HP 750 - Manual (Page 122)

8-4 Troubleshooting C4705-90000
Service Tests and Error Messages
To aid fault diagnosis, error messages in words and hexaĆdecimal error codes are displayed,
andthere is a full set of Service Tests available on the extensive Service Menu.
This is then followedby Error message/code listings groupedby area of fault to assist in
diagnosis. Within the table facing the Error Messages/Codes, corrective actions are listed.
Service tests and troubleshooting tips relevant to the faulty area are included.
Two types of error messages can be viewedon the frontĆpanel display:
D Worded error messages.
D System error codes.
Worded Error Messages
Worded error messages indicate that a user error or an internal error has occurred. Some
error messages require action to clear, andothers are only displayeduntil the next operation
is performedby the plotter. See the table on page 8Ć5 for an alphabetical listing.
Error Codes
The frontĆpanel displays a sixĆdigit hexaĆdecimal error code, the meanings of which are given
in this Chapter. See the table on page 8Ć9 for a numerical listing of possible error codes.
The following table gives a quick explanation of the error codes:
Error code Type of Problem
01xxxx Hardware Failure
02xxxx Software/Memory Failure
03xxxx Hardware Problem
04xxxx and05xxxx MIO System Failure
06xxxx Pen Alignment System Error
07xxxx Drop Detect System Error
Service Tests
The plotter has many internal service tests that can be usedin troubleshooting. Instructions
for entering the service tests menu are given on page 8Ć20.