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Daewoo DF-4500 Service Manual - Contents

Summary of DF-4500

  • Page 1

    S /m no. : df q75d2001 s ervice manual model: df-4500(s/p) df-4501(s/p) dfx-4502(s/p) dfx-4505(s/p) jan. 200 6 dvdr + vcr combi.

  • Page 2: Contents

    1 specifications...............................................................................................................2 trouble shooting....................................................................................................................3 waveforms...............................

  • Page 3: Specifications

    2 specifications general power requirements 200–240v~, 50/60 hz power consumption 26w dimensions (approx.) 430 x 92 x 312 mm (w x h x d) mass (approx.) 4.96 kg operating temperature 41°f to 95°f (5°c to 35°c) operating humidity 5% to 90% signal system pal colour recording recording formats dvd video...

  • Page 4: Troubleshooting

    Troubleshooting 3 1. No output voltage of power circuit get input, dc 200~240 valtage 1. Power circuit.

  • Page 5

    4 troubleshooting 2. System circuit.

  • Page 6

    5 troubleshooting p303 check remocon_in (pin2).

  • Page 7

    6 troubleshooting b. Digital board(mpeg).

  • Page 8

    7 troubleshooting noise appears on the playback screen. Is noise diminished by tracking adjustment. Noise band is trembled up and down? Re-adjust path. Is the height of ctl head normal? No dust? Is there problem in ctl input circuit and amplifier. Yes no no no is there ctl pulse at ic501 pin#97? Che...

  • Page 9

    8 troubleshooting no broadcasting signal received is the output at ic501 pin# 61(clk), 60 (data) normal? Is sif,video output at tmi(rf101) pin#16,19 normal? Check ic 501. Check ic 501. Check p302 yes yes no no no is video signal input at ic501 pin#56? Is there video output at p302 pin#5? Check tmi (...

  • Page 10

    9 troubleshooting cassette tape isn’t inserted. Is 5v voltage obtained at loading parts ic501 pin#63? Is 14v voltage obtained at capstan motor p501 pin#2? Check at ever 14v check d825 connect capstan and loading motor. Check connector and capstan motor. Yes no no no is 13v voltage obtained at each p...

  • Page 11

    10 troubleshooting g. Drum motor stops h. Capstan doesn’t rotate capstan doesn’t rotate. Is ever 14v voltage obtained at p501 pin#2? Yes no no no yes yes is capstan pwm fit to ic501 pin#77? Is 3.2v voltage obtained at p501 pin#5? Is 2.7v voltage obtained at p501 pin#9? Check p501 connector and capst...

  • Page 12

    11 troubleshooting 3. Video circuit a. Ee screen doesn’t appear ee mode picture ng is video signal input at ic301 pin#48,50,52,54? Is 5v supplied at pin#42,55,72,91of ic301? Is c.S, data, clock signal input pin#67,68,69 of ic301? Check if and scart jack. Check power circuit. Check ic501 pin #58,71,7...

  • Page 13

    12 troubleshooting b. Playback picture doesn’t appear 1) no vcr playback picture yes yes is y signal output at ic301 pin#46? Is video signal output at ic301 pin#65? Check and replace ic301. Pb video signal missing. Is envelope output from ic301 pin#79? No no same as ee mode check. Is 5v supplied at ...

  • Page 14

    13 troubleshooting 2)no dvd playback picture check rc54,(digital board) check r385, r386,r387,r400,r404(analog board) 2) no dvd playback picture.

  • Page 15

    14 troubleshooting is +5v supplied at ic301 pin#91? No no yes yes is video sw pulse input at ic301 pin#70? Is rec signal output from ic301 pin#94,95,89,90? Sp mode: 89,90 pin lp mode: 94,95pin check video head and connector. Is signal input into ic301 pin# 48,50,52,54,56? Check power circuit. Check ...

  • Page 16

    15 troubleshooting dvd is not recording check rc54.(digital board) check r385, r386, r387, r400, r404(analog board) at 2) dvd part.

  • Page 17

    16 troubleshooting 4. Audio (hi-fi model) no sound in rf e-e mode is audio signal output at ic602 pin #3, 13? A. No sound in e-e mode a. Rf e-e is audio signal output at ic251 pin#16,17? Are clk and data obtained at ic251 pin#42,43? No is 5v obtained at ic251 pin#40? Replace ic251. Yes yes is 12v ob...

