Symphonic SSF420TR Schematic

SERVICE MANUAL

Sec. 1: Main Section

I Specifications I Preparation for Servicing I Adjustment Procedures I Schematic Diagrams I CBA’s I Exploded views I Parts List

20" COLOR TV/DVD/VCR

Sec. 2: Deck Mechanism Section

I Standard Maintenance I Alignment for Mechanism I Disassembly/Assembly of Mechanism I Alignment Procedures of Mechanism I Deck Exploded Views I Deck Parts List

SSF420TR

IMPORTANT SAFETY NOTICE

Proper service and repair is important to the safe, reliable operation of all Funai Equipment. The service procedures recommended by Funai and described in this service manual are effective methods of performing service operations. Some of these service special tools should be used when and as recommended.

It is important to note that this service manual contains various CAUTIONS and NOTICES which should be carefully read in order to minimize the risk of personal injury to service personnel. The possibility exists that improper service methods may damage the equipment. It also is important to understand that these CAUTIONS and NOTICES ARE NOT EXHAUSTIVE. Funai could not possibly know, evaluate and advice the service trade of all conceivable ways in which service might be done or of the possible hazardous consequences of each way. Consequently, Funai has not undertaken any such broad evaluation. Accordingly, a servicer who uses a service procedure or tool which is not recommended by Funai must first use all precautions thoroughly so that neither his safety nor the safe operation of the equipment will be jeopardized by the service method selected.

Manufactured under license from Dolby Laboratories. "Dolby" and the double-D symbol are trademarks of Dolby Laboratories.

MAIN SECTION

20" COLOR TV/DVD/VCR

SSF420TR

Sec. 1: Main Section

I Specifications I Preparation for Servicing I Adjustment Procedures I Schematic Diagrams I CBA’s I Exploded views I Parts List

TABLE OF CONTENTS

Specifications. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-1-1

Laser Beam Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-2-1

Important Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3-1

Standard Notes for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4-1

Preparation for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5-1

Cabinet Disassembly Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-6-1

Electrical Adjustment Instructions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-7-1

Firmware Renewal Mode . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-8-1

Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9-1

Schematic Diagrams / CBA’s and Test Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-10-1

Waveforms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-1

Wiring Diagrams < TV/VCR Section > . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-1

Wiring Diagrams < DVD Section >. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-12-2

System Control Timing Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-13-1

IC Pin Function Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-14-1

Lead Identifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-15-1

Exploded Views . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-16-1

Mechanical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-17-1

Electrical Parts List . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-18-1

SPECIFICATIONS

*ˆMode---------SP mode unless otherwise specified *Test input terminal

<Except Tuner>-------------Video input (1Vp-p) Audio input (-10dB) <Tuner>-----------------------Ant. input (80dBµV) Video: 87.5% Audio: 25kHz dev (1kHz Sin)

Description Condition Unit Nominal Limit

1. Over Scan — % 90 5

2. Linearity

3. High Voltage — kV 27 —

Horizontal % — ±18

Vertic al % — ±10

Description Condition Unit Nominal Limit

Center m/m — 0.4

1. Misconvergence

2. Tint Control Range — deg ±30 —

3. Contrast Control Range — dB 6 2

4. Brightness (100% White Full Field) Contrast: Max ft-L 40 24

5. Color Temperature — K 9200 —

Corner m/m — 2.5

Side m/m — 1.5

<DVD>

Description Condition Unit Nominal Limit

1. Horizontal Resolution (TDV-540 TIT.2 CHP.16) — Line 350 330

2. Video S/N at CN3400 (TDV-540 TIT.2 CHP.6) — dB 60 55

3. S/N Chroma at CN3400 AM — dB 58 53

(TDV-540 TIT.2 CHP.17) PM — dB 58 53

4. Audio Distortion (LPCM 48 kHz, W/LPF) (PTD 1-NOR TIT.1 CHP.1)

5. Audio freq. response (LPCM 48kHz) (PTD 1-NOR TIT.1 CHP.5 -- 10)

6. Audio S/N (LPCM 48KHz,W/LPF,A-WTD) (PTD 1-NOR TIT.1 CHP.1 -- 2)

L, 20 Hz

R, 20 Hz

L, 20 kHz

R, 20 kHz

1-1-1 T1000SP

dB 0 +4/-5

dB 85 75

0.03

0.07

<VCR>

Description Condition Unit Nominal Limit

1. Horizontal Resolution (R/P, SP) Line 230 200

2. Jitter (Low) (R/P, SP) µS0.1 0.2

3. S/N Chroma AM(SP) (R/P, SP) dB 38 33

PM(SP) (R/P, SP) dB 38 33

4. Wow & Flutter (JIS, UNWTD) (R/P, SP) % 0.25 0.5

<TUNER>

Description Condition Unit Nominal Limit

1. Video S/N (80dBµV, TV4ch) — dB 45 40

2. Audio S/N (W/LPF) — dB 45 40

All items are measured across 8Ω resistor at speaker output terminal.

Description Condition Unit Nominal Limit

1. Audio Output Power (R/P, SP) W 1.0 0.8

2. Audio S/N (W/LPF) (R/P, SP) dB 40 36

3. Audio distortion (W/LPF,-10dB 1kHz IN) (R/P, SP) % 3.0 5.0

4. Audio Freq. Response (-10dB 1kHz IN) 200 Hz (R/P, SP) dB -2.0 -2.0±5.0

8 kHz (R/P, SP) dB 0 0±6.0

<Hi-Fi AUDIO>

Description Condition Unit Nominal Limit

1. Output Level (-10dB 1kHz IN) (R/P, SP) dB -8.0 -8±4

2. Audio Distortion (-10dB 1kHz IN) (R/P, SP) % 0.5 1.0

3. Freq. Response (-15dB 1kHz IN) 20 Hz (R/P, SP) dB 0 ±4

20 kHz (R/P, SP) dB 0 ±4

Note: Nominal specifications represent the design specifications. All units should be able to approximate these. Some will exceed and some may drop slightly below these specifications. Limit specifications represent the absolute worst condition that still might be considered acceptable. In no case should a unit fail to meet limit specifications.

1-1-2 T1000SP

LASER BEAM SAFETY PRECAUTIONS

This DVD player uses a pickup that emits a laser beam.

Do not look directly at the laser beam coming from the pickup or allow it to strike against your skin.

The laser beam is emitted from the location shown in the figure. When checking the laser diode, be sure to keep your eyes at least 30cm away from the pickup lens when the diode is turned on. Do not look directly at the laser beam.

Caution: Use of controls and adjustments, or doing procedures other than those specified herein, may result in hazardous radiation exposure.

Drive Mecha Assembly

Laser Beam Radiation

Laser Pickup

Turntable

WHEN OPEN. DO NOT

CAUTION

LASER RADIATION

STARE INTO BEAM.

Location: Top of DVD mechanism.

1-2-1 E5_LASER

IMPORTANT SAFETY PRECAUTIONS

Prior to shipment from the factory, our products are strictly inspected for recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.

