SHARP VL-PDIU, VLPD1U Service Manual

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

1.

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

2.

SPECIFICATIONS

3.

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

4.

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

.

MECHANISM ADJUSTMENT JIGS AND PARTS

5

.

INSPECTION AND MAINTENANCE

6

ITEMS AND INTERVALS

7.

MECHANICAL ADJUSTMENTS AND CHECKS

8.

TAPE RUNNING ADJUSTMENT

.

MECHANICAL SECTION ASSEMBLY AND PARTS REPLACEMENT

9

(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

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

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5-I

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

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

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

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

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

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..~...............................................

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

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

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

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

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

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ..~................................................................

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

Page

l-l
2-l
3-1

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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.

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.

i

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

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-

A

I
0

A

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.

A

AA

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

A

1
0

A

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.

0

A

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.

I

12

Camcorder

seulement

A

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

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).

21

I

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

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

32

I

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.

.

0)

r

0

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.

4-1

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.

4-2

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.

4-3

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

I

44

ht

V/F LCD panel

I

L-PDl U

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)

4-5

VL-PDl U

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

L-PDl U

5. MECHANISM ADJUSTMENT JIGS

5-I. Mechanism check adjustment jigs

4 .

Tension gauge 4N

(400gf)

JiGSG0400

AND PARTS

BK

0 r

measurement

\\

l For measurement of

pinch roller pressure.

5.

Dial tension gauge 9DAPTG-1 O-l OW

6 .

Torque screwdriver

JiGTD1500RTDH CB

150mN*m (1.5kgcm)

7.

Master plane SEQMP-VLPDI CL

8 .

Height adjustment jig 9DAHG-PDl

9 .

Height adjustment SEQDRiVER-DH5 BC

screwdriver

1

CA

4 l pTG-‘o

0

0

\

0

BZ

1 I

3

tk

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)

I

51

Tolerance + 0.1

/’

1 1.4 1 *
b&

Tip thickness 0.5

3

(2) Precision screwdrivers (Phillips head and slotted)

<How to make jigs for mechanism checking and adjustment>

(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)

3

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

VL-PDl U

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,

5

?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

a,

g Swing arm boss

v)

Intermediate gear A shaft,

?

.-

intermediate gear B shaft

6

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>

0

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

Note:

17

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

0

- *o

* 0 * 0 l The tape fails to run.

l The tape becomes abnormal.

0 00 0

0

slack.

l Block-type noise

0

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.

i

10 11

Cosmo Hydro HV22

. . . .

Excepting intermediate

gear A and B

a

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.

Y

8

PBVS/REW winding torque - * - * *

5

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

$

sion

S

E

Tu reel base ratchet torque

;5

‘t

S reel base no-load torque

I?

AHC

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

0

[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

0

0 l l l Replace.

I

61

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

VL-PDI U

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..

N

1

Fig. 1.

6-2

L-PDl U

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.

<Precautions>

(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

VL-PDI U

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.

B

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).

<Standard>

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

7-2

L-PDl U

(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.

<Caution>

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.

4.

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

(2)Adjustment

1.

Set the playback mode without loading the tape.

2.

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

3.

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.)

4

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

5:

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)

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

VL-PDI U

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

VL-PDl U

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.

<Standard>

1.8 + 0.3N (180 + 30gf)

<Caution>

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.

OK

Fig. 10.

NG

Fig. 11.

7-5

VL-PDI U

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

3

. 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’.

VL-PDl U

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

VL-PDl U

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”

a

c

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

1

A

(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

\

B

0

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)

I

83

L-PDl U

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

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.

<Precautions>

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.

.

l

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

VL-PDl U

(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

0

3

Slide chassis

STANDBY mode diagram

L-PDl U

(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)

/

92

PLAYBACK mode diagram

(RECORD, FF, VSF)

I

(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

\

VL-PDI U

T pole base

Tu main brake

STOP mode diagram

9-2. Cassette controller assembly

<Removing>

(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.

<Installing>

(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

/

0

/

@ Down switch angle

J

.

@ Down guide

Slide chassis

\

@I Down guide positioning

Fig. 2.

9-3

L-PDl U

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

+A

Fig. 4

I

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