MODEL NUMBER LCD MONITOR REMOTE CONTROL UNIT BATTERY (for REMOTE CONTROL UNIT) DIGITAL INTERFACE ANALOG INPUT DSC FLASH MEMORY(MEMORY CARD) EDITING CABLE USB CAULE MEMORY CARD CD-ROM EDITING CABLE USB GR-D30UB 2.5 INCH NO NO NO NO NO NO NO NO NO NO NO GR-D30US 2.5 INCH NO NO NO NO NO NO NO NO NO NO NO GR-D31US 3.5 INCH NO NO NO NO NO NO NO NO NO NO NO GR-D70US 2.5 INCH RM-V718U CR2025 USB YES YES (CARD Slot only) NO NO NO YES NO YES GR-D90UB 3.5 INCH NO NO USB YES YES (MMC 8MB) NO YES YES (MMC 8MB) YES NO YES GR-D90US 3.5 INCH RM-V718U CR2025 USB YES YES (MMC 8MB) NO YES YES (MMC 8MB) YES NO YES GR-D91US 3.5 INCH RM-V717U AAA x2 USB YES YES (MMC 8MB) YES YES YES (MMC 8MB) YES YES YES
1
1-2 (No.86722)
SECTION 1 PRECAUTIONS
1.1 SAFTY PRECAUTIONS Prior to shipment from the factory, JVC products are strictly inspected to conform with the recognized product safety and electrical codes of the countries in which they are to be sold.However,in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced. 1.1.1 Precautions during Servicing (1) Locations requiring special caution are denoted by labels and inscriptions on the cabinet, chassis and certain parts of the product.When performing service, be sure to read and comply with these and other cautionary notices appearing in the operation and service manuals. (2) Parts identified by the symbol and shaded ( ) parts are critical for safety. Replace only with specified part numbers. NOTE : Parts in this category also include those specified to comply with X-ray emission standards for products using cathode ray tubes and those specified for compliance with various regulations regarding spurious radiation emission. (3) Fuse replacement caution notice. Caution for continued protection against fire hazard. Replace only with same type and rated fuse(s) as specified. (4) Use specified internal wiring. Note especially: · Wires covered with PVC tubing · Double insulated wires · High voltage leads (5) Use specified insulating materials for hazardous live parts. Note especially: · Insulation Tape · PVC tubing · Spacers · Insulation sheets for transistors · Barrier (6) When replacing AC primary side components (transformers, power cords, noise blocking capacitors, etc.) wrap ends of wires securely about the terminals before soldering. quently, when servicing these products, replace the cathode ray tubes and other parts with only the specified parts. Under no circumstances attempt to modify these circuits.Unauthorized modification can increase the high voltage value and cause X-ray emission from the cathode ray tube. (12) Crimp type wire connector In such cases as when replacing the power transformer in sets where the connections between the power cord and power trans former primary lead wires are performed using crimp type connectors, if replacing the connectors is unavoidable, in order to prevent safety hazards, perform carefully and precisely according to the following steps. · Connector part number :E03830-001 · Required tool : Connector crimping tool of the proper type which will not damage insulated parts. · Replacement procedure a) Remove the old connector by cutting the wires at a point close to the connector. Important : Do not reuse a connector (discard it).
cut close to connector
Fig.1-1-3 b) Strip about 15 mm of the insulation from the ends of the wires. If the wires are stranded, twist the strands to avoid frayed conductors.
15 mm
Fig.1-1-4 c) Align the lengths of the wires to be connected. Insert the wires fully into the connector.
Metal sleeve
Connector
Fig.1-1-1 (7) Observe that wires do not contact heat producing parts (heatsinks, oxide metal film resistors, fusible resistors, etc.) (8) Check that replaced wires do not contact sharp edged or pointed parts. (9) When a power cord has been replaced, check that 10-15 kg of force in any direction will not loosen it.
Fig.1-1-5 d) As shown in Fig.1-1-6, use the crimping tool to crimp the metal sleeve at the center position. Be sure to crimp fully to the complete closure of the tool.
1.2 5 2.0 5.5
Crimping tool
Power cord
Fig.1-1-6 e) Check the four points noted in Fig.1-1-7.
Not easily pulled free Crimped at approx. center of metal sleeve
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. Conse-
Conductors extended Wire insulation recessed more than 4 mm
Fig.1-1-7
(No.86722)1-3
1.1.2 Safety Check after Servicing Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions, Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards. (1) Insulation resistance test Confirm the specified insulation resistance or greater between power cord plug prongs and externally exposed parts of the set (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.). See table 1 below. (2) Dielectric strength test Confirm specified dielectric strength or greater between power cord plug prongs and exposed accessible parts of the set (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.). See Fig.1-1-11 below. (3) Clearance distance When replacing primary circuit components, confirm specified clearance distance (d), (d') between soldered terminals, and between terminals and surrounding metallic parts. See Fig.1-1-11 below.
(4) Leakage current test Confirm specified or lower leakage current between earth ground/power cord plug prongs and externally exposed accessible parts (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.). Measuring Method : (Power ON) Insert load Z between earth ground/power cord plug 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.
a b c
Externally exposed accessible part
Z V
A
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 ohm meter between earth pin in AC inlet and exposed accessible parts. See Fig.1-1-10 and grounding specifications.
Fig.1-1-8
Fig.1-1-10
Fig.1-1-11
Fig.1-1-12 NOTE : These tables are unofficial and for reference only. Be sure to confirm the precise values for your particular country and locality.
