SHARP VL-A111S/H/E, VL-AH131S/H/E, VL-AH151S/H/E Service Manual

SERVICE MANUAL

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

SERVICE MANUAL

S32G4VL-A111S

LIQUID CRYSTAL CAMCORDER Hi 8 PAL

VL-A111S/H/E VL-AH131S/H/E

LIQUID CRYSTAL CAMCORDER

PAL

MODELS VL-A111S/H/E/AH131S/H/E/AH151S/H/E

1. SPECIFICATIONS .............................................................................................................................. 2

2. PART NAMES AND FUNCTION ........................................................................................................ 3

3. DISASSEMBLY OF THE SET ............................................................................................................ 4

4. MECHANISM ADJUSTMENT........................................................................................................... 10

5. ADJUSTMENT OF THE ELECTRICAL CIRCUITS .......................................................................... 21

6. BLOCK DIAGRAMS.......................................................................................................................... 34

7. SCHEMATIC DIAGRAMS................................................................................................................. 44

8. PRINTED WIRING BOARD ASSEMBLIES ...................................................................................... 88

9. REPLACEMENT PARTS LIST ......................................................................................................... 99

10.PACKING OF THE SET.................................................................................................................. 116

MODELS

In the interests of user-safety (Required by safety regulations in some countries) the set should be restored to its original condition and only parts identical to those specified be used.

CONTENTS

VL-AH151S/H/E

Page

SHARP CORPORATION

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

1. SPECIFICATIONS

Signal System: PAL standard

Recording System: 2 rotary heads, helical scanning system

Cassette: A111S/H/E: 8 mm video tape, MP type

AH131S/H/E/AH151S/H/E: 8 mm video tape, MP type or Hi8 MP, ME type

Recording/Playback Time: 120 minutes (P5-120)

Tape Speed: 20.051 mm/second

Pickup Device: 1/4" (6.4mm, effective size: 4.5 mm) CCD image sensor (with approx.

320,000 pixels including optical black)

Lens: 16 × power zoom lens (F1.4, f=4.0-64.0 mm), and full-range auto focus

Lens Filter Diameter: 46 mm

Monitor: 3" (7.5 cm) full-color LCD screen (TFT active matrix)

Microphone: Electret monaural microphone

Color Temperature Compensation: Auto white balance with white balance lock

Minimum Illumination: 0.8 lux* (with gain-up, F1.4)

Video Output Level: 1.0 Vp-p 75-ohm unbalanced Audio Output Level: –8 dBs, impedance less than 2.2 kohms

Speaker Output: 200 mW

Power Requirement: DC 3.6V (with battery pack)

DC 7.0V (with AC adapter)

Power Consumption: A111S/H/E/AH131S/H/E: 4.9W

AH151S/H/E: 5.0W zoom motor off and backlight in normal mode)

Operating Temperature: 0°C to + 40°C

Operating Humidity: 30% to 80% Storage Temperature: –20°C to +60°C Dimensions (approx.): 183 mm (W) × 109 mm (H) × 99 mm (D)

Weight (approx.): 720g

(without battery pack, lithium battery, video cassette, and lens cap)

(during camera recording in full auto mode with

AC Adapter(UADP-0313TAZZ)

Power Requirement: AC 110-240 V, 50/60 Hz

DC Output: 7.0 V

Power Consumption: 15 W

Dimensions (approx.): 68 mm (W) × 37 mm (H) × 130 mm (D)

Weight (approx.): 233 g

Specifications are subject to change without notice.

*Minimum illumination: Since there is no widely accepted testing procedure for determining minimum illumination

capability, lux ratings are comparable only between models from the same manufacturer.

2. PART NAMES AND FUNCTION

Front view

When the cassette compartment door is open

Terminal cover

Microphone

Zoom lens

Speaker

VIDEO jack

DC IN jack

Shoulder strap

loop

Lithium battery

holder

Cassette holder

Lens hood

Cassette compartment door

release

Cassette compartment door

AUDIO jack

Rear view

Bottom view

Battery compartment door

Power Zoom Wide angle/

Telephoto control

VOLume control

DISPLAY button

Operation buttons

CHARGE indicator

Remote Sensor

(VL-AH151S/H/E only)

MENU button

LCD monitor screen

RECord START/STOP button

Shoulder strap

loop

FADE button

Hand strap

Tripod socket

Battery compartment door release

Power switch (CAMERA/VCR

select switch)

For details on the use of each control.

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

3. DISASSEMBLY OF THE SET

3-1. REMOVAL OF THE CAMERA SECTION

Note:

Before removing the cabinet, turn off the power supply, and ascertain that the battery has been removed.

(b)

(d)

Pull out

(1) Camera front cabinet

(a)

1. Remove one screw ((d)XiPSF20P04000), one screw ((b)LXHZ0018TAFF), two screws ((a)LX-HZ0018TAFN), and pull out the camera front cabinet (1).

Pull out

(a)

(b)

Connector

(d)

(2) Camera rear cabinet

(a)

2. Remove one screw ((b)LX-HZ0018TAFF), one screw ((d)XiPSF20P04000) and two screws ((a)LX-HZ0018TAFN) and pull out the camera rear cabinet (2) backwards.

Remove the FPC in the camera rear cabinet.

Connector

5. Remove the connector of the 6-cell detection switch, and remove two screws ((b)LX-HZ0018TAFF) fixing the battery catcher.

Pull out

(b)

Tilt frame C

(b)

6. Remove two screws ((b)LX-HZ0018TAFF) and pull out the camera side cover from the tilt frame C.

(c)

CCD connector

3. Firstly, remove the CCD connector from the Camera PWB, then remove one screw ((c)LX-HZ0045TAFN), on the reverse side in this figure (Do not remove the lens holder in this section).

Pull out

Lens holder

Lens connector

4. Pulling the lens holder, pull out the lens upwards. Then, remove the lens connector.

7. Remove the battery catcher from the camera side cover.

(c)

Connector

8. Remove one connector of the camera PWB, and remove two

screws ((c)LX-HZ0045TAFN) fixing the PWB.

Ferrite

FPC

PSPAH0031TAZZ

Connector

9. After removing the camera PWB from the tilt frame C, remove the connector on the rear of the PWB.

3-2. DISASSEMBLY OF THE VCR MAIN BODY

<1. Removal of the VCR lid shaft>

Area A

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

(k)

(1) Remove one screw ((k)LX-HZ0063TAFN). <Detail of area A>

VCR lid

Frame V

VCR lid shaft

(2) Bring the jig (example: slotted precision screwdriver) into

contact with the removal groove of the VCR lid shaft, and slide the screwdriver with care to prevent damaging the VCR lid and frame V.

VCR lid shaft

(b)

(2) Remove five screws ((b)LX-HZ0018TAFF).

Tilt frame C

(i)

(3) Turn the tilt frame C so that the screwdriver can be easily

inserted, and remove two screws ((i)XiPSN20P04000).

(i)

(3) Pull out the VCR lid shaft head which projects beyond the

surface of the VCR lid.

<2. Disassembly of the cabinet L>

VCR lid

VCR lid knob

(1) Slide the “VCR lid knob” in the arrow direction, and slide the

VCR lid in the arrow direction as far as the cabinet L fastening screw is visible. (Left figure) Since the connector of the microphone is still connected, take care to prevent excessively sliding the VCR lid.

(4) Remove one screw ((i)XiPSN20P04000).

Cabinet L

FPC connector

(5) Remove the cabinet L partway, and disconnect the FPC

connector.

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

<3. Removal of the VCR lid>

Microphone connector

Area B

(1) Disconnect the microphone connector.

