Grundig DVD-P 7850 User manual

DVD Service Manual
Zusätzlich erforderliche Unterlagen für den Komplettservice
Additionally required Service Documents for the Complete Service
Service
Manual
Sicherheit
Safety
Materialnr./Part No.
720108000001
DVD-P 7850
GMM5400
NUR FÜR INTERNEN GEBRAUCH
FOR INTERNAL USE ONLY
Materialnummer / Part Number 720105418000
Änderungen vorbehalten / Subject to alteration
TCC 0109 MP • Prepared in Germany
http://www.grundig.com

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Table of Contents
Page
General Section .................................. 1-2…1-10
General Notes ...............................................................................1-2
Technical Data...............................................................................1-4
Operating Hints..............................................................................1-8
Layout of the PCBs
and Circuit Diagrams ......................... 2-1…2-15
Block Circuit Diagram ....................................................................2-1
Power Supply.................................................................................2-1
Main Board ....................................................................................2-3
– Voltage Supply ..........................................................................2-5
– Processor...................................................................................2-6
– DVD Drive..................................................................................2-8
– Analogue....................................................................................2-9
– IN/OUT.....................................................................................2-11
Keyboard / USB / Card Reader ...................................................2-12
Display Board ..............................................................................2-14
Exploded View
and Spare Parts List...................................... 3-1
Inhaltsverzeichnis
Seite
Allgemeiner Teil .................................. 1-2…1-10
Allgemeine Hinweise .....................................................................1-2
Technische Daten..........................................................................1-4
Bedienhinweise .............................................................................1-5
Platinenabbildungen
und Schaltpläne.................................. 2-1…2-15
Blockschaltplan..............................................................................2-1
Netzteil...........................................................................................2-1
Hauptplatte ....................................................................................2-3
– Spannungsversorgung ..............................................................2-5
– Prozessor...................................................................................2-6
– DVD-Laufwerk............................................................................2-8
– Analog........................................................................................2-9
– IN/OUT.....................................................................................2-11
Keyboard / USB / Card Reader ...................................................2-12
Display-Platte ..............................................................................2-14
Explosionszeichnung
und Ersatzteilliste.......................................... 3-1
Es gelten die Vorschriften und Sicherheitshinweise
gemäß dem Service Manual "Sicherheit", Material-
nummer720108000001,sowiezusätzlichdieeventuell
abweichenden, landesspezifischen Vorschriften!
Theregulations and safety instructions shall bevalid
as provided by the "Safety" Service Manual, part
number 720108000001, as well as the respective
national deviations.
General Section
General Notes
Before opening the cabinet disconnect the mains plug!
Attention: Observe the ESD safety regulations
Wiring
Before disconnecting any leads and especially the earth connecting
leads observe the way they are routed to the individual assemblies.
On completion of the repairs the leads must be laid out as originally
fitted at the factory to avoid later failures or disturbances.
Carrying out Measurements
Whenmakingmeasurementsonsemi-conductorswithanoscilloscope,
ensure that the test probe is set to 10:1 dividing factor. If the previous
measurement was made on AC input, please note that the coupling
capacitor in the oscilloscope will be charged. Discharge via the item
being checked can damage the components.
Measured Values
The measured values given in the circuit diagrams are approxi-
mates!
Allgemeiner Teil
Allgemeine Hinweise
Vor dem Öffnen des Gehäuses den Netzstecker ziehen!
Achtung: ESD-Vorschriften beachten
Leitungsverlegung
Bevor Sie die Leitungen und insbesondere die Masseleitungen lösen,
muss die Leitungsverlegung zu den einzelnen Baugruppen beachtet
werden.
Nach erfolgter Reparatur ist es notwendig, die Leitungsführung wieder
in den werkseitigen Zustand zu versetzen um evtl. spätere Ausfälle
oder Störungen zu vermeiden.
Durchführen von Messungen
Bei Messungen mit dem Oszilloskop an Halbleitern sollten Sie nur
Tastköpfe mit 10:1 -Teiler verwenden.Außerdem ist zu beachten, dass
nach vorheriger Messung mit AC-Kopplung der Koppelkondensator
des Oszilloskops aufgeladen sein kann.Durch die Entladung über das
Messobjekt können Bauteile beschädigt werden.
Messwerte
Bei den in den Schaltplänen angegebenen Messwerten handelt es
sich um Näherungswerte!

