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No. 8304E VK-U174 VK-U174E SERVICE MANUAL SPECIFICATIONS AND PARTS ARE SUBJECT TO CHANGE FOR IMPROVEMENT COLOR VIDEO CAMERA October 2003 Digital Media Division,Tokai...
The use of a substitute replacement component which does not have the same safety characteristics as the HITACHI recommended replacement one, shown in the parts list in this Service Manual, may create shock, fire, or other hazards. Product safety is continuously under review and new instructions are issued from time to time.
Safety Precaution for Repair > Lead-Free Solder 1-3 Lead-Free Solder The printed circuit board that uses lead-free solder is adopted. To protect the global environment, use the recommended lead-free solder also during servicing. Read and observe the following before soldering: Caution ALWAYS wear protective goggles during soldering so that no solder smoke or scattered solder enters the eye.
Safety Precaution for Repair > Lead-Free Solder / Notes When Using Service Manual (5) Cautions when using lead based solder It is recommended that you use lead-free solder when servicing, but it is also possible to service using lead based solder. However, if lead based solder is used for servicing, take care with the following: 1) Before using lead based solder, remove the lead-free solder completely from the point to be soldered.
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Safety Precaution for Repair > Notes When Using Service Manual (3) Identifications of sides A/B in circuit board diagrams 1) Board with a pattern on one side and parts on both sides: Side A: Shows discrete parts, viewed from the pattern side. Side B: Shows leadless parts, viewed from the pattern side.
General Description 2-1 Overview VK-U174/U174E is a newly developed, high-performance, compact chassis video camera with an optical 10-power zoom lens. A 1/4-inch CCD is used for image sensor, and a digital signal processor (DSP6) is the main component of the signal processing circuit.
General Description > Features 2-2 Features VK-U174/U174E Compact and lightweight VK-S274R/S274ER Since a compact zoom lens is used and the density of parts mounted on circuit boards is thereby increased, the volume and weight of camera body can be reduced to approx. 28% and approx.
General Description > Specifications 2-3 Specifications The specifications in shaded columns are different from those of previous models. Design and specifications are subject to change without notice. Item VK-U174/U174E Signal Format VK-U174: NTSC VK-U174E: PAL Scanning System 2:1 Interlacing Scanning...
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General Description > Specifications Item VK-U174/U174E Horizontal Resolution VK-U174: More than 470 TV lines VK-U174E: More than 460 TV lines Luminance S/N Ratio More than 50dB Sensitivity Pro-AE mode (1/60s or 1/50s, 1.0 lx F1.8, AGC gain: 32.0dB) Pro-AE+* mode (1/4s or 1/3s) 0.1 lx...
General Description > Comparison from Previous Models 2-4 Comparison from Previous Models : Same as on left Item VK-U174/U174E VK-S274R/S274ER Image Sensor 1/4-inch CCD Total Pixels VK-U174: 811 (H) × 805 (V), VK-S274R: 410k VK-U174E: 795 (H) × 596 (V),...
General Description > Comparison of Main Control ICs 2-5 Comparison of Main Control ICs : Same as on left Item VK-U174/U174E VK-S274R/S274ER Image Sensor VK-U174: ICX278AK-L (IC1001) VK-S274R: (IC1001) VK-U174E: ICX279AK-L (IC1001) VK-S274ER: (IC1001) Sensor Drive µPD16510GR (IC1002) (IC1002) CDS AGC & A/D Conv.
General Description > List of Abbreviations and Terms for Surveillance System 2-6 List of Abbreviations and Terms for Surveillance System Abbreviation/ Index Explanation Term ANSI American National Standard Institute: This organization establishes industrial product specifications for US. AT Attachment interface: Formal standard of IDE standardized by ANSI. ATA card A kind of PC card.
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General Description > List of Abbreviations and Terms for Surveillance System Abbreviation/ Index Explanation Term Local Area Network: A network within a limited area, such as in company or school. MPEG Moving Picture Experts Group: Standard related to compression of video (movie) and audio.
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Explanation Term Wide Dynamic Range: The Hitachi wide dynamic range technique lets a video camera with progressive scan CCD record an image at a shutter speed suitable for brighter object and another image at a shutter speed suitable for darker object. It then synthesizes the two images, thereby reproducing a clear picture.
