SHARP 27DVS100 Service Manual

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27DV-S100 27DV-CS10

SERVICE MANUAL

S81Z627DV-S10

TV/VCR/DVD COMBINATION

Chassis No. B00A

27DV-S100

MODELS

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

CONTENTS

» IMPORTANT SERVICE SAFETY PRECATION ....................................................................................... 2

» SAFETY PRECAUTIONS ........................................................................................................................ 6

» ELECTRICAL SPECIFICATIONS ............................................................................................................ 7

» LOCATION OF USER'S CONTROL ........................................................................................................ 8

» DISASSEMBLY AND REASSEMBLY..................................................................................................... 12

» INSTALLATION AND SERVICE INSTRUCTIONS ................................................................................. 16

» PRECAUTIONS IN REASSEMBLING ................................................................................................... 22

» FUNCTION OF MAJOR MECHANICAL PARTS.................................................................................... 23

» ADJUSTMENT, REPLACEMENT AND ASSEMBLY OF MECHANICAL UNITS.................................... 25

» ADJUSTMENT OF THE VCR ELECTRICAL CIRCUITRY..................................................................... 45

» TEST MODE OF DVD SECTION........................................................................................................... 47

» TROUBLESHOOTING........................................................................................................................... 50

» CHASSIS LAYOUT................................................................................................................................. 72

» IC FUNCTION LIST OF DVD SECTION ................................................................................................ 74

» BLOCK DIAGRAM OF TV SECTION.....................................................................................................94

» BLOCK DIAGRAM OF VCR SECTION .................................................................................................. 96

» BLOCK DIAGRAM OF DVD SECTION................................................................................................ 106

» OVERALL SCHEMATIC DIAGRAM ..................................................................................................... 108

» DESCRIPTION OF SCHEMATIC DIAGRAM....................................................................................... 110

» PRINTED WIRING BOARD ASSEMBLIES.......................................................................................... 143

» REPLACEMENT PARTS LIST ............................................................................................................. 155

» PACKING OF THE SET ....................................................................................................................... 185

27DV-CS10

Page

SHARP CORPORATION

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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27DV-S100 27DV-CS10

IMPORTANT SERVICE SAFETY PRECAUTION

Ë Service work should be performed only by qualified service technicians who are thoroughly

familiar with all safety checks and servicing guidelines which follow:

WARNING

1. For continued safety, no modification of any circuit should be attempted.

2. Disconnect AC power before servicing.

3. Semiconductor heat sinks are potential shock hazards when the chassis is operating.

4. The chassis in this receiver has two ground systems which are separated by insulation material. The nonisolated (hot) ground system is for the +B voltage regulator circuit and the horizontal output circuit.The isolated ground system is for the low +B DC v oltages and the secondary circuit of the high voltage transformer . To prevent electrical shock use an isolation transformer between the line cord and power receptacle, when servicing this chassis.

CAUTION: FOR CONTINUED PROTECTION AGAINST A RISK OF FIRE, REPLACE

6.3A 125V

ONLY WITH SAME TYPE 6.3A125V FUSE.

SERVICING OF HIGH VOLTAGE SYSTEM AND PICTURE TUBE

When servicing the high voltage system, remove the static charge by connecting a 10k ohm resistor in series with an insulated wire (such as a test probe) between the picture tube ground and the anode lead. (A C line cord should be disconnected from AC outlet.)

1. Note that the picture tube in this receiver employs integral implosion protection.

2. Replace with tube of the same type number for continued safety.

3. Do not lift picture tube by the neck.

4. Handle the picture tube only when wearing shatterproof goggles and after discharging the high voltage anode completely.

X-RADIATION AND HIGH VOLTAGE LIMITS

1. Be sure all service personnel are aware of the procedures and instructions covering X-radiation. The only potential source of X-ray in current solid state TV receivers is the picture tube. Howev er, the picture tube does not emit measurable X-Ray r adiation if the high voltage is as specified in the “High V oltage Check” instructions. It is only when high voltage is excessive that Xradiation is capable of penetrating the shell of the picture tube including the lead in glass material. The important precaution is to keep the high voltage below the maximum level specified.

2. It is essential that servicepersonel have available at all times an accurate high voltage meter. The calibration of this meter should be checked periodically.

3. High voltage should always be kept at the rated v alue

-no higher. Operation at higher voltages may cause a failure of the picture tube or high voltage circuitry and;also,under certain conditions, may produce radiation that exceeds specifications.

4. When the high voltage regulator is operating properly there is no possibility of an X-radiation problem. Every time a color chassis is serviced, thebrightness should be tested while monitoring the high voltage with a meter to be certain that the high voltage does not exceed the specified value and that it is regulating correctly.

5. Do not use a picture tube other than that specified or make unrecommended circuit modifications to the high voltage circuitry.

6. When trouble shooting and taking test measurements on a receiver with excessiv e high voltage , av oid being unnecessarily close to the receiver. Do not operate the receiver longer than is necessary to locate the cause of excessive voltage.

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IMPORTANT SERVICE SAFETY PRECAUTION

2 2

(Continued)

27DV-S100 27DV-CS10

BEFORE RETURNING THE RECEIVER (Fire & Shock Hazard)

Before returning the receiver 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 receiver.

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

3. To be sure that no shock hazard exists, check for leakage current in the following manner.

» Plug the AC cord directly into a 120 volt AC outlet,

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

» Using to clip leads, connect a 1.5k ohm, 10 watt

resistor paralleled by a 0.15µF capacitor in series with all exposed metal cabinet parts and a known earth ground, such as electrical conduit or electrical ground connected to earth ground.

» Use an AC voltmeter having with 5000 ohm per volt,

or higher, sensitivity to measure the A C v oltage drop across the resistor.

» Connect the resistor connection to all exposed metal

parts having a return to the chassis (antenna, metal cabinet, screw heads, knobs and control shafts, escutcheon, etc.) and measure the AC voltage drop across the resistor. AII check must be repeated with the AC line cord plug connection reversed. (If necessary, a nonpolarized adapter plug must be used only for the purpose of completing these check.) Any current measured must not exceed 0.5 milliamp. Any measurements not within the limits outlined above are indicative of a potential shock hazard and corrective action must be taken before returning the instrument to the customer.

VOLTMETER

1.5k ohm 10W

0.15µF

TEST PROBE

TO EXPOSED METAL PARTS

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CONNECT TO KNOWN EARTH GROUND

SAFETY NOTICE

Many electrical and mechanical parts in television receivers have special safety-related characteristics. These characteristics are often not evident from visual inspection, nor can protection afforded by them be necessarily increased by using replacement components rated for higher voltage, wattage, etc. Replacement parts which have special safety characteristics are identified in this manual; electrical components having such features are identified by “ å” and shaded areas in the Replacement Parts Lists and Schematic Diagrams.

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For continued protection, replacement parts must be identical to those used in the original circuit. The use of a substitute replacement parts which do not have the same safety characteristics as the factory recommended replacement parts shown in this service manual, may create shock, fire, X-radiation or other hazards.

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27DV-S100 27DV-CS10

PRECAUTIONS A PRENDRE LORS DE LA REPARATION

Ne peut effectuer la réparation qu’ un technicien spécialisé qui s’est parfaitement accoutumé à toute vérification de sécurité et aux conseils suivants.

AVERTISSEMENT

1. N’entreprendre aucune modification de tout circuit. C’est dangereux.

2. Débrancher le récepteur avant toute réparation.

3. Les déversoirs thermiques à semi-conducteurs peuvent présenter un danger de choc électrique lorsque le réceqteur est en marche.

4. Le châssis de ce récepteur a deux systèmes de mise à la terre qui sont séparés par un matériau isolant. Le système de mise à la terre non-isolée (chaud) est pour le circuit du régulateur de tension +B et le circuit de sortie horizontale. Le système de mise à la terre isolé est pour les basses tensions C. C . +B et le circuit secondaire du transformateur de haute tension.

PRECAUTION: POUR LA PROTECTION CONTINUE CONTRE LES RISQUES

6.3A 125V

D'INCENDIE, REMPLACERLE FUSIBLEPAR UN FUSIBLE DE MEME TYPE 6.3-125V .

REPARATION DU SYSTEME A HAUTE TENSION ET DU TUBE-IMAGE

Lors de la réparation de ce systéme, supprimer la charge statique en branchant une résistance de 10 k en série a vec un fil isolé (comme une sonde d’essai) entre la mise à la terre du tube-image et le fil d’anodel. (Le corden d’alimentation doit être retiré de la prise murale.)

1. Il est à noter que le tube-image de ce récepteur est intégralement protégé contre l’implosion.

2. Par mesure de sécurité, changer le tube-image pour un tube du même numéro de type.

3. Ne pas lever le tube-image par son col.

4. Ne manipuler le tube-image qu’en porant des lunettes incassables et qu’après avoir déchargé totalement la haute tension.

LIMITES DES RADIATIONS X ET DE LA HAUTE TENSION

1. Tout le personnel réparateur doit être instruit des instructions et procédés relatifs aux radiations X. Le tube-image, seule source de rayons X dons les téleviseurs transistorisés, n’émet pour tant pas de rayons mesur ables si la haute tension est mainten ue à un niveau préconisé dans la section “Vérification de la haute tension”. C’est seulement quand la haute tension est excessiv e que les rayons X peuv ent entrer dans l’enveloppe du tube-image y compris le conducteur de verre. Il est important de maintenir la haute tension en-dessous du niveau spécifié.

2. Il est essentiel que le réparateur ait sous la main un voltmètre à haute tension qui doit être périodiquement étalonné.

3. La haute tension doit toujours être maintenue à la valeur de régime-et pas plus haute. L’opér ation à des tensions plus élevées peut entraîner une panne du tube-image ou du circuit à haute tension et, dans certaines conditions, peut entraîner une radiation dépassant les niveaux préscrits.

4. Quand le régulateur à haute tension fonctionne correctement, il n’y a aucun problème de radiation X. Chaque fois qu’un châssis couleurs est réparé, la luminosité doit être examinée bout en contrôlant la haute tension à l’aide d’un voltmètre pour s’assurer que la haute tension ne dépasse pas la valeur spécifiée et qu’elle soit correctement réglée.

5. Ne pas utiliser un tube-image autre que celui spécifié et ne pas effectuer de modifications déconseillées du circuit à haute tension.

6. Lors de la recherche des pannes et des mesures d’essai sur un récepteur qui présente une haute tension excessive, éviter de s’approcher inutilement du récepteur. Ne pas faire fonctionner le récepteur plus longtemps que nécessaire pour localiser la cause de la tension excessive.

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27DV-S100

27DV-CS10

PRECAUTIONS A PRENDRE LORS DE LA REPARATION

(Suite)

VERIFICATIONS CONTRE L’INCEN-DIE ET LE CHOC ELECTRIQUE

Avant de rendre le récepteur à l’utilisateur, effectuer les vérifications suivantes.

1. Inspecter tous les faisceaux de câbles pour s’assurer que les fils ne soient pas pincés ou qu’un outil ne soit pas placé entre le châssis et les autres pièces métalliques du récepteur.

2. Inspecter tous les dispositifs de protection comme les boutons de commande non-métalliques, les isolants, le dos du coffret, les couvercles ou blindages de réglage et de compar timent, les réseaux de résistance-capacité, les isolateurs mécaniques, etc.

3. S’assurer qu’il n’y ait pas de danger d’électrocution en vérifiant la fuite de courant, de la facon suivante:

» Brancher le cordon d’alimentation directem-ent à une

prise de courant de 120V. (Ne pas utiliser de transformateur d’isolation pour cet essai).

» A l’aide de deux fils à pinces, brancher une résistance

de 1,5 k 10 w atts en parallèle avec un condensateur de 0,15µF en série avec toutes les pièces métalliques exposées du coffret et une terre connue comme une conduite électrique ou une prise de terre branchée à la terre.

» Utiliser un voltmètre CA d’une sensibilité d’au moins

5000 /V pour mesurer la chute de tension en tr avers de la résistance.

» Toucher avec la sonde d’essai les pièces métalliques

exposées qui présentent une voie de retour au châssis (antenne, coffret métallique, tête des vis, arbres de commande et des boutons, écusson, etc.) et mesurer la chute de tension CA en-travers de la résistance. Toutes les vérifications doivent être refaites après avoir inversé la fiche du cordon d’alimentation. (Si nécessaire, une prise d’adpatation non polarisée peut être utilisée dans le but de terminer ces vérifications.) Tous les courants mesurés ne doivent pas dépasser 0,5 mA. Dans le cas contraire, il y a une possibilité de choc électrique qui doit être supprimée avant de rendre le récepteur au client.

Voltmètre CA

1.5k ohm 10W

0.15µF

SONDE D'ESSAI

AUX PIECES METALLIQUES EXPOSEES

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BRANCHER A UNE TERRE CONNUE

AVIS POUR LA SECURITE

De nombreuses pièces, électriques et mécaniques, dans les téléviseurs présentent des caractéristiques spéciales relatives à la sécurité, qui ne sont souvent pas évidentes à vue. Le degré de protection ne peut pas être nécessairement augmentée en utilisant des pièces de remplacement étalonnées pour haute tension, puissance, etc. Les pièces de remplacement qui présentent ces caractéristiques sont identifiées dans ce manuel; les pièces électriques qui présentent ces particularités sont

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identifiées par la marque “ å “ et hachurées dans la liste des pièces de remplacement et les diagrammes schématiques. Pour assurer la protection, ces pièces doivent être identiques à celles utilisées dans le circuit d’origine. L’utilisation de pièces qui n’ont pas les mêmes caractéristiques que les pièces recommandées par l’usine, indiquées dans ce manuel, peut provoquer des électrocutions, incendies, radiations X ou autres accidents.

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27DV-S100 27DV-CS10

SAFETY PRECAUTIONS

Precaution to be taken when replacing and servicing the Laser Pickup.

The product is a Class 1 Laser Product. However Laser component is capable of emitting radiation exceeding the limit for Class 1. It is important that following precautions are observed during servicing to protect your eyes against e xposure to the laser beam.

1. When the cabinet is removed, interlock is defeated (if equipped), the power is turned on without a disk in position, Do not look into the pickup lens.

2. The laser power output of the pickup unit and replacement service par ts are all factory pre-set before shipment. Do not attempt to re-adjust the laser pickup unit during replacement or servicing.

PRODUIT LASER

DE CLASSE 1

CLASS 1 LASER PRODUCT

3. Under no circumstances stare into the pickup lens at any time.

4. Caution-Use of controls or adjustment or performance of procedures other than those specified herein may result in hazardous radiation exposure.

» LASER SPECIFICATIONS

Laser Diode Properties Material : AIGalnP Wave length

D VD: 645~660nm

CD : 770~810nm Emission Duration : Continuous Laser output : Max. 0.6 mW

(Top View)

CAUTION-WHEN OPEN. DO NOT STARE INTO BEAM OR VIEW DIRECTLY WITH OPTICAL INSTRUMENTS.

VARNONG-NÄR DENNA DEL ÄR ÖPPNAD. STIRRA EJ IN I STRÅLEN OCH BETRAKTA EJ STRÅLEN MED OPTISKA INSTRUMENT.

ADVARSEL-VED ÅBNING. SE IKKE IND I STRÅLEN-HELLER IKKE MED OPTISKE INSTRUMENTER.

VARO! AVATTAESSA OLET ALTTIINA. ÄLÄ TUIJOTA SÄTEESEEN ÄLÄKÄ KATSO SITÄ OPTISEN LAITTEEN LÄPI.

VARNING-NÄR DENNA DEL ÄR ÖPPNAD. STIRRA EJ IN I STRÅLEN OCH BETRAKTA EJ STRÅLEN GENOM OPTISKT INSTRUMENT.

ADVARSE-NÅR DEKSEL ÅPNES. STIRR IKKE INN I STRÅLEN ELLER SE DIREKTE MED OPTISKE INSTRUMENTER.

(Back of product)

DVD Unit

NOTE:

Laser beam is emitted when this is open. Do not stare into the beam. Do not view the beam through any optical instrument, either.

Page 7

ELECTRICAL SPECIFICATIONS

TV SECTION

POWER INPUT: 120 V AC 60 Hz

POWER RATING: 165 W

PICTURE SIZE

Width: 37.8 cm

Height: 38.7 cm

Depth: 37.5 cm

CONVERGENCE: Magnetic

SWEEP DEFLECTION: Magnetic

FOCUS: Hi-Bi-Potential Electrostatic

INTERMEDIATE FREQUENCIES

Picture IF Carrier Frequency: 45.75 MHz

Sound IF Carrier Frequency: 41.25 MHz

Color Sub-Carrier Frequency: 42.17 MHz (Nominal)

AUDIO POWER OUTPUT RATING: 3 W + 3 W (at 10% Distortion)

SPEAKER

Size: 8 cm (3-1")

Voice Coil Impedance: 16 ohm at 400 Hz

VHF/UHF ANTENNA INPUT IMPEDANCE: 75 ohm unbalanced

TUNING RANGES

VHF-Channels: 2 thru 13

UHF -Channels: 14 thru 69

CATV Channels: 1,14 thru 125 (EIA, Channel Plan)

27DV-S100 27DV-CS10

VCR SECTION

Video Recording System: Rotary Two-Head Helical Scanning

Number of Video Heads: 4 pcs.

Video Signal Standard: NTSC Color System

Maximum Recording Time: (SP)120 min (with T-120)

DVD SECTION

Playback-compatible discs: DVD (regional code "1"/"ALL"), Video CD (NTSC),

Operating Temperature: 5°C to 40°C (41°F to 104°F)

Storage Temperature: -20°C to 60°C (-4°F to 140°F)

Format: VHS Standard

Tape Width: 12.7mm (1/2inch)

Tape Speed: (SP)33.35mm/sec (1.31 i.p.s)

(LP)16.68mm/sec (0.66 i.p.s) Play back only (EP)11.12 mm/sec (0.44 i.p.s)

(EP)360 min (with T-120) Video Input: 0.5 to 2.0 Vp-p, 75 ohm unbalanced Audio Input: -8 dB, 47k ohm unbalanced (0 dB-0.775 Vrms)

CD, DA, MP3, Music CD

Signal system: NTSC

Specifications are subject to change without prior notice.

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27DV-S100 27DV-CS10

LOCATION OF USER'S CONTROL

Front (TV/VCR controls)

Cassette compartment

POWER button

REC button

ÈREW (rewind) button

VOL + / – (UP/DOWN) buttons

' / " (UP/DOWN) buttons

Front (DVD controls)

VCR mode indicator

|PLAY button

STOP/ EJECT button

TAMPER PROOF indicator

PROGRAM TIMER indicator

REC indicator

POWER/WAKE-UP TIMER indicator

FF (fast forward) button

Sensor area for Remote Control

DVD mode indicator

OPEN-CLOSE button

|È

SKIP/REV (reverse) button

|PLAY button

SKIP/FWD (forward) è

VIDEO / L-AUDIO-R terminals

Ë Insert the headphones (not supplied) into the headphone jack to listen to audio.

button

(Inside the cover)

PHONES (Headphone jack)

STOP button

Disc tray

Page 9

Rear

27DV-S100 27DV-CS10

LOCATION OF USER'S CONTROL (Continued)

Video output terminal

Video input terminal

DVD OPTICAL DIGITAL output terminal

DVD COAXIAL DIGITAL output terminal

Audio input terminals

Audio output terminals

ANT/CABLE terminal (75Ω)

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27DV-S100 27DV-CS10

Remote Control Unit (Cover closed)

LOCATION OF USER'S CONTROL (Continued)

POWER

DVD

SLOW

F.ADV

SKIP (REV)

STILL/PAUSE

REV (reverse)

STOP

REPEAT

MUTE

MTS

CATV

INPUT

DVD

SUBTITLE

ANGLE

SKIP (FWD)

PLAY

FWD (forward)

ZOOM

DVD/TV

DISPLAY

CH '/", TR /

FLASHBACK

Ë Using Your Remote Control With Your unit

After installing the batteries, press TV to switch to the TV mode. (If you can change the channel of the TV by pressing CH '/" or CHANNEL SELECT buttons,you are in TV mode.)

VOL

CHANNEL SELECT buttons

–

Loading the Batteries

Ë Before using the unit, prepare the Remote Control.

To use the Remote Control, insert batteries first.

Insert the batteries

Battery

Pull up

• With your thumbnail, pull up the slit as indicated by the arrow to remove the back cover. Insert two batteries (size “AA”). Be sure to match the battery

Cover

–

±/— terminals with the ±/— marks inside the compartment.

–

Page 11

LOCATION OF USER'S CONTROL (Continued)

Remote Control Unit (Cover open)

27DV-S100 27DV-CS10

DVD

RETURN

CURSOR

DVD

NUMBER buttons

MEMORY

VCR

CONFIRM

PAUSE/STILL

T.PROOF

REW (rewind)

AUDIO

SET UP

SET

TITLE

CLEAR

PROG.

ON/OFF

PLAY

STOP

DVD

SUBTITLE ANGLE

DVD

DISC MENU

VIRTUAL PROGRAM DIRECT

GAMMA

S.PICTURE

VCR

COUNTER RESET SLOW REC (record) TAPE SPEED FF (fast forward)

DPSS

Page 12

27DV-S100 27DV-CS10

DISASSEMBLY AND REASSEMBLY

1. Remove the 16 rear cover fixing screws and detach the rear cover.

2. Take out the anode cap, CRT PWB, connectors OO, K and M, coating earth, speaker connectors SE, connector DC and others.

3. Remove the 2 main chassis fixing screws and take out the main chassis.

4. Remove the 5 fixing screws from the sub-chassis f or the VCR power/deflection PWB and detach this sub-chassis.

5. Remove the 5 VCR shielding case fixing screws and detach the shielding case.

6. Remove the 4 cassette housing fixing screws and detach the cassette housing.

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27DV-S100 27DV-CS10

7. Remove the 2 mechanism chassis bracket fixing screws and the head amplifier shielding case fixing screw.

8. Remove the 3 mechanism chassis fixing screws and detach the mechanism chassis from the main PWB.

9. Remove the 2 DVD mechanism unit reinforcement fixing screws and detach this reinforcement.

10.Remove the 4 DVD mechanism unit fixing screws and detach the DVD mechanism unit.

11.Remove the 1 main PWB fixing screws and detach the main PWB.

12.Remove the 1 TV signal PWB fixing screw and detach the TV signal PWB.

13.Remove the 2 TV power PWB fixing screws and detach the TV power PWB.

» DVD section

14.Remove the 5 DVD shielding case fixing screws and detach the DVD shielding case.

15.Undo the 4 hooks from the chassis for the DVD main and sub PWBs, and detach this chassis.

