3–12 Disassembly and Access Procedures
Publication 1336 IMPACT-6.2 – March 1998
!
ATTENTION: Wear a wrist-type grounding strap
when servicing 1336 IMPACT drives. Failure to
protect drive components against ESD may damage
drive components. Refer to Electrostatic Discharge
Precautions at the beginning of this chapter.
Important Before you remove connections and wires from the
drive components, mark the connections and wires to
correspond with their component connections and
terminals to prevent incorrect wiring during assembly.
1. Remove power from the Drive.
2. Open the Enclosure Cover. Refer to Opening the Drive Enclosure
in this chapter.
3. Check for zero volts at TB1 Terminals +DC and –DC.
4. Check for absence of control voltage at:
• TB10 and TB11
• L Option Board (if used)
5. Remove all wires from Terminal Strip TB3 if an L Option Board
is used.
6. Disconnect the following from the Main Control Board:
• J1 connector
• J5 ribbon cable connector
• J6 connector
• J7 connector
• Ground wire at stake-on connector
• All wires from the terminals on TB10 and TB11
7. Remove the screws fastening the Main Control Board to the
mounting plate.
8. Lift the Main Control Board upward to release it from the
slide-mount stand-offs.
9. Pull the Main Control Board away from the mounting plate.
Installation
Install the Main Control Board in reverse order of removal.
!
ATTENTION: Replace all guards and insulators
before applying power to the drive. Failure to replace
guards may result in death or serious injury.
AB Spares
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