Philips L9.2A Service Manual Download

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Spare parts list

GB 64

L9.2A

10.

10. Spare parts list

Mono Carrier [A]

Various

0127

3122 358 72141 FUSE HOLDER CLICK

0130

3139 123 21331 INSULATING PLATE

0139

4822 492 70788 IC fixation

0189

3139 124 24322 PCB RELIEF BRACKET

0211

4822 265 20723 Conn. 2p

0218

4822 265 10481 CINCH CONNECTOR 2P

0223

4822 265 10495 Cinch block

0224

4822 267 10676 Conn. 1p

0228

4822 267 10676 Conn. 1p

0229

4822 267 31673 Headphone plug

0230

4822 267 31673 Headphone plug

0231

4822 276 14024 Mains switch

0232

4822 267 31014 HEADPHONE SOCKET

0234

4822 267 10928 Conn. 5p

0267

4822 267 31673 Headphone plug

1000

4822 210 10841 Tuner UV1316/A

1001

4822 242 10314 filter 5,5MHz

1002

4822 242 10316 filter 6,5MHz

1003

4822 242 10357 SAW filter OFWK2960M

1200

4822 242 10315 cer. filter 5,5/5,7/6,5MHz

1200

4822 242 81712 filter 5,5/5,74MHz

1201

4822 242 81301 filter 6,5MHz

1201

4822 242 81572 filter 6,0MHz

1203

4822 242 81978 filter 4,5MHz

1205

4822 242 10695 crystal 4.433619 MHz

1208

4822 242 10776 crystal 3.579545 MHz

1500

4822 070 34002 fuse (4A)

1571

4822 071 51002 fuse (1A)

1572

4822 252 11194 fuse (0,800A)

1600

4822 242 10694 crystal 12.000MHz

1680

4822 276 13775 SWITCH

1681

4822 276 13775 SWITCH

1682

4822 276 13775 SWITCH

1683

4822 276 13775 SWITCH

2001

4822 126 13751 47nF 10% 63V

2002

4822 124 40207 100

F 20% 25V

2003

4822 124 40207 100

F 20% 25V

2004

5322 122 32654 22nF 10% 63V

2005

5322 122 32531 100pF 5% 50V

2006

4822 126 13695 82pF 1% 63V

2008

4822 124 40248 10

F 20% 63V

2009

4822 122 33926 12pF 50V

2010

5322 122 33861 120pF 10% 50V

2011

4822 122 33177 10nF 20% 50V

2012

4822 122 33177 10nF 20% 50V

2013

4822 122 33177 10nF 20% 50V

2110

5322 122 31863 330pF 5% 63V

2111

5322 122 31863 330pF 5% 63V

2112

5322 122 31863 330pF 5% 63V

2113

5322 122 31863 330pF 5% 63V

2114

5322 122 31863 330pF 5% 63V

2115

5322 122 31863 330pF 5% 63V

2135

4822 126 14043 1

F 20% 16V

2136

4822 126 14043 1

F 20% 16V

2137

4822 126 13482 470nF 20% 16V

2172

5322 122 31863 330pF 5% 63V

2173

5322 122 31863 330pF 5% 63V

2174

4822 124 40248 10

F 20% 63V

2176

5322 122 31863 330pF 5% 63V

2177

4822 124 40248 10

F 20% 63V

2201

4822 124 21913 1

F 20% 63V

2202

5322 126 10465 3.9nF 10% 50V

2203

4822 124 40248 10

F 20% 63V

2205

4822 126 13838 100nF 50V 20%

2206

4822 122 33127 2.2nF 10% 63V

2207

4822 124 40207 100

F 20% 25V

2210

4822 126 13482 470nF 20% 16V

2211

4822 126 13482 470nF 20% 16V

2212

5322 126 10511 1nF 5% 50V

2213

4822 126 13482 470nF 20% 16V

2214

5322 122 32654 22nF 10% 63V

2215

4822 124 22652 2.2

F 20% 50V

2216

4822 126 14076 220nF 20% 25V

2217

4822 126 13689 18pF 1% 63V

2218

5322 122 31866 6.8nF 10% 63V

2220

4822 126 13838 100nF 20% 50V

2221

5322 126 10511 1nF 5% 50V

2222

4822 126 13838 100nF 20% 50V

2223

4822 126 13751 47nF 10% 63V

2224

4822 126 13751 47nF 10% 63V

2225

4822 126 13751 47nF 10% 63V

2226

4822 124 40248 10

F 20% 63V

2227

4822 051 20008 jumper (0805)

