SHARP VL-PDIU, VLPD1U Service Manual

Page 1

SHARP SERVICE MANUAL

S38N4VL-PDI U/

LIQUID CRYSTAL DIGITAL CAMCORDER NTSC

MODEL VL-PDI u

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.

VL-PDl U

IMPORTANT SERVICE NOTES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..*..............................

SPECIFICATIONS

PART NAMES . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..~..........

DISASSEMBLY OF THE SET . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

MECHANISM ADJUSTMENT JIGS AND PARTS

INSPECTION AND MAINTENANCE

ITEMS AND INTERVALS

MECHANICAL ADJUSTMENTS AND CHECKS

TAPE RUNNING ADJUSTMENT

MECHANICAL SECTION ASSEMBLY AND PARTS REPLACEMENT

(DISASSEMBLY AND REASSENBLY)

1 O.ADJUSTlNG THE ELECTRICAL CIRCUITS 11 .USEFUL TIPS

12.SIGNAL FLOW DIAGRAM

13.BLOCK DIAGRAM

14.SCHEMATlC DIAGRAM 15SEMICONDUCTOR LEAD IDENTIFICATION

16.PRINTED WIRING BOARD ASSEMBLIES

17.REPLACEMENT PARTS LIST

18.PACKING OF THE SET

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ...

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..*.................... 8-l

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

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. . . . . . . ..~.........................................................................‘........................”

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. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..*.....................................

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.~.................................................,.......................................................~.....

Page

l-l 2-l 3-1

4-1

6-l

7-l

9-l

IO-I

11-I 12-1 13-I 14-I

15-1

16-1

17-1 18-1

SHARP CORPORA’lON

This document has been published to be used for

after sales service only.

The contents are subject to change without notice.

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VL-PDl U

1. IMPORTANT SERVICE NOTES

BEFORE RETURNING THE VIDEO CAMERA RECORDER

Before returning the video camera recorder to the user, perform the following safety checks.

1. Inspect all lead dress to make certain that leads are not pinched or that hardware is not lodged between

the chassis and other metal parts in the video camera

recorder.

2. Inspect all protective devices such as non-metallic control knobs, insulating materials, cabinet backs, adjustment and compartment covers or shields, isolation resistor/capacitor networks, mechanical insulators etc.

3. To be sure that no shock hazard exists, check for

leakage current in the following manner.

l Plug the AC line cord directly into a 120 volt AC outlet

(Do not use an isolation transformer for this test).

. Using two clip leads, connect a 1.5k ohm, IO watt

resistor paralleled by a 0.15pF capacitor in series with all exposed metal cabinet parts and a known ground, such as a water pipe or conduit.

l Use aVTVM or VOM with 1000 ohm pervolt, or higher

sensitivity or measure the AC voltage drop across the

resistor (See Diagram).

l Move the resistor connection to all exposed metal

parts having a return path to the chassis (antenna

connections, metal cabinet, screw heads, knobs and control shafts, etc.) and measure the AC voltage drop across the resistor. Reverse the AC plug (a non polarized adaptor plug must be used but only for the purpose of completing these checks) on the set and

repeat the AC voltage measurements for each exposed metallic part. Any reading of 0.45V rms (this

corresponds to 0.3mA rms AC.) or more is excessive

and indicates a potential shock hazard which must be corrected before returning the video camera recorder to the user.

m .

VTVM

0 AC SCALE 0 \

’ ~5:ooo~ms

TO EXPOSED METAL PARTS

;I:“’ E$H

1. NOTES DE SERVICE IMPORTANTES

AVANT DE RENDRE LE MAGNETOSCOPE

Avant de rendre le magnetoscope a I’utilisateur, effectuer

les verifications de securite suivantes.

1. Verifier toutes les gaines de fil pour etre sur que les fils ne sont pas pin&s ou que le materiel n’est pas coin& entre le chassis et les autres pieces metalliques dans le magnetoscope.

2. Verifier tous les dispositifs de protection tels que les boutons de commande non metalliques, les materiaux d’isolement, le dos du coffret, les couvercles de compartiment et ajustement ou les boucliers, les

reseaux de resistance / condensateur d’isolement, les isolateurs mecaniques, etc.

3. Pour etre stir qu’il n’y a aucun risque de choc electrique, verifier le courant de fuite de la maniere suivante.

. Brancher le cordon d’alimentation secteur directement

dans une prise de courant de 120 volts. (Ne pas utiliser de transformateur d’isolement pour cet essai).

. Utiliser deux fils a pinces et connecter une rkistance

de 10 watts 1,5 kohm en parallele avec un condensateur de 0,15 PF en serie avec des pikes du coffret mbtallique expos6es et une masse de terre connue telle qu’un tuyau ou un conduit d’eau.

. Utiliser un VTVM ou VOM avec une sensibilitb de

1000 ohms par volt ou plus ou mesurer la chute de

tension CA entre la ksistance (voir diagramme).

. Deposer la connexion de la resistance a toutes les

pieces metalliques exposees ayant un parcours de

retour au chassis (connexions d’antenne, coffret metallique, tetesdevis, boutons et arbres decommande, etc.) et mesurer lachutede tension CAentre la resistance.

Inverserlafiche6A(uneficheintermediairenonpolaris~e doit etre utilisee a seule fin de faire ces verifications.) sur I’appareil et repeter les mesures de tension CA pour chaque piece metallique exposee. Toute lecture de 0,45 V rms (ceci correspond a 0,3 mA rms CA) ou plus est excessive et signale un danger de choc qui doit etre corrige avant de rendre le magn6toscope 3 son

utilisateur.

VTVM

oECHELLE CA 0 \

‘-5%fYMs

METALLIQUES

1-1

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VL-PDl U

WARNING :TO REDUCETHE RISK OF FIRE OR ELECTRIC SHOCK, DO NOT EXPOSE

THIS APPLIANCE TO WET LOCATIONS.

CAUTION: TO REDUCE THE RISK OF ELECTRIC

SHOCK. DO NOT REMOVE COVER. NO USERSERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

This symbol warns the user of uninsulated voltage within the unit that can cause danger-

I 0

ous electric shocks.

This symbol alerts the user that there are

important operating and maintenance instruc-

tions in the literature accompanying this unit.

This symbol mark means following. Camcorder

For continued protection against fire haz-

ard, replace only with same type fuse.

(CP901; 1.25A 24V, CP902; 1.25A 24V,

CP903; 1.25A 24V)

only

ATTENTION: POUR REDUIRE LES RESQUES D’INCENDIE OU DE CHOC ELECTRIQUE,

NE PAS EXPOSER CET APPAREIL A LA PLUIE OU A L’HUMIDITE.

RISQUE DE CHOC ELECTRIQUE

ATTENTION: AFIN DE REDUIRE LES RISQUES DE

Ce symbole signale a I’utilisateur la presence d’une tension non isolee a I’interieur de I’appareil

1 0

qui peut etre la cause de secousses electriques dangereuses.

Ce symbole avertit I’utilisateur que des instructions importantes relatives a I’utilisation et al’entretien se trouvent dans le manuel accompagnant I’appareil.

NE PAS OUVRIR

CHOC ELECTRIQUE, NE PAS RETIRER LE COUVERCLE, AUCUN ORGANE INTERNE NE PEUT ETRE REPARE PAR L’UTIUSATEUR, CONFIER L’APPAREIL A UN DEPANNEUR QUALIFIE.

1 0

ATTENTION

Ce symbole signifie que l’on devra utiliser un fusible de meme type (CP901; 1,25A 24V, CP902; 1,25A 24V, CP903; 1,25A 24V) pour assurer la securite.

Camcorder

seulement

Page 4

VL-PDI U

/fj CAUTION

BEFORE BATTERY DESTROY

NICKEL-CADMIUM BATTERY

The following program is available in the United States. Please consult local environmental

authorities concerning the availability of this or other programs in your area.

The RBRCTM Seal

SHARP participates in the RBRC States. The RBRCTM Seal on our battery pack contained in our product indicates that SHARP is voluntarily participating in an industry program to collect and recycle these batteries. The RBRCTM program provides you with a convenient alternative to placing spent Nickel-Cadmium battery packs into the trash or municipal waste stream, which is illegal in some areas. At the end of their useful life, the Nickel-Cadmium battery can be dropped off at the nearest collection center for recycling. For information on the nearest collection center, call I-800-8-BATTERY or your local recycling center. If you are located outside the United States, contact your local authorities for information concerning proper disposal and/ or recycling of this battery. SHARP’s involvement in this program is part of our commitment to protecting our environment and conserving natural resources.

[Footnote] *RBRCTM is trademark of the Rechargeable Battery Recycling Corporation.

TM* Nickel-Cadmium Battery Recycling Program in the United

NICKEL-METAL HYDRIDE BATTERY LITHIUM or LITHIUM-ION BATTERY

SEALED LEAD BATTERY

Battery disposal Contains the above (Rechargeable) Battery. must be recycled or disposed of properly. Remove the Battery from the products and contact Federal or State Environmental Agencies for information on recycling and disposal options.

1-3

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2. SPECIFICATIONS

Signal System:

Recording System:

Cassette:

Recording/Playback Time:

Rewind and forward time:

Tape Speed:

Pickup Device:

Lens:

Lens Filter Diameter:

Monitor:

Microphone:

Color Temperature Compensation:

Minimum Illumination:

Video Output Level:

Audio Output Level:

Speaker Output:

External Microphone input:

White balance adjustment:

Power Requirement;

Power Consumption:

Operating Temperature:

Operating Humidity: Storage Temperature: Dimensions (approx.):

Weight (approx.):

NTSC standard 2 rotary heads, helical scanning system Digital VCR Mini DV video cassette 90 minutes (DVMGO, LP mode) 180 seconds using AC adapter (DVMGO) SP mode: 18.812 mm/second LP mode: 12.555 mm/second l/3” (6 Omm effective size: 4.5 mm) CCD image sensor (with approx. 660,060 pixels including optical black)

10 x power zoom lens (F1.6-2.3, f=4.4-44 mm), full-range auto focus, manual focusing possible 37 mm/screw pitch: 0.75 mm 4” (10.1 cm) -full-color LCD screen (TFT active matrix)

Electret stereo microphone Auto white balance with white balance lock 8 lux (20 lux measured by EIA standard) (F1.6, with gain-up and digital zoom off)

1 .O Vp-p 75-ohm unbalanced, S-Video terminal, Y-signal 1 .O Vp-p chroma signal 286 m Vp-p (burst signal) 75-ohm unbalanced.

- 8 dBs, impedance less than 2.2 kohms 300 mW

3.5 mm diameter mini-plug, -66 dBs, output impedance 6.8 kohms, DC 2.7 V, for

plug-in-power microphone use

auto-tracking system with white balance lock function

ins

Multi-weighted photometric system (adjustable)

DC 7.2V

6.3W (during camera recording using the viewfinder in full auto mode with zoom

motor off)

7.2W (during camera recording using LCD screen in full auto mode with zoom

motor off backlight in normal mode)

O°C to +4O”C (32°F to 104°F)

30% to 80%

- 20°C to +6O”C (-4°F to 140°F)

2 g/& (W) x 3”15/16 (H) x 7 ll/&’ (D) without Lens hood and protruding parts

[57 mm (W) x 99.7 mm (H) x 194.9 mm (D)]

1.46 Ibs (660 g) (without battery pack, lithium battery, video cassette)

AC Adapter/Battery Charger (UADP-0266TAZZ)

Power Requirement:

DC Output:

Power Consumption:

Dimensions (approx.):

Weight (approx.):

AC 11 O-240 V, 50/60 Hz

8.6 v 16W 2 7/,6” (W) x 1 3/~” (H) x 5 ‘/$’ (D) [62 mm (W) x 44 mm (H) x 140 mm (D)]

0.56 Ibs (255 g)

Battery Pack BT-L43

DC Output:

Dimensions (approx.):

Weight (approx.):

Specifications are subject to change without notice.

7.2V

1 ‘7t32” (w) x ’ 3/, 6” (H) x 4 7/32” (D) [39 mm (W) x 20.5 mm (H) x 107 mm (D)]

0.32 Ibs (145 g)

SERVICE INFORMATION (For the U.S.)

