Service Manuals, User Guides, Schematic Diagrams or docs for : Akai DV DV-R4025VSS DV-R4025VSS
<< Back | HomeMost service manuals and schematics are PDF files, so You will need Adobre Acrobat Reader to view : Acrobat Download Some of the files are DjVu format. Readers and resources available here : DjVu Resources
For the compressed files, most common are zip and rar. Please, extract files with Your favorite compression software ( WinZip, WinRAR ... ) before viewing. If a document has multiple parts, You should download all, before extracting.
Good luck. Repair on Your own risk. Make sure You know what You are doing.
Image preview - the first page of the document
>> Download DV-R4025VSS documenatation <<
Text preview - extract from the document
DVD HOME THEATER SYSTEM
Model:
DVR4025VSS
SERVICE MANUAL
www.akai.ru
1.CONTENTS
Title Page
1. CONTENTS 1
2. BLOCK DIAGRAM (CABLE CONNECTIONS) 2
3. POWER SUPPLY 3
4. FUNCTIONAL DESCRITPIONS 4
4.1 DVD MPEG board 4
4.2 Front Panel 10
4.3 SMPS 10
4.4 DVD Driver 12
5. DESCRIPTION OF THE INTEGRATED CIRCUITS 13
5.1 SWPS TRANSFORMER 13
5.2 FRONT PANEL DRIVER IC FRO VIR (PT6311) 14
5.3 SWPS CONTROLLER IC (5M02659) 18
5.4 SWPS PROGAMMABLE SHUNT RE
GULATOR (FAIRCHILD TL 431) 22
5.5 LINE FILTER(2 x 6.8mH) 23
1
1
DVD Service Manual
2 BLOCK DIAGRAM(CABLE CONNECTIONS)
1
2
DVD Service Manual
31
DVD Service Manual
4.FUNCTIONAL DESCRIPTIONS
4.1DVD MPEG board
SEIAL AM/FM
EPROM TUNER
L/R
AUD0
4053 KARAOKE
16M DOUT CENTRE/SUBWOOF
FLADH DAC
MT1379DE AUD2 SURROUND L/R
WMA8722
64M AUD1 FRONT L/R
SDRAM
CVBS
R
G
B
MT1336E
41
A B C D E
CN1 L1Ferrite Bead DV33 +PS5V +5
V RVCCIN DV33
Power Supply 1206 L4Ferrite Bead R141 L32
1206 000 FB 0805
5
4
3 NOT STUFF
2 + C6 CB11 + C151 CB8 C9 +
1
220u 0.1u 220u 0.1u 220u RFVCC L33
R143 FB 0805
000 NOT STUFF
4 4
1
U1
G
1117-3.3
2 3 SOT-2
3
2
OUT IN NOT Stuffed TRCLOSE
L3Ferrite Bead TROPEN
TROPEN
1206 LIMIT
STBY
AVCC
IOA
D7 D6 R145 R146
1N4001 1N4001
NOT Stuffed NOT Stuffed R150 10K 10K
PWMOUT2
PWMOUT2
10K CB76 TROUT
RVCCIN AVCC 0.1u TRIN
SCLK
SCLK
SDEN R149 CB74
SDEN
SDATA
SDATA
C146 + CB77 C136 + R159 R160 + C140 URST 10K 0.1u
URST
RVCCIN RFVCC
220u 0.1u 47u 22Ohm 22Ohm 47u
Q26 Q27
2SB1132 2SB1132 + C148 CB94 U2
64
63
62
61
60
59
58
57
56
55
54
53
52
51
50
49
48
47
46
45
44
43
42
41
40
39
LDO1
47u 0.1u R153
9
8
7
6
5
4
3
2
1
0
IO
IO
IO
IO
IO
IO
IO
IO
IO
IO
B
A
IO
IO
RST
GND
0Ohm
SCLK
SDEN
VDDS
LDO2
GNDS
SDATA
AVDDP
AGNDX
AGNDP
XCK16M
65 38
E
E
HDGAT
UDGAT
AGNDF VFO13
E
DPDMUT
66 VCON VDD 37
CB97 67 36 LRFRP
AVDDF AGNDX R156 RES
68 AGNDX AGNDX 35
D4 CB1 L35 L36 CB2 D5 0.1u 69 34 C129 27p SW1
OPO AVDDM AGNDX
70 COSPHI DPFO 33
1N4148 0.1u 10uH 10uH 0.1u 1N4148 OP- 71 32 R157 27K
HALLCOS DPFN
3 1 OP+ 72 31 3
GND-LD REFCOS GNDP HTRC
LD-DVD 2 73 AGNDM HTRC 30 HTRC
3 74 29 C130 15n
NC HALLSIN TRLP C131 10p
HFM 4 75 REFSIN TRLPA 28
5 MDI 76 27 R158 100K
MD SINPHI CRTPLP
LD-CD 6 77 SW0 CRTP 26
7 78 25 RFRP C132 390p
VR-DVD SW1 SW2 HRFRP
VR-CD 8 79 SW1 LRFRP 24
9 80 23 BDO C133 390p
NC MOP DEFECT BDO C135
10 L34 1206
FB E 81 22 C134
E MON VDDP RFRP
11 82 21 TEO
VCC AGNDX TEO TEO 33n
12 V20 83 20 CSO 470p
VC V20 AGNDX CSO CSO V2P8 V1P4
13 CB82 84 19 RFL
GND-PD CEON LVL RFL
14 F 0.1u 85 18 FEO
F CEOP FEO FEO
15 B + C128 R148 + C138 86
MT1336E 17 V20
B A CB83 RFGCI V20 V1P4
A 16 10u 87 RFGCU VREFO 16
17 RFO 100u 10K 0.1u 88 15 V2P8
RF IOA RFFGC V2REFO
CD/DVD 18 89 OSP AVDDT 14
19 D 90 13 + C18 CB29 CB88 + C16 CB85
D C IOA C139 CB84 OSN TM4
C 20 91 CDD AGNDT 12
21 0.1u 92 11 10u 0.1u 0.1u 10u 0.1u
T- 120p CDC TM3
T+ 22 93 CDB TM2 10
F+ 23 94 CDA TM1 9
24 R152 R147 R151 95 8
F- RFO C141
RES DVDRFIN AGNDO
96 7 RFON
DVDRFIP RFON RFON
100K 100K 10K D C142
1u 97 6 RFOP
DVDD RFOP RFOP
CON1 CB90 CB80 CB107 A C143
1u 98 5
SF-HD60AV/0.5mm,24Pin B 1u
C144 DVDC AVDDO RVCCIN
99 DVDB AGNDX 4
0.1u 0.1u 0.1u C C145
1u 100 3
Q25 Q24 Q23 DVDA AGNDX
101 MA WVDD 2
2SK3018 2SK3018 2N3904 102 1
MB WOBSO
CC142, C145
C144,
143, CB86 CB89 CB109
OP
ON
I
O
1
O
2
MC
MD
SA
SB
AGND
IR
AVDD
SC
SD
CDF
CDF
SVDD
TPI
TN
SGND
WG
AGC1
W
AGC2
AGC3
2
MDI
1
MDI
LD
LD
RFSUBO
WG
D
N
◦ Jabse Service Manual Search 2024 ◦ Jabse Pravopis ◦ onTap.bg ◦ Other service manual resources online : Fixya ◦ eServiceinfo