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JVC GZ-MG255US Service Manual
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JVC GZ-MG255US Service Manual

JVC GZ-MG255US Service Manual

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SERVICE MANUAL
3 S ERVICE MANUAL
Everio
YF180
2007
COPYRIGHT© 2007 Victor Company of Japan, Limited
Lead free solder used in the board (material : Sn-Ag-Cu, melting point : 219 Centigrade)
1
PRECAUTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3
2
SPECIFIC SERVICE INSTRUCTIONS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5
3
DISASSEMBLY . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6
4
ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17
5
TROUBLE SHOOTING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-20
HARD DISK CAMCORDER
GZ-MG255US

TABLE OF CONTENTS

COPYRIGHT© 2007 Victor Company of Japan, Limited
GZ-MG255USM [M7E325]
No.YF180
2007/3

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Summary of Contents for JVC GZ-MG255US

  • Page 1: Table Of Contents

    HARD DISK CAMCORDER YF180 2007 3 S ERVICE MANUAL Everio GZ-MG255US GZ-MG255USM [M7E325] 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 PRECAUTIONS ............... 1-3 SPECIFIC SERVICE INSTRUCTIONS .
  • Page 2 SPECIFICATION Camcorder For General Power supply DC 11 V (Using AC Adapter) DC 7.2 V (Using battery pack) Power consumption Approx. 3.8 W Approx. 6.8 W (Maximum; when charging a battery) Dimensions (W × H × D) 66 mm × 71 mm × 110 mm (2-5/8" × 2-13/16" × 4-3/8") Weight Approx.

  • Page 3: Precautions

    SECTION 1 PRECAUTIONS SAFTY PRECAUTIONS Prior to shipment from the factory, JVC products are strictly emission. Consequently, when servicing these products, inspected to conform with the recognized product safety and replace the cathode ray tubes and other parts with only the electrical codes of the countries in which they are to be specified parts.
  • Page 4 1.1.2 Safety Check after Servicing Examine the area surrounding the repaired location for damage (4) Leakage current test or deterioration. Observe that screws, parts and wires have been Confirm specified or lower leakage current between earth returned to original positions, Afterwards, perform the following ground/power cord plug prongs and externally exposed tests and confirm the specified values in order to verify accessible parts (RF terminals, antenna terminals, video...

  • Page 5: Specific Service Instructions

    SECTION 2 SPECIFIC SERVICE INSTRUCTIONS Replacing HDD NOTE) After HDD replacement, format the HDD first. When the power is turned on after the HDD 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.