16.Remove the 4 DVD main PWB fixing screws and detach the DVD main PWB.

17.Remove the DVD sub PWB fixing scre w , undo the hook and detach the DVD sub PWB.

18.Finally remove the 4 DVD mechanism fixing screws and detach the DVD mechanism.

14 14

Page 14

27DV-S100 27DV-CS10

REPLACEMENT OF MAIN PARTS <Take out disk>

1. Remove the mechanism with angle from the set (refer to 17 on PARTS LIST (See page 183)).

2. It is in such cases as the thin driver, and it is pushed in slowly, and a tra y is dra wn in the arrow direction the slide rack on the left of the base chassis.

3. Take out disk.

Front Side

1. After setting the mechanism chassis to the angle state, ground it to prevent the electrostatic discharge damage of the pickup.

2. Remove the DVD shield (lower) 5 (refer to the illustration on PARTS LIST (See page 183)).

3. Remove the DVD main PWB unit 35 , and loosen the 4 screws 56 to remove the DVD main PWB unit 35 . (Pickup relay FFC isn’t removed.) (refer to the illustration on PARTS LIST (See page 183))

4. Remove screws fixing the base chassis (located at the back right and at front left when facing the set).

5. With the pickup FFC connected, turn over the base chassis and short (solder) two short lands on the pickup interface PWB in order to prevent the electrostatic discharge damage of the pickup.

6. Remove the pickup FFC from the main PWB.

7. Remove the pickup FFC from the pickup interface PWB.

8. Remove the traverse mounting screws to remove the traverse chassis ass’y.

Note: After assembly and wiring, remove the solder joint of the short land. If short-circuited, a disk is not played

back.

Pickup FFC

Sled Motor Lead Wire

Loading Motor Lead Wire

Since the pickup optical axis and turntable inclination of DVD are adjusted with higher accuracy than of CD/MD, make a replacement as a mechanism service chassis ass’y (refer to Parts List).

Traverse Fixing Screw

Pickup FFC

Pickup interface PWB

Short Land

Page 15

27DV-S100

27DV-CS10

For servicing the TV’s component units, undo the lead dressing holders and place the main chassis upright as shown below. Connect necessary leads for quick servicing.

FRONT

DE ZA

GBN

N(H)

Remove the four screws from the cathode ray tube, and detach the cathode ray tube (weighing 35 kg or so). » The cathode ray tube has a high-tension static charge and a

high vacuum. Handle it with enough care on the following occasions.

For disposal of the cathode ray tube

1) The high-voltage electrode, which is covered with the anode cap atop the cathode ray tube, may have a high-tension static charge. Before detaching the anode cap, be sure to get this electrode fully discharged.

2) The cathode ray tube has a high vacuum inside. Crack the tip of the air vent on the neck socket of the cathode ray tube in order to get the tube out of vacuum.

Get the air vent tip cracked to let in air.

Page 16

27DV-S100 27DV-CS10

INSTALLATION AND SERVICE INSTRUCTIONS

Note: (1) When performing any adjustments to resistor controls and transformers use non-metallic scre wdriver

or TV alignment tools.

(2) Before performing adjustment, TV set must be on at least 15 minutes.

CIRCUIT PROTECTION

The receiver is protected by a 6.3A fuse (F701), mounted on PWB-A, wired into one side of the AC line input.

X-RADIATION PROTECTOR CIRCUIT TEST

After service has been performed on the horizontal deflection system, high voltage system, or +B system, test the X-Radiation protector circuit to ascertain proper operation as follows:

1. Apply 120V AC using a variac transformer for accurate input voltage.

2. Allow for warm up and using the remote controller, set the brightness level and contrast level to maximum.

3. Check the voltage of test point TP653. (It’s voltage should be about 11.1V DC.)

4. Apply external 14.5V DC at TP653 by using an external DC supply . The increased v oltage will cause the horizontal oscillator to stop and the TV to shut off.

5. To re-star t the oscillator, remove the external DC power supply and short together TP651 and TP652. Once the TV set operates normally again, remove the short between TP651 and TP652.

HIGH V OL T AGE CHECK

High voltage is not adjustable b ut must be checked to verify that the receiver is operating within safe and efficient design limitations as specified checks should be as follows:

1. Connect an accurate high voltage meter between ground and anode of Picture tube.

2. Operate receiver for at least 15 minutes at 120V AC line voltage, with strong air signal or properly tuned in test signal.

3. Set to Ser vice mode on, “Mute” and bus data 1(Ymute on).

4. The voltage should be approximately 29.2kV (at zero beam). If a correct reading cannot be obtained, chec k circuitry for malfunctioning components. After the voltage test, “Mute” and b us data “0” (Y-mute off).

Page 17

27DV-S100 27DV-CS10

The R-series SHARP TV/VCR COMBINATION have most of the analog setup adjustments eliminated. Coil and variable resistor adjustments are now performed digitally by using the remote controller or set’s volume and channel change function buttons. Note: There are still a few analog adjustments in the R-series such as 120V adjust, focus, master screen

voltage and coils in the picture I/F detector circuit. Follow the steps below , whenever service adjustment is required. See “T ab le-B” to determine, if service adjustments are required.

1. Service mode

Before putting unit into the service mode, check that customer adjustments are in the normal mode, use the reset function in the video adjust menu to ensure customer controls are in their proper (reset) position.

To enter the service mode

Plug in a television set, during push S2507 (CH-up). When successfuly entered, the service mode will be displayed as shown in Figure A.

To exit service mode

Turn off the power or unplug the set.

2. Adjustment Item selection

Once in the service mode, press the channel up or channel down button on the remote controller or at the set (Table-A). Select the item y ou wish to adjust.

3. Data number selection

Press the volume up or down button to adjust the data number in the upper right hand side of the screen.

Figure A.

Page 18

27DV-S100 27DV-CS10

ITEM

SUB COTRAST(*1) PICTURE 20 00 - 31 Adjustment is required of each set. TINT (*1) TINT 30 00 - 47 Adjustment is required of each set. SUB COLOR (*1) COLOR 18 00 - 31 Adjustment is required of each set. BRIGHTNESS (*1) BRIGHT 55 00 - 95 Adjustment is required of each set. SHARPNESS SHARP 15 00 - 47 Fix at "8" V-POSITION (*1) V POSITION 95 00-127 Adjustment is required of each set. H-POSITION (*1) H POSITION 17 00 - 31 Adjustment is required of each set. R CUT-OFF (*1) R CUT-OFF 64 00-255 Adjustment is required of each set. G CUT-OFF (*1) G CUT-OFF 64 00-255 Adjustment is required of each set. B CUT-OFF (*1) B CUT-OFF 64 00-255 Adjustment is required of each set. G GAIN (*1) G GAIN 64 00-127 Adjustment is required of each set. B GAIN (*1) B GAIN 64 00-127 Adjustment is required of each set. Y-γ CURVE Y-γ CURVE 00 00 - 03 Fix at "03" VSM PHASE VSM PHASE 01 00 - 03 Fix at "02" APACON PEAK f0 APA PEAK f0 01 00 - 07 Fix at "01" DC RESTRATION RATE DC REST 21 00 - 63 Fix at "07" DC RESTRATION LIMIT DC REST LMT 00 00 - 03 Fix at "02" BLACK STRETCH POINT BLK STRETCH 03 00 - 07 Fix at "00" APL VS BPS APL VS BPS 01 00 - 03 Fix at "01" B.L.C B.L.C 01 00 - 01 Fix at "00" DYNAMIC ABL POINT DY ABL POINT 04 00 - 07 Fix at "06" DYNAMIC ABL GAIN DY ABL GAIN 04 00 - 07 Fix at "03" ABL POINT ABL POINT 03 00 - 07 Fix at "07" ABL GAIN ABL GAIN 03 00 - 07 Fix at "04" Y-DL Y-DL 01 00 - 01 Fix at "01" TOF-Q TOF-Q 04 00 - 07 Fix at "04" VSM GAIN VSM GAIN 01 00 - 03 Fix at "02" OSD SL OSD SL 00 00 - 01 Fix at "00" C-DECODE C-DECODE 161 00-255 Fix at "153" DVD BR-OFF DVD BR-OFF 30 30 - 70 Fix at "50" PICTURE HEIGHT V AMP 22 00-127 Adjustment is required of each set. V-LINEARITY V-LINEARITY 22 00 - 31 Adjustment is required of each set. V-S CORRECTION V-S CORRECT 40 00 - 63 Fix at "47" PICTURE WIDTH H AMP 30 00 - 63 Adjustment is required of each set. E-W PARABOLA E-W PARABOLA 19 00 - 63 Adjustment is required of each set. E-W CORNER E-W CORNER 18 00 - 31 Adjustment is required of each set. TRAPEZIUM TRAPEZIUM 55 00-127 Adjustment is required of each set. AGC AGC 01 00 - 01 Fix at "01" Y-MUTE MUTE 00 00 - 02 00=NORMAL, 01=NO-Y, 02=NO-VERTICAL ENERGY SAVE ENERGY SAVE 21 00 - 63 Fix at "21" TEXT BOX TEXT BOX 8 00 - 31 Adjustment is required of each set. TEXT PICTURE TEXT PICTURE 20 00 - 80 Fix at "20" CCD LEVEL CCD LEVEL 04 00 - 20 Fix at "10" OPTION (VCR) OPTION (VCR) 39 00-255 Fix at "39" OPTION (TV) OPTION (TV) 31 00-127 Fix at "127" MTS INPUT LEVEL INPUT LEVEL 07 00 - 15 Adjustment is required of each set. MTS VCO MTS VCO 37 00 - 63 Adjustment is required of each set. MTS FILTER FILTER 30 00 - 63 Adjustment is required of each set. WIDE BAND DETECT WIDE BAND 35 00 - 63 Adjustment is required of each set. SPECTRAL DETECT SPECTRAL 22 00 - 63 Adjustment is required of each set. H COMP H COMP 03 00 - 07 Fix at "03" V COMP V COMP 03 00 - 07 Fix at "03" CCD POSITION CCD POSITION 38 00 - 63 Fix at "38"

OSD DISPLAY INITIAL

RANGE SETTING DATA

(*1) Set the adjustment value to tuner input instead of the adjustment at DVD input (play).

Table-A

PART ADJUSTMENT REPLACED NECESSARY UNNECESSARY IC2001 X Data is stored in IC2003.

IC401 X

IC2003 X CRT X Adjust items related to picture tube only.

The adjustment is needed to compensate for characteristics of parts including IC401. Initial setting values are written from IC2001. Adjust for best results.

NOTE

Table-B

Page 19

SERVICE ADJUSTMENT

Screen Adjustment

1. Select a good local channel.

2. Enter the service mode and select the service adjustment item "COLOR" and set the data value to "0" to set the color level to minimum. You may skip this step, if you selected a B/W picture or monoscope pattern.

3. Select service adjustment item "MUTE" and adjust the data value to "1", this turns off the luminance signal (Y-mute).

4. Adjust the master screen control until raster darkens to the point where raster is barely seen.

5. Adjust service adjustments item "R-CUT OFF" red "G-CUT OFF" green and "B-CUT OFF" blue to obtain a good grey scale with normal whites at low brightness level.

6. Select the service adjustment item "MUTE" and reset data to "0". Select service adjustment item "COLOR" and reset data to obtain normal color level.

White Balance Adjustment

1. Select a good local channel.

2. Enter the service mode and select the service adjustment item "COLOR" and set to "0" (minimum color). "COLOR" does not have to be adjusted if you selected a B/W picture or monoscope pattern.

3. Alternately adjust the service adjustment data of "G GAIN" and "B GAIN" until a good grey scale with normal whites is obtained.

4. Select the ser vice adjustment item "COLOR" and adjust data to obtain normal color level.

Picture Adjustment

1. Select a good local channel.

2. Make sure the customer picture control is maximum.

3. Enter the service mode and select the service adjustment item "PICTURE".

4. Adjust the data value to achieve normal contrast range.

Tint Adjustment

1. Select a good local channel.

2. Set customer tint control to center of it’s range.

3. Enter the service mode and select the service adjustment item "TINT".

4. Adjust "TINT" data value to obtain normal flesh tones.

Color Adjustment

1. Select a good local channel.

2. Make sure the customer color control is set to center position .

3. Enter the service mode and select the service adjustment item "COLOR".

4. Adjust "COLOR" data value to obtain normal color level.

27DV-S100 27DV-CS10

Brightness Adjustment

1. Select a good local channel.

2. Make sure the customer brightness control is set to center position.

3. Enter the service mode and select the service adjustment item "BRIGHT".

4. Adjust "BRIGHT" data value to obtain normal brightness level.

Vertical Phase Adjustment

1. Receive a good local channel.

2. Enter the service mode and select "V-POSITION".

3. Adjust data value so that picture is approximate center.

Vertical-Size Adjustment

1. Receive a good local channel.

2. Enter the service mode and select "V-AMP".

3. While observing the top and bottom of the screen, adjust the data value to proper vertical size.

Side Pincushion Adjustment

1. Receive a good local channel or crosshatch pattern signal.

2. Set to standard setting mode.

3. Enter the service mode and select "E-W P ARABOLA".

4. Adjust the data so that the outer most line on the screen be straight.

Corner Distortion Adjustment

1. Receive a good local channel or crosshatch pattern signal.

2. Set to standard setting mode.

3. Enter the service mode and select "E-W CORNER".

4. Adjust the data so that the vertical lines should be straight.

Trapezoidal Distortion Adjustment

1. Receive a good local channel or crosshatch pattern signal.

2. Set to standard setting mode.

3. Enter the service mode and select "TRAPEZIUM".

4. Adjust the data so that the leftmost and rightmost vertical lines are parallel to each other.

Horizontal Position Adjustment

1. Receive a good local channel or crosshatch pattern signal.

2. Set to standard setting mode.

3. Enter the service mode and select "H-POSITION".

4. Adjust so that the left and right overscans are equal to each other.

Page 20

27DV-S100 27DV-CS10

Horizontal Size Adjustment

1. Receive a good local channel or crosshatch pattern signal.

2. Set to standard setting mode.

3. Enter the service mode and select "H-AMP".

4. Adjust the data to obtain the best horizontal size.

Caption Position Adjustment (Horizontal)

1. Receive a good local channel.

2. Enter the service mode and select "TEXT BOX".

3. A black text box appears on the screen. (see Figure B below)

4. Adjust the data value so that text box is positioned in the center of the screen.

White Balance Adjustment of Component Signal Input

1. Feed the B/W pattern signal via the component signal input from signal generator.

2. Set "Y-MUTE" bus data to "01" to get the Y signal mute.

3. Select a luminance-short gun, and adjust the bus data of "R CUT-OFF", "G CUT-OFF" and "B CUT-OFF" to have the luminance at the white level.

4. Adjust the "G GAIN" and "B GAIN" setting to obtain the specified white level.

Sub-brightness Adjustment of Component Signal Input

1. Feed the B/W pattern signal via the component signal input from signal generator.

2. Make sure the customer brightness control is set to center position.

3. Enter the service mode and select "BRIGHT".

4. Adjust the data value to obtain normal br ightness level.

Page 21

MTS ADJUSTMENT

MTS Level Adjustment (for TV tuner)

1. Receive the following monaural signal. Monaural signal: 300Hz, 245mVrms.

2. Connect the rms voltmeter to pin (39) of IC3001.

3. Enter the service mode and select "INPUT LEVEL".

4. Adjust the data so that the rms voltmeter reads 490 +10/-10mVrms.

MTS VCO Adjustment (for TV tuner)

1. Keep the unit in no-signal state.

2. Connect the frequency counter to pin (39) of IC3001.

3. Connect a capacitor (100uF, 50V) between positive (+) side of C3005 and ground.

4. Enter the service mode and select "MTS VCO".

5. Adjust the data so that the frequency counter reads

62.94 +0.72/-0.75kHz.

Filter Adjustment (for TV tuner)

1. Feed the following stereo pilot signal to pin (14) of IC3001. Stereo pilot signal: 9.4kHz, 600mVrms.

2. Enter the service mode and select "FILTER".

3. Adjust the data until "OK" appears in position on the screen. Make sure the "OK" is displayed almost at the center of the data range.

27DV-S100 27DV-CS10

Separation Adjustment (for VCR tuner)

1. Connect the rms voltmeter to pin (22) of IC3601 (or negative (-) side of C1321).

2. Receive the following composite stereo signal 1. Composite stereo signal: 30% modulation, left channel only, noise reduction on, 300Hz.

3. Adjust R3601 to become the output level as the minimum.

4. Receive the following composite stereo signal 2. Stereo signal: 30% modulation, left channel only , noise reduction on, 3kHz.

5. Adjust R3612 to become the output level as the minimum.

6. Take the above steps 1 thru 5 again for fine adjustment.

Separation Adjustment (for TV tuner)

1. Connect the rms voltmeter to pin (39) of IC3001.

2. Receive the following composite stereo signal 1. Composite stereo signal: 30% modulation, left channel only, noise reduction on, 300Hz.

3. Enter the service mode and select "WIDE BAND".

4. Adjust the data until the AC voltage reading of the rms voltmeter is minimum.

5. Receive the following composite stereo signal 2. Stereo signal: 30% modulation, left channel ony, noise reduction on, 3kHz.

6. Enter the service mode and select "SPECTRAL".

7. Adjust the data until the AC voltage reading of the rms voltmeter is minimum.

8. Take the above steps 1 thru 7 again for fine adjustment.

MTS Level Adjustment (for VCR tuner)

1. Receive the following monaural signal. Monaural signal: 300Hz, 245mVrms.

2. Connect the rms voltmeter to pin (22) of IC3601 (or negative (-) side of C1321).

3. Adjust R3614 to become the output level as 490 +10/-10mVrms.

Page 22

27DV-S100 27DV-CS10

PRECAUTIONS IN REASSEMBLING

INSTALLING THE CASSETTE HOUSING

When the cassette housing is installed on the mechanism, the initial setting is essential condition. There are two initial setting methods, namely electrical and mechanical.

1. Electrical initial setting

So as to perform initial setting of mechanism execute the Step 1 of Installation of cassette housing. After ascertaining the retur n to the initial setting position (*1) install the cassette housing. (Conditions: When mechanism and PWB have been installed)

Pulley feed gear

Screwdriver

Tint mark (*1)

Installing the mechanism on PWB

Lower vertically the mechanism, paying attention to the mechanism edge, and install the mechanism with due care so that the parts are not damaged. So as to fix the mechanism to the main PWB install two housings. (Fit the antenna cover to one of them. For other, fix the vicinity of loading motor and solder joint side of main PWB.) Connect again the FFC cable (AA-MH, AD-ME, AH-MZ) between the mechanism and the main PWB.

2. Mechanical initial setting

Feed the pulley f eed gear of loading motor with screw driver. After ascertaining the return to the initial set position (*1) install the cassette housing in the specified position. (This method is applied only for the mechanism.)

Casecon drive gear

Drive angle of cassette housing

Parts which need particular care

When installing the mechanism chassis on the PWB unit, take care so as to prevent deformation due to contact of mechanism chassis with REC TIP SW.

END SENSOR

REC TIP SW

AE CONNECTOR

AD CONNECTOR

START SENSOR

AL CONNECTOR

Page 23

FUNCTION OF MAJOR MECHANICAL PARTS (TOP VIEW)

1815

27DV-S100 27DV-CS10

No. Function

1 Full erase head 2 Supply pole base ass’y 3 Tension arm ass’y 4 Idler wheel ass’y 5 Pinch drive lever ass’y 6 Supply reel disk 7 Supply main brake ass’y 8 Take-up main brake ass’y

No. Function

11 Reverse guide lever ass’y 12 Casecon drive gear 13 Take-up reel disk 14 Pinch roller lever ass’y 15 Drum ass’y 16 Loading motor 17 Drum motor 18 Take-up pole base ass’y

9 Pinch drive cam

10 A/C Head ass’y

19 Impedance roller ass’y

Page 24

27DV-S100 27DV-CS10

FUNCTION OF MAJOR MECHANICAL PARTS (BOTTOM VIEW)

19 20

No. Function

12 Casecon drive gear 19 Slow brake 20 Master cam 21 Capstan D.D. motor

22 Reel belt 23 Clutch lever 24 Limiter pulley ass'y 26 Shifter

Page 25

27DV-S100 27DV-CS10

ADJUSTMENT, REPLACEMENT AND ASSEMBLY OF MECHANICAL UNITS

The explanation given below relates to the on-site general service (field service) but it does not relates to the adjustment and replacement which need high-grade equipment, jigs and skill. For example, the drum assembling, replacement and adjustment service must be performed by the person who have finished the technical courses.

MECHANISM CONFIRMATION ADJUSTMENT JIG

So as to perform completely the mechanism adjustment prepare the following special jigs. So as to maintain the initial performance of the machine the maintenance and check are necessary. Utmost care must be tak en so that the tape is not damaged. If adjustment needs any jig, be sure to sue the required jig.

This cassette torque meter is used

1. Torque Cassette Meter JiGVHT-063 CZ

JiGTG0090 CM

2. Torque Gauge JiGTG1200 CN

3. Torque Gauge Head JiGTH0006 AW

for checking and adjusting the torque of take-up for measuring tape back tension.

These Jigs are used for checking and adjusting the torque of takeup and supply reel disks.

4. Torque Driver JiGTD1200 CB

Master Plane Jig and JiGRH0002 BR

5. Reel Disk Height

Adjusting Jig JiGMP0001 BY

JiGSG2000 BS

6. Tension Gauge

JiGSG0300 BF

Pinch pressing force

measuring jig

Hex Wrench (1.2mm) JiGHW0012 AE

Hex Wrench (1.5mm) JiGHW015 AE

Reverse guide height

adjusting box driver

JiGTDP003 BK

JiGDRiVER11055

When fixing an y part to the threaded hole using resin with screw , use the jig. (Specified torque 5 kg)

These Jigs are used for checking and adjusting the reel disk height.

There are two gauges used for the tension measurements, 300 g and

2.o kg.

This Jig is used with the tension gauge. Rotary transformer clearance adjusting jig.

This Jigs are used for loosening or tightening special hexagon type screws.

This Jig is used for height adjustment of the reverse guide (for reverse guide height adjustment).

Page 26

27DV-S100 27DV-CS10

No. Jig Item Part No. Code Configuration Remarks

These tapes are especially used for electrical fine adjustment.