1-4 (No.86722)
SECTION 2 SPECIFIC SERVICE INSTRUCTIONS
2.1 BEFORE ASSEMBLY AND DISASSEMBLY 2.1.1 Precautions 1. Be sure to disconnect the power supply unit prior to mounting and soldering of parts. 2. 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). 3. When connecting/disconnecting wires, pay enough attention not to damage the connectors. 4. Be careful in removing or handling the part to which some spacer or shield is attached for reinforcement or insulation. 5. When replacing chip parts (especially IC parts), first remove the solder completely to prevent peeling of the pattern. 6. Tighten screws properly during the procedures. Unless specified otherwise, tighten screws at a torque of 0.088N·m (0.9kgf·cm). 2.1.2 Assembly and disassembly 2.1.4 Disconnection of connectors (Wires) Pull both ends of the connector in the arrow direction, remove the lock and disconnect the flat wire.
Flat wire
Connector
Fig.2-1-1 Extend the locks in the direction of the arrow for unlocking and then pull out the wire. After removing the wire, immediately restore the locks to their original positions because the locks are apt to come off the connector.
[Example]
STEP No. [1] [2] PART TOP COVER ASSEMBLY UPPER ASSEMBLY (Inc. VF ASSEMBLY, SPEAKER/MONITOR) VF ASSEMBLY Fig. No. POINT NOTE -
[8]
Fig.C1 S1,2(L1) Fig.C2-1 S2a,2(S2b),3(S2c) 2(S2d),S2e,S2c L2,CN2a,b Fig.C2-2 2(S8),L8,CN8a
Flat wire
NOTE 8a NOTE 8b
(1)
(2)
(3)
(4)
(5)
(1) Order of steps in Procedure When reassembling, preform the step(s) in the reverse order. These numbers are also used as the identification (location) No. of parts Figures. (2) Part to be removed or installed. (3) Fig. No. showing Procedure or Part Location. C D = CABINET = CAMERA AND BOARD ASSEMBLY
Connector
Fig.2-1-2 2.1.5 Tools required for disassembly and assembly
1
Torque driver YTU94088
2
Bit YTU94088-003
(4) Identification of part to be removed, unhooked, unlocked, released, unplugged, unclamped or unsoldered. P W S * 2(S3) CN = Spring = Washer = Screw = Unhook, unlock, release, unplug or unsolder. = 2 Screws (S3) = Connector
Tweezers P-895 Chip IC replacement jig PTS40844-2
3
4
(5) Adjustment information for installation. 2.1.3 Destination of connectors
Two kinds of double-arrows in connection tables respectively show kinds of connector/wires. : Flat wire : Wire [Example]
CONN. No. CN2a CN2b MAIN MAIN CN101 CN103 CONNECTOR MONIBW MINIBW CN761 CN762 Pin No. 40 10
5
Cleaning cloth KSMM-01
Fig.2-1-3
Remove the parts marked in
.
(No.86722)1-5
1.Torque driver Be sure to use to fastening the mechanism and exterior parts because those parts must strictly be controlled for tightening torque. 2.Bit This bit is slightly longer than those set in conventional torque drivers. 3.Tweezers To be used for removing and installing parts and wires. 4.Chip IC replacement jig To be used for replacement of IC. 5.Cleaning cloth Recommended cleaning cloth to wipe down the video heads, mechanism (tape transport system), optical lens surface.
2.2.2 Disassembly method
STEP No. [1] [2] PART TOP COVER ASSEMBLY UPPER ASSEMBLY (Inc. VF ASSEMBLY, SPEAKER/MONITOR) [8] [9] VF ASSEMBLY Fig. No. Fig.C1 S1,2(L1) 2(S2d),S2e,S2c L2,CN2a,b Fig.C2-2 2(S8),L8,CN8a Fig.C2-3 2(S9),L9 2(S10a),CN10a,2(S10b),L10 NOTE 8a NOTE 8b COVER(UPPER) /[10] MONITOR ASSEMBLY NOTE 10a NOTE 10b [11] MONI-BW BOARD ASSEMBLY Fig.C2-4 2(S11a),2(S11b),4(S11c) /[12] SPEAKER BKT(HINGE),KNOB(SLIDE) [3] / [4] [5] FRONT COVER ASSEMBLY (Inc.MIC) MIC Fig.C4 Fig.C3 COVER(JACK),S3,L3a,L3b CN4 S4 S5a,3(S5b),2(L5) CN6,S6 CN7a,b,S7a,3(S7b) CONNECTOR MAIN MAIN CN101 CN103 MONI-BW MONI-BW VF ASSEMBLY BL-2.5/3.5 MIC REAR UNIT JACK ZOOM UNIT CN761 CN762 CN501 Pin No. 40 10 20 32 5 11 22 16 NOTE 11a NOTE 11b NOTE 11c NOTE 3 POINT NOTE -
Fig.C2-1 S2a,2(S2b),3(S2c)
2.2 ASSEMBLY AND DISASSEMBLY OF CABINET PARTS 2.2.1 Disassembly flow chart This flowchart indicates the disassembly step for the cabinet parts and board assembly in order to gain access to item(s) to be serviced. When reassembling, perform the step(s) in reverse order.