For the location of the nearest Sharp Authorized Service, or to obtain product literature, accessories, supplies or customer assistance, please call I-800-BE SHARP (I-800-237-4277).

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L-PDl U

3. PART NAMES

For details on the use of each control.

Cassette compartment door release

Zoom lens

Stereo microphone Terminal cover

S-Video socket

AUDIO/VIDEO jack

EarPHONES jack

PLUG IN POWER MICrophone jack

DV terminal

- Memory backup battery compartment

Tripod adapter socket

3-l

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LCD lock release

Cable notch cover

VL-PDl U

Power Zoom lever (Wide angle/ Telephoto)

Power switch (CAMERA/

START/STOP

REC butto

Shou loop

SNAP switch

compartment latch

Battery compartment door

(When the cassette compartment cover is opened.)

Cassette compa rtment

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VL-PDl U

4. DISASSEMBLY OFTHE SET

Note: Before removing the cabinet, turn off the power supply, and ascertain that the battery and DC cable have been removed.

1. Remove the screws ((c)LX-BZ0221TAFC)(3 PCS.) of the front cover.

2. Remove the screws ((c)LX-BZ0221TAFC)(G PCS.) of bottom and cabinet fixing angle and the screws ((j)LXHZOO50TAFF)(2 PCS.), remove the screw ((r)XiPSF17P08000)(one PC.) and the screw ((q)LX-HZOO54TAFF)(one PC.), disconnect the connectors of the S/S switch unit FPC and the EJECT switch unit, remove the cabinet A.

3. Remove the battery lid.

Battery lid

4. Remove the screws ((o)LXgBZ0201TAFE)(3 PCS.) and the screw ((p)LX_BZO202TAFD)(one PC.), disconnect the H/A connector and remove the mechanism section.

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VL-PDl U

5. Withdraw the camera front cabinet, remove the screws ((c)LX-BZ0221TAFC)(2 PCS.) and the screw ((n)LXBZ0203TAFN)(one PC.), disconnect the two FPCs and remove the lens unit.

6. Remove the screws ((c)LX-BZ022lTAFC)(2 PCS.), disconnect the FPC of terminal unit and the microphone lead connector.

7. Remove the power angle between the power FPC and the cabinet B.

Power

8. Remove the screws ((c)LX-BZ0221TAFC)(2 PCS.), disconnect the FPC, and remove the V/F unit.

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L-PDI u

9. Disconnect the three FPCs of LCD, one operation unit FPC and three lead wires from the connector, remove the screws ((c)LX-BZOZ21TAFC)(5 PCS.), and remove the main PWB and H/A unit board connector.

FPC Lead wire

Operation

IO. Disconnect two connectors and remove the power FPC and tripod angle.

unit FPC

11. Remove the screws ((c)LX=BZ0221TAFC)(2 PCS.), and remove the operation switch unit.

12. Remove the screws ((b)LX=BZ0220TAFC)(2 PCS.), and remove the tilt cover.

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VL-PDl U

13. Remove the Remove the

screws ((m)LX-BZ0214TAFF)(2 PCS.) and the screw ((c)LX-BZ0221TAFC)(one PC.). assembii of LCD section.

(Disassembling the PWB unit)

14. Remove the shield sheet from the PWB unit, remove the camera FPC, remove the FPC from the remote control light receiving unit, and remove H/A-FPC.

Camera FPC

Shield

(Disassembling the battery terminal section)

Remove the screw ((j)LX-HZOO5OTAFF)(one PC.) fixed to the t

15. remove the battery terminal.

ripod angle, peel the double-coated adhesive tape,

Tripod angle

Double-coated adhesive tape

and

(Disassembling the V/F section)

16. RemovetheV/F PWB holder, remove theV/F backlight spacerfrom the V/F LCD panel, and remove the V/F LCD panel from the V/F backlight unit.

V/F PWB holder

V/F backlight unit

V/F LCD panel

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17. Remove the V/F LCD spacer from the V/F lens assembly.

V ‘/F LCD spacer

(Disassembling the LCD section)

18. Remove the screws ((k)XiPSC17P04000)(2 PCS.) at the LCD panel rotating unit side and the screws ((d)LX-

HZ0050TAFF)(2 PCS.) and remove the LCD front cover. Be careful to remove what the LCD front cover and the LCD panel have pasted will double coated adhesive tape.

LCD

19. Remove the three FPCs from the connectors, and remove the panel.

CN3

20. Remove the screws ((k)XiPSC17P04000)(2 PCS.) and the screw ((b)LX-BZ0220TAFC)(one PC.), and remove the shield sheet, rotating unit, inverter PWB holder and inverter unit.

(b)

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21. Remove the touch panel from the LCD panel.

Note:

Use the touch panel after destaticizing. Be careful so that stress is not applied to the touch panel FPC. Especially, do not bend at the panel front side. It is prohibited to move, holding only the FPC section.

The touch panel is fitted with the double-coated adhesive tape.

22.

Remove the light guide holding spring, remove the lamp unit, reflecting sheet/light guide plate.

Lamp unit, Reflecting

Light guide holding spring

23. Remove the diffusion sheet, prism sheet, and diffusion sheet from the LCD holder.

LCD holder

Diffusion sheet

LCD panel

Prism sheet

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5. MECHANISM ADJUSTMENT JIGS

5-I. Mechanism check adjustment jigs

4 .

Tension gauge 4N

(400gf)

JiGSG0400

AND PARTS

0 r

measurement

l For measurement of

pinch roller pressure.

Dial tension gauge 9DAPTG-1 O-l OW

6 .

Torque screwdriver

JiGTD1500RTDH CB

150mN*m (1.5kgcm)

Master plane SEQMP-VLPDI CL

8 .

Height adjustment jig 9DAHG-PDl

9 .

Height adjustment SEQDRiVER-DH5 BC

screwdriver

4 l pTG-‘o

1 I

021 \

l For checking reel

50 or more

No. 0 cross-bit

y--

base height

l For height adjusting

l For Si roller adjustment l For guide roller adjustment l For Tu guide adjustment l Bit shape (see figure below)

Tolerance + 0.1

/’

1 1.4 1 * b&

Tip thickness 0.5

Page 15

(2) Precision screwdrivers (Phillips head and slotted)

(1)Reel hub for back tension measurement

1) Obtain a commercially available cassette tape reel hub. (Disassemble the cassette tape and remove the tape from

the reel hub.)

2) Paste one end of a string (about 20cm long) to the reel hub with (for example) cellophane tape.

3) Paste the weight of 0.21 N(21 gf) on the upper side reel hub.

VL-PDl U

(2)String for use in pinch roller snap-fit force measurement.

1) Obtain an approximately 20cm length of commercially available string.

2) Tie the 2 ends together to form a loop.

5-2. Parts for regular periodic inspection and maintenance

No . Name

1 . Cleaning paper

2. Extremely thin cotton swab

. Screw lock( 1401 B)

4 . Cleaning liquid:

industrial-use ethyl alcohol

Part No. Code

JiGDUSPER AP

Configuration

Model, Uses

l DUSPER C (SIGMA)

(ozu Co., LTD.)

l Commercially available

item

l Three Bond l Commercially available

item

Remarks

5-2

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6. INSPECTION AND MAINTENANCE ITEMS ‘AND INTERVALS

In order to keep the mechanical section always in good condition, perform the following inspection and maintenance at regular intervals. In addition, after repair, perform the following maintenance items regardless of how long the user has been using the unit.

6-l. List of inspection and maintenance items

Inspection and

maintenance location

Tape running section

(see section 8-1)

E - a,

?Y F

Drum section, Video head

(see section 8-1)

E 3

: %

I-

Timing belt

Pinch roller

Capstan motor

Swing arm

S reel base, Tu reel base

E Center pulley shaft

Intermediate pulley shaft

g Swing arm boss

Intermediate gear A shaft,

intermediate gear B shaft

Tension-arm shaft

Time of use (h)

Symptoms that indicate

500 1,000 1,500 2,000 3,000 need for maintenance

0 cl cl 0

l Block-type noise <Rollers>

l Head hole clogging l Replace if there is anything l Tape damage abnormal in the rotation, or

Note:

III 0

c] 0

Replace the drum ass’y if <Other than the above>

the video head is cleaned l Clean the section that but the envelope is not still appeared. (When the envelope is normal, refer to “11. USEFUL TIPS”.)

- *o -

0 0

- *o

* 0 * 0 l The tape fails to run.

l The tape becomes abnormal.

0 00 0

slack.

l Block-type noise

l Abnormal noise

- *o *o

A - A A *Abnormal noise

A - A A l Tape damage

l Abnormal played-back

image

Remarks

if there is run-out (that becomes large).

contacts the tape (especially the lower drum helical section). Use the specified cleaning liquid.

l Replace if there is anything

l Lubricate with oil.

10 11

Cosmo Hydro HV22

. . . .

Excepting intermediate

gear A and B

Cosmo Hydro HVIOO

Intermediate gear A

“”

and B

Note: Apply oil to the shaft,

then wipe lightly with a cloth.

Loading motor

- *o -

Mode switch

Abnormal noise

* * * * * *The tape fails to run.

PBVS/REW winding torque - * - * *

PB . VS/R l loading back ten- - * - jt *

sion

Tu reel base ratchet torque

‘t

S reel base no-load torque

AHC

[Oil] Cosmo Hydro HV22, HVlOO [Grease] Moly Coat YM-103

[Screw lock] Three Bond 1401B [Cleaning liquid] Industrial-use ethyl alcohol

* 0 * 0 l Cannot eject.

l Fails to enter a mode. (including the noise).

l The tape becomes to perform within the

slack. standard.

l Tape damage l The play-back image is

abnormal.

0 l l l Replace.

0 l l l Clean. A. l l Lubricate. 1r0 l l Check.

l Replace if anything is abnormal

l Replace any part that fails

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6-2. Precautions

(1)When replacing any part, always replace the cut washer that was removed with a new one. (2)This mechanism does not have control adjustment. If the control cannot be set as required, clean and/or replace parts. (3)On the oil

a) Always use the specified oil. (Using another kind of oil can cause various kinds of trouble.) b) Always use clean oil, without any mixed-in dirt, to lubricate bearings. (Using oil with dirt mixed in can cause the

bearings to wear or to stick.)

c) One drop of oil is the amount shown in the figure below, on the point of a pin.

Oil

,.;g ::::

:::::

.:.:.:

.:y:::.

$$g:.