2227

4822 126 13482 470nF 20% 16V

2228

4822 126 13692 47pF 1% 63V

2229

4822 126 13692 47pF 1% 63V

2230

4822 126 13692 47pF 1% 63V

2231

4822 122 33177 10nF 20% 50V

2232

4822 122 33127 2.2nF 10% 63V

2233

4822 124 21913 1

F 20% 63V

2234

5322 126 10223 4.7nF 10% 63V

2236

4822 126 14076 220nF 20% 25V

2237

5322 122 32531 100pF 5% 50V

2238

4822 126 13486 15pF 2% 63V

2239

5322 121 42386 100nF 5% 63V

2240

5322 126 10511 1nF 5% 50V

2241

5322 126 10511 1nF 5% 50V

2242

4822 124 21913 1

F 20% 63V

2243

4822 126 14076 220nF 20% 25V

2244

4822 124 40248 10

F 20% 63V

2248

4822 126 13486 15pF 2% 63V

2250

5322 122 31863 330pF 5% 63V

2253

5322 122 32654 22nF 10% 63V

2255

5322 122 32531 100pF 5% 50V

2313

4822 122 33216 270pF 5% 50V

2323

4822 122 33172 390pF 5% 50V

2331

5322 122 31863 330pF 5% 63V

2341

4822 126 14588 2.2nF 10% 1KV

2342

4822 121 43526 47nF 5% 250V

2343

4822 121 43526 47nF 5% 250V

2400

4822 121 43526 47nF 5% 250V

2401

4822 121 43526 47nF 5% 250V

2402

5322 122 31863 330pF 5% 63V

2403

4822 122 31169 1.5nF 10% 500V

2405

4822 126 14237 470pF 10% R 2KV

2406

4822 126 13866 4.7nF 10% 1KV

2407

4822 121 70434 11nF 5% 1.6KV

2407

4822 121 70617 10nF 5% 1.6KV

2407

4822 121 70637 8.2nF 5% 1600V

2408

4822 122 30103 22nF 20% 63V

2409

4822 124 11575 47

F 20% 160V

2410

4822 124 11767 470

F 20% 25V

2411

4822 124 40255 100

F 20% 63V

2412

4822 121 51385 33nF 20% 100V

2413

4822 124 11845 22

F 20% 250V

2414

4822 124 81145 1000

F 20% 16V

2415

4822 124 81145 1000

F 20% 16V

2416

4822 126 11503 820pF 10% 2KV

2416

4822 126 12263 220pF 10% 2KV

2416

4822 126 13864 330pF 10% 2KV

2417

4822 124 11767 470

F 20% 25V

2418

4822 126 13482 470nF 20% 16V

2420

4822 121 10781 470nF 5% 250V

2420

4822 126 14097 680nF 5% 250V

2431

4822 124 12438 2.2

F 20% 100V

2432

4822 124 81188 100

F 20% 25V

2460

5322 122 32268 470pF 10% 50V

2461

5322 126 10184 820P 5% 50V

2462

5322 122 32268 470pF 10% 50V

2463

5322 121 42386 100nF 5% 63V

2464

4822 124 40255 100

F 20% 63V

2465

5322 121 42386 100nF 5% 63V

2466

4822 121 42408 220nF 5% 63V

2467

5322 121 42386 100nF 5% 63V

2470

5322 126 10223 4.7nF 10% 63V

2500

4822 126 13589 470nF 275V

2502

4822 126 14153 2.2nF 10% 1KV

2504

4822 126 14153 2.2nF 10% 1KV

2505

4822 126 14153 2.2nF 10% 1KV

2508

4822 124 12415 220

F 20% 400V

2509

4822 126 13517 820pF 10% 1000V

2510

4822 126 13517 820pF 10% 1000V

2517

5322 122 32331 1nF 10% 100V

2518

4822 126 13337 220pF 10% 1KV

2518

4822 126 14149 330pF 10% 1KV

2520

4822 126 13695 82pF 1% 63V

2521

4822 122 33891 3.3nF 10% 63V

2521

5322 126 10223 4.7nF 10% 63V