Microphone connector

Microphone wire spacer

Caution for installation of the VCR lid

VCR lid

When installing the VCR lid, move the VCR lid in the arrow direction, keeping the VCR lid parallel to the main body as shown above.

<4. Removal of the AV unit and AV unit cover>

(b)

AV unit FPC

Wire fixing tape

AV unit wire

(2) Remove the connector cable from the hole of the microphone

wire spacer.

Microphone connector

Frame V

Microphone wire spacer

(3) Remove the microphone wire spacer from the Frame V.

VCR Lid

(1) Peel the wire fixing tape. (2) Remove the AV unit wire. (3) Remove the AV unit FPC. (4) Remove two screws ((b)LX-HZ0018TAFF) fixing the AV unit

and LCD holder.

<5. Disassembly of the LCD holder>

Tripod angle

(d)

(1) Remove three screws ((d)XiPSF20P04000) and pull out the

tripod angle.

Pull out

(b)

(4) Pull out the microphone wire cable with care to prevent it from

interfering with the mechanical parts, and remove the VCR lid.

(2) Remove three screws ((b)LX-HZ0018TAFF) on the tilt frame

Move the tilt frame V by a looseness of the tilt FPC.

<8. Removal of the Lithium PWB>

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

LCD unit

(b)

Connector

Inverter transformer

(3) Remove two screws ((b)LX-HZ0018TAFF) and two connec-

tors, and remove the LCD unit (with inverter) from the main body.

<6. Removal of the tilt unit>

Tilt frame C

Tilt frame V

Battery terminal unit

Lithium PWB

Main PWB

Connector

(1) Remove the connector of the Lithium PWB from the Main

PWB.

(2) Move the lithium unit in the direction of the arrow.

<9. Disassembly of the frame V>

(e)

Frame V

Mechanism unit

(e)

Connector

(1) Disconnect three connectors.

Remove the tilt unit from the cabinet of the main body.

<7. Removal of the speaker cover>

Connector

Main PWB

(1) Remove the connector of the speaker cover from the Main

PWB.

(b)

(1) Remove three screws ((e)LX-BZ0191TAFD) and one con-

nector, and remove the frame V from the main body.

<10. Removal of the cassette compartment lid>

(1) Using the slotted precision screwdriver, push and turn the

two claws (C and D) which fasten the cassette compartment lid, and the cassette compartment lid will be removed from the hook area of the cassette component.

(2) Turning the cassette compartment lid in the arrow direction,

lift it, and the claws A and B will be disengaged to remove the cassette compartment lid.

(2) Remove the screw ((b)LX-HZ0018TAFF) fixing the speaker

cover.

(3) Move the speaker holder in the direction of the arrow to

remove it.

Note:

Take care to prevent breaking the claws of the cassette compartment lid.

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

Claw C

Claw B

Claw D

View E

Claw A

View F

Note:

When fixing the cassette compartment lid, first engage the claws A and B, and then engage the claws C and D, confirm that the four claws (A, B, C and D) of the cassette compartment lid are securely engaged as shown in the view above.

<11. Disassembly of the LCD panel>

(2)

Claw (A)

(1)

Claw (A)

Reflection sheet Light guide plate

Diffusion sheet

Prism sheet

Lugs

(3)

Arm(E)

(C)

FPC

Lugs

Arm(D)

Claw (B)

(2)

(4)

Disengage the claw, and remove the LCD panel.

1. Disengage two claws (A), and remove the lamp inverter unit (1) from the LCD holder (2).

2. Remove the sheets from the LCD holder (2).

3. Pull the LCD glass retaining (3).

4. Remove the FPC from Arm(D) and (E).

5. Disengage the claw (B), and slide the LCD panel (4) in the (C) direction to remove the LCD holder (2).

Note:

When handling the prism sheet, diffusion sheet, light guide plate and reflection sheet do not touch any parts other than lugs and sides. With the light guide plate and reflection sheet between reflectors of lamp, install them together with the lamp ass'y.

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

3-3. REPLACEMENT OF CCD SENSOR

3-3-1. BEFORE REPLACEMENT

1) The CCD image sensor is more sensitive to electrostatic breakage than C-MOS LSI. Therefore sufficient means to prevent electrostatic damage must be taken when it is replaced.

• Ground the soldering iron.

• Ground also the human body, using the wrist strap(through an 1 Mohm resistor).

• Until the CCD sensor is mounted on the PWB, fit it to the conductive sponge, and short-circuit the foot lead.

2) Take utmost care so that the surface glass of CCD sensor and optical filter are not contaminated or damaged. If any contamination is found, for example fingerprint, wipe it off with silicon paper or clean chamois skin.

3) When replacing the CCD sensor, perform quick soldering with a soldering iron which is grounded to prevent static electricity.

Index Mark

JAPAN

SHARP

LZ2423H5

YYWWXXX

14 8

CCD Rear face

3-3-2. REMOVAL OF CCD

1) Unsolder the CCD sensor leads from the sensor PWB.

2) Take out the sensor PWB.

3) Remove the two screws (6), and remove the sensor holder and CCD sensor.

3-3-3. MOUNTING OF CCD

1) Place the lens unit upright (since the CCD sensor mount ID faces upward, care must be taken so as not to damage the front lens of unit), put the crystal filter first and then the dust protection rubber into the CCD holder of lens unit. Set the crystal unit with its thin side toward the lens unit.

2) Place the CCD sensor so that the its No. 1 pin is at the right lower (Positioning hole to be at right), and put the CCD sensor into the CCD holder. For smooth and tight fitting, press the right lower part of back of CCD sensor, and then press the left upper part.

Note: Pay attention to the direction of CCD sensor.

3) Place the sensor holder so that its two round markings be visible, and fix the sensor holder with the two screws ((6)LX-HZ0013TAFF).

4) Mount the sensor PWB so that the CCD sensor leads go thorough the PWB holes.

5) Solder the CCD sensor lead to the sensor PWB.

Note: Take care not to apply excessive heat.

CCD Sensor

Crystal

Sensor Holder

Lens Side

The THIN SIDE faces the lens

CCD Side

Rubber

The mark must be on this face.

Mark

(6)

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

4. MECHANISM ADJUSTMENT

4-1. MECHANISM CHECKING/ADJUSTING JIGS, TOOLS AND PARTS

4-1-1. Mechanism checking/adjusting jigs and tools

<Note: The entries of list>

Configuration

1. Name

2. Part No.

3. Code * Model, Application

1. Cassette torquemeter for PB

2. JiG8T-012

3. CV

* (10 g·cm/25 g·cm)

1. Master plane

2. JiGMP-MX7U

3. CG

For adjustment of Tu guide height and Si roller height and checking of reel disk height

1. Hex wrench

For loosening or tight-

ening of Motor stator (1.3mm)

1. Cassette torquemeter for VS-REW

2. JiG8T-032

3. CV

* (50 g·cm/25 g·cm)

1. Height adjusting jig

2. 9DAGH-E31S

3. BM * For adjustment of Tu

guide height and Si roller height

1. Tension Band and Plate Adjusting Jig

2. JiGDRiVERMX7U2

3. BN

1. Torque gauge

2. JiGTG0045

3. CN * For measurement of loading brake torque

1. Tu guide height adjusting driver

2. 9EQDRiVER-V712

3. BL

1. Torque gauge head

2. JiGTH-MX7U

3. BS * For torque gauge listed left

1. Guide roller height adjusting driver

2. JiGDRiVERHMX7U

3. BU * Bit shape (See the figure above.)

1. Alignment tape

2. VR2DB0PS

3. BT

TAPE CONTENTS

VIDEO IMAGE AUDIO TIME MONOSCOPE L-CH 400Hz 30MIN

R-CH 1,000Hz

1. Torque driver (1.5 kg·cm)

2. JiGTD1500RT0H

3. CB

Tolerance±0.1

1.8

Edge

thickness 0.5

(1) Slide calipers (2) High-precision screw-

drivers (Phillips head, slotted head)

(3) Long-nose pliers

(with thin jaws)

(4) A pair of tweezers

4-1-2. Parts for periodic inspection and maintenance

1. Oil COSMOHYDRO HV100

* Cosmo Oil Co., Ltd.

