HP LASERJET PRO 400 - Page 124

2. Release the wire harnesses from the retainer (callout 1).
Figure 1-134 Remove the duplex-reverse drive assembly (2 of 4)
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3. Remove three screws (callout 1).
Figure 1-135 Remove the duplex-reverse drive assembly (3 of 4)
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98 Chapter 1 Removal and replacement ENWW