  • Page 18

    17 troubleshooting b. Av1 e-e no sound in av1 e-e mode. No check input av1 jack is audio signal at ic251 pin#6, 7? Is audio signal output at ic602 pin #3, 13? Is audio signal output at ic251 pin#16,17? Are clk and data obtained at ic251 pin#42,43? No is 5v obtained at ic251 pin#40? Replace ic251. Ye...

  • Page 19

    18 troubleshooting c. Av2 e-e no sound in av2 e-e mode. No check input av2 jack is audio signal at ic251 pin#8, 9? Is audio signal output at ic602 pin #3, 13? Is audio signal output at ic251 pin#19, 20? Are clk and data obtained at ic251 pin#42,43? No is 5v obtained at ic251 pin#40? Replace ic251. Y...

  • Page 20

    19 troubleshooting d. Front e-e no sound in front e-e mode. No check input front jack is audio signal at ic251 pin#10,11? Is audio signal output at ic602 pin #3, 13? Is audio signal output at ic251 pin#19, 20? Are clk and data obtained at ic251 pin#42,43? No is 5v obtained at ic251 pin#40? Replace i...

  • Page 21

    20 troubleshooting e. No sound in dvd play mode and no vcr sound(digital board) f. No sound in e-e mode(digital board).

  • Page 22

    21 troubleshooting g. No normal audio playback in record/playback mode(check in rec mode) no normal audio playback in record/playback mode are there audio signal at ic251 pin#2~11? Is there recording signal at ic251 pin#21? Check input scart jack. Check input front jack. Check icd02(dvd) check signa...

  • Page 23

    22 troubleshooting h. No hi-fi playback audio(play mode) no check a.Sw at ic501 pin#19. Is audio signal at ic251 pin#41? Is audio signal output at ic602 pin #3, 13? Is audio signal output at ic251 pin#16,17? Are clk and data obtained at ic251 pin#42,43? No is 5v obtained at ic251 pin#40? Replace ic2...

  • Page 24

    23 troubleshooting i. No hi-fi playback in record/playback mode (rec mode) are there audio signal at ic251 pin#2~11? Is fm osc signal at ic251 pin#36? Check input scart jack. Check input front jack. Check icd02(dvd). Replace drum. Yes no no no is fm osc signal at p401 pin#2? Replace ic251 yes head c...

  • Page 25: Waveforms

    24 waveforms 1. Video ! (ic301-70) 5vp-p 1v/2msec/cm rec ! (ic301-70)5vp-p 1v/2msec/cm play @ (ic301-46) 520mvp-p 200mv/5usec/cm rec @ (ic301-46) 520mvp-p 200mv/5usec/cm play # (ic301-43) 520mvp-p 100mv/5usec rec # (ic301-43) 520mvp-p 100mv/5usec play $ (ic301-21) 600mvp-p 200mv/2msec/cm play(sp) vi...

  • Page 26

    25 2. Audio 2-1 audio(normal) 2-2 audio(hi-fi) * (ic301-15) 100mvp-p 20mv/0.5msec/cm rec ( (ic301-11) 1.5vp-p 0.5v/0.5msec/cm rec ) (ic301-100) 2.3vp-p 0.5v/0.5msec/cm rec 1 (ic301-8) 120mvp-p 50mv/0.5msec/cm play 2 (p202-1) 75vp-p 10v/20 µ sec/cm rec 3 (ic251-2) 80mvp-p 20mv/0.5msec ee/rec/play 4 (...

  • Page 27

    26 waveforms 3. Servo/syscon 8 (ic501-18) 5vp-p 2v/5msec/cm rec/play 9 (ic501-77) 5vp-p 2v/5 µ sec/cm rec/play 0 (ic501-76) 5vp-p 2v/5 µ sec/cm rec/play “ (ic501-94) 3vp-p 1v/5msec/cm rec ‘ (ic501-97) 4.4vp-p 1v/5msec/cm play + (ic501-90)25vp-p&5vp-p 1v/5msec/cm rec/play = (ic501-87) 2.5vp-p 1v/0.2m...

  • Page 28

    27 circuit diagram 1. Servo & syscon schematic diagram(ve1.0 pal rw combo).

  • Page 29

    28 circuit diagram 2. Av ic schematic diagram(ve1.0 pal rw combo).

  • Page 30

    29 circuit diagram 3. Hi-fi & sw & in out circuit schematic diagram(ve1.0 pal rw combo).

  • Page 31

    30 4. Adc/dac/video amp. Ic schematic diagram(ve1.0 pal rw combo) circuit diagram.

