Daewoo DPC-7301N User manual

REV. 0
(7.0-Inch) LCD Color Monitor &
DVD Player
MODEL : DPC-7301N LMD-6708RW）
2006/Aug.

-2-
CONTENTS
----------------
Specification....................................................... ............................................... ...
3~4
Block Diagram................................... ................................................................ ... 5~6
General Alignment Instruction....................................................................... ...... 7
Troubleshooting........................................................................................... ... ... .. 8~9
Printed Circuit Board........................................................................................ ... ... 10~17
IC Block Diagram & Description........................................................................ .. .. 18~33
Explode View........................................................................................................ ...... . 34
Schematic Diagram......................................................................................... ..... .. 35~43

-3-
SPECIFICATION
LCD MONITOR
Description Condition Unit Limit Nominal
Headphone Output 1kHz 0dB mW 3±23
Headphone Noise No Signal mV <1mV <1mV
L1kHz 0dB mW 600±100 600
SPK MAX Output(DVD) R1kHz 0dB mW 600±100 600
L1kHz 0dB mW 600±100 600
SPK MAX Output(AV IN) R1kHz 0dB mW 600±100 600
REF THD 1kHz 0dB %31
Headphone S/N Infinity zere/-dB/L&R dB ≥50 ≥50
Luminance(MAX) White Signal LUX 300±50 300
Luminance(8step) White Signal LUX 250±50 250
Luminance(MIN) White Signal LUX 100±50 100
20Hz dB ±30
125Hz dB ±30
10kHz dB ±30
L
20kHz dB ±30
20Hz dB ±30
125Hz dB ±30
10kHz dB ±30
Headphone RESP
R
20kHz dB ±30

-4-
DVD
Description Condition Unit Limit Nominal
Video Signal Level Vp-p 0.7±0.1 0.7
SYNC Level Vp-p 0.3±0.1 0.3
Video out level
75% color bar/75ohm
Vp-p 1.0±0.2 1
Video out level(Unload) 75% color bar Vp-p 2.0±0.2 2
CD 1kHz/0dB/10K V0.6±0.2 0.7
Audio out level DVD 1kHz/0dB/10K V2+0/-0.6 1.4
20Hz dB ≤±30
125Hz dB ≤±30
10kHz dB ≤±30
FREQ RESP (DVD)
(20Hz~20kHz)
20kHz dB ≤±30
Signal-to-noise radio Infinity zere/-dB/L&R dB ≥60 ≥60
Audio distortion & noise (DVD) 1kHz/0dB/L&R dB ≤-65 -65
Dynamic range (DVD) 1kHz/-60dB dB ≥85 ≥85
R/L Cross sound (DVD) 1kHz/0dB/L&R dB ≥45 ≥45
1kHz Channel unbalance 1kHz/0dB/L&R dB ≤30
Power Consumption Standby W ≤1 ≤1
DC 9V Rating W ≤12 ≤12
Power Standby (Battery Current) Standby uA ≤10 ≤10
ECC Entircity A BEX TDV-552 um ≥100 100
Scratch A BEX TDV-541 mm ≥1.6 1.6
Black dot A BEX TDV-545 mm ≥ф0.8 0.8
Finger Print A BEX TDV-545 um ≥ф65 65
Vertical deviation A BEX TDV-533 mm ≥0.6 0.6
Note: Nominal specs represent the design specs. All units should be able to approximate these. Some will
exceed and some may drop slightly below these specs. Limit specs represent the absolute worst condition that
might still be considered acceptable. In no case should a unit fail to meet limit specs.

-5-
BLOCK DIAGRAM
LCD

-6-
DVD

-7-
GENERALALIGNMENT INSTRUCTION
The Main PCB of Monitor Modification:
1. Input voltage is 6.8V-16V, input signal is test circuit BY 5418.
2. Adjust VR1 to get test point: 15720Hz..
3. Adjust VR1 to get horizontal phase shift.
4. Adjust VRB4 to get good performance.
The main PCB of DVD Modification:
1. Adjust the brightness to the brightest by VR, adjust video pattern’s color to white, test the screen
Brightness is 200±102 LUX.
With luminometer You can adjust R69 to get this standard.

