JVC GR-D20, GR-D21, GR-D40E Service Manual

SERVICE MANUAL

DIGITAL VIDEO CAMERA

86730200304

GR-D20EK,GR-D20EX,GR-D20EY,GR-D20EZ,GR-D21EK,

GR-D40EK,GR-D40E

For disassembling and assembling of MECHANISM ASSEMBLY, refer to the SERVICE MANUAL No.86700 (MECHANISM ASSEMBLY).

,GR-D40EY,GR-D40E

PAL

SPECIFICATION

Camcorder

General

Power supply : DC 11.0 V (Using AC Adapter)

Power consumption LCD monitor off, viewfinder on : Approx. 3.4 W LCD monitor on, viewfinder off : Approx. 4.7 W Dimensions (W x H x D) : 69 mm x 94 mm x 143 mm

Weight : Approx. 525 g Operating temperature : 0°C to 40°C Operating humidity : 35% to 80% Storage temperature : -20°C to 50°C Pickup : 1/6" CCD Lens : F 1.6, f = 2.7 mm to 43.2 mm, 16:1 power zoom lens Filter diameter : Ø37 mm LCD monitor : 2.5" diagonally measured, LCD panel/TFT active

Viewfinder : Electronic viewfinder with 0.24" black/white LCD Speaker : Monaural

DC 7.2 V (Using battery pack)

(with the LCD monitor closed and the viewfinder pushed back in)

matrix system

Connectors

S-Video Output : Y : 1 V (p-p), 75 Ω, analogue

Input* : Y : 0.8 V (p-p) -1.2 V (p-p), 75 Ω, analogue

AV Video output : 1 V (p-p), 75 Ω, analogue Video input* : 0.8 V (p-p) -1.2 V (p-p), 75 Ω, analogue Audio output : 300 mV (rms), 1 kΩ, analogue, stereo Audio input* : 300 mV (rms), 50 kΩ, analogue, stereo

DV Output : 4-pin, IEEE 1394 compliant Input* : 4-pin, IEEE 1394 compliant USB** :5-pin EDIT Ø3.5 mm, 2-pole

* GR-D50/D30 only ** GR-D50/D40 only

C : 0.29 V (p-p), 75 Ω, analogue C : 0.2 V (p-p) -0.4 V (p-p), 75 Ω, analogue

Digital Video Camera

Format : DV format (SD mode) Signal format : PAL standard Recording/Playback format : Video: Digital component recording

Cassette : Mini DV cassette Tape speed : SP : 18.8 mm/s

Maximum recording time : SP : 80 min. (using 80 min. cassette) LP : 120 min.

Specifications shown are for SP mode unless otherwise indicated. E & O.E. Design and specifications subject

to change without notice.

: Audio: PCM digital recording,

32 kHz 4-channel (12-bit), 48 kHz 2-channel (16-bit)

LP : 12.5 mm/s

GR-D20EK,GR-D20EX,GR-D20EY,GR-D20EZ,GR-D21EK,GR-D40EK,GR-D40EX,GR-D40EY,GR-D40EZ M3D122,M3D124

Power requirement AC 110 V to 240 V ~, 50 Hz/60 Hz Output : DC 11 V , 1 A

AC Adapter

No.86730

2003/04

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 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.

[1]

TOP COVER ASSEMBLY

[2]

UPPER ASSEMBLY

(Inc. VF ASSEMBLY,

SPEAKER/MONITOR)

[8]

[9]

[10]

[11]

MONI-BW BOARD ASSEMBLY

[12]

[3]

FRONT COVER ASSEMBLY

VF ASSEMBLY

COVER(UPPER)

MONITOR ASSEMBLY

SPEAKER

(Inc.MIC)

[4]

[5]

[6]

[7]

LOWER ASSEMBLY

MIC

COVER(ZOOM)

REAR UNIT

2.2.2 Disassembly method

STEP

No.

[1]

[2]

[8]

[9]

/[10]

[11]

/[12]

[3]

[4]

[5]

/[6]

/[7]

CONN.

No.

CN2a

CN2b

CN8a

CN10a

CN4

CN6

CN7a

CN7b

PART

TOP COVER ASSEMBLY

UPPER ASSEMBLY

(Inc. VF ASSEMBLY,

SPEAKER/MONITOR)

VF ASSEMBLY

COVER(UPPER)

MONITOR ASSEMBLY

MONI-BW BOARD ASSEMBLY

SPEAKER

FRONT COVER ASSEMBLY

(Inc.MIC)

MIC

COVER(ZOOM)

REAR UNIT

LOWER ASSEMBLY

MAIN CN101

MAIN CN103

MONI-BW CN763

MONI-BW CN765

MAIN CN106

MAIN CN104

MAIN CN102

MAIN CN109

Fig. No.