..:.:.:.:

~~~~~~~~.

;::::::::.

i.......... ..>w.

.>g$g$~ ..:.x.:..

. ..fS...

Y$($.J$Y

1.5mm diameter

or less

(4)Petform circuit repair, tape running adjustment, etc. with the Cassette controller assembly attached to the mechanism (5)To operate the mechanical section alone, remove the FPC of loading motor from the connector (section B in the fig. l), and

apply voltage to the loading motor to drive it. The voltage between terminals must be DC3V or less. (Forcing the gears

to turn by hand entails danger of breakage.) (6)To install the cassette controller, push section A in the fig. 1. Do not push anything else. (7)Do not deform any of the mechanical parts.

‘A:.:.: 8..

Fig. 1.

6-2

Page 18

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7. MECHANICAL ADJUSTMENTS AND CHECKS .

The items discussed here relate to general on-site servicing (field servicing). Adjustments and replacements that require

sophisticated facilities, jigs and technology are omitted. In addition, in order to maintain the characteristics that the unit has when it is new, not only are inspection and maintenance necessary, but it is absolutely necessary that, for example, the tape not be damaged, and always use jigs for adjustments

that require them.

(1) Always set the power supply and state of the unit as follows for mechanism adjustments and checks.

AC adapter used, with cassette controller assembly 1

07-l Checking the playback (recording) winding torque 07-4 Back tension torque check and adjustment in record (playback) mode

1 AC adapter used, without cassette controller assembly (independent Mechanism) 1

07-2 Checking the rewinding playback (VS-REW) winding torque

DC3V, without cassette controller assembly (Independent Mechanism)

07-3 Checking of reel base height 07-5 Checking and adjustment of tension roller position in record (playback) mode 07-6 Checking of supply S reel base no-load torque 07-7 Checking of loading back tension 07-8 Checking of winding Tu reel base ratchet torque

07-9 Checking of rewinding playback (VS-REW) back tension l 7-10 Checking of pinch pressing force

(2) When performing checks with a DC3V power supply and independent mechanism, disconnect the loading motor

FPC from the connector.

(3) Always run the tape with the cassette controller assembly attached.

7-1. Checking the ptayback (recording) winding torque

(l)Set the torque cassette with the cassette controller assembly attached, then, in SP recording mode (playback mode

if a signal has already been recorded in SP mode on the tape), confirm that the torque on the winding side is within the standard.

Winding torque standard-in record (playback) mode

0.70 * 0.35mNm (7.0 + 3.5gfcm), ripple 0‘.2mN*m (2gfcm) or less (If there is torque ripple, read the center value.)

7-2. Checking. the rewinding playback (VS-REW) winding torque

(1) Remove the cassette controller assembly, press the

DOWN switch., using the adhesive tape and referring to 9-

3, operate in the TEST mode (TOl) to rewind, and set the

rewinding playback (VS-REW) mode.

(2) Set the torque gauge on the S reel base, press the front

end of tension post with your finger in the arrow A direction so as to ascertain that the winding torque is as specified. (Check without rotating the torque gauge.)

7-l

Fig. 1.

Removal of tension band when measur-

ing the rewinding playback (VS-REW)

winding torque

Page 19

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Rewinding playback (VS-REW) winding torque standard

1.6 + O.GmN=m (16 + Ggfcm), ripple 0.4mN*m (4gfcm) or less (If torque ripple exists, read its center value.)

(3) After checking the winding torque remove the torque gauge, and remove the adhesive tape used in item (1) above (refer

to 9-3). The STANDBY mode is set automatically.

7-3. Checking of reel base height

(l)Remove the cassette controller assembly (refer to 9-2). (2)Referring to 9-1, apply DC3V to the loading motor and put the system into playback mode.

(3)Taking adequate care so that the master plane does not

contact drum, running parts (guide roller, etc.), or the MIC contacts. Fit the master plane holes to the 2 guides (A and

B) in Fig. 2.

(4)Confirm that the heights of the S reel base reel receiving

surface and the Tu reel base reel receiving surface below the master plane top surface are within the set values, using, for example, a slide calliper (Fig. 3). When checking the S reel base height, press the front end of tension post in the arrow A direction with your finger to

release the tension band, and then check the height in this

state.

tacts

Fig. 2.

(5)lf the height is not within set values, replace the washer under the reel base, and adjust as specified.

Note: After the adjustment, make sure that the reel bases rotate smoothly.

Reel receiving

Fig. 3.

7-4. Back tension torque check and adjustment in record. (playback) mode

(1)Checking

Set the torque cassette (SD-1015), and make sure in the SP record mode that the supply side torque is within the standard shown below (or in the playback mode for the tape on which the signal has been SP-recorded).

0.7 + 0.1 mN*m (7 + lgcm) (If torque ripple exists, read its center value.)

7-2

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(2)Adjustment

If the value is out of standard range, adjust, using the

screw 1 shown in Fig. 4.

1. Loosen the screw 2 slightly.

2. Adjust to turning the screw 1. When back tension is too high, turn the screw 1 counterclockwise (CCW).

When back tension is too low, turn the screw 1

clockwise (CW).

3. After adjustment fix the angle with the screw 2. (At this time take care so as to prevent excessive tightening.) Apply Screw Lock to the screw 1.

Screw tightening torque: 0.04Nm (0.4kgcm)

Tension roller position (S guide standard)

Tension roller ,I,

Fig. 4. Check (tape exists)

7-5. Checking and adjustment of tension roller position in record (playback) mode

(1)Checking

Before winding the 60-min tape make sure that the tension roller is in the same position as S guide as shown in Fig.

If not, take out the tape and adjust in the following procedure.

(2)Adjustment

Set the playback mode without loading the tape.

Loosen the screw 3 slightly (to such an extent that the tensionband holder 4 can be moved).

If the tension roller is inside from the specified position, shift the tension band holder 4 in the arrow @ direction.

If the tension roller is outside, shift the tension band holder in the arrow @ direction, and fix with the screw 3.

(Proper shift must be 0.2 to 0.6mm outside from the specified position.)

Check the position by the procedure described in item (1) Checking above.

If the position is not specified position, adjust again.

Tension roller position (S guide standard)

7-3

Fig. 5. Position adjustment (tape does not exist)

Page 21

7-6. Checking of supply S reel base no-load torque

(l)Remove the cassette controller assembly, then apply

DC3V to the loading motor and put the system into L. start mode (refer to 9-l).

(2)Move the swing arm toward the Tu reel base side.

Be careful not to prevent damage to the gears and other parts all this while. (Fig.6)

(3)Set a back tension measurement reel hub on the S reel

base.

(4)Using a dial tension gauge, pull the string in the A

direction, then confirm that the tension is within the standard.

FF back tension standard

20mN or less (2.0gf or less)

(If the tension fluctuates, read its center value.)

7-7. Checking of loading back tension

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Fig. 6. S reel base no-load torque measurement

method

(l)Remove the cassette controller assembly, then apply DC3V to the loading motor and put the system into L. start mode.

(refer to 9-1)

(2)Move the swing arm toward the S reel base side. Be careful not to prevent damage to the gears and other parts all this

while. (Fig.7)

(3)Set a back tension measurement reel hub on the Tu reel base.

(4)Using a dial tension gauge, pull the string in the A direction, then confirm that the tension is within the standard.

REW back tension standard lSfi:rnN (l+.;gf) (If the tension fluctuates, read its center value.)

7-8. Checking of winding Tu reel base ratchet

torque

(l)Remove the cassette controller assembly, then apply

DC3V to the loading motor and put the system into standby mode. (refer to 9-l)

(2)Move the swing arm toward the S reel base side.

Be careful not to.prevent damage to the gears and other

parts all this while. (Fig.8)

(3)Set a back tension measurement reel hub on the Tu reel

base.

(4)Using a dial tension gauge, pull the string in the A

direction, then confirm that the tension is within the standard. (If the tension fluctuates, read its center value.)

Move the swing arm toward the S reel base side.

Winding Tu reel base ratchet torque standard

90mN or less (9gf or less )

Fig. 7. Loading back tension measurement

method

7-4

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7-9. Checking of rewinding playback(VS-REW) back

tension

(1) Remove the cassette controller assembly, then apply DC3V to

the loading motor and put the system into rewinding playback

(VS-REW) mode. (refer to 9-l)

(2)Move the swing arm toward the S reel base side.

Be careful not to prevent damage to the gears and other parts

all this while. (3)Set a torque gauge on the Tu reel base. (4)Turning the torque gauge to counterclockwise

seconds), then confarm that the torque is within

(If the tension fluctuates, read its center value.)

Rewinding playback (VS-REW) back tension standard value

0.70 + 0.35mN*m (7.0 + 3Sgfcm)

(1 turn for 3

the standard.

7-lO.Checking of pinch pressing force

Fig. 8. Winding Tu reel base ratchet torque

measurement method

(l)Set the pinch roller pressing force measuring thread on the pinch lever (position A , Fig. 9). (2)Set the mechanism to the playback.mode, press the pinch roller against the capstan axis. (3)Fit the tension gauge to the pinch roller pressing force measuring thread, pull in the arrow B direction shown in Fig. 11

to separate a little the pinch roller from the capstan axis.

(4)Gradually return the pinch roller, and when the pinch roller contacts parallel the capstan axis, read the value (see Fig.

10) to make sure that the value conforms to the standard shown below.

1.8 + 0.3N (180 + 30gf)

After making this measurement, quickly release the system from playback mode and remove the pinch roller from the capstan shaft. (If the pinch roller is left fitted onto the capstan shaft for a long time, the pinch roller will be deformed.)

A-

Fig. 9.

Fig. 10.

Fig. 11.

7-5

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8. TAPE RUNNING ADJUSTMENT

8-1 m Adjustment locations

I I

<Replacement parts> . S guide

. T roller, arm

- Tu guide, arm

- Slide chassis

Adjust the height of only replaced parts with the adjusting jig. Adjustment procedure 8-2

Cassette controller installation

. Ball base

- Guide roller . Drum assembly

- Cap motor, etc.

8-2. Running height adjustment

After replacement of S guide, T roller or Tu guide adjust the height . (Adjust only the replaced parts.) After height adjustment do not turn the T roller. If crease is found on the tape of S guide and Tu guide, remove the crease

by rotating. (As for details refer to the “running rough adjustment”.)

S guide

Tu guide

T roller

Height setting jig

Lower edge

fitting

\ Master plane

After setting adjustment jigs, turn T roller and S guide counterclockwise to 135’.

Page 24

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8-3. Preparation for tape running adjustment

Meters, jig . . . Oscilloscope, Adjustment remote control, Height adjustment screw driver, Alignment tape (For tape running

adjustment, colour bar), Master plane, Height adjustment jig. (1)Remove the cassette controller assembly. (2)Clean the tape running surface (especially, adequately clean the drum surface and the lower drum helicam