10. Alignment T ape

Guide roller height

11. adjustment drive

X value adjustment

12. gear type screw driver

Reverse Guide Height

13. Adjusting

VROATSV CD

VROEBZCS

JiGDRiVERH-4 AP

JiGDRiVER-6

JiGRVGH-F18

Video Audio Hi-Fi Audio Track 525 Monoscope 7k — 58µm NTSC Color Bar 1k — 58µm

525 Monoscope 1k — 19µm

This screwdriver is used for adjusting the guide roller height.

For X value adjustment.

This Jig is used for height adjustment of the reverse guide.

Page 27

MAINTENANCE CHECK ITEMS AND EXECUTION TIME

NOTE : Part replacement. : Cleaning : Apply grease <Specified> Cleaning liquid Industrial ethyl alcohol

Maintained

Parts

Remarks

Ref.No.

500 hrs.

1000 hrs.

1500 hrs.

2000 hrs.

Possible symptom

encountered

Guide roller ass’y Sup guide shaft Reverse guide Slant pole on pole base Full erase head A/C head

Upper and lower drum ass’y

Capstan D.D. motor Pinch roller

Reel belt

Tension band ass’y Loading motor

Idler ass’y Limiter pulley Supply/take-up main brake levers

AHC

(Automatic Head Cleaner)

—

7,8

58 59

61 12

60 46 48

24,25

Colour and beating Small sound or sound

distortion

No tape running, uneven colour

No tape running, tape slack

No tape running, tape slack, no fast forward/ rewind motion

Lateral noises Head occasionally blocked

Abnormal rotation or significant vibration requires replacement.

Clean tape contact part with the specified cleaning liquid.

Clean tape contact area with the specified cleaning liquid.

Replace the roller of the cleaner when it wears down. Just change the AHC roller assembly for new one.

Screen swaying Cassette not loaded or

unloaded No tape running, tape

slack

Tape slack

Clean rubber and rubber contact area with the specified cleaning liquid.

Poor S/N ratio, no colour Poor flatness of the envelope with alignment tape

* This mechanism does not need electric adjustment with variable resistor. Check parts. If any deviation is found,

clean or replace parts.

Perform the maintenance with the regular intervals as follows so as to maintain the quality of machine.

27DV-S100 27DV-CS10

Video head cleaning procedure

1. Apply one drop of cleaning liquid to the cleaning paper with the baby oiler.

2. Gently press the cleaning paper against the video head to fix your finger, and move the upper drum so that each head is passed to and for 5 times (do not move the cleaning paper).

3. Wipe with the dry cleaning paper.

Notes :

• Use the commercially available ethanol of Class 1 as

cleaning liquid.

• Since the video head may be damaged, do not move

up and down the cleaning paper.

• Whenever the video head is cleaned, replace the

cleaning paper.

• Do not apply this procedure for the parts other than

the video head.

Gently press the cleaning paper to fix with your finger, and rotate the upper drum to clean. Move to and for 5 times for each head. (Do not move the cleaning paper.)

ZPAPRA56-001E Cleaning Paper ZOiLR-02-24TE Babe Oiler (Spoit)

Rotate the upper drum with one hand.

Parts Code Description

Page 28

27DV-S100

500g

Mechanism chassis

Weight to prevent float (500g)

27DV-CS10

REMOVING AND INSTALLING THE CASSETTE HOUSING

• Removal

1. In the cassette removing mode, remove the cassette.

2. Unplug the power cord.

3. Remove in the following numerical order. a) Remove two screws 1. b) Slide and pull up the cassette housing control.

Figure 1-1.

Notes:

1. When fitting the S/E sensor holder to the cassette controller frame L/R, take care.

2. Misengagement of teeth of casecon drive gear and drive angle gear causes malfunction. (The cassette cannot be set, load and ejection are repeated).

3. In the case when you use the magnet screw driver, never approach the magnet driver to the A/C head, FE head, and drum.

4. When installing or removing, take care so that the cassette housing control and tool do not contact the guide pin or drum.

5. After installing the cassette housing control once perform cassette loading operation.

TO RUN A TAPE WITHOUT THE CASSETTE HOUSING CONTROL ASSEMBLY

1. Remove the full-surface panel.

2. Short-circuit R7057 and JUMPER:420.

3. Plug in the power cord.

4. Turn off the power switch.

(The mechanism moves to the cassette mounting position.)

5. Open the lid of a cassette tape by hand.

6. Hold the lid with two pieces of vinyl tape.

7. Set the cassette tape in the mechanism chassis.

8. Stabilize the cassette tape with a weight (500g) to

prevent floating.

9. Turn on the power switch.

10. Perform running test.

11. After running test, once turn off the power to let the

mechanism move to the cassette mounting position, then remove the cassette.

• Reassembly

1. Before installing the cassette housing control, shortcircuit R7057 and JUMPER:420 provided on the main PWB, prug in the power cord, and then press the STOP/EJECT button. The casecon drive gear turns and stops when the positioning mark appears. Engage two teeth of casecon drive gear with the three teeth of casecon drive angle gear, and set on the mechanism chassis as shown below.

Casecon drive gear

Casecon drive angle gear

Figure 1-2.

2. Install in the reverse order of removal.

Figure 1-3.

Note:

The weight should not be more than 500g. To take out the cassette tape.

1. Turn off the power switch.

2. Take out the cassette tape.

Page 29

27DV-S100 27DV-CS10

REEL DISK REPLACEMENT AND HEIGHT CHECK

• Removal

1. Remove the cassette housing control assembly.

2. Pull the tension band out of the tension arm ass'y.

3. Remove the Supply/Take-up main brake ass'y.

4. Open the hook at the top of the reel disk, and remove the reel disk.

Note:

Take care so that the tension band ass'y and main brake ass'y (especially soft brake) are not deformed.

Tension arm ass'y

Supply main brake ass'y

Tension band ass'y

Supply reel disk

Take-up main brake ass'y

Take-up reel disk

3. After checking the reel disk height, wind the tension band ass'y around the reel disk, and insert into the hole of tension arm ass'y.

4. Assemble the Supply main brake ass'y.

Notes:

1. When installing the reel disk, take due care so that the tension band ass'y is not deformed and grease does no adhere.

2. Do not damage the Supply main brake ass'y. Be careful so that grease does not adhere to the brake surface.

• Reassembly (Take-up reel disk)

1. Clean the reel disk shaft and apply grease (SC-141) to it.

2. Align the phase of the reel disk to that of the reel relay gear and to install a new take-up reel disk onto the shaft.

3. Check the reel disk height and reassemble the take-up main brake ass'y.

Note:

1. Take care so that the Take-up main brake ass'y is not damaged. Take care so that grease does not adhere the brake surface.

2. After reassembly, check the video search rewind back tension (see page 32), and check the brake torque (see page 34).

Figure 1-4.

Note:

When the tension band ass'y is pressed in the direction of the arrow for removal, the catch is hard to be deformed.

Figure 1-5.

• Height checking and adjustment Note:

1. Set the master plane with due care so that it does not contact the drum.

2. When putting the master plane, shift the reverse guide a little in the loading direction. Care must be taken since excessive shift results in damage.

Master plane

Reverse guide

Supply reel disk

Cassette lock release shaft

Take-up reel disk

Position pin

Figure 1-6.

• Reassembly (Supply reel disk)

1. Clean the reel disk shaft and apply grease (SC-141) to it.

2. Match the phases of reel disk and reel relay gear, and set the new reel disk.

Note:

Check that the reel disk is lower than part A but higher than part B. If the height is not correct, readjust the reel disk height by changing the poly-slider washer under the reel disk.

• Problems caused by maladjustments

1. Tapes may get scratched.

Page 30

27DV-S100 27DV-CS10

Note:

Whenever replacing the reel disk, perform the height checking and adjustment.

Master plane

10 ± 0.2mm

Reel disk

Reel disk height adjusting jig

Mechanism chassis

Figure 1-7.

CHECKING AND ADJUSTMENT OF TAKEUP TORQUE IN FAST FORWARD MODE

• Remove the cassette housing control assembly.

• After short-circuiting R7057 and JUMPER:420 provided on the main PWB, plug in the power cord, then turn on the power.

• Setting

1. Set a torque gauge to zero on the scale. Place it on the take-up reel disk.

2. Press the FF button.

3. To calculate the remaining capacity of the play back mode, slowly rotate the supply reel disk, and then shift it into the forward mode.

• Checking

1. Turn the torque gauge slowly (one rotation every 2 to 3 seconds) by hand in the CW direction.

2. Make sure that the indication of torque gauge is not less than 30mN·m (306gf·cm).

Torque gauge

Notes:

1. Hold the torque gauge by hand so that it is not moved.

2. Do not keep the reel disk in lock state. Do not allow long-time measurement.

5. CHECKING AND ADJUSTMENT OF

TAKE-UP TORQUE IN REWIND MODE

• Remove the cassette housing control assembly.

• After short-circuiting R7057 and JUMPER:420 provided on the main PWB, plug in the power cord, then turn on the power.

• Setting

1. Set a torque gauge to zero on the scale. Place it on the supply reel disk.

2. Press the rewind button.

3. To calculate the remaining capacity, slowly rotate the take-up reel disk, and then shift it into the rewind mode.

• Checking

1. Turn the torque gauge slowly (one rotation every 2 to 3 seconds) by hand in the CCW direction.

2. Make sure that the indication of torque gauge is not less than 30mN·m (306gf·cm).

Torque gauge

30mN·m (306gf·cm) or more

CCW

The gauge is held at its maximum value. (Red mark)

30mN·m (306gf·cm) or more

Idler ass'y

Figure 1-8.

The gauge is held at its maximum value. (Red mark)

• Adjustment

1. If the FF winding-up torque is less than the specified value, clean the capstan D.D. motor pulley, drive belt, and limiter pulley with cleaning liquid, and check again.

2. If the torque is less than the set value, replace the reel belt.

• Problems caused by maladjustments

1. Tapes may fail to be wound up near the FF end.

Supply reel disk

Idler ass'y

Figure 1-9.

• Adjustment

1. If the rewind winding-up torque is less than the specified value, clean the capstan D.D. motor pulley, drive belt, and limiter pulley with cleaning liquid, rewind again, and check the winding-up torque.

2. If the winding-up torque is still out of range, replace the drive belt.

• Problems caused by maladjustments

1. Tapes may fail to be wound up near the REW end.

Page 31

27DV-S100 27DV-CS10

Notes:

1. Hold the torque gauge by hand so that it is not moved.

2. Do not keep the reel disk in lock state. Do not allow long-time measurement.

CHECKING AND ADJUSTMENT OF TAKEUP TORQUE IN RECORD/PLAYBACK MODE

• Remove the cassette housing control assembly.

• After short-circuiting R7057 and JUMPER:420 provided on the main PWB, plug in the power cord.

• Turn off the power switch. (The mechanism moves to the cassette mounting position.)

• Open the cassette torque meter lid, and fix it with tape.

• Load the cassette torque meter into the unit.

• Put the weight (500g) on the cassette torque meter.

• Turn on the power switch.

• Press the picture record button, and set EP picture record mode (x3).

Set value EP6.9 ± 2.5mN·m (70 ± 25gf·cm)

CHECKING AND ADJUSTMENT OF TAKEUP TORQUE IN VIDEO SEARCH REWIND MODE

• Remove the cassette housing control assembly.

• After short-circuiting R7057 and JUMPER:420 provided on the main PWB, plug in the power cord, then turn on the power.

• Setting

Press the playback button and rewind button to set the video search rewinding mode.

• Checking

Place the torque gauge on the supply reel disk, and turn it counterclockwise very slowly (one rotation every 1 to 2 seconds) and check that the torque is within the set value

14.0 ± 3.9mN⋅m. (144 ± 40gf⋅cm)

Torque gauge

CCW

500g

Cassette torque meter

Figure 1-10.

• Checking

1. Make sure that value is within the setting 6.9 ± 2.5mN·m (70 ± 25gf·cm).

2. The winding-up torque fluctuates due to variation of rotation torque of limiter pulley ass'y. Read the center value of fluctuation as setting.

3. Set the EP record mode (x3) and make sure that the winding-up torque is within setting.

• Adjustment

If the playback winding-up torque is not within the setting, replace the limiter pulley assembly.

Note:

When the torque cassette is set, put a weight (500g) to prevent rise. When the cassette torque meter is taken out. Turn off the power switch.

• Problems caused by maladjustments

1. Much maladjusted : Tapes may get scratched.

2. Slightly maladjusted : Tapes may get slack halfway,

resulting in the STOP mode.

: Tapes may get entangled.

Supply reel disk

Figure 1-11.

Note:

Surely put the torque gauge on the reel disk to measure. If the torque gauge is raised, accurate measurement is impossible.

• Adjustment

If the rewinding playback winding-up torque is not within the setting, replace the limiter pulley assembly.

Note:

The winding-up torque fluctuates due to variation of rotation torque of supply reel disk. Read the center value of fluctuation as setting.

• Problems caused by maladjustments

1. Much maladjusted : Tapes may get scratched.

2. Slightly maladjusted : Tapes may get slack halfway, resulting in the STOP mode.

: Images onscreen may get distorted. : Tapes may get entangled. : Tapes may became out from

cassette.

Page 32

27DV-S100 27DV-CS10

CHECKING THE VIDEO SEARCH REWIND BACK TENSION

• Remove the cassette housing control assembly.

• After short-circuiting R7057 and JUMPER:420 provided on the main PWB, plug in the power cord, then turn on the power.

• Checking

1. After pressing the play button, press the rewind button, and set the video search rewind mode.

2. Place the torque gauge on the take-up reel disk, and turn it counterclockwise very slowly (one rotation every 2 to 3 seconds) and check that the torque is within the set value 3.4 ± 1.5mN⋅m (35 ± 15gf⋅cm).

• Problems caused by maladjustments

1. Tapes may get scratched whether much or slightly maladjusted

Torque gauge

CCW

Tension gauge

Pinch roller

Capstan shaft

Tension gauge adapter

900 - 1,200gf

Figure 1-13.

1. Detach the pinch roller from the capstan shaft. Do not separate excessively. Or the pinch lever and pinch double action lever may disengage.

2. Engage the tension gauge adapter with the pinch roller shaft, and pull in the arrow direction.

3. Gradually return the pinch roller, and measure the pulling force when the pinch roller contacts the capstan shaft.

4. Make sure that the measured value is within setting 9.0 N to 11.8 N (900 to 1,200gf).

Take-up reel disk

Figure 1-12.

Note:

Set the torque gauge securely on the take-up reel disk. If it is not secure, the measurement will be incorrect.

CHECKING THE PINCH ROLLER PRESSURE

• Remove the cassette housing control assembly.

• After short-circuiting R7057 and JUMPER:420 provided on the main PWB, plug in the power cord, then turn on the power.

• Checking

Press the play button to set the playback mode.

• Problems caused by maladjustments

1. Much maladjusted : The service life of the capstan

and pinch roller may be shorter.

2. Slightly maladjusted : Images onscreen may get

distorted.

CHECKING AND ADJUSTMENT OF TENSION POLE POSITION

• Remove the cassette housing control assembly.

• After short-circuiting R7057 and JUMPER:420 provided on the main PWB, plug in the power cord, then turn off the power.

• Setting

1. Turn off the power switch.

2. Open the cassette tape (T-120), and fix with tape.

3. Set the cassette tape into the unit.

4. Put the weight (500g) on the cassette tape.

5. Turn on the power switch.

6. Make the adjustment with the beginning of a T-120 tape.

500g

Weight to prevent float (500g)

Figure 1-14.

• Checking

1. Set a cassette tape, push the REC button to place the unit in the SP record mode. Now check the tension pole position.

(T-120)

Page 33

27DV-S100

90°

Tension pole adjuster

500g

Weight to prevent float (500g)

Cassette torque meter

27DV-CS10

2. Visually check to see if the right edge of the tension pole is within the 2.3 ± 0.25 from the right edge of the Sup guide shaft.

Sup guide shaft

Tension pole

2.3 ± 0.25

Make the adjustment with the beginning of a T-120 tape.

Figure 1-15.

At left side from the center line

Tension pole adjuster adjusting range

Figure 1-18.

Adjust so that the delta mark of tension pole adjuster is within 90° range (left, right).

CHECKING AND ADJUSTMENT OF RECORD/PLAYBACK BACK TENSION

• Remove the cassette housing control assembly.

2.3 ± 0.25

Figure 1-16.

Insert the slotted screwdriver in the tension pole adjuster, and rotate counterclockwise.

At right side from the center line

2.3 ± 0.25

Figure 1-17.

Insert the slotted screwdriver in the tension pole adjuster, and rotate clockwise.

• Problems caused by maladjustments

1. Images onscreen may get distorted.

• After short-circuiting R7057 and JUMPER:420 provided on the main PWB, plug in the power cord, then turn off the power.

• Setting

1. Turn off the power switch.

2. Open the torque cassette meter and fix with tape.

3. Set the cassette tape into the unit.

4. Put the weight (500g) on the cassette torque meter.

5. Turn on the power switch.

Figure 1-19.

• Checking

1. Push the REC button to place the unit in the SP record mode.

2. At this time ascertain that the back tension is within the setting (36.5 to 52g·cm) by seeing the indication of torque cassette meter.

Page 34

27DV-S100 27DV-CS10

• Adjustment

1. If the indication of torque cassette meter is lower than the setting, shift the tension spring engagement to the part A.

2. If the indication of torque cassette meter is higher than the setting, shift the tension spring engagement to the part B.

• Problems caused by maladjustments

1. Much maladjusted : Tapes may get scratched.

2. Slightly maladjusted : Images onscreen may get

distorted.

Tension arm

Tension spring

Figure 1-20.

CHECKING THE BRAKE TORQUE

• Checking the brake torque at the supply side

in the CW direction/CCW direction with respect to the supply reel disk so that the reel disk and torque gauge pointer rotate at equal speed, and make sure that the value is within the setting (CW direction: 4.9 to 13.7mN·m (50 to 140gf·cm); CCW direction: 2.9 to 9.8mN·m (30 to 100gf·cm).

• Checking the brake torque at the take-up side

Torque gauge

Take-up reel disk

CCW: 4.9~13.7mN⋅m (50~140gf⋅cm) CW: 3.9~10.8mN⋅m (40~110gf⋅cm)

CCW

Figure 1-22.

• Remove the cassette housing control assembly.

Torque gauge

CCW

CCW: 2.9~9.8mN⋅m (30~100gf⋅cm) CW: 4.9~13.7mN⋅m (50~140gf⋅cm)

Supply reel disk

Figure 1-21.

• Remove the cassette housing control assembly.

• After short-circuiting R7057 and JUMPER:420 provided on the main PWB, plug in the power cord, then turn on the power.

• Setting

1. Set a torque gauge to zero on the scale. Place it on the supply reel disk.

2. Switch from the FF mode to the STOP mode.

3. Disconnect the power cord.

• Checking

Turn the torque gauge at a rate of about one turn/2 sec

• After short-circuiting R7057 and JUMPER:420 provided on the main PWB, plug in the power cord, then turn on the power.

• Setting

1. Switch from the FF mode to the STOP mode.

2. Disconnect the power cord.

3. Set a torque gauge to zero on the scale. Place it on the take-up reel disk.

• Checking

1. Turn the torque gauge at a rate of about one turn/2 sec in the CCW direction/CW direction so that the reel disk and torque gauge pointer rotates at equal speed and make sure that the value is within the setting (CCW direction: 4.9 to 13.7mN·m (50 to 140gf·cm), CW direction: 3.9 to 10.8 mN·m (40 to 110gf·cm).

2. Adjustment of the brake torque at the supply side and the take-up side

• Unless the supply side brake torque or take-up side brake torque is within the setting, clean the felt surface of reel disk (supply, take-up) brake lever, check again the brake torque.

• If value cannot be set within the setting yet, replace the main brake ass'y or main brake spring.

• Problems caused by maladjustments

1. From the FF or REW to the STOP mode

• Much maladjusted :The brake noise may get louder.

• Slightly maladjusted :Tapes may get slack and

scratched.

Page 35

27DV-S100 27DV-CS10

REPLACEMENT OF A/C (Audio/Control) HEAD

1. Remove the cassette housing control assembly.

2. In unloading state unplug the power cord.

• Removal

1. Remove the screws 123, Azimuth screw, Tilt screw.

2. Unsolder the PWB fitted to the A/C head.

Notes:

1. When replacing, never touch the head. If you touched, clean with the cleaning liquid.

2. When removing the screw 3, take care so that the spring may out.

Azimuth screw

Spring

Figure 1-23.

Tilt screw

Height screw

section and A/C head front section) (See the figure be-

low.)

3. Align the left end of gear of A/C head arm with the punched mark of chassis, tentatively tighten the screws 1 and 2 so as to ensure smooth motion of A/C head arm. Tentative tightening torque must be 0.15 to 0.20 N·m (1.5 to 2.0kgf·cm).

Height screw

Left end of A/C head plate gear

Punched line mark on chassis

Figure 1-25.

Notes:

1. If the screws 1 and 2 are tighten tentatively too loose, the azimuth and height of A/C head may change when they are finally tightened. Therefore care must be taken.

2. After completion of A/C head be sure to adjust tape running. (Execute the running adjustment by the method described in page 37.)

• Replacement

1. Solder the removed PWB to the new head assembly.

2. Adjust the height from the A/C head plate (lower surface) to the A/C head base to 10.8mm with slide calipers. (3 places of azimuth screw section, tilt screw

Solder

New A/C head ass'y

A/C head PWB

Never touch the head

A/C head base

10.8mm10.8mm

Figure 1-24.

Page 36

27DV-S100 27DV-CS10

A/C HEAD HEIGHT ROUGH ADJUSTMENT

• Setting

Height screw

Weight to prevent float (500g)

Azimuth screw

Tilt screw

Cassette tape

500g

Mechanism chassis

Figure 1-26.

HEIGHT ADJUSTMENT OF REVERSE GUIDE

1. Adjust the height from the mechanism chassis to the reverse guide lower flange to 13.38 mm, using the reverse guide height adjustment jig, in tape loading state. (Refer to Figure 1-28 (a) (b).)

Reverse guide height

Reverse guide

adjusting jig

(a) (b)

Figure 1-28.

2. Rotate counterclockwise the reverse guide height adjustment nut 1/10 turn. (For height adjustment use the reverse guide height adjustment box driver (JiGDRiVER

11055)).

Reverse guide height adjusting jig

Mechanism chassis

Box driver

13.38mm

1. Set the cassette tape in the unit.

2. Press the PLAY button to put the unit in the playback mode.

3. Roughly adjust the height of the A/C head by turning the height screw until the tape is in the position shown below.

A/C head

Tape

0.3mm

Figure 1-27.

• Adjustment

Adjust the height screw visually so that the control head is visible 0.3mm below the bottom of the tape.