  • Page 32

    31 circuit diagram 5. Front part schematic diagram(ve1.0 pal rw combo).

  • Page 33

    32 circuit diagram 6. Tuner, nicam schematic diagram(ve1.0 pal rw combo).

  • Page 34

    33 circuit diagram 7. Power supply schematic diagram.

  • Page 35

    34 circuit diagram a a b b c c d d e e 4 4 3 3 2 2 1 1 +5v_stby +12v_o/f +3v3_stby +3v3_o/f +5v_o/f sdv25 +3v3_stby +1v8_stby +1v8_stby +12v_o/f +5v_stby +12v_o/f +3v3_o/f vcc +3v3_stby +5v_stby +3v3_stby +3v3_o/f power_on(l)_dvd [ 2 ] drawn designed checked approved model file name date revised rev...

  • Page 36

    35 circuit diagram a a b b c c d d e e 4 4 3 3 2 2 1 1 a_d q s 1 vc s-cs rs t sd a sd at a-ou t sc l vc lk scl usbm1 phy_ctl11 vdata-in phy_lreq1 vclk phy_ctl01 rst sda vstb phy_sclk usbp1 vr ef p a_dqs1 piderst# f_a[0..22] a_cke a_c k e a_clk# a_d q 6 a_d q 2 a_d q 1 f_a[0..22] apda[0..2] f_a22 f_d...

  • Page 37

    36 circuit diagram a a b b c c d d e e 4 4 3 3 2 2 1 1 d_dqs0 d_dqm0 d_cs# d_cas# d_we# d_ba1 d_ba0 d_dqm1 d_dqs1 d_cke d_clk d_clk# d_ra3 d_ra2 d_ra1 d_ra0 d_ra7 d_ra6 d_ra5 d_ra4 d_ra12 d_ra9 d_ra8 d_ra11 d_ra10 d_dq3 d_dq2 d_dq0 d_dq1 d_dq7 d_dq6 d_dq5 d_dq11 d_dq10 d_dq9 d_dq8 d_dq15 d_dq14 d_dq...

  • Page 38

    37 circuit diagram a a b b c c d d e e 4 4 3 3 2 2 1 1 apiocs16# apdd[0..15] apdiow# piderst# apdd2 apdd1 apdd3 apiordy apdmarq apintrq apdior# apda1 apda0 apdd5 apdd6 apda2 apdmack# apcs1# apdd0 apdd7 apdd4 ide28 apdd[0..15] apdd15 apdd14 apdd13 apdd12 apdd11 apdd10 apda[0..2] apdd9 apdd8 apcs0# co...

  • Page 39

    38 circuit diagram a a b b c c d d e e 4 4 3 3 2 2 1 1 33lk 33lk 33phy 33phy + 3 v3_o/f 33lk ixi phy_lps phy_lreq1 ixo phy_sclk ixo tpa0- tpb0+ phy_d0 tpb0- pc2 phy_ctl01 33phy iso tpbias0 phy_ctl11 pc0 phy_d1 ixi tpa0+ pc1 tpa0+ tpa0- tpb0+ tpb0- usbp1 usbm1 reset# +3v3_o/f 33lk 33lk 33phy 33phy 33...

  • Page 40

    39 circuit schematics 5 5 4 4 3 3 2 2 1 1 d d c c b b a a adc_vcc adc_vcc vcc adc_vcc adc_vcc +3v3_o/f adc_vcc adc_vcc vcc audio_out(l) [ 4 ] audio_out(r) [ 4 ] audio_in(r) [ 4 ] audio_in(l) [ 4 ] asdat0 [ 2 ] alrck [ 2 ] abck [ 2 ] aclk [ 2 ] arsdat [ 2 ] arclk [ 2 ] arlrck [ 2 ] arbck [ 2 ] vrst# ...

  • Page 41

    40 circuit schematics a a b b c c d d e e 4 4 3 3 2 2 1 1 dv25 prst avcc d2.5v vcc d3.3vs d3.3lvds +3v3_o/f rvcc mvcc vcc +3v3_o/f +3v3_o/f prst [ 8 ] reset_mt1818 [ 2 ] drawn designed checked approved model file name date revised rev no. Sheet / df-q74d2n-ls 1.1 daewoo electronics digital video lab...