  • Page 6: Disassembly

    SECTION 3 DISASSEMBLY BEFORE ASSEMBLY AND DISASSEMBLY 3.1.1 Precautions 3.1.4 Tools required for disassembly and assembly • Be sure to disconnect the power supply unit prior to mounting Torque driver Tweezers and soldering of parts. YTU94088 YTU94088-003 P-895 • Prior to removing a component part that needs to disconnect its connector(s) and its screw(s), first disconnect the wire(s) from the connector(s), and then remove the screw(s).
  • Page 7 3.2.2 ASSEMBLY/DISASSEMBLY OF CABINET PARTS AND ELECTRICAL PARTS Disassembly procedure NOTE5: STEP Fig. PART NAME POINT NOTE When attaching, be sure to fit the two positioning studs in the holes. BOTTOM COVER ASSY 3-2-1 4(S1),L1a,3(L1b) NOTE1 NOTE8: GRIP BELT,2(S2a),2(S2b), HDD COVER ASSY 3-2-2 NOTE2 During the procedure, do not touch the terminals (elec-...
  • Page 8 NOTE3c HOLE SHIELD (HDD) (S1) NOTE3a,b (S1) STOPPER (S1) (S1) CONNECTOR HOLE NOTE3e LABEL COVER(SD) NOTE1 NOTE3d NOTE3f MAIN PWB <CROSS SECTION> Fig.3-2-1 Fig.3-2-3 (S4b) (S4a) (S4a) (S4a) (S4a) (S2b) HOOK (S2a) GRIP BELT NOTE2 (S2a) (S2b) Fig.3-2-2 Fig.3-2-4 1-8 (No.YF180)
  • Page 9 NOTE8 NOTE5 (S5) (S7b) WIRE (S7b) NOTE5 (S7b) NOTE5 HOLE (S7a) NOTE8 (S7a) (S8) Fig.3-2-5 Fig.3-2-7 NOTE9a (S6b) WIRE(MIC) (S9a) (S9b) (S6b) NOTE9 (S6b) (S6a) NOTE9b (S6b) (S9b) (S6b) (S9a) Fig.3-2-6 Fig.3-2-8 (No.YF180)1-9...
  • Page 10 L10a (S12) PLATE(MIC) NOTE12a [12] L10b [10] CN12 L12b (S10) NOTE10 L12a (S12) (S10) L12c NOTE12b Fig.3-2-9 Fig.3-2-11 (S13) (S13) [13] (S11) CN13b CN13a CN11 NOTE11a (S11) NOTE11b [11] (S11) NOTE11b (S11) Fig.3-2-10 Fig.3-2-12 1-10 (No.YF180)
  • Page 11 NOTE16a (S14) (S14) (S16) (S14) FPC(MONITOR) (S16) (S16) [14] [16] (S16) CN16a NOTE16a CN16b NOTE16c SW(LCD_OPEN) NOTE16b L16b L16a Fig.3-2-13 Fig.3-2-15-1 (S15) 42 (S15) (S15) [15] NOTE15a,b WIRE(SPEAKER) NOTE16c 0.118 N m (1.2kgf cm) Fig.3-2-14 Fig.3-2-15-2 (No.YF180)1-11...
  • Page 12 SPACER (S18) (S18) (S17) (S17) BKT(SPEAKER) [18] NOTE18 NOTE17 [17] L17a L17b L17c 0.198 N m (2.0kgf cm) Fig.3-2-16-1 Fig.3-2-17 SPACER WIRE(SPEAKER) Fig.3-2-16-2 1-12 (No.YF180)
  • Page 13 3.2.3 ASSEMBLY/DISASSEMBLY OF [9] FRONT ASSY CAUTIONS (1) As the FRONT ASSY has complicated structure, do not Assembly procedure disassemble if not needed. (1) Attach the BARRIER (B). (2) After reassembling, check the smooth slide operation of NOTE9c: the two BARRIERS. Be careful with the attachment direction.
  • Page 14 3.2.4 DISASSEMBLY OF [18] MONITOR ASSY CAUTIONS (1) During the procedure, be careful in handling the LCD Removing HINGE UNIT ASSY MODULE and other parts. Pay special attention not to (1) Remove the screw (7), and Remove the HINGE COV- damage or stain the monitor screen.
  • Page 15 L18d 0.069 N m (0.7kgf cm) MONI.COVER ASSY 0.198 N m (2.0kgf cm) NOTE18a L18c (S18b) L18b NOTE18d L18a (S18b) KNOB MONITOR (CURSOR) HINGE UNIT ASSY BOARD (S18a) NOTE18b ASSY (S18a) L18e CN18a MONI CASE (S18a) CN18b L18f (S18a) NOTE18d MONITOR NOTE18j,k BOARD...
  • Page 16 3.2.5 DISASSEMBLY OF [15] OP BLOCK ASSY/CCD BOARD ASSY Precautions hold the side of the CCD BOARD ASSY to prevent (1) Be careful in handling the CCD IMAGE SENSOR, OPTICAL part detachment. LPF and the LENS components. NOTE15c: Pay special attention to the surfaces to protect them from Replace the CCD IMAGE SENSOR as a CCD BASE stains, dust, or scratches.

  • Page 17: Adjustment

    SECTION 4 ADJUSTMENT PREPARATION 4.1.3 TOOLS REQUIRED FOR ADJUSTMENT 4.1.1 Precaution Torque Driver Tweezers YTU94088 YTU94088-003 P-895 Camera system and deck system of this model are specially adjusted by using PC. However, if parts such as the following are replaced, an adjustment is required.
  • Page 18 • INF Adjustment Lens JIG CONNECTOR CABLE CONNECTION To be used for adjustment of the camera system. For the Connection procedure usage of the INF adjustment lens, refer to the Service Bulletin NOTE No. YA-SB-10035. • Be sure to turn the power “OFF”, when connecting the JIG •...
  • Page 19 Jig connector diagrams JIG CONNECTOR CABLE (YTU93106D) JIG CONN. BOARD MAIN CN110 (PIN NO.) DSP_TDO DSP_TDO DSP_TCK DSP_TMS DSP_TMS XDSPTRST DSP_TDI REG_3.1V XDSPTRST UATXDO DSP_RST IF_TX REG_3.1V MOD0 UARXDO SYS_TCK UATXDO SYS_TRSTL AL_3VSYS SYS_TDO IF_TX SYS_TDI IF_RX SYS_TMS MOD0 JSEL1 SYS_RSTL SYS_TCK MON_G...

  • Page 20: Trouble Shooting

    SECTION 5 TROUBLE SHOOTING SERVICE NOTE 1-20 (No.YF180)
  • Page 21 Victor company of Japan, Limited Camcorder Category 12, 3-chome, Moriya-cho, Kanagawa-ku, Yokohama-city, Kanagawa-prefecture, 221-8528, Japan (No.YF180) Printed in Japan...