surface). (3)Connect an oscilloscope to each TP on the relay circuit board. (4)Turn the AC adapter power ON. (5)Using the adjustment remote control unit, put the system into TEST mode T-05. (6)Replay the alignment tape for running adjustment, and make sure that the tape is running in the SP mode. (7)Check the oscilloscope playback envelope, then, at +I/4 shift and -l/4 shift, check whether all of it is flat. If it is not,

perform the following adjustment so that it becomes flat. (Each time you push the PLAY key, the, shift will change; +I/4 shift -+ Normal + -l/4 shift --+ Normal, in order.)

Sup guide roller

Tu guide roller

Tu guide

8-2

Page 25

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8-4. Running rough adjustment

(Since this adjustment is performed without cassette controller, put a proper weight so that the cassette does not rise , and make an adjustment.)

Adjustment item

1) Su, Tu guide roller height adjustment

Turn to 180”

2) Check of V&R envelope wave form

T roller

Method and description

(l)Loosen the guide roller lock screw, then tighten loosely so that

the roller turns easily.

(2)Replay an alignment tape, and adjust the Su, Tu guide roller so

that the envelope sides of entrance and exit are flat.

(3)Perform a l/4 shift, then, as in the above case, adjust until the

envelope becomes flat.

* If running is difficult for the entrance changed, turn the T roller to

180”. (refer to Fig. 1)

(l)Confirm that the envelope waveform peaks in V/SR mode are

uniform.

(2)lf they are not uniform, fine-adjust the guide roller and the Tu

guide.

3) Check of tape wrinkles

Deformation

(l)Make sure that the S guide flange tape is free from creases

in the PB mode and V/SR mode.

elf crease is found, make an adjustment in the range of f180°. @After adjustment apply Screw Lock.

(2)Check that the tape is not distorted between the Tu guide and

pinch in the PB mode and the V/SR mode.

Qlf crease is found, make an adjustment in the range of t180”. QAfter adjustment apply Screw Lock.

T roller

Pinch roller

Adjust so that A $ B.

Wrinkles

Tu guide

Deformation

‘q // ‘Deformation

4) Check the rising time of the envelope wave form

(1)Check the rising time of the envelope when switching from V/

SR mode to PB mode. (Within 5 set)

(2)Check the rising time of the envelope when switching from

STOP mode to PB mode. (Within 5 set)

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8-5. Final running adjustment

(Perform adjustment without removing the cassette controller.)

Adjustment item

1) Adjustment of Sup and Tu guide roller height

2) Adjustment of playback SWP

Method and description

(1)lf the envelope waveform changes from the roughly adjusted

one, adjust again the height of guide roller. (2)Finally adjust the lock screw of Sup and Tu guide roller. (3)Once perform unloading and then loading to set the PB

mode, and make sure that the envelope waveform does not

change.

(1)Playback the colour bar tape. (2) Perform SWP automatic adjustment with adjustment remote

control.

8-4

Page 27

9. MECHANICAL SECTION ASSEMBLY AND PARTS REPLACEMENT (DISASSEMBLY AND REASSEMBLY)

Mechanical section disassembly and reassembly are explained in this section.

For removal of the cabinet, etc., refer to 4. DISASSEMBLY OF THE SET.

1. Always replace cut washers that have been removed, for example in parts replacement, with new ones.

2. When reassembling, be careful not to allow screws, washers or foreign matter to enter. They can cause mechanical misoperation.

3. Use the cleaning liquid, oil, grease and screw lock that are specified below. Use of any other kind can cause mechanical misoperation.

011 Grease: Screw lock: Three Bond :1401B Cleaning liquid: Industrial-use ethyl alcohol

4. Turn the mechanical section over, do not place it on, for example, a desk. Deformation and scratching of mechanical parts can cause trouble.

9-I. On the mechanical modes

To operate the mechanism, apply DC3-4V to the loading motor. At this time, disconnect the loading motor FPC from the connector.

Cosmo Petroleum : Cosmo Hydro HV22/HVlOO Dow Corning : Moly Coat YM-103

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(l)EJECT mode

The mechanism position to take out the cassette where the EJECT lever is extremely shifted in the A direction. (It

is impossible to lock the cassette controller assembly in

this mode.)

(2)STANDBY mode

The mechanism position to set the cassette where the slide chassis is at the farthest position from the drum and the EJECT lever is i where the cassette controller assembly can be

n clockwise rotated position

(position

EJEC

T lev

EJECT mode diagram

Slide chassis

STANDBY mode diagram

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(3)LOADING START mode

This is the mode where the tape is wound around the winding reel when a cassette with visible wind start leader tape is loaded. (The brake shifter moves to the left, the S

main brake is separated from the S reel base and the Tu main brake is separated from the Tu reel base.)

S reel base

reel base

(4)REWINDING (VSR) mode

The mechanism position to rewind the tape (fast rewind-

ing playback). The S and T pole base is pressed, the pinch roller is pressed to the capstan axis, the brake shifter VSR brake section engages with the Tu reel base gear.

VSR brake section

Tu reel base

S main /brake

Brake shifter

LOADING START mode diagram

T pole base

S pole base

Pinch roller

I /

REWINDING (VSR) mode diagram

Tu main brake

Capstan shaft

(5)PLAYBACK (RECORD, FF, VSF) mode

The mechanism position for playback, record, FF and fast

, feed playback.

The pinch roller is pressed to the capstan axis, and the S/ Tu main brake is separated from the S/Tu reel base.

S main brake

Tu main brake

(Not visible)

PLAYBACK mode diagram

(RECORD, FF, VSF)

Page 29

(6)STOP mode

The system is in the STOP (Ret Lock in CAMERA mode)

position; the S and the T pole bases are snap-fitted to the drum base, the S brake is in contact with the S reel base, and the Tu brake is in contact with the Tu reel base.

S main brake

S pole base

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T pole base

Tu main brake

STOP mode diagram

9-2. Cassette controller assembly

(1)Apply DC3V to the loading motor to set the standby mode.

Press the lock lever in the arrow direction to move up the

cassette controller. (See Fig. 1, direction @ or @)

(When the lever is pressed in the direction @, gently raise

the cassette controller to release.)

(2)Remove the screws 0 and @ shown in Fig. 2 and Fig. 3,

and remove the Down guide 0.

(3)Remove the screws @, 0, @, and @$ shown in Fig. 2,3 and

4, raise the side plate @ in the direction K to remove it.

Note) When removing the cassette controller, take care so that

the drum motor FPC provided between the side plate @ and the top cover @ is not damaged and so that the drum

is not damaged.

Fig. 1. Lock lever.

(1)Apply DC3V to the loading motor to set the standby mode.

(2)lnstall the side plate 0.

1) Lower the cassette controller assembly in the direction contrary to K in Fig. 4, and fit the screws @ and @ as shown in Fig. 4. Tightening torque 40 + 4mN.m (0.4 + 0.04kgcm). Before fitting the screws @ and @j make sure that the

side plate positioning section 0 engages with the down switch angle in fig. 2.

Note) When lowering the cassette controller assembly in the direction contrary to K, place the drum motor FPC

between the side plate @ and the top cover @. At this time be careful so that FPC is not damaged. Take care so that the drum is not damaged.

Lock lever

A+

Fig. 4

0 Side plate positioning

@ Down switch angle

@ Down guide

Slide chassis

@I Down guide positioning

Fig. 2.

9-3

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2) In Fig. 2 fit the screws @ Tightening torque 40 + 4mN.m (0.4 + 0.04kgcm)

3) In Fig. 3 fit the screw @. Tightening torque 40 f.4mN.m (0.4 + 0.04kgcm)

(3)lnstall the down guide @.

1) In Fig. 2 and Fig. 3 engage the slide chassis down guide positioning sections @ and 0 with the down guide, install with the screws 0 and 0.

Tightening torque 40 + 4mN-m (0.4 & 0.04kgcm)

@ Top cover

Fig. 4

0 Down guide positioning

9-3. How to operate with the circuit board

Slide‘ chassis

Fig. 3.

Fig. 4. (Fig. from direction A)

without the cassette controller assembly.

In this method, if the procedure is followed incorrectly there is danger of damaging the mechanism and the tape, so except in special cases, such as when measuring the VSR torque, do not perform this procedure. Normally operate this unit with the cassette controller assembly attached. Be sure to follow each caution mentioned.

(1)Apply DC3V to the loading motor to set the EJECT mode. (2)Remove the down switch angle.

1) In Fig. 5 remove the screws @ and @I.

Note) The loading motor solder joint (part T, Fig. 5) of

DEW sensor applied to the down switch angle is not removed. After the down switch angle is removed,

take care so that the DEW sensor FPC is not

broken.

(3)Surely secure the moving piece @ of down switch as

shown in Fig. 6 with the aid of adhesive tape so that the

switch is turned on. (4)lnstall the down switch angle. Note) To set the REC mode, press the pin of recognition

switch @ (not required in other modes).

Fig. 5. STANDBY mode

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(5)Set the test mode (T-01) with the adjustment remote controller without loading the tape. Thereby the mechanism

operation is enabled with the mode key.

(6)To eject, remove the tape (3).

moving

@ Down switch moving

piece

tape

Adhesive tape, ok

Fig. 6.

9-4. Phase matching

For the parts listed below, match the phases as shown in Fig. 7. (1) AHC cam (2) MODE switch (3) Main cam (4) Sub cam

Note) Before disassembling, check the marker positions carefully. Note) When installing the engagement gear, make sure that the main cam and sub cam phase matching hole aligns with

the chassis hole.

Note) After phase matching, turn the MODE switch by hand and confirm that it turns almost one complete turn. (After

checking, return it to its original position.)

Phase matching hole \ (for chassis)

Phase matching

mark

MODE switch

Phase matching mark

AHC cam

Main dam

Phase matching hole (for chassis)

Coupling gear

Fig. 7.

9-S

Sub cam

Phase matching hole (for chassis)

Page 32

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9-5. Reassembly

9-5-l. Reassembly in side of the main chassis.

Note) Numbers before part names are given as a guide to the order of assemblv.

As for greasing/oiling/cleaning places refer to the attached drawings (1 akd 2).

Side surface grease

(2) Pinch drive lever

Shaft grease

(2) Mechanism fixing angle

assembly (Rear surface)

B-4

Main chassis

A 9 S Tight . Ml .4 x L3 B 9 S Tight . Ml .4 x L2

assembly (Front surface)

Item

Tightening torque Quantity

70mN-m 70mN.m

3 6

se to the cam groove.

Note) The numbers following A and B

indicate the screw tightening order.

Main chassis assembly (Rear surface)

9-6

Page 33

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Coupling

(4)

(3) Sub

Positioning hole

Cam groove grease

(6) T arm control lever

n _d- -2

/&=tY

(7) AHC control lever

lrem

I Quantitv I

(2) Loading lever

To cam aroove ‘I

Groove grease \\\y

(1) Shifter drive lever assembly

D Groove grease

(3) 1 u guide cam

Item B @ S Tight l Ml .4 x L2 c @ cw01.2-03.0-to.25 D 9 Special screw l

Ml .4 x L1.6

Tightening torque Quantity

70mN.m

40mN=m

2 2 4

9-7

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(4) Intermediate gear angle sub assembly

(1) intermediate pulley assembly

(2) Center pulley assem

Phase match check

Enter part of convexity rear surface

Tightening torque Quantity

S Tight l Ml .4 x L2

70mN.m 1

Phase match check

Guide rail sub assembly (Rear surface)

Page 35

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S pole base assembly

S loading arm assembly

S pressi rre spring