• Problems caused by maladjustments

1. Tapes may get scratched

2. Images onscreen distorted.

CCW

Height adjusting nut

Figure 1-29.

3. Set the tape, and check for tape crease near the reverse guide in the playback mode. If crease is found, turn the reverse guide adjustment nut to remove crease. (As for crease check refer to Figure 1-30.)

500g

Weight to prevent float (500g)

Mechanism chassis

Reverse guide

Capstan motor shaft

Fixing guide

An example of crease near the reverse guide

* Check for crease from the A direction.

Figure 1-30.

• Problems caused by maladjustments

1. Tapes may get scratched.

Page 37

27DV-S100 27DV-CS10

ADJUSTMENT OF TAPE DRIVE TRAIN

1. Tape run rough adjustment

1 Remove the cassette housing control assembly. 2 After shortcircuiting R7057 and JUMPER:420

provided on the main PWB, plug in the power cord. , then turn off the power. Set the tape for each check and / or adjustment shown below and turn on the power.

3 Check and adjust the position of the tension pole.

(See page 33.)

4 Check and adjust the video search rewind back

tension. (See page 32.)

5 Connect the oscilloscope to the test point for PB

CHROMA envelope output (TP3301). Set the synchronism of the oscilloscope to EXT. The PB CHROMA signal is to be triggered by the head switching pulse (TP3302).

6 Set the alignment tape (VROATSV) to play. (Put a

500g weight on the cassette tape to prevent lift of cassette tape.)

Guide roller

Cassette Tape

500g

tion, and adjust the envelop waveform to maximum with X value adjustment nut. Thereby the tape run rough adjustment is facilitated.

2. Especially the outlet side envelope waveform must have higher flatness.

Figure 1-32.

2. Adjustment of A/C head height and azimuth 1 Perform the initial setting of A/C head position by

the method stated in "page 35 Replacement 3".

2 Connect the oscilloscope to the audio output

termina0l (TP6601).

3 Using the alignment tape in which 1 kHz linear

audio signal has been recorded, adjust the height screw so as to get max audio output.

4 Using the alignment tape in which 7 kHz linear

audio signal has been recorded, adjust the azimuth screw so as to get max audio output.

5 The adjustment of 3 and 4 twice or three times

repeat, and finally adjust 4.

Weight of 500g

Figure 1-31.

7 Press the tracking button (+), (–) and change the

envelope waveform from max to min and from min to max. At this time make sure that the envelope waveform changes nearly parallel.

8 Unless the envelope waveform changes nearly

parallel, adjust the height of supply side and takeup side guide roller so that the envelope waveform changes nearly parallel. (For envelop adjustment procedure refer to Figure 1-35.)

9 Turn the tilt screw to remove the tape crease at the

fixing guide flange. Playback the tape and check for tape crease at the fixing guide flange. (1)If there is no tape crease

Turn the tilt screw clockwise so that tape crease appears once at the flange, and then return the tilt screw so that the crease disappears.

(2)If there is tape crease

Turn counterclockwise the tilt screw so that the tape crease disappears. (Reference) If the tilt screw is turned clockwise crease appears at the lower flange.

• Problems caused by maladjustments

1. Totally maladjusted

• Images onscreen may get distorted or affected by noises, or may fail to appear.

Notes:

1. Previously set the tracking control in the center posi-

For X value adjustment Adjust the X value, turning the gear-type screwdriver.

Figure 1-33.

3. Tape run adjustment 1 Connect the oscilloscope to PB CHROMA enve-

lope output test point, set oscilloscope sync to EXT, trigger-input the PB CHROMA signal (head switching pulse).

2 Rough adjustment of X value

Tentatively fix A/C head arm screws 1 and 2 by the method described in page 35 "Replacement 3". After shortcircuiting R7057 and JUMPER:420, plug in the powercord, then turn off the power. And set the alignment tape (VROATSV) into the unit, turn on the power, then playback it. As a result the autotracking is automatically cancelled, so that the X value adjustment mode is set. Move the A/C head with the X value adjustment gear driver (JiGDRiVER-6) by the method shown in Figure 1-33, and adjust the A/C head so as to get the maximum envelope waveform. (Note: When the A/C head is adjusted, adjust so that the maximum envelop waveform is obtained nearest the position of initial setting made in page 35.)

Page 38

27DV-S100 27DV-CS10

3 Next, change the alignment top to VROEFZCS to

play back. Press the tracking button (+), (–) and change the envelope waveform from max to min and from min to max. At this time adjust the height of supply and take-up side guide roller with the adjustment driver (JiGDRiVERH-4) so that the envelope waveform changes nearly parallel.

4 If the tape is lifted or sunk from the helical lead

surface, the PB CHROMA envelope waveform appears as shown in Figure 1-35.

5 Press the tracking button (+), (–) and make sure

that the envelope waveform changes nearly parallel.

6 Finally check tape crease near the reverse guide. If

tape crease is found, remove it as stated in page 36 "HEIGHT ADJUSTMENT OF REVERSE GUIDE" item 3.

Supply side

Take-up side Supply side Take-up side

PB CHROMA Envelope

CH-1 CH-2

Head switching pulse

Figure 1-34.

4. A/C head X value adjustment 1 Tentatively fix A/C head arm screws 1 and 2 by the

method described in page 35 "Replacement 3".

2 After shortcircuiting R7057 and JUMPER:420, plug

in the powercord, then turn off the power. And set the alignment tape (VROEFZCS) into the unit, turn on the power, then playback it. As a result the autotracking is automatically cancelled, so that the X value adjustment mode is set.

When the tape is below the helical lead.When the tape is above the helical lead.

Adjustment

Supply side guide roller rotated in clockwise direction (lowers guide roller) to flatten envelope.

Take-up side guide roller rotated in clockwise direction (lowers guide roller) to flatten envelope.

Figure 1-35.

3 Move the A/C head with the X value adjustment

gear driver by the method shown in Figure 1-33, and adjust the A/C head so as to get the maximum envelope waveform. (Note: At this time adjust so as to get the maximum envelope waveform nearest the A/C head position which has been set in case of X value rough adjustment as stated in page 37, 3-

2.)

4 Tighten finally the screws 1 and 2. Be sure to

tighten at first the screw 1 and then the screw 2. Final tightening torque is 0.6N·m (If the screw 2 is tightened first, the X value may deviate.)

5 Adjust the playback switching point (Refer to the

electric adjustment method.)

6 Playback the self-picture-recorded tape, and check

the flatness of envelope waveform and sound.

Supply side guide roller rotated in counterclockwise direction (raises guide roller) to make the tape float above the helical lead. The supply side guide roller is then rotated in the clockwise direction to flatten the envelope.

Take-up side guide roller rotated in counterclockwise direction (raises guide roller) to make the tape float above the helical lead. The take-up side guide roller is then rotated in the clockwise direction to flatten the envelope.

• Problems caused by maladjustments

1. Totally maladjusted

• Tapes may get scratched.

• Images onscreen may get distorted or affected by

noises, or may fail to appear.

• The linear audio level may get degraded.

Note:

When the A/C head X value adjustment is performed, be sure to perform at first X value rough adjustment (refer to page 37, 3-2).

Figure 1-36.

Page 39

27DV-S100 27DV-CS10

REPLACEMENT OF THE CAPSTAN D.D. (DIRECT DRIVE) MOTOR

• Removal (Follow the order of indicated numbers.)

1. Remove the reel belt 1.

2. Remove the slow brake lever 2.

3. Remove the three screws 3.

Capstan D.D. motor control PWB

Capstan D.D. motor

Reel belt

Slow Brake Lever

Figure 1-37-1.

REPLACEMENT OF DRUM D.D. MOTOR

1. Set the ejection mode.

2. Withdraw the main power plug from the socket.

• Removal (Perform in numerical order.)

1. Disconnect the FFC cable 1.

2. Unscrew the D.D. stator assembly fixing screws 2.

3. Take out the D.D. stator assembly 3.

4. Unscrew the D.D. rotor assembly fixing screws 4.

5. Take out the D.D. rotor assembly 5.

Notes:

1. In removing the D.D. stator assembly, part of the drum earth spring pops out of the pre-load collar. Be careful not to lose it.

2. Install, so that the D.D. rotor ass'y and upper drum ass'y mounting direction check holes align. (Align the upper drum dent with the rotor hole.)

3. Be careful not to damage the upper drum or the video head.

4. Protect the hole elements from shock due to contact with D.D. stator or D.D. rotor ass'y.

5. After installation adjust the playback switching point for adjustment of servo circuit.

D.D. stator ass'y

• Reassembly

1. Taking care so that the capstan shaft does not contact the mechanism chassis, set its position on the mechanism chassis, and then install with the three screws.

2. Install the slow brake lever.

3. Install the reel belt.

Notes:

1. Before installing the capstan D.D. motor, confirm whether an acetate tape (ZTAPEN120020E) is drawn on the back of mechanism chassis.

Stick on acetate tape on the projection part of the chassis.

Capstan Motor Installation posltion.

MechanismChassis from the back.

Figure 1-37-2.

2. After installing the capstan D.D. motor, be sure to rotate the capstan D.D. motor and check the movement.

3. Set the tape, and check for the tape crease near the reverse guide in the playback mode. Adjust the A/C head and azimuth as stated in page 37 item 2. If crease is found, adjust as stated in page 36 "HEIGHT ADJUSTMENT OF REVERSE GUIDE".

D.D. rotor ass'y

Upper drum

Figure 1-38.

Page 40

27DV-S100 27DV-CS10

REPLACING THE UPPER AND LOWER DRUM ASSEMBLY

• Replacement (Perform in the numerical order)

1 Remove the motor as stated in page 39 D.D. motor

replacement.

2 Remove the drum earth brush ass’y 2. 3 Remove the drum base 3 from the upper and lower

drum assembly 1.

[Cares when replacing the drum]

1. Be careful so that the drum earth brush is not lost.

2. Do not touch directly the drum surface.

3. Fit gently the screwdriver to the screws.

4. Since the drum assembly is an extremely precise assembly, it must be handled with utmost care.

5. Make sure that the drum surface is free from dust, dirt and foreign substances.

6. After replacing the drum be sure to perform the tape running adjustment. After that, perform also the electrical adjustment.

• Playback switching point adjustment

• X-position adjustment and check

• Standard and x-3 slow tracking adjustment

7. After replacing the drum clean the drum.

ASSEMBLING OF PHASE MATCHING MECHANISM COMPONENTS

• Assemble the phase matching mechanism components in the following order.

1. Assemble the pinch roller assembly and pinch drive cam.

2. Mounting the shifter (on the back of the mechanism chassis).

3. Mounting the master cam (on the back of the mechanism chassis).

4. Assemble the connection gear, slow brake and loading motor parts.

• Pinch drive cam and pinch roller assembling

method.

(Place the following parts in position in numerical order.)

(1)Reverse drive lever 1 (2)Reverse guide spring 2 (3)Reverse guide lever ass’y 3 (4)Reverse guide height adjusting nut 4 (5)Pinch drive cam 5 (6)Pinch roller ass’y 6 (7)Open lever 7

Figure 1-40.

4 3

Figure 1-39.

Page 41

1Insert Reverse Guide Lever Ass’y

27DV-S100 27DV-CS10

Insert reverse guide lever ass'y

2 Insert pinch drive cam

Turn the reverse guide lever assembly counterclockwise to the stopper.

Pinch drive lever ass'y

Fit the pinch drive cam so that the notch of pinch drive cam aligns with the dent of pinch drive lever assembly.

Fit the pinch drive cam so that the notch of pinch drive lever assembly aligns with the half-round notch of chassis.

Figure 1-41-1.

2Insert Pinch Roller/Pinch Double Action Lever Ass’y.

Pinch Roller Double Action Lever Ass'y

Phase Matching Point 2

Align here.

3Insert Open Lever.

Open lever

Figure 1-41-2.

Figure 1-41-3.

Page 42

27DV-S100 27DV-CS10

INSTALLING THE SHIFTER

Capstan D.D. motor

Reel pulley

(Bottom side of mechanism chassis)

Figure 1-42.

Insert point 3

Insert point 2

Drum

1. Make sure that the loading gear is at the PhaseMatching point 1 as shown below.

2. Install, paying attention to insert point 5 and release point 3.

3. For the phase matching at the insert point 1, see the Phase-Matching point 2 as shown below.

4. Finally fix the inserts 1 and 4.

Phase-Matching point 2

Loading gear (T)

Round mark

Sifter

Half round notch

Insert point 4

Insert point 1

Shaft 1

Phase-matching point 1

Shaft 1

Rotation point 2

Shaft 1

Figure 1-43.

Shaft 2

Release point 3

Insert point 5

Page 43

27DV-S100

No grease

Apply grease

27DV-CS10

INSTALLING THE MASTER CAM (AT REAR SIDE OF MECHANISM CHASSIS)

1. Make sure beforehand that the shifter is at the point as shown below.

2. Place the master cam in the position as shown below.

E ring (XRESJ30-06000)

Master cam

Fully turn clockwise

Fully turn counterclockwise

Face the wide tooth side ward

Figure 1-44-1.

Note:

See the figure below for the phase matching between the master cam and the casecon drive gear.

3. Finally fix with the E ring.

Master cam

REPLACEMENT OF LOADING MOTOR

• Removal

Figure 1-45.

Casecon drive gear

Round mark

When installing the master cam, align the casecon drive gear round mark with the half-round notch of master cam.

Figure 1-44-2.

Half-round notch

• Replacement

Remove the loading motor, and install the replacement loading motor as shown below.

10.2 mm

–0.2

Figure 1-46.

The loading motor pressing-in must be less than 147 N (15kgf). Adjust the distance between motor and pulley to 10.2

+0.2

mm).

–0.2

Page 44

27DV-S100 27DV-CS10

ASSEMBLY OF CASSETTE HOUSING

1. Drive Gear and R Drive angle ass’y

Apply grease

MSPRT0381AJFJ

Apply grease

2. Synchro Gear, Drive Gear L and Drive Gear R

Top surface should be free from scratches or soil.

Figure 1-47.

LANGF9592AJFW

Drive angle

Drive gear R

Frame

Figure 1-48.

Page 45

27DV-S100 27DV-CS10

ADJUSTMENT OF THE VCR ELECTRICAL CIRCUITRY

Notes:

• Before the adjustment:

Electrical adjustments discussed here are often required after replacement of electronic components and mechanical parts such as video heads. Check that the mechanism and all electric components are in good working condition prior to the adjustments,otherwise adjustments cannot be completed.

• Instruments required:

• Blank video cassette tape • Alignment tape (VROATSV)

Figure 2-1.

Page 46

27DV-S100 27DV-CS10

VCR SERVO CIRCUIT ADJUSTMENT

Note: The procedure of the adjustments is HEAD SWITCHING POINT → SLOW TRACKING PRESET

→ FV of STILL PICTURE

ADJUSTMENT OF HEAD SWITCHING POINT

1. Playback the alignment tape. (VROATSV)

2. Press both REC key and V OL-DO WN ke y on the front panel more than 2 seconds to turn the unit into the adjustment mode. (PROGRAM TIMER LED is lighting and “T” is displayed on the monitor screen.)

3. Press PLAY key.

4. Automatically head switching point adjustment is started, and the unit will be back to PB mode after the adjustment is finished.(PROGRAM TIMER LED is putting out)

5. Press STOP key.

ADJUSTMENT OF SLOW TRACKING PRESET

1. Playback SP and EP mode self recorded tape.

2. Playback SP mode recorded portion at slow mode.

3. Press both REC key and VOL-DOWN key on the front panel more than 2 seconds to turn the unit into the adjustment mode. (PROGRAM TIMER LED is lighting and “T” is displayed on the monitor screen.)

4. Press SLOW key.

5. Automatically adjustment start, and the unit will be back to slow mode after the adjustment is finished. (PR OGRAM TIMER LED is putting out).

6. To check the still noise, push PLAY key and then STILL key.

7. Next playback EP mode recorded portion at slow mode.

8. As same as 2-6 items, adjust EP mode slow tracking preset and EP mode noise.

ADJUSTMENT OF FV (False Vertical Sync) OF STILL PICTURE

1. Play a cassette which was self-recorded by the unit in SP mode.

2. Press the PAUSE/STILL button to freeze the picture.

3. Look at the monitor screen and adjust the TRACKING (+) and / or (–) b uttons so that the v ertical jitter of the picture is minimized.

4. Play and freeze the self-recorded tape in EP mode and make sure the vertical jitter of the picture is not noticeable.

Page 47

TEST MODE OF DVD SECTION

The preparation date display of the program 10000000 ~~~~~~~~

(Last update)

Model number display 10000001 0000D031

(Model number)

The version display of the program 10000002 ~~~~~~~~

(Program version)

Region number display 10000003 00000001

(Region code: binary display)

Micro-code number display 10000004 ~~~~~~~~

(Micro-code version)

The preparation date display of the servo program 10000005 ~~~~~~~~

(Servo version)

Check mode of the DVD program contents

Press the "1" key on the remote control or the "STOP" key on the main unit.

(DVD test mode)

Laser test mode

Press the "1" key.

Press the "3" key. (to turn the unit into the dynamic test mode.)

(Turn the power off to cancel the dynamic test mode.)

(Unplug the AC cord to cancel the laser test mode.)

Press the "PLAY" key.

Press the"PLAY" key.

The display is returned to the initial screen of the test mde.

Press the"PLAY" key.

Press the "1" key.

To (1)

Micro-code means the process program of the system IC.

The tray opens, the DVD laser is lit, the spindle turns momentary and the sled moves to the outer side.

"NO DISC" state

Press both of the "PLAY" key and the "STOP" key on the DVD front panel of the main unit for 5 seconds during the DVD mode to turn the unit into the DVD test mode. (Turn the power off to cancel the test mode.)

F0000000 00000000

DYNAMIC TEST 30000000 00000000

LASER TEST 30000001 000000DD

Press the "1" key.

The DVD laser goes out, the CD laser is lit, the spindle turns momentary and the sled moves to the outer side.

LASER TEST 30000001 000000CD

Press the "1" key.

The DVD and CD lasers go out, the spindle turns momentary and the sled moves to the outer side.

LASER TEST 30000001 00000000

27DV-S100 27DV-CS10

Page 48

27DV-S100 27DV-CS10

From (1) (dynamic test mode)

Step test mode

Press the "2" key.

STEP TEST 30000001 00000000

Press the "OPEN/CLOSE" key. (to close the tray.)

STEP TEST 30000200 00000000

STEP TEST 30000201 00000000

Press the "PLAY" key.

STEP TEST 30000202 00000000

Press the "PLAY" key.

STEP TEST 30000203 00000000

Press the "PLAY" key.

STEP TEST 30000204 00000000

Press the "PLAY" key.

STEP TEST 30000205 00000000

Press the "PLAY" key. (DVD operation)

STEP TEST DD000210 00000000

STEP TEST DD000211 00000000

Press the "PLAY" key.

STEP TEST END DD000212 ~~~~~~~~

(~~~~~~~~ is sector ID (address))

(Unplug the AC cord to cancel the step test mode.)

Put a disc on the tray after the tray is opened.

(loading the disc)

Focus on

RF gain adjustment, Tracking on

Focus gain adjustment

Tracking gain adjustment

Focus balance adjustment

In case of 2–layer DVD, RF gain, focus gain and focus balance adjustments of layer 0.

Reading control data

Tracing playback mode

(CD operation)

STEP TEST END CD000210 ~~~~~~~~

(~~~~~~~~ is SUB-Q (address))

Tracing playback mode after reading TOC. (TOC: Table of Contents)

To (2)

Tracing playback, jump test mode

Press the "3" key.

PLAY TEST 30000001 00000000

Press the "OPEN/CLOSE" key. (to close the tray.)

PLAY TEST DD000302 ~~~~~~~~

Pressing the keys on the remote control mentioned in the table below enables the jump test.

(Unplug the AC cord to cancel the tracing playback, jump test mode.)

Key

1 4 7

CLEAR

2 5 8

SKIP/REV

Put a disc on the tray after the tray is opened.

Tracing playback mode (~~~~~~~~ is sector ID (address))

Jump

–15000

–1 –102 –510 –511 –765 –766

–7000

Key

3 6 9

MEMORY

REPEAT

PROGRAM

SKIP/FWD

Jump

1 102 510 511 765

7000

15000

Page 49

Spindle offset adjustment mode

Press the "DISC MENU" key.

(When the adjustment is complete, the unit turns back to the dynamic test mode, and "3000000 00000000" is displayed on the screen.)

Tray is opened.

From (2) (dynamic test mode)

SPIN OFFSET

(The spindle offset is adjusted automatically.) The adjustment result is indicated in the ~~~~ portion.

ADJUST COMPLETE 00000000 00000~~~~

[ROM REWRITING MODE]

This mode is able to update the version of the DVD program. Please confirm the program version according to the procedure for the DVD test mode before you start the rewriting.

1. Connect a computer to the unit as shown below. Start the rewriting software of the computer.

2. Pressing both of the "PLAY" key and the "SKIP/FWD" key on the DVD front panel of the unit, turn the power on. (Keep on pressing both keys for 3 seconds or so.) The unit turns into the ROM rewriting mode, and the VCR indicator starts flashing at 1Hz.

3. Following the computer’s onscreen message, type in "Y" and press "ENTER" key. When the command for the data transfer starts the rewriting job, the VCR indicator and the DVD indicator are alternately flashing at 1Hz.

4.When the rewriting is complete, only the DVD indicator keeps on flashing at 1Hz.

5.Finally press the "STOP" key of the DVD and turn the power off.

Computer

(DOS)

TV/VCR/DVD

27DV-S100

27DV-CS10

ROM writing tool

Connect to the DIGITAL OUT terminal.

27DV-S100 27DV-CS10

Page 50

MECHANISM OPERATION FLOWCHART

* This flowchart describes the outline of the mechanism’s operation, but does not give its details.

CASSETTE INSERTION STOP

End

27DV-S100

MECHANISM OPERATION FLOWCHART AND TROUBLESHOOTING GUIDE

27DV-CS10

G mechanical timing

Mode check Cam mark

Mode detection outside (D709 SW B)

Mode detection inside (D708 SW A)

Mode detection outside Mode detection inside S sensor

S sensor

CA/END CS/EJ

0 19.812 81 179 233200 265 282 316 334

10.354 12.812

EJ UL PU PU2 VSR PB SLW FF STP

Open Close

60 120 180 240 300 380

101

1 or 0

CS/EJ ULD PU1 PU2 VSR PB SLOW FF STOP

Cam graph E

10111110100010100010000010

Mode detection inside

sensor A

1 1 1 0 0 0 0 0 0

PU1

Mode detection outside

sensor B

0 1 1 1 1 0 1 1 0

PU2

VSR

PB SLOW

Insert cassette.

