Symphonic SC313D, 6313CD, EWC1303 Schematic

SERVICE MANUAL

Sec. 1: Main Section

I Specifications I Preparation for Servicing I Adjustment Procedures I Schematic Diagrams I CBA’s

13" COLOR TV/VCR COMBINATION

SC313D

Sec. 2: Deck Mechanism Section

I Standard Maintenance I Alignment for Mechanism I Disassembly/Assembly of Mechanism

6313CD

Sec. 3: Exploded views and Parts List Section

I Exploded views I Parts List

EWC1303

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 possibilit y 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, eval uate and advice the service tra de 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 pr ocedure 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 jeop ardized by the service method selected.

MAIN SECTION

13" COLOR TV/VCR COMBINATION

SC313D/6313CD/EWC1303

Sec. 1: Main Section

I Specifications I Preparation for Servicing I Adjustment Procedures I Schematic Diagrams I CBA’s

TABLE OF CONTENTS

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

Important Safety Precautions. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-2-1

Standard Notes for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-3-1

Preparation for Servicing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-4-1

Operating Controls and Functions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-5-1

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

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

Block Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8-1

Mechanical Trouble Indicator. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8-13

Power Supply Trouble Shooting Guide . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-8-15

Schematic Diagrams / CBA’s and Test Points . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-9-1

Waveforms. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-10-1

Wiring Diagrams . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1-11-1

System Control Timing Charts . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-12-1

IC Pin Function Descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-13-1

Lead Identifications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .1-14-1

SPECIFICATIONS

*ˆMode---------SP mode unle ss 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 Horizontal % — 15 Vertical % — 10

3. High Voltage — kV 22 —

Description Condition Unit Nominal Limit

1. Misconvergence Center m/m — 0.3

Corner m/m — 1.5

Side m/m — 1.2

2. Tint Control Range — deg ±30 —

3. Contrast Control Range — dB 12 8

4. Brightness APL 100% ft-L 55 40

5. Color Te mpe rat ure — K 9200 —

<VCR>

Description Condition Unit Nominal Limit

1. Horizontal Resolution (R/P ) Li ne 230 20 0

2. Jitter (Low) (R/P) µS 0.05 0.2

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

PM(SP) (R/P) dB 36 33

4. Wow & Flutter (RMS) (R/P) % 0.25 0.5

<TUNER>

Description Condition Unit Nominal Limit

1. Video S/N — dB 45 40

2. Audio S/N (W/LPF) — dB 43 40

1-1-1 T5400SP

<AUDIO>

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

Description Condition Unit Nominal Limit

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

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

3. Audio Distortion (W/LPF) (R/P) % 3.0 5.0

4. Audio Freq. Response

(-10dB Ref. 1KHz)

Note: Nominal specific ations represent the design specificatio ns. All units should b e able to approxim ate these. Some will exceed a nd so me may dro p slightl y below these spec ifica tions . Limit s pecific ations repre sent t he abs olute worst conditi on that still might be c onsidered acce ptable. In no case shoul d a unit fai l to meet li mit specific ations.

200Hz (R/P)

8kHz (R/P)

dB dB

-2.0 0

-2.0±5.0 0±6.0

1-1-2 T5400SP

IMPORTANT SAFETY PRECAUTIONS

Prior to shipment from the factory , our pro ducts are strictl y insp ected for re cogni zed product safety and el ectric al codes of the countries in which they are to be sold. Howev er, in order to ma intain such c ompliance, it is equally important to implement the following precautions when a set is being serviced.

Safety Precautions for TV Circuit

1. Before returning an instrum ent t o the c ustom -

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

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

a. Be sure that no bui lt-in prot ective devices a re de-

fective and have b een defeated during servicing. (1) Protective shields are provided on this chassis to protect both the technician an d the customer. Correctly replace all missing protective shields, including any removed for servicing convenience. (2) When reinstalli ng the c hassis an d/or othe r assembly in the cabinet, be sure to put back in place all protective de vices, in cluding but not li mited to, nonmetallic control knobs, insulating fishpapers, adjustment and compartment cove rs/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 n ot 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 acr oss the two AC plug prongs. Place the instrument AC switch in the on position. Connect one lead of an oh mmeter to the A C plug prongs tied together and to uch the other ohmme ter 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 mego hm or greater than 5 .2 megohm, an abnormality exi sts that must be correct ed before the instrum ent is retur ned to the c ustom er. Repeat this test with the ins trument 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 d uring thi s test.) Use a leak-

age current tester or a me tering syst em that com plies with American National Standards Institute (ANSI) C101.1 Leakage Current for Appliances and Underwriters Laborat ories (UL) 1410, (50.7). With the instrument AC switc h first in the on posi tion and then in the o ff position, measure from a known earth ground (metal water pipe, conduit, etc.) to all exposed me tal parts of the instrument (antennas, handle brac kets, metal cabinet, screw heads, metallic overlays, c ontrol shafts, etc.), especially any exposed metal parts that offer an electrical return path to the chassis. Any current measured must not excee d 0.5 milli-ampere. Re verse 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 AC CES SORI ES.