COVER(ZOOM) /[6] REAR UNIT /[7] LOWER ASSEMBLY CONN. No. CN2a CN2b CN8a CN4
[1] [2]
TOP COVER ASSEMBLY UPPER ASSEMBLY (Inc. VF ASSEMBLY, SPEAKER/MONITOR) [8] [9] [10] VF ASSEMBLY COVER(UPPER) MONITOR ASSEMBLY
MONI-BW CN763 MAIN MAIN MAIN MAIN CN106 CN104 CN102 CN109
CN10a MONI-BW CN765 CN6 CN7a CN7b
[11] MONI-BW BOARD ASSEMBLY [12] [3] SPEAKER
FRONT COVER ASSEMBLY (Inc.MIC) MIC COVER(ZOOM) REAR UNIT LOWER ASSEMBLY
[4] [5] [6] [7]
Remove the parts marked in . NOTE 8a: Take care not to cut the FPC wire when and after removing the VF ASSEMBLY. NOTE 8b: As for disassembly/assembly of [8]VF ASSEMBLY, see 2.4 ASSEMBLY AND DISASSEMBLY OF [8] VF ASSEMBLY. NOTE 10a: Take care not to cut the FPC when and after removing the MONITOR ASSEMBLY. NOTE 10b: As for disassembly/assembly of [10] MONITOR ASSEMBLY, see 2.5 ASSEMBLY AND DISASSEMBLY OF [10] MONITOR ASSEMBLY. NOTE 11a: Before removing the MONI-BW BOARD ASSEMBLY, check whether MEMORY CARD is inserted or not. If MEMORY CARD is inserted, pull out the MEMORY CARD before removing the MONI-BW BOARD ASSEMBLY. NOTE 11b: Since the SPEAKER is soldered to the MONI-BW BOARD ASSEMBLY, the SPEAKER should not be separated from the MONI-BW BOARD ASSEMBLY except when replacing the SPEAKER. NOTE 11c: Take care not to lose the KNOB(SLIDE). When attaching the KNOB(SLIDE), attach the KNOB(SLIDE) in a proper position. NOTE 3: After removing the FRONT COVER ASSEMBLY, OP BLOCK ASSEMBLY is not covered with anything. Take care not to damage the OP BLOCK ASSEMBLY when and after removing the FRONT COVER ASSEMBLY.
1-6 (No.86722)
1 (S1)
[1]
c CN8a L1 L8 NOTE 8b
[8]
c 13 (S8)
12 (S8) NOTE 8a
Fig.C1
Fig.C2-2
BOTTOM SIDE
2 3 4 5 6 (S2a) (S2b) (S2b) (S2c) (S2c)
c
REAR SIDE
9 8 (S2d) (S2d)
[2]
([8]-[12])
a b CN2b b CN2a
7 (S2c)
a
10 (S2e)
TOP SIDE
11 (S2c)
L2
Fig.C2-1
(No.86722)1-7
[9]
L9 18 (S10b) 19 (S10b) 16 (S10a) d 17 (S10a) 14 (S9) d CN10a NOTE 10a
L.CASE SIDE COVER (JACK)
28 (S3) L3b
[10]
NOTE 10b L10
[3]([4])
28 (S3) 29 (S4) e e L3a CN4 OP BLOCK ASSEMBLY NOTE 3
Fig.C3
15 (S9)
[4]
0.147N m(1.5kgf cm)
.
.
Fig.C2-3
22 (S11b) 21 (S11a) 23 (S11b)
20 (S11a)
BKT(HINGE)
NOTE11c KNOB(SLIDE)
[11]
[12]
NOTE11b 25 (S11c) 26(S11c) 27 (S11c) NOTE 11a
24 (S11c)
Fig.C2-4
1-8 (No.86722)
[5] [7]
L5 30 (S5a) 36 (S7b) 32 (S5b) 31 (S5b) 35 (S7a) CN7b f 33 (S5b)
f
g
g
h CN7a 38 (S7b) h 37 (S7b) CN6 34 (S6)
[6]
Fig.C4
(No.86722)1-9
2.3 ASSEMBLY AND DISASSEMBLY OF CAMERA SECTION AND BOARD ASSEMBLY 2.3.1 Disassembly flow chart This flowchart indicates the disassembly step for the cabinet parts and board assembly in order to gain access to item(s) to be serviced. When reassembling, perform the step(s) in reverse order. NOTE: Please see Service Manual No. 86700 (MECHANISM ASSY).
2 (S1) CN1b 1 (S1) CN1a
[1] [2]
MAIN BOARD ASSEMBLY OP BLOCK ASSEMBLY [5] CCD BOARD ASSEMBLY
[3] [4]
PREMDA BOARD ASSEMBLY MECHANISM ASSEMBLY
2.3.2 Disassembly method
STEP No. PART Fig. No. Fig.D2 S2,L2 POINT NOTE NOTE 2
CN1d
[1] MAIN BOARD ASSEMBLY [2]/[5] OP BLOCK ASSEMBLY / CCD BOARD ASSEMBLY [3]
Fig.D1 CN1a,b,2(S1),CN1c,d
CN1c
CN3a,b,c,d,e,f,2(S3b) 3(S3c),BKT(MECHA)
PREMDA BOARD ASSEMBLY Fig.D3 2(S3a),L3,SHIELD COVER(PR)
CONN. No. CN1a CN1b CN1c CN1d CN3a CN3b CN3c CN3d CN3e CN3f MAIN MAIN MAIN MAIN CN108 CN107 CN111 CN110
CONNECTOR OP BLOCK ASSEMBLY CN501 CCD PREMDA PREMDA SENSOR CAPSTAN MOTOR DRUM MOTOR HEAD LOADING MOTOR ROTARY ENCODER CN5001 CN408 CN401 -
Pin No. 24 20 40 40 16 18 11 8 6 6
[1]
Fig.D1
PREMDA CN406 PREMDA CN405 PREMDA CN404 PREMDA CN402 PREMDA CN403 PREMDA CN407
NOTE[2]
[2]
([5])
Remove the parts marked in . NOTE 2: As for disassembly/assembly of [2] OP BLOCK ASSEMBLY, see 2.6 ASSEMBLY AND DISASSEMBLY OF [2] OP BLOCK ASSEMBLY.