1. Greases Morycoat YM-103/X5-6020

* Dow Corning

1. Screw locking agent (1401B)

* Three Bond

1. Cleaning liquid (Industrial-use ethyl alcohol)

* Commercially available

item

1. Cleaning paper

2. JiGDUSPER

3. AP * Dusper ∑ (Sigma) (Ozu Co., Ltd.)

<Note: The entries of list>

1. Superfine swab * Commercially available

item

Configuration

1. Name

2. Part No.

3. Code * Model, Application

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

4-2. ITEMS AND TIMINGS OF INSPECTION AND MAINTENANCE

The mechanism of VCR needs the following periodic inspection and maintenance in order that it maintains its high quality. Also, after the machine is repaired, execute the following maintenance and checks regardless of how long it has been used.

4-2-1. Inspection and maintenance list

Checking/Maintenance point

Tape travel system

Tape running route (Refer to Section 4-4)

Drum (Refer to Section 4-4)

Video head

Timing belt Pinch roller Capstan D.D. motor

Driving system

Relay Pulle shaft Pulle gear shaft

Drive gear shaft

Loading motor • Replace if failure (abnor-

Performance

Abnormal sound

check

PB/VS-REW take-up torque PB/VS-REW back tension torque Tu brake

500 1,000 1,500 2,000 3,000

★★★★★

Used time (hrs.)

★★★

∆∆∆

★★★

★★★ ★★★

★★★

Possible symptom

encountered

• Lateral noise

• Unclean head

• Screen shaking

• Improper S/N ratio

• No color appears.

• Tape does not run.

• Tape slackens.

• Screen shakes.

• Abnormal sound • Apply oil.

• Not ejectable

• The specific mode cannot be set.

Remarks

Rollers

• If abnormal rotation or deflection (significant) is found, replace the roller. Other than rollers

• Clean the tape contacting areas. Be sure to use the specified cleaning agent.

• Replace if failure is found.

(Oil : COSMOHYDRO

HV100) Note: After oil is applied to the drive gear shaft, slightly wipe it off with swab.

mal sound) is detected.

• If conformance to the

standard is not ensured, replace part.

Oil: COSMOHYDRO HV100 Greases: MORYCOAT YM-103/X5-6020 Screw locking agent: THREE BOND 1401B Cleaning liquid: Industrial ethyl alcohol

: Replace. : Clean. ∆ : Apply oil. ★ : Check.

4-2-2. Notes and cautions

(1) Any cut washers, once removed for parts replacement or for other

reason, must be replaced with new ones.

(2) The mechanism of this VCR does not involve any volume adjustment.

If the specified range is not satisfied, either cleaning or replacing the parts is required.

(3) Oils

a) Be sure to use the specified oils (different viscosity may cause

troubles).

b) For the bearings, be sure to use oil that is free form dust and other

foreign substances. (Dust or foreign substance contained in the oil may cause wear or seizure of the bearings.)

c) A drop of oil represents the amount of oil which is held on the needle

top as shown in Figure 1. (4) The circuit repair must be executed without removing the V frame. (5) For operating the mechanism alone, actuate it with the motor. The

terminal-to-terminal voltage must be DC4V or less.

(6) When installing the cassette control, press the part A shown in Figure

2. *Do not press other parts.

(7) Take care so that the whole mechanism is not deformed.

Oil

φ1.5 or less in diameter

Figure 1

Figure 2

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

4-3. MECHANISM CHECKS AND ADJUSTMENTS

The description given below relates to the general field services, but does not relate to the adjustment and replacement that require high level equipment, jigs, and technical skills. In order to maintain the initial characteristics of the machine, it is necessary to execute the maintenance and check and to prevent damage to tapes and other parts. For adjustments which need jigs, be sure to use the jigs.

Notes and cautions

(1) For mechanism checks and adjustments, be sure to use the AC adapter as the power supply. (2) For running the tape, be sure to install the cassette control ass’y in advance. (If the cassette control ass’y is to be removed

subsequently after its installation.)

4-3-1. Checking the reel disk height

(1) Remove the cassette control ass’y. (2) Taking due care not to let the master plane touch the tape running areas such as the drum and the guide rollers, position the

master plane so that the two guides (A and B in Figure 1) are set in the holes of master plane, then properly set it in the mechanism.

(3) Using the slide callipers or the like, check that the distance from the upper surface of master plane to the reel support surface

of the S/Tu reel disk is within the specified range. (Figure 2)

Note:

When measuring, do not apply excessive force to the reel support surface of reel disk.

(4) If the measurement is not within the specified range, replace the reel disk ass’y. (5) Check the items (2) to (4) above in the following two modes.

a) Standby mode b) Playback (recording) mode

Reel support surface

4.4 ± 0.15

Figure 2Figure 1

4-3-2. Checking the take-up torque for playback (recording)

(1) Set the torque cassette (JiG8T-012) in position, and check in the SP-mode recording mode (tape recorded in SP mode) that

the torque at the tape taking-up side is within the standard range. Standard of take-up torque for SP-mode recording (playback):

9 ± 3 g·cm with ripples less than 4 g·cm

(If the torque ripples appear, read the center value of torque between the ripples.)

4-3-3. Checking and adjusting the back tension torque for playback (recording)

(1) Checking

Set the torque cassette (JiG8T-012) in position, and check in the SP-mode recording mode (tape recorded in SP mode) that the torque at the tape supply side is within the standard range. Standard of back tension torque for SP-mode recording (playback):

8 ± 2 g·cm with ripples of less than 2 g·cm (Torque ripple must be within 8 ± 2 g·cm)

(2) Adjustment

If the back tension torque is not within the standard range, adjust the tension spring hooking position. If the back tension is too high, hook the spring in the direction A. If the back tension is too low, hook the spring in the direction B.

Note:

After back tension torque adjustment be sure to check the tension pole position.

4.4 ± 0.15

4-3-4. Checking and adjusting the tension pole position

(1) Check

When it begins to wind the P5-120 tape check whether the tension pole is in the specified position to the Si roller as shown in the figure. If it is not in the specified position, remove the cassette and adjust the position in the following procedure.

(2) Adjustment

1. Don’t set up any tape, and select the PB mode. (Refer to Item 4-5-1-(4).)

2. Slightly loosen the screw (a) (to such a strength as the T band holder B can be moved).

3. If the tension pole is in the inner position than specified, dislocate the T band holder B in the arrow (A) direction and if it is in the outer position, dislocate it in the arrow (B) position. Then, tighten the screw (a). (For reference, dislocate it 0.4 to 0.8 mm outer from the position specified above.) For the position adjustment, it is convenient to use the position adjustment screwdriver (JiGDRiVERMX7U2). (Set it in the hole (C).)

4. Check the position in the “(1) Check” procedure described above.

5. If it is not in the specified position, repeat the adjusting procedure 1 thru 3.

Notes:

• Tightening torque of screw (a) 70 mN·m

• To check the position, be sure to run the tape.

• If the cassette compartment assembly is removed, it makes the work easier. (Refer to Item 4-5-3.)

