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Ishida Uni-7 (all models), Ishida Uni-9H.
Subject: Troubleshooting and correcting light or missing print.
Summary:
This technical bulletin will go through the various mechanical adjustments that can be made to
eliminate light or missing print if all menu settings have been exhausted.
Required tools:
• Philips screwdriver #1 and #2
• Stubby #2 Philips screwdriver
• 7mm socket and ratchet
• Snap ring pliers
• 70% - 91% Isopropyl alcohol
• Cotton swabs
Rev 3/10/21
Contents of this document are the sole copyright of Rice Lake Weighing Systems (RLWS), not for use without RLWS written consent.
Figure 1 – Tools
TB20200730_Troubleshooting_light_or_missing_print_Uni-7_Uni-9H_Rev1
TECHNICAL BULLETIN
Bulletin Number TB20210310
March 10th, 2021
Page 1 of 12
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Summary of Contents for Rice Lake Ishida Uni-7
- Page 1 • 70% - 91% Isopropyl alcohol • Cotton swabs Figure 1 – Tools Rev 3/10/21 TB20200730_Troubleshooting_light_or_missing_print_Uni-7_Uni-9H_Rev1 Page 1 of 12 Contents of this document are the sole copyright of Rice Lake Weighing Systems (RLWS), not for use without RLWS written consent.
- Page 2 Figure 2 – Dirty printhead with label residue and debris Figure 3 – Clean printhead free of debris Rev 3/10/21 TB20200730_Troubleshooting_light_or_missing_print_Uni-7_Uni-9H_Rev1 Page 2 of 12 Contents of this document are the sole copyright of Rice Lake Weighing Systems (RLWS), not for use without RLWS written consent.
- Page 3 If no other scales are available for testing, try labels from another case or a different lot number. Figure 4 – Label roll with water damage Rev 3/10/21 TB20200730_Troubleshooting_light_or_missing_print_Uni-7_Uni-9H_Rev1 Page 3 of 12 Contents of this document are the sole copyright of Rice Lake Weighing Systems (RLWS), not for use without RLWS written consent.
- Page 4 Attempt to find and replace the damaged or worn component(s). Order a new cassette assembly. Rev 3/10/21 TB20200730_Troubleshooting_light_or_missing_print_Uni-7_Uni-9H_Rev1 Page 4 of 12 Contents of this document are the sole copyright of Rice Lake Weighing Systems (RLWS), not for use without RLWS written consent.
- Page 5 Figure 7 – Two screws behind the two outer spring posts Rev 3/10/21 TB20200730_Troubleshooting_light_or_missing_print_Uni-7_Uni-9H_Rev1 Page 5 of 12 Contents of this document are the sole copyright of Rice Lake Weighing Systems (RLWS), not for use without RLWS written consent.
- Page 6 Figure 9 – Referencing step “b)” pulling the cassette magnet all the way forward Rev 3/10/21 TB20200730_Troubleshooting_light_or_missing_print_Uni-7_Uni-9H_Rev1 Page 6 of 12 Contents of this document are the sole copyright of Rice Lake Weighing Systems (RLWS), not for use without RLWS written consent.
- Page 7 Figure 11 – Black guide roller screw, adjust per step “c” above Rev 3/10/21 TB20200730_Troubleshooting_light_or_missing_print_Uni-7_Uni-9H_Rev1 Page 7 of 12 Contents of this document are the sole copyright of Rice Lake Weighing Systems (RLWS), not for use without RLWS written consent.
- Page 8 Figure 13 – Washer placement example and reassembly Figure 12 – Three snap rings to be removed Rev 3/10/21 TB20200730_Troubleshooting_light_or_missing_print_Uni-7_Uni-9H_Rev1 Page 8 of 12 Contents of this document are the sole copyright of Rice Lake Weighing Systems (RLWS), not for use without RLWS written consent.
- Page 9 Figure 14 – Apply pressure downwards or upwards to the right side of the print head bracket Rev 3/10/21 TB20200730_Troubleshooting_light_or_missing_print_Uni-7_Uni-9H_Rev1 Page 9 of 12 Contents of this document are the sole copyright of Rice Lake Weighing Systems (RLWS), not for use without RLWS written consent.
- Page 10 Replace if necessary. Figure 15 – Press fit pivots on print head bracket Rev 3/10/21 TB20200730_Troubleshooting_light_or_missing_print_Uni-7_Uni-9H_Rev1 Page 10 of 12 Contents of this document are the sole copyright of Rice Lake Weighing Systems (RLWS), not for use without RLWS written consent.
- Page 11 Reassemble the platter support and top cover of the scale removed in steps “a)” and “b)”. Rev 3/10/21 TB20200730_Troubleshooting_light_or_missing_print_Uni-7_Uni-9H_Rev1 Page 11 of 12 Contents of this document are the sole copyright of Rice Lake Weighing Systems (RLWS), not for use without RLWS written consent.
- Page 12 Refer to steps “ii.” and “iii.” under step “c)” For further guidance or assistance, please contact Rice Lake Weighing Systems. Rev 3/10/21 TB20200730_Troubleshooting_light_or_missing_print_Uni-7_Uni-9H_Rev1 Page 12 of 12 Contents of this document are the sole copyright of Rice Lake Weighing Systems (RLWS), not for use without RLWS written consent.
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