TEAC CTF-687 Service manual

SERVICE MANUAL

CTF687

68CM CTV

APR03 SERVCTF687

TEAC

SERVICE MANUAL

CT-F687

1. Caution……………………………………………………………2

2. Specification………………………………………………………6

3. BOM List…………………………………………………………13

4. Alignment Procedure………………………………………….…24

5. Block Diagram……………………………………………………29

6. Schematic Diagram………………………………………………30

7. PCB Layout………….……………………………………………31

8. Exploded V ie w Diagram………………………Temporary Absence

This manual is the latest at the time of printing, and does not include the modifi ca tio n w hich ma y b e made after the pri nti ng, by the consta nt improvement of product.

CAUTION:

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

CAUTION: TO REDUCE THE RISK OF

CAUTION

RISK RISK OF OF ELECTRIELECTRICC

SHOCK SHOCK DO DO NOT NOT OPEN.OPEN.

The lighting flash with arrowhead symbol, with an equilateral triangle is intended to alert the user to the presence of uninsulated voltage within the product s enclosure that may be of sufficient magnitude to constitute a risk of electric shock to the person.

The exclamation point within an equilateral triangle is intended to alert the user to the presence of important operating and maintenance (servicing) instructions in the literature accompanying the appliance.

ELECTRICAL SHOCK, DO NOT REMOVE COVER (OR BACK). NO USER SERVICEABLE PARTS INSIDE. REFER SERVICING TO QUALIFIED SERVICE PERSONNEL.

dangerous

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

EXPOSE THIS APPLIANCE TO RAIN OR MOISTURE.

IMPORTANT SAFETY INSTRUCTIONS

CAUTION:

Read all of these instructions. Save these instructions for later use . Follow all Warnings and Instructions marked on the audio equipment.

1. Read Instructions- All the safety and operating instructions should be read before the product is operated.

2. Retain Instructions- The safety and operating instructions should be retained for future reference.

3. Heed Warnings- All warnings on the product and in the operating instructions should be adhered to.

4. Follow Instructions- All operating and use instructions should be followed.

FOR YOUR PERSONAL SAFETY

1. When the power cord or plug is damaged or frayed, unplug this television set from the wall outlet and refer servicing to qualified service personnel.

2. Do not overload wall outlets and extension cords as this can result in fire or electric shock.

3. Do not allow anything to rest on or roll over the power cord, and do not place the TV where power cord is subject to traffic or abuse. This may result in a shock or fire hazard.

4. Do not attempt to service this television set yourself as opening or removing covers may expose you to dangerous voltage or other hazards. Refer all servicing to qualified service personnel.

5. Never push objects of any kind into this television set through cabinet slots as they may touch dangerous voltage points or short out parts that could result in a fire or electric shock. Never spill liquid of any kind on the television set.

6. If the television set has been dropped or the cabinet has been damaged, unplug this television set from the wall outlet and refer servicing to qualified service personnel.

7. If liquid has been spilled into the television set, unplug this television set from the wall outlet and refer servicing to qualified service personnel.

8. Do not subject your television set to impact of any kind. Be particularly careful not to damage the picture tube surface.

9. Unplug this television set from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. Use a damp cloth for cleaning.

10.1. Do not place this television set on an unstable cart, stand, or table. The television set may fall, causing serious injury to a child or an adult, and serious damage to the appliance. Use only with a car t or stand recommended by the manufacturer, or sold with the television set. Wall or shelf mounting should follow the manufacturer s instructions, and should use a mounting kit approved by the manufacturer.

10.2. An appliance and car t combination should be moved with care. Quick stops, excessive force, and uneven surfaces may cause the appliance and cart combination to overturn.

PROTECTION AND LOCATION OF YOUR SET

11. Do not use this television set near water ... for example, near a bathtub, washbowl, kitchen sink, or laundry tub, in a

wet basement, or near a swimming pool, etc. Never expose the set to rain or water. If the set has been exposed to rain or water, unplug the set from the wall outlet and refer servicing to qualified service personnel.

12. Choose a place where light (artificial or sunlight) does not shine directly on the screen.

13. Avoid dusty places, since piling up of dust inside TV chassis may cause failure of the set when high humidity persists.