  • Page 42

    41 circuit schematics 1 1 2 2 3 3 4 4 5 5 6 6 7 7 8 8 a a b b c c d d rfi1 rd[0..15] dv 2 5 18-gio3 18-gio2 piderst# apdd5 apdd4 apdd10 apdd11 apdd1 apdd14 apdd0 apdd7 apdd15 apdd9 apdd12 apdd13 apdd3 apdd2 rf2 rf1 sr3 sr5 hrst# sh1 sh2 wid7 rfs apcs1# apda2 apda0 apcs0# apda1 apdmack# apdd8 apdd6 a...

  • Page 43

    42 circuit schematics a a b b c c d d e e 4 4 3 3 2 2 1 1 ras1 dqmh1 cas1 rcs1 dqml1 ba0 rwe1 clk1 cke1 clk1 dqmh1 cke1 rcs1 ba0 ba1 ra2 ra0 ra7 rd15 ra10 ra5 rd3 ra6 rd12 ra5 ra4 ra10 rd10 rd5 ra3 rd0 rd11 rd11 ra9 rd2 ra1 rd10 rd8 rd5 ra3 rd6 rd0 ra8 rd9 ra4 ra7 ra9 rd14 rd7 rd1 rd2 ra6 ra2 rd6 ra...

  • Page 44

    43 circuit schematics a a b b c c d d e e 4 4 3 3 2 2 1 1 wid2 rf2 vr 0 st by p uh3 p uh7 sh2 eep_d io vr 1 sr4 sdata fr wid7 rrf1 p uh4 gi o2 wid4 sr2 po6 p uh2 2 vr 2 puh8 p uh1 2 slat wid6 p uh1 led 1 sr3 p uh4 sr6 mclk p uh1 1 po10 wid1 p uh5 eep_c s p uh2 1 sh4 vr 6 p uh2 rf1 vr 5 sr5 p uh3 sr1...

  • Page 45

    44 circuit schematics a a b b c c d d e e 4 4 3 3 2 2 1 1 tilt- tilt- tilt+ fr+ 18-gio0 tr+ tr- fr- tilt+ pwm4 hb- hu- a+ b- mute_1 b+ b- a- a+ hu+ hb+ hb- hv+ a- v u hw- b+ load+ w w hv+ pdm2 fg hw- pwm2 tr+ hw+ hv- hu- pwm1 load- fr+ v hu+ hw+ pwm5 pwm3 hv- u mute_2 tr- fr- pdm1 a- b- b+ a+ hv+ hw...

  • Page 46

    45 pcb circuit board 1. Main (analog board) pcb.

  • Page 47

    2. Power pcb pcb circuit board 46.

  • Page 48

    47 pcb circuit board 3. Mpeg(digital board)pcb.

  • Page 49

    48 plate earth av cover bottom screw tapptite chassis main cord power pcb power manual as 97p0997600 97p0617200 97p69db90b pvpwmse596 pvmpmse675 pvdkarpb6g eu kkp-419c yfh800 1.7m 97p0487004 7173300812 97pp347603 tt2 bin 3x8 mfzn bk df-q75(dv) hips(hb) b/cover+m/pcb jack fix instrument disassembly.

  • Page 50: Electrical Partslist

    49 electrical partslist loc parts_code parts_name parts_descr 01 pvacpsd340 accessory as f342dy(bt:aaa)4 dp01 97p95600d0 manual owners ec model dp02 97p881rp10 cable rf pal 1.0m dp03 97p0424100 cover accessory ld-pe t0.05 dp04 486a716202 battery aaa 1.5v(supergard) 02 pvpkcpn770 packing as df-q74d2n...

  • Page 51

    50 electrical partslist loc parts_code parts_name parts_descr c052 hcqk209cba c chip cera 50v ch 2pf c 1608 c053 hcqk209cba c chip cera 50v ch 2pf c 1608 c054 hcbk103kba c chip cera 50v x7r 0.01mf k 1608 c056 hcfh104zba c chip cera 25v y5v 0.1mf z 1608 c058 hcfh104zba c chip cera 25v y5v 0.1mf z 160...

  • Page 52

    51 electrical partslist loc parts_code parts_name parts_descr r088 hrfs153jba r chip 1/16 15k ohm j 1608 r098 hrfs133jba r chip 1/16 13k ohm j 1608 r099 hrfs133jba r chip 1/16 13k ohm j 1608 r108 hrfs750jba r chip 1/16 75 ohm j 1608 r127 hrfs103jba r chip 1/16 10k ohm j 1608 r152 hrfs103jba r chip 1...

