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Part 5: Maintenance
4. DISASSEMBLY/ASSEMBLY
4.1 About Disassembly/Assembly
When disassembling and assembling the printer, refer to the parts catalog. In the parts
catalog, Figure Nos. are presented in the order of disassembly. Close-up diagrams are
also provided for additional detail.
4.2 Precautions for Disassembly/Assembly
4.2.1 Unlocking the carriage
When the BJ cartridge is installed, and the power is OFF, the carriage is normally
locked at the capping position (right edge of printer body). The purge unit has a
mechanism for locking the carriage to prevent the following:
• carriage movement from the capping position caused by vibration, drop during
transportation or by manual movement
• ink leakage from the BJ cartridges
• drying of the print head face plate
When servicing this printer, unlock the carriage by inserting a regular screwdriver
into the groove on the purge motor shaft and turn it clockwise to lower the carriage
lock pin.
When the carriage has been unlocked manually, insert the regular screwdriver into
the groove on the purge motor shaft, and turn it further clockwise, to return to the
"locked" position and then turn the power ON. If the printer is turned ON with the
carriage unlocked, an unrecoverable error sometimes occurs.
Figure 5-4 Unlocking the Carriage
5-6
Purge Motor Shaft
BJC-8500
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