Brother GTX-4 Service Manual

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Disassembly / Replacement / Adjustment
Ink supply, Power, Platen motor
1. Ink supply circuit board (SB5053)
This circuit board is located inside the rear cover of the ink cartridge.
This circuit board serves to control the ink supply passage for supplying ink to the print head.
2. Remaining ink detection circuit board (SB5539[K], SB5540[Y], SB5541[C], SB5542[M], SB5543[W12], SB5544[W34])
These circuit boards (6 pcs. in total) are located inside the rear cover of the ink cartridge.
These circuit board serve to detect the presence of six ink cartridges and the remaining ink levels.
3. Power circuit board (SB4721)
This circuit board is located inside the right of the rear of the main unit. This serves to supply necessary power to
respective components of the printer.
4. Power unit (SB5067)
This unit is located inside the right of the rear of the main unit. This is a power unit for the whole printer system.
5. Power transformer (SB5983)
This device serves to produce standby power when turning off the power.
6. AC cord insertion slot (SB4774)
This is located at the bottom of the right side of the main unit. This is used to plug the AC cord.
7. Mist exhaust fan (SB3039)
This is located at the top of the rear of the main unit.
This is a fan to exhaust the mist generating during printing.
8. Platen motor (SB5345)
This is located inside the center of the rear of the main unit. This motor serves to drive the platen back and forth.
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Brother GTX-4 Specifications

General

Brand	Brother
Model	GTX-4
Category	Printer
Language	English