14. The set has slots, or openings in the cabinet for ventilation purposes, to provide reliable operation of the receiver, to protect it from overheating. These openings must not be blocked or covered.

Never cover the slots or openings with cloth or other material. Never block the bottom ventilation slots of the set by placing it on a bed, sofa, rug, etc. Never place the set near or over a radiator or heat register. Never place the set in enclosure, unless proper ventilation is provided.

a built-in

PROTECTION AND LOCATION OF YOUR SET

15.1. If an outside antenna is connected to the television set, be sure the antenna system is grounded so as to provide some

protection against voltage surges and built up static charges, Section 810 of the National Electrical Code, NFPA No. 70-1975, provides information with respect to proper grounding of the mast and supporting structure, grounding of the lead-in wire to an antenna discharge unit, size of grounding conductors, location of antenna discharge unit, connection to grounding electrode, and requirements for the grounding electrode.

EXAMPLE OF ANTENNA GROUNDING AS PER NATIONAL ELECTRICAL CODE INSTRUCTIONS

EXAMPLE OF ANTENNA GROUNDING AS PER

NATIONALELECTRICAL CODE

ANTENNA LEAD- INWIRE

GROUND CLAMP

ELECTRIC SERVICE

EQUIPMENT

NEC-NATIONALELECTRICAL CODE

ANTENNA DISCHARGE UNIT (NEC SECTION 810-20)

GROUNDING CONDUCTORS (NECSECTION 810-21)

GROUND CLAMPS

POWER SERVICE GROUNDING ELECTRODE SYSTEM (NEC ART 250. PARTH)

15.2. Note to CATV system installer : (Only for the television set with CATV reception)

This reminder is provided to call the CATV system attention to Article 820-40 of the NEC that provides

installer s guidelines for proper grounding and, in particular, specifies that the cable ground shall be connected to the grounding system of the building, as close to the point of cable entry as practical.

16. An outside antenna system should not be located in the vicinity of overhead power lines or other electric lights or power circuits, or where it can fall into such power lines or circuits. When installing an outside antenna system, extreme care should be taken to keep from touching such power lines or circuits as contact with them might be fatal.

17. For added protection for this television set during a lightning storm, or when it is left unattended and unused for long periods of time, unplug it from the wall outlet and disconnect the antenna. This will prevent damage due to lightning and power-line surges.

OPERATION OF YOUR SET

18.

This television set should be operated only from the type of power source indicated on the marking label. If you are not sure of the type of power supply at your home, consult your television dealer or local power company. For television sets designed to operate from battery power, refer to the operating instructions.

19. If the television set does not operate normally by following the operating instructions, unplug this television set from the wall outlet and refer servicing to qualified service personnel. Adjust only those controls that are covered in the operating instructions as improper adjustment of other controls may result in damage and will often require extensive work by a qualified technician to restore the television set to normal operation.

20. When going on a holiday : If your television set is to remain unused for a period of time, for instance, when you go on a holiday, turn the television set and unplug the television set from the wall outlet.

off

IF THE SET DOES NOT OPERATE PROPERLY

21. If you are unable to restore normal operation by following the detailed procedure in your operating instructions, do not attempt any further adjustment. Unplug the set and call your dealer or service technician.

22. Whenever the television set is damaged or fails, or a distinct change in performance indicates a need for service, unplug the set and have it checked by a professional service technician.

23. It is normal for some TV sets to make occasional snapping or popping sounds, particularly when being turned on or off. If the snapping or popping is continuous or frequent, unplug the set and consult your dealer or service technician.

FOR SERVICE AND MODIFICATION

24. Do not use attachments not recommended by the television set manufacturer as they may cause hazards.

25. When replacement parts are required, be sure the service technician has used replacement parts specified by the manufacturer that have the same characteristics as the original part. Unauthorized substitutions may result in fire, electric shock, or other hazards.

26. Upon completion of any service or repairs to the television set, ask the service technician to perform routine safety checks to determine that the television is in safe operating condition.