Safety Precautions for TV Circuit

1. Before returning an instrument to the custom-

er, always make a safety check of the entire instru-

ment, including, but not limited to, the following items:

a. Be sure that no built-in protective devices are de-

fective and have been defeated during servicing. (1) Protective shields are provided on this chassis to protect both the technician and the customer. Correctly replace all missing protective shields, including any removed for servicing convenience. (2) When reinstalling the chassis and/or other assembly in the cabinet, be sure to put back in place all protective devices, including but not limited to, nonmetallic control knobs, insulating fishpapers, adjustment and compartment covers/shields, and isolation resistor/capacitor networks. Do not oper-

ate this instrument or permit it to be operated without all protective devices correctly installed and functioning. Servicers who defeat safety features or fail to perform safety checks may be liable for any resulting damage.

b. Be sure that there are no cabinet openings through

which an adult or child might be able to insert their fingers and contact a hazardous voltage. Such openings include, but are not limited to, (1) spacing between the picture tube and the cabinet mask, (2) excessively wide cabinet ventilation slots, and (3) an improperly fitted and/or incorrectly secured cabinet back cover.

c. Antenna Cold Check - With the instrument AC

plug removed from any AC source, connect an electrical jumper across the two AC plug prongs. Place the instrument AC switch in the on position. Connect one lead of an ohmmeter to the AC plug prongs tied together and touch the other ohmmeter lead in turn to each tuner antenna input exposed terminal screw and, if applicable, to the coaxial connector. If the measured resistance is less than 1.0 megohm or greater than 5.2 megohm, an abnormality exists that must be corrected before the instrument is returned to the customer. Repeat this test with the instrument AC switch in the off position.

d. Leakage Current Hot Check - With the instru-

ment completely reassembled, plug the AC line cord directly into a 120V AC outlet. (Do not use an isolation transformer during this test.) Use a leak-

age current tester or a metering system that complies with American National Standards Institute (ANSI) C101.1 Leakage Current for Appliances and Underwriters Laboratories (UL) 1410, (50.7). With the instrument AC switch first in the on position and then in the off position, measure from a known earth ground (metal water pipe, conduit, etc.) to all exposed metal parts of the instrument (antennas, handle brackets, metal cabinet, screw heads, metallic overlays, control shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must not exceed 0.5 milli-ampere. Reverse the instrument power cord plug in the outlet and repeat the test.

READING SHOULD NOT BE ABOVE 0.5 mA

LEAKAGE

DEVICE

BEING

TESTED

TEST ALL EXPOSED

METAL SURFACES

ALSO TEST WITH PLUG REVERSED USING AC ADAPTER PLUG

AS REQUIRED

CURRENT

TESTER

EARTH GROUND

ANY MEASUREMENTS NOT WITHIN THE LIMITS SPECIFIED HEREIN INDICATE A POTENTIAL SHOCK HAZARD THAT MUST BE ELIMINATED BEFORE RETURNING THE INSTRUMENT TO THE CUSTOMER OR BEFORE CONNECTING THE ANTENNA OR ACCESSORIES.

e. X-Radiation and High Voltage Limits - Because

the picture tube is the primary potential source of X-radiation in solid-state TV receivers, it is specially constructed to prohibit X-radiation emissions. For continued X-radiation protection, the replacement picture tube must be the same type as the original. Also, because the picture tube shields and mounting hardware perform an X-radiation protection function, they must be correctly in place. High voltage must be measured each time servic-

1-3-1 TD204IMP

ing is performed that involves B+, horizontal deflection or high voltage. Correct operation of the X-radiation protection circuits also must be reconfirmed each time they are serviced. (X-radiation protection circuits also may be called "horizontal disable" or "hold down.") Read and apply the high voltage limits and, if the chassis is so equipped, the X-radiation protection circuit specifications given on instrument labels and in the Product Safety & X-Radiation Warning note on the service data chassis schematic. High voltage is maintained within specified limits by close tolerance safety-related components/adjustments in the high-voltage circuit. If high voltage exceeds specified limits, check each component specified on the chassis schematic and take corrective action.

2. Read and comply with all caution and safety-related notes on or inside the receiver cabinet, on the receiver chassis, or on the picture tube.

3. Design Alteration Warning - Do not alter or add to the mechanical or electrical design of this TV receiver. Design alterations and additions, including, but not limited to circuit modifications and the addition of items such as auxiliary audio and/or video output connections, might alter the safety characteristics of this receiver and create a hazard to the user. Any design alterations or additions will void the manufacturer's warranty and may make you, the servicer, responsible for personal injury or property damage resulting therefrom.

4. Picture Tube Implosion Protection Warning -

The picture tube in this receiver employs integral implosion protection. For continued implosion protection, replace the picture tube only with one of the same type number. Do not remove, install, or otherwise handle the picture tube in any manner without first putting on shatterproof goggles equipped with side shields. People not so equipped must be kept safely away while picture tubes are handled. Keep the picture tube away from your body. Do not handle the picture tube by its neck. Some "in-line" picture tubes are equipped with a permanently attached deflection yoke; because of potential hazard, do not try to remove such "permanently attached" yokes from the picture tube.

5. Hot Chassis Warning -

a. Some TV receiver chassis are electrically connect-

ed directly to one conductor of the AC power cord and may be safety-serviced without an isolation transformer only if the AC power plug is inserted so that the chassis is connected to the ground side of the AC power source. To confirm that the AC power plug is inserted correctly, with an AC voltmeter, measure between the chassis and a known

earth ground. If a voltage reading in excess of 1.0V is obtained, remove and reinsert the AC power plug in the opposite polarity and again measure the voltage potential between the chassis and a known earth ground.

b. Some TV receiver chassis normally have 85V

AC(RMS) between chassis and earth ground regardless of the AC plug polarity. This chassis can be safety-serviced only with an isolation transformer inserted in the power line between the receiver and the AC power source, for both personnel and test equipment protection.

c. Some TV receiver chassis have a secondary

ground system in addition to the main chassis ground. This secondary ground system is not isolated from the AC power line. The two ground systems are electrically separated by insulation material that must not be defeated or altered.

6. Observe original lead dress. Take extra care to assure correct lead dress in the following areas: a. near sharp edges, b. near thermally hot parts be sure that leads and components do not touch thermally hot parts, c. the AC supply, d. high voltage, and e. antenna wiring. Always inspect in all areas for pinched, out of place, or frayed wiring. Check AC power cord for damage.

7. Components, parts, and/or wiring that appear to have overheated or are otherwise damaged should be replaced with components, parts, or wiring that meet original specifications. Additionally, determine the cause of overheating and/or damage and, if necessary, take corrective action to remove any potential safety hazard.

8. Product Safety Notice - Some electrical and mechanical parts have special safety-related characteristics which are often not evident from visual inspection, nor can the protection they give necessarily be obtained by replacing them with components rated for higher voltage, wattage, etc.. Parts that have special safety characteristics are identified by a ( # ) on schematics and in parts lists. Use of a substitute replacement that does not have the same safety characteristics as the recommended replacement part might create shock, fire, and/or other hazards. The Product's Safety is under review continuously and new instructions are issued whenever appropriate. Prior to shipment from the factory, our products are strictly inspected to confirm with the recognized product safety and electrical codes of the countries in which they are to be sold. However, in order to maintain such compliance, it is equally important to implement the following precautions when a set is being serviced.