e. X-Radiation and High Voltage Limits - Because

the picture tube i s the prim ary potentia l source of X-radiatio n in solid- state TV receiver s, it is s pecially constructed to prohibit X-radiation emissions. For continued X-radiation pr otection, 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 mea su re d ea ch tim e s er vic -

1-2-1 SFTY_2

ing is performed that inv olves B+, horizontal deflection or high voltage. Correct operation of t he X-radiation protection c ircu its a ls o m ust b e r ec on firmed each time they are serviced. (X-radiation protection circuits also may be called "horiz ontal disable" or "hold do wn.") R ead a nd a ppl y th e hi gh voltage limits a nd, if the chassis is so e quipped, the X-radiation protection circuit specifications given on instrument labe ls and i n the P roduct S afety & X-Radiation Warning note on the service data chassis schematic. High voltage is maintained within specified limits by close tolerance safety-related components/adjus tme nts in th e hig h-vo lta ge 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 th e receiver cabi net, 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 modificatio ns and the addition of items such as auxiliary audio and/or video output connections, mig ht alter the safety ch aracteristics of this receiver and create a hazard to the user. Any design alter ations or addition s will void the manufacturer's warr anty 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 pic ture tube only with one of the same type numbe r. Do not rem ove, install , or otherwise handle the picture tube in any ma nner without first putting on shatterproof goggles equipped with side shields. People not so equipped must be ke pt safely away while p icture tubes are handled. Keep the picture tube away from your body. Do not handl e the pictur e tu be b y its neck. Some "in-line" picture tubes are equipped with a permanently at tached 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 conduc tor of th e AC powe r cor d and maybe safety-serviced without an isolation transformer only i f the AC power plug i s inserted so that the chassis is connected to the ground side of the AC power source. To confi rm that the AC power plug is ins erted 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 ch assis 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 so urce , for both pers onnel and test equipment protection.

c. Some TV receiver chassis have a secondary

ground system in addition to the main chassis ground. This se conda ry gro und s ystem is no t iso lated 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 dres s in the following areas: a. near sharp edge s, b. near thermal ly hot parts-be sure that leads and components do not touch thermally hot parts, c. the AC su pply, d. high volta ge, and e. antenna wiring. Alway s inspe ct in all ar eas for pinched, out of plac e, or frayed wiring. C heck 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 origin al specifications. Additiona lly, determine the cause of ov erheating and/or damage and, if nece ss ar y, ta ke corre ct i ve ac ti o n to remove any potential safety hazard.

8. Product Safety Notice - Some electrical and mechanical parts have s pecia l safety- relat ed char acteristics which are often not evident from visual inspection, nor can the protection they give necessarily be obtained by replaci ng 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 sh ock, fire, and/or other hazards. The Product's Safety is under review continuously and new instructions are issued whenever appropriate . Prior to shi pment from the factory, our products are strictly inspected to confirm with the recognized product safety and electrical codes of the countrie s in which they ar e to be sold. However, in order to maintain such compliance, it is equal ly important to imp lement the following precautions when a set is being servic ed.

1-2-2 SFTY_2

Precautions during Servicing

A. Parts identified b y the ( # ) symbo l are c ritica l for

safety. Replace only with part number specified.

B. In addition to safety, othe r parts and assemblies

are specified for conformance with regulations applying to spurious radiati on. 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 abo ut the terminals before so ldering.

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

ing parts (heatsinks, oxide metal film resistors, fusible resistor s, 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. Use care that foreign objects (screws, solder drop-

lets, 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 con nector by cutti ng 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 in su lation from the en ds 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 too l to crimp the met al slee ve at the center position . Be sure to crimp fully to the complete closure of the tool.

L. When connecting or disconnecting the VCR con-

nectors, f irst, di sconnec t the AC plug fr om AC supply socket.

1-2-3 SFTY_2

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 th e fol lo wing tes ts and c on firm the specified values in orde r to verify comp liance with safety standards.

1. Clearance Distance

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

T able 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 cor d plug prongs) and externally exposed accessible parts (RF terminals, antenna terminals, vid eo and audio input a nd outp ut 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 . & 1.5 kΩ RES. connected in

parallel

1-2-4 SFTY_2

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 indica ted as shown:

Pin 1

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

Pin 1

Input

Bottom View

How to Read the Values of the Rectangular Type Chip Components

Example: (a) Resistor

473

= 473 = 47 [kΩ]

(b) Capacitor

= Not Shown

Caution:

Once chip parts (Resistors, Capacitors, Transistors, etc.) are removed, they must not be reused. Always use a new part.