S loading gear

Guide roller assembly

Tu pressure spring

Item ’

F Q CW00.7-02.2-to.25 G g Special screw l

Ml .2 x Ll .8 (Tentative tightening)

Tu pole base assembly

, Tu loading arm assembly

Tightening torque Quantity

5mN=m

(3) Loading motor assembly Grease

surface, groove side surface)

Tu loading gear

K-b, _

(2) Tape guide spring

kzI

(2) PB guide spring

. Grease

(Front surface, rear surface, groove side surface)

Drum base sub assemblv

[A 19 S TigGl.4 x L3 1 70mN*m 1 4 1

p Special screw with step-

Ml .4 x L6.25

70mN-m

Page 36

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(2) Down

angle

switch attachment ’

. .

Item

SL chassis holder S

A 9 S Tight . Ml.4 x L3

Tightening torque Quantity

70mN.m

Fit, clamping the plate

(1) AHC assembly

9-l 0

Page 37

9-5-2. Reassembly in side of the Slide chassis.

Note) Numbers before part names are given as a guide to the order of assembly.

As for greasing/oiling/cleaning places refer to the attached drawings (3 and 4).

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Fit the main brake SPR from above, and close with the hook.

(3)

n /\

(3) one pc.

(7) one pc.

(8)

456

one pc.

(8)

*@Tightening torque

40 + 4mN.m

(0.4 +_ 0.04kgocm)

382 @)

,Grea

(2)

382

Tightening torque

40 + 4mN=m

(0.4 + 0.04kggcm)

9-l 1

Note) Be careful not to scratch or denttithe

---14

be careful not to deform the tension band in handling it.

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9-5-3. Main chassis assembly and slide chassis assembly assembling method

(l)Set the US mode (see the figure below). (2)lnset-t the slide chassis side operation pins (0 tension arm, @ Tu guide arm, @ pinch lever) in the position shown

below at the main chassis.side, move the slide chassis in the arrow direction, using @ to @ as guides, insert the loading lever operation pin into the groove of slide chassis, and install with the 4 screws.

@Tightening torque

40 & 4mN-m

(0.4 + O.O4kg-cm)

Numbers before part names are given as a guide to the order of assembly. When treating the sensor FPC wire, pay attention to the part A shown in Fig. 6. Oil application place is shown in Fig. 5.

*@Tightening torque

70 + 7mN.m

(0.7 + O.O7kg-cm)

Page 39

GREASE/OIL APPLICATION

PCS.

Tightening torque

40 f: 4mN.m

(0.4 + 0.04kgocm)

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0. 1.

Fig. 1. Side of the main chassis

Brake shifter

(G3 : Greasing

@ : Greasing

I I I

Fig. 4. Side of the slide chassis

d”

Tu guide arm

I I. y 0

Pinch lever

0 : Oiling

G : Greasing

m : Greasing

9-13

G : Greasing

m : Greasing

Fig. 3. Side of the slide chassis

Swing arm

Fig. 5. After joining the main chassis

and slide chassis

Page 40

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Mode switch

Enabled aft assembling

T arm control lever

Pinch control lever

Pinch drive lever

From rear surface side

Main cam surface

AHC cam

Sub cam

tar

side

O 0

Intermediate gear angle

0 0

Shifter drive lever

after

“cl

Loading lever

Tu guide cam

S loading arm

Tu loading arm

Drum base assembly

Fig. 2. Side of the main chassis

ensor FPC

Fig. 6. Sensor FPC wiring

9-14

Part A

Page 41

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9-6. Removing the cassette

(1)Apply DC3V to the loading motor unload slightly. (2)After the tape is slackened, turn

direction, Fig. 1)

(3)Repeat the operations (1) and (2). After the pole base has been completely unloaded, ascertain that the tape is not

loose.

(4)Finally apply again DC3V to the loading motor, so that the cassette controller ejects.

(5)Take out the cassette.

Note) DC3V is applied

to the loading motor as shown below. Then, the mechanism moves

the rotor (lower side of mechanism) of capstan motor to tighten the tape. (Arrow

in the unloading direction.

Plus pole

Minus pole

Capstan motor rotor rotation direction

(from rear side of mechanism)

Loading motor

Fig. 1.

Page 42

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10. ADJUSTING THE ELECTRICAL CIRCUITS

Before starting the electric circuit adjustment

l The adjustment methods described herein are used, in most cases, when the expendable mechanical parts, including

the video head, have been replaced, at which time the electrical circuits need to be readjusted. Before adjusting the electrical circuits, make sure that the mechanism works properly (i.e., the mechanism is properly adjusted). lncase of the occurrence of any problem to the electrical circuits, be sure to use the specified measuring instruments to locate the area to which the problem is occurring, and then take the necessary action,‘including repair, replacement or adjustment, exactly as instructed in the electrical adjustment methods that will follow.

Do not attempt to make adjustments without using the proper measuring instruments.

l This machine is configured so that the electrical circuits inside its PWB unit are composed, for the most part, of high-

density, small surface-mounted component parts for downsized machine body.

To perform repair service or parts replacement, do so using a soldering iron, but in as short a time as possible; this is

because surface-mounted component parts are generally so small in size and susceptible to heat, as compared with the large discrete parts used in TV sets, desk-top video decks, etc., that attempting to heat their electrodes for a longer time than is necessary with a soldering iron may result in their becoming defective. This applies particularly when replacing the laminated chip capacitors.

For this purpose, ceramic soldering irons with a temperature regulator are recommended (iron tip temperat

and soldering time 5 seconds or shorter).

ure 250°C

The VL-PDI U and other models that follow are newly equipped with the digital interface function. The Digita

IEEE1394 Standard stipulates that each set with the digital interface function be given its specific ID number. The ID number is written on the E*PROM of the set while it is manufactured. If the E*PROM alone or the PWB having this E*PROM on it has been replaced for repair purpose, it is necessary to write a new ID number again. (Note that any replacement part does not have an ID number yet.) Accordingly, the repair engineer must obtain the new ID number.

Interface

Head amplifier PWB

If the IC302 (E*PROM) or the head amplifier PWB has been replaced, it is necessary to write a new ID number. (Note that any replacement part does not have an ID number yet.) Obtain a new ID number from the service department of sales company. Take the following steps to write the ID number on the E*PROM.

n How to write an ID number on.the E*PROM (Have the adjustment remote control at hand.)

Take this procedure after all the repair complete.

1. Set the power switch to the “VCR” position.

l CAMERA

2. Press the “CONTINUE” key first and then the “VCR ADJ” key, both located on the adjustment remote control.

Make sure an address appears on the LCD monitor. Be careful not

to press the “CONTINUE” and “VCR ADJ” keys at once.

3. Using the “FF” or “REW” key, look for your target address. To advance the numbers, use the “FF” key. To move them back, use the “REW” key.

4. Press the “PLAY” key and the address is set up.

1 o-1

Page 43

Using the “FF” or “REW” key, set up the ID number for the target

5. address. To advance the numbers, use the “FF” key. To move them back, use the “REW” key.

Press the “PLAY” key and the ID number is set up.

Press the “STOP” key and you go backto the above step 2. Now write the ID numbers for all the addresses (17E, 17F, 180, 181 and 182).

8 .

Set the power switch to the “OFF” position. Now the writina is complete.

OFF

VCR

VL-PDl lJ

[PLAY] key

FFI key

[STOP] key [REW] key

[VCR ADJ] key [CONTINUE] key

VL-PDl U Service jig configuration

CAMERA, HEAD t 0

,_ 8 r’ 1

Mechanism

1 J

VCR Main PWB

ADJ. REMOTE CONTROL RRMCG 0033 TASA

CAMERA POWER

PWB

VL-PDl U Specifications of service jigs

1 No. 1

I1 T H/A ++ VCR Main (pin80) 1 2 I 3 I VCR Main t) CAMERA POWER (pin80)

r -- ~~~~

I 5 1 VCR Main e CAMERA POWER (pin40) I 6

I I

1 VCR Main t) LCD Panel (pinl0)(3pcs.)

4 [ VCR Main t) CAMERA POWER (pin80)

I VCR Main t) DV PWB (pin60)

9 10 1 CAMERA HEAD ++ CAMERA POWER (pin15) 11 1 CAMERA HEAD ti CAMERA POWER (pin17) 12 1 For checking VCR wave form (pin14)

Video output s output Battery terminal Control switch

NAME

1 o-2

1 QCNW-1762TAZZ 1 BZ 1 QCNW-1769TAZZ 1 BF 1 QCNW-1765TAZZ 1 CA 1 QCNW-1765TAZZ 1 CA 1 QCNW-1763TAZZ 1 BU 1 ‘QCNW-1764TAZZ 1 BW

1 QTANZ0126TAZZ 1 BB 1 QSW-Z0280TAZZ 1 AY 1 QCNW-1771TAZZ 1 BG 1 QCNW-1773TAZZ 1 BH

Part code 1 Price Code

QJAKZOO55TAZZ

QCNW-1775TAZZ

Page 44

L-PDl U

[TEST POINT]

(Wiring board diagram: Main Side A)

(Wiring board diagram: Sub Side A)

TL930(+) Shutdown voltage

TL934( -) Shutdown voltage

1 o-3

Page 45

(Wiring board diagram: Main Side B)

TL803(B OUT) ,

DAC full-scale

IC461

TL8805(HSY)

VF VCO

TL800(HSY) VCO free-run

VL-PDl U

TL8814(VG)

Operation of lamp system safety defection circuit

TL808(BL_PWR)

mD, MOperation of lamp system

safety defection circuit TL807(BL PWR)

Operation>f lam’p system safety defection circuit

-m -A-.._ .- _ _.A . .

IL603(IN I MIG L) -

EE level check Frequency character check

TL604 (Audio-R out) EE level check Frequency character Frequency character check EXT MIC

TL605 (Audio-L out) EE level check

check EXT MIC

TL2402

_-- ._(EXT MIC R) EXT MIC

TI 5401

’ --

(EXl

- MIC L)

EXT

MIC

VCO free-run

.TL804(C OUT)

vv YIN.

AGC

DAC full-scale

TLGOl(INT MIC R)

EE level check

1 o-4

Page 46

L-PDl U

[Making adjustments] Adjusting the servo system controller and related parts

1. Setting the system codes

Replacement of IC703 E2PROM requires the following data to be set in this order. I

[Procedure]

Set the unit to the VCR mode and set the data for each address.

Address

1) Model code 01 00

09 FF

2) Destination code

3) Specifications code

4) Menu selection code

5) Software switching code 05 00

6) Calendar switching code 07 98

When replacing the IC7O3 E2PROM, first make the following settings and then start the I

adjustments.

(1) Electromagnetic conversion (2) LCD

Address

Data

02 01

OA FE

03 10

OB EF

04 FF

oc 00

OD FF

OF 67

Address Data

Data

I I I

* Some adjustment step

numbers are followed by

when to perform the ad-

I 1 justment.

I Examples

1) During E2PROM replace-

ment

1 2) During circuit board (Main)

replacement

I 1 3) During LCD replacement

I 4) During mechanism re-

placement

-_--------II) During E2PROM(IC703)

I replacement

I I

I 25 26 27 28 80 80 60 80

l Adjustment with automatic machine

[Procedure]

1) Using the 12 command, set the VCR adjustment mode.

2) Using the 20 command, give the E2PROM Write permission.

3) Set the system code with the 22 command for each type.

4) Using the command, set Write inhibition.

5) Using the command, cancel the adjustment mode.

l Manual adjustment

[Procedure]

Set the VCR adjustment mode, and set data of each address.

1) Set the CAM/OFF/VCR selection switch to VCR.

2) Press ‘CONTINUE” ---+ “VCR adjustment” on the remote controller to set the VCR I adjustment mode.

(At this time an indication “VCR ADJ” appears at the left upper side.) Enter a setting corresponding to the address.

Setting method

3) Adjust the address by moving up and down the blinking numeral with the FF and REW

key, and fix the address by pressing the PB key.

4) Adjust to the setting by moving up and down the blinking numeral with the FF or REW 1

key, and set data by pressing the PB key.

5) Press the STOP key to set the address set state.

6) Repeat the operations 3), 4) and 5) as much as input addresses. After completion of I

input of all items hold down the STOP key for about 3 seconds to cancel the VCR I

adjustment mode.

7) Set the CAM/OFF/VCR selection switch to OFF.

50 23 I I I

’

I I

I I I I I I I I

I I I I I I

1 o-5