1-3-2 TD204IMP

Precautions during Servicing

A. Parts identified by the ( # ) symbol are critical for

safety. Replace only with part number specified.

B. In addition to safety, other parts and assemblies

are specified for conformance with regulations applying to spurious radiation. These must also be replaced only with specified replacements.

Examples: RF converters, RF cables, noise blocking capacitors, and noise blocking filters, etc.

C. Use specified internal wiring. Note especially:

1) Wires covered with PVC tubing

2) Double insulated wires

3) High voltage leads D. Use specified insulating materials for hazardous

live parts. Note especially:

1) Insulation Tape

2) PVC tubing

3) Spacers

4) Insulators for transistors. E. When replacing AC primary side components

(transformers, power cord, etc.), wrap ends of wires securely about the terminals before soldering.

F. Observe that the wires do not contact heat produc-

ing parts (heatsinks, oxide metal film resistors, fusible resistors, etc.)

G. Check that replaced wires do not contact sharp

edged or pointed parts.

H. When a power cord has been replaced, check that

5~6 kg of force in any direction will not loosen it.

I. Also check areas surrounding repaired locations. J. Be careful that foreign objects (screws, solder

droplets, etc.) do not remain inside the set.

K. Crimp type wire connector

When replacing the power transformer in sets where the connections between the power cord and power transformer primary lead wires are performed using crimp type connectors, in order to prevent shock hazards, perform carefully and precisely the following steps.

Replacement procedure

1) Remove the old connector by cutting the wires at a point close to the connector.

Important: Do not re-use a connector (discard it).

2) Strip about 15 mm of the insulation from the ends of the wires. If the wires are stranded, twist the strands to avoid frayed conductors.

3) Align the lengths of the wires to be connected. Insert the wires fully into the connector.

4) Use the crimping tool to crimp the metal sleeve at the center position. Be sure to crimp fully to the complete closure of the tool.

L. When connecting or disconnecting the TV/DVD

connectors, first, disconnect the AC plug from AC supply socket.

1-3-3 TD204IMP

Safety Check after Servicing

Examine the area surrounding the repaired location for damage or deterioration. Observe that screws, parts and wires have been returned to original positions. Afterwards, perform the following tests and confirm the specified values in order to verify compliance with safety standards.

1. Clearance Distance

When replacing primary circuit components, confirm specified clearance distance (d) and (d') between soldered terminals, and between terminals and surrounding metallic parts. (See Fig. 1)

Table 1: Ratings for selected area

Chassis or Secondary Conductor

Primary Circuit Terminals

dd’

AC Line Voltage Region

110 to 130 V

Note: This table is unofficial and for reference only. Be sure to confirm the precise values.

USA or

CANADA

Clearance

Distance (d), (d')

≥ 3.2 mm

(0.126 inches)

2. Leakage Current Test

Confirm the specified (or lower) leakage current between B (earth ground, power cord plug prongs) and externally exposed accessible parts (RF terminals, antenna terminals, video and audio input and output terminals, microphone jacks, earphone jacks, etc.).

Measuring Method: (Power ON)

Insert load Z between B (earth ground, power cord plug prongs) and exposed accessible parts. Use an AC voltmeter to measure across both terminals of load Z. See Fig. 2 and following table.

Table 2: Leakage current ratings for selected areas

Exposed Accessible Part

One side of

Power Cord Plug Prongs

Fig. 1

AC Voltmeter (High Impedance)

Fig. 2

AC Line Voltage Region Load Z Leakage Current (i) Earth Ground (B) to:

110 to 130 V

Note: This table is unofficial and for reference only. Be sure to confirm the precise values.

USA or

CANADA

0.15µF CAP. & 1.5kΩ RES. connected in

parallel

1-3-4 TD204IMP

i≤0.5mA rms

Exposed accessible

parts

STANDARD NOTES FOR SERVICING

Circuit Board Indications

1. The output pin of the 3 pin Regulator ICs is indicated as shown:

Top View

Out

2. For other ICs, pin 1 and every 5th pin is indicated as shown:

Pin 1

3. The 1st pin of every pin connector are indicated as shown:

Pin 1

Input

Bottom View

Instructions for Connectors

1. When you connect or disconnect FFC cable (connector), be sure to disconnect the AC cord.

2. FFC cable (connector) should be inserted parallel into the connector, not at an angle.

FFC Cable

Connector

CBA

* Be careful to avoid a short circuit.

[ CBA= Circuit Board Assembly ]

Pb (Lead) Free Solder

Pb free mark will be found on PCBs which use Pb free solder. (Refer to figure.) For PCBs with Pb free mark, be sure to use Pb free solder. For PCBs without Pb free mark, use standard solder.

Pb free mark

How to Remove / Install Flat Pack IC

Caution:

1. The Flat Pack-IC shape may differ by models. Use an appropriate hot-air flat pack-IC desoldering machine, whose shape matches that of the Flat Pack-IC.

2. Do not apply the hot air to the chip parts around the Flat Pack-IC for over 6 seconds as damage may occur to the chip parts. Put Masking Tape around the Flat Pack-IC to protect other parts from damage. (Fig. S-1-2)

3. The Flat Pack-IC on the CBA is affixed with glue, so be careful not to break or damage the foil of each pin or solder lands under the IC when removing it.

1. Removal

With Hot - Air Flat Pack - IC Desoldering Machine:

a. Prepare the Hot - Air Flat Pack - IC Desoldering

Machine, then apply hot air to Flat Pack - IC (about 5~6 seconds). (Fig. S-1-1)

b. Remove the Flat Pack- IC with tweezers while

applying the hot air.

With Soldering Iron:

a. Using desoldering braid, remove the solder from all

pins of the Flat Pack - IC. When you use solder flux which is applied to all pins of the Flat Pack - IC, you can remove it easily. (Fig. S-1-3)

b. Lift each lead of the Flat Pack - IC upward one by

one, using a sharp pin or wire to which solder will not adhere (iron wire). When heating the pins, use a fine tip soldering iron or a hot air Desoldering Machine. (Fig. S-1-4)

With Iron Wire:

a. Using desoldering braid, remove the solder from all

pins of the Flat Pack - IC. When you use solder flux which is applied to all pins of the Flat Pack - IC, you can remove it easily. (Fig. S-1-3)

1-4-1 X5SNOTE

b. Affix the wire to a workbench or solid mounting

point, as shown in Fig. S-1-5.

c. Pull up on the wire as the solder melts so as to lift

the IC leads from the CBA contact pads, while heating the pins using a fine tip soldering iron or hot air blower.

Note:

When using a soldering iron, care must be taken to ensure that the Flat Pack - IC is not being held by glue, or when it is removed from the CBA, it may be damaged if force is used.

2. Installation

a. Using desoldering braid, remove the solder from

the foil of each pin of the Flat Pack - IC on the CBA, so you can install a replacement Flat Pack - IC more easily.

b. The "I" mark on the Flat Pack - IC indicates pin 1

(See Fig. S-1-6). Make sure this mark matches the 1 on the CBA when positioning for installation. Then pre - solder the four corners of the Flat PackIC (See Fig. S-1-7).

c. Solder all pins of the Flat Pack - IC. Make sure that

none of the pins have solder bridges.

