PHILIPS MD 1.2E-AA Service Manual

1PHILIPS MD 1.2E/AA

Recommended Safety Parts

Item Part No. Description

4822 265 30389 2P conn. L01,L02 4822 256 92053 Fuse holder

4822 492 62076 Spring transistor 1463 4822 252 11194 19398E1 (0,800A) 1501 4822 070 33152 2183.15 (3.15A) 1566 4822 252 51175 19398E1 (2,500) 1572 4822 071 52502 19372 (2.5A) 1580 4822 252 51186 19398E1 (2,0A) 2425 4822 121 70434 11nF 5% 1.6KV 2425 5322 121 44345 15nF 5% 1.6KV 2426 4822 121 42934 27nF 10% 400V 2427 4822 121 10563 0.82uF 5% 250V 2433 4822 126 12274 1500pF 10% 2KV 2450 4822 121 40518 100nF 10% 250V 2487 4822 124 40433 47uF 20% 25V 2500 4822 121 70285 470nF 10% 250V 2505 4822 124 11772 150uF 20% 385V 2505 4822 124 23492 220uF 50% 385V 2506 4822 121 40487 100nF 10% 400V 2511 4822 126 11141 2.2nF 10% 1KV 2512 4822 126 11141 2.2nF 10% 1KV 2540 4822 126 12426 330pF 10% 1KV 2543 4822 126 13451 2.2nF 10% 2KV 2544 4822 126 13451 2.2nF 10% 2KV 2550 4822 126 10727 3.3nF 20% 400V 2559 4822 124 40433 47uF 20% 25V 2568 4822 126 12426 330pF 10% 1KV 2609 4822 124 40433 47uF 20% 25V 2751 4822 124 41579 10uF 20% 50V 2752 4822 124 41579 10uF 20% 50V 2763 4822 124 41579 10uF 20% 50V 3401 4822 052 11229 22 ohm 5% 0.5W 3402 4822 052 11229 22 ohm 5% 0.5W 3430 4822 052 11471 470 ohm 5% 0.5W 3443 4822 052 10688 6 ohm8 5% 0.33W 3461 4822 052 10228 2 ohm2 5% 0.33W 3461 4822 052 11158 1 ohm5 5% 0.5W 3462 4822 052 10228 2 ohm2 5% 0.33W 3464 4822 052 11568 5 ohm6 5% 0.5W 3472 4822 052 10228 2 ohm2 5% 0.33W 3483 4822 050 24708 4 ohm7 1% 0.6W 3484 4822 050 24708 4 ohm7 1% 0.6W 3500 4822 116 21224 1MA/387V VDR 3502 4822 052 10338 3ohm3 5% 0.33W 3506 4822 117 12027 18ohm-3k ohm 25% PTC 3524 4822 052 10109 10ohm 5% 0.33W 3540 4822 116 83027 0.22 ohm 5% 3W 3541 4822 052 10102 1K 5% 0.33W 3545 4822 052 10159 15 ohm 5%m 0.33W 3588 4822 052 11338 3 ohm 3 5% 0.5W 3752 4822 052 10828 8 ohm 2 5% 0.33W 3753 4822 052 10828 8 ohm 2 5% 0.33W 5410 4822 142 40351 Line drive transf. 5421 4822 157 63079 LC coil (21”) 5421 4822 157 10992 LC coil (other) 5424 4822 157 53069 Balance coil 5430 4822 140 10595 LOT ELDOR (21”) 5430 4822 140 10584 LOT CML16P 5480 4822 158 10728 Bridge coil. 11uH 5503 4822 142 40315 Mains filter 5550 4822 146 10366 Transf. CE425V 5550 4822 146 31469 transf. 10290250 6423 4822 130 41275 BY228/20 6424 4822 130 41602 BYW95C/20 6457 4822 130 30621 1N4148 6480 4822 130 30621 1N4148 6481 4822 130 30621 1N4148 6510 4822 130 31933 1N5061 6511 4822 130 31933 1N5061 6512 4822 130 31933 1N5061 6513 4822 130 31933 1N5061 6524 4822 130 31631 BYV10-20 6530 4822 130 30621 1N4148 6571 4822 130 31982 BYV27-100 6591 4822 130 30621 1N4148 6600 4822 130 30621 1N4148 6601 4822 130 30621 1N4148 6763 4822 130 30621 1N4148 7420 4822 130 63271 BU2508AF 7421 4822 130 10779 BU1506DX 7450 4822 130 44197 BC558B 7520 4822 209 90025 MC44603P 7556 4822 130 10025 CNX82A 7561 4822 130 44197 BC558B 7580 4822 209 80817 MC7800 7591 4822 130 44197 BC558B 7602 4822 130 41344 BC337-40 7605 4822 130 44197 BC558B 1100 4822 071 51001 Fuse 19372(100mA) 2008 4822 124 40196 220uF 20% 16V (BG LI) 2009 4822 124 41579 10uF 20% 50V 2033 5322 126 10223 4.7nF 10% 63V 2034 5322 126 10223 4.7nF 10% 63V 2036 5322 126 10223 4.7nF 10% 63V 2037 4822 124 41579 10uF 20% 50V 2101 5322 126 10223 4.7nF 10% 63V 2104 5322 126 10223 4.7nF 10% 63V

Recommended Safety Parts

Item Part No. Description

2105 5322 126 10223 4.7nF 10% 63V 2108 5322 126 10223 4.7nF 10% 63V 2125 4822 122 33177 10nF 20% 50V 2127 4822 124 41579 10uF 20% 50V 2136 5322 122 34123 1nF 10% 50V 2137 4822 126 10002 100nF 20% 25V 2138 4822 122 33177 10nF 20% 50V 2139 4822 122 33177 10nF 20% 50V 2140 5322 122 34123 1nF 10% 50V 2144 5322 122 34123 1nF 10% 50V 2145 5322 122 34123 1nF 10% 50V 2158 4822 124 40433 47uF 20% 25V 2162 5322 126 10223 4.7nF 10% 63V (P/Sec.) 2169 4822 122 33177 10nF 20% 50V 2170 5322 126 10223 4.7nF 10% 63V 2171 4822 122 33177 10nF 20% 50V 2175 5322 122 34123 1nF 10% 50V 2176 5322 122 34123 1nF 10% 50V 2179 4822 124 40433 47uF 20% 25V 2600 4822 124 41579 10uF 20% 50V 2606 4822 122 33177 10nF 20% 50V 2607 4822 122 33177 10nF 20% 50V 2655 5322 122 34123 1nF 10% 50V 2665 4822 126 10002 100nF 20% 25V 2685 4822 122 33177 10nF 20% 50V 2700 4822 122 33177 10nF 20% 50V 2703 5322 122 32654 22nF 10% 63V 2708 4822 126 10002 100nF 20% 25V 2709 4822 122 33177 10nF 20% 50V 2711 4822 126 10002 100nF 20% 25V 2712 5322 122 32654 22nF 10% 63V 2715 4822 124 41579 10uF 20% 50V 2716 4822 124 41579 10uF 20% 50V 2830 4822 124 41579 10uF 20% 50V 2837 4822 126 10002 1nF 20% 25V 3031 4822 051 20472 4k7 5% 0.1W 3032 4822 051 20472 4k7 S% 0.1W 3033 4822 051 20472 4k7 5% 0.1W 3040 4822 052 10479 47ohm 5% 0.33W 3126 4822 051 20153 15k 5% 0.1W 3156 4822 051 20109 10ohm 5% 0.1W 3162 4822 052 10478 4ohm7 5% 0.33W 3169 4822 052 10478 4ohm7 5% 0.33W 3186 4822 052 10478 4ohm7 5% 0.33W 3190 4822 051 20332 3k3 5% 0.1W 3193 4822 051 20008 0 ohm (jumper) 3613 4822 051 20472 4k7 5% 0.1W 3614 4822 051 20472 4k7 5% 0.1W 3616 4822 051 20472 4k7 5% 0.1W 3617 4822 051 20472 4k7 5% 0.1W 3623 4822 051 20472 4k7 5% 0.1W 3624 4822 051 20472 4k7 5% 0.1W 3670 4822 051 20472 4k7 5% 0.1W 3680 4822 051 20472 4k7 5% 0.1W 3691 4822 051 20472 4k7 5% 0.1W 3692 4822 051 20472 4k7 5% 0.1W 3704 4822 051 20008 0 ohm (jumper) 3805 4822 052 10109 10 ohm 5% 0.33W 3817 4822 051 20472 4k7 5% 0.1W 3826 4822 051 20121 120 ohm 5% 0.1W 3847 4822 052 10109 10 ohm 5% 0.33W 3860 4822 051 20472 4k7 5% 0.1W 5106 4822 157 51462 10uH 6030 4822 130 30621 1N4148 6031 4822 130 30621 1N4148 6032 4822 130 30621 1N4148 6105 4822 130 30621 1N4148 6106 4822 130 30621 1N4148 6107 4822 130 30621 1N4148 6108 4822 130 30621 1N4148 6109 4822 130 30621 1N4148 6660 4822 130 30621 1N4148 6661 4822 130 30621 1N4148 6700 4822 130 30621 1N4148 6830 4822 130 31983 BAT85 7009 5322 130 41982 BC848B 7010 5322 130 41982 BC848B 7030 5322 130 41982 BC848B 7031 5322 130 41982 BC848B 7032 5322 130 41982 BC848B 7100 5322 130 41982 BC848B 7102 5322 130 41982 BC848B 7120 5322 130 41982 BC848B 7150 5322 130 41982 BC848B 7601 5322 130 41982 BC848B 7604 5322 130 41982 BC848B 7605 5322 130 41982 BC848B 7608 5322 130 41982 BC848B 7700 5322 130 41982 BC848B 7826 5322 130 41982 BC848B 7850 5322 130 41982 BC848B 7867 5322 130 41982 BC848B