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Technische Daten
Disk-Format: ................ DVD, DVD+RW, DVD-RW, DVD+R, DVD-R,
Audio-CD (CD-DA)
CD-R / CD-RW (MP3, JPEG- / Picture-CD, VCD, S-VCD,
Audio/Video "MPEG4")
LCD-Display:................................... 7” (16 : 9) Activ-Matrix LED Typ
Auflösung................................................................ 480 (H) x 234 (V)
Leuchtdichte ..................................................................ca. 150cd/m2
Displayträgheit...................................................ca. Tr 12ms, Tf 18ms
Blickwinkel .......................................................ca. 120° (H) / 100° (V)
Bildformat .............................................................................4:3, 16:9
Laser:........................................................................Halbleiter-Laser
– Wellenlänge für DVD............................................................650nm
– Wellenlänge für CD..............................................................780nm
Video:
Format ...............................MPEG-2 (ISO / IEC – 13818), MPEG – 1
TV-Norm ..........................................................................PAL / NTSC
– PAL ......................................................................50Hz, 625 Zeilen
– NTSC...................................................................60Hz, 525 Zeilen
Audio:: ..................................................................................... Stereo
Frequenzgang ...............................DVD: 48kHz Sampling: 4…22kHz
DVD: 96kHz Sampling: 4…44kHz
CD: 4…20kHz
Signal-Rauschabstand (bei 1kHz)........................................ca. 65dB
Dynamik (bei 1kHz) ..............................................................ca. 85dB
Gleichlauf...............................................................................≤0,01%
Anschlüsse:
Headphone ............................................................................ 2 x 32≤
Video (CVBS out/in) ................................1,0 Vss / 75≤, Sync negativ
Audio out/in .................................................................. 1,0Vss / 10k≤
USB ..................................................................................USB in 1.1
CARD reader .................................................................... SD / MMC
Power Adaptor:
Netzspannung ...............AC 100…240VAC ±10% (50/60Hz) Adapter
Nennleistungsaufnahme..........................................9,6W (12V, 0,8A)
Akku:.......................................................................... 7,4V 1850mAh
Abmessungen L x H x B ..................................... 208 x 154 x 46mm
Gewicht: ............................................................... 800g (ohne Akku)
Technical Data
Disc Format:................. DVD, DVD+RW, DVD-RW, DVD+R, DVD-R,
Audio-CD (CD-DA)
CD-R / CD-RW (MP3, JPEG- / Picture-CD, VCD, S-VCD,
Audio/Video "MPEG4")
LCD Display: ................................ 7” (16 : 9) active-matrix LED type
Resolution............................................................... 480 (H) x 234 (V)
Brightness .....................................................................ca. 150cd/m2
Response time...................................................ca. Tr 12ms, Tf 18ms
Viewing angle ..................................................ca. 120° (H) / 100° (V)
Picture format .......................................................................4:3, 16:9
Laser:................................................................ Semiconductor laser
– Wavelength for DVD.............................................................650nm
– Wavelength for CD...............................................................780nm
Video:
Format ...............................MPEG-2 (ISO / IEC – 13818), MPEG – 1
TV Norm ..........................................................................PAL / NTSC
– PAL ........................................................................ 50Hz, 625 lines
– NTSC.....................................................................60Hz, 525 lines
Audio: ..................................................................................... Stereo
Frequency Response ....................DVD: 48kHz Sampling: 4…22kHz
DVD: 96kHz Sampling: 4…44kHz
CD: 4…20kHz
S/N ratio (at 1kHz)................................................................ca. 65dB
Dynamic Range (at 1kHz) ....................................................ca. 85dB
Distortion ...............................................................................≤0.01%
Terminal:
Headphone ............................................................................ 2 x 32≤
Video (CVBS out/in) ............................. 1.0 Vpp / 75≤, Sync negative
Audio out/in ..................................................................1.0Vpp / 10k≤
USB ..................................................................................USB in 1.1
CARD reader .................................................................... SD / MMC
Power Adaptor:
Line Voltage ...................AC 100…240VAC ±10% (50/60Hz) Adapter
Power Consumption ................................................9.6W (12V, 0.8A)
Rechargeable battery:.............................................. 7.4V 1850mAh
Dimension L x H x W........................................... 208 x 154 x 46mm
Weight: .................................................................800g (w/o battery)

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Bedienhinweise Dieses Kapitel enthält Auszüge aus der Bedienungsanleitung.