Flat Pack-IC

Fine Tip Soldering Iron

Desoldering Braid

Soldering Iron

Fig. S-1-3

Sharp Pin

Fig. S-1-4

CBA

Masking Tape

Tweezers

Hot Air Blower

Iron Wire

Fig. S-1-1

Soldering Iron

To Solid Mounting Point

Fig. S-1-5

Hot-air Flat Pack-IC Desoldering Machine

Flat Pack-IC

Fig. S-1-2

1-4-2 X5SNOTE

Example :

Instructions for Handling Semiconductors

Electrostatic breakdown of the semiconductors may occur due to a potential difference caused by electrostatic charge during unpacking or repair work.

Ground for Human Body

Be sure to wear a grounding band (1MΩ) that is properly grounded to remove any static electricity that may be charged on the body.

Pin 1 of the Flat Pack-IC is indicated by a " " mark.

Presolder

CBA

Fig. S-1-6

Flat Pack-IC

Fig. S-1-7

Ground for Work Bench

Be sure to place a conductive sheet or copper plate with proper grounding (1MΩ) on the work bench or other surface, where the semiconductors are to be placed. Because the static electricity charge on the clothing will not escape through the body grounding band, be careful to avoid contacting semiconductors to clothing.

CBA

CBA

1MΩ

1-4-3 X5SNOTE

Grounding Band

1MΩ

Conductive Sheet or Copper Plate

PREPARATION FOR SERVICING

How to Enter the Service Mode

Caution: 1

1. Optical sensors system are used for Tape Start and End Sensor on this equipment. Read this page carefully and prepare as described on this page before starting to service; otherwise, the unit may operate unexpectedly.

Preparing: 1

1. Cover Q202 (START SENSOR) and Q201 (END SENSOR) with Insulation Tape or enter the service mode to activate Sensor Inhibition automatically.

Note: Avoid playing, rewinding or fast forwarding the tape to its beginning or end, because both Tape End Sensors are not active.

How to Enter the Service Mode

1. Turn power on.

2. Use service remote control unit and press "DISC MENU" key. (See page 1-7-1.)

3. When entering the service mode, one of the number (1, 2 or 4) will display at corners of the screen.

4. During the service mode, electrical adjustment mode can be selected by remote control key. (Service remote control unit).

Details are as follows.

Key Adjustment Mode

Picture adjustment mode: Press the "PICTURE" button to change from BRT (Bright), *CNT (Contrast), *COL (Color),

PICTURE

*TNT(Tint) and *V-TNT(V-Tint). Press "CH o/p" key to display Initial Value. *Marked items are not necessary to adjust normally.

Key Adjustment Mode

Purity check mode: Shows Red, Green,

VOL o

VOL p

Caution: 2

1. The deck mechanism assembly is mounted on the Main CBA directly, and SW211 (REC-SAFETY SW) is mounted on the Main CBA. When deck mechanism assembly is removed from the Main CBA due to servicing, this switch can not be operated automatically.

Blue or White cyclically on the screen each time the "7" key is pressed.

H. Position Adjustment: See adjustment instructions page 1-7-7.

V.size/V. shift adjustment: See adjustment instructions page 1-7-7.

CD-VOL/DVD-BRT/DVD-SHARP Adjustment mode: See adjustment instructions page 1-7-4.

Cut-off Adjustment mode: See adjustment instructions page 1-7-5. White balance Adjustment mode: See adjustment instructions page 1-7-6.

Preparing: 2

1. To eject the tape, press the "STOP/EJECT" button on the unit (or Remote Control).

2. When you want to record during the Service mode, press the "Rec" button while depressing SW211 (REC-SAFETY SW) on the Main CBA.

Q201 (END SENSOR)

Q202 (START SENSOR)

C-Trap and Y DL Time TV/Y DL Time EXT/Y SW LPF/Black Stretch Off/ Black

1 No need to use.

3 No need to use.

6 No need to use.

Stretch CONT/C. Angle adjustment mode: See adjustment instructions page 1-7-2 and 1-7-3.

H fo adjustment mode: See adjustment instructions page 1-7-5.

Auto record mode: Perform recording (15 Sec.)-->Stop-->Rewind (Zero return) automatically.

Head switching position adjustment mode: See adjustment instructions page 1-7-8.

SW211 (REC-SAFETY SW)

1-5-1 T1000PFS

MAIN CBA

CABINET DISASSEMBLY INSTRUCTIONS

1. Disassembly Flowchart

This flowchart indicates the disassembly steps for the cabinet parts, and the CBA in order to gain access to item(s) to be serviced. When reassembling, follow the steps in reverse order. Bend, route and dress the cables as they were.

Caution !

When removing the CRT, be sure to discharge the Anode Lead of the CRT with the CRT Ground Wire before removing the Anode Cap.

[1] Rear Cabinet

[8] Function CBA

[5] DVD Main

CBA Unit

[6] DVD

Mechanism

[4] DVD Unit

[7] Sub CBA

[9] Deck Assembly

[3] CRT[2] Tray Chassis Unit

[10] Main CBA

2. Disassembly Method

REMOVAL

ID/

LOC.

No.

[1]

[2]

PAR T

Rear Cabinet

Tr ay Chassis Unit

REMOVE/ *UNHOOK/UNLOCK/

Fig. No.

RELEASE/UNPLUG/ DESOLDER

1 4(S-1), (S-2), 2(S-3) -

Anode Cap, *CN501A,

2, 3,

CRT CBA, *CN571,

*CN601, *CN802, *CN1801

Note

REMOVAL

ID/

LOC.

No.

[8]

[9]

[10] Main CBA 2 5(S-17) -

↓

(1)

(1): Order of steps in Procedure. When reassembling,

(2): Parts to be removed or installed. (3): Fig. No. showing Procedure of Part Location. (4): Identification of part to be removed, unhooked,

(5): Refer to the following "Reference Notes in the

PART

Function CBA

Deck Assembly

↓

(2)

follow the steps in reverse order.These numbers are also used as the Identification (location) No. of parts in Figures.

unlocked, released, unplugged, unclamped, or desoldered. S=Screw, P=Spring, L=Locking Tab, CN=Connector, *=Unhook, Unlock, Release, Unplug, or Desolder

2(S-2) = two Screws (S-2)

Table."

REMOVE/ *UNHOOK/UNLOCK/

Fig.

No.

RELEASE/UNPLUG/ DESOLDER

2, 5 2(S-12), *CN803 -

3(S-13), 7(S-14), (S-15), (S-16),

2, 5

Top Shield, *CL201, *CL401, *CL402, *CL403

↓

(3)

↓

(4)

Note

↓

(5)

[3] CRT 3, 5 4(S-4), *CL501A -

[4] DVD Unit 2, 5

DVD Main

[5]

CBA Unit

DVD

[6]

Mechanism

[7] Sub CBA 2, 5

4(S-5), *CN1601, *CN1602

(S-6), (S-7), 2(S-8),

2, 4,

2(S-9), *CN201,

*CN301, Loader Shield Top

2, 4, 5 (S-10),

Loader Shield Bottom

6(S-11), *CN301, *CN602

2-1 2-2 2-3 2-4

1-6-1 T1005DC

Reference Notes in the Table

Caution !

