Philips-MKH300-cdu-sm 电路图 维修手册.pdf

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1、RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 RadioFans.CN 收音机爱 好者资料库 O co co 00 co ( O T HAT DETECTI OW y MOT OR LOAOI HG T HAT DETECTI OW y HO TOR DI SC DRI VE COMi KEY BOARD y y y u DI SPL AY r/ r/ u u / - / u AO - A7 DO -0 3 16kzyxwvutsrqponmlkjihgfedcbaZYXWVUTSRQPONMLKJIHGFEDCBA X 4 DRAM n I

2、- o O CHECK OF THE PHOTODIODES STEP SIGNAL MODE 0 i 0 O REMARKS 1 D2 D1 D3 Power o f f Signa! Signa! depends on Distance !ens - IR LED of remote control D4 CHECK OF LASER SUPPLY The !aser, the !aser supp!y p!us the monitor diode form a feedback system. A defect i n the laser supply may result i n th

3、e destruction of the laser. I f in the case, the laser i s rep1aced,(=complete D.C.M. unit) the new laser w i l l also become defective. However, i t i s impossible to check and repair a feedback system i f a link i s missing. For t h i s reason the laser supply can be checked with the replacement c

4、 i r c u i t for laser assembly. STEP SIGNAL MODE O O 0 O O REMARKS 1 LO Service position 2 SK 1.8V DIRECTLY TO RftNEL 1 LM Service position 2 SK 170mV DIRECTLY TO RftNEL 2 LO Service position 2 SK 1.8V2.3 1 I 0 . , . The feedback system sees to i t that the same amount of current flows through the

5、LED. When SK i s open and when the SK i s closed the LEO emits l i l l l e light. 2 LM Service position 2 SK 170mV220 1 I 0 . , . The feedback system sees to i t that the same amount of current flows through the LED. When SK i s open and when the SK i s closed the LEO emits l i l l l e light. 3 LO P

6、ower on OV 0.2V No light ADJUSTMENT OF LASER CURRENT STEP SIGNAL MODE O 0 0 REMARKS 1 Power o f f Check i f f l e x - f o i l i s properly connected 2 Power o f f R136 1KQ +10% Pre adjustment ohmic value 3 Power o f f R128 Set to mid-position 4 Laser current voltage across R116 Test disc 5A Play mV

7、DC 15 mV I f 15mV then go to step 3 and set R128 to 1/4 or 3/4. Try again. 5 Laser current voltage across R i l 6 Test disc 5A Play mV DC R136 50 mV ADJUSTMENT OF FOCUS-OFFSET STEP SIGNAL MODE O ?= O O REMARKS 1 Power o f f R128 Set to mid-position 2 FE-FAG voltage across Cl32 Play Test disc 5A Trac

8、k 1 mV DC R128 400 mV + 40mV Fine adjustment CS 38 393 ELECTRI CAL PARTS LI ST - I C - U101 UI 02 U103 U104, 109 U110, 501 U105 UI 06 U107 U108 U111 U112 4822 209 73235 4822 209 73234 4822 209 72587 4822 209 83357 4822 209 83357 4822 209 61759 4822 209 70422 4822 209 63879 4822 209 73366 5322 209 86

9、518 TDA8809T/ C2 TDA8808T/ C3 TCA0372- DP2 NJM4560M NJM4560M SAA7310GP MPD41416- 20 ZC99685P/ P110 TDA1543 MC7805ACT 4822 209 11079 MC79M05CT - Tr ansi st or s - T101, 102 T501, 502 T104, 105 4822 4822 4822 130 130 130 40958 40958 44197 BC338- 25 BC338- 25 BC558B - Di odes - D101, 102 D105- 108 D109

10、 D501, 502 4822 130 32862 4822 130 30684 4822 130 30621 4822 130 30621 Zener HZ7C2 1N4002 1N4148 1N4148 - Pot met er - R128 4822 100 11725 R136 4822 100 11726 Pot m. t r i m 22k Pot m. t r i m 4k7 - Mi scel l eous - L101, 102 M101 X101 X102 4822 157 50975 4822 276 13093 4822 242 80247 4822 242 80248