L2
3 (S2)
Fig.D2
1-10 (No.86722)
PREMDA BOARD ASSEMBLY
CN3d
[4]
CN3b CN3a
CN3c
CN3e
CN3f BKT(MECHA)
8 (S3c)
9 (S3c) 7 (S3b) SHIELD COVER (PR)
10 (S3c)
5 (S3a) 6 (S3b)
0.069N.m (0.7kgf.cm) 0.078N.m (0.8kgf.cm)
Fig.D3
[3]
L3
4 (S3a)
(No.86722)1-11
2.4 ASSEMBLY AND DISASSEMBLY OF [8]VF ASSEMBLY 2.4.1 Disassembly of VF ASSEMBLY (1) Remove the EYE CUP. (2) Remove the four screws (1 to 4) and then remove the COVER (VF). (3) Remove the two screws (5 and 6) and then remove the FPC BOARD from the hook attaching the FPC BOARD. NOTE 8a: During the procedure, be careful not to damage the FPC. When attaching the SW BOARD ASSEMBLY, attach the SW BOARD ASSEMBLY so that the SW BOARD ASSEMBLY comes upwards. (4) Remove the four screws (7 to 10), and then pull out and remove the FPC from the VF HINGE ASSEMBLY. NOTE 8b: During the procedure, be careful not to damage the FPC and the SWITCH. (5) Remove the five screws (11 to 15). (6) Remove the UPPER CASE(VF) R. (7) Remove the UPPER CASE(VF) F and then pull out the LENS SA and the LCD UNIT ASSEMBLY with the FPC. NOTE 8c: In attaching the LCD UNIT ASSEMBLY, put the projections of the LCD UNIT ASSEMBLY in the slots of the BOTTOM CASE(VF). Put the STOPPER of the FPC inside the BOTTOM CASE(VF). In attaching the UPPER CASE(VF) F and the UPPER CASE(VF) R, attach the UPPER CASE(VF) F first and then the UPPER CASE(VF) R and be careful to keep the FPC inside the BOTTOM CASE(VF). 2.4.2 (1) (2) (3) Disassembly of the LENS SA Remove the LEVER(LENS). Remove the SHEET(LENS). Remove the LENS ASSEMBLY LENS(VF).
NOTE8b 2 (S8a) 1 (S8a) COVER(VF)
4 (S8a) 3 (S8a)
EYE CUP
5 (S8b)
(L8a)
NOTE8a
FPC 6 (S8b)
FPC
7 (S8a) EYE CUP
8 (S8a)
9 (S8c)
10 (S8c)
VF HINGE ASSEMBLY
from
the
GUIDE
12 (S8c) 11 (S8c)
NOTE 8d: Be careful not to lose the SPRING(LENS).
15 14 (S8c) (S8c)
13 (S8c)
LCD UNIT ASSEMBLY
GUIDE LENS(VF) FPC LENS ASSEMBLY
UPPER CASE(VF)R
L8c
UPPER CASE(VF)F
LCD UNIT ASSEMBLY
SHEET(LENS) SPRING(LENS) NOTE8d: LEVER(LENS)
LENS SA
FPC
Fig.2-4-2
L8b
NOTE8c NOTE8c
BOTTOM CASE(VF)
Fig.2-4-1 1-12 (No.86722)
2.5 ASSEMBLY AND DISASSEMBLY OF [10]MONITOR ASSEMBLY (CABINET PARTS) 2.5.1 Disassembly of MONITOR ASSEMBLY (2.5 INCH) NOTE: Be careful in removing or handling the monitor assembly, especially not to soil or scratch the monitor screen during the disassembly procedure. (1) While removing the four screws (1 to 4) in numerical order and then disengaging the four hooks (L10a-L10d) in alphabetical order, open and remove the MONITOR COVER ASSEMBLY. (2) Remove the SENSOR BOARD ASSEMBLY from the MONITOR CASE. (3) Disconnect the FPC in the connectors CN10a and CN10b in this order, and then remove the MONI.HINGE ASSEMBLY. (4) Disconnect the FPC of the LCD MODULE from the connector CN10c. (5) Remove one screw (5) and then remove the BL BOARD ASSEMBLY together with the BACK LIGHT ASSEMBLY. NOTE 10a: It depends on the inch size of the monitor assembly whether the backlight is supplied as an assembly or as separated parts. In replacing the backlight assembly, see the Parts List. NOTE 10b: Since the BACK LIGHT ASSEMBLY is soldered to the BL BOARD ASSEMBLY, the BACK LIGHT should not be separated from the BL BOARD ASSEMBLY except when replacing them. (6) Remove the DIFF.SHEET. (7) Remove the LCD FRAME together with the LCD MODULE. (8) Remove the SHIELD CASE.