Page 47

VL-PDl U

2. Shutdown voltage adjustment (Wiring board diagram: Sub Side A)

TL930(+)

TL934(-)

I I

11) During E2PROM replacement (IC703)

I I

jcpgd

I I

L9ia

-I

CP90

I I I

L921

-,I

pqjl

I I I I

[Procedure]

Load the blank cassette into the deck.

Set the unit to the camera mode, and start recording. (LCD : ON, V/F OFF)

Press the “CONTINUE” and “TEST SEL” keys on the adjustment remote control in this 1

order. Select T-03 with the “REW” and “FF” keys and press “PLAY” key.

4 *

This shifts the operation mode to the shutdown voltage adjustment mode. At this time, the display in which T-03 is flashing changes to the normal REC screen. I Measure the voltages between TL930 (+) and TL934 (-) using the digital multi-meter,

and supply external power until the power voltage is adjusted to +5.90 VAC. Press the “SET” key. I

6) +

This executes automatic adjustment. At this time, with the “BATTERY” indication appearing only for an instant, the I adjustment is complete. Press the “CONTINUE” key on the adjustment remote control.

HSWP adjustment

[Procedure]

1) Play back the alignment tape in the video mode.

2) Press the “CONTINUE” and “HSWP ADJ” keys on the adjustment remote control in this I 2) During E2PROM replace-

order.

+ This executes the HSWP adjustment.

When the adjustment is successful, the blue LCD lights up and the cassette is automatically ejected. If not properly adjusted, the red LCD lights up.

I I

k--5.9OV + 30mV

I I

1 1) During mechanism reI placement

ment (IC302 inside the

head amplifier circuit

board)

I I I I I I I I I I I I I I I

I I I I I I

1 O-6

Page 48

L-PDl U

ADJUSTING THE ELECTROMAGNETIC CONVERSION CIRCUIT SYSTEM

Note:

During the adjustment of the electromagnetic conversion circuit system, keep R404 out 1

of operation.

1. PLL VCO adjustment

[Procedure]

1)Playback the alignment tape (or a self-recorded tape).

2)Call the adjustment mode (V-ADJ).

3)Set the address to “2C”, and call the data.

4) Using the FF key, vary the data that has been called until the playback image screen 1 changes to the blue backscreen. Then use the REW keytovarythedata backward until the data point is found where the screen starts to switch from the blue back to the I

playback image. At this time, take note of the data obtained at this point.

5) As in the above step 4), vary the data that has been called - this time using the REW 1 key - until the playback image screen changes to the blue back screen. Then use the 1 FF key to vary the data backward until the data point is found where the screen starts I to switch from the blue back to the playback image. At this time, take note of the data I obtained at the point.

Playback screen

I I

1 1) During Circuit board (Main)

replacement

2) During E*PROM replace-

ment

0000

Blue back

Position @ at which note Position @ at which note is made of the datum is made of the datum

6) Calculate the data taken note of at the points @ and @I to find the center of these data, I and shift to and determine the central data by using the FF or REW key.

Example:

If the data taken note of at points @ and @ are 5A and 65, respectively:

Thecentral data is set to “5F”.

5A. 5B.

5 a>

5C.

0000

Step 5)

REW key

5E. 5F. 60. 61. 62. 63. 64.

5D.

0000

Blue back

0 ij

I I I I I I I I I I I I

I I

1 o-7

Page 49

VL-PDl U

2. Phase and equalizer adjustment + (Performed in the VCR mode) I

[Procedure]

1) Load a self-recorded tape into the deck.

2) After playback for 3 minutes, select the test mode OF using the remote control for 1 2) During circuit board (Main) adjustment to start the automatic adjustment. (The following sequence is automatically

performed.)

The built-in PTW colour bar is recorded.

-1

VS REW

II) During mechanism re-

1 placement

replacement

3) During E*PROM replace-

ment

Phase and equalizer are adjusted automatically.

Blue LCD comes on.

Judg*ment

Red LCD comes on.

Tape is EJECT.

Error rate check

Select and fix the TEST MODE OC on the adjustment remote control.

Manual adjustment method (video adjustment mode)

Perform this adjustment with the self-recording/playback in the LP mode.

For phase, vary the data for the address 2B, and for equalizer, vary the data for the I

address 27, to set the error rate to the minimum.

I I

Synchronization error Error rate

Synchronization error 20 or less Error rate

200 or less (SP Mode)

330 or less (LP Mode)

I I I I I I

I I I

1018

Page 50

WL-PDI U

ADJUSTING THE VIDEO I/O CIRCUIT SYSTEM

(Wiring board diagram: Main Side B)

-TL1402 AGC

1. I/O Filter adjustment

Mode 1 Colour bar input EEmode Procedure 1) Call the adjustment mode (V-ADJ).

2) Set the address to “2D”, and call the date.

3) Set the date to “80”.

Examples l During E*PROM replacement.

2. PC0 D/A-Y adjustment

Test point

Mode Procedure

Examples

TLI 408 (connected to oscilloscope)

EE mode for any given video signal

Call the adjustment mode (V-ADJ).

Set the address to “22”, and call the date.

(100% white signal is output.) Vary the date with the FF and REW keys to set the signal appearing at TL1408 to 1 .OVp-p + 0.05.

l During E*PROM replacement. l During IC4401 replacement. l During ICI401 replacement. l During circuit board (Main or Sub) replacement.

TL1407

PC0 D/A-C

TL1408 PC0 D/A-C

____--_____

1 .o * 0.05

U-I

-____ -.

l During circuit boards (Main and Sub) replacement.

3. PC0 D/A-C adiustment

Test point

Mode Procedure

Examples

TLI 407 No input

1) Call the adjustment mode (V-ADJ).

2) Set the address to “23”, and call the data.

3) Vary the data with the FF and REW keys to set the signal appearing at TL1407 to 1.28 Vp-p + 0.05.

l During E*PROM replacement l During IC4401 replacement. l During IC1401 replacement.

0 During circuit board (Main or Sub) replacement.

1.28 + 0.05

l During circuit boards (Main and Sub) replacement.

1 o-9

Page 51

4. AGC adiustment

1 Test point 1 TL1402

Mode

Procedure

100% white signal (half colour bar)

1) Call the adjustment mode (V-ADJ).

EE mode

2) Set the address to “24” and call the data.

3) Vary the data with the FF and REW keys to set the signal appearing at TL1402 to 1 .OVp-p rt 0.05.

Examples

l During E2PROM replacement. l During IC4401 replacement. l During ICI401 replacement. l During circuit board (Main or Sub) replacement.

l Durino circuit boards (Main and Sub) replacement.

5. Frame lack adjustment

Procedure

2) Set the address to “21” and call the data.

3) Vary the data with the FF and REW keys to set the “80”.

Examples l During E2PROM replacement.

ADJUSTING THE LCD CIRCUIT * To make this adjustment, set the backlight switch to the “NORMAL” position.

VL-PDl U

(Wiring board diagram: Main Side B)

TL800(HSY) VCO free-run

I \

TL803( B OUT) DAC full-scale

TL806(BL_GND) Operation of lamp system safety defection circuit

TL808(BL_PWR)

‘Operation of lamp system

safety defection circuit TL807(BL_PWR)

-Operation of lamp system safety defection circuit

- TL801 (R OUT) DAC full-scale

+ TL802(G OUT)

DAC full-scale VCO free-run

1040

\ TL804(C OUT)

DAC full-scale

Page 52

VL-PDl U

1. VCO free-run adjustment

Test point TL800 (HSY) Address VCR ADJ 32

Mode Procedure

VCR AV input

1) Change the VCR ADJ address 53 to FB.

2) Connect the Frequency counter to TL802 and adjust it to the specified rating with the VCR ADJ address 32

3) Set the VCR ADJ address 53 to FF.

Note: Setting the address 53 to FC/FD turns off the LCD screen, but keep changing the data. Ot-herwise

the original screen will not come on again. In such case, the address and the data cannot be checked on the LCD screen.

Adjustment

15734kHz + 1 OOHz rating Examples

l During IC703(E2PROM) replacement.

l During IC801 replacement.

2. DAC full-scale adiustment

Test point Address Mode

Procedure

Adjustment

rating

TL801 (R OUT) TL802 (G OUT) TL803 (B OUT) TL804 (C OUT)

VCR ADJ 3D (R) VCR ADJ 3E (G) VCR ADJ 3F (B) VCR ADJ 29 (C)

VCR AV input

1) Change the VCR ADJ addresses 46,57 and 69 to 7F, FE and 7F, respectively.

2) With the VCR ADJ address 3D, set the TL801 output voltage to the adjustment rating, and with the oscilloscope, set the peak voltage also to the adjustment rating, in such a way that the both TP’s voltages will be averaged into the rated mean value.

3) With the VCR ADJ address 3E/3F/29, set the TL802/803/804 output voltage to the adjustment rating, and with the oscilloscope, set the peak voltage also to the adjustment rating. ((Same as in Step 2) above)

4) Set the changed address data back to normal.

Note: Setting each address data back to normal leaves the LCD screen white. At this time, turning off and

on the main power will restore the screen (the lithium battery should be removed).

1 .OOOVp-p + 1 OmV

Examples

1 .OOOV f 1 OmV

_A__

A ~

l During IC703(E2PROM) replacement. l During IC801 replacement.

10-11

Page 53

3. COM-Bias adjustment

Test point Address Mode Input signal 40% White (or gray scale) signal

Procedure 1) Input white 40% signal as AV input.

Adjustment Minimum

rating Set the point to make the black portion blackest.

Remark Examples

LCD panel display area VCR ADJ 33 VCR AV input

2) Set the illuminometer (TOPCON IM-3) on the LCD panel surface. (Shut off the external light.)

3) Minimize the ripple of output waveform of illuminometer.

Response time : 0.6 sec.

Make this adjustment after 5minute or longer aging.

l During IC703(E*PROM) replacement. l During LCD replacement.

l During circuit board (Main) replacement.

4. White Balance adjustment

Test point

Address Mode VCR AV input

Procedure 1) Feed 40% white signal to the AV input jacks and the standard monitor.

Adjustment

rating Remark Examples

LCD panel display area VCR ADJ 30 (R) VCR ADJ 31 (B)

2) Set the Colour luminance meter (TOPCON BM-5) on the LCD panel surface. (Shut off the external light.)

3) Adiust the VCR ADJ addresses 30 and 31 until it became the same as that of the standard monitor. Set of the standard W=VF-HL3-136 Set of the limit Make this adjustment after 5-minute or longer aging.

l During IC703(E*PROM) replacement.

0 During LCD replacement.

R=VF-HLl -048 G=VF-HLI -050 B=VF-HLI -052

l During circuit board (Main) replacement.

VL-PDl U

5. Operation of lamp system safety detection circuit

Test point Mode

Procedure

I I

Remark

Examples

LCD panel display area VCR AV input

1) Set the user bright center.

2) Make sure that the lamp indication appears when the 12 ohm (2W) resistor is put between TL807, 808(BL_PWR) and TL805,806 (BL_GND).

BL CTL = Nomal

Make this adjustment after 5-minute or longer aging.

l During IC703(E*PROM) replacement. l During IC8800 replacement..

10912

Page 54

L-PDl U

ADJUSTMENT OF VIEW FAR CIRCUIT

TL8814(VG)

TL8805( VF VCO

- TL8826 VF VCO

(Wiring board diagram: Main Side A)

1. VF VCO adjustment

Test point 1 TL8805 (HSY)

Address VCR ADJ 70 Mode VCR AV input Procedure

Adjustment 15.734kHz (NTSC) + IOOHz

rating Remark Examples l During IC703(E2PROM) replacement.

2. VF bright adjustment

Test point TL8814 (VG) Address VCR ADJ 76

Mode VCR AV input Procedure 1) The input signal must be 3-step wave.

Adjustment 7.5kHz * 0.1 Vp-p

rating

1) Connect TL8826 to 3V.

2) Connect TL8805 to the frequency counter, and adjust to the adjustment standard value at address 78.

3) Open TL8826.

l During IC8800 replacement.

2) Connect TL8825 (lC8800 pin 53) to GND.

3) Adjust the pedestal interval of waveform of TL8814 to the specified level.

(Wiring board diagram: Main Side B)

CJg.center _ ___-_-.__- _____ -_-_-.-__

GND

Remark Examples l During IC703(E2PROM) replacement.

l During IC8800 replacement.

7.5 Ik 0.1 vp-p

1043

Page 55

3. VF contrast adiustment

Test point TL8814 (VG)

Address VCR ADJ 75 Mode

Procedure

rating

Remark Examples

VCR AV input

1) The input signal must be 3-step wave.

2) Connect TL8825 (IC8800 pin 53) to GND.

3) Change the address 71/72 to 00.

4) Adjust the pedestal -100% interval of wave form of TL8814 to the specified level.