11、 I nduct or I m H Tact swi t ch Cr y 1 11. 2896MHz Resonat or 4MHz Chi p Capaci t or s case 1206 3. 2 X 1. 6 X 1. 1 mm 63 V NPO 5 % X7R 10 % 4822 122 32479 1. 0 PF 4822 122 31961 68 pF 4822 122 32597 6. 8 nF 4822 122 32079 3. 3 PF 4822 122 31765 100 pF 4822 122 32442 10 nF 4822 122 32081 3. 9 pF 482

12、2 122 31767 150 pF 4822 122 31782 15 nF 4822 122 32082 4. 7 pF 4822 122 31965 220 pF 4822 122 31759 18 nF 4822 122 32507 6. 8 pF 4822 122 31771 390 pF 4822 122 31797 22 nF 4822 122 31971 1.0 pF 4822 122 31727 470 pF 4822 122 31981 33 nF 4822 122 31769 18 pF 4822 122 31746 1. 0 nF 4822 122 32542 47 n

13、F 4822 122 32482 22 pF 5322 122 33816 2. 2 nF 4822 122 32891 68 nF 4822 122 31756 33 pF 5322 122 33897 3. 3 nF 4822 122 32838 82 nF 4822 122 31772 47 pF 4822 122 31784 4. 7 nF 4822 122 33496 100 nF ( GB) Saf et y r egul at i ons r equi r e t hat t he set be r est or ed t o ifs or i gi nal condi t i

14、on and t hat par t s whi ch ar e i dent i cal wi t h t hose speci f i ed be used (NL) Vei l i ghei dsbepal i ngen ver ei sen, dat het appar aat i n zi j n oor spr onkel i j ke t oest and wor dt t er uggebr acht en dat onder del en, i dent i ek aan de gespeci t i ceer de, wor de n t oegepast . Bei j

15、eder Repa at ur si nd di e gei t enden Si cher hei t svor schr i l t en zu beacht en. Der Or i gi nal zust and des Ger at s dar f ni cht ver ander t wer den; fijr Repar at ur en si nd Or i gi nal - Er sat zt ei l e zu ver wenden. Le n o r me di si cur ezza esi gono che l appar ecchi o venga r i mess

16、o nel l e condi zi oni ori gi nal i e che si gno uti l i zzati i pezzi di r i cambi ago i dent i ci a quel l i speci f i cat i . Les nor me s de scur i t exi gent que l appar ei l soi t r em i s l tat d or i gi ne et que soi ent ut i l i ses l es pi ces de r echange i dent i ques cel l es spci f i e

17、s A- 7 CS 38 396 Chi p Resi st or s case 0805 2 X 1. 25 X 1 . 1 mm 0 1 W 5 X 4822 051 20008 0 R 4822 051 20439 43 R 4822 051 20202 2. 0 k 4822 051 20913 91 k 4822 051 20108 1. 0 R 4822 051 20479 47 R 4822 051 20222 2. 2 k 4822 051 20104 100 k 4822 051 20118 1 . 1 R 4822 051 20519 51 R 4822 051 20242

18、 2. 4 k 4822 051 20114 110 k 4822 051 20128 1. 2 R 4822 051 20569 56 R 4822 051 20272 2. 7 k 4822 051 20124 120 k 4822 051 20138 1. 3 R 4822 051 20629 62 R 4822 051 20302 3. 0 k 4822 051 20134 130 k 4822 051 20158 1. 5 R 4822 051 20689 68 R 4822 051 20332 3. 3 k 4822 051 20154 150 k 4822 051 20168 1

19、. 6 R 4822 051 20759 75 R 4822 051 20362 3. 6 k 4822 051 20164 160 k 4822 051 20188 1. 8 R 4822 051 20829 82 R 4822 051 20392 3. 9 k 4822 051 20184 180 k 4822 051 20208 2. 0 R 4822 051 20919 91 R 4822 051 20432 4. 3 k 4822 051 20204 200 k 1 4822 1 051 20228 2. 2 R 4822 051 20101 100 R 4822 051 20472