Replacement Procedures for

(Top View)

Instructions for Connectors

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

2. FFC ca ble (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 ]

Leadless (Chip) Components

The Following Procedures are Recommended for the Replacement of the Leadless Components Used in this Unit.

1. Preparation for replacement

a. Soldering Iron

Use a pencil-type soldering iron (less than 30 watts).

b. Solder

Eutectic solder (Tin 63%, Lead 37%) is recommended.

c. Soldering time

Do not apply heat for more than 4 seconds.

d. Preheating

Leadless capacitor must be preheated before installation. (130°C~150°C, for about two minutes.)

Notes:

a. Leadless components must not be reused after

removal.

b. Excessive mechanical stress and rubbing for the

component electrode must be avoided.

2. Removing the leadless component

Grasp the leadless component body with tweezers and alternately apply heat to both electrodes. When the solder on both electrodes has melted, remove leadless component with a twisting motion.

1-3-1 SFTY_5

Notes:

a. Do not atte mpt to lift the component off the boar d

until the component is completely disconnected from the board by the twisting action.

b. Take care not to break the copper foil on the

printed board

3. Installing the leadless component

a. Presolder the contact points of the circuit board. b. Press th e part downward wi th tweezers and solde r

both electrodes as shown below.

Note:

Do not glue the replacement leadless component to the circuit board.

Tweezers

Chip

oldering Iron

Soldering Iron

Tweezers

Solder

Soldering Iron

2. Th e Flat Pack-IC on the CBA is affixed with gl ue, so be careful not to break or damage the foil of each pin or solder l ands u nder 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 eac h lead of the F lat Pack - IC upward one by

one, using a sharp pin or wire to which sol der will not adhere (iron wi re). When hea ting the pins, u se 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)

b. Affix the wire to a workbench or solid mounting

point, as sh own 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 sold ering iron, care must be taken to ensure that the Flat Pa ck - IC is not being held by glue, or when it is removed from the CBA, it may be damaged if force is used.

Presolder

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.

How to Remove / Install Flat Pack IC

Caution:

1. 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)

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

(See Fig. S-1-6). Make s ure t his mar k 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.

1-3-2 SFTY_5

Hot Air Blower

Iron Wire

CBA

Masking Tape

Tweezers

Flat Pack-IC

Fig. S-1-1

Hot-air Flat Pack-IC Desoldering Machine

Flat Pack-IC

Fig. S-1-2

Desoldering Braid

To Solid Mounting Point

Example :

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

Presolder

Soldering Iron

Fig. S-1-5

Fig. S-1-6

Fine Tip Soldering Iron

Soldering Iron

Fig. S-1-3

Flat Pack-IC

CBA

Fig. S-1-7

Sharp Pin

Fig. S-1-4

1-3-3 SFTY_5

Instructions for Handling Semiconductors

Electrostatic breakdown of the semiconductors may occur due to a pot ential difference ca used by electrostatic charge during unpacking or repair work.

Ground for Human Body

Be sure to wear a gr oundi ng ba nd (1MΩ) that is prop erly grounded to rem ov e a ny s tatic ele ctr ici ty tha t m ay be charged on the body.

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.

1MΩ

CBA

Grounding Band

1MΩ

CBA

Conductive Sheet or Copper Plate

1-3-4 SFTY_5

PREPARATION FOR SERVICING

)

How to Enter the Service Mode

Caution: 1

1. Optical sensors system are used for T ape 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 fo rwarding the tape to its beginning o r end, because both Tape End Sensors are not active.

How to Enter the Service Mode

1. Turn power on.

2. Use servic e remote control unit and press WAKEUP/SLEEP key. (See page1-7-1)

3. When e ntering the servic e mode, one of th e 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 con trol key. (Service remote control unit).

Details are as follows.

Key Adjustment Mode

Picture adjustment mode: Press the MENU button to change from BRT (Bright), *CNT (Contrast), *CLR

1 No need to use. 2 3 No need to use.

(Color), *TNT(Tint) and *V-T. Press CH UP/DOWN key to display Initial Value. *Marked items are not necessary to adjust normally.

C-Trap and Y DL Time/Y SW LPF adjustment mode: See adjustment instructions page 1-7-2.

H adjustment mode: See adjustmentinstructions page 1-7-2.

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

Head switching point adjustment mode: See adjustment instructions page 1-7-5.

Key Adjustment Mode

6 No need to use.

Purity check mode: Shows Red,

Caution: 2

1. Th e deck mec hanism assem bly is mounte d 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 servici ng, this switch c an not be operated automatically.

Green, Blue or White cyclically on the screen each time the “7” key is pressed.

H. Shift adjustment mode: See adjustment instructions page 1-7-3.

V.size/V. shift adjustment: See adjustment instructions page 1-7-3.

Preparing: 2

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

2. Whe n yo u want to record during the Se rv ice m ode, press the Rec button while depressing SW211 (REC-SAFETY SW) on the Main CBA.