4822 255 70261 Socket Pict. tube 2320 4822 122 33172 390pF 5% 50V 2383 4822 124 40433 47uF 20% 25V 3309 4822 052 10102 1K 5% 0.33W 3329 4822 052 10102 1K 5% 0.33W

Recommended Safety Parts

Item Part No. Description

3349 4822 052 10102 1K 5% 0.33W 3355 4822 051 20109 10 ohm 5% 0.1W 3356 4822 051 20008 0 ohm (jumper) 3386 4822 052 10128 1 ohm2 5% 0.33W 3387 4822 052 10109 10 ohm 5% 0.33W 3388 4822 052 10689 68 ohm 5% 0.33W 3391 4822 051 20008 0 ohm (jumper) 6344 4822 130 30621 1N4148 7301 5322 130 41982 BC848B 7321 5322 130 41982 BC848B 7340 5322 130 41982 BC848B 7365 5322 130 41982 BC848B 2352 4822 124 41579 10uF 20% 50V 2353 4822 124 41579 10uF 20% 50V 2354 4822 124 41579 10uF 20% 50V 2355 4822 124 41579 10uF 20% 50V 2356 4822 124 41579 10uF 20% 50V 2357 4822 124 41579 10uF 20% 50V 2358 4822 124 41579 10uF 20% 50V 2359 4822 124 41579 10uF 20% 50V 2360 4822 124 41579 10uF 20% 50V 2361 4822 124 41579 10uF 20% 50V 2362 4822 124 41579 10uF 20% 50V 2363 4822 124 41579 10uF 20% 50V 2365 4822 124 41579 10uF 20% 50V 2367 4822 124 41579 10uF 20% 50V 2368 4822 124 41579 10uF 20% 50V 2373 5322 126 10223 4.7nF 10% 63V 2378 5322 126 10223 4.7nF 10% 63V 2382 5322 122 34123 1nF 10% 50V 2383 5322 122 34123 1nF 10% 50V 2386 5322 122 34123 1nF 10% 50V 2387 5322 122 34123 1nF 10% 50V 2388 5322 122 34123 1nF 10% 50V 2389 5322 122 34123 1nF 10% 50V 2390 5322 122 34123 1nF 10% 50V 2394 4822 126 10002 100nF 20% 25V 2395 5322 122 34123 1nF 10% 50V 2396 4822 122 33172 390pF 5% 50V 2397 4822 122 33172 390pF 5% 50V 2398 4822 126 10002 100nF 20% 25V 2401 4822 126 10002 100nF 20% 25V 2408 4822 126 10002 100nF 20% 25V 2452 5322 126 10223 4.7nF 10% 63V 2453 5322 126 10223 4.7nF 10% 63V 2454 5322 126 10223 4.7nF 10% 63V 2455 5322 126 10223 4.7nF 10% 63V 3364 4822 051 20472 4k7 5% 0.1W 3376 4822 051 20472 4k7 5% 0.1W 3382 4822 051 20332 3k3 5% 0.1W 3383 4822 051 20332 3k3 5% 0.1W 3387 4822 051 20332 3k3 5% 0.1W 3389 4822 051 20332 3k3 5% 0.1W 3395 4822 051 20008 0 ohm (jumper) 5351 4822 157 51462 10uH 6384 4822 130 30621 1N4148 7350 4822 209 83163 LM833N 7351 4822 209 83163 LM833N 7382 5322 130 41982 BC848B 7383 5322 130 41982 BC848B 7387 5322 130 41982 BC848B 7389 5322 130 41982 BC848B 7415 5322 130 41982 BC848B 7420 5322 130 41982 BC848B 7427 5322 130 41982 BC848B 7430 5322 130 41982 BC848B 7432 5322 130 41982 BC848B 2000 5322 126 10223 4.7nF 5% 63V 7002 5322 130 41982 BC848B 2279 4822 124 40433 47uE 20% 25V 2285 5322 122 32654 22nF 10% 63V 3278 4822 051 20332 3k3 5% 0.1W 3288 4822 052 10399 39ohm 5% 0.33W 3292 4822 052 10689 68ohm 5% 0.33W 7276 5322 130 41982 BC848B 7282 5322 130 41982 BC848B 5013 4822 142 40344 Driver transformer 6011 4822 130 31631 BYV10-20 0022 4822 276 13592 Mains switch

4822 265 30389 2P conn. vert. K12

4822 267 51348 2P conn. K09 3520 4822 053 21475 4M7 5% 0.5W 3521 4822 053 21475 4M7 5% 0.5W 2810 4822 122 33342 33nF 10% 63V 2832 4822 122 33177 10nF 20% 50V 2834 4822 122 33177 10nF 20% 50V 3813 4822 051 20008 0 ohm (jumper) 3814 4822 051 20472 4k7 5% 0.1W 7840 5322 130 41982 BC848B

4822 276 13603 Mains switch

4822 265 30389 2P conn. vert. K101

4822 267 51348 2P conn. K104

4822 256 91766 LED holder 3520 4822 053 21475 4M7 5% 0.5W 3521 4822 053 21475 4M7 5% 0.5W 7811 4822 130 44197 BC558B 7812 4822 130 40937 BC548B

Recommended Safety Parts

Item Part No. Description

(For 16;9 & Surround Sound)

