Sony KV-TF21M61, KV-TF21P11, KV-PF21M70 Self Diagnostic Function, Diagnostic Test Indicators

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KV-PF21M70/TF21M61/TF21M90/TF21P11

RM-952

SELF DIAGNOSTIC FUNCTION

The units in this manual contain a self-diagnostic function. If an error occurs, the STANDBY/TIMER lamp will automatically begin to flash.

The number of times the lamp flashes translates to a probable source of the problem. A definition of the STANDBY/TIMER lamp flash indicators is listed in the instruction manual for the user’s knowledge and reference. If an error symptom cannot be reproduced, the remote commander can be used to review the failure occurrence data stored in memory to reveal past problems and how often these problems occur.

1.DIAGNOSTIC TEST INDICATORS

When an errors occurs, the STANDBY/TIMER lamp will flash a set number of times to indicate the possible cause of the problem. If there is more than one error, the lamp will identify the first of the problem areas.

Result for all of the following diagnostic items are displayed on screen. No error has occured if the screen displays a “0”.

Diagnostic

No. of times

Self-diagnostic

Probable

Detected

Item

STANDBY/TIMER

display/Diagnostic

Cause

Symptoms

Description

lamp flashes

result

Location

 

 

 

 

 

 

• Power does not

Does not light

—

• Power cord is not plugged

• Power does not come on.

turn on

 

 

in.

• No power is supplied to the

 

 

 

• Fuse is burned out F4601

TV.

 

 

 

(F Board)

• AC power supply is faulty.

 

 

 

 

 

• +B overcurrent

2 times

002:000 or

• H.OUT Q511 is shorted.

• Power does not come on.

(OCP) or

 

002:001~255

(A board)

• Load on power line is

overvoltage

 

003:001~255

• IC1800 is shorted. (C5 board

shorted.

(OVP)

 

004:001~255

(except PF21M70)/

• Has entered standby state

• Vertical deflection

 

at the same time

(C3 Board (KV-PF21M70)).

after horizontal raster.

stopped

 

 

• -13V is not supplied.

• Vertical deflection pulse is

• Horizontal

 

 

(A board)

stopped.

deflection

 

 

• IC 503 faulty (A board)

• Power line is shorted or

overdrive

 

 

• IC 301 faulty (A board)

power supply is stopped.

 

 

 

 

 

• White balance

5 times

005:000 or

• G2 is improperly adjusted.

• No raster is generated.

failure (no

 

005:001~225

(Note 2)

• CRT cathode current

PICTURE)

 

 

• CRT problem.

detection reference pulse

 

 

 

• Video OUT IC701 is faulty.

output is small.

 

 

 

(C5 board)

 

 

 

 

• IC301 is faulty. (A board)

 

 

 

 

• No connection A board to

 

 

 

 

C5/C3 boards.

 

 

 

 

 

 

• Micro reset

—

101:00 or

• Discharge CRT

• Power is shut down shortly,

 

 

101:001~225

(C5/C3 Boards)

after this return back to

 

 

 

• Static discharge

normal.

 

 

 

• External noise

• Detect Micro latch up.

 

 

 

 

 

Note 1: If a + B overcurrent is detected, stoppage of the vertical deflection is detected simultaneously.

The symptom that is diagnosed first by the microcontroller is displayed on the screen. Note 2: Refer to screen (G2) Adjustment in section 3-4 of this manual.

