User's Manual
Table Of Contents
- 1. FUNDAMENTAL OF THE SYSTEM
- 2. ELECTRONICS
- 3. MECHANISM
- 3.1 Replacing the Platen Roller (Including media cover)
- 3.2 Replacing the Keys Control Board
- 3.3 Replacing the Bluetooth Module (Option)
- 3.4 Replacing the Media Holder Assembly
- 3.5 Replacing the Main Board Assembly
- 3.6 Replacing the Print Head Assembly
- 3.7 Replacing the Stepping Motor
- 3.8 Replacing the black mark sensor assembly
- 3.9 Replacing the WiFi Module (Option)
- 4. TROUBLESHOOTING
- 5. Maintenance
- Revise History

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3.6 Replacing the Print Head Assembly
1. Refer to section 3.2 to section 3.5 to remove key control board, Bluetooth control board
(option), the media holder assembly, and main board assembly.
2. Use the long-nose pliers to remove two spring torsions on each side.
3. Take the gear holder and the gear, and push the print head holder on the each side to
remove the print head assembly.
4. Reassemble the parts in the reverse procedures.
Gear holder
Gear