4822 265 30389 Con. 2P (L01, I02) 4822 256 92053 Fuse holder

4822 492 62076 Spring fix. transistor 1463 4822 252 11194 Prot dev 65V 800mA 1566 4822 252 51175 Prot dev 65V 2.5A 1572 4822 071 52502 Fuse T2.5A lEC 250V 1580 4822 252 51175 Prof dev 65V 2.5A 2420 4822 126 13435 1.2nF 10% 2KV 2425 4822 121 70434 11nF 5% 1.6KV 2425 5322 121 44345 15nF 5% 1.6KV 2426 4822 121 10653 22nF 5% 630V 2427 4822 121 10563 820nF 5% 250V 2433 4822 126 12274 1.5nF 10% 2KV 2433 4822 126 13449 1nF 10% 2KV 2450 4822 121 10619 220nF 10% 250V 2450 4822 121 40518 100nF 10% 250V 2487 4822 124 40433 47uF 20% 25V 2500 4822 126 13589 470nF 275V 2505 4822 124 11772 150uF 20% 385V 2505 4822 124 23492 220uF 50% 385V 2506 4822 121 40487 100nF 10% 400V 2511 4822 126 11141 2.2nF 10% 1KV 2512 4822 126 11141 2.2nF 10% 1KV 2540 4822 126 12426 330pF 10% 1KV 2543 4822 126 13451 2.2nF 10% 1KV 2544 4822 126 13451 2.2nF 10% 1KV 2550 4822 126 14105 3.3nF 20% 250V 2559 4822 124 40433 47uF 20% 25V 2568 4822 126 12426 330pF 10% 1KV 2609 4822 124 40433 47uF 20% 25V 2751 4822 124 41579 10uF 20% 10U 2752 4822 124 41579 10uF 20% 50V 2763 4822 124 41579 10uF 20% 10U 3401 4822 052 11229 22 ohm 5% 0.5W 3402 4822 052 11229 22 ohm 5% 0.5W 3430 4822 052 11471 470 ohm 5% 0.5W 3443 4822 052 10688 6 ohm 8 5% 0.33W 3461 4822 052 10228 2 ohm 2 5% 0.33W 3461 4822 052 11158 1 ohm 5 5% 0.33W 3462 4822 052 10228 2 ohm 2 5% 0.33W 3464 4822 052 11568 5 ohm 6 5% 0.33W 3472 4822 052 10228 2 ohm 2 5% 0.33W 3483 4822 050 24708 4 ohm 7 1% 0.6W 3484 4822 050 24708 4 ohm 7 1% 0.6W 3502 4822 052 10338 3 ohm 3 5% 0.33W 3506 4822 117 12027 PTC/PTC 18 ohm 276V 3507 4822 117 12027 PTC/PTC 18 ohm 276V 3524 4822 052 10109 10 ohm 5% 0.33W 3545 4822 052 10159 15 ohm 5% 0.33W 3588 4822 052 11338 3 ohm 3 5% 0.5W 3601 4822 050 24708 4 ohm 7 1% 0.6W 3602 4822 050 24708 4 ohm 15 0.6W 3603 4822 050 24708 4 ohm 7 1% 0.6W 3752 4822 052 10828 8 ohm 2 5% 0.33W 3753 4822 052 10828 8 ohm 2 5% 0.33W 5410 4822 142 40351 Line drive trafo 5421 4822 157 10992 Linearity coil LC90 5421 4822 157 63079 Linearity cor. AT4042/97 5424 4822 157 53069 Balance coil 5430 4822 140 10584 Line output trafo CML16P 5430 4822 140 10595 Line output trafo ELDOR

5480 4822 158 10728 Bridge coil 5503 4822 157 11236 Line filter 40mH 5550 4822 146 10366 Power trafo CE42SV 5550 4822 146 31469 Power trafo 10290250 6423 4822 130 41275 BY228/20 6424 4822 130 41602 BYW95C/20 6457 4822 130 30621 1N4148 6480 4822 130 30621 1N4148 6481 4822 130 30621 1N4148 6510 4822 130 31933 1N5061 6511 4822 130 31933 1N5061 6512 4822 130 31933 1N5061 6513 4822 130 31933 1N5061 6524 4822 130 31631 BYV10 6530 4822 130 30621 1N4148 6571 4822 130 31982 8YV27-100 6591 4822 130 30621 1N4148 6600 4822 130 30621 1N4148 6601 4822 130 30621 1N4148 6610 4822 130 30621 1N4148 6763 4822 130 30621 1N4148 7420 4822 130 63271 BU2508AF 7421 4822 130 10779 BU1506DX 7450 4822 130 44197 BC558B 7520 4822 209 90025 MC44603P 7556 4822 130 10025 CNX82A 7561 4822 130 44197 BC558B 7580 4822 209 80817 MC7805CT 7591 4822 130 44197 BC558B 7602 4822 130 41344 BC337-40 7605 4822 130 44197 BC558B 1100 4822 071 51001 Fuse T100mA 2008 4822 124 40196 220uF 20% 16V 2009 4822 124 41579 10uF 20% 50V

21" 90NN

Recommended Safety Parts

Item Part No. Description

2033 5322 126 10223 4.7nF 10% 63V 2034 5322 126 10223 4.7nF 10% 63V 2036 5322 126 10223 4.7nF 10% 63V 2037 4822 124 41579 10uF 20% 50V 2101 5322 126 10223 4.7nF 10% 63V 2104 5322 126 10223 4.7nF 10% 63V 2105 5322 126 10223 4.7nF 10% 63V 2108 5322 126 10223 4.7nF 10% 63V 2125 4822 122 33177 10nF 20% 50V 2127 4822 124 41579 10uF 20% 50V 2136 5322 122 34123 1nF 10% 50V 2137 4822 126 10002 100nF 20% 50V 2138 4822 122 33177 10nF 20% 50V 2139 4822 122 33177 10nF 20% 50V 2140 4822 122 33177 10nF 20% 50V 2144 5322 122 34123 1nF 10% 50V 2145 5322 122 34123 1nF 10% 50V 2158 4822 124 40433 47uF 20% 25V 2162 5322 126 10223 4.7nF 10% 63V 2169 4822 122 33177 10nF 20% 50V 2170 5322 126 10223 4.7nF 10% 63 2171 4822 122 33177 10nF 20% 50V 2175 4822 122 33177 10nF 20% 50V 2176 4822 122 33177 10nF 20% 50V 2179 4822 124 40433 47uF 20% 25V 2600 4822 124 41579 10uF 20% 50V 2606 4822 122 33177 10nF 20% 50V 2607 4822 122 33177 10nF 20% 50V 2655 5322 122 34123 1nF 10% 50V 2665 4822 126 10002 100nF 20% 50V 2685 4822 122 33177 10nF 20% 50V 2700 4822 122 33177 10nF 20% 50V 2703 5322 122 32654 22nF 10% 63V 2708 4822 126 10002 100nF 20% 50V 2709 4822 122 33177 10nF 20% 50V 2711 4822 126 10002 100nF 20% 50V 2712 5322 122 32654 22nF 10% 63V 2715 4822 124 41579 10uF 20% 50V 2716 4822 124 41579 10uF 20% 50V 2830 4822 124 41579 10uF 20% 50V 2837 4822 126 10002 100nF 20% 50V 3031 4822 051 20472 4k7 5% 0.1W 3032 4822 051 20472 4k7 5% 0.1W 3033 4822 051 20472 4k7 5% 0.1W 3040 4822 052 10479 47 ohm 5% 0.33W 3126 4822 051 20153 15k 5% 0.1W 3156 4822 051 20109 10 ohm 5% 0.1W 3162 4822 052 10478 4 ohm 7 5% 0.33W 3169 4822 052 10478 4 ohm 7 5% 0.33W 3186 4822 052 10478 4 ohm 7 5% 0.33W 3190 4822 051 20332 3k3 5% 0.1W 3193 4822 051 20008 0 ohm Jumper 3613 4822 051 20472 4k7 5% 0.1W 3614 4822 051 20472 4k7 5% 0.1W 3616 4822 051 20472 4k7 5% 0.1W 3617 4822 051 20472 4k7 5% 0.1W 3623 4822 051 20472 4k7 5% 0.1W 3624 4822 051 20472 4k7 5% 0.1W 3670 4822 051 20472 4k7 5% 0.1W 3680 4822 051 20472 4k7 5% 0.1W 3691 4822 051 20472 4k7 5% 0.1W 3692 4822 051 20472 4k7 5% 0.1W 3704 4822 051 20008 0 ohm Jumper 3720 4822 051 20472 4k7 5% 0.1W 3805 4822 052 10109 10 ohm 5% 0.33W 3817 4822 051 20472 4k7 5% 0.1W 3826 4822 051 20121 120 ohm 5% 0.1W 3847 4822 052 10109 10 ohm 5% 0.33W 3860 4822 051 20472 4k7 5% 0.1W 5106 4822 157 51462 10uH 6030 4822 130 30621 1N4148 6031 4822 130 30621 1N4148 6032 4822 130 30621 1N4148 6105 4822 130 30621 1N4148 6106 4822 130 30621 1N4148 6107 4822 130 30621 1N4148 6108 4822 130 30621 1N4148 6109 4822 130 30621 1N4148 6660 4822 130 30621 1N4148 6661 4822 130 30621 1N4148 6700 4822 130 30621 1N4148 6830 4822 130 31983 BAT8S 7009 5322 130 41982 BC848B 7010 5322 130 41982 BC848B 7030 5322 130 41982 BC848B 7031 5322 130 41982 BC848B 7032 5322 130 41982 BC848B 7100 5322 130 41982 BC848B 7102 5322 130 41982 BC848B 7120 5322 130 41982 BC848B 7150 5322 130 41982 BC848B 7601 5322 130 41982 BC848B 7604 5322 130 41982 BC848B 7605 5322 130 41982 BC848B 7608 5322 130 41982 BC848B 7700 5322 130 41982 BC848B 7720 5322 130 41982 BC848B