T Band Holder B

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

3 – 0.5

Si roller

Tension pole

Hole (C)

(B)

(A)

Screw (a)

4-3-5. Checking the take-up torque for rewind playback (VS-REW)

(1) Remove the cassette compartment ass'y and set to the sensor OFF mode. (2) Set the torque gauge (JiGTG0045) on the S reel disk, and check in the rewind playback (VS-REW) mode that the torque at the

supply side is within the specified range.

Standard of take-up torque in rewind playback (SP mode):

31 ± 5 g·cm with ripples less than 5 g·cm.

(If the torque ripples appear, read the center value of torque between the ripples.)

4-3-6. Checking the back tension torque for rewind playback (VS-REW)

(1) Set the torque cassette (JiG8T-032) in position, and check in the rewind playback (VS-REW) mode that the torque at the tape

take-up side is within the specified range. Standard of back tension torque in rewind playback (SP mode):

14 ± 5 g·cm with ripples less than 5 g·cm

(If the torque ripples appear, read the center value of torque between the ripples.)

VL-A111S/H/E/AH131S/H/E

Drum

Reel

Tension pole

Si roller

Sup GR

Sup tilted pole

Tu tilted pole A

Tu GR

Tu tilted pole B

Capstan shaft

Tu guide

Pinch roller

Upper flange

Lower flange

Height adjusting jig

Master plane (JiGMP-MX7U)

Rise waveform

REV OK Playback

REV NG Playback

VL-AH151S/H/E

4-4. ADJUSTMENT OF MECHANISM TAPE RUNNING SYSTEM

4-4-1. Preparation for adjustment

(1) Clean the tape running areas (guide poles, rollers, drum,

Capstan shaft, Pinch roller) (Figure 1)

(2) Connect the oscilloscope to the following TPs.

RF output..... TL7410

H-SW-P ....... TL7417

GND............. TL7413

(3) Playback the alignment tape (VR2DB0PS). (4) Ascertain that each guide is free from remarkable curl. (5) Ascertain that the RF waveform of inlet and outlet sides is flat

on the oscilloscope (Figure 2, (a)). Unless the waveform is flat, (Figure 2, (b), (c)), make an adjustment as follows.

4-4-2. Adjusting the Sup GR and Tu GR

(1) Turn the Sup and Tu guide rollers to get the flat waveform at the inlet and outlet sides.

Inlet side Outlet side

(a) Normal

(b) Inlet side waveform is disturbed.

Figure 2

4-4-3. Adjusting the Si roller height

After replacement of the Si roller preset and adjust the Si roller height. (1) Si roller height presetting

Adjust the height from the upper surface of mechanism chassis to the upper surface of lower flange with the aid of jig. Then lower it by 90° (clockwise).

(2) Adjusting the Si roller

1 Playback the tape to set the V/SR mode. 2 Ascertain that the tape is not folded on the lower flange (B) of Si roller. (Figure 4) If tape folding is found, turn the upper flange (A) of Si roller with the driver (clockwise) to eliminate the folding. 3 Playback the alignment tape (VR2DB0PS). 4 Adjust the Sup GR and Tu GR by the procedure described in section 4-2 above. 5 After V/S F,R perform playback so as to ascertain that the waveform rises horizontally within 2 seconds. 6 Unless the normal waveform is obtained (Figure 5), turn counterclockwise the upper flange (A) of Si roller, and repeat the step

(5) above. Repeat the steps (5) and (6) until the normal waveform is obtained. At this time ascertain that the inlet travel does not change in the normal playback state. If any change is found, adjust the Sup GR, and redo the step (5).

Si roller

REV mode

Upper flange (A)

Tape running system (Figure 1)

Figure 3

Lower flange (B)

Tape must be free from folden

Figure 4

Figure 5

4-4-4. Adjusting the Tu guide

C 1/8A

Capstan shaft

Tu guide

Tape slackness

Tu GR

Tension pole

Si roller

Sup tilted pole

Sup GR

Drum

Tu GR

Pinch roller

Tu guide

Tu tilted pole

Upper flange

Lower flange

Height setting jig

Master plane (JiGMP-MX7U)

After replacement of Tu guide preset and adjust the height. (1) Tu guide height presetting

Adjust the height from the upper surface of mechanism chassis to the upper surface of lower flange with the aid of jig.

(Figure 6)

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

Figure 6

(2) Adjusting the Tu guide

(Figure 7)

1 Playback the alignment tape (VR2DB0PS). 2 Check that the tape runs at the same height near the capstan shaft in case of

V/S F and V/S R.

3 If the tape running position in case of V/S R is higher than the tape running

position in case of V/S F, turn clockwise the Tu guide nut. If the tape running position in case of V/S R is lower than the running position in case of V/S F, turn counterclockwise the Tu guide nut.

4-4-5. Checking the V/S F and R waveforms (Figure 8)

(1) Playback the alignment tape (VR2DB0PS), and set the V/S R mode. At this time

ascertain that the waveform crest pitch is kept constant for more than 5 seconds.

(2) Set the V/S F mode. At this time ascertain that the waveform crest pitch is kept

constant for more than 5 seconds. Unless the constant pitch is obtained, execute the checks of Section 4-2, 3, and

4-4-6. Checking after adjustment

(1) Envelope check

1 Playback the alignment tape (VR2DB0PS). 2 Ascertain that the envelope maximum to minimum ratio is 65% or more. (Figure 9) 3 Ascertain that the waveform does not change remarkably. (Figure 10)

MAX

MIN

Capstan shaft

Pinch roller

Nut

Figure 7

abcd

a b c d

Figure 8

Figure 9

MIN

65 (%)

MAX

Figure 10

(2) Rise check

1 Playback the alignment tape (VR2DB0PS). 2 Once eject the cassette, and then load it again. 3 Set the playback mode, and ascertain that the RF waveform rises horizontally

within 2 seconds. At this time ascertain that there is no tape slackness near the pinch roller.

4 After V/S F, R and FF/REW execute playback, and ascertain that the RF

waveform rises horizontally within 2 seconds. At this time ascertain that there is no tape slackness near the pinch roller.

(3) Checking the tape running

1 When the tape is played back, ascertain that tape lift and tape curl of 0.3 mm

or more do not occur at the lower flange of Si roller, upper flange of Sup GR, upper flange of Tu GR, and upper/lower flange of Tu guide.

2 In case of V/S F and R ascertain that no curl is found at each flange.

4-4-7. Checking and adjusting the playback switching point

Refer to the description of playback switching point adjustment in section of VCR circuit adjustment.

Figure 11

Figure 12

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

4-5. MECHANISM ASSEMBLING AND PARTS REPLACEMENT

(DISASSEMBLING AND ASSEMBLING)

Below is given an explanation of assembling of mechanism and its parts replacement. The removal of cabinet and the PWB is explained in the relevant service manual.

Notes

1 After removal of cut washers be sure to replace them with new ones. 2 Do not place the mechanism upside down on the table. Otherwise, the mechanism part may be deformed or damaged, resulting

in malfunction.

3 When assembling, take care so that screw, washer or other foreign substance do not enter. Otherwise mechanism malfunction

may occur.

4 Be sure to use the specified cleaning liquid, oil, grease and screw lock as listed below. Otherwise mechanism malfunction may

occur. Oil: Cosmo Oil Co., Ltd.

COSMOHYDRO HV100

Grease: Dow Corning

MORYCOAT YM-103/X5-6020

Screw lock: THREE BOND

1401B

Cleaning liquid: Industrial-use ethyl alcohol

4-5-1. Mechanism modes

To actuate the mechanism, apply DC3 to 4V to the L motor. At this time the L motor connector must have been disconnected in advance. Below is given an explanation of the mechanism mode necessary for mechanism check, adjustment and replacement.

