83 Service Navigation3.1. IntroductionThis service manual contains technical information, which allow service personnel’s to understand and service this model.Please place orders using the parts list and not the drawing reference numbers.If the circuit is changed or modified, the information will be followed by service manual to be controlled with original service manual.3.2. Important Notice*When servicing, it is recommended dealing with Clean box. (Refer to "8.2. Clean Box" section of this service manual for details.)3.2.1. Camera Body Unit3.2.1.1. About VENUS FHD(IC6001) [Located on the Main P.C.B.]:• The VENUS FHD (IC6001) mounted on the Main P.C.B. consists of FLASH-ROM chip and VENUS chip, both chips are inte-grated as one-piece with soldered directly.• When replacing, always replace in pairs. (Units of service parts: integrated (one pair) state.)NOTE:• During servicing, do not press down hard on the surface of IC6001.Fig. S13.2.1.2. About Mount Box Unit (Ref. 7)1. This Service Manual does not contain the following repair service information for "MOUNT BOX UNIT"(Ref.7), because itrequires special facilities and equipment.a. Schematic diagram, Block diagram and P.C.B. layout.b. Parts list for individual parts.2. If the "MOUNT BOX UNIT" is confirmed as defective, exchange the "MOUNT BOX UNIT" as a unit (supplied as service partssize).3. Before exchange the "MOUNT BOX UNIT", the performances must be carefully checked, by following the "7.TroubleshootingGuide" section of this service manual.Important:1. After replacing the MOUNT BOX UNIT, the mount box data has to be stored to the unit.When the serial number of the mount box unit which is put on the shield plate of mount box unit is entered to the adjustmentunit, the applicable data is stored into the MAIN P.C.B..Refer to the adjustment instruction in the adjustment software for details.Fig. S22. The full adjustment must be performed after replacing the "MOUNT BOX UNIT", otherwise picture quality can not be meetwith specification.