Recommended Safety Parts

Item Part No. Description

7826 5322 130 41982 BC848B 7850 5322 130 41982 BC848B 7867 5322 130 41982 BC848B

4822 255 70261 CRT socket 4822 267 51249 CRT socket DAF

4822 26731858 Con. 1P 2320 4822 122 33172 390pF 5% 50V 2383 4822 124 40433 47uF 25V 2508 4822 122 33893 18nF 10% 63V 2510 4822 122 33893 18nF 10% 63V 3306 4822 051 20153 15K 5% 0.1W 3308 4822 051 20008 0 ohm jumper 3309 4822 052 10102 1K 5% 0,33W 3329 4822 052 10102 1K 5% 0,33W 3349 4822 052 10102 1K 5% 0,33W 3354 4822 051 20109 10 ohm 2 5% 0,5W 3355 4822 051 20109 10 ohm 2 5% 0.1W 3356 4822 051 20008 0 ohm Jumper 3386 4822 052 10108 1 ohm 5% 0,33W 3386 4822 052 10128 1 ohm 5% 0.33W 3387 4822 052 10109 10 ohm 5% 0,33W 3388 4822 052 10689 68 ohm 5% 0,33W 3391 4822 051 20008 0 ohm jumper 3500 4822 052 10279 27ohm 5% 0,33W 3512 4822 051 20008 0 ohm Jumper 6344 4822 130 30621 1N4148 6501 4822 130 30621 1N4148 6504 4822 130 30621 1N4148 6505 4822 130 30621 1N4148 6506 4822 130 30621 1N4148 7301 5322 130 41982 BC848B 7321 5322 130 41982 BC848B 7340 5322 130 41982 BC848B 7365 5322 130 41982 BC848B 7366 5322 130 41982 BC848B 7503 4882 130 44196 BC548C 7504 5322 130 60068 BC558C

4882 265 31251 Con. 5P (I27) 1600 4882 071 51001 Fuse T100mA 2350 4822 126 10002 100nF 20% 50V 2352 4822 124 41579 10uF 20% 50V 2353 4822 124 41579 10uF 20% 50V 2354 4822 124 41579 10uF 20% 50V 2355 4822 124 41579 10uF 20% 50V 2356 4822 124 41579 10uF 20% 50V 2357 4822 124 41579 10uF 20% 50V 2358 4822 124 41579 10uF 20% 50V 2359 4822 124 41579 10uF 20% 50V 2360 4822 124 41579 10uF 20% 50V 2361 4822 124 41579 10uF 20% 50V 2362 4822 124 41579 10uF 20% 50V 2363 4822 124 41579 10uF 20% 50V 2365 4822 124 41579 10uF 20% 50V 2367 4822 124 41579 10uF 20% 50V 2368 4822 124 41579 10uF 20% 50V 2373 5322 126 10223 4.7nF 10% 63V 2378 5322 126 10223 4.7nF 10% 63V 2382 5322 122 34123 1nF 10% 50V 2383 5322 122 34123 1nF 10% 50V 2386 5322 122 34123 1nF 10% 50V 2387 5322 122 34123 1nF 10% 50V 2388 5322 122 34123 1nF 10% 50V 2389 5322 122 34123 1nF 10% 50V 2390 5322 122 34123 1nF 10% 50V 2391 4822 126 10002 100nF 20% 50V 2394 4822 126 10002 100nF 20% 50V 2395 5322 122 34123 1nF 10% 50V 2396 4822 122 33172 390pF 5% 50V 2397 4822 122 33172 390pF 5% 50V 2398 4822 126 10002 100nF 20% 50V 2401 4822 126 10002 100nF 20% 50V 2408 4822 126 10002 100nF 20% 50V 2436 5322 122 34123 1nF 10% 50V 2437 5322 122 34123 1nF 10% 50V 2438 5322 122 34123 1nF 10% 50V 2448 5322 122 34123 1nF 10% 50V 2449 5322 122 34123 1nF 10% 50V 2452 5322 126 10223 4.7nF 10% 50V 2453 5322 126 10223 4.7nF 10% 50V 2454 5322 126 10223 4.7nF 10% 50V 2455 5322 126 10223 4.7nF 10% 50V 2602 4822 122 33177 10nF 20% 50V 2604 4822 126 10002 100nF 20% 50V 2607 4822 124 41579 10uF 20% 50V 2619 4822 126 10002 100nF 20% 50 2620 4822 126 10002 100nF 20% 50V 2624 4822 126 10002 100nF 20% 50V 2625 4822 122 33893 18nF 10% 50V 2627 4822 124 41579 10uF 20% 50V 2628 4822 124 41579 10uF 20% 50V 3364 4822 051 20472 4k7 5% 0.1W 3376 4822 051 20472 4k7 5% 0.1W 3382 4822 051 20332 3k3 5% 0.1W 3383 4822 051 20332 3k3 5% 0.1W 3387 4822 051 20332 3k3 5% 0.1W 3389 4822 051 20332 3k3 5% 0.1W 3391 4822 051 20332 3k3 5% 0.1W

2PHILIPS MD 1.2E/AA

Recommended Safety Parts

Item Part No. Description

3395 4822 051 20008 0 ohm jumper 3443 4822 051 20332 3k3 55 0.1W 3444 4822 051 20332 3k3 5% 0.1w 3613 4822 051 20008 0 ohm jumper 3614 4822 051 20008 0 ohm jumper 3615 4822 051 20008 0 ohm jumper 3616 4822 051 20008 0 ohm jumper 3626 4822 051 20153 15k 5% 0.1W 5351 4822 157 51462 10uH 6384 4822 130 30621 1N4148 7350 4822 209 83163 LM833N 7351 4822 209 83163 LM833N 7382 5322 130 41982 BC848B 7383 5322 130 41982 BC848B 7387 5322 130 41982 BC848B 7389 5322 130 41982 BC848B 7415 5322 130 41982 BC848B 7420 5322 130 41982 BC848B 7427 5322 130 41982 BC848B 7430 5322 130 41982 BC848B 7432 5322 130 41982 BC848B 7433 5322 130 41982 BC848B

4822 492 62076 Spring fix. transistors

4822 265 31251 Con. 5P eco-duo 1,25 2757 4822 124 41579 10uF 20% 50V 2758 4822 124 41579 10uF 20% 50V 2787 4822 122 30103 22nF 80% 63V 2788 4822 122 30103 22nF 80% 63V 3752 4822 052 10828 8 ohm 2 5% 0.33W 3753 4822 052 10828 8 ohm 2 5% 0.33W 6770 4822 130 30621 1N4148 2759 4822 124 41579 10nF 20% 50V 2760 4822 124 41579 10uF 20% 50V 2761 4822 124 41579 10uF 20% 50V 2762 4822 126 10002 100nF 20% 25V 2763 4822 124 41579 10uF 20% 50V 2776 4822 122 33893 18nF 10% 63V 2779 4822 126 10002 100nF 20% 25V 2786 4822 124 41579 10uF 20% 50V 2787 4822 124 41579 10uF 20% 50V 2788 4822 122 33893 18nF 10% 63V 2789 4822 126 10002 100nF 20% 25V 3761 4822 051 20332 3k3 5% 0.1W 3762 4822 051 20332 3k3 5% 0.1W 3779 4822 051 20332 3k3 5% 0.1W 3794 4822 051 20332 3k3 5% 0.1W 3798 4822 051 20332 3k3 5% 0.1W 3799 4822 051 20332 3k3 5% 0.1W 6775 4822 130 30621 1N4148 6790 4822 130 30621 1N4148 7770 5322 130 41982 BC848B 7771 5322 130 41982 BC848B 7773 5322 130 41982 BC848B 7780 5322 130 41982 BC848B

4822 276 13603 Mains switch

4822 265 30389 Con. 2P (Fixed pin)

4822 256 91766 Led holder 3520 4822 053 21475 4M7 5% 0.5W 3521 4822 053 21475 4M7 5% 0.5W 7811 4822 130 44197 BC558B 7812 4822 130 44197 BC558B