-8-
TROUBLESHOOTING
LCD
SYMPTOM CAUSE REMEDY
LCD MONITOR PART
1) Picture distortion &Defective capacitor (C202)
&Replace capacitor (C202).
2) No Picture &Defective IC (D3031).
&Replace IC (D3031).
3) No Picture, Picture no
Good
&Defective IC (CSC 3414A). &Replace IC (CSC 3414A).
4) Color is no good &Defective X201.
&Replace X201.
5) SYNC no good &Defective IC CSC1004D. &Replace IC CSC1004D.
6) NO Picture
&Defective IC SS6608. &Replace SS6608.
7) Picture no good
&Defective CON4. &Replace CON4.
8) Brightness no good
&Defective IC SS9969. &Replace IC SS9969.
9) No Back Light
&Defective IC MP1029EM. &Replace IC MP1029EM.

-9-
DVD
SYMPTOM CAUSE REMEDY
DVD PART
1) No Power &Power source is not correct.
The positive and negative does not
match the unit.
&Power button defective.
&Defective triode U1(S-8521F33).
&Replace power source.
&Change the position of
positive and negative.
&Replace power button.
&Replace U1(S-8521F33).
2) No Picture &Defective T3 (24C02N).
&Defective T4 (S29AL0080).
&Defective U2 MTK1389DE.
&Replace T3 (24C02N).
&Replace T4 (S29AL0080).
&Replace U2 MTK1389DE.
3) No Sound &Defective U8 (4558D).
&Defective U6 (TDA2822).
&Replace U8 (4558D).
&Replace U6 (TDA2822)..
4) Sound no good &Defective U8 (4558D).
&Replace U8 (4558D).
5) Can not read DISC &Defective U3 (AT5654).
&PICK-up Laser is defective.
&Replace U3 (AT5654).
&Replace pick up.
6) No key function &Defective U2 IC MTK1389DE. &Replace U2 IC MT1389DE
7) No remote control function &Defective REMOTE.
&Key is Defective.
&Replace REMOTE.
&
Replace keys.

-18-
IC BLOCK DIAGRAM & DESCRIPTION
IC201 D3031
BLOCK DIAGRAM
VREF INV INV INV
BRIGHT BRIGHT BRIGHT
à à Ã
S/H S/H S/H
S/H
S/H
INT/EXTSW
MATRIX
DEMOD
R-Y
G-Y B-Y
IDENT
F/F
PAL.SW
PHASE
SHIFT
TINT
VCO
APC
ACC.DET
ACC
REG1 REG2 REG3
TRAP
COLOR
COMP
Y/C CLAMP
AGCAMP AGCDET
PICTURE
SW SYNCSEP
BGPGEN
BGP
N
Y/C
N
P
N
fromSYNCIN
IDENTFIL
TINT
VCO OUT
VCO IN
APC.FH
ACC.FIL
CIN
Y/C
COMP
FADJ
VIDEO IN BLK
FRP
S/H PULSEG S/H PULSEG S/H PULSEG
33 35 34
9
42
30
31 27 28 32 26 29
23 2421 2219 203637384846474561
2
3
41
5
15 14 16 13
4
1718 43 25 8 12 7
SW 394041
EXT RIN
EXT GIN
EXT BIN
PN VCC1
HPF
KIL.LER
B DC DET
B OUT
G DCDE T
G OUT
R DC DET
R OUT
SYNC.IN
SYNC
OUT
SYNC
SEP
PICTUREAGC
FILTER
AGC
OUT
CLAMP
COLOR
TRAPH FIL OUT
COMP
H.FILTER
VCC1
VCC1
GNDVIE V
CC2 KILLE R FIL
P
P
10
BRIGHT
BRIGHTSUB B
SUB BRIGHT R RGB AMPLITUDE
γ1 γ2
CONTRAST PEAK LIMIT
γ