(1). EJ (Eject) mode (See Figure 1)

In this mode, it is mechanically positioned to eject the cassette. It is the position where the EJECT lever is moved the farthest in the direction A in the S/B mode. (In this mode, the cassette compartment assembly can not be locked.)

EJECT Lever

EJ mode

Figure 1

(3). STOP mode (See Figure 3)

In the STOP mode the S and T pole bases are pressed in the STOP position (or Rec Lock position in CAMERA mode), and the S brake is in contact with the S reel disk.

Slide chassis

(2). S/B (Standby) mode (See Figure 2)

When the cassette is loaded, the mechanism is set to the S/B mode. In this mode the slide chassis is most far from the drum and the Eject lever is in position shown in Figure 2 (in position where the cassette control ass’y can be locked).

Slide chassis

EJECT Lever

S/B mode

Figure 2

(4). PB mode (See Figure 4)

In this mode, it is positioned for the playback, record and so on. It is the mechanical position where the pinch roller is pressed against the capstan shaft to make the pinchpressing spring the most longest.

S pole base

S reel disk

S brake

STOP mode

Figure 3

T pole base

Capstan shaft

Pinch Spring

Pinch roller

PB mode

Figure 4

VL-A111S/H/E/AH131S/H/E

Fixing screw

Drum base Earth spring

Upper/lower drum ass'y

Positioning hole

VL-AH151S/H/E

4-5-2. Cassette control ass’y

(1) Set the unit to the EJECT mode, and let the housing stand upright. Or set the

unit to the STANDBY mode, press the lock lever in the arrow direction, and

let the housing stand upright. (See Fig. 5: in the direction

pushing in the direction

, slightly lift the housing by hand to release the lock

or b) (When

lever.) (2) Remove the four screws 2 and take out the down guide 3. (3) Slide the two link support shafts

openings (4) Deflect the roller shafts

on the slide chassis. (Be careful not to deform the inner links.)

on their respective slide chassis slits (two at

and the two roller shafts

a little inward to get them out of the round openings

to the round

and two at f).

(1) Set the unit to the STANDBY mode.

(2) Deflect the roller shafts

on the slide chassis. (Be careful not to deform the inner links.)

(3) Align the flanges of roller shafts

sliding the flanges, fit the support shafts

a little inward, and fit them into the round openings

with the slide chassis slits

in the slide chassis slits e, and

. While

slide them until they reach the slits. (4) Attach the down guide. (While pressing the guide in the direction i, tighten

the screws until the gap

becomes zero.)

Tightening torque: 70±7 mN·m (0.7±0.07 kg·cm)

4-5-3. Actuating the mechanism with the cassette

between the down guide 3 and the support shafts

Screw tightening torque (4 locations)

0.069±0.007 N·m (0.7±0.07kg·cm)

control ass’y removed

(1) Turn on the power supply with the cabinet and camera unit removed,

referring to the Service Manual (so as to actuate the mechanism). (2) Put the cap on the light guide. (3) Press the cassette control down switch through the adhesive tape in

the arrow direction so as to turn it on. At this time take care to avoid it

in contact with the cassette. Keep the switch pressed (if the switch is

turned off, unloading occurs).

Note: To set the Rec mode, press the pin (marked with the asterisk *)

of recognition switch (this operation is not necessary in other modes).

4-5-4. Drum and Drum base

*The upper drum and the lower drum have been replaced until now, respectively. However, for this model, they are replaced as the upper/lower drum ass'y. When replacing the drum, put on gloves and be careful not to damage it.

Adhesive tape

Cassette control down switch

Lock Lever

Down Guide

Screw

Figure 5. Lock lever section

Figure 6

Cap

Light guide

Recognition switch

<Disassembling> (1) Drum base (Common to both types)

<Reassembling> Follow steps opposite to the drum disassembling method. (1) Drum base

(2) Drum ass'y (3) Tape guide

Remove the three fixing screws to remove the drum base as shown in the Figure 1.

Adjust the positioning pins and secure the drum base with screws. (3 pcs.) Install the drum ass'y to the main chassis and secure it with screws. (3 pcs.) Adjust the positioning pins and secure the tape guide with a screw. (1 pc.)

Figure 1

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

4-5-5. Phase matching

The phase of the following parts must be matched as shown in the figure below. (Ascertain that the marks and round holes align.)

(1) Lo relay gear (2) Main cam (3) Sub-cam (4) Mode switch

Phase matching mark (Round hole)

Lo relay gear

Mode switch

4-6. MECHANISM ASSEMBLING METHOD

(1) Adjust the phase of each part. (2) Install screws and washers. (3) Install the segment gear, T arm guide, the M-function

lever and the eject lever.

T arm guide

Segment gear

M-function lever

Move claw to rear side.

Phase matching mark ( Mark)

Phase matching mark (Round hole)

Move claw to rear side.

Item Tightening torque Quantity a S Tight M1.4 x 3 70mN·m (0.7kgf·cm) 1 B ø0.8-ø3-t0.2 1

VL-A111S/H/E/AH131S/H/E

Segment gear

Su arm Ass'y

T Lo arm Ass'y

Square Hollow Mark

Triangle Mark

Edge A

Round Hole

Align the marks on the parts.

VL-AH151S/H/E

(4) Install the loading block assembly and the capstan motor. (5) Install the drive gear. At this time, pay attention to the

direction of gear. (The small gear must be located in the chassis side.)

Loading motor

Capstan motor

Move FF downwards

Install the motor under this plate.

(7) Install the guide rail assembly taking care to position it

correctly.

Make sure not to deform the arm.

Drive gear Position the smaller gear towards the chassis.

Item Tightening torque Quantity A S Tight M1.4 x 2.5 70mN·m 1 a S Tight M1.4 x 3 70mN·m 4

(6) Install the guide rail assembly.

Insert the part in the rail and slide it down.

Make sure not to deform the arm.

Item Tightening torque Quantity A S Tight M1.4 x 2.5 70mN·m 2 B S Tight M1.4 x 4 40mN·m 1 C ø0.8-ø3-t0.2 1 D ø2.1-ø5-t0.25 1 a S Tight M1.4 x 3 70mN·m 1

Insert the part in the rail and slide it down.

VL-A111S/H/E/AH131S/H/E

T arm guide

Slide this part towards the T arm. Place the slide chassis on the guide rail.

Main cam pin

Sup reel base

Insert the main cam pin into the hole of cam of slide chassis.

VL-AH151S/H/E

(8) Install the drum assembly in the chassis. (9) Install the tape guide in the drum assembly. (10) Install the Si roller.

Si roller

Roller spring

(11) Install the slide chassis.

Tape guide

Drum assembly

Chassis drawing

Item Tightening torque Quantity A M1.4 x 1.5 ø4.5 40mN·m 1 B M1.4 x 1.5 ø3.5 40mN·m 3

(12) Install in the following order: T guide lever spring, T guide

lever, pinch lever.

(13) Install the swing arm.

Pinch lever

(14) Install the right guide holder.

Tu guide lever

Hang on a hook

Tu guide lever SPR

Hang on a hook

Take care of position.

Pinch lever The pinch lever

is positioned on the stopper.

Stopper

Secure on back side

Claw

Swing arm

Claw

Take care not to bend the tension band during assembly or disassembly.

Item Tightening torque Quantity A S tight M1.7 x L5.3 100mN·m 3 B S tight M1.7 x L2.5 60mN·m 1

Item Tightening torque Quantity A S tight M1.4 x 2.5 70mN·m 1 B CW ø0.8-ø3-t0.2 70mN·m 1

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

5. ADJUSTMENT OF THE ELECTRICAL CIRCUITS

5-1. BEFORE ADJUSTMENT

· Electric circuit adjustment becomes necessary, in most cases, when any of the wear mechanical parts or the video head has been replaced. Before starting the electric circuit adjustment, be sure to check that the mechanical parts work well (i.e., the mechanical parts have all been perfectly adjusted). In case a trouble or troubles are found in the electric circuitry, be sure to pinpoint the cause(s) by using the measuring instruments described below. After locating the trouble spot(s), then proceed to repair, replacement or adjustment. Do not change the positions of the controls when adequate measuring instruments are not available.