4822 265 10429 Pin strip (F92) 2406 4822 124 41579 10uF 20% 50V 2409 4822 124 40196 220uF 20% 16V 2410 5322 126 10223 4.7nf 10% 63V 2420 4822 122 33177 10nF 20% 50V 2424 4822 126 12944 47nF 10% 50V 2425 4822 126 12944 47nF 10% 50V 3420 4822 051 20472 4k7 5% 0.1W 3427 4822 052 10479 47 ohm 5% 0.33W 3429 4822 051 20332 3k3 5% 0.1W 3432 4822 051 20472 4k7 5% 0.1W 3448 4822 051 20472 4k7 5% 0.1W 6401 4822 130 30621 1N4148 6402 4822 130 30621 1N4148 6403 4822 130 30621 1N4148 6404 4822 130 30621 1N4148 6405 4822 130 30621 1N4148 6410 4822 130 42489 BYD33G 7402 5322 130 41982 BC848B 7403 5322 130 41982 BC848B 7404 5322 130 41982 BC848B 7405 5322 130 41982 BC848B 7406 5322 130 41982 BC848B 7411 5322 130 41982 BC848B 7420 5322 130 41982 BC848B

4822 276 13592 Mains switch

4822 265 30389 Con. 2P

4822 256 91766 LED holder 2604 4822 124 40196 220uF 20% 16V 3520 4822 053 21475 4M7 5% 0.5W 3521 4822 053 21475 4M7 5% 0.5W

Text

Diagram

Tuner & IF Diagram

3PHILIPS MD 1.2E/AA

PCB Identification

Safety instructions for repairs, Maintenance instructions,

Warnings and Notes

Safety instructions for repairs

1. Safety regulations require that during a repair the set should be connected to the mains via an isolating transformer; safety components, indicated by the symbol ▲ should be replaced by components identical to the original ones; when replacing the CRT, safety goggles must be worn.

2. Safety regulations require that after a repair the set must be returned in its original condition. In particular attention should be paid to the following points: As a strict precaution, we advise you to resolder the solder joints through which the horizontal deflection current is flowing, in particular:

• all pins of the line output transformer (LOT);

• fly-back capacitor(s);

• S-correction capacitor(s);

• line output transistor;

• pins of the connector with wires to the deflection coil;

• other components through which the deflection current flows.

- The cabinet should be checked for defects to avoid touching of any inner parts by the customer.

Test Point Large signal panel

Waveforms

Test Point - CRT Panel

Test Point -

CTI/Black Stretch Panel

Service Modes

DST, Error messages, Protections, Faultfinding and repair tips

In this chapter the following paragraphs are included:

6.1 Test points

6.2 Service Modes and Dealer Service Tool (DST)

6.3 Error codes and “blinking LED” procedure

6.4 Protections

6.5 Fault finding and repair tips

6.1 Test points The MD1 chassis is equipped with test points in

the service printing. These test points are referring to the functional blocks:

* A1-A2-A3, etc.:Test points for the audio processing circuitry * C1-C2-C3, etc.: Test points for the control circuitry * F1-F2-F3, etc.: Test points for the frame drive and frame output circuitry * L1-L2-L3, etc.: Test points for the line drive and line output circuitry * P1 -P2-P3, etc.: Test points for the power supply * T1-T2-T3, etc.: Test point for the teletext circuitry * V1-V2-V3, etc.: Test points for the video processing circuitry

6.2 Service modes and Dealer Service Tool(DST)

For easy installation and diagnosis the dealer remote control RC7150 is introduced. The RC7150 can be used for all new TV sets, including all set of the MD1 chassis. The

Wiring

Diagram

Note: This resoldering is advised to prevent bad

connections due to metal fatigue in solder joints and is therefore only necessary for television sets older than 2 years.

- The wire trees and EHT cable should be routed correctly and fixed with the mounted cable clamps.

- The insulation of the mains lead should be checked for external damage.

- The mains lead strain relief should be checked for its function in order to 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 resistance value between the pins of the mains plug and the metal shielding of the tuner or the aerial connection on the set. The reading should be between 4.5 MO and 12 MO;

• switch off the TV and remove the wire between the two pins of the mains plug.

Small signal panel

4PHILIPS MD 1.2E/AA

Service Modes Cont’d

RC7150 is also called Dealer Service Tool or DST. The ordering number of the DST (RC7150) is 4822 218 21232.

6.2.1Installation features for the dealer

The dealer can use the RC7150 for programming the TV-set with presets, TV-settings, Dish settings.

10 Different program tables can be programmed into the DST via a GFL or MD2 TV-set (downloading from the GFL or MD2 to the DST; see GFL or MD2 service manuals) or by the DST-l (DST/PC interface; ordering code 4822 218 21277). For explanation of the installation features of the DST, the directions for use of the DST are recommended (For the MD1 chassis, download code 4 should be used).

6.2.2 Diagnose features for the service

The MD1.2 sets can be put in the two service modes via the DST RC7150. These are the Service Alignment Mode (SAM) and the Service Default Mode (SDM). SDM can also be entered by short circuiting the “service” pins on the SSP.

6.2.2.1 Service Default Mode (SDM)

Entering the SDM:

- By transmitting the “DEFAULT’ command with the RC7150 Dealer Service Tool.

- By temporarily shorting pins S42 and S43 on the Small Signal Panel.

Exiting the SDM:

- Switch the set to stand-by (the error buffer is also cleared).

Note:

When the mains power is switched off while the set is in SDM, the set will enter to SDM immediately when the mains is switched on again.

The SDM has the following pre-defined conditions for all microprocessor controlled tuning and linear functions:

- For recognition of the SDM “SER” is displayed at the top of the screen.

- Tuning at 475.25 MHz (Secam on Multi France sets (with Nicam L), PAL on other sets).

- Volume level is set to 25% (of the maximum volume level). Other picture and sound settings are set to 50%.

- Auto switch off disabled (normally the set is automatically switched off when no video signal (IDENT) was received for iS minutes).

- Sleep timer is disabled.

- All other controls operate normally.

- When the microprocessor supports the blinking LED” procedure (See 6.3) and an error code is present in the error buffer, the LED will blink the number of times, equal to the value of the last error code.

This function will also work when there is no sound or picture.

6.2.2.2 Service Alignment Mode (SAM)

Entering SAM:

- By transmitting the “ALIGN” command with the RC7150 Dealer Service Tool (this works both while the set is in normal operation mode or in the SDM).

- By pressing the “MENU” and “-“ key on the local keyboard simultaneously when the set is in SDM.

Exiting SAM: Switch the set to stand-by.

Note:

When the mains power is switched off while the set is in SAM, the set will enter SDM immediately when the mains is switched on again.

In the SAM the following information is displayed on the screen:

- Software version (the software version of the microprocessor in the set is displayed. This software version identification corresponds with the software versions in the Software Survey as published in the Product Survey.

- Error code buffer (see paragraph 6.3).

- Options (see paragraph 8.4).

- Alignment and geometry information (see paragraph 8.2.1, 8.3.1 and 8.3.2).

Service Modes, DST, Error messages,

(1)Software version (2)Error buffer (3)Options (4)Alignments and geometry

M12XXx-x.x ① ER0000000≠

③ E2 N AX xx RD xx

UO N VP xx GD xx LL N 16 N VA xx BD xx NI N SS xx VL xx HD xx TT N D1 xx VS xx HW xx ET N D2 xx VG xx HP xx HI N D3 xx VA xx HC xx 14 N D4 xx NL xx HT xx

④

Figure 6.1

Screen of the Service Alignment Mode (SAM)

6.3 Error codes and “blinking LED” proce-

dure

The error code buffer contains all errors detected since the last time the buffer was erased. The buffer is written from left to right.

- The last error detected (actual) is the error at the left side

- The error buffer will be reset in the following cases:

1. exiting the SAM with the “standby” command on the remote control

2. transmitting the commands “DIAGNOSE 9 9 OK” with the DST

- By leaving the SAM with the mains switch, the error buffer is not reset.