-19-
IC201 D3031
37
38
39
40
41
42
43
44
45
46
47
48
SYNCOUT
SYNCSEP
EXTB IN
EXTG IN
EXTR IN
CONTRAST
Vcc1
FADJ
CLAMP
AGCFILTER
AGCOUT
PICTURE
12 3 4 56 7 8910 1112
TRAP
H FILTER OUT
VIDEO IN
IDENT FILTER
C IN
COLOR
SW
KILLER FILTER
PEAK LIMITTER
RGBAMPLITUDE
ACC FILTER
R-Y/B-Y PHASE
13
14
15
16
17
18
19
20
21
22
23
24
B OUT
B DC DET
GOUT
GDC DET
ROUT
RDC DFT
V EE
GND
VC0OUT
APCFILTER
Vc0 IN
TINT
252627282930313233343536
SYNC IN S/H PULSE B S/H PULSE G S/H PULSE R BRIGHT GAMMA2 GAMMA1 FRP SUB BRIGHT B SUB BRIGHT R BLK Vcc2
Pin
Name Pin Name Pin Name Pin Name
1. TRAP 13. TINT 25. VCC 2 37. SYNC OUT
2. H FILTER OUT 14. VCO IN 26. BLK 38. SYNC SEP
3. VIDEO IN 15. APC FILTER 27. SUB BRIGHT R 39. EXT B IN
4. IDENT FILTER 16. VCO OUT 28. SUB BRIGHT B 40. EXT G IN
5. C IN 17. GND 29. FRP 41. EXT R IN
6. COLOR 18. VER 30. GAMMA1 42. CONTRAST
7. SW 19. R DC DET 31. GAMMA2 43. VCC1
8. KILLER FILTER 20. R OUT 32. BRIGHT 44. F ADJ
9. PEAK LIMITTER 21. G DC DET 33. S/H PULSE R 45. CLAMP
10. RGB AMPLITUDE 22. G OUT 34. S/H PULSE G 46. AGC FILTER
11. ACC FILTER 23. B DC DET 35. S/H PULSE B 47. AGC OUT
12. R-Y/B-Y PHASE 24. B OUT 36. SYNC IN 48. PICTURE

-20-
IC BLOCK DIAGRAM & DESCRIPTION
ICP1 SS6608

-21-
IC BLOCK DIAGRAM & DESCRIPTION
IC101 CSC-1004D
49
1IVSYNC
505152535455565758596061
62
6463
2
3
4
5
6
7
8
9
10
11
12
13 36
37
38
39
40
41
42
43
44
45
46
47
48
14 35
15 34
16 33
19
181722232420212829252627303132
csc-1004
IVIY
IFRST
ICSY
ICOMPS
ICLKC
IOMCLK
OPSI
OPSC
OPOLS
OPOLC
OBLK
ONPO
IOHSY
IOVSY
HVDD
IMODE1
ITST1
IZ_SEL
IRES 1
VSS
OOE3
OOE2
OOE1
OSTV2
OSTV1
OCPV
HVDD
IOSCI
OOSCO
VSS
OPDA
OSRST
IMODE2 IMODE3 IVPOS1 INPOS2 IAREA_SEL IIMODE ICPO_SEL ICPH_SEL IIMODE ICPO_SEL ICPH_SEL IODD_SEL LVDD IRES3 IRES2
VSS ICPI IQ2H_SEL IOEH_SEL ILNR IUND INNP OCPH1 OCPH2 OCPH3 OSTH1 OSTH2 OQ2H LVDD OOEH OCPO
CSC-1004
Pin No. Pin name I/O Remarks Pin No. Pin name I/O Remarks
1ivsync Ischimtt 33 ires1 Ipull_down
2iviy Ischimtt 34 iz_sel Ipull_down
3first Ischimtt 35 itst1 IAC/DC test
4icsy Ischimtt 36 ooe3 O3mA
5icomps Ipull_up 37 ooe2 O3mA
6iclkc Ipull_up 38 ooe1 O3mA
7iomclk I/O Bi dir.(3mA) 39 vss
8opsi O3mA 40 ostv2 O3_state(3mA)
9opsc O1mA 41 pstv1 O3_state(3mA)
10 opols O3mA 42 ocpv O3mA
11 opolc O3mA 43 HVDD 5.0V
12 oblk O1mA 44 iosci Ixin (25mhz)

-22-
IC BLOCK DIAGRAM & DESCRIPTION
IC101 CSC-1004
13 onpo O1mA 45 oosco Oxout(25mhz)
14 iohsy I/O Bi dir.(3mA) 46 vss
15 iovsy I/O Bi dir(3mA). 47 opda O3_state(3mA)
16 HVDD 5.0V 48 osrst O1mA
17 imode1 Ipull_down 49 ocph1 O6mA
18 imode2 Ipull_down 50 ocph2 O6mA
19 imode3 Ipull_down 51 pcph3 O6mA
20 ivpos1 Ipull_down 52 osth1 O3_state(3mA)
21 ivpos2 Ipull_down 53 osth2 O3_state(3mA)
22 VSS 54 oq2h O3mA
23 ihpos1 Ipull_up 55 LVDD 3.3V
24 ihpos2 Ipull_up 56 ooeh O3mA
25 iarea_sel Ipull_up 57 ocpo O3mA
26 iimode Ipull_up 58 VSS
27 icpo_sel Ipull_up 59 icpi I
28 icpo_sel Ipull_up 60 iq2h_sel Ipull_up
29 iodd_sel Ipull_up 61 ioeh_sel Ipull_up
30 LVDD 3.3V 62 ilnr Ipull_up
31 ires3 Ipull_down 63 iund Ipull_up
32 ires2 Ipull_down 64 innp Ipull_up

