User manual NIKON D50 - SERVICE MANUAL

VBA12001-R.3668.A VBA12001 REPAIR MANUAL Copyrigh 2005 by Nikon Corporation. All Rights Reserved. !! Printed in Japan June 2005 Type Effective pixels CCD Image size (pixels) Lens mount Compatible lenses* Type G or D AF Nikkor Micro Nikkor 85 mm f/2.8D Other AF Nikkor AI-P Nikkor Non-CPU Single-lens reflex digital camera with interchangeable lenses 6.1 million 23.7 × 15.6 mm; total pixels: 6.24 million · 3008 × 2000 (Large) · 2256 × 1496 (Medium) Specifications VBA12001-R.3668.A · 1504 × 1000 (Small) Nikon F mount (with AF coupling and AF contacts) All functions supported All functions supported except autofocus and some exposure modes All functions supported except 3D color matrix metering II All functions supported except 3D color matrix metering II and autofocus Can be used in mode M, but exposure meter does not function; electronic range finder can be used if maximum aperture is f/5.6 or faster Picture angle Viewfinder * IX Nikkor lenses can not be used Equivalent in 35-mm format is approximately 1.5 times lens focal length Fixed-eyelevel penta-Dach-mirror type ­1.6 ­ +0.5 m­1 18 mm (­1.0 m­1) Type B BriteView clear matte screen Mark V with superimposed focus brackets Approximately 95% of lens (vertical and horizontal) Approximately 0.75× (50-mm lens at infinity; ­1.0 m­1 Quick return Instant return with depth-of-field preview Can be selected from 5 focus areas · Autofocus (AF): Instant single-servo AF(AF-S);continuousservo AF (AF-C); auto AF-S/AF-C selection(AF-A); predictive focus tracking automatically activated according to subject status · Manual focus (M) Excluding lenses for F3AF Diopter adjustment Eyepoint Focusing screen Frame coverage Magnification Reflex mirror Lens aperture Focus-area selection Lens servo - M1 - VBA12001-R.3668.A Autofocus TTL phase detection by Nikon Multi-CAM900 autofocus module with AF-assist illuminator (range approximately 0.5­3.0 m / 1´8­ 9´10) ­1 ­ +19 EV (ISO 100 at 20 °C/68 °F) Single-area AF, dynamic-area AF, dynamic-area AF with closest subject priority Focus can be locked by pressing shutter-release button halfway (single-servo AF) or by pressing AE-L/AF-L button Three-mode through-the-lens (TTL) exposure metering 3D color matrix metering II (type G and D lenses); color matrix metering II (other CPU lenses); metering performed by 420segment RGB sensor Weight of 75% given to 6, 8, 10, or 12-mm circle in center of frame Meters 3.5-mm circle (about 2.5% of frame) centered on active focus area 0 ­ 20 EV (3D color matrix or center-weighted metering) 2 ­ 20 EV (spot metering) CPU coupling Digital Vari-Program Child, close up, Detection range AF-area mode Focus lock Exposure Metering Matrix Center-weighted Spot Range (ISO 100 equivalent, f/1.4 lens, 20 °C/68 °F) Exposure meter coupling Exposure control Operating mode auto, portrait, night portrait), landscape, sports, programmed auto (P) with flexible program; shutter-priority auto (S); aperture priority auto (A); manual (M) Exposure compensation Bracketing Exposure lock Shutter Speed ­5 ­ +5 EV in increments of 1/3 or 1/2 EV Exposure and / or flash bracketing (up to ± 2EV over 3 exposures) Luminosity locked at detected value with AE-L/AF-L button Combined mechanical and CCD electronic shutter 30 ­ 1/4000 s in steps of 1/3 or 1/2 EV, bulb, remote 200 ­ 1600 (ISO equivalent) in steps of 1/3 EV Auto (TTL white-balance with 420 pixels RGB sensor), six manual modes with preset white balance 3 exposures in increments of 1, 2, or 3 Sensitivity White balance Bracketing - M2 - VBA12001-R.3668.A Built-in Speedlight Guide number (m / ft at 20 °C/68 °F) Flash Sync contact Flash control TTL · , , , , auto flash with auto pop-up · P, S, A, M : manual pop-up with button release · ISO 200: approximately 15/49 (manual 17/56) · ISO 100: approximately 11/36 (manual 12/39) X-contact only; flash synchronization at up to 1/500 s TTL flash control by 420-segment RGB sensor (CPU lenses only) · Built-in Speedlight: i-TTL balanced fill-flash for digital SLR, or standard i-TTL flash for digital SLR (spot metering or mode dial set to M) · SB-800 or 600: i-TTL balanced fill-flash for digital SLR, or standard i-TTL flash for digital SLR (spot