Service manual

QMS 3260/4032 Laser Printer - Base Engine Technical Manual 10-151
Release Version 11-97
Removal and Replacement Procedures
RRP 9.10 ESS Mother PWB (PL11.3)
Removal
1. Remove the QMS Video Controller
(
RRP 9.8
)
2. Remove the ESS Cover
(
RRP 9.9
)
.
3. Disconnect P416, J420, J421, J422, and J424 from the ESS Mother PWB.
4. Remove the four screws securin
g
the ESS Mother PWB to the ESS Box.
5. Remove the two 7mm nuts from J423.
6. Lift the ESS Mother PWB out of the ESS Box.
Handle the ESS Mother PWB by the edges of the PWB. Never touch any of the ICs that
are mounted on the PWB.
Replacement
1. Reinstall the ESS Mother PWB into the ESS Box.
Ali
g
n the PWB so J423 faces the QMS Video Controller location.
2. Use two 7mm nuts to secure J423.
3. Use four screws to secure the ESS Mother PWB to the ESS Box.
Do not full
y
ti
g
hten the screws.
4. Slide the QMS Video Controller into the ESS Box until P440 on the ESS mates with J423 on the ESS
Mother PWB.
5. Ti
g
hten the four screws securin
g
the ESS Mother PWB to the ESS Box.
Do not overtighten these four screws. You might crack the PWB.
6. Reconnect P416, J420, J421, J422, and J424 to the ESS Mother PWB.
7. Reinstall the ESS Cover
(
RRP 9.9
)
.
8. Reinstall the QMS Video Controller
(
RRP 9.8
)
.