-23-
IC BLOCK DIAGRAM & DESCRIPTION
Q10 SS9969

-24-
IC BLOCK DIAGRAM & DESCRIPTION
IC1 CSC3414A
Pin Name Pin Name
1. A OUTPUT 5. B +INPUT
2. A –INPUT 6. B –INPUT
3. A +INPUT 7. B OUTPUT
4. GND 8. V+

-25-
IC BLOCK DIAGRAM & DESCRIPTION
ICH1 MP1029EM
Pin Name Pin Name Pin Name Pin Name
1. AB 6. DR 11. BSTR 16. COMP
2. IL 7. IN 12. PGND 17. FT
3. BOS 8. OUTL 13. OUTR 18. OL
4. DB 9. PGND 14. IN 19. FB
5. EN 10. BSTL 15. REF 20. AGND

-26-
IC BLOCK DIAGRAM & DESCRIPTION
DVD U6 TDA2822
CONTROL
lQ
LREE
D3
Q6
Q1
Q5
D4
OUT
8
6
GND
5,8,12,13 3-
D1
D2
Q4
Q2
Q3
Q7
D5
Q4
R2
C1
R1
Q9 Q10
Q11
INPUT
Q12Q13
R3
INPUT
D6 D7
Q17
R6
Q18
Q19
Q24
D11
D10
Q20
C2
R5
Q16
Q15
Q14
D8
Q21 Q23
D5
Q22
OUT
T1
+
1 16 +14 -
1G
+ Vs
INPUT+(1) 1
TDA2822
2
3
4
8
7
6
5
9
10
11
12
13
14
15
16
N.C.
INPUT- (1)
GND
GND
OUTPUT(1)
N.C.
+VS N.C.
N.C.
OUTPUT(2)
GND
GND
INPUT-(2)
N.C.
INPUT+(2)
Pin Name Pin Name
1. INPUT +(1) 9. N.C.
2. N.C. 10. N.C.
3. INPUT -(1) 11. OUTPUT (2)
4. GND 12. GND
5. GND 13. GND
6. OUTPUT (1) 14. INPUT - (2)
7. N.C. 15. N.C.
8. +V516. INPUT + (2)

-27-
IC BLOCK DIAGRAM & DESCRIPTION
DVD U3 AT5654H
OET2
OET1
+
+THERMAL
SHUT DOWN -BY
STAND
SLED
+
12
13
14
10
11
6
7
5
4
3
2
1
8
9
19
15
17
16
18
21
20
23
22
24
26
25
28
27
DRIVER
ACTUATOR
DRIVER ACTUATOR
DRIVER
DRIVER
LOADING
Vcc PV cc2 PV cc1
X2
X2
DET AMP.
DET AMP.
VINFC
CFCerr1
CFCerr2
V
VOSL
VNFFC
Vcc
PV
PGND
VOSL-
VOSL+
VOFC-
VOFC+ VOTK+
VOTK-
VOLD+
VOLD-
PGND
VNFTK
PV
BIAS
GND
VLD
CTKerr2
CTKerr1
VTK
STBY
SL+
IN
SL-VIN
IN
IN
CC2
10K 20K
7.5K
7.5K
7.5K
10K
15K
Pre GND
PGND
PVCC2
25K
10K
PGND
Vcc
CC1
CC1
PV
7.5K
20K 10K
4
3
21
25
26
27
28
10
789
56
AT5654
212224 23 20 19
1312
11 14
18 17 1615
Pin Name Pin Name Pin Name Pin Name
1. VINFC 8. V CC 15. VOTK + 22. GND
2. CFCerr1 9. PV cc1 16. VOTK - 23. VINTK
3. CFCerr2 10. PGND 17. VOLD + 24. CTKerr2
4. VINSL + 11. VOSL - 18. VOLD - 25. CTKerr1
5. VINSL - 12. VOSL + 19. PGND 26. VINTK
6. VOSL 13. COFC - 20. VNFTK 27. BIAS
7. VNFFC 14. VOFC + 21. PV CC2 28. MUTE

-28-
IC BLOCK DIAGRAM & DESCRIPTION
T2 M12L64164A