  • Page 53

    52 loc parts_code parts_name parts_descr c275 cexf1c100a c electro 16v rsm 10mf 5x7 c276 cexf1c470a c electro 16v rsm 47mf (5x7) tp c278 cexf1c100a c electro 16v rsm 10mf 5x7 c279 cexf1c470a c electro 16v rsm 47mf (5x7) tp c283 cexf1c470a c electro 16v rsm 47mf (5x7) tp c292 cexf1c100a c electro 16v...

  • Page 54

    53 loc parts_code parts_name parts_descr c160 cbzp1c103m c cera semi 16v y5s 0.01mf m (axial) c207 cczj1h104z c cera 50v hikf 0.1mf z axl(1608) c220 cbzp1c103m c cera semi 16v y5s 0.01mf m (axial) c284 cczj1h104z c cera 50v hikf 0.1mf z axl(1608) c321 cczj1h104z c cera 50v hikf 0.1mf z axl(1608) c32...

  • Page 55

    54 electrical partslist loc parts_code parts_name parts_descr r278 rd-az511j- r carbon film 1/6 510 ohm j r302 rd-az822j- r carbon film 1/6 8.2k ohm j r305a rd-az474j- r carbon film 1/6 470k ohm j r306 rd-az434j- r carbon film 1/6 430k ohm j r307 rd-az392j- r carbon film 1/6 3.9k ohm j r312 rd-az152...

  • Page 56

    55 electrical partslist loc parts_code parts_name parts_descr rp07 85801060ta wire copper 0.6x52mm taping u001 97p65476ma pcb main 330x246x1.6t z0014 pvmpjve596 pcb main jump only as df-q74d2d-ba(476ma) jp002 85801065gy wire copper awg22 1/0.65 tin coating jp003 85801065gy wire copper awg22 1/0.65 t...

  • Page 57

    Loc parts_code parts_name parts_descr jp145 85801065gy wire copper awg22 1/0.65 tin coating jp146 85801065gy wire copper awg22 1/0.65 tin coating jp147 85801065gy wire copper awg22 1/0.65 tin coating jp148 85801065gy wire copper awg22 1/0.65 tin coating jp149 85801065gy wire copper awg22 1/0.65 tin ...

  • Page 58

    57 loc parts_code parts_name parts_descr cc19 hcfh104zba c chip cera 25v y5v 0.1mf z 1608 cc20 hcfh104zba c chip cera 25v y5v 0.1mf z 1608 cc21 hcfh104zba c chip cera 25v y5v 0.1mf z 1608 cc22 hcfh104zba c chip cera 25v y5v 0.1mf z 1608 cc26 hcfh104zba c chip cera 25v y5v 0.1mf z 1608 cc27 hcfh104zb...

  • Page 59

    58 loc parts_code parts_name parts_descr cm58 hcbk102kba c chip cera 50v x7r 1000pf k 1608 cm59 hcfh104zba c chip cera 25v y5v 0.1mf z 1608 cm60 hcfh104zba c chip cera 25v y5v 0.1mf z 1608 cm61 hcbk103kba c chip cera 50v x7r 0.01mf k 1608 cm62 hcbk102kba c chip cera 50v x7r 1000pf k 1608 cn02 hcfh10...

  • Page 60

    59 electrical partslist loc parts_code parts_name parts_descr icf01 11818e -q ic chip dual optical control mt1818e lqfp 216 pin tray icf02 1ads4616aq 16m(1x16) sdram ads4616a4a-6 16m 166mhz 50pin tsop tray icf04 1mx26lv80q ic chip flash rom mx26lv800ttc-55 48pin tsop tray icf06 11816e -q ic chip dvd...

  • Page 61

    60 electrical partslist loc parts_code parts_name parts_descr rf47 hrfs000-ba r chip 1/16 0 ohm 1608 rf48 hrfs000-ba r chip 1/16 0 ohm 1608 rf49 hrfs000-ba r chip 1/16 0 ohm 1608 rf50 hrfs101jba r chip 1/16 100 ohm j 1608 rf51 hrfs101jba r chip 1/16 100 ohm j 1608 rf52 hrft109jca r chip 1/10 1 ohm j...

  • Page 62

    61 electrical partslist loc parts_code parts_name parts_descr cn28 cexf1c100a c electro 16v rsm 10mf 5x7 cn29 cexf1c100a c electro 16v rsm 10mf 5x7 cn33 cexf1c331v c electro 16v rss 330mf (8x11.5) tp cn56 cexf1c100a c electro 16v rsm 10mf 5x7 cs45 cexf1c470a c electro 16v rsm 47mf (5x7) tp cs64 cexf...