When removing the CRT, be sure to discharge the Anode Lead of the CRT with the CRT Ground Wire before removing the Anode Cap.

Reference Notes in the Table CAUTION 1: Discharge the Anode Lead of the CRT with the CRT Ground Wire before removing the Anode Cap.

1. Disconnect the following: Anode Cap, CN501A, CRT CBA, CN571, CN601, CN802, and CN1801. Then remove Tray Chassis Unit.

CAUTION 2: Electrostatic breakdown of the laser diode in the optical system block may occur as a potential difference caused by electrostatic charge accumulated on cloth, human body etc., during unpacking or repair work.

To avoid damage of pickup follow next procedures.

2-1. Remove screws (S-6), (S-7) and 2(S-8), and

remove Loader Shield Top.

2-2. Disconnect Connector (CN301) on the DVD Main

CBA Unit.

2-3. Short the three short lands of FPC cable with sol-

der before removing the FFC cable (CN201) from it. If you disconnect the FFC cable (CN201), the laser diode of pickup will be destroyed. (Fig. 4)

2-4. Remove two screws (S-9) and remove DVD Main

CBA Unit.

CAUTION 3: When reassembling, confirm the FFC cable (CN201) is connected completely. Then remove the solder from the three short lands of FPC cable. (Fig. 4)

4. Remove three screws (S-13) and remove Top Shield. Remove screws 7(S-14), (S-15) and (S-16). Then, desolder connectors (CL201, CL401, CL402, CL403) and lift up the Deck Assembly.

(S-1)

[1] Rear Cabinet

(S-2)

(S-3)

(S-1)

Fig. 1

1-6-2 T1005DC

(S-6)

(S-10)

(S-5)

(S-7)

(S-9)

(S-11)

(S-8)

Loader Shield Top

[5] DVD Main CBA Unit

Loader Shield Bottom

[6] DVD Mechanism

(S-14)

(S-11)

[2] Tray Chassis Unit

[4] DVD Unit

(S-13)

Top Shield

(S-14)

[9] Deck Assembly

(S-12)

(S-11)

(S-12)

(S-11)

[7] Sub CBA

[8] Function CBA

(S-17)

(S-15)

(S-14)

(S-17)

[10] Main CBA

(S-16)

Fig. 2

1-6-3 T1005DC

Anode Cap

(S-4)

[3] CRT

CRT CBA

(S-4)

Fig. 3

DVD Mechanism

Short the three short lands by soldering. (Either of two places.)

Connector

View for A

Fig. 4

1-6-4 T1005DC

DVD MAIN CBA

FACTORY USE ONLY

ANODE

CRT

GND

CL504A

SCREEN

FOCUS

CN501A

CL501B

TO SPEAKER

CN1801

FUNCTION CBA

CN1401

CN803

CN1601

SUB CBA

MAIN CBA

CL403

CL401

CN601

CN571

CN1602

CN503

CN301

CN401

CL501A

CN502

CN602

CN302

CRT CBA

CN802

TO SPEAKER

CL201

FE HEAD

CYLINDER ASSEMBLY

CL402

CN601

AC CORD

TUNER

ACE HEAD ASSEMBLY

DECK ASSEMBLY

CAPSTAN MOTOR

Fig. 5

1-6-5 T1005DC

ELECTRICAL ADJUSTMENT INSTRUCTIONS

General Note:

"CBA" is abbreviation for "Circuit Board Assembly."

NOTE:

Electrical adjustments are required after replacing circuit components and certain mechanical parts. It is important to perform these adjustments only after all repairs and replacements have been completed. Also, do not attempt these adjustments unless the proper equipment is available.

Test Equipment Required

1. NTSC Pattern Generator (Color Bar W/White Window, Red Color, Dot Pattern, Gray Scale, Monoscope, Multi-Burst)

2. AC Milli Voltmeter (RMS)

3. Alignment Tape (FL8A, FL8N), Blank Tape

4. DC Voltmeter

5. Oscilloscope: Dual-trace with 10:1 probe,

V-Range: 0.001~50V/Div, F-Range: DC~AC-60MHz

6. Frequency Counter

7. Plastic Tip Driver

8. Color Analyzer

How to Set up the Service mode:

Service mode:

1. Use the service remote control unit.

2. Turn the power on. (Use main power on the TV unit.)

3. To enter the TV mode, press "CH o / p" button on the TV unit.

4. Press "DISC MENU" button on the service remote control unit. Version of micro computer will display on the CRT. (Ex: 057-001)

X-Ray Protection Test

X-Ray protection test should be done when replacing any parts of this chassis.

1. Short both ends of R592 (on Sub CBA).

2. Confirm that the main power turns off.

3. If the main power does not turn off, then replace the following parts (D591, Q591, R592, R593, R594 and IC201).

4. Perform steps 1 to 3 again.

1. DC 114V (+B) Adjustment

Purpose: To obtain correct operation. Symptom of Misadjustment: The picture is dark and

unit does not operate correctly.

Test point Adj. Point Mode Input

How to make service remote control unit:

1. Prepare normal remote control unit (Part No. NE236UD). Remove 4 screws from the back lid (Fig. 1-1).

SCREW

Remote control unit (Bottom)

2. Cut off pin 10 of the remote control microprocessor and short circuit pins 10 and 17 of the microprocessor with a jumper wire

Fig. 1-1

D613 Cathode (+B),

HEAT SINK (GND)

Tape M. EQ. Spec.

--- DC Voltmeter +114±1.0V DC

Note:

D613 Cathode (+B), HEAT SINK, VR601 --- Main CBA

1. Connect the unit to AC Power Outlet.

2. Connect DC Volt Meter to D613 Cathode (+B) and HEAT SINK (GND).

3. Adjust VR601 so that the voltage of D613 Cathode (+B) becomes +114±1.0V DC.

VR601 --- -----

1-7-1 T1061EA

2. Setting for CONTRAST, COLOR, TINT and V-TINT Data Values

General

1. Enter the Service mode. (See page 1-7-1.)

2. Press "PICTURE" button on the service remote con-

trol unit. Display changes "BRT," "CNT," "COL," "TNT," and "V-TNT" cyclically when "PICTURE" button is pressed.

CONTRAST (CNT)

1. Press "PICTURE" button on the service remote con-

trol unit. Then select "CONTRAST (CNT)" display.

2. Press "CH o / p" buttons on the service remote

control unit so that the value of "CONTRAST (CNT)" becomes 80.

COLOR (COL)

1. Press "PICTURE" button on the service remote

control unit. Then select "COLOR (COL)" display.

2. Press "CH o / p" buttons on the service remote

control unit so that the value of "COLOR (COL)" becomes 58.

3-1. C-Trap Adjustment

Purpose: To get minimum leakage of the color signal

carrier. Symptom of Misadjustment: If C-Trap Adjustment is

incorrect, stripes will appear on the screen.

Test point Adj. Point Mode Input

J302

(B-OUT)

Tape M. EQ. Spec.

---

minimum

CH o / p

buttons

Oscilloscope

Pattern Generator

Figure

--- Color Bar

---

TINT (TNT)

1. Press "PICTURE" button on the service remote

control unit. Then select "TINT (TNT)" display.

2. Press "CH o / p" buttons on the service remote

control unit so that the value of "TINT (TNT)" becomes 57.

