Page 10 13900-103 Rev. A
Troubleshooting
The following list provides suggestions when a fault condition exists.
Note: Reference to a Harness Connection List is given in Appendix B.
Error Codes
This instrument is designed to display error codes when a malfunction has occurred. These error codes will aid the
technician to isolate the malfunction. Probable causes are listed in sequence of probability (first probable cause listed
is the most likely cause or the easiest to test). The following list provides the error codes and its definition.
Note: When Error Codes are displayed it is suggested that the instrument be “re-booted” (remove input power and
then re-apply input power) as the Error Code may be the result of a computer “glitch.” If after input power is
reset and the unit continues to display the Error Code, continue to the Error Code Table and check the prob-
able cause.
Note: To provide concise information on specific parts, assemblies, and/or connector designators (e.g., P1) they are
indicated and followed by the associated Parts Manual figure and item number (e.g., Fig. 7, 27) .
Note: Error Codes caused by components within the Optical Head Assembly (Fig.7, 7) require replacement of the
complete Optical Head Assembly and will only reference the replacement assembly. However, if an error code
can be caused by a disconnected connector within the assembly, reference to that connector is also given.
Error Code Table
Code# Definition Probable Cause
1 CPU diagnostic failed ........................................ Defective Control Board (Fig.7,31)
2 RAM diagnostic failed ....................................... Defective Control Board (Fig.7,31)
3 PROM diagnostic failed ..................................... Defective Control Board (Fig.7,31)
4 NVRAM diagnostic failed .................................. Defective Control Board (Fig.7,31)
5 EEPROM diagnostic failed ................................ Defective Optical Head Assy (Fig.7,7)
6 X motor failed ...................................................... J1 (Fig.7, 16) Disc’d
J8, J10, or J12 (Fig.7, 16) Disc’d
X,Y,Z Motor Connectors Interchanged
U5, U6, U7 (Fig.7,16) FPGA Chip Not Seated Properly
Defective Motor Data Cable Harness (Fig.7,21)
Defective Motor Board (Fig.7,16)
Defective Power I/O Board (Fig.7,27)
7 Y motor failed ...................................................... Same as Error Code 6
8 Z motor failed ...................................................... Same as Error Code 6
9 System failed to home motors .......................... Same as “Disengage Travel Lock” in this section
10 Travel lock is engaged ....................................... Same as “Disengage Travel Lock” in this section
11 System failed to park motors ............................ Same as “Disengage Travel Lock” in this section
12 Stray light has been detected .......................... Not used in this instrument
13 Positioning motor error ..................................... J1 (Fig.7, 16) Disc’d
Same as Error Code 7
14 Left VVL camera error ........................................ J2 (Fig.7, 31) Disc’d
Software incompatibility issue.
J1 (Fig.7, 7) Disc’d
J8 (Fig.7, 7) Disc’d
Defective Optical Head Assembly
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