Sony KV-TF21P11, KV-TF21M61 Self-diagnosis function Troubleshooting, Intervals, Indicator flashes

Page 15

Additional Information

Self-diagnosis function

Troubleshooting

If you find any problem while viewing your TV, please check the following guide. If any problem persists, contact your Sony dealer .

Your TV is equipped with a self-diagnosis function. If there is a problem with your TV, the u indicator flashes red. The number of

Symptom

Solutions

Possible cause

– 15 –

times the u indicator flashes indicates the possible causes.

Front of TV

u indicator

Snowy picture

Noisy sound

Distorted picture

Noisy sound

Check the antenna cable and connection on the TV, VCR and on the wall. (page 4)

Press SELECT until “MANUAL PROGRAM” appears on the screen then preset the channel again. (page 9)

Check the antenna type (VHF/UHF). Contact a Sony dealer for advice.

Adjust the antenna direction. Contact a Sony dealer for advice.

Try using a booster.

Turn off or disconnect the booster if it is in use.

Connection is loose or the cable is damaged.

Channel presetting is inappropriate or incomplete.

The antenna type is inappropriate.

The antenna direction is inappropriate.

Signal transmission is low.

Broadcast signals are too strong.

1

Check that the u indicator flashes red a number of times between 3-second

 

intervals.

2

Count the number of times the u indicator flashes.

Additional

4

Inform your nearest Sony service center about the number of times the

3

Press U (main power) to turn off your TV.

Information

 

u indicator flashes.

 

 

Be sure to note the model name and serial number located on the rear of your TV.

Additional Information 17

Good picture

• If the sound of all the channels are

• The TV system setting or

 

noisy, check the TV system (TV SYS)

channel presetting is

 

setting (page 10), then press AUTO

inappropriate or

 

PROGR to preset the channels again

incomplete.

 

(page 8).

 

Noisy sound

• If the sound of some channels are noisy,

 

 

select the channel, then select the

 

 

appropriate TV system (TV SYS).

 

 

(page 10)

 

No picture

• Check the power cord, antenna and the

• The power cord, antenna

 

VCR connections.

or VCR is not connected.

 

• Press u (power).

• The TV is not turned on.

 

• Press U (main power) on the TV to turn

 

No sound

off the TV for about five seconds, then

 

turn it on again.

 

 

 

18Additional Information

KV-PF21M70/TF21M61/TF21M90/TF21P11 RM-952

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Contents KV-TF21M61 KV-PF21M70 KV-TF21M90 KV-TF21P11 BG-3SCHASSISKV-PF21M70/TF21M61/TF21M90/TF21P11 SpecificationsCircuit Adjustments Table of ContentsDisassembly SET-UP AdjustmentsDiagnostic Test Indicators Self Diagnostic FunctionStopping the STANDBY/TIMER Flash Display of STANDBY/TIMER Light Flash CountHandling of SELF-DIAGNOSTIC Screen Display SELF-DIAGNOSTIC Screen Display+BÊovercurrentÊ»OCP¼ SELF-DIAGNOSTIC CircuitConnect the antenna Getting StartedInsert the batteries into the remote Connecting optional componentsPreset the channels automatically Connecting video equipment using the ò Monitor output jacksPresetting channels Presetting channels automaticallySecuring the TV Skipping program numbers Presetting channels manuallyWatching the TV Additional tasksChanging the on-screen display language Selecting the picture and sound modes Setting the Wake Up timerSetting the Sleep timer Customizing the picture and soundBlocking the channels Adjusting the picture and sound settingsIndicator flashes Self-diagnosis function TroubleshootingCount the number of times the u indicator flashes Press U main power to turn off your TVTroubleshooting Remote Control Identifying parts and controlsFront panel KV-TF21M61/TF21M90 PF21M70/TF21M61/TF21M90/TF21P11 RM-952 VHF LOW Auto I D/K M PIC Rotation Press U to turn on the TV. When the TV isRepeatedly until you get Appears Press + or to select Desired surround sound Selecting the surround modePress Select repeatedly Until SurroundPress A/B repeatedly until you receive the sound you want Selecting a stereo or bilingual programAdditional Teletext tasks Using FastextViewing Teletext Displaying TeletextAdditional Self-diagnosis functionTroubleshooting Shortcuts Check the antenna directionCheck connection on the AC socket Press ü + to increase the volume level Select button 2headphone jack Front panel KV-PF21M70/TF21M61/TF21M90/TF21P11Jump Sound Progr KV-TF21P11 Your Securing the TV Appears Press + or Press Progr +/- or Number buttons untilDesired program number appears Language / English Your New Picture PF21M70/TF21M61/TF21M90/TF21P11 RM-952 KV-PF21M70/TF21M61/TF21M90/TF21P11 Press U main power to turn off your TV Indicator flashesPF21M70/TF21M61/TF21M90/TF21P11 RM-952 Sound Progr Mode Rear Cover Removal Chassis Assy RemovalBracket Removal KV-TF21M61/TF21M90 Service Position Replacement of PartsTerminal Bracket Removal Picture Tube Removal Degauss Coil Removal∙ HOW to Handle AN ANODE-CAP ∙ Removal of ANODE-CAP ∙ Removing ProceduresBeam Landing Section SET-UP AdjustmentsHorizontal and Vertical Static Convergence ConvergenceYCH TLV G2 Screen and White Balance Adjustments Focus AdjustmentRM-952 Adjustments with CommanderAdjustment Method Adjustment Item Table INF INS TXT OPM OPB KV-PF21M70/TF21M61/TF21M90/TF21P11 Board Adjustment After IC003 Memory Replacement Picture Quality Adjustments SUB Color AdjustmentSUB HUE Adjustment Bell Filter AdjustmentItem Number 00 0B Picture Distortion AdjustmentSTV5112 TU101 BTF-WG441IIC201 TA8248KSecam Schematic Diagrams and Printed Wiring BoardsBoard IC001 CXP86449-623S DTC114EK SemiconductorsREF. NO. Part no Description Beznet Assy19 4-057-714-01 Piece ASSY, TLH Correction BUTTON, Multi BUTTON, PowerREF. NO. Part no Description Remark Beznet Assy KV-TF21P11HOLDER, FBT Description RemarkElect HOLDER, LEDMylar Elect 1MFCarbon CeramicPLUG, Connector 3P Diode PIN, Connector 4PPLUG, Connector 3P PLUG, Connector 6P100 101 102 Metal ChipMetal 103 VIBRATOR, Ceramic 104Tuner TUNER, FSS BTF-LG433 CrystalOnly 105106 Diode RD10SB 107108 Photo Coupler ON3171-R IC LinkTransistor 2SC2712-YG 109 110 111 Carbon Variable Resistor 112SOCKET, CRT Coil Transistor 2SC2611113 C5 Except KV-PF21M70114 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.