2522

4822 122 33891 3.3nF 10% 63V

2522

5322 126 10223 4.7nF 10% 63V

2524

5322 122 32268 470pF 10% 50V

2529

4822 126 13838 100nF 20% 50V

2530

4822 124 22776 1

F 50V

2531

4822 126 14587 560pF 2% 50V

2533

5322 122 31863 330pF 5% 63V

2534

5322 126 10511 1nF 5% 50V

2537

5322 121 42386 100nF 5% 63V

2540

4822 124 81188 100

F 20% 25V

2541

4822 121 10686 4.7nF 10% 50V

2545

4822 126 14049 1.5nF 20% 250V

2550

4822 126 14152 680pF 10% 1KV

2551

4822 124 42336 47

F 20% 160V

2560

5322 122 31647 1nF 10% 63V

2561

4822 124 81145 1000

F 20% 16V

2570

4822 122 33127 2.2nF 10% 63V

2571

4822 124 12417 2200

F 20% 25V

2572

4822 122 33177 10nF 20% 50V

2600

4822 124 81151 22

F 50V

2601

4822 124 81151 22

F 50V

2604

4822 126 13838 100nF 20% 50V

2605

4822 126 13838 100nF 20% 50V

2606

4822 126 13838 100nF 20% 50V

2607

5322 126 10511 1nF 5% 50V

2608

4822 121 43897 1nF 5% 400V

2609

4822 126 13838 100nF 20% 50V

2610

4822 121 42687 3.3nF 10% 63V

2611

4822 126 13838 100nF 20% 50V

2612

5322 122 32654 22nF 10% 63V

2613

4822 126 13695 82pF 1% 63V

2614

4822 126 13695 82pF 1% 63V

2615

5322 122 32531 100pF 5% 50V

2616

5322 122 32658 22pF 5% 50V

2617

5322 122 32658 22pF 5% 50V

2618

4822 122 33177 10nF 20% 50V

2619

4822 126 14076 220nF 20% 25V

2620

5322 122 32531 100pF 5% 50V

2621

5322 122 32531 100pF 5% 50V

2622

5322 122 32531 100pF 5% 50V

2623

5322 122 32531 100pF 5% 50V

2624

4822 126 13838 100nF 20% 50V

2625

5322 122 32531 100pF 5% 50V

2651

4822 124 40207 100

F 20% 25V

2675

4822 126 13482 470nF 20% 16V

2680

4822 124 40248 10

F 20% 63V

2697

5322 126 10511 1nF 5% 50V

2950

4822 124 81151 22

F 50V

2951

4822 124 40248 10

F 20% 63V

2952

4822 122 33127 2.2nF 10% 63V

2953

4822 126 14076 220nF 20% 25V

2954

4822 126 14076 220nF 20% 25V

2955

4822 124 11767 470

F 20% 25V

2971

4822 121 51252 470nF 5% 63V

2972

4822 126 12105 33nF 5% 50V

2973

5322 121 42386 100nF 5% 63V

2974

4822 121 51379 82nF 5% 63V

2975

4822 122 33177 10nF 20% 50V

3000

4822 051 20101 100

Ω

5% 0.1W

3001

4822 051 20101 100

Ω

5% 0.1W

3002

4822 116 52244 15k 5% 0.5W

3003

4822 116 52238 12k 5% 0.5W

3004

4822 116 52243 1k5 5% 0.5W

3013

4822 051 20008 jumper (0805)

3014

4822 051 20392 3k9 5% 0.1W

3015

4822 116 83933 15k 1% 0.1W

3016

4822 117 10361 680

Ω

1% 0.1W

3021

4822 117 10361 680

Ω

1% 0.1W

3026

4822 051 20562 5k6 5% 0.1W

3027

4822 051 20223 22k 5% 0.1W

3110

4822 117 11927 75

Ω

1% 0.1W

3112

4822 051 20101 100

Ω

5% 0.1W

3113

4822 051 10102 1k 2% 0.25W

3114

4822 050 11002 1k 1% 0.4W

3115

4822 117 10834 47k 1% 0.1W

3117

4822 051 20008 jumper (0805)

