Quick answer
Compare a scan with its original before changing image settings. On this model, contamination in the scanning path can produce lines absent from the paper.
Understand the issue
Use the cleaning procedure for the Designjet T1120 MFP rather than instructions for another scanner. Protect fragile originals and avoid scraping glass or applying an improvised solvent. A repeated mark in the same position provides a useful clue for service.
Step-by-step checks
- Scan a clean plain test original.
- Follow the model's documented scanner cleaning procedure.
- Repeat the same scan and consult its calibration guidance if needed.
Need help with this issue?
Share your model and symptoms. Confirm availability and the quote before booking.
What the results mean
If the line remains after documented maintenance, retain before-and-after samples for a technician.
| Stage | Action |
|---|---|
| Start | Scan a clean plain test original. |
| Compare | Follow the model's documented scanner cleaning procedure. |
| Next step | Repeat the same scan and consult its calibration guidance if needed. |
Repair checklist
If you need help, send RJ Computers your device model and the results of the checks above. Explain what must be preserved before work starts, especially files that have no other copy.
- Confirm assessment charges and what the quote includes.
- Ask for approval before additional parts or destructive software changes.
- Test the original symptom at handover and keep the repair details.
Ready for an assessment?
Share your model and symptoms. Confirm availability and the quote before booking.
Frequently asked questions
Does increasing scan resolution remove a physical streak?
No. It may capture the same unwanted mark in greater detail.
What should I record before requesting help?
Record the full model, exact error or symptom, recent changes and what you already tried. Explain whether important files have a separate backup.
How do I arrange a repair assessment?
Call RJ Computers on +91 99715 24677 or use the WhatsApp booking button. Confirm availability, diagnostic fees and the scope of work before booking.
Conclusion
If the line remains after documented maintenance, retain before-and-after samples for a technician.
Further reading: Official product guidance