Brother DCP6690CW Service Manual page 230

Assembling Notes
• If you replace the main PCB, you need to load programs onto the flash ROM, restore the
machine information that has been backed up in an external memory (refer to
Section 9.4.10), and make specified adjustments of various settings (refer to
Section 7.3). Before starting, make sure that the head/carriage unit is mounted.
• Before securing the main PCB shield, route the harnesses on the top of the lower cover as
shown below. Make sure that the main-MJ (EXT) harness
are routed through the SDAA enclosure
(See the illustration given on
the lower cover.)
Paper feed motor harness
ASF motor harness
DX cam switch harness*
PF encoder/
registration
sensor harness
Switchback paper
detection sensor
2
harness*
*1
.
page 6-57 for the routing of those harnesses on the left side of
Carriage motor harness
2
Power supply harness
6-49
*1
and main-MJ (LINE) harness
*1 For MFC only
*2 For duplex print models
Main-MJ (LINE)
harness (yellow)*
Main PCB
Chapter 9,
Chapter 7,
*1
1
1
SDAA enclosure*
Main-MJ (EXT)
1
harness (black)*
(6_41)
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