Sony Xperia Z1 Working Instructions page 79

Re-Assembly
Upper inlay = Rear Cover Press Inlay
Lower inlay = Bottom Press Inlay
Place the phone in the Bottom Press Inlay and follow the
instruction in 1003-9107 Tool Catalogue – mechanical and
document Toothed Rack Press Instruction for use.
Press it with a pressure value of 483N +/- 50 N / 10 sec
(pressure value is adjust from 600N because of the weight of
the press fixture)
Apply 13 Ncm torque when tightening the Screw 3.5x1.4 with
Torx Bits T4
1277-9813 Rev 3
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Sony Mobile Communications AB – Company Internal
Working Instruction (mech)
79(82)