· In order to implement a higher-density, smaller machine, most of the electric circuit parts used on the Circuit Boards are of smallsized, surface-mounted type. For replacing part(s) as after-sales, service, work with a soldering iron as speedily as possible. The heat resistance of the surface-mounted components is poor, when compared with the larger-sized discrete parts used for television sets and stationary decks, owning to their small sizes. Therefore, exercise due care to avoid long-time exposure of the pins of these parts to the heat of the soldering iron which may possibly damage them. Such care should be exercised especially for chip-layer capacitor replacement. It is advisable to use a temperature-controlled ceramic soldering iron (temperature at the tip: 250 C, contacting time: less than 5 seconds).

5-2. If adjustment is required

The electric circuit needs to be adjusted if:

1 The mechanism (including H/A PWB) is replaced. 2 The lens (including CCD PWB) is replaced. 3 The LCD panel is replaced. 4 The main PWB is replaced.

PROM on the IC705 and IC002 are replaced.

5 E

5-3. E2PROM setting

5-3-1. Data setting procedure

0) Remove the backup battery (CR2025).

1) Move the switch on the main unit to VCR for “VTR ADJ”, and to CAMERA for “CAM ADJ”.

2) Example: For “VTR ADJ” (Basic operations are the same as “CAM ADJ”.)

1 After pressing the “CONTINUE” key on the service remote control (RRMCG0033TASA), press the “VTR ADJ” key. 2 Select the corresponding address using the “FF” or “REW” key on the service remote control, and confirm it with the “PLAY” key. 3 Select the target data with the “FF” or “REW” key and press the “PLAY” key to confirm the selection. 4 If you want to change other address data sequentially, press the “STOP” key and repeat steps 2 and 3.

123

VTR ADJ 0000

Flashing

3) Data is written in E

PROM by entering the stand-by mode and removing the AC adapter and battery.

5-3-2. [When IC705 is replaced]

1) Following the procedures to change E2PROM data, enter and confirm the address data in (Table 1) and (Table 2).

2) Perform adjustment of electric circuit, head switching, recording current, audio circuit, and LCD circuit in this order.

5-3-3. [When IC002 is replaced]

1) Following the procedures to change E2PROM data, enter and confirm the address data in (Table 3).

2) Perform adjustment of the lens and then camera signal process.

VTR ADJ 0003 00

VTR ADJ 0003 60

Flashing stops with “PLAY” key

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

5-3-4. Setting value

Table 1) When IC705 is replaced

MODEL

VTR ADJ

A111S A111H A111E AH131S AH131H AH131E AH151S AH151H AH151E

ADD. DATA DATA DATA DATA DATA DATA DATA DATA DATA

Model

Destination

Specification

Menu 1

Menu 2

Table 2) When IC705 is replaced

VTR ADJ DATA

ADD. A111 AH131 AH151 1 007 02 02 02 2 01E 30 30 30 3 025 01 01 4 02F 40 40 40 5 10E 15 15 15 6 10F 5E 5E 5E 7 151 12 12 8 197 - F4 F4 9 19A - F0 F0 10 19E 40 40 40 11 19F 0 00 0012 1A1 14 14 14 13 1A2 00 00 00 14 1D1 20 20 20 15 209 - - 08 16 210 A6 A6 17 211 0A 0A 18 212 0A 0A 19 213 28 28 -

* Before starting PWB adjustment, write the stipulated ADD DATA in EEP_ROM and confirm it.

01 00 00 00 00 00 00 00 00 00 09 FF FF FF FF FF FF FF FF FF 02 0A 0D 0C 0A 0D 0C 0A 0C 0C 0A F5 F2 F3 F5 F2 F3 F5 F2 F3 03 60 60 60 00 00 00 00 00 00 0B 9F 9F 9F FF FF FF FF FF FF 04 00 40 40 00 40 40 00 40 40 0C FF BF BF FF BF BF FF BF BF 05 00 00 00 00 00 00 00 00 00 0D FF FF FF FF FF FF FF FF FF

VTR ADJ DATA

ADD. A111 AH131 AH151 20 228 E0 E0 21 229 87 87 22 22A 60 60 23 22B 01 01 24 22C 20 20 25 22D 0E 0E 26 22E 08 08 27 22F 00 00 28 230 40 40 29 231 8E 8E 30 232 01 01 31 233 00 00 32 234 31 31 33 235 96 96 34 236 AA AA 35 237 0A 0A 36 238 72 72 37 239 00 00 -

Table 3) When IC002 is replaced

CAM DATA

ADJ A111/AH131 AH151

ADD. S/H E/EW/EX S/H EW 1 100 4D - 2 10B 0B - 3 10C 0B - 4 10E 43 - 5 1B2 06 - 6 1B3 00 - 7 314 - 0030 - 0030 8 317 - 0020 - 0020 9 318 - 0020 - 0020 10 31E - 0080 - 0080 11 031F - D0 - D0 12 0322 - D0 - D0 13 0094 32 14 00AC 01

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

5-4. TEST mode

TEST No. Title Contents

1 Sensor Off All the sensors are off except for the cassette control switch, DEW sensor, and battery

sensor. 2 Mecha Adjustment mode ATF sampling is restricted to the central part. 3 Shut Off Adjustment Shutoff voltage value is written in E2PROM. 4 Error Display — 5 PASS mode Track shift (1/4 shift) 6 Cam Adjustment mode — 7 VCR Adjustment mode — 8 Head Switching Point ADJ. If “TEST 8” is selected for normal tape playback, Head Switching Pint is automatically

adjusted.

Note: If “T-03” is selected in the CAM mode while a recordable tape is loaded, the unit starts recording automatically.

1 Select No with “FF” or “REW” key. 2 Confirm with “PB” key.

T-01

5-5. Battery shutoff voltage adjustment

1) Supply power to the main unit, using the variable-voltage DC power supply (range of 2.5V to 5.0V).

2) Set the CAM/OFF/VCR SW to CAM to switch to the camera mode.

3) Load a recordable tape and set the main unit to CAM REC. PAUSE.

4) Set the main unit to TEST mode No. 3, and start recording.

5) Measure voltage between TL2911(+) and TL2914(GND), and adjust the supply voltage to 3.1V.

6) The adjustment is complete if "BATTERY" is displayed on the monitor screen for a second when the PLAY key of operation unit is pressed.

7) The adjustment is regarded as proper if the auto shut-off is actuated after the warning is displayed when the TEST mode is cancelled.

* In case of automatic adjustment of shut-off voltage, adjustment is impossible if voltage is above 3.1V ± 0.2V.

If the adjustment is made at 2.9V or below, the low-voltage operation may become unstable.