Examples:

ERROR: 0 0 0 0 0 0: No error code detected ERROR: 3 0 0 0 0 0: Error code 3 is the last and

ERROR: 5 3 0 0 0 0: Error code 3 first and error

only detected error

code 5 last detected

The contents of the error buffer can also be made visible through the “blinking LED” procedure. This is especially useful when there is no picture. There are two methods:

1. When the SDM is entered, the LED will blink the number of times, equal to the value of the

last

error code. The LED will stay off briefly and blink again the number of times, equal to the value to the

2. With the DST

last

error code

all

error codes in the error buffer can be made visible. While in SDM, transmit the command: “DIAGNOSE x OK” where x is the position in the error buffer to be made visible x ranges from 1, (the last (actual) error) to 7 (the first error)

The LED will operate in the same way as in point 1, but now for the error code on position x.

Example: Error code position

12345 67

Error buffer 2410 0 00

• after entering SDM blink (2x) -

pause

- blink

(2x)

• after transmitting DST

blink (4x)

• after transmitting OST

blink -

• after transmitting DST

nothing happens

“DIAGNOSE 2 OK”

-pause

- blink (4x)

“DIAGNOSE 3 OK”

pause

- blink

“DIAGNOSE 4 OK”

with the with the with the

Note!

Note that it may take up to 7 seconds before the set response to a DIAGNOSE command. Interruption of the blinking sequence may lead to incorrect results.

Important!

Not all software versions of the MD1.2E chassis support the blinking LED procedure and the DIAGNOSE 99 command. Software versions NOT supporting the blinking LED procedure are

M12BAx-x.x

Error Error Description Blinking Possible code LED deflective

0 No error detected — — 1 BIMOS 1x IC7119

2 M5P3400/341 0 2x IC7353

3I2C bus error 3x All 12C-related

4 Wrong EEPROM 4x IC7685 (SSP) 5 EEPROM 5x IC7685

6 Tuner error 6x U1000 (SSP) 7 TXT error 7x IC7702 (SSP) 8 Histogram Proc. 8x IC7210

9 16:9 processor 9x IC7440

10 WSSB module 10x IC7540

11 Dolby processor lix IC7600

and

M12COx-3.x.

components

(TDA8366) error (SSP)

error (SSP)

components

defective (SSP)

error (reserved)

error (16x9 module)

error (WSSB module)

error (Audio module)

Table 6.1 Error code list Protections, Faultfinding and Repair tips

6.4 Protections

6.4.1 In the MD 1 .2E the following protections

are possible: Protections generated by the power supply:

• Overload protection ➝ Hick up mode

• Underload ➝ Hick up mode

• Over voltage ➝ Hick up mode

• Under voltage ➝ Hick up mode

Deflection:

• Horizontal Protection ➝ Supply to standby

• EW-Protection ➝ Supply to standby

• Vertical Protection ➝ BIMOS standby

mode

Software protection

• BIMOS 1C71 19 defective ➝ (Error code 1) Set can be switched between standby and ON, but there is no picture, no OSD, sound is only noise.

• SDA or SCL shorted ➝ (Error code 3) Set is switched to standby via standby line, set tries to restart.

• No +5Db or +85c at pC ➝ Set is switched to standby via standby line, set tries to restart.

6.4.2 Power supply protections

The power supply will go to a very good audible hick-up mode in the following situations:

• Overload protection

• Under load

• Over voltage

• Under voltage

In hick-up mode

Pin 1 of IC7520 starts up from the start circuit for approximately 2 seconds, immediately after that the protection is activated. This cycle is constantly repeated in hick-up mode. When the set is in hick-up mode a short squeak is audible every 2 seconds.

6.4.3 Horizontal-protection

When the beam current becomes too high for a long period the voltage across C2450 will drop. D6450 will start conducting and as soon as the voltage drop across R3456 is 0V7, TS7450 will conduct, making PROT high. Via the hold circuitry of the power supply, the set will stay in the protection mode (standby) and can only be reset by switching the set off and on via the mains switch. If the fault is still present, the set will switch to standby (protection mode) again.

6.4.4 EW-protection (not for 21” sets)

The East/West protection switches the power supply to standby via the signal line STANDBYSUPPLY PROTECTION. Via the hold-circuitry of the power supply, the set will stay in the protection mode (standby) and can only be reset by switching the set off and on via the mains switch. If the fault is still present, the set will switch to standby (protection mode) again. The East/West protection detects when the current through the East/West power output stage with T57480 is too high.

Note:

A current through the East/West stage that is too high can be caused by a defective part in the line-deflection circuitry!

The current through the East/West stage is measured on the LSP via 2 precision resistors (R3483 and R3484). In case of a line problem, the east/west-current becomes too high and the voltage across resistors R3483 and R3484 rises. When the voltage level exceeds 0.6V, D6480 starts to conduct and STANDBY-SUPPLY PROTECTION becomes HIGH. When the voltage across C2480 is very high (e.g. when a line problem is already present when the set is switched on with the mains switch), D6481 and D6482 conduct and EWPROTECTION is activated very fast.

The East/West protection becomes active in the following cases:

1. Bad contacts of horizontal deflection circuit:

• bad contacts of horizontal deflection coil

• bad contacts of linearity corrector coil L5421

• bad contacts of S-correction capacitor C2427

2. Bad contacts of flyback capacitor C2425.

3. Shorted flyback diode D6421 or D6423.

4. Shorted S-correction capacitor C2427.

5. Bad solder contacts in the line output stage. When EW-protection has been active, the line output transistor 7420 may also be defective.

6.4.5 Vertical-protection

The vertical output stage creates VERTICALPROTECTION pulses at every flyback pulse when it is functioning correctly. These pulses are sensed by the BIMOS IC7119-4D on pin 37. When the pulse train is interrupted, the BIMOS will switch to BIMOS STANDBY mode. In the BIMOS STANDBY mode, the BIMOS switches

off the VDRIVE+ and VDRIVE- while the RGB outputs are blanked. Circuit breaker 1463 may be open. Probably, the line output stage will not work and the power supply will switch to hick-up mode (under voltage protection).

6.4.6 Software protection

The software protection is managed by the microprocessor. It continuously verifies the presence of the +5 and +8 supply voltages on pin 34 and the activity of the PC bus. When the protection becomes active, the software will switch the power supply on and off continuously via the STANDBY line. In this situation the power supply produces a squeaking sound.

Service Modes, DST, Error messages,

- I2C protection The I2C bus is controlled at each I2C command. Therefore every I2C command has a defined start/stop condition. When the defined start/stop condition is repeatedly incorrect, error 3 is placed in the error buffer and the set switches to software protection.

I2C protection is generated in the following situations:

• SDA shorted to earth

• SCL shorted to earth

• SDA and SCL shorted

When SCL or SDA is shorted, the set tries to restart and the LED lights in a clearly recognisable pattern.

• SDA/SCL shorted when the set is switched ON with the mains switch: LED is 8 seconds RED, 8 seconds GREEN, flashes RED, 8 seconds GREEN, flashes RED, 8 seconds GREEN, flashes RED, etcetera.

• SDA/SCL shorted during operation LED is 8 seconds GREEN, flashes RED, 8 seconds GREEN, flashes RED, et cetera.

- +5Db and +8Sc protection of the microprocessor +5Db and +8Sc are the main supply voltages of the entire small signal processing of the set. At pin 34 the microprocessor senses whether the supply voltages +5SDb or +8Sc coming from the power supply are present. When one or both the supply voltages are missing, the set switches to software protection.

6.5 Fault finding and repair tips

Note that for 21” sets, voltages and waveforms may differ.

6.5.1 General

LED indication after start-up procedure is completed

- No LED Set is switched OFF, supply problem or microprocessor problem.

- LED continuously Set is in standby, control part defective, standby mode defective.

- LED blinking Set in SDM, transmitting error buffer.

Audible checks

- Demagnetisation audible: mains voltage is present at LSP.

- EHT audible: supply is operational (line output stage only works in case VOS (+140V for 25 & 29”; +95V for 21”) is present.

- Hick-up sound power supply audible: power supply is shorted. Check the LOT (item 5430) and the line output transistor T57420.

6.5.2 Fault finding in the power supply

In case of a power supply problem, the power supply can be simplified to a stand alone power supply at low voltages (low risk) as follows:

Control part of the power supply

1. Disconnect the SSP (as a result the line will not function any more and therefore will no longer be a load of the power supply) or disconnect the line by removing jumper 9400 and R3400 (if present) on the LSP.

2. Connect an external DC power supply between supply pin 1 IC7520 (via a diode e.g. BYD33D - with cathode to supply pin 1 IC7520) and hot earth (e.g. earth of the big smoothing capacitor C2505).