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Contents BG-3SCHASSIS KV-TF21M61 KV-PF21M70 KV-TF21M90 KV-TF21P11Specifications KV-PF21M70/TF21M61/TF21M90/TF21P11Table of Contents DisassemblySET-UP Adjustments Circuit AdjustmentsSelf Diagnostic Function Diagnostic Test IndicatorsDisplay of STANDBY/TIMER Light Flash Count Stopping the STANDBY/TIMER FlashSELF-DIAGNOSTIC Screen Display Handling of SELF-DIAGNOSTIC Screen DisplaySELF-DIAGNOSTIC Circuit +BÊovercurrentÊ»OCP¼Getting Started Connect the antennaConnecting optional components Preset the channels automaticallyConnecting video equipment using the ò Monitor output jacks Insert the batteries into the remotePresetting channels automatically Presetting channelsSecuring the TV Presetting channels manually Skipping program numbersAdditional tasks Watching the TVChanging the on-screen display language Setting the Wake Up timer Setting the Sleep timerCustomizing the picture and sound Selecting the picture and sound modesAdjusting the picture and sound settings Blocking the channelsSelf-diagnosis function Troubleshooting Count the number of times the u indicator flashesPress U main power to turn off your TV Indicator flashesTroubleshooting Identifying parts and controls Remote ControlFront panel KV-TF21M61/TF21M90 PF21M70/TF21M61/TF21M90/TF21P11 RM-952 VHF LOW Auto I D/K M Press U to turn on the TV. When the TV is PIC RotationRepeatedly until you get Selecting the surround mode Press Select repeatedlyUntil Surround Appears Press + or to select Desired surround soundSelecting a stereo or bilingual program Press A/B repeatedly until you receive the sound you wantUsing Fastext Viewing TeletextDisplaying Teletext Additional Teletext tasksSelf-diagnosis function AdditionalCheck the antenna direction Troubleshooting ShortcutsCheck connection on the AC socket Press ü + to increase the volume level Front panel KV-PF21M70/TF21M61/TF21M90/TF21P11 Select button 2headphone jackJump Sound Progr KV-TF21P11 Your Securing the TV Number buttons until Appears Press + or Press Progr +/- orDesired program number appears Language / English Your New Picture PF21M70/TF21M61/TF21M90/TF21P11 RM-952 Press U main power to turn off your TV Indicator flashes KV-PF21M70/TF21M61/TF21M90/TF21P11PF21M70/TF21M61/TF21M90/TF21P11 RM-952 Sound Progr Mode Chassis Assy Removal Rear Cover RemovalBracket Removal KV-TF21M61/TF21M90 Replacement of Parts Service PositionTerminal Bracket Removal Degauss Coil Removal Picture Tube Removal∙ Removal of ANODE-CAP ∙ Removing Procedures ∙ HOW to Handle AN ANODE-CAPSection SET-UP Adjustments Beam LandingConvergence Horizontal and Vertical Static ConvergenceYCH TLV Focus Adjustment G2 Screen and White Balance AdjustmentsAdjustments with Commander RM-952Adjustment Method Adjustment Item Table INF INS TXT OPM OPB KV-PF21M70/TF21M61/TF21M90/TF21P11 Picture Quality Adjustments SUB Color Adjustment SUB HUE AdjustmentBell Filter Adjustment Board Adjustment After IC003 Memory ReplacementPicture Distortion Adjustment Item Number 00 0BTU101 BTF-WG441I IC201TA8248K STV5112Schematic Diagrams and Printed Wiring Boards SecamBoard IC001 CXP86449-623S Semiconductors DTC114EKBeznet Assy REF. NO. Part no Description19 4-057-714-01 Piece ASSY, TLH Correction BUTTON, Power REF. NO. Part no Description RemarkBeznet Assy KV-TF21P11 BUTTON, MultiDescription Remark ElectHOLDER, LED HOLDER, FBTElect 1MF CarbonCeramic MylarPIN, Connector 4P PLUG, Connector 3PPLUG, Connector 6P PLUG, Connector 3P Diode100 101 Metal Chip 102Metal 103 104 TunerTUNER, FSS BTF-LG433 Crystal VIBRATOR, Ceramic105 Only106 107 Diode RD10SBPhoto Coupler ON3171-R IC Link 108Transistor 2SC2712-YG 109 110 111 112 SOCKET, CRT CoilTransistor 2SC2611 Carbon Variable ResistorC5 Except KV-PF21M70 113114 115 116

KV-PF21M70, KV-TF21P11, KV-TF21M61 specifications

The Sony KV-TF21M61, KV-TF21P11, and KV-PF21M70 are iconic television models that hold a significant place in the history of consumer electronics. These CRT (cathode-ray tube) televisions were introduced during a time when home entertainment was evolving, showcasing Sony's dedication to delivering high-quality viewing experiences.

The KV-TF21M61 is known for its compact design and impressive image quality, featuring a 21-inch screen size that was perfect for small to medium-sized rooms. Equipped with Sony's advanced Trinitron technology, it delivers vibrant colors and sharp images, making it a favorite among viewers who appreciate clarity and detail. The television features a built-in tuner, allowing users to easily access various TV channels without the need for an external set-top box. The design includes multiple connectivity options, including standard composite inputs, offering versatility for connecting gaming consoles and DVD players.

Similarly, the KV-TF21P11 model carries forward Sony's commitment to exceptional picture quality. With anti-glare screens and enhanced viewing angles, this model ensures that viewers enjoy clear images from different positions in the room. Its user-friendly interface allows easy navigation through channel selections and picture adjustments. The model also includes stereo speakers, providing a richer audio experience that complements the stunning visuals.

On the other hand, the KV-PF21M70 is seen as an evolution of these models, featuring a larger display while retaining the core technological advancements of its predecessors. This unit incorporates Sony's Picture-in-Picture (PiP) feature, allowing users to watch two channels simultaneously or view external input while keeping an eye on live TV. This functionality enhances versatility and user engagement, making it a practical choice for avid viewers who don’t want to miss out on their favorite programs.

All three models are equipped with various sound enhancement features, including bass and treble controls, ensuring users can tailor their audio experience according to their preferences. The robust build quality and reliability typical of Sony products ensure that these televisions remain cherished items even as technology progresses and newer formats emerge.

Overall, the KV-TF21M61, KV-TF21P11, and KV-PF21M70 are more than just old CRT televisions; they represent a significant era in television technology, characterized by brilliant visuals, sound quality, and functional designs that laid the groundwork for modern home entertainment systems. These models remain a testament to Sony's pioneering efforts in the realm of consumer electronics.
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