Description of Operation 3-1 Structure Schematics 4-M2 SCREWS (These screws are limit of height keep as being less than 2mm for 'C' ) 54mm M2 SCREWS (These screws 34.6mm 52mm are limit of height 16.1mm 18.5mm keep as being less than 2mm for 'C' ) 4-M2 SCREWS (These screws are limit of height...
Description of Operation > Microprocessor Pin Function Table 3-2 Microprocessor Pin Function Table 3-2-1 Camera microprocessor (IC2507: Camera µP) Active Abbreviation Function Level LD-DSP Pulse Activates data communication with IC2502 (CAMERA DSP). 4800ST ----- ----- Not used. Open. ----- ----- GYRO-RST ----- -----...
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Description of Operation > Microprocessor Pin Function Table Active Abbreviation Function Level FCUS-SEN Pulse Focus motor position detection input. ----- ----- Not used. Open. ZOOM-SEN Pulse Zoom motor position detection input. GND2 ----- ----- Ground. HALL-ADJ1 0V-3V Controls the offset voltage of IC4101 (F-DET). HALL-ADJ0 0V-3V Controls the bias voltage of the Hall devices via Q4101 (BIAS GEN.)
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Description of Operation > Microprocessor Pin Function Table Active Abbreviation Function Level NC16 ----- ----- Not used. Open. NC17 ----- ----- Pulse For data communications with IC2052 (CAMERA DSP), IC2303 Pulse (EEPROM1), IC2304 (EEPROM2). SCLK Pulse NC18 ----- ----- Not used. Open. NC19 ----- -----...
Troubleshooting 4-1 Trouble Diagnosis 4-1-1 Setting to service position Remove bracket R and bracket L, referring to “5. Disassembly and Reassembly”, and connect the camera as shown in Fig. 4-1-1. Note: To prevent short-circuit, always perform trouble diagnosis of camera on insulated mat. PC CIRCUIT BOARD CSR CIRCUIT...
Troubleshooting > Trouble Diagnosis 4-1-2 Trouble diagnosis flowchart (1) No video (luminance) signal Circuit No. Circuit Board 1000 to 1099 TL3005 or TL2501 : Refer to "(3) No power" 1100 to 2999 3000 and higher TL3006 or TL4006 : Refer to "(3) No power" TL3007 or TL1212 : Refer to "(3) No power"...
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Troubleshooting > Trouble Diagnosis TL1017, 1018, TL1001, 1002, 1007 IC2052 faulty or connect 1020, 1021 : or TL2016, 2015, the connections of circuit Pulses 2010 : Pulses boards.. [Continued from preceding page] TL1003 to 1006 or IC2052 faulty or connect TL2011 to 2014 : the connections of circuit Pulses...
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Troubleshooting > Trouble Diagnosis (3) No power Check fuse Circuit No. Circuit Board Fuse replacement (F3501) 1000 to 1099 1100 to 2999 3000 and higher TL3511 : 9V (+B) D3007 or C3501 faulty TL3005 or TL2501 : IC3001-44 : 8V IC3001 faulty Q4105 faulty TL3006 or TL4006 :...
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Troubleshooting > Trouble Diagnosis (4) No zoom and focus operation Circuit No. Circuit Board 1000 to 1099 IC3002 faulty TL4023 : 6V 1100 to 2999 3000 and higher Check the When power turned Correct the connections of the on: TL4021 or connections lens flat cable.
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Troubleshooting > Trouble Diagnosis (5) No focus lens operation Circuit No. Circuit Board 1000 to 1099 Does zoom See "(4)No zoom and 1100 to 2999 operate focus operation." normally? 3000 and higher C h e c k t h e W h e n p o w e r t u r n e d C o r r e c t t h e c o n n e c t i o n s o f t h e...
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Troubleshooting > Trouble Diagnosis (6) Subject is greatly out-of-focus when zoomed Circuit No. Circuit Board Check the Zoom 1000 to 1099 Zoom switch faulty. switch unit. 1100 to 2999 3000 and higher D2502 faulty. IC2507-49 : C2523 faulty. 1.2-1.6V R2546 faulty. Note: For the item marked #, perform all the adjustments required when the Data Initialize and...
