JVC GZ-MG255US Service Manual Download

Page: 21 / 21

(No.YF180)

VPT

Printed in Japan

Victor company of Japan, Limited
Camcorder Category 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan

Summary of Contents for GZ-MG255US

Page 1: ...SERVICE MANUAL Everio GZ MG255US COPYRIGHT 2007 Victor Company of Japan Limited Lead free solder used in the board material Sn Ag Cu melting point 219 Centigrade TABLE OF CONTENTS 1 PRECAUTIONS 1 3 2 SPECIFIC SERVICE INSTRUCTIONS 1 5 3 DISASSEMBLY 1 6 4 ADJUSTMENT 1 17 5 TROUBLE SHOOTING 1 20 GZ MG255USM M7E325 ...

Page 2: ...dard Recording mode video ULTRA FINE 720 480 pixels 8 5 Mbps VBR FINE 720 480 pixels 5 5 Mbps VBR NORMAL 720 480 pixels 4 2 Mbps VBR ECONOMY 352 240 pixels 1 5 Mbps VBR Recording mode audio ULTRA FINE 48 kHz 384 kbps FINE 48 kHz 384 kbps NORMAL 48 kHz 256 kbps ECONOMY 48 kHz 128 kbps For Still image Format JPEG Image size 6 mode 1632 1224 1280 960 1024 768 640 480 1632 912 1280 720 Picture quality...

Page 3: ...rts 9 When a power cord has been replaced check that 10 15 kg of force in any direction will not loosen it Fig 1 1 2 10 Also check areas surrounding repaired locations 11 Products using cathode ray tubes CRTs In regard to such products the cathode ray tubes themselves the high voltage circuits and related circuits are specified for compliance with recognized codes pertaining to X ray emission Cons...

Page 4: ...g prongs and externally exposed accessible parts Use an AC voltmeter to measure across both terminals of load Z See Fig 1 1 9 and following Fig 1 1 12 Fig 1 1 9 5 Grounding Class 1 model only Confirm specified or lower grounding impedance between earth pin in AC inlet and externally exposed accessible parts Video in Video out Audio in Audio out or Fixing screw etc Measuring Method Connect milli oh...

Page 5: ...replacement the below Warning screen is displayed Be sure to format the HDD following the messages Be sure to turn off the power once after the formatting If the HDD recording is started without being turned off the power normal recording cannot be performed although the re cording will start 0 61 14 6 4 5 4 8 1 17 9 06 61 14 6 6 9 4 5 㪜㪯㪜㪚㪬㪫㪜㪚㪘㪥㪚㪜㪣㪪㪜㪣㪜㪚㪫㪪㪜㪫 ...

Page 6: ...he identification location No of parts Figures 2 Part to be removed or installed 3 Fig No showing Procedure or Part Location 4 Identification of part to be removed unhooked unlocked released unplugged unclamped or unsoldered S Screw L Lock Release Hook SD Solder CN Connector Example 4 S1a Remove 4 S1a screws 3 L1a Disengage 3 L1a hooks 2 SD1a Unsolder 2 SD1a points CN1a Remove a CN1a connector 5 A...

Page 7: ...nector lock and then pull out the FPC together with the UPPER ASSY NOTE12a During the procedure be careful to avoid electric shock NOTE12b When removing be careful not to break the parts as the hooks behind the STROBE ASSY make removal difficult NOTE15a During the procedure be careful in handling the parts NOTE15b Refer to 3 2 5 DISASSEMBLY OF 15 OP BLOCK ASSY CCD BOARD ASSY of OP BLOCK ASSY NOTE1...

Page 8: ... 2 S1 3 S1 4 S1 L1a L1b NOTE1 COVER SD GRIP BELT HOOK 6 S2a 7 S2b 8 S2b L2d L2c L2b L2a 5 S2a 2 NOTE2 HOLE HOLE CONNECTOR SHIELD HDD FPC HDD MAIN PWB LABEL STOPPER NOTE3c NOTE3f FPC CN3 NOTE3a b NOTE3e NOTE3d 3 CROSS SECTION 4 10 S4a 9 S4a 11 S4a 13 S4b 12 S4a ...

Page 9: ... L5a L5b L5d HOLE L5c L5c CN5 14 S5 5 NOTE5 NOTE5 NOTE5 19 S6b 19 S6b 16 S6b 15 S6a 18 S6b 17 S6b 6 6 L6 L6 WIRE 7 8 NOTE8 NOTE8 L8 L7b L7a CN8 21 S7b 20 S7a 20 S7a 24 S8 22 S7b 23 S7b 25 S9a 25 S9a 26 S9b L9a L9b CN9 WIRE MIC 27 S9b 9 NOTE9 NOTE9a NOTE9b ...

Page 10: ...9 Fig 3 2 10 Fig 3 2 11 Fig 3 2 12 NOTE10 10 28 S10 29 S10 PLATE MIC L10a L10b 11 CN11 L11 31 S11 30 S11 30 S11 32 S11 NOTE11b NOTE11b NOTE11a CN12 L12b L12c L12a 12 33 S12 NOTE12b NOTE12a 34 S12 CN13a CN13b 13 35 S13 36 S13 ...

