4-9Phaser 3635MFP REP 3.1Repairs and AdjustmentsDraft 4REP 3.1 Main PWBParts List on PL 3.10RemovalWARNINGSwitch off the electricity to the machine. Disconnect the power cord from the customersupply while performing tasks that do not need electricity. Electricity can cause death orinjury. Moving parts can cause injury.WARNINGTake care during this procedure. Sharp edges may be present that can cause injury.CAUTIONBefore performing this procedure, refer to General Disassembly Precautions, GP 10.CAUTIONEnsure that E.S.D. procedures are observed during the removal and installation of the mainPWB. Make a visual check to ensure that the pins are fully inserted, without being damaged.1. If a new main PWB is to be installed, go to GP 3 Machine Status. If possible, print the fol-lowing reports:• System Configuration.• Local Address Book Members.• Group Address Book Members.2. Remove the left cover, REP 28.1.CAUTIONTake care to identify the connections to the Main PWB. The 4 pin connectors are interchang-able.• CN4, 4 wires: 3 grey, 1 black.• CN5, 3 wires: 2 grey, 1 black.• CN17, 4 wires: 3 grey, 1 black.• CN18, not used.• CN36, 4 wires: 2 grey 2 black.3. Unplug all the connectors from the main PWB, PL 3.10 Item 6.4. Remove the MSOK, PL 3.10 Item 14.5. Remove the memory DIMM, PL 3.10 Item 10.6. Remove the SIM card holder, PL 3.10 Item 8.7. If installed, remove the foreign device interface PWB, PL 3.10 Item 7.8. Remove 5 screws, then the main PWB, PL 3.10 Item 6.Replacement1. Replacement is the reverse of the removal procedure.2. If a new main PWB has been installed, perform the following:a. Install the MSOK onto the new main PWB, PL 3.10 Item 14.b. Install the memory DIMM onto the main PWB, PL 3.10 Item 10.c. Use the information on the printed lists to re-enter the customer’s settings. Refer toGP 4 System Administration Tools.