Fig.C1

Fig.C2-1

Fig.C2-2

Fig.C2-3

Fig.C2-4

Fig.C3

Fig.C4

CONNECTOR

POINT

S1,2(L1)

S2a,2(S2b),3(S2c)

2(S2d),S2e,S2c

L2,CN2a,b

2(S8),L8,CN8a

2(S9),L9

2(S10a),CN10a,2(S10b),L10

2(S11a),2(S11b),4(S11c)

BKT(HINGE),KNOB(SLIDE)

COVER(JACK),S3,L3a,L3b

CN4

S5a,3(S5b),2(L5)

CN6,S6

CN7a,b,S7a,3(S7b)

MONI-BW CN761

MONI-BW CN762

VF ASSEMBLY -

BL-2.5/3.5 -

MIC -

REAR UNIT -

JACK CN501

ZOOM UNIT -

NOTE

NOTE 8a

NOTE 8b

NOTE 10a

NOTE 10b

NOTE 11a

NOTE 11b

NOTE 11c

NOTE 3

Pin No.

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.86730)

(S1)

Fig.C1 Fig.C2-2

[1]

CN8a

BOTTOM SIDE

(S8)

NOTE 8b

(S8)

NOTE 8a

[8]

CN2a

CN2b

(S2a)3(S2b)

REAR SIDE

(S2b)5(S2c)6(S2c)

(S2d)

[2]

([8]-[12])

(S2c)

(S2e)

TOP SIDE

(S2c)

Fig.C2-1

(No.86730)1-7

[9]

L.CASE SIDE

COVER

(JACK)

NOTE 10a

(S10b)

[10]

NOTE 10b

L10

0.147N.m(1.5kgf.cm)

(S11a)

(S10a)

(S9)

[3]

(S3)

([4])

(S4)

(S9)

CN10a

[4]

OP BLOCK ASSEMBLY NOTE 3

L3a

Fig.C2-3 Fig.C3

(S11b)

(S11a)

L3b

CN4

(S11b)

[12]

NOTE11b

Fig.C2-4

BKT(HINGE)

NOTE11c KNOB(SLIDE)

NOTE 11a

[11]

(S11c)

26(S11c)

(S11c)

1-8 (No.86730)

[7]

(S5a)

[5]

CN7a

(S7b)

CN7b

(S7b)

(S7a)

(S7b)

(S5b)

CN6

[6]

(S6)

Fig.C4

(No.86730)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).

(S1)

[1]

MAIN BOARD ASSEMBLY

[2]

[3]

[4]

OP BLOCK ASSEMBLY

[5]

CCD BOARD ASSEMBLY

PREMDA BOARD ASSEMBLY

MECHANISM ASSEMBLY

2.3.2 Disassembly method

STEP

No.

[1]

[2]/[5]

[3]

[4]

CONN.

No.

CN1a

CN1b

CN1c

CN1d

CN3a

CN3b

CN3c

CN3d

CN3e

CN3f

PART

MAIN BOARD ASSEMBLY

OP BLOCK ASSEMBLY

/ CCD BOARD ASSEMBLY

PREMDA BOARD ASSEMBLY

MECHANISM

ASSEMBLY

MAIN CN108

MAIN CN107

MAIN CN111

MAIN CN110

PREMDA CN406

PREMDA CN405

PREMDA CN404

PREMDA CN402

PREMDA CN403

PREMDA CN407

Fig. No.

Fig.D1

Fig.D2

Fig.D3

CONNECTOR

POINT

CN1a,b,2(S1),CN1c,d

S2,L2

2(S3a),L3,SHIELD COVER(PR)

CN3a,b,c,d,e,f,2(S3b)

3(S4),BKT(MECHA)

OP BLOCK ASSEMBLY CN501

CCD CN5001

PREMDA CN408

PREMDA CN401

SENSOR -

CAPSTAN MOTOR -

DRUM MOTOR -

HEAD -

LOADING MOTOR -

ROTARY ENCODER -

NOTE

NOTE 2

Pin No.

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.