Weitergehende Informationen entnehmen Sie bitte der gerätespezifischen Bedienungsanleitung, deren Materialnummer Sie in der entsprechenden Ersatzteilliste finden.

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Operating Hints This chapter contains excerpts from the operating instructions.
For further particulars please refer to the appropriate user instructions the part number of which is indicated in the relevant spare parts list.

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Platinenabbildungen und Schaltpläne / Layout of PCBs and Circuit Diagrams
Blockschaltplan / Block Circuit Diagram
SDRAM
FLASH
IR_RECEIVER
BA5654FP
MOTOR
OP4558
LM4863
SPEAKER*2
EAR_PHONE*2
CCIR656
CVBS_IN
Laser
AVIN
4053
CVBS
CT901A
QA~QH
Keyboard
KS_DET0
74LS164
Audio
AVOUT
DisplayCT675C
USB/CARD
CT909R
128Pin
DVD-Drive
Netzteil/ Power Supply
Ansicht von der Bestückungsseite / View of Component Side
Ansicht von der Lötseite / View of Solder Side
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Netzteil / Power Supply
LED
POWER_ON_C
LED
Battery_in
Power_on_C
Panel_Sw in
Power_on
Panel_Sw in
Battery_o
Panel_Sw out
Panel_Sw out
PGND
Battery_i
Battery_o
VPP+12V
PGND
+12V
Battery_i
Battery_in
Battery_i
Power_on
+5V
PGND
PGND
Vpp
Power_on
R810
10M (0805)
R39 10K
R38
10K
R23
4.7M
C10
104
R825 FB120 (0805)
C804
100n
R840 10K
12
T4
11
R9
330K NC
J201
PowerJack
3
2
1
C6
4.7uF (1206)
Q4B AP4953M
C51
NC
+
EC803 2.2U/16V
C2
104
Q11
CHT9013
B
E C
T11 1
1
R826
0 (0805)
R4
1K NC
IC2
AZ431
2
1 3
GND
VI VO
D802
B320A/SMA
Q7
CHT9013
B
E C
R809 10K
12
Q5
CHT9013 NC
B
E C
R7
390K NC
Q4A AP4953M
9
8
7
6
5
3
2
1
4
10 11
12
13
14
15
16
17
18
19
20
P2.4
P2.3
P2.2
P2.1
P2.0
XOUT/P1.1
XIN/P1.0
VSS
RE/P1.2
P2.5 P2.6/AD8
P0.7/AD7
P0.6/AD6
P0.5/AD5
P0.4/AD4
P0.3/AD3
P0.2/AD2
P0.1/AD1
P0.0/AD0
VDD C11
104
R36 10K
R14
4.7M
T1
11
C4 2.2uF (1206)
J104
SW KEY-SPDT
R30
470
T9
11
Q3A
AP9926 NC
L2 40-68uH
1 2
R896 0/0805
J3
SW KEY-SPST
1
2
3
R31 Thermistor 10K NC
C8
4.7uF (1206)
C15 103R51
100
R15
47K
R841
10K
12
R37 4.7K
C805
33P
C12
103
T8
11
D803
RLS4148
AK
C7
220-330uF/16V
D3 0 (1206)
P8 1
1
Q3B
AP9926 NC
36
5
4
R34
15K
R32 20K
R11
220K
C17
0.47uF
T7
1
1
R24
10K
C20
0.1uF DIP
IC3
S-8241 NC
1
2
3
4 5
VM
VDD
VSS
DO CO
R12
1K
R52 0
R5 3.3K
J1
SW KEY-SPST
1
2
3
F1
P125TS
1 2
-
+
IC4A LM358
3
1
2
84
5 6
T10 1
1
R839