0.85 + O.lVp-p Adjustment

l During IC703(E*PROM) replacement. l During IC8800 replacement.

VL-PDI U

, n,l 0.85If:O.l Vp-p,

GND

4. VF y 1 adjustment

Test point TL8814 (VG) Address VCR ADJ 72 Mode VCR AV input

Procedure 1) The input signal must be 3-step wave.

2) Connect TL8825 (IC8800 pin 53) to GND.

3) Adjust the pedestal -50% interval of wave form of TL8814 to the specified level.

Adjustment

rating

1.5 + 0.1 vp-p

r\ 1.5kO.l vp-p

J-L ”

Remark Examples

5. VF sub briaht

Test point 1 View Far panel area Address VCR ADJ 74 (R) VCR ADJ 73 (B)

Mode VCR AV input Procedure

Adjustment rating Remark Make this adjustment after 5-minute or longer aging. Examples

l During IC703(E*PROM) replacement. l Durina

IC8800 replacement.

R/B adiustment

1) Feed 40% white signal to the AV input jacks and the standard monitor.

2) Adjust the tone of the colour with the VCR ADJ addresses 73 and 74 until it becomes the same as that of the standard monitor.

l During IC703(E2PR.0M) replacement. l During IC8800 replacement.

10-14

Page 56

bfL-PDl U

ADJUSTING THE TOUCH PANEL CIRCUIT

1. Touch panel position detection adjustment

Test point Mode VCR AV input Procedure 1) Enter the adjustment of touch panel adjustment mode.

Examples

LCD panel display area

2) Press successively the two-point OSD indication which appears on the LCD indication surface. Note: To set the touch panel adjustment mode, press “CONTINUE” -+ “TEST” on the remote control for

adjustment, adjust the address to “OE” with FF/REW, and press the PB key.

ADJUSTING THE MIC AMP CIRCUIT

(Wiring board diagram: Main Side B)

TL603(INT MIC L)

EE level check \ Frequency character check

TL604

(Audio-R out) EE level check Frequency character

check

EXT MIC

TL605 (Audio-L out)

EE level check Frequency character

check

EXT MIC

TL2402

(EXT MIC R) EXT MIC

TL2401 (EXT MIC L) EXT MIC

+ TL601 (INT MIC R)

EE level check

1. EE level check

Measuring instrument Valve voltmenter

Test point TL605 TL604

Mode Adjustment rating -1OdBs I!I 3dB

1 Test signal IlkHz -54dBs sine wave

Procedure 1) Input 1 kHz, -54dBs sine wave into TL603(lNT MIC L), TLGOl(INT MIC R).

Remark TL608 : OPEN Examples

P-ON (CAM)

2) Make sure that the signal level of TL605 Audio-L out and TL604 Audio-R out is within the standard limits.

IO-15

Page 57

2. Frequency character check

Measuring instrument Valve voltmenter

Test point TL605 TL604

Mode Adjustment rating

Test signal Procedure

1 Remark

Examples

P-ON (CAM) (1 kHz standard) IOOHz : -2dB + 3dB

1 OOHz, 1 OkHz -54dBs sine wave

1) input IOOHz, -54dBs sine wave and then IOkHz, -54dBs sine wave into TL603 (INT MIC L) and TL601 (INT MIC R).

2) At this time make sure that the signal level of TL605 Audio-L out and TL604 Audio-R out is within the standard limit (1 kHz standard).

TL608 : OPEN

3. EXT MIC adjustment

1 Measuring instrument 1 Valve voltmenter

Test point TL2401 TL2402

1 Mode 1 P-ON (CAM)

Adjustment rating Test signal

Procedure

Remark Examples

-8dBs + 3dB 1 kHz -63dBs sine wave

1) input 1 kHz, -63dBs sine wave into TL2401 (EXT MIC L), TL2402(EXT MIC R).

2) Make sure that the signal level of TL605 Audio-L out and TL604 Audio-R out is within the

standard limits.

TL608 : Connect the GND

VL-PDl U

IOkHz : -5dB + 3dB

DV INTERFACE ID SETTING

1. DV interface ID setting

Address Mode Adjustment rating

Procedure

17E, 17F, 180, 181, 182

VCR

*1*2, *3*4, 0*5, 00, 01

1) Using the 12 command, set the VCR adjustment mode.

2) Using the 20 command, give the E*PROM Write permission.

3) Set the ID numbers as follows.

High-order 20 bit OlOOOh 41 OOOh-4FFFFh For OlOOOh 50000h-5FFFFh For Line 2 (for 65,535 sets) 01 OOOh 60000h-6FFFFh For

OlOOOh

The high-order 20 bit is set with OlOOOh fixed. For low-order 20 bit, individual ID number is set

for each set within the limits specified above for each production line.

4) Using the command, set Write inhibition.

5) Using the command, cancel the adjustment mode.

Note: Low-order 20 bit

*5*4*3*2*1 h

Low-order 20 bit

OOOOOh-OOFFFh

Line 1 (for 61,440 sets)

Line 3 (for 65,535 sets)

Service and repair parts (for 4,095 sets)

lo-16

Page 58

L-PDl U

1 O-2. Camera Section Adjustments

1 O-2-1. Camera section service

(1)Camera adjustment is performed after the set has been completed. (2)Subjects, measuring instruments and jigs needed for camera section service and adjustments

l Gray scale chart l White chart l Colour bar chart l Oscilloscope l Digital voltmeter l Vector scope l Frequency counter

l Illumination meter l Colour temperature meter l Colour temperature conversion filter HOYA “LB-1 65” l Colour video monitor l Video output cable l Halogen lamp: 2 PCS. l AC adapter

l Extension cables

l Remote control unit for servicing

10-2-2. List of camera jigs and tools

Colour temperature

PC plate connector drawer

7 Remote control until for servicing

conversion filter JiGHOYA-LB165

JiGTH-SSI 0

RRMCG0033TASA BT

Note: N indicates a new jig.

L- by

_- b-

10-2-3. Adjusting the camera unit

(l)Preparations for adjustments and items to be checked

1) Set up the light box so that the entire pattern is evenly lit. Set the colour temperature to 3200OK.

2) Use test patterns that are not dirty nor discoloured.

3) If the electrical circuitry gets in trouble, be sure to pinpoint the trouble spot with a measuring instrument and repair or replace the defective part.

(2)Remote control for servicing RRMCG0033TASA

To adjust the camera section of this machine, the remote control for servicing (RRMCG0033TASA) is used. The adjustment is made in such a manner that the remote control writes necessary data by way of the microprocessor to the specific addresses on the E2PROM (IC502 and the ROM on the lens unit).

1) To adjust the camera: Press the “CONTINUE” key first and then the “CAM ADJ” key.

This will show

CAM ADJ

. . . . . ., . . . . . ., . . . . . ., . . . .,

. ::::::

i: :: :::

on the LCD screen, thereby having the camera unit ready for the adjustments.

. . . . . . . : . . . . . i . . . . . i . . . . . i

10-17

Page 59

2) Descriptions of the displays

VL-PDl U

CAM

. . . . . . . . . . . . ., . . . . . . .

: :: :: :::

::::i .

. . . . . . . . . . . . .

.....-.

. . . . i . . . . . . i : ,....i

ADJ (Indicates the camera adjustment mode.)

. . . . . . . . . . . . . . . . . . .,

: :: :: :::

::.:: .

: :: :::

.-.....

(Address value) (Data value)

*The address values for this machine range from 0000 to 05FF. *The data include byte data (the last two digits are effective) and 2-byte data (the last three digits are effective).

3) Descriptions of the remote control keys “FF” key:

Increases the address and data values.

“REW” key: Decreases the address and data values.

“PLAY” key: Specifies addresses and calls the data.

This key also fixes (i.e., writes to the E2PROM) the data values.

“STOP” key:Clears the data to enable the selection of address.

4) Operation flow > FFor REW -----+ PLAY - FFor REW ------+ PLAY ---+ STOP

Address is selected and specified, with the data called. Then the called data are selected and fixed. The operation flows in this sequence.

5) When the adjustment is complete:

Press the “CONTINUE” key to let the “CAM ADJ” display disappear from the screen. Note: Before terminating the adjustments, make sure that the adjustment mode is neither the auto-focus function

adjustment mode nor the camera signal system adjustment mode (these modes are mentioned later).

Camera unit adjustment modes The camera unit is adjusted in two types of modes: the auto-focus function adjustment mode and the camera signal system adjustment mode.

_ ’

Note: Each E2PROM contains the adjustment item data as shown below. If it is changed, data rewriting and confirmation

of latest data must be performed.

1) E2PROM on lens unit of camera head section Lens data, LCD drive timing data

2) IC703 on main unit Signal system adjustment data

(3)Auto-focus function adjustment mode

l The camera unit uses a microprocessor-controlled auto-focus zoom lens.

The auto-focus circuit incorporated in this unit is designed to execute the image processing where the focusing action is done by taking advantage of the fact that the high-frequency components in the image signals increase as the focus intensifies. Moreover, to achieve high magnifying power with a small lens, the camera unit incorporates the inner focus system in which the focus is shifted by moving the master lens (rear lens) back and forth. This inner focus system is a full-range focus type by which the focus can be shifted from approximately 10 mm to the infinity. It should be noted,

however, that since the closest subject distance at the telephoto end is fixed at 1.5 m, subjects in a closer range than

1.5 m at the telephoto end will be out of focus. For this reason, the unit is designed so the zoom control is automatically

shifted to the wide angle side until the position is found where the subject can be focused on.

In the auto-focusing system of this until, the following constitute the important factors:

l Master lens position detection data l Iris position detection data

.Zoom lens position detection data

These detection data are handled and stored by the microprocessor, lens by lens, into the E2PROM. Therefore, in the following cases, the auto-focus function adjustment is required:

*When the lens has been replaced @When the CCD has been replaced *When the E2PROM (located on the lens unit or IC502) has been replaced

1) Shifting to the auto-focus function adjustment mode Set the data for the address “05FE” to ” [.y:i[.y,< 01 ‘I.

This makes the screen fade temporarily in white and shifts to the auto-focus function adjustment mode.

*When this adjustment mode has been shifted to, make the adjustment according to (5) Camera unit adjustment

procedure.

* In this adjustment mode, the lens can not be operated.

lo-18

Page 60

dL-PDI U

2) Shifting to the normal operation mode Set the data for the address “05FE” to ” ~.1_j~.‘.~_j FF”.

This makes the screen fade temporarily in white and shifts to the normal operation mode.

Press the “CONTINUE” key, and the “CAM ADJ” display goes out of the screen, enabling the normal operation.

(4)Camera signal system adjustment mode

In the camera signal system adjustment mode, the automatic white balance is disabled to allow for the adjustment of the camera unit. At this time, the white balance mode is fixed at the INDOORS mode and the focus mode is switched to the manual focus mode.

Shifting to the camera signal system adjustment mode

Set the data for the address “OOBO” to ” i._../ i..../ 00”.

This shifts the mode to the auto-focus function adjustment mode. *When this adjustment mode has been shifted to, make the adjustment according to (5) Camera unit adjustment procedure.

Shifting to the normal operation mode

Set the data for the address "OOBO" to ” ~_~.~$~~_~~ FF".

This shifts the mode to the normal operation mode.

Press the “CONTINUE” key, and the “CAM ADJ” display goes out of the screen, enabling the normal operation.

(5)Camera unit adjustment procedure

.a..... .......

1. Auto focus adjustment

2. Iris basic adjustment

3. Black balance adjustment/A/F noise adjustment

4. Iris AE adjustment

5. White balance coarse adjustment

6. Colour gain coarse adjustment

7. White balance adjustment.

8. Colour gain adjustment

9. Auto white balance adjustment

* The above 1. Auto-focus function adjustment and 2. iris basic adjustment are performed in the auto-focus function

adjustment mode, whereas the other adjustments are made in the camera signal system adjustment mode.

* After completing the auto-focus adjustment mode, set the camera signal system adjustment mode. (Take care that the

adjustment mode transfer address is different.)

(6)Gyro unit replacement method

I) Replacing the lens without replacing the gyro sensor unit

