Canon GCOM: troubleshooting and error codes
The ServiceForge knowledge base holds 22 documented symptoms for the Canon GCOM, with 22 ranked causes, 0 diagnostic checks with test points and expected values, and 0 error codes. Each symptom below shows its causes and the first check; the rest is one connection away. Connect ServiceForge to your AI
Symptoms
BCC error may occur on send caution
Exposure conditions sent to X-ray generator may be corrupted due to external noise
Ranked causes
- 1. Electronic noise interference on communication cables (occasional)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
Cannot convert received data to numerical value
DLL cannot convert received X-ray generator data to numerical values
Ranked causes
- 1. DLL does not support this X-ray generator (occasional)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
Communication circuit not established
Cannot establish communications circuit with X-ray generator
Ranked causes
- 1. X-ray generator powered off or cables disconnected (common)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
DLL cannot communicate with X-ray generator after CXDI restart
Communication fails between DLL and X-ray generator when CXDI is restarted while X-ray generator power is ON
Ranked causes
- 1. Communication link not re-established after CXDI restart (common)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
EOT timeout error
X-ray generator did not send EOT (end of transmission) signal
Ranked causes
- 1. X-ray generator powered off or cables disconnected (common)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
Exposure condition mismatch between operation unit and X-ray generator patient safety
Displayed kV, mA, msec values differ between operation unit and X-ray generator before irradiation
Ranked causes
- 1. Exposure parameters not synchronized after DLL sends settings (unknown)
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Exposure conditions not displayed on OPU patient safety
OPU is not displaying exposure conditions needed for X-ray generator communication
Ranked causes
- 1. OPU settings not configured to display exposure conditions; OPU display mismatched with X-ray generator (occasional)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
Fatal error within DLL
Error has occurred within the DLL software component
Ranked causes
- 1. Internal DLL error (unknown)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
File not found error
Required file has been deleted, moved, or renamed
Ranked causes
- 1. File missing from D:\CCR directory (occasional)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
INI file settings incorrect
Dialog box appears indicating configuration errors in cgbig3.ini file at startup
Ranked causes
- 1. Invalid INI file parameters (file name, section name, text length, exposure conditions, serial port settings) (common)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
Insufficient memory
Not enough system memory available
Ranked causes
- 1. Insufficient system RAM or memory leak (occasional)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
OPU not functioning normally patient safety
CXDI (OPU component) is not working properly
Ranked causes
- 1. OPU hardware or software malfunction (rare)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
Text data timeout error
X-ray generator does not send data after send request (TM3)
Ranked causes
- 1. X-ray generator powered off or cables disconnected (common)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
Unknown data received from X-ray generator
Undefined data received that DLL does not support
Ranked causes
- 1. DLL does not support this X-ray generator model (occasional)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
Win32 API error within DLL
Windows API error has occurred within DLL
Ranked causes
- 1. Windows system error affecting DLL (unknown)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
X-ray generator communication error - received data conversion failure
Actual irradiation information received cannot be converted to data reportable to OPU
Ranked causes
- 1. Incomplete description in [ExpCondFromGen] section of cgbig3.ini (occasional)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
X-ray generator communication error - received data length mismatch (long)
Received irradiation data from X-ray generator is longer than specified exposure conditions
Ranked causes
- 1. Conflict between actual irradiation information and [ExpCondFromGen] section in cgbig3.ini (occasional)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
X-ray generator communication error - received data length mismatch (short)
Received irradiation data from X-ray generator is shorter than expected
Ranked causes
- 1. Conflict between actual irradiation information and [ExpCondFromGen] section description in cgbig3.ini (occasional)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
X-ray generator communication error - text string mismatch
DLL cannot create text string to send to X-ray generator during communication
Ranked causes
- 1. Conflict between [InitOpu] and [ExpCondToGen] sections in cgbig3.ini (occasional)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
X-ray generator no response to send data
X-ray generator does not respond to data sent (RT2)
Ranked causes
- 1. X-ray generator powered off or cables disconnected (common)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
X-ray generator no response to send request
X-ray generator does not respond to send requests at startup (RT1)
Ranked causes
- 1. X-ray generator powered off or cables disconnected (common)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
X-ray generator not ready to receive
X-ray generator responds negatively to send requests
Ranked causes
- 1. X-ray generator not ready for receiving (common)
1 corrective action and part numbers are in ServiceForge. Connect ServiceForge to your AI
Community
0 fixes logged by technicians through their AI, with outcomes, for this model.
ServiceForge knowledge base record. Field-unverified unless technicians confirmed it. A teaching summary of the record, not a service manual. Export 2026-10-14.