1 (S10a) L10a
2 (S10a) L10d
MONITOR COVER ASSEMBLY
3 (S10b) 4 (S10b) b L10b
L10c
MONI.HINGE ASSEMBLY
CN10c
BL-2.5 BOARD ASSEMBLY SD10b 5 (S10a)
c CN10b SD10a L10e SENSOR BOARD ASSEMBLY a CN10a b
NOTE10b NOTE10a BACK LIGHT
DIFF. SHEET
LCD FRAME c
LCD MODULE
SHIELD CASE L10f
a :0.069N.m (0.7kgf.cm) :0.098N.m (1.0kgf.cm) L10g
MONITOR CASE
Fig.2-5-1
(No.86722)1-13
2.5.2 Disassembly of MONITOR ASSEMBLY (3.5 INCH) NOTE: Be careful in removing or handling the monitor assembly, especially not to soil or scratch the monitor screen during the disassembly procedure. (1) While removing the four screws (1 to 4) in numerical order and then disengaging the four hooks (L10a-L10d) in alphabetical order, open and remove the MONITOR COVER ASSEMBLY. (2) Remove the SENSOR BOARD ASSEMBLY from the MONITOR CASE. (3) Disconnect the FPC in the connectors CN10a and CN10b in this order, and then remove the MONI.HINGE ASSEMBLY. (4) Disconnect the FPC of the LCD MODULE from the connector CN10c. (5) Remove one screw (5) and then remove the BL BOARD ASSEMBLY together with the BACK LIGHT. NOTE 10: Since the BACK LIGHT is soldered to the BL BOARD ASSEMBLY, the BACK LIGHT should not be separated from the BL BOARD ASSEMBLY except when replacing them. (6) While removing the five hooks (L10e-L10i) in alphabetical order, remove the LCD FRAME together with the LCD MODULE. (7) Remove the SHIELD CASE.
2 (S10a) 1 (S10a) L10a L10c L10b L10d MONITOR COVER ASSEMBLY
3 (S10b) 4 (S10b) b CN10a
MONI.HINGE ASSEMBLY
CN10b 5 (S10a) b SENSOR BOARD ASSEMBLY
BL-3.5 BOARD ASSEMBLY
CN10c a NOTE10
BACK LIGHT L10i
LCD FRAME
LCD MODULE
SHIELD CASE L10e L10f L10h a L10g
:0.069N.m (0.7kgf.cm) :0.098N.m (1.0kgf.cm)
MONITOR CASE
Fig.2-5-2
1-14 (No.86722)
2.6 ASSEMBLY AND DISASSEMBLY OF [2]OP BLOCK ASSEMBLY / CCD BOARD ASSEMBLY (CAMERA SECTION AND BOARD ASSEMBLY) 2.6.1 Precautions (1) Take care in handling the CCD IMAGE SENSOR, OP LPF and lens components when performing maintenance etc., especially with regard to surface contamination, attached dust or scratching. If fingerprints are present on the surface they should be wiped away using either a silicon paper, clean chamois or the cleaning cloth. (2) The CCD IMAGE SENSOR may have been shipped with a protective sheet attached to the transmitting glass. When replacing the CCD IMAGE SENSOR, do not peel off this sheet from the new part until immediately before it is mounted in the OP BLOCK ASSEMBLY. (3) The orientation of the OP LPF is an important factor for installation. If there is some marking on the OP LPF, be sure to note it down before removing and to reassemble it very carefully as it was referring to the marking. 2.6.2 Disassembly of CCD BOARD ASSEMBLY and CCD BASE ASSEMBLY (1) Unsolder the CCD BOARD ASSEMBLY by the 14 points (SD2) and then remove it. (2) Remove the two screws (1, 2) and remove the CCD BASE ASSEMBLY. (3) Remove the SPACER. (4) Remove the SHEET. (5) Remove the OP LPF. 2.6.3 Assembly of CCD BASE ASSEMBLY and CCD BOARD ASSEMBLY (1) Set the OP LPF to the OP BLOCK ASSEMBLY so that the OP side touches the OP BLOCK ASSEMBLY. NOTE 2a: Pay careful attention to the orientation of the OP LPF. Set the SHEET to the OP LPF not to come off the right position. Attach the SPACER to the OP BLOCK ASSEMBLY. Fasten them together with the two screws (1, 2). Set the CCD BOARD ASSEMBLY in the CCD BASE ASSEMBLY, and then solder it by the 14 points (SD2).
(2) (3) (4) (5)
2.6.4 Replacement of service repair parts The service repair parts for the OP BLOCK ASSEMBLY are as listed below. Before replacement of these parts, remove the BRACKET (OP BLOCK ASSEMBLY) as required. Take special care not to disconnect any of the FPC wires or cause any damage due to soldering (excessive heating). (1) FOCUS MOTOR (2) ZOOM MOTOR (3) IRIS MOTOR UNIT NOTE 2b: When replacing the FOCUS MOTOR or the ZOOM MOTOR, solder the FPC at a space of about 1 mm above the terminal pin. NOTE 2c: The IRIS MOTOR UNIT includes the FPC ASSEMBLY and two sensors.