PRODUCT SPECIFICATION

MODEL：：：： CT-F687

AMBIENT CONDITIONS：

AMBIENT TEMPERATURE：

OPERATING ：：：：-10°°°°C ~ +40°°°°C

STORAGE ：：：：-15°°°°C ~ +45°°°°C

HUMIDITY

OPERATING：＜

STORAGE: ＜＜＜＜90%

AIR PRESSURE: 86kpa ~ 106kpa

PREPARED BY : DATE:

：

：：

：

：：

：＜80%

：＜：＜

APPROVED BY: DATE:

A: GENERAL SPECIFICATION : 1: CRT 14” 20” 21” 25” XX

29” 34” OTHER

2: CHASSIS: DIGITAL

SURROUND SOUND TELETEXT XX

S.VHS OTHER

NICAM STEREO XX

ANALOG

GERMAN STEREO

3: CPU:

TSB M5C01 TSB M5C03 TSB M5ENG TSB M6/M6A TSB M7/M7A TSB M8A TSB M8B TSB CTS-654A TSB M2A SS M4F

PHIL.CTV 222S MIT.(2911) SIE SDA 5352 XX

其他(OTHERS) M13

4: TV BROADCASTING SYSTEM AND COUNTRY

PAL-I XX PAL-DK.BG SECAM-BG SECAM-L SECAM-DK.BG

PAL-N NTSC-M XX

PAL-BG PAL-DK PAL-DK.1

NTSC3.579/4.43 AV MODE 21 MULTI SYSTEM

UK HK GERMAN RUSSIA

CHINA USA E.EUROPE VIETNAM

CANADA DUBAI INDONESIA S.AFRICA

MALAYSIA MID. AMERICA SINGAPORE

AUSTRALIA & NEW ZEALAND TAIWAN MOROCCO

PHILIPPINES

OTHER

ISRAEL

5： RECEIVING CHANNELS

CH21--CH69 CH2--CH12（CCIR）

CHFA-CHS20（FRANCE BAND） CH2--CHS41（HYPER BAND） CH21--CH69 CH21--CH69 CH2--CHS20（CABLE BAND） CH2--CH13（USA BAND）

CH21--CH69 CH14--CH83 CHR1--CHR12（OIRT） CH1--CH12/CH13-CH57（CHINA BAND）

OTHER CATV 470MHz

6： SCANNING LINES AND FREQUENCIES 625 LINES 15.625kHz 50Hz

525 LINES 15.75kHz 60Hz XX

525/625 LINES 15.625kHz /15.75kHz 50/60Hz

7： COLOUR SUB-CARRIER

4.433MHz

3.579MHz

3.58MHz

8： INTERMEDIATE FREQUENCIES PICTURE 39.5MHz

PICTURE 38.9MHz XX

PICTURE 38.0MHz

SOUND 6.0MHz SOUND5.5MHz

SOUND 6.5MHz PICTURE 45.75MHz SOUND 4.5MHz OTHER AM SOUND 6.5MHz 9： POWER CONSUMPTION ：

65W 70W 75W 80W 110W 120W

130W 140W 180W 190W OTHER

10： POWER SOURCE ： AC 120V 60Hz±10％ AC 200V 50Hz±10％ AC 220V 50Hz±10％

AC 220V 50Hz+10％~25％

AC 240V 50Hz±10％

AC 110V-240V 50/60Hz±10％

OTHER

11： AUDIO OUTPUT POWER (7％THD)

13”& 14”---1W

20”& 21”---2W

20”& 21”---2W + 2W (R + L)

25”---4W + 4W (R + L)

29” >=6W + 6W (R + L)

34”---8W + 8W(R + L) OTHER 12： AERIAL INPUT IMPEDANCE

75 Ω UNBALANCED DIN JACK ANT.INPUT75 75Ω UNBALANCED F TYPE ANT.INPUT FOR NTSC 300 Ω BALANCED（TWO TERMINALS ANT.INPUT） OTHER 13： PRODUCT SAFETY REQUIREMENT BS APPROVAL

VDE APPROVAL UL APPROVAL

CHINA APPROVAL XX

CB APPORVAL XX

OTHER SAA EMC

14： PRODUCT EMC/EMI REQUIREMENT

FTZ APPOVAL FCC APPROVAL XX

CHINA APPOVAL OTHER B： BASIC FEATURES OF CONTROLLER

1： CHANNEL TUNING METHOD

VOLTAGE SYNTHESIZER (V.S.)

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