Brother DCP6690CW Service Manual page 253

(5) Peel off the PF encoder disk from the PF roller gear L only when it should be replaced.
Note: Once removed, the PF encoder disk will become unusable and a new disk will have
to be put back in.
Note: Remove any adhesive remaining left on the PF roller gear L.
PF encoder sensor
PF encoder disk
Assembling Notes
• When attaching the PF encoder disk to the PF roller gear L, using a spatular tool makes the
job easier. Put on clean gloves to protect the disk surface from dust or fingerprints.
• If you replace the ink absorber box (without replacing the main PCB), you also need to
replace the flushing box (see
specified in Chapter 7, Section
PF roller gear L
Lower cover
Section 6.1.15) and reset both the purge and flushing counters as
7.5.
6-72
(6_66)
Confidential