CN1b

(S1)

CN1a

CN1d

CN1c

[1]

Fig.D1

NOTE[2]

[2]

([5])

1-10 (No.86730)

(S2)

Fig.D2

[4]

BKT(MECHA)

PREMDA BOARD ASSEMBLY

CN3d

CN3b

CN3c

CN3a

CN3e

CN3f

0.069N.m (0.7kgf.cm)

0.078N.m (0.8kgf.cm)

(S4)

Fig.D3

(S4)

(S3b)

[3]

(S3b)

SHIELD COVER

(PR)

(S3a)

(No.86730)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 COV-

ER (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 re-

move 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 projec-

tions of the LCD UNIT ASSEMBLY in the slots of the

BOTTOM CASE(VF). Put the STOPPER of the FPC in-

side 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).

EYE CUP

NOTE8b

(S8a)

(S8b)

(S8a)

(L8a)

FPC

NOTE8a

(S8b)

(S8a)

COVER(VF)

(S8a)

FPC

(S8a)

2.4.2 Disassembly of the LENS SA

(1) Remove the LEVER(LENS). (2) Remove the SHEET(LENS). (3) Remove the LENS ASSEMBLY from the GUIDE

LENS(VF).

NOTE 8d:

Be careful not to lose the SPRING(LENS).

LENS ASSEMBLY

SHEET(LENS)

SPRING(LENS)

NOTE8d:

GUIDE LENS(VF)

LCD UNIT ASSEMBLY

FPC

LEVER(LENS)

Fig.2-4-2

(S8c)

UPPER CASE(VF)R

LENS SA

L8b

(S8c)

VF HINGE ASSEMBLY

(S8c)

L8c

LCD UNIT

ASSEMBLY

Fig.2-4-1

UPPER CASE(VF)F

FPC

NOTE8c

BOTTOM CASE(VF)

1-12 (No.86730)

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

(S10a)

L10a

ASSEMBLY.

(2) Remove the SENSOR BOARD ASSEMBLY from the

MONITOR CASE.

(3) Disconnect the FPC in the connectors CN10a and CN10b

(S10b)

in this order, and then remove the MONI.HINGE ASSEMBLY.

(4) Disconnect the FPC of the LCD MODULE from the connec-

MONI.HINGE ASSEMBLY

tor 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

SD10a

whether the backlight is supplied as an assembly or as separated parts. In replacing the backlight assembly, see the Parts List.

SENSOR BOARD ASSEMBLY

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.

(S10a)

(S10b)

L10e

L10d

CN10b

MONITOR COVER ASSEMBLY

L10b

CN10c

SD10b

CN10a

L10c

BL-2.5 BOARD ASSEMBLY

(S10a)

NOTE10b

NOTE10a BACK LIGHT

DIFF. SHEET

:0.069N.m (0.7kgf.cm)

:0.098N

m (1.0kgf.cm)

Fig.2-5-1

LCD FRAME

LCD MODULE

SHIELD CASE

L10f

L10g

MONITOR CASE

(No.86730)1-13

2.6 ASSEMBLY AND DISASSEMBLY OF [2]OP BLOCK ASSEMBLY / CCD BOARD ASSEMBLY (CAMERA SECTION AND BOARD ASSEMBLY)

2.6.1 Precautions

2.6.3 Assembly of CCD BASE ASSEMBLY and CCD

(1) Take care in handling the CCD IMAGE SENSOR, OP LPF

and lens components when performing maintenance etc.,

(1) Set the OP LPF to the OP BLOCK ASSEMBLY so that the 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) Set the SHEET to the OP LPF not to come off the right

(3) Attach the SPACER to the OP BLOCK ASSEMBLY. (4) Fasten them together with the two screws (1, 2). (5) Set the CCD BOARD ASSEMBLY in the CCD BASE

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.

BOARD ASSEMBLY

OP side touches the OP BLOCK ASSEMBLY.

NOTE 2a:

Pay careful attention to the orientation of the OP LPF.

position.

ASSEMBLY, and then solder it by the 14 points (SD2).

(S2c)

SENSOR

CCD BAORD

(SD2)

ASSEMBLY

CCD BASE ASSEMBLY

SPACER

0.078N.m (0.8kgf.cm)

0.118N

m (1.2kgf.cm)

(S2b)

IRIS MOTOR UNIT <NOTE 2b, c>

(S2b)

OP BLOCK

(S2b)

FOCUS MOTOR <NOTE 2b>

(S2b)

OP LPF

Blue

side

(S2b)

CCD

side

SHEET

OP LPF

ZOOM MOTOR <NOTE 2b>

(S2a)

1-14 (No.86730)

Fig.2-6-1

2.7 SERVICE NOTE

Use the following chart to manage screws

cm)

[11] ([12])[2] ([8]-[12]) [8] [10][9]

C2-4C2-1

C2-2 C2-3

[10]

[2]

[1] [3] [4]

Symbol No.

