Due to an internal high voltage area, take extra care not to get an electric shock when detaching covers. After removing covers, be sure to discharge the main condenser according to the instructions of repair manuals. When disassembling/(re)assembling, be sure to use the conductive mat (J5033) and wrist strap (J5033-5) for static protection of electrical parts. Before disassembling, be sure to remove batteries or AC power wires. When disassembling, make sure to memorize the processing state of wires and FPC, screws to be fixed and their types, etc. Because the low pass filter of the imaging CCD PCB is easily damaged, handle it with enough care. When "Seprating Front and Rear bodies","Disassembling Image PCB",and"Disassembling Bayonet", be sure to perform"Reset of AF defocus compensation amount"by D2X adjustment software after reassembly.
Put the tool (J18001-1) on the surface plate, and set the dial gauge to "0". Turn the index ring to shift the position by "0.42 mm" from "0" that was set in (This position is "0" of D50.) Measure the body back based on "0" reference position of the index ring. Measure 4 parts from the bayonet face to the CCD-PCB attaching face. In case it is out of standard, make an adjustment by loosening screws that attach the front and rear bodies, or by putting the washer(s) on the contact surface between the front body and rear body.
D50 Inspection and Adjustment Software (J18385) This inspection and adjustment software runs on Windows. Install the software by following the below procedure. <Operating environment> The following operating environment is required for installing this program on PC. As long as the above hardware requirements are met, any PC such as desktop or laptop, etc is available. <Procedure for installation> The file (D50SOFT.EXE) of this program is provided via FD or e-mail. Because this is the self-extracting file, decompress the file before installing, following the next procedure. The operating system used here is "Windows 98 SE". 1. Create a folder for installation under a name you like and PC drive. (e.g.) C:\D50 Paste the file (D50SOFT.EXE) in the created folder. 2. Double-click on the pasted file to display the following screen. 3. Open the folder D50SOFT , the following 5 files and PTPControl folder are appeared.
The summary on each adjustment is as follows: (1) Sensitivity adjustment Face the camera to the color viewer of LV13 equiv. putting the ND filter (-5 step) between them, and make an adjustment by changing the ampgain so that G output can fall in the standard range. Adjust the gain value so that the G output average value (Average of Gr/Gb) in the center (300×300 pixels) can reach the target output level (approx. 600LSB). The actual adjustment of the gain value is made only under the condition of ISO200 and ISO1600, and the medium sensitivity is calculated by the adjustment values of these 2 conditions. For target output level, use the G output average of sensitivity reference value (ISO200) that was calculated by the reference body. (2) Gr/Gb compensation adjustment (R/B filter) Face the camera to the light-emitting box (color viewer) of LV13 equiv. putting the SP3 (R filter)/SP1 (B filter) between them, and make an adjustment so that the output difference in G output average between G-B line and G-R line when the whole screen is divided into areas can fall in the standard range. (3) Sensitivity ratio adjustment Face the camera to the color viewer of LV13 equiv., and make an adjustment so that the R/G, B/G output becomes the same as the output ratio of the sensitivity ratio reference value that was calculated by the reference body. Adjust only under the condition of ISO200, and use the average value of the center (300 pixels × 300 pixels). (4) Gr/Gb compensation inspection (No filter).
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