metering) Auto aperture Non-TTL auto Range-priority manual Sync modes Available with SB-800 with CPU lens Available with such Speedlights as SB-800, 80DX, 28DX, 28, 27, and 22s Available with SB-800 · · · : front curtain sync, red-eye reduction : slow sync, slow sync with red-eye reduction : front curtain sync and red-eyereduction available with optional Speedlights · P, S, A, M: front curtain sync, slow sync, rear-curtain sync, Flash compensation Accessory shoe Creative Lighting System Storage Media File system Compression red-eye reduction, slow sync with red-eye reduction ­3 ­ +1 EV in increments of 1/3 or 1/2 EV Standard ISO hot-shoe contact with safety lock Supports Flash Color Information Communication and FV lock with built-in Speedlight, SB-800, and SB-600. SB-800 and 600 also support Advanced Wireless Lighting. SD (Secure Digital) memory cards Compliant with Design Rule for Camera File System (DCF) 2.0 and Digital Print Order Format (DPOF) · NEF (RAW): compressed 12-bit · JPEG: JPEG baseline-compliant - M3 - VBA12001-R.3668.A Self-timer Monitor Electronically controlled timer with 2 ­ 20 s duration 2.0 , 130,000-dot, low-temperature polysilicon TFT LCD with brightness adjustment Video output External interface Tripod socket Firmware upgrades Supported languages Can be selected from NTSC and PAL USB 2.0 Hi-speed 1/4 (ISO) Firmware can be upgraded by user Chinese (Simplified and Traditional), Dutch, English, French, German, Italian, Japanese, Korean, Portuguese, Russian,Spanish, Swedish · One rechargeable Nikon EN-EL3 Li-ion battery; charging voltage (MH-18a quick charger or optional MH-19 multi charger): 7.4 V DC · EH-5 AC adapter (available separately) Power source Dimensions (W × H × D) Weight Approximately 133 × 102 × 76 mm (5.2 × 4.0 ×3.0 ) Approximately 540 g (1 lb 3 oz) without battery, memory card, body cap, or monitor cover Operating environment Temperature 0 ­ 40 °C (+32 ­ 104 °F) Humidity Less than 85% (no condensation) · Unless otherwise stated, all figures are for a camera with a fully-charged battery operating at an ambient temperature of 20 °C (68 °F). · Nikon reserves the right to change the specifications of the hardware and software described this manual at any time and without prior notice. Nikon will not be held liable for damages that may result from any mistakes that this manual may contain. - M4 - Points to notice for Disassembly / Assembly VBA12001-R.3668.A WARNING 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. Note: 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. Points to notice for Lead-free solder products Lead-free solder is used for this product. For soldering work, the special solder and soldering iron are required. Do NOT mix up lead-free solder with traditional solder. Note: 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. - 1 - Disassembly 1. Separation of Front and Rear Bodies Bottom Cover Take out the screws (#5692 and #5697) and 7 screws (#5677). Remove the bottom cover. #5692 #5697 #5677×7 VBA12001-R.3668.A Bottom cover Rear cover Take out 4 screws (#623). Cover to remove the rear cover. Note: Remove the rear cover slowly so as not to cut TFT-PCB connection FPC of the upper portion of the cover. #623×4 Rear cover - 2 - VBA12001-R.3668.A Remove TFT-PCB connection FPC from the connector. TFT-PCB connection FPC SB pop-up Cut the tracing film sheet, etc into the below size of piece. Then insert it into the clearance of the top cover pop-up part as shown right, and pop it up by sliding the sheet in the direction of the arrow. Approx.2cm Approx. 4cm - 3 - VBA12001-R.3668.A WARNING Due to an internal high voltage area, take extra care not to get an electric shock when detaching covers. After removing the covers, be sure to discharge the main condenser according to the instructions of repar manuals. #B5028 Covers First, remove the front cover (#B5024). AUTO #635 #611 × 2 #611×2 #5124 #659 #5121 #B5024 #635 #26 #635 Discharge Main condenser Discharge the main condenser from its both terminal. 