4-18 Service Manual
Controller board removal
Warning: Observe all ESD precautions while handling electrostatic-discharge sensitive parts. See “Handling
ESD-sensitive parts” on page 4-1.
Warning: When replacing any one of the following components:
• Operator panel assembly
• Controller board
Replace only one component at a time. Replace the required component, and perform a POR before replacing a
second component listed above. If this procedure is not followed, the printer will be rendered inoperable. Never
replace both of the components listed above without a POR after installing each one, or the printer will be
rendered inoperable.
Warning: Never install and remove components listed above as a method of troubleshooting components.
Once a component has been installed in a printer, it cannot be used in another printer. It
must be returned to the manufacturer.
CAUTION - POTENTIAL INJURY: There is danger of explosion if a lithium battery is incorrectly
replaced. Replace it only with the same or an equivalent type of lithium battery. Do not recharge,
disassemble, or incinerate a lithium battery. Discard used batteries according to the manufacturer's
instructions and local regulations.
1. Remove the rear shield See “Rear shield removal” on page 4-7.
2. Remove the fax card. See “Fax card removal” on page 4-102.
3. Remove the fax card standoff (fax equipped models only) from the controller board.
4. Disconnect all the cables from the controller board.
5. Remove the six screws (A) that are securing the controller board to the controller board cage.
6. Remove the board.
Installation notes:
Warning: Do not start the machine into a Ready state to test it. See “Testing generic FRUs” on page 4-1.
Warning: When replacing the controller board, verify the cable from the high-voltage power supply is seated
properly. The cable may have come loose from the HVPS.
Y112730-2
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