5-6. VCR section adjustments

5-6-1. VCR section adjustments jigs

• Measuring instruments: *Color monitor TV set *Oscilloscope *DC cable (AC adapter accessory)

*Digital voltmeter *Frequency counter *Video extension cables *DC power supply *Signal generator *Vector scope *Audio generator (CR oscillator) *AV output cable (accessory) *AC adapter *Alignment tape (JiGWR5-5CSP) *Video recording tape (JiGWR5-8CSE) (For Y/C, audio and servo adjustments)

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

12345

1. Extension Cable Inverter~VCR (7pin

2. QCNW-1265TAZZ

3. AX

1. Operation Unit

2. QSW-Z0287TAZZ or RUNTKA010WJZZ

3. AW/AS

1. Connector fitting and withdrawing tweezers

2. 9EQPiNSET06GE

3. BR

1. Extension Cable Camera~VCR (20pin)

)

2. QCNW-1774TAZZ

3. BH

1. Battery Terminal Unit

2. QTANZ0146TAZZ

3. AK

1. Service remote control

2. RRMCG0033TASA

3. BT

1. Extension Cable Camera~VCR (24pin)

2. QCNW-1382TAZZ

3. BD

1. Extension Cable MECHA~VCR (70pin)

2. QCNW-1534TAZZ

3. BS

1. AV Jack Unit

RUNTK0355TAN1(A111S/H/AH131S/H/AH151S/H)

2. RUNTK0355TAZZ(A111E/AH131E/AH151E)

3. AS

· Alignment Tape

JiGWR5-5CSP (PAL) .......Normal 8 TAPE (MONO)

JiGWR5-8CSE (PAL) ...... Hi8 TAPE (MONO)

* Y/C Audio Alignment

AV JACK UNIT

DC-IN

MECHA UNIT

1. Extension Cable LCD~ VCR (24pin)

2. QCNW-1382TAZZ

3. BD

insulating sleeve

1. Connector fitting and withdrawing extractor

Configuration

1. Name 2. Part No. 3. Code

4. Note *Model, Uses Remarks

VCR UNIT

CAMERA UNIT

AV OUT

LCD UNIT

INVERTER

5-6-2. Procedure for VCR section adjustments

As the following explains all the procedures required for one series of adjustment for a VCR section, some of the items below are not necessary depending on the contents of its repair or adjustment.

E2PROM setting in 5-3-2. Adjustment of battery shutoff voltage in 6-5.

Recording current adjustment

Supply voltage adjustment/check

Head Switching Point adjustment

AUDIO circuit adjustment

LCD circuit /panel adjustment

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

5-6-3. VCR circuit adjustment

* Before adjusting the VCR circuit, make sure that the fixed value in 5-3-2 is written in

E2PROM.

· Test points on the video circuit board.

5-6-3-1. Supply voltage adjustment/check

POWER CIRCUIT ADJUSTMENT PROCEDURE

Turn on power

1. Adjust to CAM 15V

2. Check P-CON 4.9V

3. Check P-CON 3.3V

4. Check P-CON 3.1V

5. Check DSP 2.65V

6. Check DSP 1.85V

7. Check LCD 13.2V

8. Check LCD 7V

9. Check LCD -15.2V

POWER CIRCUIT ADJUSTMENT METHOD

Æ Input 7V from DC Jack, and set the power switch to the camera side. ` Do not fail to fix the back light unit before adjusting them.

1. Adjustment to CAM 15V

Make an adjustment so that the digital voltmeter indicates 15V

6. Checking of DSP 1.85V

Ascertain that the digital voltmeter indicates 1.85V ± 0.15V.

± 0.05V.

Measuring instrument Digital voltmeter Measuring terminal TL905 Adjustment address 32h(VTR ADJ) Standard 15V ± 0.05V

2. Checking of P-CON 4.9V

Ascertain that the digital voltmeter indicates 4.9V ± 0.1V.

7. Checking of LCD 13.2V

Ascertain that the digital voltmeter indicates 13.2V ± 0.2V.

Measuring instrument Digital voltmeter Measuring terminal TL901 Adjustment address Standard 4.9V ± 0.1V

3. Checking of P-CON 3.3V

Ascertain that the digital voltmeter indicates 3.3V ± 0.1V.

8. Checking of LCD 7V

Ascertain that the digital voltmeter indicates 7V + 0.4/-0.5V.

Measuring instrument Digital voltmeter Measuring terminal TL903 Adjustment address Standard 3.3V ± 0.1V

4. Checking of P-CON 3.1V

Ascertain that the digital voltmeter indicates 3.1V ± 0.1V.

9. Checking of LCD -15.2V

Ascertain that the digital voltmeter indicates -15.2V ± 1V.

Measuring instrument Digital voltmeter Measuring terminal TL9718 Adjustment address Standard 3.1V ± 0.1V

5. Checking of DSP 2.65V

Ascertain that the digital voltmeter indicates 2.65V ± 0.25V.

10.Checking of CAM -8V

Ascertain that the digital voltmeter indicates -8V ± 0.5V. Measuring instrument Digital voltmeter Measuring terminal TL916 Adjustment address Standard 2.65V ± 0.25V

10. Check CAM -8V

Æ Turn off power.

Measuring instrument Digital voltmeter Measuring terminal TL910 Adjustment address Standard 1.85V ± 0.15V

Measuring instrument Digital voltmeter Measuring terminal TL907 Adjustment address Standard 13.2V ± 0.2V

Measuring instrument Digital voltmeter Measuring terminal TL904 Adjustment address Standard 7V + 0.4/-0.5V

Measuring instrument Digital voltmeter Measuring terminal TL906 Adjustment address Standard -15.2V ± 1V

Measuring instrument Digital voltmeter Measuring terminal TL909 Adjustment address Standard -8V ± 0.5V

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

5-6-3-2. Head Switching Point Adjustment

1)Play back the alignment tape (JiGWR5-5CSP)

2) Press the “CONTINUE” key and “TEST SEL.” key on the adjustment remote control to set the test mode. (At this time the numeral of “T-01” blinks.)

3) Using the “FF” and “REW” keys, select “T-08”, and press "PLAY" key to set the SW-P adjustment mode.

Measuring instrument Mode Playback Adjustment address 30h Tape Alignment tape (JiGWR5-5CSP)

4)When the adjustment is completed, "HSWP" is displayed and the tape is ejected. When the adjustment is not proper, "NG" is displayed in the red frame of the LCD.

Only when the satisfactory result was not obtained by the adjusting method described above, perform the following adjustment.

1)Connect each signal to the oscilloscope.

1ch: SEP Y OUT ...... TL1453

2ch: H-SW-P ............ TL7417

GND: GND ................. TL1454

2)Play back the alignment tape (JiGWR5-5CSP)

3)Press the “CONTINUE” key and “VTR ADJ” key on the adjustment remote control to set the VCR adjustment mode.

4)Select the address 30h, set the sync slope of oscilloscope to (–), and adjust the data with “REW” and “FF” so that the interval between the trigger point and the V sync signal is set to 6H, and

3H 3H

fix the data with the “PLAY” button. (See Figure 5.1.1.)

5)Then, set the sync slope to (+), and ascertain that the interval between the trigger point and the V sync signal has been set to 6H. (See Figure 5.1.2.)

6)Keep the STOP key pressed for about 3 seconds to exit from the adjustment mode.

Figure 5.1.1

Oscilloscope

3H 3H

V sync signal

Figure 5.1.2

V sync signal

5-6-3-3. Y/C recording current adjustment

1. Y recording current adjustment

· Hi-8model (AH131/AH151) VTR ADJ Mode Address Measuring point Adjustment standard Measuring instrument

REC Y current adjustment (Hi-8)

REC Y current

VCR STOP

adjustment (Nor 8)

· Nor8model (VL-A111) VTR ADJ Mode Address Measuring point Adjustment standard Measuring instrument

REC Y current adjustment (Nor 8)

VCR STOP

(1) Enter the VCR STOP mode. (2) Select the above applicable address with the adjustment remote control. (3) Measurement signal is output to TL9413. (4) Adjust the amplitude so as to get the adjustment standard value at TL9413(Sig) and TL9414(Gnd).

