Precautions For Disassembling And Reassembling The Printer; Unlocking The Carriage; Removing/Installing Self Tap Screws - Canon BJC-820 Service Manual

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Part 2: MAINTENANCE

2.3 Precautions for Disassembling and Reassembling the Printer

Note the following when disassembling or reassembling the printer. When

disassembling or reassembling the printer, refer to the parts catalog. The numbers in

the parts catalog illustrations indicate the disassembly sequence.

When the printer is shipped from the factory (or when the cartridge is installed and

the power has been turned off normally), the carriage is locked in the capping position

to secure the cartridge during transportation.

When the printer is powered on properly, the carriage is unlocked automatically. If the

printer cannot be powered on normally, it will be necessary to manually unlock the

carriage. This can be done by turning the gear of the purge unit in the direction of the

arrow by finger, as shown in

The printer unit is secured to the lower case with tap screws. Once the tap screws

have been removed, pieces of the molding remain attached to the screw threads.

Reinstalling the tap screws in this condition can damage the screw threads. To

prevent this, when reinstalling screws, remove the remains in advance or, where

possible, use new screws. Also, blow away any remains on the mold before reinstalling

the tap screws.

Figure 2-5 Unlocking the

Figure 2-5 Unlocking the Carriage

2-6

Carriage.

BJC-8200

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