JMA-5300MkIIsm

INDEX > 4.Replacement Procedure > 4.3 Scanner Unit NKE-2254 (JMA-5322-7/9/6HS)
4.3.2 Magnetron replacement (M1568BS)
[Required tools]
• A Phillips screwdriver for 4 mm screws
• A shielded Phillips screwdriver for 5 mm screws
• Tools for removing the cover from the scanner unit
(see Section 4.3.1, page 4-24)
[Replacement procedure]
1) Remove the covers from the right (starboard)
side (see Section 4.3.1, page 4-24) and loosen
the screws (four M4 screws) to remove the
magnetron cover.
Magnetron cover
Loosen the
four screws.
2) Make sure there is no charge remaining
between J2101 pin 1 and J2101 pin 3 in
the Modulator circuit board CPA-264.
(Multimeter requires DC1000V input
capability), and then remove the screws
(two M4 screws) holding the magnetron
cables (yellow and green) in place.
Magnetron
Remove the
four screws.
3) Remove the screws (four M4 screws)
holding the magnetron in place, then
replace the magnetron after cutting the
leads (yellow and green) for the
replacement magnetron to an appropriate
length.
Remove the
green cable.
Remove the
yellow cable.
Remove the
two screws.
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