3120

4822 117 11927 75

Ω

1% 0.1W

3121

4822 117 10353 150

Ω

1% 0.1W

3122

4822 117 13579 220k 1% 0.1W

3124

4822 117 10353 150

Ω

1% 0.1W

3125

4822 117 13579 220k 1% 0.1W

3127

4822 051 20008 jumper (0805)

3128

4822 117 10834 47k 1% 0.1W

3140

4822 116 83874 220k 5% 0.5W

3141

4822 050 11002 1k 1% 0.4W

3145

4822 116 52228 680

Ω

5% 0.5W

3146

4822 051 20334 330k 5% 0.1W

3147

4822 051 20391 390

Ω

5% 0.1W

Summary of Contents for L9.2A

Page 1: ...1 Supply voltage diagram 25 Blockdiagram 26 Testpointsoverview and oscillograms 27 7 Electrical diagram s en PWB s Diagram PWB Power supply Diagram A1 28 34 37 Diversity table A1 29 Horizontal deflection Diagram A2 30 34 37 Vertical deflection Diagram A3 31 34 37 Synchronisation Diagram A4 31 34 37 Tuner en video IF TDA 8844 Diagram A5 32 34 37 Diversity table A5 33 Video processing Diagram A6 38 ...

Page 2: ...6C AI PAL 1 2 Specification of the terminal sockets 1 3 Specification of the terminal sockets 1 3 1 Inputs AV1 AV2 and Side AV Cinch CVBS yellow 1Vpp 3dB 75Ω q Cinch Audio R red 0 2 2VRMS 10kΩ q Cinch Audio L white 0 2 2VRMS 10kΩ q 1 3 2 Outputs MONITOR out Cinch CVBS yellow 1Vpp 3dB 75Ω q Cinch Audio R red 0 5VRMS 1kΩ q Cinch Audio L white 0 5VRMS 1kΩ q 1 3 3 Headphone Jack 8 600 4mW t 1 3 4 SVHS...

Page 3: ...o avoid touching the CRT hot components or heat sinks The electrical DC resistance between the mains plug and the secondary side should be checked only for sets which have a mains isolated power supply This check can be done as follows Unplug the mains cord and connect a wire between the two pins of the mains plug Set the mains switch to the on position keep the mains cord unplugged Measure the re...

Page 4: ...nt of this unit during repair is therefore not recommended 6 Be careful during measurements in the high voltage section and on the picture tube 7 Never replace modules or other components while the unit is switched on 8 When making settings use plastic rather than metal tools This will prevent any short circuits and the danger of a circuit becoming unstable 9 Wear safety goggles during replacement...

Page 5: ...Directions for use GB 5 L9 2A 3 3 Directions for use ...

Page 6: ...Directions for use GB 6 L9 2A 3 ...

Page 7: ...Directions for use GB 7 L9 2A 3 ...

Page 8: ...Directions for use GB 8 L9 2A 3 ...

Page 9: ...Directions for use GB 9 L9 2A 3 ...

Page 10: ...Directions for use GB 10 L9 2A 3 ...

Page 11: ...Directions for use GB 11 L9 2A 3 ...

Page 12: ...Directions for use GB 12 L9 2A 3 ...

Page 13: ...Directions for use GB 13 L9 2A 3 ...

Page 14: ... Test points for the frame deflection circuit A3 I1 I2 I3 etc Test points for the Tuner Video IF circuit A5 L1 L2 L3 etc Test points for the Line deflection circuit A2 P1 P2 P3 etc Test points for the power supply A1 S1 S2 S3 etc Test points for the synchronisation circuit A4 V1 V2 V3 etc Test points for the video processing circuit CRT panel A6 CRT panel B Measurements are performed under the fol...

Page 15: ...NU key again will return to the last SDM status Error buffer Pressing the OSD button on the remote control shows all OSD incl error buffer Access to SAM By pressing the CHANNEL DOWN and VOLUME DOWN buttons on the local keyboard simultaneously or pressing ALIGN on theDST DST the set switches from SDM to SAM In the SDM the following information is displayed on the screen Figure 5 3 Service Default M...