Q201 (END SENSOR)

SW211 (REC-SAFETY SW)

Q202 (START SENSOR

MAIN CBA

1-4-1 T5401PFS

•

AUDIO

EARPHONE

VIDEO

STOP/EJECT REW

PLAY

F.FWD REC/OTRCHANNEL

VOLUME

POWER

1 92 3 4 5 6 7 8131011 1412

POWER

WAKE-UP

/SLEEP

123

456

789

+100

EJECT

CHANNEL

RETURN

REW

PLAY

STOP

F.FWD

GAME

RECORD

PAUSE/STILL

SPEED

TIME SEARCH

CHANNEL

T-PROG.

CLEAR

COUNTER

RESET

DISPLAY MUTE

VOLUME

11 18

19 20

22 21

OPERATING CONTROLS AND FUNCTIONS

[ SC313D ]

This manual covers 13" and 19". The operation of the two models are exactly the same except the appearance. 19" model is illustrated in this manual.

OTE:

We do not recommend the use of universal remote controls. Not all of the functions may be controlled with a universal remote control.

If you decide to use a universal remote control with this unit, please be aware that the code number given may not operate this unit. In this case, please call the manufacturer of the universal remote control.

TV/VCR FRONT PANEL -

REMOTE CONTROL -

VIDEO input jack– Connect to the video output

jack of your video camera or another VCR.

AUDIO input jack– Connect to the audio output

jack of your audio equipment, video camera or another VCR.

POWER button– Press to turn TV/VCR on and

off. Press to activate timer recording.

VOLUME

buttons– Adjust the volume

level.

CHANNEL K / L buttons– Press to select the

desired channels for viewing or recording. You may display the main menu on the TV scree

by pressing repeatedly this button on the TV/VCR.

TRACKING function– Press to minimize video

‘noise’ (lines or dots on screen) during playback mode.

Remote Sensor Window– Receives the infrared

signals from the remote control.

STOP button– Press to stop the tape motion.

EJECT button– Press in the Stop mode to remov

tape from TV/VCR.

button–

Press to select setting modes from the on screen

•

menu. Press to enter digits when setting program.

•

(for example: setting clock or timer program)

1-5-1 T5400IB

REAR VIEW -

ANT.

2726

1 1

8 REW button– Press to rewind the tape, or to view

the picture rapidly in reverse during playback mode. (Rewind Search)

button–

Press to select a mode from a particular menu.

•

(for example: LANGUAGE or USER’S SET UP)

PLAY button– Press to begin playback.

K button–

Press to select setting modes from the on screen

•

menu. Press to enter digits when setting program.

•

(for example: setting clock or timer program)

0 F.FWD button– Press to rapidly advance the tape,

or to view the picture rapidly in forward during playback mode. (Forward Search)

button–

When setting program (for example: setting clock

•

or timer program), press to determine your selection and proceed to the next step you want to input.

Press to determine setting modes from on screen

•

menu. Press to select a mode from a particular menu.

•

(for example: LANGUAGE or USER’S SET UP)

1 REC button– Press for manual recording.

OTR button– Activates One Touch Recording.

(only on the TV/VCR)

2 RECORD indicator– Flashes during recording.

Lights up in the Stand-by mode for Timer Recording.

3 EARPHONE jack– Connects to earphones (not

supplied) for personal listening. The size of jack is 1/8” monaural (3.5mm).

4 Cassette compartment 5 Number buttons– Press to select desired channels

for viewing or recording. To select channels from 1 to 9, first press the 0 button and then 1 to 9.

+100 button– When selecting cable channels

which are higher than 99, press this button first, then press the last two digits. (To select channel 125, first press the “+100” button then press “2” and “5”).

MENU button– Press to display the main menu o

the TV screen.

DISPLAY button– Display the counter or the cur

rent channel number and current time on the TV screen.

SPEED button– Press to choose the desired

recording speed:SP/SLP.

T-PROG. CLEAR button–

ting of timer program.

COUNTER RESET button– Press to reset counte

to 0:00:00.

GAME button– Sets the game mode and externa

input mode at the same time.

TIME SEARCH button– Press to activate Time

Search mode.

PAUSE/STILL button– Press to temporarily stop

the tape during the recording or to view a still pi ture during playback.

MUTE button– Mutes the sound. Press it again

resume sound.

CHANNEL RETURN button– Press to go back to

the previously viewed channel. For example, pressing this button once will change channel dis play from 3 (present channel) to 10 (previously viewed channel), and pressing it a second time will return from 10 to 3.

WAKE UP/SLEEP button– Sets the Wake up or

Sleep Timer.

Power cord– Connect to a standard

(120V/60Hz).

ANT. terminal– Connect to an antenna or cable

system.