3. Connect a oscilloscope to test point P4 at pin 3 IC7520.

4. Turn up the external DC supply voltage slowly to 17V DC.

Remark:

The IC starts at a supply voltage of 14V DC, after that the supply voltage can drop to approx. 9V DC. At approximately 18V DC, over voltage protection becomes active, resulting in a supply voltage drop below 7V DC before a new start-up is performed by turning up the supply voltage above 14V DC.

5. The correct (measured) situation is displayed in . Other results indicate a defect in the power supply control part (IC7520 or peripheral components at pins 10 or 11).

Figure 6.2

5V/div; 5u5/div

➝ 40KHz pulse

Energy transfer of the power supply (only if control part is OK)

6. Apply action 1, 2 and 4 as described earlier..

7. Connect a lamp of 230V/100W across the VOS output capacitor C2569.

8. Connect a 1kΩ resistor between the +5 STANDBY (connector 7L10) and the STANDBY line (connector 8L10) to switch the power supply to normal operation.

9. Connect the mains connector to a VARIAC but leave it at 0.

10.Connect a voltmeter across C2569 and an oscilloscope between the drain of T57541 (25 & 29”) or T57540 (21”) and hot earth.

11.Slowly increase the mains input voltage by the VARIAC (in this way further damage to the power supply can be avoided).

Protections, Faultfinding and Repair tips,

The waveforms for the following mains voltage are given:

Mains in voltage 10V AC: 20kHz and VOS 7V5 20V AC: 40kHz and VOS 30V 40V AC: 40kHz and VOS 80V 65V AC: 40kHz and VOS 140V > 65V AC: Stable situation, so 40kHz

and 140V

In case of a feedback problem, the situation will not stabilise or the voltage will exceed 140V (95V with 21”)

5PHILIPS MD 1.2E/AA

Service Mode Cont’d

1. Figure 6.3: Mains in 10VAC 10V/div; bus/div

2. Figure 6.4: Mains in 20V AC 20V/div; 5uS/div

➝ 40kHz pulse ➝ VOS 30V

3. Figure 6.5: Mains in 40V AC 50V/div; 5uS/div

➝ 40kHz pulse ➝ VOS 80V

4. Figure 6.6: Mains in 65V AC 50V/div; 5uS/div

➝ 40kHz pulse ➝ VOS 140V

6.5.3 Fault finding of the horizontal circuitry

When the horizontal circuitry itself is defective, it can be simplified to a stand alone “switched mode supply” at low voltages (low risk) as follows:

1. Disconnect the set from mains.

2. Disconnect the SSP by removing all cables to

the SSP.

3. Connect an external 50V DC (or 40V DC)

supply with current measurement possibility across C2400.

4. Replace the HDRIVE by an external LF

generator (1TL level (between 0 and 5V); duty cycle 50%) with a 16 kHz pulse at the base of TS741 0 (near LOT at the side of the PCB).

5. Connect a oscilloscope to test point L1

(collector of line output transistor 7420).

Possibilities:

1. Figure 6.7:

L3; test point at collector line output transistor (7420) 50V/div; 10pS/div Current from external DC supply approx. 100mA

Observation: normal 16kHz pulses and 100mA supply current

Correct horizontal circuitry

Note that the amplitude of the signal strongly depends on the frequency of the generator.

2. Figure 6.8:

L3; test point at collector line output transistor (7420) 50V/dlv; 10µS/div

Line deflection open: Current from external DC supply is approximately 100mA.

Observation: small pulse followed by wide pulse and 100mA supply current

Causes: horizontal deflection coil open linearity coil L5421 open S-correction C2427 open

3. Figure 6.9: L3; test point at collector line output transistor (7420) 50V/dlv; 10µS/div Current from external DC supply approx 500mA!!

Observation: fast oscillations and 500mA supply current Cause:horizontal deflection shorted (e.g. line deflection coil shorted) When the line deflection is not completely shorted but only a number of windings are shorted, the waveform does not show the oscillation and the current of the external DC supply is approximately 200mA.

4. Figure 6.10: L3; test point at collector line output transistor (7420) 100V/div; 10µS/div

Current from external DC supply is approxImately 150mA Observation: flyback time is shorter, one extra pulse in between, 150mA supply current Cause: flyback capacitor C2425 open

5. Figure 6.11: L3; test point at collector line output transistor (7420) 100V/div; 10µS/div

Current from external DC supply > 1A

Observation: 2 pulses per cycle extra and

supply current from more than 1A

Cause: short-circuit in picture tube (e.g. EHT to

Aquadag)

Service Modes, DST, Error messages,

6.5.4 Fault finding “no picture, no protection” (problem in the video controller IC part TDA8366-4C)

When there is no picture and no protection, it is most likely that there is a problem with the BC_INFO caused by the TDA8366, the RGB amplifiers or the picture tube.

For measuring, connect a video generator (e.g. PM5518) at the aerial input with a white pattern to the tuner. Trigger the oscilloscope field

frequent. A stable picture is obtained if triggered with VDRIVE+ at pin 4 S11.

Normal start up procedure

1.First phase of start up; 4 white measuring lines (lines 15,16, 17, 18) and the main picture is muted (wave forms are better visible if the picture tube is cold);

Figure 6.12: Red (pin 8 of connector R43 on the CRT panel) and green gun (pin 6) 100V/div DC; 100 µs/div

The total beam current is measured and fed back to pin 16 TDA8366 (IC7119) The TDA8366 checks the voltage at pin 16 of the TDA8366 during these lines <4.5V: set remains in this phase <4.5V: set continues with start up phase 2

2. Second phase of start up; each beam is separately measured and the main picture is still muted. Line 15 is Red, line 16 is Green and line 17 is Blue. BC_INFO is measured.

- differences between the lines (guns) are compensated

- when the differences are minimal the set continues with phase 3, otherwise it remains in phase 2

Figure 6.13: Red (lower line) (pin 8 of connector R43 on the CRT panel) and green (upper line) gun (pin 6) 50V/div AC; 100µs/div

3. After start up the picture is present and differences in cut-off points of the R, the G and the B gun are compensated continuously.

Repair procedure Typical situation: no picture and no error

codes

- Switch the set on.

- In a 4:3 set, press “picture size” to switch the set to “16:9 compressed” mode.

- In a 16:9 set, shift down the picture with the cursor keys.

The start up phase of the set can be identified:

1. A bright white horizontal line at the top; the rest of the picture is dark (set hangs in first phase of start up procedure) Oscilloscope picture of the voltage over the guns looks like figure 6.12.

TDA8366 (IC7119), picture tube and RGB amplifiers are OK

There should be 4.5V at pin 16 TDA8366. Possible problem: if there is no 4.5V present at

pin 16 of TDA8366, there is a defect (in one or more of the components) in the BC_INFO feedback loop.

2. Small horizontal red, green and blue lines at the top; the rest of the picture is dark (set hangs in second phase of start up procedure)

TDA8366 is OK

Possible problem: one or more of the guns of

the picture tube are bad. Measure at pin 16 TDA8366 which feedback line(s) (the R or G or B line) is/are smaller; the corresponding amplifier(s) or gun(s) is/are faulty.

3. No lines visible (picture dark)

Measure pin 16 TDA8366; possible measurements:

- 0V: Check TDA8366 (sandcastle and the supply voltage)

-5V: Check RGB amplifiers Short pin 16 TDA8366 to ground, now there will be measuring lines (at continuously 5V, phase 1 and 2 is bypassed)

- Pulses: there is a measuring line, so the TDA8366 is OK Measure on cathode on the CRT panel if the measuring lines are present: Yes ➝ BC_INFO circuit is open or no HEATER voltage No ➝ RGB amplifier problem

8. Electrical alignments

General: the Service Default Mode (SDM) and Service Alignment Mode (SAM) are described in chapter 6.

Alignment conditions:

All electrical adjustments should be performed under the following conditions:

• Power supply voltage: 240V±10%, 50Hz ±5%.

• Warm-up time: ≈ 10 minutes

• The voltages and oscillograms are measured

in relation to the tuner earth.

• Test probe: Ri > 10MΩ; Ci < 2,5 pF.