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Troubleshooting > Trouble Diagnosis (8) No auto focus operation Does zoom See "(4) No zoom and operate focus operation." Circuit No. Circuit Board normally? 1000 to 1099 1100 to 2999 3000 and higher Connect an oscilloscope to video output Increase the VIDEO SIGNAL: Does the video Camera circuit faulty.
R Bracket Note: 4) to 7) CSR Circuit Board When replacing components in the VK-U174/U174E, be sure to use only those shown in "Replacement Parts List". 8) and 9) Circuit Board Frame Reading Disassembly Flowchart:...
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Disassembly and Reassembly > Disassembly CSR Circuit Board (Fig. 5-2-2) 4) Remove three screws [B]. 5) Move the bottom of PC circuit board in the direction of the arrow to release the connections with CSR circuit board (connections of PG2002 and PG3001). 6) Remove two screws [B].
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Disassembly and Reassembly > Disassembly Camera Frame and PC Circuit Board (Fig. 5-2-4) 10) Remove two screws [C]. 11) Disconnect flat cable from the PC and SP circuit boards. 10) SCREWS [C] [C] M1.7×2(Black) CAMERA FRAME PC CIRCUIT BOARD 11) FLAT CABLE SP CIRCUIT BOARD Fig.
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Be careful not damage and lost SENSOR [E] M1.7×5 them. (Silver) Procedure and caution for reassembly The crystal filter used in VK-U174/U174E WITHOUT COLOR has a fixed orientation: Set it so that the RUBBER plane without color is in contact with the...
Adjustment 6-1 Preparations for Adjustment All adjustments are performed using the adjustment program (ZMAP: Zoom camera Manual Adjustment Program) and personal computer (PC). If error message appears during adjustment, refer to "6-8 Error Messages and Countermeasure". 6-1-1 List of equipment and jigs DSP Interface Connect DSP-R Jig C12 Light Balancing...
Adjustment > Preparations for Adjustment 6-1-3 Connections for adjustment Connect the video camera to the test equipment and jigs as shown in Fig. 6-1-1 30 - 50cm CSR CIRCUIT BOARD 9PIN FLAT CABLE LIGHT VECTORSCOPE (ACCESSORY) PC CIRCUIT PG3501 BOARD OUTPUT INPUT DSP INTERFACE...
Adjustment > Preparations for Adjustment 6-1-4 Setting test equipment (1) Oscilloscope The names of switches, knobs, modes, etc. of oscilloscope may vary slightly depending on the manufacturer or model. Since some oscilloscopes may have switches, etc. other than the above that must be set, see the instruction manual of the particular oscilloscope for details.
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Adjustment > Preparations for Adjustment 7) The ZMAP will start: Make sure that the model select (Continued from preceding page) screen appears on the PC display. (See the model select Model select screen screen) *********************************************************** If the model select screen does not appear, make sure of MODEL SELECT *********************************************************** the following:...
Adjustment > List of Adjustment Items 6-2 List of Adjustment Items 6-2-1 List of adjustments needed after replacing major The following table shows the adjustment items, their purposes, and whether or not check is required after replacing major components. The components shown in the table below are the minimum to be checked after replacing major components: If several components have been replaced - or depending on the cause of a defect more components may need to be checked.
Adjustment > List of Adjustment Items 6-2-2 Adjustment flowchart Main menu *********************************************************** MANUAL ADJUSTMENT PROGRAM *********************************************************** DATA INITIALIZE ELECTRIC VOLUME ADJUSTMENT AUTO FOCUS SPOT NOISE [ESC] END Please select [A] - [E] or [ESC] Input: A Input: B Input: C Data initialize Electrical volume Adjustment...
Adjustment > Data Initialize / Electronic Volume 6-3 Data Initialize Restriction: 1) This procedure initializes the adjustment data in EEPROM (including the adjustment data). Any time you replace the EEPROM, be sure to perform this procedure. Generally, this procedure is not necessary after replacing other components. 2) After completing this adjustment, be sure to perform all adjustment items as follows.