2K/5W #627 × 3 Main condenser - 4 - VBA12001-R.3668.A DG shield plate Remove 2 soldering bridges. Take out 3 screws (#627). Remove the DG shield plate (#78). #627×3 #78 Soldering bridges DG-PCB unit Remove 5 connectors. Unsolder 2 reset SW wires. Take out 2 screws (#663) and the screw (#627) to remove the DG-PCB unit (#B2031). #663×2 #627 #B2031 Green Yellow : Reset SW wire - 5 - VBA12001-R.3668.A CCD/FPC unit Take out 3 screws (#669) to remove the CCD/FPC unit (#B2032). #669×3 #B2032 - 6 - VBA12001-R.3668.A Top Cover Unsolder 4 wires. Gray White Orange Black Take out 2 screws each of (#635, #656, and #5618). The eyepiece frame (#B271) comes off, too. #635×2 #B0023 #656 656 #B271 #5618×2 Remove the top cover FPC (#1007) from the connector. Unsolder 2 wires of the top cover FPC. * The solder land of gray wire is same as AF assist lanp unit. Top cover FPC Black *Gray - 7 - VBA12001-R.3668.A SB upper case Press the pop-up lever A part of the top cover unit so that the built-in SB pops up. Take out 2 screws (#629). Push from beneath the hooking lever of the SB upper case as shown in Fig.1 . Then slide 2 hooks in the direction of the arrow to remove the lever. Deactivate pop-up of the SB lower case unit, and remove the SB upper case. (Fig.2) Pop-up lever A part SB upper case Hooking lever Fig.1 #629×2 SB lower case unit Fig.2 Remove the tape (#709). Remove the optical fiber (#470) from the sensor. #470 Optical fiber #709 Note) Both ends of the optical fiber are just inserted in each part without any adhesive. - 8 - VBA12001-R.3668.A Top cover FPC / Wiring Remove the soldering bridges. Remove the 2 solders of AF-assist illuminating lamps. Remove the solders of 2 SPD sensor wires. Remove the solders of 2 pop-up change SW wires. Remove the solders of 5 accesory shoe contacts. AF-assist illuminating lamp covered for insulation AF-assist illuminating lamp Soldering bridges Pop-up change switch (Black) Pop-up change switch (Green) Accessory shoe contact ×5 SPD sensor wire (Green) SPD sensor wire (Black) Remove the wire-retaining screw (#650). Remove wires. #650 Wires - 9 - Flash-up spring #305 VBA12001-R.3668.A Unhook the Flash-up spring (#305). Take out the screw (#650) and remove the Flash-up spring (#305). #650 SB lower case unit Pull each wire out of hole. Loosen 2 hooks of the collar (#308) to remove it. Remove the SB case axle (#306). Detach the SB lower case unit (#B2302) from the top cover. #B2302 2 hooks #306 #308 Remove #B341 and #B342. #B341 #B342 - 10 - VBA12001-R.3668.A M/DFPC unit Take out 2 screws (#640) to remove the M/DFPC unit (#B2455). Remove the rubber SW (#389) and shooting operation-mode button (#388). #B2455 #388 #389 #640 × 2 AF-assist illuminating lamp / Command dial Remove the light-leak proof sponge (#766). Take out the screw (#635). Remove the AF-assist illuminating lamp (#B325). Remove 2 screws (#635). Lift to slack the command dial (#B367). #B325 #635 #766 #635 × 2 #B367 - 11 - VBA12001-R.3668.A Top cover FPC Take out the screw (#644). Take out 5 screws (#635). Remove the top cover FPC (#B2007). Remove the AE-L rubber SW (#387) and AE-L button (#386). #635 × 5 #B2007 #644 #733 #331 #1007 #387 #1044 #735 #734 #332 × 2 #330 #B367 #386 - 12 - VBA12001-R.3668.A Release button / other small parts #335 #5460 #461 #350 #351 #5345 #352 #5386 #387 #347 #348 #604 × 2 #382 #5381 #5383 - 13 - VBA12001-R.3668.A Outer LCD window / shoe mold unit / accessory shoe / other small parts #318 #316 #5451 B317 #338 #453 #452 #454 #463 #640 #326 #321 #654 × 4 #336 × 2 #322 #337 × 2 - 14 - VBA12001-R.3668.A Main PCB unit Remove 3 FPCs from the connector. Unsolder 10 wires. Take out 3 screws (#640) to remove the main-PCB unit from the sub-PCB. Brown Orange Blue Black Red White Pink Blue Black #640×3 Red Main PCB unit #1001 Removal of Connector Remove 2 FPCs from the connector - 15 - VBA12001-R.3668.A Separation of Front and Rear bodies Take out 3 screws (#699), 4 screws (#634), and 3 screws (#642) to remove the front body. Rear body #634×4 Front body #699×3 #642×3 - 16 - 2. Rear body Sub-PCB unit Unsolder 3 wires of electronic buzzer . Remove the soldering bridges. Take out 3 screws (#644). Remove Sub-PCB.