D2 D3

12345678910

Place to stick screw

Removing order of screw

Screw tightening torque

Reference drawing (Fig.No.)

Symbol No.

2-5-1

12345

Place to stick screw

Removing order of screw

Screw tightening torque

Reference drawing (Fig.No.)

m (0.7kgf

m (1.2kgf

: 0.118N

: 0.069N

㸉

㸌

cm)

m (1.5kgf

m (1.0kgf

: 0.147N

: 0.098N

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

[1]

Symbol No.

Place to stick screw

Removing order of screw

Screw tightening torque

Reference drawing (Fig.No.)

[3] [4] [5] [6] [7]

Symbol No.

28 29 30 31 32 33 34 35 36 37 38

Place to stick screw

Removing order of screw

Screw tightening torque

Reference drawing (Fig.No.)

[8]

Symbol No.

2-4-1

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

Place to stick screw

Removing order of screw

Screw tightening torque

Reference drawing (Fig.No.)

[2]/[5]

Symbol No.

2-6-1

1234567891011

Place to stick screw

Removing order of screw

Screw tightening torque

Reference drawing (Fig.No.)

<NOTE>

cm)

m (0.9kgf

m (0.8kgf

: 0.088N

: 0.078N

(No.86730)1-15

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.

(DC3V)

(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.

CASSETTE COVER

LOADING MOTOR ASSEMBLY

PVC T

APE

REEL DISK ASSEMBLY (SUP)

CASSETTE HOUSING ASSEMBLY

Fig.2-8-1

1-16 (No.86730)

2.9 EMERGENCY DISPLAY

Example (in case of the error number E01):

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

E01 UNIT IN SAFEGUARD MODE

nately appear over and over.

• In an emergency mode, all operations except turning on/off the POWER switch are ineffectual.

LCD

display

E01 LOADING In the case the encoder posi-

Emergency

mode

Details Possible cause

tion is not shifted to the next point though the loading motor has rotated in the loading direction for 4 seconds or more. This

1. The mechanism is locked during mode shift.

2. The mechanism is locked at the mechanism loading end, because the encoder position is skipped during mechanism mode shift.

3. No power is supplied to the loading MDA.

error is defined as [E01].

E02 UNLOADING In the case the encoder posi-

tion is not shifted to the next point though the loading motor has rotated in the unloading di-

1. The mechanism is locked during mode shift.

2. The mechanism is locked at the mechanism loading end, because the encoder position is skipped during mechanism mode shift.

rection for 4 seconds or more. This error is defined as [E02].

E03 TU & SUP REEL FG In the case no REEL FG is pro-

duced 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.

E04 DRUM FG In the case there is no DRUM

FG input in the drum rotation mode for 4 seconds or more. This error is defined as [E04], and the mechanism mode is shifted to STOP with the pinch roller set off.

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.

1. The drum cannot be started or drum rotation is stopped because tape transport load is too high.

1) Tape tension is extremely high.

2) The tape is damaged or soiled with grease, etc.

2. The DRUM FG signal is not received by the syscon CPU.

1) Disconnection in the middle of the signal line.

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.

E05 - - -

E06 CAPSTAN FG In the case no CAPSTAN FG is

produced in the capstan rotation mode for 2 seconds or more. This error is defined as [E06], and the mechanism mode is shifted to STOP with the pinch roller set off. However, no CAPSTAN EMG is detected in the STILL/FF/ REW mode.

1. The CAPSTAN FG signal is not received by the syscon CPU.

1) Disconnection in the middle of the signal line.

2) Failure of the CAPSTAN FG pulse generator (MR ele-

ment).

2. No capstan control voltage is supplied to the MDA.

4. The capstan cannot be started or capstan rotation is stopped because tape transport load is too high.

1) Tape tension is extremely high. (Mechanical locking)

2) The tape is damaged or soiled with grease, etc. (Tape

tangling occurs, etc.)

E01 REMOVE AND REATTACH BATTERY

Fig.2-9-1

(No.86730)1-17

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 chas-

sis.

(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

Alignment tape

INF adjustment lens

YTU92001B

Camera stand

YTU93079

Gray scale chart

YTU94133A

Jig connector cable

YTU93106B

MC-2

Guide driver (Hexagonal)

D-770-1.27

INF lens holder

YTU94087

Light box assembly

YTU93096A

Color bar chart

YTU94133C

Extension connector

YTU94145C-30

1-18 (No.86730)

Communication cable

Service support system

YTU94057-67

YTU93107A

Fig.3-2-1

PC cable

QAM0099-005

Cleaning cloth

KSMM-01

+ 32 hidden pages