4.7K
12
C14
47-100uF/16V
D804
B320A/SMA
C201
0.1uF
T12
11
C1
104 R13
NC
R8
470
C5
104 NC
P19 1
1
P18
11
R33
470 (1206)
T5
11
R29
15K
R842 10K
12
J605
SW KEY-SPST
1
2
3
C50
1000uF/35V
R6 470 (0805)
R21
1K (1206)
R20
10K
BT2
BATTERY
D2
MBRS240 (1206)
2 1
R40
3.3K
Q806
BC858B
B
EC
P7 1
1
R1
0.1
D203
NC
1 2
T2
11
R22
47K
C18
0.47uF
Q8
2N3906
B
EC
Q2
CHT9013
B
E C
R19
10
C3 2.2uF (1206)
T3
11
P6 1
1
1
2
3
45
6
7
8S1
G1
S2
G2D2-2
D2-1
D1-2
D1-1
R808
FB80 (1206)
T6
11
Q805
BC848
B
E C
R28
47K
R35 20K
J2
7P
6
5
4
3
2
1
7
R10
3.3K
R25
10K
R2
1.2K
R17 470 (0805)
C19
2.2uF (1206)
R3 470
C9 104
Q9
CHT9013
1
2 3
R850
0 (0805)
R18 18K 1%
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Hauptplatte / Main Board
Ansicht von der Bestückungsseite / View of Component Side
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Hauptplatte / Main Board
Ansicht von der Lötseite / View of Solder Side
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Hauptplatte – Spannungsversorgung / Main Board – Voltage Supply
1
05-146-00082
IC,DC-DC,CONVERTER,CP2894,SO8
1%
1%
1%
05-146-00082
IC,DC-DC,CONVERTER,CP2894,SO8
1%
+3.3V
DGND
+1.2V
DGND
+3.3V
GND
+5V
DGND
DGND GND
DGND
+3.3
DGND
VDD
VPP
VPP
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
PGND
VPP
PGND
PGND
PGND
PGND
+5V
+3.3
PGND
PGND
L4 FB300/0805
U19
CS2894
2
8
7
4 6
5
3
1
IN
N/C
EN
GND COMP
FB
SW
BS
C25
100n
+
EC36
10uF
16V
C197
100n
C210
10U
R1
0R(0805)
FB19 0R
EC6
10u/10V
C202
100n
C23
100n
C200
2.2n
C204
10n
R199
27K
L3 FB300/0805
EC8
10u/10V
C203
0.1U
C208
100n
C201
100P
R197
2.2K
C181
120P
R195
47K
R198
6.8K
C207
100n
D2
SMBJ15A
2 1
R210
0R(0805)
C198
10n
EC7
10u/10V
+
EC5
10u/10V
C16
100n
C196
1U
EC37
330u
16V
C212
100n
R196
6.8K
R2
0R(0805)
R184 0RFB11 0R
C27
100n
L1 22uH
1 2
C24
100n
L18
0R
1 2
L2 4.7uH
1 2
C205
10n
R211
100K
C211
1U
R26
220
C214
100P
J1
CON7/1.25
1
2
3
4
5
6
7
FB21 0R
C195
0.1U
C192
100P
R194
6.8K
U2
AP1117ELA-ADJ
1
23
GND
VOVI
C213
2.2n
C209
10n
C22
100n
EC3
220u/16V
FB10 0R
R169 NC
FB17 0R
EC38
330u
16V
R193
0R(0805)
FB9 0R
L19
0R
1 2
U18
CS2894
2
8
7
4 6
5
3
1
IN
N/C
EN
GND COMP
FB
SW
BS
R180 0R
FB22 0R
C26
100n
RS14 0R
D15
B230
2 1
+
EC39
10uF
16V
FB3 0R
D14
B230
2 1
FB18 0R
R27
0
C182
120P
R191
0R
R200
100K
C199
100n
C206
10U
charge_led
QE
KEYDET1
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Hauptplatte – Prozessor / Main Board – Processor