2. C recording current adjustment

· Hi-8model (AH131/AH151) VTR ADJ Mode Address Measuring point Adjustment standard Measuring instrument

REC C current adjustment (Hi-8)

REC C current

VCR STOP

adjustment (Nor 8)

· Nor8model (VL-A111) VTR ADJ Mode Address Measuring point Adjustment standard Measuring instrument

REC C current adjustment (Nor 8)

VCR STOP

3F ME 160±5mVP-P 40 MP 115±5mVP-P 41 ME 165±5mVP-P

TL9413(Sig) TL9414(Gnd)

42 MP 135±5mVP-P

TL9413(Sig) TL9414(Gnd)

MP 135±5mVP-P

43 ME 150±5mVP-P 44 MP 105±5mVP-P 45 ME 185±5mVP-P

TL9413 (Sig) TL9414 (Gnd)

46 MP 160±5mVP-P

TL9413 (Sig) TL9414 (Gnd)

MP 160±5mVP-P

Oscilloscope

Standard value

Oscilloscope

Standard value

VL-A111S/H/E/AH131S/H/E

G R

VL-AH151S/H/E

5-6-3-4. Adjustment of audio circuit

1. Adjustment of filter f0

Measuring instrument Oscilloscope Mode PB Input signal (tape) JiGWR5-5CSP Measuring terminal TL605/AUDIO.OUT Adjustment address 33 (VTR ADJ) Set value Clear the waveform

Audio check (Check of recording/playback using the same unit)

(1) In the camera mode, perform recording with the sound input to the microphone. (2) Play back the recorded portion to check that the recorded sound is heard from the output terminal or built-in speaker. (3) If excessive noise is recorded, repeat steps (1) - (6) and check the recording/playback again.

1) Set the alignment tape (JiGWR5-5CSP).

2) Using the adjustment remote control (RRMCG0033TASA), set the VCR adjustment mode, and set the address “33” with the operation switch ("FF", "REW" key).

3) Play back the standard tape.

4) Using the operation switch ("FF", "REW" key), make an adjustment so that the most clear playback waveform is obtained on TL605.

5) Press the operation switch ("PLAY" key) to write the data.

6) Press the operation switch ("STOP" key) to exit from the address “33”. (The address “33” blinks.)

5-6-3-5. Adjustment of LCD display circuit

1. Inverter input Voltage Setting

VTR ADJ

Address Data

50 8F 51 8A 52 6F

2. Dac full-Scalle adjustment

Measuring point TL1801 (G-OUT) Address(VTR ADJ) 039 Mode VCR Adjusting method 1) Set the data of address 082 to 80, address 0A2 to 00, address 0A5 to 80.

2)Connect TL3804 to P-CON 3.1V.

3)Connect the Digital voltmeter to TL801 and adjust the DC volt.

4)Set the data of address 082 to 40, address 0A2 to 28. (Restore) Adjustment standard 0.78V ± 10mV Remarks ———————

3. R-W/B adjustment

Measuring point TL3814 (G-OUT) TL3813 (R-OUT) Address(VTR ADJ) 090 Mode VCR Adjusting method 1) Set the data of address 082 at the address 80.

2)TL3814 (G-OUT): Oscilloscope CH1 TL3813 (R-OUT): Oscilloscope CH2

3)Adjust P-P of TL3813 to make it larger then TL3814 by 0.15V.

4)Set the data of address 082 at the address 40. (Restore)

Adjustment standard ±0.1Vp-p Remarks ———————

4. B-W/B adjustment

Measuring point TL3814 (G-OUT) TL3815(B-OUT) Address(VTR ADJ) 092 Mode VCR Adjusting method 1) Set the data of address 082 at the address 80.

2)TL3814 (G-OUT): Oscilloscope CH1 TL3815 (B-OUT): Oscilloscope CH2

3)Adjust P-P of TL3815 to make it larger then TL3814 by 0.1V.

4)Set the data of address 082 at the address 40. (Restore)

Adjustment standard ±0.1Vp-p Remarks ———————

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

5. VCO adjustment

Measuring point TL3802 Address(VTR ADJ) 03E Mode VCR Adjusting method 1) Connect TL3803 to GND.

2)Connect the frequency counter to TL3802, and adjust the frequency. Adjustment standard 15.625kHz ± 100Hz Remarks ———————

6. H-position adjustment

Measuring point TL3802 Address(VTR ADJ) 03B Mode VCR Adjusting method 1) Connect the oscilloscope to TL3802, and adjust the pulse width.

Adjustment standard 2.8µsec ±0.15µsec Remarks ———————

7. COMMON PULSE adjustment

Measuring point TL1801 Address(VTR ADJ) 037 Mode VCR Adjusting method 1) Set the data of address 0A5 at the address 80.

2)Connect TL1800 to GND.

3)Connect the Digital voltmeter to TL1801, and adjust the DC Volt. Adjustment standard 6.85V ± 50mV Remarks ———————

8. COM-BIAS adjustment

Measuring point LCD panel display surface

Address(VTR ADJ) 03C Mode VCR Adjusting method 1) Set data of address 0A5 at the address 80 and address 082 at the address A9.

2)Set the illuminometer (TOPCON IM-3) on the LCD panel surface (do not allow entry of external light).

3)Connect the illuminometer to the oscilloscope.

4)Make an adjustment so as to minimize the ripple of output waveform. Response time: 0.6 sec

5) Adjust again if longitudinal stripe appears evidently.

6) Set data of address 082 at the address 40. (Restore)

* Or set to the point where the black is settled deepest with the grey scale signal.

Adjustment standard Minimum

Remarks Make an adjustment after aging for 5 minutes or more.

9. W/B adjustment

Measuring point LCD panel display surface Address(VTR ADJ) 090, 092 Mode VCR Adjusting method 1) Set data of address 0A5 at the address 80, and address 082 at the address A9.

2)Adjust so as to get the same white screen as that of standard monitor. (Adjust again, visually checking as stated in items 3 and 4.)

3)Set data of address 082 at the address 40. (Restore)

Adjustment standard Standard monitor Remarks Make an adjustment after aging for 5 minutes or more.

5-7. CAM section adjustment

E2PROM setting in 5-3-3. Supply voltage check

Iris basic adjustment

Lens adjustment

SYNC level adjustment

AE level adjustment

Black balance/AF noise level adjustment

WB (Indoor/Outdoor) adjustment

Color adjustment (hue, gain)

5-7-1. CAM section adjustment jigs

(1) Object, measuring instrument and jigs necessary for camera section servicing

• Gray scale chart • Color bar chart • Halogen light (2 pcs.)

• Vectorscope • Color temperature conversion filter • Color video monitor

• Extension cable HOYA "LB-165" • AC adapter

• Oscilloscope • Digital voltmeter • Service Remote Control

• Video output cable

Configuration

<Note: The entries of list> 1. Name 2. Part No. 3. Code

VL-A111S/H/E/AH131S/H/E VL-AH151S/H/E

1. Gray Scale Chart (390 x 520 mm)

2. JiGCHART-1

3. CP

1. Color Bar Chart (240 x 320 mm)

2. JiGCHART-4

3. DA

1. Color Temperature Conversion Filter

2. JiGHOYA-LB165

3. BN

Note:

1. Color temperature conversion filter may be obtained from HOYA Optics in your local market.

2. N: Indicates the new jigs.

• Connections for Camera Section Servicing

LENS

CCD PWB

20pin

SC6

24pin

Connect FPC between the camera and the VCR.

20pin

19pin

SC2

SC3

SC4

1. Service Remote Control

2. RRMCG0033TASA

3. BT

5-7-2. Procedure for CAM section adjustments

As the following explains all the procedures required for one series of adjustment for a camera section, some of them are not necessary depending on the contents of its repair or adjustment.

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