Cassette is ejected and loading motor stops.

Double action rack slides.

Start sensor close.

Loading motor starts in normal direction and master cam counter

Cassette

clockwise.

inserting

Does mechanism position sw.

STOP

come off within 2.5 sec.?

YES

Are start/end sensors at low level before cassette insertion ?

001

0100010

YES

Loading motor turns in reverse direction and master cam counterclockwise.

(Cassette is judged caught halfway.)

(Cassette LED or some other part is judged defective.)

Drum motor starts.

Tape loading.

Pinch roller comes into contact.

Fullloading

Cam switch is at PB position.

Loading motor stop.

Is drum FG pulse outputted ?

YES

End

Unloading

Page 51

STOP REC/PLAY

PLAY STILL

PLAY VSR

VSR PLAY

Capstan motor turns counterclockwise.

Is take-up reel sensor signal outputted ?

End

Press REC/PLAY key.

Picture appears.

Unloading

Set capstan motor to search speed.

End

Press FF key.

PLAY VSF

REC/PLAY STOP

Capstan motor turns in reverse direction.

Loading motor turns in counterclockwise direction and master cam clockwise.

Slow brake comes into contact with capstan motor.

Slow brake pressing

Cam switch is at STILL position.

End

Capstan motor stops.

Press STOP key.

Loading motor stops.

End

Stop capstan motor.

YES

Press STILL key.

Pinch roller releasing

Idler swinging

Pinch roller pressing

Loading motor turns clockwise and master cam counterclockwise.

Turn capstan motor in reverse direction.

Turn loading motor counterclockwise.

Cam switch is at VSR position.

Set capstan motor to search speed.

Is take-up reel sensor signal outputted ?

Press REW key.

Release pinch roller.

Cam switch is at PU2 position.

Cam switch is at PU1 position.

Stop loading motor.

Press pinch roller.

Loading motor turns clockwise.

Release the supply auxiliary brake.

Stop loading motor.

End

Unloading

Cam switch is at PB position.

End

Press PLAY Key.

Loading motor turns counterclockwise and master cam clockwise.

Capstan motor turns counterclockwise. PB speed.

YES

27DV-S100

27DV-CS10

Page 52

27DV-S100

STOP FF/REW

STOP CASSETTE EJECT

FF/REW STOP

FF/REW operation

Brake function

Turn capstan motor in normal or reverse direction, after the remaining tape has been detected.

Loading motor turns counterclockwise.

Cam switch is at Stop position.

End

Press STOP key.

Press FF/REW key.

Stop capstan motor.

Loading motor stops.

End

Loading motor turns in clockwise and master cam counterclockwise.

4 supply reel pulses outputted ?

Does the take-up reel pulse output two edges ?

Capstan motor turns clockwise.

Loading motor turns clockwise.

Cam switch is at Eject position.

Loading motor stops.

Capstan motor stops.

Press EJECT key.

Tape unloading

Cassette eject

End

Capstan motor turns clockwise.

Capstan motor turns counterclockwise in about 2 seconds.

Stop loading motor.

Capstan motor turns in reverse direction.

Cam switch is at UL position.

YES

27DV-CS10

Page 53

MECHANISM TROUBLESHOOTING

1. FF/REW FAILURE (NO TAPE WINDING)

Press FF key.

NO NO NO

YES

YES YES

Is master cam at FF position ?

Does loading motor operate ?

Modes changing smoothly through cam switch ?

Loading motor control system in trouble.

Are Vco 12V and Vcc 5V applied ?

Replace the capstan motor.

Replace the idler ass’y.

Replace the reel sensor.

Is voltage applied to loading motor ?

Loading motor is damaged. Replace it.

Voltage supply system in trouble.

Mode sensor system in trouble or master cam malpositioned.

Voltage supply system in trouble.

Does capstan motor turn in FF (or REW) direction ?

Are idler wheel ass’y and reel disk in mesh ?

Is the pulse outputted from reel sensor ?

The cassette tape is presumably damaged.

2. REC/PLAY FAILURE (MODE RELEASE)

NO NO NO

YES

YES YES

Is the master cam at PB position ?

Does loading motor operate ?

Modes changing smoothly through cam switch ?

Loading motor control system in trouble.

Are Vco 12V and Vcc 5V applied ?

Replace the capstan motor.

Replace the idler ass’y.

Replace the reel sensor.

Is voltage applied to loading motor ?

Loading motor is damaged. Replace it.

Voltage supply system in trouble.

Does capstan motor turn ?

Are idler wheel ass'y and reel disk in mesh ?

Is the pulse outputted from reel sensor ?

Check main PWB.

27DV-S100

27DV-CS10

Page 54

Replace loading motor block.

3. WINDING FAILURE AT VSR 4. UNUSUAL SOUND IN EACH MODE

Is Playback function normal ?

Master cam shifting to VSR position ?

Go to 2. REC/ PLAY FAILURE routine.

Replace idler gear ass’y.

Replace limiter pulley ass’y.

Replace reel sensor.

Go to 2. REC/ PLAY FAILURE routine.

Are idler wheel ass’y and supply reel disk in mesh ?

Is supply reel disk winding torque normal ?

Is pulse outputted from reel sensor ?

Check main PWB.

YES

Press REW key.

4-i) Unusual sound in cassette insertion and ejection mode

Is unusal sound heard during cassette control running ?

Unusual sound heard with pinch roller lever going up or down ?

Is unusual sound heard during loading/unloading ?

Check pinch roller drive cam, pinch roller drive lever and reverse guide for their actions. Replace damaged one with new one.

Replace cassette control ass’y.

27DV-S100

27DV-CS10

Page 55

YES

Replace capstan motor.

4-ii) Unusual sound in FF/REW mode

Is reel disk height as specified ?

Thrust gap found at reel disk ?

Drive system out of contact with any part on main PWB ?

Turn capstan motor by hand. Unusual sound heard ?

Check drive system’s gears for damage. Replace damaged gear with new one.

• Reel disk

• Limiter pulley ass’y

• Idler wheel ass’y

Check reel disk and main chassis. And replace defective parts.

Adjust reel disk height.

Rearrange the parts on main PWB.

27DV-S100

27DV-CS10

Page 56

27DV-S100

27DV-CS10

No turn on

System control(IC2001) pin(36),(51),(73)= 5V ?

YES

System control(IC2001) pin(37),(38)= 14.32MHz ?

YES

System control (IC2001) pin(25)= 5V ?

YES

System control (IC2001) pin(1)= 60Hz signal ?

YES

System control (IC2001) pin(4)(power control)=5V ? pin(13)(TV power)=5V ? (when turn on)

Check 5V regulator (IC9021)

YES

Check X7001

Check reset circuit (IC2002)

Check TC detector (IC901)

Power control SW(Q9101) and relay (RY9701) are normal ?

YES

FLOW CHART No. 1-1 FLOW CHART No. 1-2

+B voltage = 130V ? (L9720)

RGB AMP (IC8850) bias output from pin (9),(8),(7)?

Check CRT screen control and FBT (T5603)

Check power control circuit and relay drive circuit

No raster

YES

Check TV power circuit

RGB AMP (IC8850) pin(6)=210V?

Replace IC8850

YES

Check HEATER line

TROUBLESHOOTING FLOWCHARTS OF TV SECTION

Replace IC2001

12V REG (IC9740) pin(3)=12V?

YES

Error amp (IC9741) pin(1)=130V ?

YES

Check deflection circuit and FBT

Check IC9740 and 12V line of TV power circuit

Check 130V line and other TV power circuit

Page 57

No video No color

AV SW (IC1301), video signal (1Vp-p) input to pin(63) (Tuner), pin(8) (LINE1), pin(15) (LINE2) ?

YES

Check each line

Tuner TU1951 pin(19) output LINE1 J1301 LINE2 J3801

FLOW CHART No.1-3 FLOW CHART No.1-4

Y/C separation (IC1401), chroma signal output from pin(13) ?

YES

Y/C separation (IC1401),

3.58MHz signal input to pin(10)?

YES

Replace IC1401

AV SW (IC1301), video signal (2Vp-p) output from pin(53) ?

YES

Y/C separation (IC1401), video signal (0.75Vp-p) input to pin(4) ?

YES

Y/C separation (IC1401), Y-Signal (1.30Vp-p) output from pin(15) ?

YES

Video chroma (IC4401), Y-signal input to pin(15) ?

YES

Video chroma (IC4401), Y-signal output from pin(4) and input to pin(53)?

YES

Video chroma (IC4401), R,G,B-signal output from pin(43), (42), (41) ?

YES

RGB amp (IC8850), RGB-signal input to pin(1), (2), (3) ?

YES

RGB amp (IC8850), RGB-signal output from pin(9), (8), (7) ?

YES

Check IIC-Bus and +9V line pin(33), (34) (IIC-Bus), pin(42) (+9V)

Check video signal line between IC1301 and IC1401

Y/C separation (IC1401), fsc (3.58MHz) input to pin(10) ?

YES

Replace IC1401

Check between IC1301 and IC4401

Check Video chroma circuit

Check between Terminal PWB and CRT PWB

Replace IC8850

Video chroma (IC4401), chroma signal input to pin(13)?

YES

Video chroma (IC4401), pin(10)=3.58MHz signal?

YES

Video chroma (IC4401), pin(5), (6) output from B-Y, R-Y signal and pin(52), (51) input to B-Y, R-Y signal?

YES

Replace IC4401

Check between IC1401 and IC4401

Video chroma (IC4401)

3.58MHz signal output to pin(1)?

Check between IC1401 and IC4401

Check X-tal (X4801)

Check color control of picture adjustment

YES

27DV-S100

27DV-CS10

Check the CRT screen control

Page 58

No Sound Protect Mode

IC3001(MTS) Audio signal output from pin(3),(2)?

Speaker amp (IC6351) pin(10) = 27V ?

Speaker amp (IC6351) Audio signal input to pin(2), (5) ?

Speaker amp (IC6351) pin(8) = 0V ?

Check between TV Power PWB and speaker.

IC3001 (MTS) Audio signal output from pin(40), (39)?

IC3001 (MTS) Audio signal input to pin(14)?

Replace IC3001

YES

FLOW CHART No.1-5 FLOW CHART No.1-6

YES

Check TV power circuit

Check between IC3001 and IC6351

Check speaker mute line between IC2001 (µ-com) and IC6351

Check between IC3001 and IC3201 (EQ Sound)

Check between TU1951 (tuner) to IC3001

When a unit changes into a dangerous state, it turns off automatically and makes Power LED flash on and off continually to indicate the Protect Mode. Flashing 1 time X-Ray (/Def. Over Current/Dynamic Focus Over Voltage) protect Flashing 2 times Vetical-Out Protect Flashing 3 times TV Power Short Protect

X-Ray Protect

System control (IC2001) pin(83) = 5.0V("H")?

X-Ray protector Q2808 collector = 5.0V("H")?

X-Ray protector D5623 anode = over 4V?

YES

X-Ray protector D5623 cathode = over 13.5V?

Def. over current protector Q5606 base = over 4V?

YES

Def. over current detector Q5610 collector = about 130V?

Dynamic focus over voltage detector D5627 anode = over 5V?

(Check when power On)

YES

Check or replace IC2001

YES

Check between Q2808 and IC2001

Check between D5623 and Q2808 base

YES

+B voltage (L9720) = 130V?

YES

Check Hi-Voltage (33kV;CRT anode), FBT T5603 and peripheral circuit

Check Q5606 and D5608

YES

Check FBT T5603, peripheral circuit and deflection circuit

YES

Check dynamic focus circuit (Q5604, T6601 and peripheral circuit)

Check TV power circuit

27DV-S100

27DV-CS10

Check R5646, R5648 and D5628

Page 59

Vertical Out Protect

(Check when power on)

FLOW CHART No.1-7

TV Power Short Protecto

FLOW CHART No.1-8

(Check when power on)

System control (IC2001) V-pulse input to pin(45)?

Vertical out (IC5601) V-pulse output from pin(3)?

NO YES

Def. processor (IC5602) V-Pulse output from pin(9)?

Video-Chroma (IC4401) HPulse output from pin(23)?

YES

System control (IC2001) pin(97) = over 3.5V?

D5625 cathode H-pulse output from FBT?

Q5612 base H-Pulse output from T5602 pin(4)?

Video-chroma (IC4401) H-Pulse output from pin(23)?

Check Video-chroma circuit and replace IC4401

Check between IC5601 to IC2001

YES

Check between IC5602 to IC5601

YES

Check between IC4401 to IC5602

YES

Replace IC2001

NO NO

YES

Check between D5625 and IC2001

YES

Check FBT and C5633/C5639

YES

Check between IC4401, Q5608 and T5602

System control (IC2001) pin(86) = 0V("L")?

Short protector drive Q9752 collector = 0V?

27V Line D9751 cathode = normal (27V)?

16V Line D9752 cathode = normal (16V)?

8V Line D9755 anode = normal (8V)?

Check 130V line and peripheral circuit

YES

Check or Replace IC2001

YES

Check between Q9752 and IC2001

YES

Check 27V line and IC6351

YES

Check 16V line and 12V regulator IC9740

YES

Check 8V line and 5V regulator IC1902

27DV-S100

27DV-CS10

Page 60

TROUBLESHOOTING MECHANISM CONTROLLER (1)

Mechanism malfunction.

Turn off AC power and get the set restarted.

FLOW CHART No. 2-1

27DV-S100

27DV-CS10

TROUBLESHOOTING FLOWCHARTS OF VCR SECTION

No power is supplied (PC5V).

Turn on power. Is the voltage at pin (4) of IC2001 at "H" level?

YES

Is PC5V available?

Check the PC12V line and PC23V line.

Replace IC2001.

YES

Does the AT5V line function?

YES

Is there 14MHz oscillation at pins (37) and (38) of IC2001?

YES

The REC key does not function. All the other keys function.

NO NO NO NO

Check Q9101.

Is the cassette tape without erase protection tag?

YES

No recording can be made on cassette tape without the tag.

Does the REC TIP switch function?

Replace the REC TIP switch.

YES

Is there the REC TIP SW signal at pin (64) of IC2001?

The unit stops 3 seconds after loading.

Is there the H.SW.P. output signal at pin (23) of IC2001?

YES

Replace IC2001.

See Flowchart No. 10.

YES NO

Check IC9021 and its peripheral circuits.

Check IC2001 and X7001.

The unit stops 5 seconds after loading.

Is there the reel pulse input signal at pins (2) and (3) of IC2001?

YES

Replace IC2001.

See Flowchart No. 11.

The pinch roller fails to contact the capstan during loading.

Does the loading motor stop after loading?

YES

Check the pinch roller pressure.

Check the cam switches D7008 and D7009.

The FF or REW key does not function.

See Flowchart No. 3.

The EJECT key alone functions.

A cassette tape is inserted but pops out itself.

See Flowchart No. 2.

Replace IC2001.

Check the signal line.

Page 61

FLOW CHART No. 2-3FLOW CHART No. 2-2

Cassette tape failure to come in or unexpected ejection.

Push in the cassette tape. Does the start sensor (Q7001(C)) shift from "H" to "L" level?

YES

Push in the cassette tape. Does the loading motor start?

YES

Push in the cassette tape. Are both the start sensor and end sensor at "H" level?

YES

Check the setup of relay gear and master cam. Check the cassette controller for misalignment.

Check the performance of the cassette controller's doubleacting rack. Check also the start sensor (Q7001) and cassette LED (D7001). Replace as required.

Go to Flowchart No. 5 "Loading motor failure to start".

Check the start sensor (Q7001) and end sensor (Q7002). Replace as required.

No tape travel in FF/REW mode.

Are both the start sensor and end sensor at "H" level?

YES

Push in the cassette tape and immediately press the FF key. Is the remaining tape fastforwarded at "PB" position?

YES

Press the FF/REW key after the above FF action. Does the loading motor start?

YES

Does the master cam shift to "FF" position? (See Mechanism Operation Flowchart.)

YES

Is the drum motor running?

YES

Is there the H.SW.P. output signal?

YES

Is the capstan motor running?

YES

Is the reel running with the idler in mesh with the reel stand?

YES

Are there the supply and takeup reel pulse input signals at pins (2) and (3) of IC2001?

YES

Cassette tape assumed to be defective.

Check the start sensor (Q7001) and end sensor (Q7002).

Go to Flowchart No. 5 "Loading motor failure to start".

Are there the specified mechanism position input signals at pins (6) and (7) of IC2001?

Check IC2001 and replace as required.

Go to Flowchart No. 6 "Drum motor failure to start".

Go to Flowchart No. 10 "No H.SW.P. output signal".

Go to Flowchart No. 8 "Capstan motor failure to start".

Replace the idler assembly.

Go to Flowchart No. 11 "No supply and take-up reel pulse output".

YES

Check the setup of master cam and relay gear. Check also the mechanism position sensors (D7008 and D7009). Replace as required.

27DV-S100

27DV-CS10

Page 62

Unexpected clearing out of REC/PB mode.

Are both the start sensor and end sensor at "H" level?

YES

Is the master cam at "PB" position? (See Mechanism Operation Flowchart.)

YES

Is the drum motor running?

YES

Is there the H.SW.P. output signal?

YES

Is the capstan motor running?

YES

Is the reel running with the idler in mesh with the reel stand?

YES

Go to Flowchart No. 11 "No supply and take-up reel pulse output".

Check the start sensor (Q7001) and end sensor (Q7002). Replace as required. Check also the cassette tape (for

magnetic substance peel-off, for example).

Is the loading motor running?

Are there the specified mechanism position signals at pins (6) and (7) of IC2001?

Check IC2001 and replace as required.

Go to Flowchart No. 6 "Drum motor failure to start".

Go to Flowchart No. 10 "No H.SW.P. output signal".

Go to Flowchart No. 8 "Capstan motor failure to start".

Replace the idler assembly.

YES

FLOW CHART No. 2-4

Go to Flowchart No. 5

"Loading motor failure to start".

Check the setup of relay

gear and master cam. Check also the mechanism position sensors (D7008 and D7009). Replace as required.

Loading motor failure to start.

Are the control signals at pins (11) and (12) of IC7006 as specified? (See the table at right.)

YES

Is PC12V applied at pins (9) and (10) of IC7006?

YES

Do the voltages (shown at right) appear at pins (13) and (15) of IC7006?

YES

Disconnect the loading motor connector "AL" and apply external DC voltage (about DC8V) to the motor terminal. Does the motor start?

YES

Check the loading motor connection with pins (13) and (15) of IC7006.

Drum motor failure to start.

Are 12V and 5V applied at pins (21) and (3) of IC7006 respectively?

YES

Does the voltage at pin (2) of IC7006 become about 2.6V in the drum motor startup timing?

YES

Check the connection between connectors AD and ME. Replace the drum motor.

Check pins (91) and (90)

of IC2001. Check also the IC2001 performance. Replace as required.

NO NO

Check the PC12V line.

Replace IC7006.

Check the mechanism for overload, and the setup of relay gear, master cam and shifter. Replace the loading motor.

Check the PC12V and PC5V lines.

Are there the PWM output signals at pins (32) and (34) of IC2001?

YES

Check the line between pins (32)/(34) of IC2001 and pin (2) of IC7006.

FLOW CHART No. 2-5

Normal turn (loading direction)

Reverse turn (unloading direction)

Stop

Normal turn

Reverse turn

Pin (11) Pin (12)

Pin (13) Pin (15)

About 11V About 1V

FLOW CHART No. 2-6

Check IC2001 and replace as required.

About 1V About 11V

H : 4.7 V L : 0V

27DV-S100

27DV-CS10

Check IC2001 and replace as required.

Page 63

FLOW CHART No. 2-9FLOW CHART No. 2-7

Drum motor failure to stop.

Is about 0.6V applied at pin (2) of IC7006?

YES

Replace the drum motor.

Capstan motor failure to start.

Is 5V applied at pin (8) of connector AC?

YES

Is 23V applied at pin (5) of connector AC?

YES

Is about 2.6V applied at pin (4) of connector AC?

YES

Is about 2.7V applied at pin (3) of connector AC?

YES

Check the connection between connectors AC and MC. Replace the capstan motor.

Is about 0V applied at pin (47) of IC2001?

Check R7059 and R7002.

Check the CAP5V line (around Q9103) and replace as required.

Check the PC23V line.

Are there the PWM

output signals at pins (31) and (33) of IC2001?

Check the line between pins (31)/(33) of IC2001 and pin (4) of connector AC

Is 5V applied at pin (92) of IC2001?

Check R7032, R7034, R7035, R7036, R7037 and C7030.

YES

Check IC2001 and replace as required.

Capstan motor failure to stop.

Is 0V applied at pin (4) of connector AC?

YES

Replace the capstan motor.

No H.SW.P. output signal.

Is the drum motor running?

YES

Is there the drum PG signal at pin (66) of IC2001?

YES

Is there the drum FG signal at pin (65) of IC2001?

YES

Is there the H.SW.P. signal at pin (23) of IC2001?

YES

Check the H.SW.P. signal line.

NO NO

Is 0V applied at pin (29) of IC2001?

YES

Check R7054 and replace as required.

Go to Flowchart No. 6

"Drum motor failure to start".

Check the drum PG

signal line between pin (7) of IC7006 and pin (66) of IC2001.

Check the drum FG

signal line between pin (8) of IC7006 and pin (65) of IC2001.

Check IC2001 and replace as required.

FLOW CHART No. 2-10FLOW CHART No. 2-8

27DV-S100

27DV-CS10

Page 64

No supply and take-up reel pulse output.

Capstan servo malfunction.

27DV-S100

27DV-CS10

FLOW CHART No. 2-13FLOW CHART No. 2-11

Insert a cassette tape and call the FF or REW mode.

Are pulses coming out of the supply reel sensor (D7006) and take-up reel sensor (D7007)?

YES

Check the lines between the reel sensors and pins (3)/(2) of IC2001.

Drum servo malfunction.

Are there the reference signals (14MHz) at pins (37) and (38) of IC2001?

YES

Does the servo malfunction in the REC mode alone? (Make recording and playback. Does the switching point appear onscreen and slowly move?)

Is there the H.SW.P. signal at TP3302?

YES

Does the PC12V line function?

YES

Does the duty ratio of the drum error output at pins (32) and (34) of IC2001 change according to the rpm (by gently pressing on the drum motor)?

YES

Check the connection between pins (32)/(34) of IC2001 and pin (2) of IC7006, as well as the connection between IC7006 and drum motor. Replace the drum motor as required.