(#B2002) #644×3 VBA12001-R.3668.A #B2002 3 wires of electronic buzzer . Soldering bridges Electronic buzzer unit / Battery-extrusion spring #673×3 Take out 3 screws (#673). Remove the retaining plate (#159). Remove the battery-extrusion spring (#158). Remove the electronic buzzer unit (#1055). #159 #1055 #158 - 17 - VBA12001-R.3668.A Clock battery unit Unsolder 2 wires of the clock battery unit. Remove 2 screws (#642). Remove the clock battery holder (#73). Remove the clock battery unit (B1059). Red Black B1059 #73 642×2 - 18 - VBA12001-R.3668.A SB-PCBwires Unsolder 4 wires of DC/DC PCB unit. Be careful that some PCBs at the inital stage of mass-production have different colored wire. Black Red Yellow Blue Black Red Blown Blue Black Red Blown Red White marking is painted for identification. Bottom wires Remove 2 pieces of tape that arrange wires (#715). Remove wires. Wire arrangement tape #715×2 - 19 - VBA12001-R.3668.A SQ PCB Take out 2 screws (#627). Take out the screw (#633). Remove the SQ-PCB (B91). #627×2 #633 (B91 DC/DC PCB unit Take out 2 screws (#693). Remove the DC/DC PCB unit (B2030). #693×2 B2030 - 20 - VBA12001-R.3668.A Lug plate / Bottom base unit Take out the screw (#647). Remove #80. Take out the screw (#633). Remove #81. Remove #2030. Take out 2 screws (#633). #80 #647 #633 #81 #2030 #633×2 Take out 4 screws (#635). Remove the bottom base unit (#66) and bottom conduction plate (#106). #635×4 #106 #66 - 21 - VBA12001-R.3668.A SB unit Remove the condenser (B1043). Take out 2 screws (#635). Remove the SB unit (B2041). #635×2 The condensor (#B1043) is fixed with 2 pieces of the both-sided adhesive tape (#754). B2041 B1043 - 22 - VBA12001-R.3668.A Rear body small parts #617×2 #146 #617×2 #145 #149 #76×2 #150 #777 #746 #747 #714 #790 #680×2 #790×2 #764×2 #761 #765 - 23 - 3. Front Body Eyepiece unit Metering FPC unit VBA12001-R.3668.A Take out 3 screws (#291) to remove the metering FPC unit (#B2008). 3 springs (#290) come off. Take out 2 screws (#635) to remove the metering FPC-base unit (#B286). Remove the tape (#796). Take out the screw (#635) to remove the eyepiece-lens unit (#B261). #291×3 #B2008 #290×3 #635×2 #B286 #635×2 #796 #B261 Note: The screws (#291) are attached with the adhesive. In case they (#291) are moved, AE CCD position adjustment (ref. Assembly) becomes necessary. - 24 - Penta unit #B4-2 Adhesive #642×2 VBA12001-R.3668.A #709×2 #256 #255 #283 #642×2 #B277 #B1021 #282 #280×2 #1046 #278 #739×2 #B279×2 #9 #792A×2 #297 #3 #284 - 25 - VBA12001-R.3668.A AF PCB unit Remove the tape (#709). Remove AF-PCB connectoin FPC from connector. Take out 3 screws (#636) with Hexagonal wrench to remove AF PCB unit (#B2163). 3 springs (#170) come off, too. #728 #636×3 AF PCB unit #B2163 AF PCB FPC #170×3 #709×2 Shutter unit Unsolder 7 wires. Take out the screw (#607 and #627) to detach the shutter unit (#B31). #B31 #607 #627 Pink Yellow Gray Purple White Orange Brown - 26 - VBA12001-R.3668.A Inner LCD unit Remove the sponge (#797 and #748). Take out 2 screws (#626) to remove the inner LCD unit (#B2010). #B2010 #626 × 2 #748 #797 Front body FPC unit Front body FPC unit: #B1009 #619 Soldering bridges Pink:V6 Yellow:A/M SW White:LBAT Black:A/M SW Soldering bridges AF PIFPC Black:AF motor Red:AF motor - 27 - VBA12001-R.3668.A Aperture control unit Procedure Unsolder 2 wires . Remove the screw (#661), spring (#214) and the lever (#254). Take out 3 screws (#642). Press down the aperture lever with Finger to move the aperture coupling lever (#207) in the direction of arrow( . In state of , remove the aperture control unit (#B241) by pulling it in the direction indicated by arrow ( ) while letting the arm (#B241) escape. Brown:Fmin SW Black:Fmin SW Front body viewed from the bottom #203 #B241 Aperture lever #B241 Arrow Arrow #642×3 #254 #214 #661 #207 Arm of #B241 - 28 - VBA12001-R.3668.A AF driving unit Lens release button Vertical lever Horizontal lever #642 #637×2 #621 #115 #119 First, remove the horizontal lever (#193). #B116 #191 #B172 #630 #122 #185 #195 #193 #630 Bayonet unit A/M-change SW unit #642 #126 #B125 Soldering bridge of #126 and #114 #123 #114 (5) #607 #B2113 #642×2 #189 #132 #135 #131 #607 #112×3 #111 #660 #648×5 - 29 - Aperture lever unit F-min Switch unit VBA12001-R.3668.A #190 #206 #203 #209 #207 #210 #208 #639 #375 #213 #212 #642 #134 #B133 #205 #375 Mirror unit #B2231 #234 Note that 2 pins (#199) and the pin (#236) are attached with the Super X.