The gyro adjustment data has been written in the E2PROM of lens. Write the data of address 456 to 459.

2) Replacing the gyro sensor After replacing the specified gyro sensor, write the following

Address Data

456 01 457 EO 458 03

1 459 1 80 1 Replacing Sl (RSNSG0005CEOl) 1

Replacing S2 (RSNSG0004CEOl) Replacing S2 (RSNSG0004CEOl) Replacing Sl (RSNSG0005CEOl)

IO-19

data in the address 456 to-459.

Page 61

1 O-2-4. Adjustment procedures

Item

(1) Auto-focus adjustment

Adjustment method

Set the unit to the auto-focus function adjustment mode and write data to the address “05FD” one after another. This executed the adjustments automatically. The items to be adjusted are as listed below. Every time an adjustment is made properly, the data “FF” is written to the address. After each adjustment, make sure that the adjustment has been made properly, and then go on to the next adjustment item.

Address Data Adjustment item

05FD . OOOC MR censor adjustment

0012 WIDE end adjustment 0008 TELE end focus 00 position adjustment 0006

WIDE end focus = position adjustment

Note 1: To adjustment of 00 position is executed by actually picking up the image

of subject. For this adjustment use the subject with clear profile. Especially, if the adjustment of TELE end focus 00 position is made without picking up the image of remote subject, adjustment failure may occur.

Adjustment of WIDE end focus 00 position: 3 m or more Adjustment of TELE end focus 00 position: 50 m or more

Note 2: In case of = position adjustment the field depth is important to ensure the

adjustment accuracy. If the field depth is high, the focus becomes too stable , which may cause incorrect adjustment of 00 position. Therefore the adjustment must be made with low field depth (with iris opened).

The iris can be opened with the high-speed shutter.

1. It returns to the normal operation mode.

2. In the normal operation mode, set the high-speed shutter mode until the iris is opened. (Refer to the operation manual.)

3. Display “CAM ADJ” with the remote control for service.

4. It shifts to the auto-focus adjustment mode.

5. Perform the 00 position adjustment.

6. After completing the 00 position adjustment, return the high-speed shutter

mode to the normal mode.

(2) Iris basic adjustment

This is for adjusting the operating point of the hole element installed in the iris meter of the lens.

Set the unit to the auto-focus function adjustment mode and write data to the

address “05FD” one after another. This excutes the adjustments automatically.

The items to be adjusted are as listed below. Every time an adjustment is made properly, the data “OOFF” is written to the address.

Address Data Adjustment item

05FD

* After completion of 1. Auto-focus adjustment, 2. Iris basic adjustment once

restore the regular operation mode. Data “05OF” is written in the address “01 EB”.

(3)Blackbalanceadjustment/A/Fnoise 1) Prior to the adjustment, initialize the data for the addresses “007A”

adjustment

“007C”, “007E”, “0080”, “0082”, “0084”.

Write ” i:E i:E FF” (the last two digits are effective) to all of these address.

2) In the camera signal system adjustment mode (the data “~‘-‘.‘~?‘*‘~OO” is written to

the address “OOBO”), write the data “i*““i i? 01” to the address "OOBl ” This starts the adjustment automatically. When the adjustment is completed properly, the

data “OOFF” is written automatically.

0009 Hall offset adjustment OOOA Iris offset adjustment OOOB

Iris close adjustment

. . . . . . . . . . . .

L . . . . . ‘. . . . . .

1 O-20

Page 62

V’L-PDl U

Address: “OOB2” AE CVT Measuring instrument:

Object:

Data variation width:

S terminal luminance signal output (75 Q termination)

Oscilloscope (horizontal sync)

G rey scale

“0000” to “OOFE”

level

(not includin

5) White balance coarse adjustment Measurement terminal:

EE output

(1)lndication on the vector scope is observed in the grey scale standard record

state, data of address “0018” and “001 A” are rewritten, and an adjustment is made so that the luminous dot is located in the position of burst ratio:

Address: R-Y 0 + 5%

“0018” CGAIN KR W

B-Y 0 + 5%

“001 A” CGAIN-KB-W

Measuring instrument:

Vector scope

Object:

G rey scale

Data variation width:

“0000” to “03FF”

6)Colour gain coarse adjustment Measurement terminal:

EE output

Address:

“012B” CGIN RYG “012D” CGIN BYG “0128” CMAT RYG

(l)The colour bar chart is imaged, and the picture angle is adjusted so as to get

white level 650 mV. Indication on the vector scope is observed, the data of address “012B”, “012D”, “0126” and “0128” are rewritten, and setting is made so that the red and blue luminous dots are located in the following positions. The gain of vector scope must be set on 75% amplitude point on the B-Y axis.)

(The red phase is adjusted at the address “0218”, and the blue phase is

adjusted at the address “0126”.)

“0126” CMAT BYG

Measuring instrument:

Vector scope

Object:

Colour bar chart

Data variation width:

“0000” to “OOFF”

Red amplitude Blue amplitude

Red phase

Blue phase

1.60 + 0.1 time (burst ratio) 1 .I5 + 0.1 time (burst ratio)

103O k 2”

344” t 2”

1 o-21

Adjustment address

: “012B” : “012D”

n “0128” .

- “0126” .

Page 63

EE output

Address:

“0018” INDOOR W/BR “001 A” INDOOR W/BR

Measuring instrument:

Vector scope

Object:

G rey scale

Data variation width:

“0000” to “03FF”

Address:

“012B” CGIN RYG “012D” CGIN BYG “0128” CMAT RYG “0126” CMAT BYG

Measuring instrument:

Vector scope

Object:

Waveform monitor colour bar chart

Data variation width:

“0000” to “OOFF”

(1) Colour gain adjustment is performed repeatedly.

Adjustment address Red amplitude Blue amplitude

1.60 k 0.05 time (burst ratio) 1 .I 5 + 0.05 time (burst ratio) 103O + I”

344” + 2”

VL-PDl U

: “012B” : “012D”

n “0128” .

= “0126” .

(9)Auto white balance adjustment

l Measurement terminal:

EE output

l Address:

“006A” OUTDOOR R “006C” OUTDOOR B

l Measuring instrument:

(l)The colour temperature conversion filter (LB1 65) is mounted in front of lens. (2) Indication of vector scope is observed in the grey scale standard record state,

and an adjustment is made so that the luminous dots are located in the following positions:

R-Y 0 + 5% (burst ratio) B-Y 0 + 5% (burst ratio)

Vector scope

l Object:

G rey scale

l Data variation width:

“0000” to “03FF”

After completion of adjustment set the regular operation mode (the data ” ..’ _: .I,,: FF” is written in the address “OOBO”.)

1 o-22

Page 64

VL-PDl U

11 m USEFULTIPS (PROBLEMS DIFFER FROM THOSE FOUND ON VHS OR 8MM

DECKS BECAUSE THE SIGNALS ARE DIGITALLY PROCESSED.)

>amera (EE mode)

JCR (EE mode)

Blueback fails

to appear.

J c

Problems

Major circuits to be checked

l CCD l Camera circuits (CDS, ADC, DSP)

. PPW (IC4401)

l LCD_DSP (ICSOO) l System controller (IC701)

. VI0 (IC1401)

l Mechanical controller (IC7701) l LCD_DSP (ICSOO)

l System controller (IC701)

0 Zoom (IC251)

l CLOCK GENERATOR (IC471)

Camera (REC mode) VCR (PB mode)

Picture fails to appear when tape recorded on this unit or another unit is played back. (EE OK)

Camera (REC mode) VCR (PB mode)

Blueback when tape recorded on this unit or another

unit is played back. (EE OK)

/ .

l Zoom (IC251) l CLOCK GENERATOR (IC471)

. PLL (lC3401)

l ATF (lC3402) l Head amplifier (IC301)

Dirty or defective video head

11-l

Page 65

VL-PDI U

There is considerable

randam block noise.

Page 66

IC802 24pin R Output(1 H)

IC802 6pin R Input (1H)

LCD Panel

“W

0 G m @

@ B >@ @

LCD DSP LCD INTERFACE

PPW

j q

El401 81 pin Y Output

IC4401 112pin ZYP3 Input

IC4401 27pin LDC3 Output

IC4401 88pin C Output

IC4.401 121pin ZCP3 Input

CAMERA DSP

WAVEFORM DIAGRAM (DURING COLOUR BAR RECORDING)

Page 67

IC441 175pin RecGATE Output

‘*

I I ’ 5ne’d

i-r--

1 =p*lO

I ’ ’ 5g’d

I I I

IC441 174pin RecDATA Output

363301

BTOB

IC441

TRANSPORT

CODEC

PPW

REC GATE

IC441 8pin VDATA3 Input

“” v

0 =l*ln

ZYP

ZCP

WAVEFORM DIAGRAM (DURING COLOUR BAR RECORDING)

Page 68

s - 2

ZQOM - ; t _

CODEC

lC3404 Spin Input

tinkId

! '

i I

TRANSPORT

EQ/ATF

CLK

lC3402

>@) @-

PE DATA

lC3404 3pin Input

IC3401 54pin Input

DIAGRAM (DURING COLOUR BAR PLAYBACK)

WAVEFORM

lC3402 4pin PBDATA Input

We/d

IC441 8pin VDATA3 Output

D ‘P:lo

% 1

Page 69

REC system

same as in

TRANSPORT

PCM

IC1650

REC DATA

VDATA

IC441QD Input

AIDAT

AUDIO l/O

I$607 AUD-L ADIN~~O’

M,C L

AUD-R ADIN

MIC

ICI 601 @Output

WAVEFORM DIAGRAM (1.6 kHz SINE WAVE)

Page 70

AUDIO OUT R

@,,,I0 OUT L

AUDIO I/O

PCM

1 IC601 1

D-L DA OUT

IC1650

- -

I @I-+

1 AUD-R-DA-OUT j@

DODAT -

IC441

TRANSPORT

From lC3404

PB system

same as in Video

WAVEFORM DIAGRAM (1.6 kHz SINE WAVE)

IC441 mADATA Output ICI601 ODODAT Input

Page 71

313

MECHA

) OUT

PLL

IC3401

IC402

Shuffling

Memory

b lC7451

1111

PPW

IC4401

I I I

IC201 b IC251

T/G 4 b

ICI2

LENZ

lC552

CAMERA DSP ZOOM

DRIVER

1 I

IC702

+ CAMERA

IC501

+ LENZ 4

MICON

163702 4

CHARAGen

___________ (‘ONTROL___1__-,

I D I I IP@ I I b -REC (EE)+

Page 72

31[1

;

I I I

.YY.~,Y .______________.__--

::..

. . . . . .

y:::::..

.:.:.:.:.:.:.:.,

:.:.:.:.:.:.:.:.:.,

ICI 51

IObit A/D Conv

VHIADS933Y

LAGC OUT

BLOCK DIAGRAM i

/ PPW SECTION

1 PPW

; LCD DSP

ZHDP

ZVDP

=LKp.-g CODEC

ZUVSELP

PADDAO--74

+VDX, HDX

FCK, RBID DZy()-7

ADCLK ADINO-9

8 , I

I I I

““1 _R:iij:

ZYPb -7

ZCP_o--7

1111111111 1

MRYIO-17

CDHDP. CDVDP

CDUVSELP, CCLKI 35

IC251

ZOOM DSP

RHIXh0553TA

WRTRI

fl MRCIO-13

m I m

- -CDYO “7, CDCO ~7 -

180P

WE1

m I m

--ii2

WXAD2 m

RXAD2 m

i 3:AGCOUT j

[ 2:VRT

/ 4:VRB

; 10:MCK i

i 6:HDX

1 7:HDX

MCKA

48P

ICI2

PBLK

CLPX, BCPX

FSX, FCX, RSX

HI, H2

I I

L-, 1 24p /*VRT, “FIB4 sc1-scj51 L”RT, “,,i 48p /

OFD

Vl, v2, v3, v4

VHILR38573

ICI3

V-DRIVER

‘, ;

OFD

VIX, v2x

VHIX, VH3X

- v3x, v4x

VHlUPD16510

Page 73

IC401

CODEC

RHIX0530TA

176P

IC804

R OUT

,,,,GOUT-..I

VHiMM1323XJ

LCD IhlTERFACE

B OUT

C OUT

24P

FRPV -

CLD, SPD, CTR

EXI, EX2, EX3

SPS, RES, CLS, LOW

LCD UNIT

11111111

PPW

IC4401

RH-IX0522TAZZ

A-Y 0,UT

OSD VD

A-C OUT

OSD HD

163702

CHARA GENE

REC CHARA

IC800

LCD DSP

RH-IX0422TAZZ

RHIX0588TA

REC CHARA BLK

VIDEO I/O

48P

VHICl 11306F

IC802

1M SRAM

RHIX0560TA

LCD UNIT

I I I

* - - - - --- - - - - - - - - - - CDUVSELP, CDHDP, CDVDP

ZUVSELP

VIDEO IN/OUT

P2401

i+ SEP Y OUT I I

SEP C OUT

Page 74

L-PDl U

13-4. CODEC SECTION BLOCK DIAGRAM

13-4

Page 75

;

SYSTEM

CONNECT

__.;

: .,

: /

j IntMlC

AUDIO L l/O

_ . AUDIO R l/O

24P

DFSP +

IC1601

DFSl

16bit DA. AD

VHIPCM3006T

PDAD,

ADMCK

CMODE-

---J ,---

PDDA

60P

SC7404

SYSTEM

CONNECT

t CS, RD, WR

+ AIDAT

R DA OUT I

L !A OUT

. - - SPOUT. - q SPEAKER ;

L---l

VHIBH7761KV

AUD L AD IN

AUD R AD IN

I-

;

J7401

DVCONNECT

. . . . . . . . ..__________........................

; .,

lC7451

IEEE1 394

VHIXMB66611

100P

x7451

0.192MHz RCRSC012TTAZZ -

CODEC

BLOCK

TRANSPORT

*--ADATAO 7-m

PCM

IC1650

RHIX0469TAZZ

GSDEB, AIDE b

100P

DFIP

FRPSA --L-

RClLZ0263TAZZ

RCRSCOlO7TAz

REC (EE)m-b

I I I I I I I I sP6m I I I I - I I

- - - - n REC (EE), PB- - - - +

Page 76

To VCR

PPW Block

PTW Block

Syscon Block

IC251

PB Y/C Digital Data

I ”

Serial Data

Control/Data Bus

REC & PB Y/C Digital Data

Camera PWB Unit

IC501

Lens

p-cot4

=Jr

Camera Head PWB Unit

Lens Unit

Page 77

EAD AMP P.W.B.

Component Side SIDE A

VL-PDl U

Wiring Side SIDE A

P307

mmn Elm

Wiring Side SIDE B

16-21

Page 78

F/L-PDl U

CCD P.W.B.

Component Side SIDE A

Wiring Side SIDE A

Component Side SIDE B

Wiring Side

SIDE B

16-22

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Page 100

SHARP VL-PDIU, VLPD1U Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual

2. SPECIFICATIONS

4. DISASSEMBLY OFTHE SET

7-5. Checking and adjustment of tension roller position in record (playback) mode

7-7. Checking of loading back tension

8-1 m Adjustment locations

Phase matching