Check the reel sensors for stain

and poor positioning. Check the clearance between the mechanism and main PWB. Replace the reel sensor(s) as required.

Check X7001, C7007 and C7008 for malfunction.

Is there the composite

YES

sync signal at pin (50) of IC2001?

YES

Go to Flowchart No. 10 "No H.SW.P. output signal".

Check the PC12V line.

Check IC2001 and replace as required.

FLOW CHART No. 2-12

Check the line

between pin (52) of IC2201 and pin (50) of IC2001.

Are there the reference signals (14MHz) at pins (37) and (38) of IC2001?

YES

Does the drum servo function?

YES

Make recording on a tape with a welladjusted set, and play back the recording.

YES

Are there the record control signals at pins (74) and (75) of IC2001 in the REC mode?

YES

Are there the record control signals at pins (5) and (6) of connector AA?

YES

Check the connection between connectors AA and MH. Check the A/C head for height, stain, etc.

Replace the A/C head.

Check the record control signal line.

Check IC2001 and replace as required.

Check X7001, C7007

and C7008 for malfunction.

Go to Flowchart No. 12

"Drum servo malfunction".

Is there the playback

control signal at pin (76) of IC2001 during the play of the recorded tape?

Is there the specified capstan FG signal at pin (67) of IC2001?

Does the duty ratio of the capstan error output at pins (31) and (33) of IC2001 change according to the rpm (by gently pressing on the drum motor)?

Does the voltage at pin (4) of connector AC change according to the rpm?

Check the connection between connectors AC and MC. Replace the capstan motor.

Check IC2001 and replace as required.

YES

Check the connection between connectors AA and MH. Check the

A/C head for stain, height, breakage, etc. Replace as required.

YES

Is there the specified

capstan FG signal at pin (6) of connector AC?

YES

Check IC2001 and replace as required.

Check the line between pins (31)/(33) of IC2001

and pin (4) of connector AC.

Check the line between pin (6) of connector AC and pin (67) of IC2001.

Check the connection between connectors AC and MC. Replace the capstan motor.

YES YES

Check the line between pins (5)/(6) of connector AA and pins (74)/(75) of IC2001.

YES

Page 65

Video recoding (luminance) failure.

FLOW CHART No. 2-14

Recording possible, but no colors.

Is there signal at pin (30) of IC2201?

YES

Check the line between pin (41) of IC1301 and pin (30) of IC2201.

Is there signal at pin (52) of IC2201?

YES

Is there signal at pin (41) of IC1301?

Is 5V voltage applied

at pins (12), (36), (38), (40), (41), (43), (61), (67), (90) and (96) of IC2201?

Are there the I2C clock and data signals at pins (62) and (63) of IC2201?

YES NO

Replace IC2201.

YES NO

Check the tuner/IF circuit (TU261) or J405, J401 and their peripheral parts.

YES NO

Check the YC5V line.

Check the line between pins (62)/(63) of IC2201 and pins (57)/(56) of IC2001.

Is there the luminance input signal (about 0.5Vpp) at pin (19) of IC2201?

YES

Is there the luminance input signal (about 0.3Vpp) at pin (42) of IC2201?

YES

Is there the luminance input signal (about 0.5Vpp) at pin (26) of IC2201?

YES

Is there the luminance input signal (about 0.5Vpp) at pin (23) of IC2201?

YES

Are there the luminance input and output signals (about 0.5Vp-p) at pins (13) and (14) of IC2201 respectively?

YES

Check the line between

pins (18) and (19) of IC2201. (Check C2206.)

Check the line between pins (21) and (42) of IC2201. (Check C2208.)

Check the line between pins (26) and (39) of IC2201. (Check C2212.)

Is there the luminance output signal (about 0.5Vpp) at pin (39) of IC2201?

Is 5V voltage applied at pin (36) of CCD power terminal IC2201?

Make sure that the CCD clock signal (about

7.16MHz/0.5Vp-p) is applied from pin (69) to pin (44) of IC2201.

Check the line between

pins (23) and (24) of IC2201. (Check C2210.)

Check the peripheral

circuits of pins (13) and (14) of IC2201. (Check R2201, R2202 and C2203.)

YES

Is 5V voltage applied at pin (61) of chroma power terminal IC2201?

YES

Is there the chroma input signal (about 143mVp-p /Burst) at pin (46) of IC2201?

YES

Is there the chroma input signal (about 180mVp-p /Burst) at pin (58) of IC2201?

YES

Check the peripheral

circuits of pin (61) of IC2201 and the YC5V line.

Check the line between pins (46) and (60) of IC2201. (Check C5512.)

YES

Make sure oscillation (3.58MHz) occurs at pins (71) and (73) of IC2201.

Check the line between pins (35) and (58) of IC2201. (Check R5505 and C5515.)

YES

Is there the chroma

output signal (about 180mVp-p/Burst) at pin (35) of IC2201?

SP mode: Are there the record FM output signals (about 20mAp-p) at pins (88), (89) and (SP1), as well as pins (86), (87) and (SP2) of IC2201? EP mode: Are there the record FM output signals (about 20mAp-p) at pins (93), (94) and (EP1), as well as pins (91), (92) and (EP2) of IC2201?

YES

Check the cylinder. Replace as required.

Make sure that YC5V is applied at pin (90) of IC2201.

27DV-S100

27DV-CS10

Page 66

Video playback failure.

FLOW CHART No. 2-15

Recording and playback possible, but no colors.

27DV-S100

27DV-CS10

Is there the FM input signal (about

0.4Vp-p) at pin (78) of IC2201? YES

Are there the luminance input and output signals (about 0.25Vp-p) at pins (13), (14) and (16) of IC2201 respectively?

YES

Is there the luminance input signal

(about 0.5Vp-p) at pin (19) of IC2201?

YES

Is there the luminance input signal (about 0.3Vp-p) at pin (42) of IC2201?

YES

Is there the luminance input signal (about 0.5Vp-p) at pin (26) of IC2201?

YES YES

NO NO

Check the line between pins (78) and (79) of IC2201.

YES

Is there the luminance output signal (about 0.4Vp-p) at pin (79) of IC2201?

Is the V-H.SW.P. signal applied at pin (81) of IC2201?

Check the V-H.SW.P. signal line.

Check the peripheral circuits of pins (13), (14) and (16) of IC2201. (Check C2203, R2201, R2202, L2204, C2205 and R2203.)

Check the line between pins (18) and (19) of IC2201. (Check C2206.)

Check the line between pins (21) and (42) of IC2201. (Check C2208.)

Check the line between pins (26) and (39) of IC2201. (Check C2212.)

Is there the luminance output signal (about 0.5Vp-p) at pin (39) of IC2201?

Is the CCD control voltage of about 5V applied to pin (37) of IC2201? Check to see if the CCD clock signal (about 7.16MHz/0.5Vp-p) is applied from pin (69) to pin (44) of IC2201.

Is 5V voltage applied at pin (61) of chroma power terminal IC2201?

YES

Is there the chroma input signal (about 403mVp-p/Burst) at pin (46) of IC2201?

YES

Is there the chroma input signal (about 508mVp-p/Burst) at pin (58) of IC2201?

YES

Is there the chroma output signal (about 286mVp-p/Burst) at pin (55) of IC2201?

Check the line between pin (55) of IC2201 and pin (5) of IC1301. (Check R5503 and C5510.)

Replace IC2201.

Is 5V voltage applied at pin (36) of CCD power terminal IC2201?

YES

Check the peripheral circuits of pin (61) of IC2201 and the PC5V line.

Check the line between pins (46) and (60) of IC2201. (Check C5512.)

YES

Make sure oscillation (3.58MHz) occurs at pins (71) and (73) of IC2201.

Check the line between pins (35) and (58) of IC2201. (Check R5505 and C5515.)

YES

Is there the chroma output signal (about 508mVp-p/Burst) at pin (35) of IC2201?

Is there the luminance input signal (about 0.5Vp-p) at pin (23) of IC2201?

YES

Replace IC2201.

Check the line between pins (23) and (24) of IC2001. (Check C2210.)

Page 67

FLOW CHART No. 2-17FLOW CHART No. 2-16

Hi-Fi audio recording failure.

Are the following signals applied to the terminals of IC6651?

L-ch

Pin (14) Pin (9)

Are 5V and 9V voltages applied at pins (40) and (58) of IC6651 respectively?

Are there the audio output signals at pins (53) and (57) of IC6651?

YES

Are there the serial clock and data signals at pins (42) and (43) of IC6651?

Is the voltage at pin (28) of IC6651 at "H" level?

R-ch

YES

Check the line between pins (38)/(40) of IC1301 and pins (14)/(9) of IC6651.

Check the PC5V and PC9V regulator circuits.

Check the line between pins (42)/(43) of IC6651 and pins (18)/(17) of IC2201.

Is there the sub-carrier input signal (3.58MHz, about 900mVp-p) at pin (45) of IC6651?

Check the line between the emitter of Q5501 and pin (45) of IC6651.

Hi-Fi audio playback failure.

Is there the playback envelope output signal (300mVp-p) at pin (29) of IC6651?

YES

Replace IC6651.

YES

Is there the A-H.SW.P. input signal at pin (27) of IC6651?

Check the A-H.SW.P. signal line between pin (27) of IC6651 and pin (26) of IC2001.

Is the REC AGC ADJ terminal voltage (1.7V) at pin (37) of IC6651 as specified?

YES

Are there the record FM output signals from pin (21) to pin (24) of IC6651 for CH-1, and from pin (21) to pin (22) of IC6651 for CH-2?

YES

Check the connectors AH and MZ.

Replace IC6651.

YES

Is the voltage at pin (29) of IC6651 about 3.7V?

Check the BIAS CTL line.

Is 5V voltage applied at pin (25) of IC6651?

Check the PC5V line.

27DV-S100

27DV-CS10

Page 68

27DV-S100

27DV-CS10

FLOW CHART No. 2-19FLOW CHART No. 2-18

No recording with linear audio signal.

Is there the audio input signal at pin (8) of IC2201?

YES

Is the voltage at pin (99) of IC2201 at "L" level?

YES

Does the bias oscillation circuit function?

YES

Is there the bias signalsuperimposed audio signal at pin (4) of IC2201?

YES

Check the AA-MH harness and the A/C head.

Check the line between pin (61) of IC6651 and pin (8) of IC2201.

Check R6617.

Check the bias oscillation circuit (around T6601 and Q6602).

Check R6623, R6605, R6606 and C6606.

No playback with linear audio signal.

Is there the audio signal (PB EQ) at pin (100) of IC2201?

YES

Is there the audio output signal at pin (11) of IC2201?

YES

Do the MH-AA harness, playback amplifier and its peripheral circuits function?

YES

Is the A/C head dirty?

YES

Is the A/C head height optimally adjusted?

YES

Replace the A/C head.

Readjust the A/C head height.

Is the voltage at pin (99) of IC2201 at "L" level?

Check R6617.

Check the line between pin (11) of IC2201 and pin (62) of IC6651.

Replace IC2201.

Page 69

The disc tray cannot be opened and closed.

FLOW CHART No.3-1

The [No Disc] indication. (In case of focus error)

FLOW CHART No.3-2

TROUBLESHOOTING FLOWCHARTS OF DVD SECTION

Is the signal from the pins(70) and (69) of IC504 input into the pins(1) and (28) of IC7701?

Yes

Is loading motor drive voltage output from the pins(9) and (10) of IC7701?

Yes

Is the loading motor drive voltage applied to the terminal of loading motor?

Yes

Check for mechanism and gear engagement and breakage.

Check the LD-RVS/FWD signal line between IC7701 and the IC504.

Check PC 8V line.

Is 8V voltage applied to the pin(8) of IC7701?

Yes

Replace IC7701.

Check the line between the IC702 and the loading motor.

Does the optical pickup move up and down after the disc is removed? (Checking of symptom.)

Yes

Is FE signal output to the pin(21) of IC301 when the disc is set?

Yes

Is FE signal inputted into the pin(150) of IC701?

Yes

Check or replace IC701.

See FLOW CHART NO.6 <The [No Disc] indication. (In case focus servo does not function.)>

Replace IC301.

Yes

Is there input signal on the pins(52), (53), (54) and (55) of IC301?

Check the connection of optical pickup cable.

Check the line between the IC301 and IC701.

27DV-S100

27DV-CS10

Page 70

FLOW CHART No.3-3

The [No Disc] indication. (In case focus servo does not function.)

FLOW CHART No.3-4

Both picture and sound do not operate normally.(1)

27DV-S100

27DV-CS10

Is the focus control signal output to the pin(158) of IC701?

Yes

Is the focus control signal from the pin(158) of IC701 input into the pin(23) of IC7701?

Yes

Is the focus control drive voltage output from the pins(17) and (18) of IC7701?

Yes

Is the focus control drive voltage applied to the terminal of focus actuator?

Yes

Check the connection of optical pickup cable. If it is normal, replace the traverse chassis unit.

The [No Disc] indication. (When the laser beam does not light.)

Check the crystal oscillator at pin(11) of IC701 and its peripheral circuits.

Check the focus control signal line between the IC7701 and IC701.

Check PC 8V line.

Is 8V voltage applied to the pin(8) of IC7701?

Yes

Check to see if the signal at pin(21) of IC7701 is at "H" level. If not, replace IC7701.

Check the line between the IC7701 and the focus actuator.

FLOW CHART No.3-5

Set the disc on the disc tray.

Yes

Do you have loading done the disk by normality?

Yes

Is the level of RF signal which is output from pins(29), (30) of IC301, normal?

Yes Yes

Replace the main PWB unit.

Yes

See FLOW CHART NO.9 and NO.10.

Check the loading switch.

Check for contamination of objective lens of optical pickup.

Replace traverse chassis unit.

Is the Q303(LD POWER CTL) drive output to the pin(46) of IC301? (Checking of symptom.)

Yes

Is 5V voltage applied to the emitter of Q303?

Yes

Is approx. 2V applied to the pin(3) of the pickup terminal? (See note.)

Yes

Check the connection of optical pickup cable. If it is normal, replace the traverse chassis unit.

Check the line between the pin(46) of IC301 and the base of Q303.

Check the A_5V line.

Check the line between the Q301, Q307 and pickup terminal.

Note: Since the laser diode is very susceptible to static electricity, be careful of static electricity or electricity leak from the measuring equipment when confirming the voltage.

Page 71

YES NO

DVD picture failure

FLOW CHART No. 3-6

YES

Place the disc on the disc tray and play it back.

YES

Check the DVD main unit and DVD mechanism unit.

Is there the playback video signal at pin (1) of connector CN802 on the DVD main unit?

YES

Are there the playback video signals at pins (27), (23) and (25) of IC1001?

Are the signals at pins (7)/(8) and (1)/(3)/(28) of IC1001 at "H" and "5V" levels, respectively?

Check the lines between pins (9), (7) and (5) of connector CA on the DVD sub unit and pins (2), (6) and (4) of IC1001.

YES

Check the lines between pins (27), (23), and (25) of IC1001 and pins (5), (1) and (3) of connector DA.

Check IC1001 and its peripheral circuits.

Are there the playback video signal, luminance signal and chroma signal at pins (5), (1) and (3) of connector DA on the DVD sub unit?

YES

Check the lines between pins (5), (1) and (3) of connector DA and pins (22), (24) and (26) of IC1301.

Are there the playback video signals at pins (22), (24) and (26) of terminal unit IC1301?

YES

Check the lines from IC4401 thru IC1401 to IC8850 of the TV section.

Are there the playback video signals at pins (53), (56) and (58) of IC1301?

YES

Check the lines from pins (33) and (34) of IC1301 to pins (17) and (18) of IC2001.

Are there the I

C clock and data signals

at pins (33) and (34) of IC1301?

YES

Check the PC9V line.

Is the 9V supply voltage applied at pin (42) of IC1301?

Replace IC1301.

DVD sound failure

YES

Place the disc on the disc tray and play it back.

YES

Check the DVD main unit and DVD mechanism unit.

Is there the playback audio signal at pin (6) of connector CN801 on the DVD main unit?

YES

Are there the playback audio signals at pins (1) and (7) of IC1102?

Are there the playback audio signal at pins (7) and (9) of connector DA on the DVD sub unit?

YES

Check the lines from pins (7) and (9) of connector DA to pins (23) and (25) of IC1301.

Are there the playback audio signals at pins (23) and (25) of IC1301 on the terminal unit?

YES

Check the lines between IC3001 and IC3201 of the TV section.

Are there the playback audio signals at pins (52) and (54) of IC1301?

YES

Check the lines from pins (33) and (34) of IC1301 to pins (17) and (18) of IC2001.

Are there the I2C clock and data signals at pins (33) and (34) of IC1301?

YES

Check the PC9V line.

Is the 9V supply voltage applied at pin (42) of IC1301?

Replace IC1301.

YES

FLOW CHART No. 3-7

Are there the playback audio signals at pins (3) and (5) of IC1102?

Check the line from pins (1) and (7) of IC1102 to pins (7) and (9) of connector DA.

YES

Are there the playback audio signals at pins (13) and (16) of IC1101?

YES

Is there the playback digital signal at pin (2) of IC1101?

Check the lines from pins (13) and (16) of IC1101 to pins (3) and (5) of IC1102.

YES

Check the line between pin (24) of connector CB and pin (2) of IC1101.

Check IC1101 and its peripheral circuits.

Check IC1102 and its peripheral circuits.

27DV-S100

27DV-CS10

Page 72

27DV-S100 27DV-CS10

CHASSIS LAYOUT

121110987654321

Page 73

27DV-S100 27DV-CS10

IC FUNCTION LIST OF DVD SECTION

IC301 TA1323F RF PROCESSOR

Pin No. Terminal name I/O Operation function

1 GND – GND terminal. – 2 P2TP I TE+input (CD) VrA 3 P2TN I TE–input (CD) VrA 4 LDO2 O Drive ouput 2 – 5 MDI2 I Monitor input 2 – 6 VrD O Digital VREF – Vdd/2 output (1.65V) 7 Vrfil – Filter capacity for reference – 8 Vdd I Power terminal – 3.3V is connected.

9 DPAC – DPD AC combination capacity 1 – 10 DPBD – DPD AC combination capacity 2 – 11 DPD1 – DPD integral capacity 1 – 12 DPD2 – DPD integral capacity 2 – 13 SCB I Control line (Bit clock) 2.2[V] 14 SCL I Control line (Latch signal) 2.2[V] 15 SCD I Control line (Sirial Data) 2.2[V] 16 VRCK I Reference clock input 2.3[V] When frequency is increased, the

17 VCKF – Capacity for VRCK time constant –

adjustment 18 VccP – Power terminal – 19 LVL O Servo addition output VrD/2 20 TEO O TE output VrD 21 FEO O FE output VrD 22 DFTN I DPD difect – Low DPD output: Mute 23 VccS – Power terminal (servo) – 24 NC – – – Used in the open state. 25 RPZ O RF ripple output 2 VrD 26 RPO O RF ripple output 1 VrD/2 27 RPB – RF ripple bottom – 28 RPP – RF ripple peak – 29 RFOn O Equivalent RF output 1.65[V] DC voltage varies by RFS.

(Differential output) 30 RFOp O Equivalent RF output 1.65[V] DC voltage varies by RFS.

(Differential output) 31 VccR – Power terminal (RF) – 32 RFS I RF slice level adjustment – 33 TEB I TE balance VrD When TEB is raised, the gain on the

34 FEB I FE balance VrD When FEB is raised, the gain on the

35 DPDB I Pit depth adjustment VrD When DPDB is raised, the delay

36 Vcc2 – Power terminal – 37 NC – – – Used in the open state. 38 NC – – – Used in the open state. 39 GND2 – GND terminal. – 40 TCC1 I Time constant adjustment – 41 RFDC – DC feedback capacity – 42 VrA O Analog VREF 2.1[V] 43 EQB I Boost adjustment VrD

Terminal DC Voltage(TYP.)

Remarks

filters excepting the servo LPF are shifted to high frequency side.

TP side and the delay amount on the A+C side are increased. Adjusting range: GND - Vdd

A+C (FP) side is increased. Adjusting range: GND - Vdd

amount on the A•B side is increased. Adjusting range: GND - Vdd

When EQB is raised, the boost increases. Adjusting range: GND - Vdd

Page 74

27DV-S100 27DV-CS10

Pin No. Terminal name I/O Operation function

Terminal DC Voltage(TYP.)

Remarks

44 EQF I Frequency adjustment VrD When EQF is raised, shift to the

high frequency side occurs.

Adjusting range: GND - Vdd 45 MDI1 I Monitor input 1 – 46 LDO1 O Drive output 1 – 47 P1TN I TE–input (DVD) VrA 48 P1TP I TE+input (DVD) VrA 49 P1FN I FE–input (DVD) VrA 50 P1FP I FE+input (DVD) VrA 51 LDP1 I APC polarity 1 – Positive polarity when this terminal

is connected to Vcc. 52 P1DI I D input (DVD) VrA 53 P1CI I C input (DVD) VrA 54 P1BI I B input (DVD) VrA 55 P1AI I A input (DVD) VrA 56 GNDR – GND terminal (RF) – 57 LDP2 I APC polarity 2 – Positive polarity when this terminal

is connected to Vcc. 58 P2AI I A input (CD) VrA 59 P2BI I B input (CD) VrA 60 P2CI I C input (CD) VrA 61 P2DI I D input (CD) VrA 62 GNDS – GND terminal (Servo) – 63 P2FP I FE+input (CD) VrA 64 P2FN I FE–input (CD) VrA

• Block Diagram

P1FN P1FP LDP1 P1DI P1CI P1BI P1AI GNDR LDP2 P2AI P2BI P2CI P2DI GNDS P2FP P2FN

P1TP

P1TN

LDO1

MDI1

EQF

EQB

VrA

RFDC

TCC1

GND2NCNC

Vcc2

48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33

APC1

50 51 52 53 54 55 56 57 58 59 60 61 62 63 64

sel-PD

sel-RF

APC2

F-gain Adjust

F-gain

Adjust

T-gain Adjust

R-gain Adjust

mode-IC

sel-FE

sel-TE

sel-DPD

3Beam-TE

creation

sel-LVL

VrA

Vref

RF Ripple

creation

FE creation

DPDB

DPD-TE

creation

FEB

TEB

mode-TE

tcc1 (BUS)

Output

Amp

FE-gain

Adjust

TE-gain

Adjust

Level

detect

TCC1

BUS

DPDB

FEB

Time

constant

adjustment

TEB

32 31 30 29 28 27 26 25 24 23 22 21 20 19 18 17

RFS VccR RFOp RFOn RPP RPB RPO RPZ NC VccS DFTN FEO TEO LVL VccP VCKF

1 2 3 4 5 6 7 8 9

rfil

GND

P2TP

P2TN

LDO2

MDI2

10 11 12 13 14 15 16

DPAC

DPBD

DPD1

DPD2

SCB

SCL

SCD

RCK

Page 75

27DV-S100 27DV-CS10

IC501 IX1689GE FLASH MEMORY

Pin No. Symbol Type Name and function

Byte selection address: When the device is in the x8 mode, the low or high order byte is

45 DQ

25-18, 8-4 A

3-1, 48,

16, 17 during data writing, erasing and lock block operation.

