Service manual

EPSON Stylus Photo R340/350 Revision A
Adjustment Adjustment Except Adjustment Program 108
3.3 Adjustment Except Adjustment Program
Following is adjustment except Adjustment Program.
3.3.1 PG Adjustment
[Purpose]
This adjustment is required when removing or replacing the following parts/units in
order to secure the specified space between the print-side of the Print Head and the
paper.
 Carriage Unit
 CR Guide Shaft
 Left (Right) Parallel Adjust Bushing
(Including when having moved the Left (Right) Parallel Adjust Bushing)
[Adjustment Procedure]
1. Make both sides of the two Thickness Gauge (1.30mm and 1.46mm) clean by
wiping with Bemcot with a little alcohol.
2. To make the PG position minus (-), turn the gear of the APG Assy. and match the
flag centre of the Right CR Cam with the PG Sensor.
Figure 3-6. Setting PG Position
3. Match the 0 position (Hole point of gear) of the Left (Right) Parallel Adjust
Bushing with the rib of the Main Frame.
Figure 3-7. Setting Parallel Adjust Bushing
4. Move the Carriage Unit to the centre of the printer and remove the Cartridge
Lever. Then, set the PG-Adjustment Dummy Cartridge.
Gear of the APG Assy.
Right CR Cam
PG Sensor
Flag
Left Parallel Adjust Bushing
Ribs
Hole point
Right Parallel Adjust Bushing
Ribs
Hole point