Press to cancel a set-

AC outlet

1-5-2 T5400IB

•

AUDIO

EARPHONE

VIDEO

STOP/EJECT

REW

PLAY

F.FWD REC/OTRCHANNEL

VOLUME

POWER

1 92 3 4 5 6 7 8131011 1412

POWER

WAKE-UP

/SLEEP

123

456

789

+100

EJECT

CHANNEL

RETURN

REW

PLAY

STOP

F.FWD

GAME

RECORD

PAUSE/STILL

SPEED

TIME SEARCH

CHANNEL

T-PROG.

CLEAR

COUNTER

RESET

DISPLAY MUTE

VOLUME

11 18

19 20

22 21

[ 6313CD ]

This manual covers 13" and 19". The operation of the two models are exactly the same except the appearance. 19" model is illustrated in this manual.

OTE:

We do not recommend the use of universal remote controls. Not all of the functions may be controlled with a universal remote control.

TV/VCR FRONT PANEL

VIDEO input jack– Connect to the video output

REMOTE CONTROL

jack of your video camera or another VCR.

AUDIO input jack– Connect to the audio output

jack of your audio equipment, video camera or another VCR.

POWER button– Press to turn TV/VCR on and

off. Press to activate timer recording.

VOLUME

buttons– Adjust the volume

level.

CHANNEL K / L buttons– Press to select the

desired channels for viewing or recording. You may display the main menu on the TV scree

by pressing repeatedly this button on the TV/VCR.

TRACKING function– Press to minimize video

‘noise’ (lines or dots on screen) during playback mode.

Remote Sensor Window– Receives the infrared

signals from the remote control.

STOP button– Press to stop the tape motion.

EJECT button– Press in the Stop mode to remov

tape from TV/VCR.

button–

Press to select setting modes from the on screen

•

menu. Press to enter digits when setting program.

•

(for example: setting clock or timer program)

1-5-3 T5400IB

REAR VIEW

ANT.

2726

1 1

8 REW button– Press to rewind the tape, or to view

the picture rapidly in reverse during playback mode. (Rewind Search)

button–

Press to select a mode from a particular menu.

•

(for example: LANGUAGE or USER’S SET UP)

PLAY button– Press to begin playback.

K button–

Press to select setting modes from the on screen

•

menu. Press to enter digits when setting program.

•

(for example: setting clock or timer program)

0 F.FWD button– Press to rapidly advance the tape,

or to view the picture rapidly in forward during playback mode. (Forward Search)

button–

When setting program (for example: setting clock

•

or timer program), press to determine your selection and proceed to the next step you want to input.

Press to determine setting modes from on screen

•

menu. Press to select a mode from a particular menu.

•

(for example: LANGUAGE or USER’S SET UP)

1 REC button– Press for manual recording.

OTR button– Activates One Touch Recording.

(only on the TV/VCR)

2 RECORD indicator– Flashes during recording.

Lights up in the Stand-by mode for Timer Recording.

3 EARPHONE jack– Connects to earphones (not

supplied) for personal listening. The size of jack is 1/8” monaural (3.5mm).

4 Cassette compartment 5 Number buttons– Press to select desired channels

for viewing or recording. To select channels from 1 to 9, first press the 0 button and then 1 to 9.

+100 button– When selecting cable channels

which are higher than 99, press this button first, then press the last two digits. (To select channel 125, first press the “+100” button then press “2” and “5”).

MENU button– Press to display the main menu o

the TV screen.

DISPLAY button– Display the counter or the cur

rent channel number and current time on the TV screen.

SPEED button– Press to choose the desired

recording speed:SP/SLP.

T-PROG. CLEAR button–

ting of timer program.

COUNTER RESET button– Press to reset counte

to 0:00:00.

GAME button– Sets the game mode and externa

input mode at the same time.

TIME SEARCH button– Press to activate Time

Search mode.

PAUSE/STILL button– Press to temporarily stop

the tape during the recording or to view a still pi ture during playback.

MUTE button– Mutes the sound. Press it again

resume sound.

CHANNEL RETURN button– Press to go back to

WAKE UP/SLEEP button– Sets the Wake up or

Sleep Timer.

Power cord– Connect to a standard

(120V/60Hz).

ANT. terminal– Connect to an antenna or cable

system.

Press to cancel a set-

AC outlet

1-5-4 T5400IB

•

AUDIO

EARPHONE

VIDEO

STOP/EJECT

REW

PLAY

F.FWD REC/OTRCHANNEL

VOLUME

POWER

1 92 3 4 5 6 7 8131011 1412

POWER

WAKE-UP

/SLEEP

123

456

789

+100

EJECT

CHANNEL

RETURN

REW

PLAY

STOP

F.FWD

GAME

RECORD

PAUSE/STILL

SPEED

TIME SEARCH

CHANNEL

T-PROG.