Page 11: ... 15 1 Fig 3 2 15 2 38 S14 37 S14 39 S14 14 41 S15 42 S15 L15 15 NOTE15a b 0 118 N m 1 2kgf cm 40 S15 FPC MONITOR L16a a a a a L16b 43 S16 44 S16 45 S16 46 S16 CN16b b b b b CN16a NOTE16a NOTE16a NOTE16c SW LCD_OPEN NOTE16b 16 NOTE16c WIRE SPEAKER ...

Page 12: ...1 12 No YF180 Fig 3 2 16 1 Fig 3 2 16 2 Fig 3 2 17 BKT SPEAKER SPACER 17 47 S17 48 S17 L17a L17b L17c NOTE17 NOTE17 WIRE SPEAKER SPACER 0 198 N m 2 0kgf cm 18 49 S18 50 S18 L18 NOTE18 ...

Page 13: ...ection Attach the BARRIER B with its wrinkle side facing outside 2 With the ARM assembled attach the BARRIER A by fit ting the ARM BOSS into the COVER ASSY hole 3 Attach the KNOB 4 Attach the SLIDER NOTE9d Attach the SLIDER by placing the KNOB hole and the ARM BOSS parallel as shown in the figure 5 Attach the BASE BARRIER check if there is no uplift or unevenness and then tighten with the two scre...

Page 14: ... may be uplifted or misaligned when the COVER is re moved NOTE18d When attaching the MONITOR BOARD ASSY be careful to avoid any misalignment or unevenness of the parts underneath Attach the MONITOR BOARD ASSY by lifting up the MONITOR CASE as the KNOB CURSOR that is at tached to the BOARD sticks out toward the LCD screen 7 Remove the SHEET M REF LIGHT GUIDE SHEET M DIFF SHEET BEF 2 and the SHEET B...

Page 15: ...NI CASE MONI COVER ASSY BOARD ASSY MAGNET FPC KNOB HINGE COVER L HINGE COVER U HINGE UNIT ASSY CURSOR MONITOR BOARD MONITOR 7 S18c 3 S18b 2 S18a 1 S18a 5 S18a 6 S18a 4 S18b L18g L18h L18j L18m L18k L18a L18b L18c L18d L18e CN18a CN18b CN18b L18f NOTE18g NOTE18b NOTE18f NOTE18d NOTE18e NOTE18d NOTE18a NOTE18e NOTE18a c NOTE18f NOTE18f NOTE18h NOTE18j k 0 069 N m 0 7kgf cm 0 198 N m 2 0kgf cm ...

Page 16: ... the side of the CCD BOARD ASSY to prevent part detachment NOTE15c Replace the CCD IMAGE SENSOR as a CCD BASE ASSY not as a single part replacement 3 Remove the SHEET and the OP LPF 4 Remove the SHIELD from the SHIELD CCD 1 ASSY unsolder the 24 soldered points SD15a on the CCD BOARD ASSY and then remove the CCD BASE ASSY and the SHIELD CCD 1 ASSY 5 Remove the two screws 5 6 and then remove the CCD...

Page 17: ...olor TV monitor Oscilloscope dual trace type observable 100MHz or higher frequency The one observable 300 MHz or higher frequency is recommended Digital voltmeter DC power supply or AC adapter Frequency counter with threshold level adjuster 4 1 3 TOOLS REQUIRED FOR ADJUSTMENT Torque Driver Be sure to use to fastening the mechanism and exterior parts because those parts must strictly be controlled ...

Page 18: ...stment of the camera system For the usage of the INF adjustment lens refer to the Service Bulletin No YA SB 10035 Service Support System To be used for adjustment with a personal computer Software can be downloaded also from JS net Communication Cable Connect the Communication cable between the PC cable and Jig connector cable when performing a PC adjustment PC Cable To be used to connect the Vide...

Page 19: ...O GND KENTO2 DSP_TDO DSP_TMS XDSPTRST REG_3 1V UATXDO IF_TX MOD0 SYS_TCK SYS_TRSTL SYS_TDO SYS_TDI SYS_TMS JSEL1 MVD GND DSP_TCK DSP_TDI DSP_RST UARXDO AL_3VSYS IF_RX SYS_RSTL MON_G GND GND IRU JSEL0 EXTRGO KENTO KENTO2 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 JIG CONNECTOR CABL...

Page 20: ...screw Place to stick screw Reference drawing Fig No Screw tightening torque CABINET PARTS AND ELECTRICAL PARTS 1 9 FRONT ASSY 18 MONITOR ASSY CABINET PARTS AND ELECTRICAL PARTS 2 NOTE 㧝㧖and㧖㧖 This mark shows where to attach the screws Do not reuse the screws because the screw lock bond was applied to prevent the screws from loosening Prepare the specified screws and use them in place of the remo...

Page 21: ... No YF180 VPT Printed in Japan Victor company of Japan Limited Camcorder Category 12 3 chome Moriya cho Kanagawa ku Yokohama city Kanagawa prefecture 221 8528 Japan ...

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