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TN512955-E
4-4. Replacement of display unit
First, turn OFF the instrument power switch. Pull out the AC power cable. Draw the inner case
from the instrument as described in section 2-3. Unscrew 6 screws from the side panel, 2 screws
from the lower part of the inner case and remove the front frame from the inner case. Note that the
soldered AC power cable cannot completely be removed from the instrument. Unscrew 6 screws
fastening the display printed circuit board from the rear of the frame. Replace the display printed
circuit board. After replacement, measure contrast of LCD according to section 3-1.
Photo 4-5
Removal of front frame
Photo 4-6
Removal of display printed circuit board.
Screw
Screw
Screw
Summary of Contents for ZAJ
Page 1: ...Service Manual TN512955b E PARAMAGNETIC OXYGEN ANALYZER TYPE ZAJ...
Page 24: ...18 TN512955 E Appendix 3 1 CPU printed board J6 J5...
Page 25: ...TN512955 E 19 Appendix 3 2 A D printed circuit board J11 J15 J13 J12 J14...
Page 26: ...20 TN512955 E Appendix 3 3 Display output printed circuit board VR1...
Page 28: ......