CLEAR

COUNTER

RESET

DISPLAY MUTE

VOLUME

11 18

19 20

22 21

[ EWC1303 ]

This manual covers 13" and 19". The operation of the two models are exactly the same except the appearance. 19" model is illustrated in this manual.

OTE:

We do not recommend the use of universal remote controls. Not all of the functions may be controlled with a universal remote control.

TV/VCR FRONT PANEL

REMOTE CONTROL

VIDEO input jack– Connect to the video output

jack of your video camera or another VCR.

AUDIO input jack– Connect to the audio output

jack of your audio equipment, video camera or another VCR.

POWER button– Press to turn TV/VCR on and

off. Press to activate timer recording.

VOLUME

buttons– Adjust the volume

level.

CHANNEL K / L buttons– Press to select the

desired channels for viewing or recording. You may display the main menu on the TV scree

by pressing repeatedly this button on the TV/VC

TRACKING function– Press to minimize video

‘noise’ (lines or dots on screen) during playback mode.

Remote Sensor Window– Receives the infrared

signals from the remote control.

STOP button– Press to stop the tape motion.

EJECT button– Press in the Stop mode to remov

tape from TV/VCR.

button–

Press to select setting modes from the on screen

•

menu. Press to enter digits when setting program.

•

(for example: setting clock or timer program)

1-5-5 T5400IB

REAR VIEW

ANT.

2726

1 1

8 REW button– Press to rewind the tape, or to view

the picture rapidly in reverse during playback mode. (Rewind Search)

button–

Press to select a mode from a particular menu.

•

(for example: LANGUAGE or USER’S SET UP)

PLAY button– Press to begin playback.

K button–

Press to select setting modes from the on screen

•

menu. Press to enter digits when setting program.

•

(for example: setting clock or timer program)

0 F.FWD button– Press to rapidly advance the tape,

or to view the picture rapidly in forward during playback mode. (Forward Search)

button–

When setting program (for example: setting clock

•

or timer program), press to determine your selection and proceed to the next step you want to input.

Press to determine setting modes from on screen

•

menu. Press to select a mode from a particular menu.

•

(for example: LANGUAGE or USER’S SET UP)

1 REC button– Press for manual recording.

OTR button– Activates One Touch Recording.

(only on the TV/VCR)

2 RECORD indicator– Flashes during recording.

Lights up in the Stand-by mode for Timer Recording.

3 EARPHONE jack– Connects to earphones (not

supplied) for personal listening. The size of jack is 1/8” monaural (3.5mm).

4 Cassette compartment 5 Number buttons– Press to select desired channels

for viewing or recording. To select channels from 1 to 9, first press the 0 button and then 1 to 9.

+100 button– When selecting cable channels

which are higher than 99, press this button first, then press the last two digits. (To select channel 125, first press the “+100” button then press “2” and “5”).

MENU button– Press to display the main menu o

the TV screen.

DISPLAY button– Display the counter or the cur

rent channel number and current time on the TV screen.

SPEED button– Press to choose the desired

recording speed:SP/SLP.

T-PROG. CLEAR button–

ting of timer program.

COUNTER RESET button– Press to reset counte

to 0:00:00.

GAME button– Sets the game mode and externa

input mode at the same time.

TIME SEARCH button– Press to activate Time

Search mode.

PAUSE/STILL button– Press to temporarily stop

the tape during the recording or to view a still pi ture during playback.

MUTE button– Mutes the sound. Press it again

resume sound.

CHANNEL RETURN button– Press to go back to

WAKE UP/SLEEP button– Sets the Wake up or

Sleep Timer.

Power cord– Connect to a standard

(120V/60Hz).

ANT. terminal– Connect to an antenna or cable

system.

Press to cancel a set-

AC outlet

1-5-6 T5400IB

CABINET DISASSEMBLY INSTRUCTIONS

1. Disassembly Flowchart

This flowchart indicates the disassembly s teps for the cabinet parts and the CBA in order to gain acces s to item(s) to be serv iced. W hen reasse mbling, f ollow 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

[2] Tray Chassis

[3] Deck Unit

[4] Main CBA

[5] CRT

2. Disassembly Method

REMOVAL

ID/

LOC.

No.

[1]

[2]

PART

Rear Cabinet

Tray Chassis

REMOVE/ *UNHOOK/

Fig.

UNLOCK/RELEASE/

No.

UNPLUG/DESOLDER

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

Anode Cap, CN505,

3, 5

CRT CBA, CN601, CN801, CN571

Note

(1): Order of s teps in Procedure . When reassem bling,

follow the steps in reverse order.These numbers are also used as the Identifi ca tio n (loc ati on) No. of

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

unlocked, released, unplugged, unclamped, or

desoldered.

S=Screw, P=Spring, L=Locking Ta b, CN=Connec-

tor, *=Unhook, Unlock, Release, Unplug, or

Desolder

2(S-2) = two screws (S-2) (5): Refer to the following Reference Notes in the

Table.