13-A18

15/A-1

0-A12

29, 31, 33, Low order byte data input/output: Command user interface writing cycle data and command 35, 38, 40, DQ

-DQ7Input/Output

42, 44 output disable: Float state

30, 32, 34, 36,

39, 41, 43, 45 data input/output. Operative only in x16 mode. x8 mode: Float state DQ15/A-1 is address.

-DQ14Input/Output

26 CE# Input

12 RP# Input

28 OE# Input

11 WR# Input controlled. In “Low” state WR# becomes active. At rise edge the address and data are

14 WP# Input Blanking to the boot block area and writing actuation can't be executed at the time of

15 RY/BY# Output

47 BYTE# Input the DQ

13 Vpp ——— Write/erase power supply: 5.0 ± 0.5V is applied during writing/erasing. 37 Vcc ——— Device power supply: 5.0 ± 0.5V

27, 46 GND ——— Ground

9, 10 NC ——— Nonconnection

Input selected. It is not used in the x16 mode.

(If BYTE# is high, DQ15/A-1 input circuit does not operate.)

Input

Word selection address: Selection of one word of 16k byte block. These addresses are latched during data wiring operation. Block selection address: Selection of 1/32 erase block. These addresses are latched

input. Various data read memory identifier and status data output Chip nonselection or

High order byte data input/output: The function is the same as that of low order byte

Chip enable: Device control logic, input buffer, decoder and sense amp. are activated. Chip becomes active only when CE# is “Low”. Reset/Power down: If RP# is set to “Low”, the control circuit is initialized when power is turned on. Hence, the RP#pin is set to “Low”. When power is turned on or off or in case of fluctuation it is kept at “Low” so as to protect data from noise. When RP# is in “Low” state, the device is in deep power down state. 480 ns is required to recover from the deep power down state. If the RP# pin becomes “Low”, the whole chip operation is interrupted and reset. After recovery the device is set to array read state. Output enable: When OE# is set to “Low”, data is output from the DQ pin. When OE# is set to “High”, the DQ pin is set to float state. Write enable: Command user interface, data Q register and address Q latch access is

fetched. Write protection: Blanking/writing to the boot block area is input of prohibition control.

WP#=VIL. Ready/busy: The state of internal write state machine is output. In “Low” state it is indicated that the write state machine is in operation. If the write state machine waits for next operation instruction, erase is suspended or it is in deep power down state, the RY/BY# pin is in float state. Byte enable: When BYTE# is set to “Low”, the device is set to the x8 mode. At this time

-DQ15 pin becomes float state. Address A-1 selects high order/low order byte.

When BYTE# is “High”, the device is set to the x16 mode. The A-1 input circuit is disabled.

Page 76

27DV-S100 27DV-CS10

• Block Diagram

-1.0~18

Input

Buffer

ADDRESS

QUEUE

LATCHES

ADDRESS COUNTER

Output

Buffer

Y-DECODER

X-DECODER

8-14

OUTPUT MULTIPLEXER

Block 0

16-KBYTE

Output

Buffer

CSR

ESRs

Data

Comparator

Y GATING/SENSING

Block 1

16-KBYTE

0-7

Input Buffer

DATA

QUEUE

Block 30

16-KBYTE

Block 31

Input

Buffer

I/O Logic

CUIWSM

CE# OE# WR#

RP#

Program Erase Voltage Switch

BYTE#

RY/BY#

V GND

IC502 IX1765GE 4M EDO DRAM

Terminal Terminal name Function

16-19, 22-26 A0-A8 Address inputs.

14 RAS Row address strobe. 28 UCAS Column address strobe/upper byte control. 29 LCAS Column address strobe/lower byte control. 13 WE Write enable. 27 OE Output enable.

2-5, 7-10 DQ

31-34, 36-39

1, 6, 20 VCC +3.3V power supply.

21, 35, 40 VSS 0V ground.

11-12, 15, 30 NC No connection.

• Block Diagram

1-DQ16 Data inputs/outputs.

UCAS

LCAS

RAS

V V

RAS clock

generator

Refresh

counter

A0 A1

A7 A8

Address buffers

and predecoders

CAS clock

generator

X0-X

0-Y8

Data I/O Bus

Column decoders

Sense amplifiers

512 16

Row

decoders

512

WE clock

generator

Memory

array

OE clock

generator

I/O

Buffer

I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 I/O8 I/O9 I/O10 I/O11 I/O12 I/O13 I/O14 I/O15 I/O16

Page 77

27DV-S100 27DV-CS10

IC504 IX1687GE MICRO COM.

• Block Diagram

VccVccVccVccVccVssVssVssVssVssVssVssVssPD

/D PE

Port EPort D

EXTAL XTAL STBY RES WDTOVF NMI

PF7/Ø

/AS

/RD

/HWR

PF3/LWR PF2/

LCAS/WAIT/BFEQO PF1/BACK PF0/BREQ

PG4/CS0 PG3/CS1 PG2/CS2 PG1/CS3 PG0/CAS

P67/CS7/IRQ3 P66/CS6/IRQ2 P65/IRQ1 P64/IRQ0 P63/TEND1 P62/DREQ1 P61/TEND0/CS5 P60/DREQ0/CS4

Port GPort 6 Port F

Clock oscillator

Interruption

controller

ROM

RAM

TPU

PPG

H8S/2000 CPU

DTC

DMAC

WDT

SCI

D/A converter

A/D converter

Internal addressbus

Internal data bus

Bass Controller

Peripheral address bus

Peripheral data bus

Port 5 Port 3 Port C Port B Port A

PA7/A23/IRQ7 PA

/IRQ6

6/A22

PA5/A21/IRQ5 PA4/A20/IRQ4 PA

3/A19

PA2/A

PA1/A

PA0/A

PB7/A

PB6/A

PB5/A

PB4/A

PB3/A

PB2/A

PB1/A

PB0/A

PC7/A

PC6/A

PC5/A

PC4/A

PC3/A

PC2/A

PC1/A

PC0/A

P35/SCK1 P3

/SCK0

/RxD1

/RxD0

/TxD1

/TxD0

P53/ADTRG

Port 1 Port 2 Port 4

ref

AVccAV

/PO0/TIOCA3

/PO1/TIOCB3

/PO2/TIOCC3

/PO3/TIOCD3

/PO4/TIOCA4

/PO5/TIOCB4

/PO6/TIOCA5

/PO8/TIOCA0/DACK0

/PO9/TIOCB0/DACK1

/PO10/TIOCC0/TCLKA

/PO11/TIOCD0/TCLKB

/PO12/TIOCA1

/PO13/TIOCB1/TCLKC

/PO14/TIOCA2

/PO15/TIOCB2/TCLKD

/PO7/TIOCB5

/AN7/DA1

/AN6/DA0

/AN5

/AN4

/AN3

/AN2

/AN1

/AN0

Page 78

IC508 IX1761GE TRACK BUFFER INTERFACE

Pin No. Terminal name I/O Operation function

1 VDD1 Supply Digital power supply +3.3V 2 HADR0 Input CPU Address bus 3 HADR1 Input CPU Address bus 4 HADR2 Input CPU Address bus 5 HADR3 Input CPU Address bus 6 HADR4 Input CPU Address bus 7 HADR5 Input CPU Address bus 8 HADR6 Input CPU Address bus

9 HADR7 Input CPU Address bus 10 VSS Supply Digital GND 11 VDD1 Supply Digital power supply +3.3V 12 HDAT0 In/Output CPU Data bus 13 HDAT1 In/Output CPU Data bus 14 HDAT2 In/Output CPU Data bus 15 HDAT3 In/Output CPU Data bus 16 HDAT4 In/Output CPU Data bus 17 HDAT5 In/Output CPU Data bus 18 HDAT6 In/Output CPU Data bus 19 HDAT7 In/Output CPU Data bus 20 HRD Input CPU Read signal 21 HWR Input CPU write signal 22 HAS Input CPU address strobe 23 HCS1 Input CPU chip select signal 1 (Track Buffer Operation) 24 HCS2 Input CPU chip select signal 2 (bus Voltage Transfer) 25 VSS Supply Digital GND 26 VDD1 Supply Digital power supply +3.3V 27 HWAIT Output CPU wait signal (Open drain) 28 HINT Output CPU interrupt signal (Open drain) 29 VSS Supply Digital GND 30 PDO[0] Output Output DVD/CDdata 31 PDO[1] Output Output DVD/CDdata 32 PDO[2] Output Output DVD/CDdata 33 PDO[3] Output Output DVD/CDdata 34 PDO[4] Output Output DVD/CDdata 35 PDO[5] Output Output DVD/CDdata 36 PDO[6] Output Output DVD/CDdata 37 PDO[7] Output Output DVD/CDdata 38 PDO[8] Output Output DVD/CDdata 39 VSS Supply Digital GND 40 VDD1 Supply Digital power supply +3.3V 41 PSYCO Output Output data selector sync signal 42 PDRQO Output Output data transfer block signal 43 PDCKO Output Output data transfer clock 44 VSS Supply Digital GND 45 VDD2 Supply Digital power supply +5V 46 DVDREQ Input Request signal input 47 PDCKI Input Input data transfer clock 48 PDRQI Input Input data transfer block signal 49 PSYCI Input Input data selector sync signal 50 VSS Supply Digital GND 51 VDD2 Supply Digital power supply +5V

27DV-S100 27DV-CS10

Page 79

27DV-S100 27DV-CS10

Pin No. Terminal name I/O Operation function

52 PDI[8] Output Input DVD/CD data 53 PDI[7] Output Input DVD/CD data 54 PDI[6] Output Input DVD/CD data 55 PDI[5] Output Input DVD/CD data 56 PDI[4] Output Input DVD/CD data 57 PDI[3] Output Input DVD/CD data 58 PDI[2] Output Input DVD/CD data 59 PDI[1] Output Input DVD/CD data 60 PDI[0] Output Input DVD/CD data 61 VSS Supply Digital GND 62 VDD1 Supply Digital power supply +3.3V 63 VSS Supply Digital GND 64 VDD2 Supply Digital power supply +5V 65 5VBUS[7] In/Output CPU bus 5V conversion input/output 66 5VBUS[6] In/Output CPU bus 5V conversion input/output 67 5VBUS[5] In/Output CPU bus 5V conversion input/output 68 5VBUS[4] In/Output CPU bus 5V conversion input/output 69 5VBUS[3] In/Output CPU bus 5V conversion input/output 70 5VBUS[2] In/Output CPU bus 5V conversion input/output 71 5VBUS[1] In/Output CPU bus 5V conversion input/output 72 5VBUS[0] In/Output CPU bus 5V conversion input/output 73 NC – Not Connect 74 NC – Not Connect 75 VSS Supply Digital GND 76 VDD1 Supply Digital power supply +3.3V 77 5VBUFO[B] Output 5V buffer output B 78 5VBUFI[B] Output 5V buffer input B (3.3V input) 79 5VBUFO[A] Output 5V buffer output A 80 5VBUFI[A] Output 5V buffer input A (3.3V input) 81 GPO[3] Output General-purpose output terminal (CPU control) 82 GPO[2] Output General-purpose output terminal (CPU control) 83 GPO[1] Output General-purpose output terminal (CPU control) 84 GPO[0] Output General-purpose output terminal (CPU control) 85 VSS Supply Digital GND 86 VDD1 Supply Digital power supply +3.3V 87 LI[1] Input Gate Input[1] 88 LI[2] Input Gate Input[2] 89 BUFO[C] Output Schmitt trigger buffer output C 90 BUFI[C] Input Schmitt trigger buffer input C 91 BUFO[B] Output Schmitt trigger buffer output B 92 BUFI[B] Input Schmitt trigger buffer input B 93 BUFO[A] Output Schmitt trigger buffer output A 94 BUFI[A] Input Schmitt trigger buffer input A 95 TEST0 Input Test terminal 0 (Normal: Low, Test: Hi) Function 96 TEST1 Input Test terminal 1 (Normal: Low, Test: Hi) RAM 97 TEST2 Input Test terminal 2 (Normal: Low, Test: Hi) Pin 98 NC – Not Connect 99 MRST Input 27MHz Input terminal

100 VSS Supply Digital GND

Page 80

• Block Diagram

VSS

75 74 73 72 71 70 69 68 67 66 65 64 63 62 61 60 59 58 57 56 55 54 53 52 51

5VBUS[0]

5VBUS[1]

5VBUS[2]

5VBUS[3]

5VBUS[4]

5VBUS[5]

5VBUS[6]

VDD2

5VBUS[7]

VSS

VDD1

VSS

PDI[0]

PDI[1]

PDI[2]

PDI[3]

PDI[4]

PDI[5]

PDI[6]

PDI[7]

PDI[8]

27DV-S100 27DV-CS10

VDD2

VDD1

5VBUFO[B]

5VBUFI[B]

5VBUFO[A]

5VBUFI[A]

GPO[3] GPO[2] GPO[1] GPO[0]

VSS

VDD1

LI[1] LI[2]

BUFO[C]

BUFI[C]

BUFO[B]

BUFI[B]

BUFO[A]

BUFI[A]

TEST0 TEST1 TEST2

MRST

VSS

76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100

Interface

GPO

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25

Detect

Memory

CTL

RAM

(4.2Kbyte)

Host

Interface

Error

Detect

IPD

Interface

Timing

Gen.

Interface

OPD

50 49 48 47 46

DVDREQ 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26

VSS

PSYCI

PDRQI

PDCKI

VDD2

VSS PDCKO PDRQO PSYCO

VDD1

VSS

PDO[8] PDO[7] PDO[6] PDO[5] PDO[4] PDO[3] PDO[2] PDO[1] PDO[0]

VSS

HINT

HWAIT

VDD1

HADR0

HADR1

HADR2

HADR3

HADR4

HADR5

HADR6

HADR7

VSS

VDD1

HDAT0

HDAT1

HDAT2

HDAT3

HDAT4

HDAT5

HDAT6

HDAT7

HRD

HWR

HAS

HCS1

HCS2

VSS

Page 81

27DV-S100 27DV-CS10

IC601 IX1720GE AV DECODER

• Terminal description

Name Type Description

Host interface, CD-DSP interface, sub-code interface (32-pin) RESET# ID

STANDBY# ID

IDLE O(p.u.)

HWID ID only. The host interface of the device is set to 8 bits at the low level (GNDP) and 16

HORD ID

HTYPE ID HD[7:0] I/O 8 I.s. of the host data bus. When HWID input is connected to GNDP, only this signal

(HD[7:4]) (r.t.) is defined as the host data signal. When HWID is connected to VDDP, it is used as (HD[3]) (p.u.) an 8 I.s. line of 16-bit data bus. (HD[2:1]) (r.t.) (HD[0]) (p.u.)

HD[11:8] I/O When HWID is connected to VDDP, it is used as a data line 11:8 of the 16-bit host

(HD[11]) (p.d.) data bus. (HD[10:8]) (r.t.)

HD[15:12] I/O(r.t.) data bus. When HWID is connected to GNDP, it is used as a the CD-DSP serial input

CDCLK (HD[12]) I CD-DSP bit clock input CDDAT (HD[13]) I CD-DSP data input CDFRM (HD[14) I CD-DSP LR clock (frame) input CDERR (HD[15]) I CD-DSP data error input

HA[3:0] I HCS# I Host chip select input. Active Low.

HWR# (HR/W#) I the host access.

HRD# (HDS#) I

Reset input (active Low). When shifting from the assert state to deassert state, initialization process of this device is started. Stand-by input (active Low). When asserting with RESET#, all of output pins and bidirectional pins enter the float state, and this device is electrically separated from periphery. All internal operations are stopped and the power consumption is minimized. In the stand-by mode, the contents of SDRAM and setup parameter are not retained. Idle, Init, or Reset state display output (active High). It enters the active state after resetting. Data bus width of the host interface is determined. It can be changed during resetting

bits at the high level (VDDP). When the width is 16 bits (HWID is VDDP), byte order of the host interface data bus is determined. It can be changed during resetting only. The device is set to input/ output m.s. byte HD at [15:8] at the low level (GNDP), and m.s. byte at [7:0] at the high level. When HWID is at the GNDP level, it is connected to GNDP. Protocol of the host bus is determined. It can be changed during resetting only. The device is set to A type at the low level (GNDP) and B type at the high level (VDDP).

When HWID is connected to VDDP, it is used as a data line 15:12 of the 16-bit host

port pin as defined below.

Host address input. The address signal specifying the physical address in this device is input.

Host protocol A type (HTYPE=GNDP): HR/W#. This input determines the direction of

Host protocol B type (HTYPE=VDDP): HWR#. Host write input (active Low). Host protocol A type (HTYPE=GNDP): HDS#. Data strobe input (active Low). \Host protocol B type (HTYPE=VDDP): HRD#. Host read input (active Low).

Glossary

I Input O Output I/O Bidirectional AI Analog input AO Analog output AI/O Analog bidirectional ID Input not synchronized p.u. Terminal internally p.d. Terminal internally

with PCLK pulled up pulled down

r.t. Retained terminal

Page 82

Name Type Description

Host interface, CD-DSP interface, sub-code interface (32-pin)...continued

Host ready output (active High). Use this signal when the stream is transferred via the host bus. External pull-up resistor is required. Prior to transfer of each packet (1

HRDY O(p.d.) packet: length in CodBurstLen bytes), make sure that this signal is in the active state,

and then bit streams of CodBurstLen byte long or shorter can be written on this device consecutively. Interrupt request (active Low). This is deasserted when the host reads the interrupt status register of this device and also when the host masks or resets the interrupt

HIRQ# O(p.u.) using the interrupt mask register.

When HIRQ# is not asserted, it enters the 3-state mode. (External pull-up resistor is required.) Host acknowledge output (active Low). When the protocol is A type, the device asserts this output and notifies the completion of read or write cycle.

HACK# O(p.u.) When this signal is not active, it enters the 3-state mode. (External pull-up resistor is

required.) When the protocol is B type, this signal functions as a wait output signal. If the high-speed host (microcomputer) is used, this signal may not have to be connected.

GPI/O signal (3-pin) GPIO I/O(r.t.)

GPSI I General-purpose input monitored by the DVP micro code. GPSO O(p.d.)

PLL signal (5-pin) GCLK ID 27,000 MHz clock or crystal input for main processor. GCLK1 ID 27,000 MHz master clock input for audio. Normally, this must be connected to GCLK.

XO AO

PLLCFG[1:0] ID Analog video port (7-pin)

CVBS/G/Y (DAC A)

Y/R/V (DAC B)

C/B/U (DAC C)

CVBS/C (DAC D) RSET AI Resistance load for DAC gain adjustment is inserted between GND and DAC. VREF AI Reference voltage for DAC gain adjustment is input.

COSYNC O(p.d.) Digital video port (5-pin)

VCLKx2 I/O(r.t.) Main video clock input or output. 27,000 MHz. VCLK I/O(r.t.) Divided VCLKx2 signal. Used as a qualifier of data and sync signal. HSYNC I/O(r.t.) Horizontal sync bidirectional signal pin. Its polarity and length are programmable. VSYNC I/O(r.t.) Vertical sync bidirectional signal pin. Its polarity and length are programmable. FI I/O(r.t.) Field identification bidirectional signal pin. Its polarity is programmable.

AO For RGB, the G signal is output.

AO For RGB, the R signal is output.

AO For RGB, the B signal is output.

AO The CVBS or C signal is selected and output.

General-purpose bidirectional pin monitored and controlled by the ADP micro code. After resetting, this pin is defined as an input. It can be set by using the ADP command.

General-purpose output controlled by the DVP micro code. After resetting, output from this pin is switched to Low.

Output to crystal connected to GCLK. If the crystal is not used for GCLK, nothing must be connected to XO. PLL configuration input. It can be changed only during resetting. Normally, both pins must be connected to GNDP.

For CVBS, the composite video signal is output.

For YUV, the Y signal is output. For CVBS, the Y signal is output.

For YUV, the V signal is output. For CVBS, the C signal is output.

For YUV, the U signal is output.

Composite sync output. Effective only when the RGB analog output is selected. Otherwise, it is fixed to Low.

27DV-S100 27DV-CS10

Page 83

27DV-S100 27DV-CS10

Name Type Description

Digital audio port (8-pin) AMCLK I/O(p.u.)

S/PDIF (AOUT[3]) O(p.d.)

AOUT[2:0] O(p.d.) AIN I Serial input of PCM stereo audio for ADC. ALRCLK O(p.d.)

ABCLK O(p.d.) DVD-DSP interface (13-pin)

DVDREQ O(p.d.) DVD-DSP data request output (polarity programmable). DVDVALID I DVD-DSP data effective input (polarity programmable). DVDSOS I DVD-DSP data sector start input (polarity programmable). DVDDAT[7:0] I DVD-DSP data input bus. DVDSTRB ID DVD-DSP data bit strobe (clock) input. Polarity programmable. DVDERR I DVD-DSP error input. Polarity programmable. SDRAM interface (35-pin) RAMDAT [15:0] I/O(r.t.) SDRAM bidirectional data bus. RAMADD [11:0] O(p.d.) SDRAM address bus output. RAMRAS# O(p.u.) SDRAM row selection (active Low) output. RAMCAS# O(p.u.) SDRAM column selection (active Low) output. PCLK O(p.d.) SDRAM clock output (same as the internal processing clock). RAMDQM O(p.d.) SDRAM data masking (active High) output. RAMCS0# O(p.u.) SDRAM chip select (active Low) output. Lower 2 Mbyte device. RAMCS1# O(p.u.) SDRAM chip select (active Low) output. Upper 2 Mbyte device. RAMWE# O(p.u.) SDRAM write enable (active Low) output. TEST signal (pin 3) SCNENBL ID Test pin. Normally connected to GNDP. TESTMODE ID Test pin. Normally connected to GNDP. ICEMODE ID Test pin. Normally connected to VDDP. Power signal (49-pin) GNDP S Ground for 3.3V digital power supply. VDDP S 3.3V digital power supply VDDIP S 3.3V digital power supply GNDAAM S Ground for PLL power supply for 3.3V AMCLK generation. VDDAAM S PLL power supply for 3.3V AMCLK generation. GNDC S Ground for 1.8V digital power supply. VDDC S 1.8V digital power supply. GNDA S Ground for PLL power supply for 1.8V internal clock generation. VDDA S PLL power supply for 1.8V internal clock generation. VDDD S Analog power supply for 3.3V video DAC. GNDDAC [D,B,P,S]

S Ground for Analog power supply for 3.3V video DAC.