Page 16: ...ter the normal user menu TV lock installation brightness colour and contrast while SAM remains displayed in top of screen Pressing the MENU key again will return to the last SAM status Pressing the OSD button of the remote control shows only SAM in the top of screen Access to SDM Pressing the DEFAULT button on the DST SAM menu control Menu items AKB VSD Tuner White tone Geometry and Audio can be s...

Page 17: ... from left to right when an error occurs that is not yet in the error code buffer the error is written at the left side and all other errors shift one position to the right the error code buffer will be cleared in the following cases 1 exiting SDM or SAM with the Standby command on the remote control 2 transmitting the commands EXIT with the DST RC7150 3 transmitting the commands DIAGNOSE 9 9 OK w...

Page 18: ...e BIMOS 7250 D pin 40 A4 Synchronisation Timer IC 7607 or transitor 7608 is defect A7 Control 2 Note If the Collector of 7402 is shorted to the Emitter hick up noise can be heard from the power supplyIn this case the E W protection is disabled is correctly working a parabolic picture 3 Also take note of protection circuits in the line output stage If any of these circuits are activated the set wil...

Page 19: ...ys 1 Communication to the television automatic 2 Asking questions to you manually ComPair combines this information with the repair information in its database to find out how to repair the L9 2A Automatic information gathering Reading out the error buffer ComPair can automatically read out the contents of the entire error buffer Diagnosis on I2C level ComPair can access the I2C bus of the televis...

Page 20: ...red LED on the Compair interface wil light up 12 Switch on the television set with the mains switch 13 When the set is in standby Click on Start up in ComPair mode from standby in the ComPair L9 2A fault finding tree otherwise continue Figure 5 7 Figure 5 8 The set has now started up in ComPair mode Follow the instruction in the L9 2A fault finding tree to diagnose the set Note that the OSD works ...

Page 21: ...ddle of the screen till this line is just not visible The alignment of the VG2 has been completed Switch the set to Standby The values adapted at the BRIGHTNESS and the CONTRAST menu during the alignment will change back again to their default values 8 2 2 Focusing Set pattern generator e g PM5418 with Circle and Small Squares pattern and connect to aerial input with RF signal amplitude 10mv Adjus...

Page 22: ...pically this is for Secam LL The default values for these option codes are CL 4 YD 12 IF PLL OFFSET 48 8 3 5 White tone Connect a pattern generator e g PM5418 and set it to colour bar and circle pattern Set frequency for PAL 475 25MHz or 61 25MHz for BTSC with RF signal amplitude 10mv and connect to tuner aerial input Enter the SAM MENU Enter into WHITE TONE menu select item NORMAL DELTAWARM or DE...

Page 23: ...g for games possible when enabled HS Hospital Mode Possibility to block the local keyboard when enabled HT Hotel Mode Possibility to pre select the channel numbers when enabled IS Incredible Surround Incredible surround function available when enabled LV Automatic Volume Leveller AVL Menu item AVL available when enabled NI No Ident Auto Standby Set switches to standby after 10min when NI enabled N...

Page 24: ... dead During T on FET 7518 conducts Energy is stored in the primary winding 2 5 of transformer T5545 by using a linear increasing primary current The slope depends on the rectified mains voltage present across C2508 The T on period is varied to provide regulation of the drive waveform at pin 3 of IC7520 By controlling the duty cycle of the SMPS in this way the VBATT is controlled During T off FET ...

Page 25: ...eing short circuited or loaded excessively the I prim becomes too high which is detected by pin 7 As a result the primary current is limited to its maximum value and the secondary voltages will drop The voltage at pin 1 which is coupled with the output voltage will also drop When the voltage at pin 1 drops below the 9V IC7520 will stop functioning and the output voltage will rapidly drop to zero V...

Page 26: ...urther demodulation All variants of 2CS are demodulated in this IC Figure 9 11 2CS Audio signals coming from the frontpanel are connected to pin 49 50 of IC7803 for the Ext1Audio signals while pin 52 53 of IC 7861 are used for the Ext2Audio signals IC 7803 performs source selection as well as audio processing such as volume balance tone control mute spatial stereo incredible surround sound and SMA...