7 (S2c) 8 (S2c)
11 9 (S2b) (S2b)
CCD BAORD ASSEMBLY IRIS MOTOR UNIT
OP side
1 (S2a)
Blue CCD side
2 (S2a)
6 5 (S2b) (S2b) FOCUS MOTOR
CCD BASE ASSEMBLY SPACER SHEET
SENSOR 4 (S2b)
OP LPF
3 (S2b)
OP BLOCK
ZOOM MOTOR
0.078N.m (0.8kgf.cm) 0.118N.m (1.2kgf.cm)
Fig.2-6-1
(No.86722)1-15
1-16 (No.86722)
2.7 SERVICE NOTE
[8] 8 C2-2 C2-3 C2-4 9 10 11 12 13 14 15 16 19 20 21 22 25 [9] 5 C2-1 [2] ([8]-[12]) 6 7 [10] 17 18 [11] ([12]) 23 24 26
27
Use the following chart to manage screws
Symbol No. Removing order of screw Place to stick screw Reference drawing (Fig.No.) Screw tightening torque
C1
[5] 30 C4 31 32 33 35 36 37 38
[7]
[3] 28
[4] 29
[6] 34
10
Symbol No. Removing order of screw Place to stick screw Reference drawing (Fig.No.) Screw tightening torque
C3
2 2-4-1 3 4 5 6 7 [8] 8 9 10 11 12 13 14 15
1
2-5-1,2
Symbol No. Removing order of screw Place to stick screw Reference drawing (Fig.No.) Screw tightening torque
Symbol No. Removing order of screw Place to stick screw Reference drawing (Fig.No.) Screw tightening torque
8 9 10 11
: 0.088N.m (0.9kgf.cm) : 0.078N.m (0.8kgf.cm)
: 0.147N.m (1.5kgf.cm) : 0.098N.m (1.0kgf.cm)
: 0.069N.m (0.7kgf.cm) : 0.118N.m (1.2kgf.cm)
2.8 TAKE OUT CASSETTE TAPE NOTE : The following procedure describes a simplified method of ejecting the cassette tape in case it is not possible to eject it, due to an electrical failure. Be careful not to damage any of the parts or the tape when performing repairs or maintenance work. (1) Remove the Power Unit (battery, DC code, etc.) from the set. (2) Open the CASSETTE COVER. (3) Attach a piece of PVC TAPE at the front of the CASSETTE HOUSING ASSEMBLY. NOTE: This helps prevent the tape from being damaged when the CASSETTE HOUSING ASSEMBLY is moved upward at the unloading end. (4) Apply DC 3V to the electrode on the top surface of the LOADING MOTOR ASSEMBLY to set the MECHANISM ASSEMBLY to the EJECT mode. Unloading end is EJECT mode. (5) If there is any slack tape in the tape transport system, wind it inside the DVC CASSETTE TAPE by turning the REEL DISK ASSEMBLY (SUP) from the backside of the SLIDE DECK ASSEMBLY. (6) Peel off the PVC TAPE and take out the DVC CASSETTE TAPE from the CASSETTE HOUSING ASSEMBLY. NOTE: Make sure that grease or a similar substance is not attached to the surface of the tape. Similarly, also make sure that grease or a similar substance is not attached on the MECHANISM ASSEMBLY.
(DC3V)
CASSETTE COVER
LOADING MOTOR ASSEMBLY PVC TAPE CASSETTE HOUSING ASSEMBLY REEL DISK ASSEMBLY (SUP)
Fig.2-8-1
(No.86722)1-17
2.9 EMERGENCY DISPLAY Whenever some abnormal signal is input to the syscon CPU, an error number (E01, as an example) is displayed on the LCD monitor or (in the electronic view finder). In every error status, such the message as shown below alter nately appear over and over. · In an emergency mode, all operations except turning on/off the POWER switch are ineffectual. LCD display E01 Emergency mode LOADING Details
Example (in case of the error number E01):
E01 UNIT IN SAFEGUARD MODE E01 REMOVE AND REATTACH BATTERY
Possible cause
In the case the encoder posi- 1. The mechanism is locked during mode shift. tion is not shifted to the next 2. The mechanism is locked at the mechanism loading end, point though the loading motor because the encoder position is skipped during mechanism has rotated in the loading direcmode shift. tion for 4 seconds or more. This 3. No power is supplied to the loading MDA. error is defined as [E01]. In the case the encoder posi- 1. The mechanism is locked during mode shift. tion is not shifted to the next 2. The mechanism is locked at the mechanism loading end, point though the loading motor because the encoder position is skipped during mechanism has rotated in the unloading dimode shift. rection for 4 seconds or more. This error is defined as [E02]. In the case no REEL FG is produced for 4 seconds or more in the capstan rotation mode after loading was complete, the mechanism mode is shifted to STOP with the pinch roller set off. This error is defined as [E03]. However, no REEL EMG is detected in the SLW/STILL mode. 1. The idler gear does not engage with the reel disk well. 2. Though the idler gear and reel disk are engaged with each other, the tape is not wound because of overload to the mechanism. 3. No FG pulse is output from the reel sensor. 4. No power is supplied to the reel sensor. 5. Tape transport operation takes place with a cassette having no tape inside. 6. The tape slackens and no pulse is produced until the slack is taken up and the tape comes into the normal status.