20、 4. 7 k 4822 051 20224 220 k 4822 051 20248 2. 4 R 4822 051 20111 110 R 4822 051 20512 5. 1 k 4822 051 20244 240 k 4822 051 20278 2. 7 R 4822 051 20121 120 R 4822 051 20562 5. 6 k 4822 051 20274 270 k 4822 051 20308 3. 0 R 4822 051 20131 130 R 4822 051 20622 6. 2 k 4822 051 20304 300 k 4822 051 2033

21、8 3. 3 R 4822 051 20151 150 R 4822 051 20682 6. 8 k 4822 051 20334 330 k 4822 051 20368 3. 6 R 4822 051 20161 160 R 4822 051 20752 7. 5 k 4822 051 20364 360 k 4822 051 20398 3. 9 R 4822 051 20181 180 R 4822 051 20822 8. 2 k 4822 051 20394 390 k 1 4822 051 20438 4. 3 R 4822 051 20201 200 R 4822 051 2

22、0912 9. 1 k 4822 051 20434 430 k i 4822 051 20478 4. 7 R 4822 051 20221 220 R 4822 051 20103 10 k 4822 051 20474 470 k 1 4822 051 20518 5. 1 R 4822 051 20241 240 R 4822 051 20113 11 k 4822 051 20514 510 k 1 4822 051 20568 5. 6 R 4822 051 20271 270 R 4822 051 20123 12 k 4822 051 20564 560 k i 4822 05

23、1 20628 6. 2 R 4822 051 20301 300 R 4822 051 20133 13 k 4822 051 20624 620 k 1 4822 051 20688 6. 8 R 4822 051 20331 330 R 4822 051 20153 15 k 4822 051 20684 680 k 1 4822 051 20758 7. 5 R 4822 051 20361 360 R 4822 051 20163 16 k 4822 051 20754 750 k 1 4822 051 20828 8. 2 R 4822 051 20391 390 R 4822 0

24、51 20183 18 k 4822 051 20824 820 k 4822 051 20918 9. 1 R 4822 051 20431 430 R 4822 051 20203 20 k 4822 051 20914 910 k 4822 051 20109 10 R 4822 051 20471 470 R 4822 051 20223 22 k 4822 051 20105 1. 0 M 4822 051 20119 11 R 4822 051 20511 510 R 4822 051 20243 24 k 4822 051 20125 1. 2 M i 4822 051 2012

25、9 12 R 4822 051 20561 560 R 4822 051 20273 27 k 4822 051 20155 1 . 5 M 4822 051 20139 13 R 4822 051 20621 620 R 4822 051 20303 30 k 4822 051 20185 1. 8 M 4822 051 20159 15 R 4822 051 20681 680 R 4822 051 20333 33 k 4822 051 20225 2. 2 M 4822 051 20169 16 R 4822 051 20751 750 R 4822 051 20363 36 k 48

26、22 051 20245 2. 4 M 4822 051 20189 18 R 4822 051 20821 820 R 4822 051 20393 39 k 4822 051 20275 2. 7 M 4822 051 20209 20 R 4822 051 20911 910 R 4822 051 20433 43 k 4822 051 20335 3. 3 M 4822 051 20229 22 R 4822 051 20102 1. 0 k 4822 051 20473 47 k 4822 051 20395 3. 9 M 4822 051 20249 24 R 4822 051 2

27、0112 1. 1 k 4822 051 20513 51 k 4822 051 20475 4. 7 M 4822 051 20279 27 R 4822 051 20122 1. 2 k 4822 051 20563 56 k 4822 051 20565 5. 6 M 4822 051 20309 30 R 4822 051 20132 1. 3 k 4822 051 20623 62 k 4822 051 20685 6. 8 M 4822 051 20339 33 R 4822 051 20152 1 . 5 k 4822 051 20683 68 k 4822 051 20755 7. 5 M 4822 051 20369 36 R 4822 051 20162 1. 6 k 4822 051 20753 75 k 4822 051 20825 8. 2 M 4822 L. ., , , 051 20399 39 R 4822 051 20182 1. 8 k 4822 051 20823 82 k 4822 051 20106 10 CS 38 397