Page 27: ...ss see software alignment adjustments 9 5 6 PLL demodulator The IF signal is demodulated with the assistance of the PLL detector The video IF demodulator can handle both negative and positively modulated IF signals selection is achieved via the IIC bus bit MOD 9 5 7 Video buffer The video buffer is present to provide a low ohmic video output with the required signal amplitude Additionally it provi...

Page 28: ...r outputs R Y and B Y are present at pin 28 29 30 of the TV processor The auto system manager identifies PAL NTSC and SECAM colour standards and is controllable via the IIC bus Connected on pin 36 of the TV processor is the Loop Filter for the phase detector The filter chosen provides an optimal transient response which ensures both an optimum for noise bandwidth and colour acquisition time 9 6 5 ...

Page 29: ...l the signal EHT_info is used This signal is a measurement of the picture contents It is filtered by 3253 2227 As the time constant of the filter is much bigger than the frame period time the DC at the anode of 6212 represents the average value of the picture content Via 6212 and 2226 the DC voltage at pin 22 is slowly clamped For peak white limiting transistor 7263 is utilised When peak white occ...

Page 30: ... controller KeyBd1 Local keyboard control signal to micro controller KeyBd2 Local keyboard control signal to micro controller In protection mode KeyBd2 is Ground KeyBd3 Local keyboard control signal to micro controller L Power amplifier output to headphone and speaker L Power amplifier output to speaker LED LED control signal from micro controller to LED LATAM Latin America schematic PCB informati...

Page 31: ... Power Supply STANDBY Switching signal from micro controller low for standby power supply will be switched to stand by mode high for normal operation SW_OUT Selected Output signal from source SYNC Synchronisation TBD To Be Defined TREBLE Control signal for treble TXT Teletext µC Micro controller USA United States schematic PCB information only applicable for North American sets V_TUNE Tuning volta...

Page 32: ... 2407h 4822 121 70637 8 2nF 5 1600V 2408 4822 122 30103 22nF 20 63V 2409 4822 124 11575 47µF 20 160V 2410 4822 124 11767 470µF 20 25V 2411 4822 124 40255 100µF 20 63V 2412 4822 121 51385 33nF 20 100V 2413 4822 124 11845 22µF 20 250V 2414 4822 124 81145 1000µF 20 16V 2415 4822 124 81145 1000µF 20 16V 2416h 4822 126 11503 820pF 10 2KV 2416h 4822 126 12263 220pF 10 2KV 2416h 4822 126 13864 330pF 10 2...

Page 33: ... 1W 3517 4822 050 21003 10k 1 0 6W 3518 2120 106 90549 0Ω27 5 3520 4822 117 11149 82k 1 0 1W 3521 4822 116 52219 330Ω 5 0 5W 3524 4822 051 20008 jumper 0805 3525h 4822 052 10229 22Ω 5 0 33W 3528 4822 116 83868 150Ω 5 0 5W 3529 4822 050 24708 4Ω7 1 0 6W 3530 4822 116 52276 3k9 5 0 5W 3532 4822 117 11507 6k8 1 0 1W 3534 4822 117 13579 220k 1 0 1W 3536 4822 051 20273 27k 5 0 1W 3537 4822 117 10833 10...

Page 34: ...0Ω 5 0 1W 3324 4822 053 12183 18k 5 3W 3326h 4822 052 10221 220Ω 5 0 33W 3327 4822 052 11152 1k5 5 0 5W 3331 4822 051 10102 1k 2 0 25W 3332 4822 117 13577 330Ω 1 1 25W 3333 4822 051 20109 10Ω 5 0 1W 3334 4822 053 12183 18k 5 3W 3336h 4822 052 10221 220Ω 5 0 33W 3337 4822 052 11152 1k5 5 0 5W 3341 4822 052 11152 1k5 5 0 5W 3347h 4822 052 10102 1k 5 0 33W 3348 4822 052 11152 1k5 5 0 5W 3349h 4822 05...

Page 35: ...31673 HEADPHONE PLUG 0253 4822 267 31673 HEADPHONE PLUG g 2171 4822 126 13512 330pF 10 50V 2172 4822 126 13512 330pF 10 50V f 3150 4822 116 83884 47k 5 0 5W 3151 4822 050 11002 1k 1 0 4W 3152 4822 116 83884 47k 5 0 5W 3153 4822 050 11002 1k 1 0 4W ...

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