Dell UP3221Qb Simplified Service Manual - Page 11

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1. Unplug "SPS BD to

LED DRV BD Wire"

from SPS BD and LED

DRV BD (See Orange

mark)

2. Disassemble "SPS BD

to LED DRV BD Wire"

from the clips (See

Yellow mark)

3. Unplug "TBT BD Wire"

from "TBT BD" and

"SOC BD" (See Blue

mark)

4. Unplug "SOC Backlight

wire" from "SOC BD"

(See Green mark)

5. Tear off a yellow tape

and unplug "SOC wire"

from "SOC BD" (See

Purple mark)

6. Unlock 2 PCBA screws

to disassemble "SOC

BD" from I/F BD (See

Red mark)

7. Disassemble "Short

Spacer" from SOC BD

(See Pink mark)

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Screw-

driver

Torsion of

PCBA

screw: 5.0-

5.5 kg