8.1 Adjustments on the large signal panel

8.1.1 95V/140V supply voltage

For 21” TV-sets

Connect a voltmeter to the cathode of D6567. With the aid of R3532 adjust the power supply voltage to 95V + 0,5V

For sets 21”

Connect a voltmeter to the cathode of D6567. With the aid of R3559 adjust the power supply voltage to 140V± lV.

8.1.2 VG2 adjustment

Connect a pattern generator displaying a full black picture. Switch the TV-set to the service default mode (see chapter 6). Connect an oscilloscope to the picture tube cathodes for red, green and blue (pins 6, 8 en 11 of the picture tube socket). Set the oscilloscope to DC, 50 V/div and 2 ms/div. Measure the DC level of the measuring pulses at the end of the frameblanking (see fig. 8.1). Using the Vg2 potentiometer on the linetransformer (bottom potentiometer) the measuringpulse with the highest level must be set to +160V ± 2V.

8.1.3 Focusing

Is aligned using the focuspotentiometer on the linetransformer (top potentiometer).

8.2 Alignments on the small signal panel

8.2.140.4 MHz IF filter (only for sets with SECAM LL’ reception)

Using a signal generator (e.g. PM5326) and a capacitor of 5,6 pF supply a 40,4 MHz signal to pin 17 of the tuner. Connect an oscilloscope to pin 1 of filter 1016. Switch on the set and select in the installation menu MANUAL; SYSTEM EUR.W. Align coil L5117 for maximum DC output voltage.

8.2.2 AFC

Switch the set to service default mode (see chapter 8). Using a pattern generator (e.g. PM5518) supply a signal on a frequency of 475,25 MHz Align coil L5114 for optimal picture quality.

8.2.3 Picture demodulator (only for sets with SECAM LL’ reception)

Using a signal generator (e.g. PM5326) supply a

32.95MHz signal via a 5,6 pF capacitor to pin 17 of the tuner. Align the signal level of the generator so that the DC-voltage on pin 5 of the tuner is 5V. Switch on the set and select in the installation menu MANUAL; SYSTEM FRANCE. Align capacitor C2106 for minimal voltage on pin 5 of the tuner.

8.2.4 RF-AGC

If the signal of a strong local transmitter is distorted, align the value for AX (AGC crossover) in the service menu (see chapter 8) until the picture is no longer distorted.

8.2.5 Audio demodulator (Not for sets with LL’ and NICAM reception possibility)

Using a signal generator (e.g. PM5326) supply a

38.9MHz signal via a 5,6 pF capacitor to pin 17 of the tuner. Connect an oscilloscope (2ms/div) to pin 12 of IC7033 (TDA3845). Align coil L5030 for minimal amplitude.

8.3 Picture tube alignments

8.3.1 White balance

Connect a pattern generator and select a white picture. Set contrast to maximum (63) for 21” or to 40 for 21” tv-sets. Use the / keys to select an alignment and the / keys to change the value. Set GD to 50, RD to 57 and BD to 45. If necessary change the settings for RD and BD for a correct white balance.

8.3.2 Geometry adjustments (for software versions M12COx-3.x and M12BAx-x.x)

Connect a pattern generator and select a geometry pattern (signal at 475.25 MHz)

• Switch to the Service Default Mode, then to the Service Alignment Mode.

• Select the desired alignment with the / keys.

• Change the selected alignment with the / keys.

• A value between 0 and 63 can be selected.

• Changed values are stored immediately.

Vertical VP: Vertical Shift

Set this for the correct vertical position.

VA: Picture height

Set this for the correct picture height.

VL: Vertical linearity

Set this so that the vertical centre of the

➝

picture is at the centre of the tube.

VS: Vertical S-correction Set this so that the height of the squares in the

top of the picture equal the height in the bottom of the picture.

Horizontal HD: Horizontal shift.

Set this so that the horizontal centre of the picture is on the centre of the tube.

For sets with a screen size larger than 21”, the following alignments can be done as well. For 21” sets these alignments have no function.

HW: East-west width

Align the picture width with this.

HP: East-west parabola correction

Set this so that the vertical lines at the sides of the screen are straight.

HC: East-west corner-correction.

Set this so that the vertical lines are straight in the corners.

HT: Trapezium correction

Set this so that the vertical lines are as

vertical as possible. Adjustments for 16:9 sets (reserved) 16 = N 4:3 tube (options SS, D1, D2, D3 and

D4 not available (blue))

16 = Y 16:9 tube (options SS, D1, D2, D3 and

D4 available)

8.4 Options

E2: Number of Euro/Scart connectors

(options N or Y)

N 1 Euro/Scart connector present Y 2 Euro/Scart connectors present

UO: Tuner type

N UHFNHF tuner (item 1000 is UV9165) Y UHF tuner (item 1000 is UV9445).

Used in the United Kingdom (/05 sets) LL:Nicam L (options N or Y)

N Nicam L not present Y Nicam L present (Nicam L panel

required and item 7353 is M5P3410) NI:Nicam (stereo) sound (options N or Y)

N Only 2C5 stereo, no Nicam (item 7353 is

M5P3400)

Y 2C5 and Nicam stereo (item 7353 is

M5P3410)

U: Teletext (options N or Y) N No Teletext present Y Teletext present

ET: (Eastern Europe) teletext type

(options N or Y)

N No Eastern Europe teletext Y Eastern Europe teletext (/58 sets)

14: 14:9 Picture format supported by 4:3

tube (options N or Y)

N Not supported Y Supported

HI: Histogram (not with software version M1

2BAx-x.x)

N No Histogram present (options VG, VA

➝

and NL not available (blue))

Y Histogram present (options VG, VA and

NL available) M2: MD1 .1 E or MD1 .2E chassis

(only with software version M12BAx-x.x)

N MD1.1E chassis Y MD1.2E chassis

6PHILIPS MD 1.2E/AA

Alignments

(16;9 & Surround Sound)

8. See MD1.2E AA for a description of the basic alignments for the MD1 .2E AA software.

Software version: M12BAx-4.x M1200x-3.2 4:3 sets (NO flashing LED procedure, replaced by M12COx-4.0) M12COx-4.0 4:3 sets (WITH flashing LED procedure, replaces M1200x-3.2)

In the Service Default and Service Alignment Mode widescreen sets switch to Wide Screen format. All the geometry alignments also have to made in the WideScreen mode.

In this supplement the additional options for 16:9 and Dolby Pro Logic sets with the following software are described:

M12COx-5.1 (or later) 16:9 sets

(also suitable for 4:3 sets) Ml 2DOx-1.0 (or later) Dolby Pro Logic sets

(4:3 and 16:9)

SS Picture dimension and rotation coil

dependent setting.

SS Picture tube / rotation coil 1 32” with rotation coil

2 28’ with rotation coil 3 24” with rotation coil 4 32” without rotation coil 5 28” without rotation coil 6 24” without rotation coil

Supply Voltage Diagram

8.1 Options and alignments

HI Histogram option. This option is not

used and is not selectable.

WB Format detection for 4:3,14:9 or 16:9

picture (16:9 sets only) and Dolby Pro Logic sound (Dolby Pro Logic sets only) by the teletext IC. Y Automatic detection on N Automatic detection off Automatic 16:9 detection via the Scart cable also functions if ‘WB N’ is set.

16 Picture tube aspect ratio

Y 16:9 picture tube N 4:3 picture tube If ‘16 N’ is set, parameters WB*, RT, SS, Dl, D2, D3 and D4 automatically become blue and are made non-selectable.

* In Dolby Pro Logic sets the WB option can be

selected independently of the 16 option, as the automatic sound detection can also be switched on and off in this manner.

RT Rotation coil (picture tilt) Y Rotation coil present; An option to tilt the

picture appears under the YELLOW key in the operating menu. N No rotation coil present.

D1 HD-value deviation in 4:3, Zoom 14:9

and Zoom 16:9 in relation to WideScreen mode.

D2 HD-value deviation in SuperWide

(panorama) format in relation to WideScreen mode.

D3 HP-value deviation in 4:3, Zoom 14:9

and Zoom 16:9 in relation to WideScreen mode.

D4 HP-value deviation in SuperWide

(panorama) format in relation to WideScreen mode.

The alignment settings are dependent on picture tube format:

Picture tube format 20” 24” 28” 32”

D1 12 9 9 8 D2 2 3 3 5 D3 10 9 9 8 D4 7 9 9 8

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