Reference Notes in the Table

1. Removal of the Rear Cabinet.

Remove screws 4(S-1) and (S-2).

Caution !

Discharge the Anode Lead of the CRT with the CRT Ground Wire before removing the Anode Cap.

2. Removal of the Tray Chassis.

Discharge the Anode Lead of the CRT with the CRT Ground Wire before removing the Anode Cap. Disconnect the following: Anode Cap, CN505, CRT CBA, CN601, CN571 and CN801. Then, pull the Tray Chassis backward.

3. Removal of the Deck Unit.

Remove screws 7(S-3 ) and 2(S-4) . Then, desold er connectors (CL201, CL40 1, CL 402 , CL 403) a nd li ft up the Deck Unit.

4. Removal of the Main CBA.

Remove screws 6(S-5) and pull up the Main CBA.

5. Removal of the CRT.

Remove screw s 4( S-6 ) an d pu ll t he CRT backward.

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

[3] Deck Unit 3, 5

[4] Main CBA 3, 5 6(S-5) 4 [5] CRT 4 4(S-6) 5

↓

(1)

↓

(2)

Desolder (CL201, CL401, CL402, CL403)

↓

(3)

↓

(4)

↓

(5)

1-6-1 T5407DC

S-1

-2

S-2

[1] REAR CABINE

S-1

Fig. 1

S-1

[1] REAR CABINET

Fig. 2

1-6-2 T5407DC

[2] TRAY CHASS

S-3

[4] MAIN CBA

S-5

S-3

[3] DECK UNIT

S-3

S-5

S-4

S-5

Fig. 3

1-6-3 T5407DC

S-6

ANODE CAP.

S-6

CRT CB

S-6

[5] CRT

S-6

Fig. 4

1-6-4 T5407DC

ANODE

CRT

GND

MAIN CBA

CN505

SCREEN

TO SPEAKER

CN801

CL501A

FOCUS

CL403

CL502A

CRT CBA

TO DEGAUSS COIL

CL502B

CN601

AC CORD

FE HEAD

CL401

CL201

CYLINDER ASSEMBLY

CL402

AC HEAD ASSEMBLY

CN571

CL501B

CAPSTAN MOTOR

DECK UNIT

Fig. 5

1-6-5 T5407DC

ELECTRICAL ADJUSTMENT INSTRUCTIONS

General Note: "CBA" is abbreviation for "Circuit Board

Assembly."

NOTE:

Electrical adjustments are requir ed 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 attem pt thes e adj ustmen ts unles s the proper equipment is available .

Test Equipment Required

1. NTSC Pa ttern 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

How to make service remote control unit:

1. Prepare normal remote control unit. (Part No. N0107UD) Remove 3 screws from the back lid. (Fig. 1-1)

SCREW

How to Set up the Service mode:

Service Mode:

1. Use the service remote control unit.

2. Turn the power on.

3. Press "WAKE-UP/SLEEP" button on the service remote control unit.

1. DC 105V (+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

D613

Cathode

(+B)

C613(-)

(GND)

Tape M. EQ. Spec.

---

Note: D613 Cathode (+B), C613(-) (GND),

VR601 --- Main CBA

1. Connect the unit to AC Power Outlet.

2. Conne ct DC Volt Meter to D613 Cathode (+ B) and C613(-) (GND).

3. Adj ust V R601 so that the vo ltage of D613 Cathode (+B) becomes +105±0.5V DC.

VR601 --- -----

DC Voltmeter

Plastic Tip Driver

+105±0.5V DC

2-1. H Adjustment

Remote control unit (Bottom)

2. Remote control unit: Part No. N0107UD Add J1 (Jumper Wire) to the remote control CBA. (Fig. 1-2)

J 1

Remote control CBA

Remote control unit: Part No. N0150UD Cut off pin 10 of the remote con trol m ic ropr oces so r and short circuit pins 10 and 17 of the microprocessor with a jumper wire

Fig. 1-1

Fig. 1-2

Purpose: To get correct hor i zo nt a l po si t ion an d si ze 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 --- Main CBA

1. Connect Frequency Counter to R583.

2. Set the unit to the VIDEO mode and no input is necessary. Enter the Service mode. (See page 1-4-1.)

1-7-1 T5401EA

CH o / p

buttons

Video ---

3. Operate the unit for at least 20 minutes.

" b

)

4. Press "2" button on the remote control unit and

2-3. Y DL Time/Y SW LPF

Adjustment

select H-Adj M ode. (Press "2" button , then displa y will change H-Adj and AGC.)

5. Press "CH o / p" buttons on the remote control unit so that the display will change "0" to "7." At this moment, choose di spla y "0" to " 7" when the Frequency counter display is closest to

15.734kHz±300Hz.

6. Turn the power off and on again.

2-2. C-Trap Adjustment

Purpose: To get minimum le akage of t he color signal

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

incorrect, stripes will appear on the screen.