2
CRYSTAL
EMI
EMI
MDQM0
RF_SDEN
SF_CSN
IR_INT
MD2
MA3
OSC_I
PD4
GPB18MIRR
PD1
PD6
MA8
MBA0
SF_DIO
MD11
MD15
PD7
DSU1RX
SF_CLK
SF_DO
STRACK
MA0
SSLED
IO_MUTE
/WE
SSPDON
KS_DATA
TX2
SF_CSN
OSC_O
SMOTOR
IR_INT
MD[0..15]
RF_SDA
DSU1TX
RX2
SPK_MUTE
GPB8
MD0
AOUT_L
MD14
VCLK
GPB17
I2C_SCK
SFOCUS
SBAD
MNTR
MA11
MCLK
TEI
MD4
/RESET
MA7
MD5
MD9
SPDPWM
GPB0
LDON
I2C_SDA
PD0
MA1
KEYDET0
MD6
MA[0..11]
/SCS
PD2
AOUT_R
MD12
MA4
/CAS
MA9
PD5
KS_CLK
MA6
SF_DO
MBA1
CD_DVDSW
GPB6
MD3
MD7
MD8
PD3
FEI
MA5
RFO
/RAS
MA2
MD1
KEYDET1
MD10
MD13
MA10
AV_SW
CVBS1/Y/G
VREF165
SGND
DGND
+3.3V
GND
DGND
+3.3VV
+3.3V
DGND
SGND
+3.3V
DGND DGND
+3.3V+3.3V
DGND
DGND
DGND
SGND
DGND
+3.3VS
DGND
DGND
+3.3V
GND
VDD
DGND
DGND
+3.3VA
+1.2V
DGND
DGND
DGND DGND
DGND
VGND VGND
VGND
C183
NC
C37
100n
C44
27P
RS6
R192 NC
CS5 150P
C34
270P
RS13
0R
YM1
27MHz
C35
200P
CS8 68P
R344.7K
R182 FB300
C39
100n
R173 FB600
FB600
FB600
R28 100
CS6 68P
R47 430
RS7
C178
68P
C36
10n
FB20
0R
C170
33P
R334.7K
CS7 68P
R188 NC
RS1
R45 FB600
RS8
FB600
FB600
FB600
R37 27K
C33 100n
RS9 FB600
C30
100n
R178 FB300
U7
MX25L8005MC-15G
1
2
3
4
8
7
6
5
/CS
DO
/WP
VSS
VCC
/HOLD
CLK
DIO
C41
NC
C168 33P
U4 IR
1 2 3
DET GND VCC
R39 43K
CT909R
U5
CT219
1 2 3 4 5 6 8 9 19 20 10 12 13 15 16 17 18 33 26
47
30 31 32 37 34 11 14 35 36 38
39
40
41
49
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101
104
105
106
107
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
7 29
102
103
127
128
126
42
43
44
45
46
48
50
21 22 23 24 25 27 28
108
SF_CSN SF_CLK SF_DIO SF_DO OSCI OSCO MPLLVLF MPLLVDD RESET_N VDDC APLLVDD APLLVSS ADAC2R AAVSS AMID AAVDD AAVSS DACAVSS VDDP
GPA[13]/TX2
AVO3 DACAVDD AVO2 DACAVSS AVO1 APLLVLF ADAC1L DACAVDD AVO0 FSADJ
GPA[10]/PD[0]
GPA[11]/PD[1]
GPA[14]/PD[2]
VDDC
GPA[3]/DSU1TX/TX1
GPA[2]/DSU1RX/RX1
VDDP
MD[0]
MD[1]
MD[2]
VSSP
MD[3]
MD[4]
MD[5]
MD[6]
MD[7]
MDQM
MD[15]
MD[14] MD[13] MD[11] MD[12]
MD[9]
MD[10]
MD[8]
VDDP MCLK
MA[11]
MA[9] MA[8]
VDDP
MA[7] MA[6] MA[5] MA[4]
MWE_N
MCAS_N MRAS_N
MCS0_N
MBA[0]
VDDC
MBA[1]
MA[10]
VSSP
MA[0] MA[1] MA[2] MA[3]
UPLLVDD
UPLLVLF
UPLLVSS
USB0VDD
DP0
DM0
VDDC
GPB[15]/SDEN
GPB[16]/SDATA
GPB[17]/SCLK/NIMCLK
GPB[18]/MIRR/NIMSYN
GPB[13]/SPDFG/NIMVLD
GPA[16]/INT0/KS_CLK
SAVDD
RFIN
LE
FE
TE
FS
FODAC
SRVM
TRDAC
SAVSS
VSSC
GPB[8]/SLPWM
GPB[6]/SPDPWM