E02
UNLOADING
E03
TU & SUP REEL FG
E04
DRUM FG
In the case there is no DRUM 1. The drum cannot be started or drum rotation is stopped beFG input in the drum rotation cause tape transport load is too high. mode for 4 seconds or more. 1) Tape tension is extremely high. This error is defined as [E04], 2) The tape is damaged or soiled with grease, etc. and the mechanism mode is 2. The DRUM FG signal is not received by the syscon CPU. shifted to STOP with the pinch 1) Disconnection in the middle of the signal line. roller set off. 2) Failure of the DRUM FG pulse generator (hall element). 3. No drum control voltage is supplied to the MDA. 4. No power is supplied to the DRUM MDA. In the case no CAPSTAN FG is 1. The CAPSTAN FG signal is not received by the syscon produced in the capstan rotaCPU. tion mode for 2 seconds or 1) Disconnection in the middle of the signal line. more. This error is defined as 2) Failure of the CAPSTAN FG pulse generator (MR ele[E06], and the mechanism ment). mode is shifted to STOP with 2. No capstan control voltage is supplied to the MDA. the pinch roller set off. 4. The capstan cannot be started or capstan rotation is However, no CAPSTAN EMG stopped because tape transport load is too high. is detected in the STILL/FF/ 1) Tape tension is extremely high. (Mechanical locking) REW mode. 2) The tape is damaged or soiled with grease, etc. (Tape tangling occurs, etc.) Fig.2-9-1
E05 E06
CAPSTAN FG
1-18 (No.86722)
SECTION 3 ADJUSTMENT
3.1 PREPARATION (1) Precaution This model does not contain adjustment controls (VR). General deck system, camera system and monitor system adjustment are not required. However, if MAIN board need replacement, please use original EEP ROM on to new board. Then adjustment are not required. And if parts such as the following need replacement, special computerized adjustment are required. 3.5.1 Electrical adjustment with personal computer is setup and it adjusts using a service support system. Please contact to JVC Service for detail information. · OP BLOCK ASSEMBLY · EEP ROM (IC1005 of MAIN board) · MONITOR / VF ASSEMBLY In the event of malfunction with electrical circuits, troubleshooting with the aid of proper test instruments most be done first, and then commence necessary repair, replacement and adjustment, etc. a) In case of wiring to chip test points for measurement, use IC clips, etc. to avoid any stress. b) Since connectors are fragile, carefully handle them in disconnecting and connecting. c) Short circuit between operation unit and DECK chassis. (2) Required test equipment a) Color TV monitor. b) AC power adapter c) Oscilloscope (dual-trace type, observable 100 MHz or higher frequency) · It is recommended to use one observable 300 MHz or higher frequency. d) Digital voltmeter e) Frequency counter (with threshold level adjuster) f) Personal computer 3.2 TOOLS REQUIRED FOR ADJUSTMENT
1
Alignment tape MC-1
2
Guide driver (Hexagonal) D-770-1.27
3
INF adjustment lens YTU92001B
4
INF lens holder YTU94087
5
Camera stand YTU93079
6
Light box assembly YTU93096A
7
Gray scale chart YTU94133A
8
Color bar chart YTU94133C
9
Jig connector cable YTU93106B
10
Extension connector YTU94145C-30
11
Communication cable YTU93107A
12
PC cable QAM0099-002
13
Service support system YTU94057-67
14
Cleaning cloth KSMM-01
Fig.3-2-1
(No.86722)1-19
1. Alignment tape To be used for check and adjustment of interchangeability of the mechanism. 2. Guide driver (Hexagonal) To be used to turn the guide roller to adjustment of the linarity of playback envelope. 3.INF adjustment lens To be used for adjustment of the camera system. For the usage of the INF adjustment lens, refer to the Service Bulletin No. YA-SB-10035. 4.INF lens holder To be used together with the Camera stand (6) for operating the Videocamera in the stripped-down condition such as the status without the exterior parts or for using commodities that are not yet conformable to the interchangeable ring. For the usage of the INF lens holder, refer to the Service Bulletin No. YA-SB-10035. 5.Camera stand To be used together with the INF adjustment lens holder. For the usage of the Camera stand, refer to the Service Bulletin No. YA-SB-10035. 6.Light box assembly To be used for adjustment of the camera system. For the usage of the Light box assembly, refer to the Service Bulletin No. YA-SB-10035. 7.Gray scale chart To be used for adjustment of the camera system. For the usage of the INF adjustment lens, refer to the Service Bulletin No. YA-SB-10035. 8.Color bar chart To be used for adjustment of the camera system. For the usage of the INF adjustment lens, refer to the Service Bulletin No. YA-SB-10035. 9. Jig connector cable Connected to CN105 of the main board and used for electrical adjustment, etc. NOTE: Only some of the connectors in the JIG connector (YTU93106B) are soldered to wires. It is desirable that you solder all the connectors to wires before using the JIG connector (YTU93106B), but you should solder only the connectors shown in the following JIG connector schematic diagram to wires because they are used in this model. As for the details, see 3.3 JIG CONNECTOR CABLE. 10.Extension connector Connect this extension connector to the connector of the jig connector cable for extending the cable connector. NOTE: removing the cover (for jig), use this extension connector triple for connecting the jig connector cable. 11.Communication Cable Connect the Communication cable between the PC cable and Jig connector cable when performing a PC adjustment. 12.PC cable To be used to connect the Videocamera and a personal computer with each other when a personal computer issued for adjustment.
13.Service support system To be used for adjustment with a personal computer. Software can be downloaded also from JS-net. 14.Cleaning cloth Recommended the Cleaning cloth to wipe down the video heads, mechanism (tape transport system), optical lens surface.