V-TINT (V-TNT)

1. Press "PICTURE" button on the service remote

control unit. Then select "V-TINT (V-TNT)" display.

2. Press "CH o / p" buttons on the service remote

control unit so that the value of "V-TINT (V-TNT)" becomes 56.

Note: BRIGHT data value does not need to be adjust-

ed at this moment.

Fig. 2

Note: J302 (B-OUT)--- Main CBA

1. Connect oscilloscope to J302.

2. Input a color bar signal from RF input. Enter the Service mode. (See page 1-7-1.)

3. Press "0" button on the remote control unit and select C-TRAP mode. (Fig. 3)

4. Press "CH o / p" buttons on the remote control unit so that the carrier leakage B-Out (3.58MHz) value becomes minimum on the oscilloscope.

5. Turn the power off and on again.

1-7-2 T1061EA

3-2. Setting for Y DL Time TV,

Y DL Time EXT, Y SW LPF, Black Stretch Off, Black Stretch CONT and C. Angle Data Values

1. Enter the Service mode. (See page 1-7-1.)

2. Y DL Time TV Adjustment: Press "0" button on the service remote control unit twice to show "D-T TV" on the display. Y DL Time EXT Adjustment: Press "0" button on the service remote control unit three times to show "D-T EXT" on the display. Y SW LPF Adjustment: Press "0" button on the service remote control unit four times to show "Y SW" on the display. Black Stretch Off Adjustment: Press "0" button on the service remote control unit five times to show "B-S" on the display. Black Stretch CONT Adjustment: Press "0" button on the service remote control unit six times to show "BS2" on the display. C. Angle Adjustment: Press "0" button on the service remote control unit seven times to show "CANG" on the display.

3. Y DL Time TV Adjustment: Select "2" by pressing "CH o / p" buttons on the service remote control. Y DL Time EXT Adjustment: Select "2" by pressing "CH o / p" buttons on the service remote control. Y SW LPF Adjustment: Select "0" by pressing "CH o / p" buttons on the service remote control. Black Stretch Off Adjustment: Select "OFF" by pressing "CH o / p" buttons on the service remote control. Black Stretch CONT Adjustment: Select "0" by pressing "CH o / p" buttons on the service remote control. C. Angle Adjustment: Select "103" by pressing "CH o / p" buttons on the service remote control.

C-TRAP Adjustment (Factory mode)

"0" button

C-TRP 0 C-TRP 1

"0" button

button

CH button

Y DL Time TV Adjustment

D-T TV 0 D-T TV 1

"0" button

button

CH button

Y DL Time EXT Adjustment

D-T EXT 0 D-T EXT 1

"0" button

button

CH button

Y SW LPF Adjustment

Y SW

"0" button

button

0 Y SW

CH button

Black Stretch Off Adjustment

B-S OFF

"0" button

button

CH button

Black Stretch CONT Adjustment

BS2 0

button

B-S 0

BS2 1

CH button

"0" button

C. Angle Adjustment

C-ANG 103

button

CH button

C-ANG 95

Fig. 3

1-7-3 T1061EA

4. Setting for CD-VOL, DVD-BRT

and DVD-SHARP Data Values

1. Enter the Service mode. (See page 1-7-1.)

2. CD-VOL Adjustment: Press "VOL o" button on the service remote control unit once to show "CD VOL" on the display. DVD-BRT Adjustment: Press "VOL o" button on the service remote control unit twice to show "DVD BRT" on the display. DVD-SHARP Adjustment: Press "VOL o" button on the service remote control unit three times to show "DVD SHP" on the display.

3. CD-VOL Adjustment: Select "7" by pressing "CH o / p" buttons on the service remote control. DVD-BRT Adjustment: Select "0" by pressing "CH o / p" buttons on the service remote control. DVD-SHARP Adjustment: Select "0" by pressing "CH o / p" buttons on the service remote control.

VOL button

CD-VOL Adjustment (Factory mode)

CD VOL 0 CD VOL 1

VOL button

button

CH button

DVD-BRT Adjustment

DVD BRT 0 DVD BRT 1

VOL button

button

CH button

DVD-SHARP Adjustment

DVD SHP 0 DVD SHP 1

VOL button

button

CH button

DVD Key Transmission

DVD KEY

VOL button

DVD Test

DVD TEST

Fig. 4

1-7-4 T1061EA

5. H fo Adjustment

6. Cut-off Adjustment

Purpose: To get correct horizontal position and size of

screen image. Symptom of Misadjustment: Horizontal position and

size of screen image may not be properly displayed.

Test point Adj. Point Mode Input

R583

Tape M. EQ. Spec.

--- Frequency Counter 15.734kHz±300Hz

Note: R583 --- Sub CBA

1. Connect frequency counter to R583.

2. Operate the unit for at least 20 minutes.

3. Enter the Service mode. (See page 1-7-1.) Press "2" button on the remote control unit and select HADJ mode.

4. Press "CH o / p" buttons on the remote control unit so that the display will change "0" to "7."

5. At this moment, choose display "0" to "7" when the frequency counter display is closest to

15.734kHz±300Hz.

6. Turn the power off and on again.

CH o / p

buttons

Video ---

Purpose: To adjust the beam current of R, G, B, and screen voltage.

Symptom of Misadjustment: White color may be reddish, greenish or bluish.

Test point Adj. Point Mode Input

Screen-

---

Tape M. EQ. Spec.

---

Control

CH o / p

buttons

Pattern

Generator

PATTERN GENERATOR

RF Black Raster

See Reference Notes below

Figure

RF INPUT

Fig. 5

Notes: Screen Control --- FBT (Sub CBA), FBT= Fly

Back Transformer, Use the Remote Control Unit.

1. Degauss the CRT and allow the unit to operate for 20 minutes before starting the alignment.

2. Input the Black raster signal from RF input.

3. Enter the Service mode. (See page 1-7-1.)

4. Press the "VOL p" button. (Press "VOL p" then display will change CUT OFF/ DRIVE and 7Fh adjustment).

5. Choose CUT OFF/DRIVE mode then press "1" button. This adjustment mode is CUT OFF (R).

6. Increase the screen control so that the horizontal line just appears on the CRT.

7. Press the "CH o / p" button until the horizontal line becomes white.

8. Choose CUT OFF/DRIVE mode then press "2" button. This adjustment mode is CUT OFF (G). Press "CH o / p" until the horizontal line becomes white.

9. Choose CUT OFF/DRIVE mode then press "3" button. This adjustment mode is CUT OFF (B). Press "CH o / p" until the horizontal line becomes white.

10.Turn the power off and on again.

1-7-5 T1061EA

7. White Balance Adjustment

8. Sub-Brightness Adjustment

Purpose: To mix red, green and blue beams correctly

for pure white. Symptom of Misadjustment: White becomes bluish

or reddish.

Test Point Adj. Point Mode Input

Screen

Tape M. EQ. Spec.

---

Note: Use service remote control unit

1. Operate the unit more than 20 minutes.

2. Face the unit to the east. Degauss the CRT using a degaussing coil.

3. Input the White Raster (APL 100%).

4. Set the color analyzer to the CHROMA mode and after zero point calibration, bring the optical receptor to the center on the tube surface (CRT).