Adjustment > Electronic Volume / Adjustment (Camera Adjustment) 6-4-1 CDS sampling pulse adjustment Electronic volume menu *********************************************************** Incompleted Phenomenon ELECTRIC VOLUME Diagonal beats and horizontal noise occur. *********************************************************** CDS SAMPLING PULSE Condition: [ESC] RETURN TO MAIN MENU Please select [1] or [ESC] Leave the video camera for more than 2 minutes until the circuits are stabilized after turning it on, then start Input 1.
Adjustment > Adjustment (Camera Adjustment) 6-5-1 Auto iris control adjustment Adjustment menu Incompleted Phenomenon *********************************************************** 1) The picture becomes too bright. ADJUSTMENT *********************************************************** 2) The picture becomes too dark. AUTO IRIS CONTROL WHITE BALANCE Condition CHROMA GAIN [ESC] RETURN TO MAIN MENU Set point at the light box, without chart inserted, to fill the Please select [1] - [3] or [ESC] screen.
Adjustment > Auto Focus 6-6 Auto Focus Main menu *********************************************************** Input D to PC on the main menu screen to display the AF MANUAL ADJUSTMENT PROGRAM *********************************************************** menu screen. Input the appropriate adjustment number to DATA INITIALIZE PC. Pressing the Esc key on the AF menu screen will restore ELECTRIC VOLUME ADJUSTMENT the main menu screen.
Adjustment > Auto Focus 6-6-2 AF noise level adjustment AF menu Incompleted Phenomenon *********************************************************** AUTO FOCUS ADJUSTMENT 1) It takes time until a subject is brought into focus. *********************************************************** ADJUSTMENT OF ZOOM/FOCUS TRACKING 2) Correct focus is not obtained. ADJUSTMENT OF AF NOISE LEVEL CHECK OF ZOOM/FOCUS TRACE Condition [ESC] RETURN TO MENU...
Adjustment > Spot Noise 6-7 Spot Noise Spot noise refers to bright points that appear on the screen, Main menu *********************************************************** which are caused by a defect in pixel of image sensor. MANUAL ADJUSTMENT PROGRAM *********************************************************** DATA INITIALIZE Note: ELECTRIC VOLUME ADJUSTMENT 1) Perform this adjustment after specified components have AUTO FOCUS...
Adjustment > Error Messages and Countermeasure 6-8 Error Messages and Countermeasure A message may appear while you are adjusting the video camera. If a message appears, refer to the following table and take appropriate corrective action. (1) When adjusting the electric volume and adjustment Error Messages Countermeasure CAN'T ADJUST WHITE BALANCE...
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Adjustment > Error Messages and Countermeasure Error Messages Countermeasure TOO BRIGHT 1) The subject is too bright. PRESS ANY KEY 2) Move the camera further away from the light box. TOO DARK 1) The subject is too dark. PRESS ANY KEY 2) Check the light box.
Exploded View and Parts List 7-1 Exploded View Note: Components without any numbers in exploded views had not been assigned as service parts as of the date of issue of this manual. SP CIRCUIT BOARD [Component Replacement] PC CIRCUIT BOARD [Component Replacement or Circuit Board Assembly Replacement (Order Format)]...
2 Schematic Diagrams 2-1 SP Schematic Diagram -6.7 -6.7 15.1 10.4 10.0 IC1001 U174:ICX278AK-L U174E:ICX279AK-L IMAGE SENSOR -6.7 29.8 PG2001 16.6 11.5 -0.2 -0.2 CODE PART NAME U174 U174E 2SC2620-QC IC1001 ICX278AK-L ICX279AK-L 1SS353 NOTE:VOLTAGES ARE MEASURED WHEN CAMERA IS POINTED AT THE COLOR BAR CHART.
3-4 Identification of Parts Location Symbol Parts Symbol Parts Symbol Parts Symbol Parts Symbol Parts Symbol Parts Symbol Parts Symbol Parts Symbol Parts Symbol Parts Symbol Parts Symbol Parts Symbol Parts Symbol Parts Symbol Parts Symbol Parts Symbol Parts Symbol Parts Location Location...