
page 6Ć42.
D Check the cable assembly and the main
PCA.
070030 The drop detect status signal
indicates a bad drop detector.
D Perform the drop detector/open sensor
test ' page 8Ć37.
D Perform the drop detect calibration '
page 7Ć4.
D Replace the:
D Service station ' page 6Ć42.
D Cable assembly ' page 6Ć47.
D Main PCA ' page 6Ć9.
Only replace one component at a
time and check if the error has gone
before replacing another component.
Using this procedure you will be
able to determine exactly which
component failed.