Audio master clock I/O. Sampling frequency can be selected among 384fs, 256fs, 192fs, and 128fs (programmable). S/PDIF transmitter output. It can be connected to DAC as the fourth audio output (AOUT [3]). After resetting, this pin outputs the low-level signal. Serial output of PCM stereo audio for DAC. After resetting, this pin outputs the lowlevel signal.

LR clock output of AOUT [4:0] and AIN. The square wave is formed with the sampling frequency. The LR polarities are programmable. Bit clock output of AOUT [4:0] and AIN. AOUT is output to this clock in the leading and trailing edges (programmable) and AIN is latched.

Page 84

• Block Diagram

GCLKXOPLLCFG0

GCLK1

VDDC

PLLCFG1

GNDC

AIN

ICEMODE

VREF

GNDDAC_S

GNDDAC_P

RESET

GNDDAC_B

C/B/UDAC_C

Y/R/VDAC_B

VDDD

CVBS/C/DAC_D

CVBS/G/Y/DAC_A

GNDDAC_D

COSYNC

VDDIP

VDDP

GNDPFIHSYNC

VDDP

VSYNC

VCLK

RAMDAT0

RAMDAT15

VDDP

RAMDAT1

RAMDAT14

GNDP

RAMDAT2

RAMDAT13

VDDP

RAMDAT3

RAMDAT12

27DV-S100 27DV-CS10

VDDA

STNDBY#

GNDA

RESET#

SCNENBL

VDDP

VCLKx2

GNDP

TESTMODE

VDDAAM

AMCLK

GNDAAM

S/PDIF/AOUT3

GPIO

VDDP AOUT0 AOUT1 AOUT2

ALRCLK

VDDP ABCLK

VDDC

GPSO GNDC

GPSI

GNDP DVDERR DVDSOS

DVDVALID

DVDSTRB

DVDREQ

DVDDAT0 DVDDAT1 DVDDAT2 DVDDAT3 DVDDAT4 DVDDAT5 DVDDAT6 DVDDAT7

IDLE

130

140

150

160

120

110

100

TOP VIEW

GNDP RAMDAT4 RAMDAT11 VDDP RAMDAT5 RAMDAT10 RAMDAT6 GNDC RAMDAT9 VDDP RAMDAT7 GNDP RAMDAT8 VDDP PCLK GNDP RAMDQM VDDC RAMWE# RAMCAS# RAMRAS# RAMCS1# VDDP RAMCS0# GNDP RAMADD11 RAMADD9 RAMADD10 VDDP RAMADD8 RAMADD0 GNDP RAMADD7 RAMADD1 RAMADD6 RAMADD2 VDDP RAMADD5 RAMADD3 RAMADD4

HWID

HORD

VDDP

HTYPE

HD15/CDERR

GNDP

HD11/TCK

HD12/CDCLK

HD13/CDDAT

HD14/CDFRM

VDDC

GNDC

HD9/TDO

HD10/TMS

HD7

VDDP

HD8/TDI

HD6

HD5

VDDIP

HD4

HD3

HD2

HD1

HD0

HA3

VDDP

HA2

HA1

HA0

HCS#

VDDC

HWR#/HDS#

VDDP

HRDY

GNDC

HIRQ#

HRD#/HDS#

GNDP

HACK#

Page 85

27DV-S100 27DV-CS10

IC602-3 IX3455CE 16M SDRAM

Pin No.

35 CLK Clock The system clock input. All other inputs are referenced to the SDRAM on

34 CKE Clock Enable Controls internal clock signal and when deactivated, the SDRAM will

18 CS Chip Select Command input enable or mask except CLK, CKE and DOM 19 BS Bank Address Select either one of banks during both RAS and CAS activity.

20~24 A0~A10 Address Row Address: RA0~RA10, Column Address: CA0~CA7 27~32

17, 16, 15 RAS, CAS, WE Row Address Strobe, RAS, CAS and WE define the operation.

14, 36 DOML, DOMU Data Input/Output Mask DOM control output buffer in read mode and mask input data in write mode.

2, 3, 5, I/O0~15 Data Input/Output Multiplexed data input/output pin 6, 8, 9, 11, 12, 39, 40, 42, 43, 45, 46, 48, 49

1, 25, 26

4, 7, 10, VCCO/VSSO

13, 38, 41, 44, 47, 50

33, 37 NC No Connection No connection

Terminal Name Name Input Function

the rising edge of CLK.

be one of the states among power down, suspend or self refresh.

Column Address Strobe, Refer function truth table for details. Write Enable

VCC/VSS Power Supply/Ground Power supply for internal circuit and input buffer.

Data Output Power/Ground

Power supply for DO

• Block Diagram

Self Refresh Counter

Refresh

Interval Timer

Address[0:10]

CLK

CKE

BS(A11)

CS RAS CAS

DOMU

DOML

Audio/Self Refresh

Precharge

Row Active

Column Active

State Machine

Refresh Counter

Ref. Addr.[0:11]

Address Register

Burst Length

Counter

512Kx16

Bank 0

Row Decoder

Row Addr. Latch/PredecodeRow Addr. Latch/Predecode

Sense AMP & I/O gates

Column Decoder

Column Addr.

Latch & Counter

Overflow

Column Decoder

Sense AMP & I/O gates

512Kx16

Bank 1

I/O0 I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 I/O8 I/O9 I/O10 I/O11 I/O12

Data Input/Output Buffers

I/O13 I/O14 I/O15

Mode Register Test Mode I/O Control

Page 86

IC701 TC94A03F SERVO/DATA PROCESSOR

Pin No.

Terminal Name In/Output Operation function 3/5V system Remarks 1 ASLCN Output Data slice negative pole output 3V system Analog output terminal 2 ASLCO Output Analog data slice output 3V system Analog output terminal

(Digital slice output enabled at differential input) 3 DVSS – Ground for DAC only – 4 RO Output R-ch output signal 3V system Analog output terminal 5 DVDD – Power supply for DAC only 3V system 6 DVR Output Amplifier reference signal output 3V system Analog input terminal 7 LO Output L-ch output signal 3V system Analog output terminal 8 DVSS – Ground for DAC only – 9 XVSS – Ground for oscillator only –

10 XI Input Crystal oscillation input 3V system Analog input terminal 11 XO Output Crystal oscillation output 3V system Analog output terminal 12 XVDD – Power supply for oscillator only – 13 TESM0 – Test terminal 3V system Connected to GND 14 TESM1 – Test terminal 3V system OPEN 15 TESM2 – Test terminal 3V system Connected to VDD3 16 VDD3 – 3.3V digital power – 17 VSS3 – 3.3V digital ground – 18 VPFC Output Clock PLL system phase/frequency 3V system Analog output terminal

comparative output

19 TEST0 Input Test mode terminal 3V system Connected to VDD3 20 VLPFI Input VCO system filter input for clock PLL 3V system Analog input terminal 21 VLPFO Output VCO system filter output for clock PLL 3V system Analog output terminal 22 VSS3 – 3.3V digital ground – 23 MON0 24 MON1 25 MON2 26 MON3 27 MON4 28 MON5 29 MON6 30 MON7 31 MON8 32 MON9 33 VDD3 – 3.3V digital power – 34 NC 35 NC 36 TEST1 Input Test mode terminal 3V system Connected to VDD3 37 FLGA In/Output General-purpose I/O or flag monitor 5V system 38 FLGB In/Output General-purpose I/O or flag monitor 5V system 39 VSS3 – 3.3V digital ground – 40 /RST Input Reset terminal 5V system Pull-up resistor built in 41 /MA Input Microcomputer address enable signal 5V system Fail-safe terminal 42 /MRD Input Microcomputer data read signal 5V system Fail-safe terminal 43 /MWR Input Microcomputer data write signal 5V system Fail-safe terminal 44 /MCE Input Microcomputer chip enable signal 5V system Fail-safe terminal 45 /MINT Output Microcomputer interrupt signal 5V system Open drain terminal 46 MD0 47 MD1 48 MD2 49 MD3 50 MD4 51 MD5 52 MD6 53 MD7 54 VDD5 – 5V power supply –

Output Test monitor 3V system

––

In/Output Microcomputer data buss 5V system

27DV-S100 27DV-CS10

Page 87

27DV-S100 27DV-CS10

Pin No.

55 NC 56 NC 57 SMCK Output 22M system clock output 5V system 58 VMCK Output Data output system (signal processing 5V system

59 VDD3 – 3.3V digital power supply – 60 PD0 Output DVD/CD data output 5V system 61 VSS5 – 5V ground supply – 62 PD1 63 PD2 64 PD3 65 PD4 66 VSS3 – 3.3V digital ground – 67 PD5 68 PD6 69 PD7 70 PD8 71 /PSYC Output DVD data sector sync signal 5V system 72 /PDRQ Output DVD data transfer block 5V system 73 PDCK Output DVD data transfer block 5V system 74 VDD5 – 5V power supply – 75 TESM3 – Test terminal 5V system Connected to VSS5 76 DIGI Input 1 bit DAC digital IN input 5V system 77 TESM4 – Test terminal 5V system Connected to VDD5 78 VDD3 – 3.3V digital power supply – 79 BA0 80 BA1 81 BA2 82 BA3 83 VSS5 – 5V ground supply – 84 BA4 85 BA5 86 BA6 Output External RAM address output 5V system 87 BA7 88 BA8 89 VDD3 – 3.3V digital power supply – 90 /BOE Output External RAM/OE signal 5V system 91 /BRAS Output External RAM/RAS signal 5V system 92 /BCAS Output External RAM/UCAS signal 5V system 93 /BCASL Output External LCAS/WE signal 5V system 94 /BWE Output External RAM WE signal 5V system 95 VDD5 – 5V power supply – 96 BD0 97 BD1 98 BD2

99 BD3 100 BD4 In/Output External RAM data I/O 5V system 101 BD5 102 BD6 103 BD7 104 BD8 105 VSS3 – 3.3V digital ground – 106 BD9 107 BD10 108 BD11 109 BD12 110 VSS5 – 5V ground supply –

Terminal Name In/Output Operation function 3/5V system Remarks

––

system) clock output

Output DVD/CD data output 5V system

Output External RAM address output 5V system

In/Output External RAM data I/O 5V system

Page 88

Pin No.

Terminal Name In/Output Operation function 3/5V system Remarks 111 BD13 112 BD14 In/Output External RAM data I/O 5V system 113 BD15 114 NC 115 NC 116 VDD3 – 3.3V digital power supply – 117 PLCK In/Output PLL system clock I/O 3V system 118 TESM5 – Test terminal 3V system Connected to GND 119 TESM6 – Test terminal 3V system Connected to GND 120 TESM7 – Test terminal 3V system OPEN 121 TESM8 – Test terminal 3V system OPEN 122 VSS3 – 3.3V digital ground – 123 CFC1 Output VCO frequency control signal 3V system Analog output terminal 124 CFC2 Output VCO frequency control signal 3V system Analog output terminal 125 PPW Output

126 PESV Input Phase comparator offset adjustment signal 3V system Analog input terminal

127 PVSS – Ground for 3.3V PLL system only – 128 PESP Output

129 PDOP1 Output DVD/CD phase control signal 3V system Analog output terminal

130 PDON1 Output DVD/CD phase control signal 3V system Analog output terminal

131 PDOP2 Output DVD/CD phase control signal 3V system Analog output terminal

132 PDON2 Output DVD/CD phase control signal 3V system Analog output terminal

133 LPFN Input Data PLL low-pass filter inversion input 3V system Analog input terminal 134 LPFO Output Data PLL low-pass filter output 3V system Analog output terminal 135 PVREF –

136 VCOREF Input VCO reference 3V system Analog input terminal 137 VCOF Input VCO self-adjusting filter output 3V system Analog input terminal 138 PVDD – Power supply for 3.3V PLL system only – 139 RFOn In/Output Data slice 6-bit DAC output 3V system Analog output terminal

140 TESM9 – Test terminal 3V system OPEN 141 TEST2 Input Test mode terminal 3V system Connected to VDD3 142 RFCD Input CD RF signal input 3V system Analog input terminal

143 RFDVD Input DVD RF signal input 3V system Analog input terminal

144 AVDD – Power supply for 3.3V analog system only – 145 RFCT Input RFRP center voltage output 3V system OPEN

146 RFZI Input RFRP zero cross signal input 3V system Analog input terminal 147 TEZI Input Tracking error signal input 3V system Analog input terminal

148 AWIN Input Active wide PLL control signal input 3V system Analog input terminal 149 AVSS – Ground for 3.3V analog system only – 150 FEI Input Focus error signal input 3V system Analog input terminal 151 TEI Input Tracking error signal input 3V system Analog input terminal 152 LVL Input RF level or sub beam signal add input 3V system Analog input terminal 153 RFRP Input RFRP signal input 3V system Analog input terminal 154 AVSS – Ground for 3.3V analog system only – 155 TESM10 – Test terminal 3V system Connected to VREF

––

Phase comparator offset adjustment voltage output

input

Phase comparator offset adjustment signal output

(positive polarity)

(negative polarity)

(positive polarity)

(negative polarity)

Reference power supply for data PLL system only

(RFOn input enabled at differential input)

(RFOp input enabled at differential input)

(zero cross import)

3V system Analog output terminal

3V system

27DV-S100 27DV-CS10

Page 89

27DV-S100 27DV-CS10

Pin No.

156 EXTAD Input General-purpose external ADC input 3V system Analog input terminal 157 VREF – Reference power supply for analog system 3V system

158 FOO Output Focus EQ output 3V system Analog output terminal 159 TRO Output Tracking EQ output 3V system Analog output terminal 160 AVDD – Power supply for 3.3V analog system only – 161 AWCTL Output Active wide PLL control output 3V system Analog output terminal 162 FMO Output Feed EQ output 3V system Analog output terminal 163 DMO Output Disc EQ output 3V system Analog output terminal 164 TEBC Output Tracking balance control signal 3V system Analog output terminal 165 FEBC Output Focus balance control signal 3V system Analog output terminal 166 DPDC Output 167 EQBC Output RF wide boost adjustment signal 3V system Analog output terminal 168 ANMON Output General-purpose PWM output 3V system Analog output terminal 169 /DFCT Output Black dot detection signal 3V system 170 VRCK Output RF EQ property control clock 3V system 171 VSS3 – 3.3V digital ground – 172 SCD Output Head amplifier serial data 173 SCL Output Head amplifier serial data latch pulse 3V system 174 SCB Output Head amplifier serial data clock 3V system 175 FGIN Input Disc FG signal input 3V system Feedback resistor

176 ASLCP Output Data slice positive pole output 3V system Analog output terminal

Terminal Name In/Output Operation function 3/5V system Remarks

only: 1.65V

DPD error signal/pit depth adjustment signal

3V system Analog output terminal

(with self-bias circuit) Analog input terminal

Note) Terminals with "/" at the beginning of their names are active "L" ones.

• Block Diagram

to Driver, RFamp

DAC

Servo

Control

Micom BUS

Syndrome

operation

Servo signal from RFamp

RF signal from RFamp

Data

Slicer

DAC I/F

DEQADC

Digital Servo

Slice level Gen.

Digital

ECC

1bit DAC

for

CD-DA

Analog

out

Clock

PLL

Micom

I/F

Output

I/F

to Micom

to DECORDER

PLL

to RFamp

SYNC Det.

Demodulation

DRAM

I/F

to DRAM

Page 90

IC702 IX3420CE 4M EDO DRAM

Terminal Terminal name Function

16-19, 22-26 A0-A8 Address inputs.

14 RAS Row address strobe. 28 UCAS Column address strobe/upper byte control. 29 LCAS Column address strobe/lower byte control. 13 WE Write enable. 27 OE Output enable.

2-5, 7-10 DQ

31-34, 36-39

1, 6, 20 VCC +3.3V power supply.

21, 35, 40 VSS 0V ground.

11-12, 15, 30 NC No connection.

• Block Diagram

UCAS

LCAS

A0 A1

A7 A8

1-DQ16 Data inputs/outputs.

RAS

V V

RAS clock

generator

Refresh counter

Address buffers

and predecoders

CAS clock

generator

X0-X

0-Y8

Row

decoders

WE clock

generator

Data I/O Bus

Column decoders

Sense amplifiers

512 16

Memory

array

512

OE clock generator

I/O

Buffer

I/O1 I/O2 I/O3 I/O4 I/O5 I/O6 I/O7 I/O8 I/O9 I/O10 I/O11 I/O12 I/O13 I/O14 I/O15 I/O16

27DV-S100 27DV-CS10

Page 91

27DV-S100 27DV-CS10

IC1101 PCM1737 AUDIO DAC

Pin No. Terminal name I/O Operation function

1 LRCK I LRCK clock input (fs) 2 DATA I Audio • Data input 3 BCK I Bit clock input for data. 4 CLKO O System clock buffered output. 5 SCLK I System clock input. 6 DGND – Digital ground. 7VDD – Digital power supply +3.3V 8 TEST1 I Test pin 9 TEST2 I Test pin

(2)

(Open or ground)

(2)

(Open or ground) 10 VCCR – Rch, Analog power supply +5V 11 AGNDR – Analog ground, Rch 12 VCOMR – Rch Analog output amp. • common 13 VOUTR O Rch Analog voltage output. 14 AGND – Analog • ground 15 VCC – Analog power supply +5V 16 VOUTL O Lch Analog voltage output 17 VCOML – Lch Analog output amp • common 18 AGNDL – Analog ground, Lch 19 VCCL – Lch, Analog power supply +5V 20 NA I Not connected. 21 NA I Not connected. 22 RST I

Reset 23 ZEROL O Lch, Zero data • flug 24 ZEROR O Rch, Zero data • flug 25 MDO O Mode control, data output 26 MDI I Mode control, data input 27 MC I Mode clock 28 ML I Mode latch

(2)

(1)

(3)

(2)

Note: (1) Schmidt trigger input, 5V logic input possible. (2) Schmidt trigger input pull-down resistor. 5V logic input possible. (3) Try state output

• Block Diagram

BCK

LRCK

DATA

TEST1 TEST2

RST

MDI

MDO

NA NA

SCLK

Sirial

I/F

Function

Control

Clock

Manager

Oversampling

Dijital Filter

Controller

System Clock

x8 (x4)

Mulcher

Function

Mulcher Level

Data-Sigma

Zero detection

Modulator

DAC

CR LPF

Output Amp

CR LPF

Output Amp

Power Supply.

OUT

COM

OUT

COM

CLKO

ZEROL

ZEROR

DGND

AGND

AGNDL

GNDR

Page 92

27DV-S100 27DV-CS10

IC7701 BA5984FP MOTOR DRIVER

Pin No. T erminal name

1 LD-FWD Loading driver FWD input terminal 15 V04(+) Driver CH4 Negative output 2 SL_IN(+) 3 SL_IN(-) 4 SLOUT 5 SP_IN(+) 6 SP_IN(-) 7 SP_OUT

CH1 Former stage amplifier nonreverse input terminal CH1 Former stage amplifier reverse input terminal CH1 Former stage amplifier output terminal CH2 Former stage amplifier nonreverse input terminal CH2 Former stage amplifier reverse input terminal

CH2 Former stage amplifier output terminal 8 VCC Power terminal 22 FO_OUT 9 LD(-) Loading driver Negative output 23 FO_IN(-)

10 LD(+) Loading driver Positive output 24 FO_IN(+) 11 SPIN(-) Driver CH2 Negative output 25 TR_OUT 12 SPIN(+) Driver CH2 Positive output 26 TR_IN(-) 13 SL(-) Driver CH1 Negative output 27 TR_IN(+) 14 SL(+) Driver CH1 Positive output 28 REV Loading driver REV input terminal

Note 1: Positive and negative output the driver have polarity with respect to input. (An example: 4 pin terminal voltage

‘HIGH’: 14 pin terminal voltage ‘HIGH’)

• Block Diagram

Operation function

Pin No. Terminal name

Operation function

16 V04(-) Driver CH4 Positive output 17 V03(+) Driver CH3 Negative output 18 V03(-) Driver CH3 Positive output 19 GND Ground terminal 20 BIAS Bias input terminal 21 MUTE Mute control terminal

CH3 Former stage amplifier output terminal CH3 Former stage amplifier reverse input terminal CH3 Former stage amplifier nonreverse input terminal CH4 Former stage amplifier output terminal CH4 Former stage amplifier reverse input terminal CH4 Former stage amplifier nonreverse input terminal

28 27 26 25 24 23 22 21 20 19 18 17 16 15

Loading Driver

REV OUTF

FWD OUTR

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

10K

MUTE

10K

16K

10K

16K

VCC

10K 10K 10K

10K

- +

Level

Shift

Level

Shift

- +

10K

- +

Level

Shift

Level

Shift

- +

10K

Page 93

27DV-S100 27DV-CS10

BLOCK DIAGRAM OF TV SECTION

121110987654321

Page 94

27DV-S100 27DV-CS10

BLOCK DIAGRAM OF VCR SECTION

OVERALL BLOCK DIAGRAM

121110987654321

Page 95

27DV-S100 27DV-CS10

BLOCK DIAGRAM OF VCR SECTION

SERVO PROCESS BLOCK DIAGRAM

121110987654321

Page 96

27DV-S100 27DV-CS10

BLOCK DIAGRAM OF VCR SECTION

SYSTEM CONTROL BLOCK DIAGRAM

654321

100

Page 97

BLOCK DIAGRAM OF VCR SECTION

SAFETY DEVICE BLOCK DIAGRAM

27DV-S100 27DV-CS10

654321

101

Page 98

27DV-S100 27DV-CS10

BLOCK DIAGRAM OF VCR SECTION

VIDEO SIGNAL FLOW AND LINEAR AUDIO FLOW BLOCK DIAGRAM

121110987654321

102

103

Page 99

27DV-S100 27DV-CS10

BLOCK DIAGRAM OF VCR SECTION

Hi-Fi AUDIO BLOCK DIAGRAM

121110987654321

104

105

Page 100

27DV-S100 27DV-CS10

BLOCK DIAGRAM OF DVD SECTION

121110987654321

106

107

SHARP 27DVS100 Service Manual

Specifications and Main Features

Frequently Asked Questions

User Manual