1-20 (No.86722)
3.3 JIG CONNECTOR CABLE Nine wires have been soldered to the JIG CONNECTOR CABLE (YTU93106B). Solder another nine wires to the JIG CONNECTOR CABLE (YTU93106B) to use in this set. See the JIG CONNECTOR SCHEMATIC DIAGRAM and JIG CONNECTOR BOARD to solder the nine wires. 3.3.1 JIG CONNECTOR SCHEMATIC DIAGRAM
BEFORE MAIN CN105 / JIG CONNECTOR 1 16 2 17 3 18 4 19 5 20 6 21 7 22 8 23 9 24 10 25 11 26 12 27 13 28 14 29 15 30 AL_3VSYS CJIG_RST VIDL VCOM STH1 CVF_R CVF_B V_OUT GND MON_R MON_G CVF_G MON_B MONI_CHG JLIP_RX GND JLIP_TX PB_CLK HID1 GND ATFI ENV_OUT MAIN_VCO DISCRI I_MTR IF_TX EXMOD_0 FS_PLL MMOD_0 MMOD_1 JIG CONNECTOR BOARD 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 NC NC NC NC GND NC NC JLIP_RX JLIP_TX HID1 NC MAIN_VCO NC NC NC NC NC NC NC NC NC MONI_CHG GND NC NC ENV_OUT NC NC FS_PLL NC MAIN CN105 / JIG CONNECTOR 1 16 2 17 3 18 4 19 5 20 6 21 7 22 8 23 9 24 10 25 11 26 12 27 13 28 14 29 15 30 AL_3VSYS CJIG_RST VIDL VCOM STH1 CVF_R CVF_B V_OUT GND MON_R MON_G CVF_G MON_B MONI_CHG JLIP_RX GND JLIP_TX PB_CLK HID1 GND ATFI ENV_OUT MAIN_VCO DISCRI I_MTR IF_TX EXMOD_0 FS_PLL MMOD_0 MMOD_1 NOTE: The wires shown as Solder the wires shown as AFTER JIG CONNECTOR BOARD 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 NC VIDL STH1 CVF_B GND MON_G MON_B JLIP_RX JLIP_TX HID1 NC MAIN_VCO NC NC NC NC VCOM CVF_R NC MON_R CVF_G MONI_CHG GND NC NC ENV_OUT NC NC FS_PLL NC
are already soldered. .
Fig.3-3-1 3.3.2 JIG CONNECTOR BOARD
30 FOIL SIDE
YTU94113-30
COMPONENT SIDE
YTU
FOIL SIDE
21 17
20 18
10
91 42 6
7
6 4 3 2 1
COMPONENT SIDE
NOTE: Solder wires to 17, 18, 20 and 21.
FOIL SIDE
2 4 6
3 7
21 17
20 18
NOTE: Solder wires to 2, 3, 4, 6 and 7.
Fig.3-3-2 (No.86722)1-21
3.4 MECHANISM COMPATIBILITY ADJUSTMENT 3.4.1 Tape pattern check (1) Connect the JIG CONNECTOR CABLE to the set. As for the connection procedure, JIG CONNECTOR BOARD and see 3.5 ELECTRICAL ADJUSTMENT. (2) Remove the COVER(ADJUST) (3) Play back the compatibility adjustment tape. (4) While triggering the HID1, observe the waveform of ENV_OUT. (5) Confirm that the waveform is free from remarkable leveldown, and entirely parallel and straight. (6) In case any level-down is observed on the left hand side, straighten the level by turning the GUIDE ROLLER (SUP) of the POLE BASE ASSEMBLY. In case any level-down is observed on the right hand side, however, straighten the level by turning the GUIDE ROLLER(TU) of the POLE BASE ASSEMBLY. (7) After adjustment, try the unloading motion once, and confirm that the waveform is flat (straight) when the tape has been played back again. Moreover, perform readjustment as required. (8) When the recording has been played back again, play back the self-recording to confirm that the waveform is flat.
ENV_OUT
HID1
Fig.3-4-1
Flatten the waveform. Misalignment of guide roller height on the supply side Misalignment of guide roller height on the take-up side
Fig.3-4-2
GUIDE ROLLER (SUP)
GUIDE ROLLER (TU)
COVER (ADJUST) JIG CONNECTOR CABLE
Refer To 3.3
JIG CONNECTOR
TO JLIP_RX RED TO JLIP_TX WHITE TO GND BLACK
COMMUNICATION CABLE
JIG CONNECTOR
OSCILLOSCOPE
TO ENV_OUT TO HID1
Fig.3-4-3
1-22 (No.86722)
3.5 ELECTRICAL ADJUSTMENT 3.5.1 Electrical adjustment with personal computer · Electrical adjustmentis performed by using PERSONAL COMPUTER. As for the connection of cables, see Fig. 3-5-1. Read README.TXT file to use the software for SERVICE SUPPORT SYSTEM properly. · Remove the COVER (JIG) to perform adjustment.
COMMUNICATION CABLE
RED
JIG CONNECTOR
TO JLIP_RX TO JLIP_TX TO GND
WHITE BLACK
SERVICE SUPPORT SYSTEM
CN105
COVER (JIG)
RS232C COM PORT
JIG CONNECTOR CABLE
EXTENSION CONNECTOR NOTE: Removing the cover (for jig), use this extension connector triple for connecting the jig connector cable.
MENU
PC CABLE
COMMUNICATION CABLE
PERSONAL COMPUTER
Fig.3-5-1
(No.86722)1-23
JVC SERVICE & ENGINEERING COMPANY OF AMERICA DIVISION OF JVC AMERICAS CORP.
www.jvcservice.com(US Only)
JVC CANADA INC.
Head office : 21 Finchdene Square Scarborough, Ontario M1X 1A7 (416)293-1311
(No.86722)
Printed in Japan 200304WPC