Purpose: To get minimum leakag e of the color signal carrier.

Symptom of Misadjustment: If Y DL Time Adjustment is incorrect, stripes will appear on the screen.

1. Enter the Service Mode. (See page 1-4-1.)

2. Y DL Time Adjustment: Press "0" button on the service remote c ontro l uni t twic e to s how "D-T " 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.

3. Y DL Time Adjustment: Select "2" by pressing "CH o / p" butto ns on the service rem ote control to enter Y DL Time Adjustment mode.

Test point Adj. Point Mode Input

Y SW LPF Adjustment: Select "1" by pressing "CH o / p" butto ns on the service rem ote control

J271

(B-OUT)

CH o / p

buttons

--- Color Bar

to enter Y SW LPF Adjustment mode.

4. If needed, perform the following.

Tape M. EQ. Spec.

C-TRAP Adjustment (Factory mode

utton

C-TRP 0 C-TRP 1

CH button

---

Oscilloscope

Pattern Generator

---

Figure

CH button

minimum

"0" button

Y DL Time Adj TV Adjustment

D-T TV 0 D-T TV 1

button

Fig. 2

CH button

Note: J271 (B-Out)--- Main CBA

1. Connect Oscilloscope to J271.

2. Input a color bar signal from RF input. Enter the Service mode. (See page 1-4-1.)

3. Press "0" button on the remote control unit and

"0" button

Y DL Time Adj EXT/PB Adjustment

D-T EXT 0 D-T EXT 1

button

select C-TRAP Mode.

4. Press "CH o / p" buttons on the remote control

CH button

unit so that the carrier leakage B-Out (3.58MHz) value becomes minimum on the oscilloscope.

5. Turn the power off and on again.

"0" button

Y SW LPF Adjustment

Y SW

button

0 Y SW 1

CH button

1-7-2 T5401EA

3. V. Size Adjustment

5. H. Shift 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

---

Tape M. EQ. Spec.

--- Pattern Generator 90±5%

1. Enter the Service mode. (See page 1-4-1.) 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.

CH o / p

buttons

--- Monoscope

4. V. Shift Adjustment

Purpose: To obtain correct vertical position of screen

image. Symptom of Misadjustment: If V. position is incor-

rect, vertical positio n of image on the screen may not be properly displayed.

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 90±5%

1. Enter the Service mode. (See page 1-4-1.) 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.

CH o / p

buttons

--- Monoscope

6. Cut-off Adjustment

Purpose: To adjust the beam cu rrent of R, G, B, and

screen voltage. Symptom of Misadjustment: White color may be

reddish, greenish or bluish.

Test point Adj. Point Mode Input

Te st poi nt Adj. Point Mode Input

---

Tape M. EQ. Spec.

--- Pattern Generator 90±5%

1. Enter the Service mode. (See page 1-4-1.) 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 botto m of the monoscope pattern are equal to each other.

CH o / p

buttons

--- Monoscope

--- Screen-Control Ext.

Tape M. EQ. Spec.

--- Pattern Generator

Figure

ATTERN GENERATOR

EXT. INPUT

See Reference

Notes below

Black

Raster /

White

Raster

Fig. 3

1-7-3 T5401EA

Notes: Screen Control FBT --- MAIN CBA

F.B.T= Fly Back Transformer Use the Remote Control Unit

1. Degauss the CRT and allow CRT to operate f or 20 minutes before starting the alignment.

2. Set the sc reen control to minimum position. Input the Black raster signal from RF input.

3. Enter the Service Mode. (See page 1-4-1.) Dimmed horizontal line appears on the CRT.

4. Press the "VOL p" button. (Press "VOL p" then display will change CUT OFF/ DRIVE, VCO adjustment, Analog OSD adjustment).

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

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

7. Choose CUT OFF/DRIVE mode then press "2" button. This adjustment mo de is CUT OFF (G). Pres s "CH o / p" until the horizontal line becomes white.

8. 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.

9. Input the White Raster Signal from Video In.

10.Choose CUT OFF/DRIVE mode then press "4." Adjust the RED DRIVE as needed with the "CH o / p" buttons to get the followin g value, X= 286, Y=

294.

11.Choose CUT OFF/DRIVE mode then press "5." Adjust the BLUE DRIVE as needed with the "CH o / p" buttons to get the following value, X= 286.

12.Turn the power off and on again.

7. Sub-Brightness Adjustment

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

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Tape M. EQ. Spec.

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hite

Note: SYMPTE Setup level --- 7 IRE

1. Enter the Service Mode. (See page 1-4-1.) Then input SYMPTE signal from RF input.

2. Press MENU button. (Press MENU button then display will change B R T, C N T, T N T, V-T and SHP). 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

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SYMPTE

7.5IRE

See below

Black

This b just visible

Fig. 4

1-7-4 T5401EA

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