5. Enter the Service mode. Press "VOL p" button on the service remote control unit and select "C/D" mode. (Display changes "C/D" and "7F" cyclically when "VOL p" button is pressed.)

6. Press "4" button on the service remote control unit for Red adjustment. Press "5" button on the service remote control unit for Blue adjustment.

7. In each color mode, press "CH o / p" button to adjust the values of color.

8. Adjust Red and Blue color so that the temperature becomes 9200K (x: 286 / y: 294) ±3%.

9. At this time, re-check that horizontal line is white. If not, re-adjust Cut-off Adjustment until the horizontal line becomes pure white.

10. Turn off and on again to return to normal mode. Receive APL 100% white signal and confirm that Chroma temperatures become 9200K (x: 286 / y: 294) ±3%.

Note: Confirm that Cut Off Adj. is correct after this adjustment, and attempt Cut Off Adj. if needed.

CH o / p

buttons

Pattern

Generator,

Color analyzer

Figure

Color Analyzer

White Raster

(APL 100%)

See below

Fig. 6

Purpose: To get proper brightness. Symptom of Misadjustment: If Sub-Brightness is

incorrect, proper brightness cannot be obtained by adjusting the Brightness Control.

Test point Adj. Point Mode Input

---

Tape M. EQ. Spec.

---

White

Note: SMPTE Setup level --- 7.5 IRE

1. Enter the Service mode. (See page 1-7-1.) Then input SMPTE signal from RF input.

2. Press "PICTURE" button. (Press "PICTURE" button then display will change BRT, CNT, COL, TNT, and V-TNT). Select BRT and press "CH o / p" buttons so that the bar is just visible (See above figure).

3. Turn the power off and on again.

CH o / p

buttons

Pattern

Generator

Figure

---

SMPTE

7.5IRE

See below

Black

This bar just visible

Fig. 7

1-7-6 T1061EA

9. Focus Adjustment

11. V. Shift Adjustment

Purpose: Set the optimum Focus. Symptom of Misadjustment: If Focus Adjustment is

incorrect, blurred images are shown on the display.

Test point Adj. Point Mode Input

--- Focus Control --- Monoscope

Tape M. EQ. Spec.

--- Pattern Generator See below.

Note: Focus VR --- FBT (Sub CBA), FBT= Fly Back Transformer

1. Operate the unit more than 30 minutes.

2. Face the unit to the East and degauss the CRT using a degaussing coil.

3. Input the monoscope pattern.

4. Adjust the Focus Control on the FBT to obtain a clear picture.

10. H. Position Adjustment

Purpose: To obtain correct horizontal position and

size of screen image. Symptom of Misadjustment: Horizontal position and

size of screen image may not be properly displayed.

Test point Adj. Point Mode Input

---

Tape M. EQ. Spec.

--- Pattern Generator ---

CH o / p

buttons

--- Monoscope

Purpose: To obtain correct vertical position of screen image.

Symptom of Misadjustment: If V. position is incorrect, vertical position of image on the screen may not be properly displayed.

Test point Adj. Point Mode Input

---

Tape M. EQ. Spec.

--- Pattern Generator ---

1. Enter the Service mode. (See page 1-7-1.) Press "9" button on the remote control unit and select V-P mode. (Press "9" button then display will change to V-P and V-S).

2. Input monoscope pattern.

3. Press "CH o / p" buttons on the remote control unit so that the top and bottom of the monoscope pattern are equal to each other.

CH o / p

buttons

--- Monoscope

12. V. Size Adjustment

Purpose: To obtain correct vertical height of screen

image. Symptom of Misadjustment: If V. Size is incorrect,

vertical height of image on the screen may not be properly displayed.

Test point Adj. Point Mode Input

---

CH o / p

buttons

--- Monoscope

1. Enter the Service mode. (See page 1-7-1.) Press "8" button on the remote control unit and select H-P mode.

2. Input monoscope pattern.

3. Press "CH o / p" buttons on the remote control unit so that the left and right side of the monoscope pattern are equal to each other.

4. Turn the power off and on again.

Tape M. EQ. Spec.

--- Pattern Generator 90±5%

1. Enter the Service mode. (See page 1-7-1.) Press "9" button on the remote control unit and select V-S mode. (Press "9" button then display will change to V-P and V-S).

2. Input monoscope pattern.

3. Press "CH o / p" buttons on the remote control unit so that the monoscope pattern is 90±5% of display size and the circle is round.

1-7-7 T1061EA

13. Head Switching Position Adjustment

Purpose: Determine the Head Switching Position dur-

ing Playback. Symptom of Misadjustment: May cause Head

Switching Noise or Vertical Jitter in the picture. Note: Unit reads Head Switching Position automati-

cally and displays it on the screen (Upper Left Corner).

1. Playback test tape (FL8A, FL8N).

2. Enter the Service mode. (See page 1-7-1.) Then press the number "5" button on the remote control unit.

3. The Head Switching position will display on the screen; if adjustment is necessary follow step 4.

6.5H(412.7µs) is preferable.

4. Press "CH o" or "CH p" button on the remote control unit if necessary. The value will be changed in

0.5H steps up or down. Adjustable range is up to

9.5H. If the value is beyond adjustable range, the display will change as:

Lower out of range: 0.0H Upper out of range: -.-H

5. Turn the power off and on again.

The following 2 adjustments normally are not attempted in the field. They should be done only when replacing the CRT then adjust as a preparation.

14. Purity Adjustment

Purpose: To obtain pure color. Symptom of Misadjustment: If Color Purity Adjust-

ment is incorrect, large areas of color may not be properly displayed.

Test point Adj. Point Mode Input

---

Tape M. EQ. Spec.

--- Pattern Generator See below.

GREEN

Deflection Yoke

Purity Magnet

Figure

RED

--- *Red Color

BLUE

Fig. 8

* This becomes RED COLOR if the 7KEY is pressed

while in service mode.

1. Set the unit facing east.

2. Operate the unit for over 30 minutes before adjusting.

3. Fully degauss the unit using an external degaussing coil.

4. Set the unit to the AUX mode which is located before CH2 then input a red raster from video in.

5. Loosen the screw on the Deflection Yoke Clamper and pull the Deflection Yoke back away from the screen. (See Fig. 9.)

6. Loosen the Ring Lock and adjust the Purity Magnets so that a red field is obtained at the center of the screen. Tighten Ring Lock. (See Fig. 8,9.)

7. Slowly push the Deflection Yoke toward the bell of the CRT and set it where a uniform red field is obtained.

8. Tighten the clamp screw on the Deflection Yoke.

1-7-8 T1061EA

15. Convergence Adjustment

Purpose: To obtain proper convergence of red, green

and blue beams. Symptom of Misadjustment: If Convergence Adjust-

ment is incorrect, the edge of white letters may have color edges.

Test point Adj. Point Mode Input

C.P. Magnet (RB),

---

C.P. Magnet (RB-G),

Deflection Yoke

Tape M. EQ. Spec.

--- Pattern Generator See below.

Figure

DEFLECTION YOKE

CRT

COIL

PURITY

SCREW

---

RB-G

RING LOCK

Dot Pattern

Crosshatch

SCREW

DY WEDGE

C.P. MAGNET

COIL CLAMPER

C.P. MAGNET (RB)

C.P. MAGNET (RB-G)

CLAMPER

C.P. MAGNET

Fig. 9

Fig. 10

Fig. 11

1. Set the unit to the AUX mode which is located before CH2 then input a dot or crosshatch pattern.

2. Loosen the Ring Lock and align red with blue dots or crosshatch at the center of the screen by rotating (RB) C.P. Magnets. (See Fig. 10.)

3. Align red / blue with green dots at the center of the screen by rotating (RB-G) C.P. Magnet. (See Fig. 11.)

4. Fix the C.P. Magnets by tightening the Ring Lock.

5. Remove the DY Wedges and slightly tilt the Deflection Yoke horizontally and vertically to obtain the best overall convergence.

6. Fix the Deflection Yoke by carefully inserting the DY Wedges between CRT and Deflection Yoke.

1-7-9 T1061EA

FIRMWARE RENEWAL MODE

1. Turn the power on and press [SELECT] button on the remote control unit to put the DVD player into DVD mode. Then remove the disc on the tray. (It is possible to move to F/W version up mode only when the DVD player is in DVD mode with the tray opened.)

2. To put the DVD player into F/W version up mode, press [9], [8], [7], [6], and [SEARCH MODE] buttons on the remote control unit in that order. Fig. a appears on the screen.

" differ depending on the models.

*******

F/W Version Up Mode Model No : *******

Please insert a DISC

for F/W Version Up.

VERSION : *.**

EXIT: SELECT

Fig. a Version Up Mode Screen

The DVD player can also enter the version up mode with the tray open. In this case, Fig. a will be shown on the screen while the tray is open.

3. Load the disc for version up.

4. The DVD player enters the F/W version up mode automatically. Fig. c appears on the screen. If you enter the F/W for different models, “Disc Error” will appear on the screen, then the tray will open automatically.

" differ depending on the models.

*******

5. After programming is finished, the tray opens automatically. Fig. e appears on the screen and the checksum in (*3) of Fig. e.

" differ depending on the models.

*******

F/W Version Up Mode

VERSION : X5****_****.ab5 Completed

SUM : 7ABC (*3)

Model No : ******* VERSION : *.**

Fig. e Completed Program Mode Screen

At this time, no buttons are available.

6. Remove the disc on the tray.

7. Press [SELECT] button on the remote control unit to go to TV mode, or press [POWER] button on the unit to turn the power off.

8. Press [SELECT] button on the remote control unit to put the DVD player into DVD mode again.

9. Press [1], [2], [3], [4], and [DISPLAY] buttons on the remote control unit in that order. Fig. g appears on the screen.

" differ depending on the models.

*******

MODEL : *******

Version Region

: *.**

: *

F/W Version Up Mode Model No : *******

VERSION : X5****_****.ab5 Reading...(*2)

VERSION : *.**

Fig. c Programming Mode Screen

The appearance shown in (*2) of Fig. c is described as follows:

AppearanceNo. State

Reading... Sending files into the memory

Erasing... Erasing previous version data

Programming...

3 Writing new version data

EXIT: SELECTEEPROM CLEAR : CLEAR

Fig. g

10.Press [CLEAR] button on the remote control unit. Fig. h appears on the screen.

" differ depending on the models.

*******

MODEL : *******

Version Region

: *.**

: *

EXIT: SELECTEEPROM CLEAR : CLEAR

EEPROM CLEAR : OK

Fig. h

When “OK” appears on the screen, the factory default will be set. Then the firmware renewal mode is complete.

11.To exit this mode, press [CH UP/DOWN] or [SELECT] button to go to TV mode, or press [POWER] button to turn the power off.

1-8-1 T1000TEST

BLOCK DIAGRAMS < TV/VCR Section >

System Control / Servo Block Diagram

TO POWER

SUPPLY BLOCK

TO TV PROCESS

BLOCK DIAGRAM

DIAGRAM

TO Hi-Fi AUDIO

BLOCK DIAGRAM

TO AUDIO

BLOCK DIAGRAM

TO VIDEO

BLOCK DIAGRAM

RS201

REMOTE

SAFETY

SENSOR

REMOTE

SDATA

SCLK

REC

SW211

REC-SAFETY

KEY0

KEY1

IC201 (SERVO/SYSTEM CONTROL)

AL+5V

KEY SWITCH

SW201 SW203,

SW206 SW210

(MEMORY)

SCL

SDA

IC202

SCL

SDA

DVD-REMOTE

C-OPEN

REC-LED

D224 S-LED

AL+5V

AFT

SCL

AFT

Q207

D204 REC

SDA

C-SYNC

DVD-H

D216 DVD

P-ON+5V

TV/VCR-LED

Q211

D217

TV/VCR

P-ON-H

P-DOWN

DVD-MAIN-POWER

P-ON-H

P-DOWN

DVD-MAIN-POWER

CTL-AMP-OUT

CTL(-)

CTL(+)

Q210

TP202

CTL-AMP-OUT

WF3

SDA

AL+5V

SW212

LD-SW

SCL

ST/SAP-IN

LD-SW1

Hi-Fi-H-SW

NORMAL-H

ST/SAP-IN

Hi-Fi-H-SW

NORMAL-H

ST-SENS.

END-SENS.

A-MUTE

SDA

T-REEL

Q206

SCL

DVD-A-MUTE

T-REEL

Q205

A-MUTE

D-REC-H

SP-MUTE

A-MUTE

D-REC-H

SP-MUTE

DVD-A-MUTE

RESET

TIMER+5V

YCA-SCL

YCA-SDA

CL201

YCA-CS

C-F/R

P-ON+5V(3)

M+12V

1M+12V

2P-ON+5V(3)

V-H-SW

C-FG

3C-FG

ENV-DET

V-H-SW

C-CONT

C-F/R

V-ENV

DV-SYNC

ENV-DET

DV-SYNC

LD-CONT

827790

7LD-CONT

FG-GND

ROTA

V-ENV

D-CONT

8D-CONT

RF-SW

YCA-SCL

RF-SW

D-PFG

9D-PFG

YCA-SDA

YCA-SCL

YCA-SDA

10M-GND

11D/L+12V

YCA-CS

D/L+15V

12D/L+15V

MAIN CBA

CN803

33KEY1

CN1401

KEY SWITCH

FUNCTION CBA

SW1401 SW1408

CN301

9SDATA

6SCLK

8CS

DVD-REMOTE

687

CN503

Q1621

Q1619

Q1620

CN1602

DVD-REMOTE

21 FP-DOUT

18 FP-CLK

19 FP-CS

TO DVD SYSTEM

CONTROL/SERVO

BLOCK DIAGRAM

CN401

SUB CBA

CL402

2CTL(+)

)

AC HEAD ASSEMBLY

ASSEMBLY

(DECK

CONTROL

1CTL(-)

HEAD

1-9-1

END-SENS.

Q201

ST-SENS.

Q202

SENSOR CBA

(END-SENSOR)

CAPSTAN MOTOR

SENSOR CBA

(ST-SENSOR)

CAPSTAN

MOTOR

SENSOR

CYLINDER ASSEMBLY

DRUM

MOTOR

T1061BLS

+ 82 hidden pages