GPB[1]/LATCH[0]
GPB[0]/NIMD[0]
MPLLVSS DACAVSS
GPA[18]/KS_DATA
GPA[17]/INT1
IR/INT3
VDDC
VDDP
GPA[15]/PD[3]
GPB[9]/PD[4]
GPB[10]/PD[5]/KS_DET0
GPB[11]/PD[6]/KS_DET1
GPB[12]/PD[7]
GPA[12]/RX2
GPA[7]/VCLK
SPDIFO GPA[28]/A_SD[0] GPA[29]/A_SD[1] GPA[30]/A_SD[2] ACLK PCMWS PCMCLK
GPB[14]/LATCH[1]
R4210K R41NC
C169 33P
R4310K
C43
27P
C184
68P
R3110K
R186 FB300
R36NC R35NC
RS4
RS5 4.7K
C31
1000P
C29 100n
R183 FB300
FB600
C40
100n
R46 1M
CS4 22P
R40 10K
C38
100n
R38 91K
C28
100n
C185
68P
C42
100n
C32
100n
R30 330
R29 3.3uH
R172
+
EC9
47u/16V
R44
10K
CS1 NC
R3210K
PD6(5)
RF_SCK
FEI(3)
RFO(3)
STRACK
(3) SPK_MUTE(4)
MOCTL-
SFOCUS
(3)
KEYDET1(5)
MNTR
(3)
USB_SW(5)
TEI
(3)
PD3(5)
SSPDON
(3)
CVBS1/Y/G(4)
PD5(5)
RF_SDA
RF_SDEN
USB0_DP
(5)
I2C_SDA
(5)
VCLK(5)
LDON
I2C_SCK(5)
SSLED
(3)
MIRR
SMOTOR(3)
AV_SW
CD_DVDSW
PD0(5)
AOUT_R(4)
IO_MUTE(5)
TFT_RESET(4)
PD4(5)
AOUT_L(4)
KEYDET0(5)
KS_CLK
PD7(5)
SBAD(3)
PD2(5)
KS_DATA
(5)
PD1(5)
USB0_DM(5)
GRUNDIG Service DVD-P 7850
2 - 6

Hauptplatte – Prozessor / Main Board – Processor
2
DEBUG USING
RESET CIRCUIT
DSU1TX
MCLK
MD5
MA5
MD3
/RESET
MD15
MD6
MA11
MD9
MA9
MA0
MD11
MD4
MBA0
MA10
MA3
MA2
MBA1
/CAS
MDQM0
MD14
/RAS
/SCS
MD10
MA8
MD2
TX2
DSU1RX
MA6
MD1
MA1
MD7
MD13
MA4
RX2
MD12
MA7
/WE
MD0
MD8
DGND
DGND
+1.2V
+3.3V
DGND
DGND
DGND
VDD
+3.3VV +3.3VA
DGND
GND
+3.3V
VDD
+3.3V
+3.3V
VGND
C64
100n
C54
100n
C193
NC
C55
100n
C62
100n
D4
RLS4148
R50
10K
R48
4.7K
C50
100n
C49
100n
C65
100n
JP1
PIN HEADER 1X4
1
2
3
4
W986416DH
U6
W986416EH
34
33
32
31
30
29
26
25
24
23
18
17
16
15
2
53
51
50
48
47
45
44
42
13
11
10
8
7
5
4
1
14
27 54
12
63
9
43
41
46
28
22
35
19
39
38
37
40
36
21
20
49 52
A9
A8
A7
A6
A5
A4
A3
A2
A1
A0
RAS
CAS
WE
LDQM
DQ0
DQ15
DQ14
DQ13
DQ12
DQ11
DQ10
DQ9
DQ8
DQ7
DQ6
DQ5
DQ4
DQ3
DQ2
DQ1
VCC
VCC
VCCVSS
VSSQ
VSSQVCCQ
VCCQ
VCCQ
VSS
VSSQ
VSS
A10
A11
CS
UDQM
CLK
CKE
NC
NC
BS1
BS0
VCCQVSSQ
C63
100n
C59
100n
C51
100n
C61
100n
C58
100n
C46
100n
L6FB600/0805
C52
100n
R49 4.7K
+ EC11
10u/16V
C45
100n
+
EC10
10u/10V
JP2
PIN HEADER 1X4
1
2
3
4
C56
100n
C48
1U
C60
100n
C53
100n
C194
NC
EC12
47u/16V
C57
100n
L5
10UH C47
100n
Q6
BC848B
(SOT23)
2
1 3
GRUNDIG Service DVD-P 7850
2 - 7

Hauptplatte – DVD-Laufwerk / Main Board – DVD Drive
3
Lo : CD
Hi : DVD
VR_CD
MOCTL-
FEI
CD_DVDSW
DVD-C
SLED+
TEI
LDON
MDI
TRACK+
SLED-
RF_SDEN
DVD-D
MIRR
CD-E
DCMO+
MNTR
DCMO+
TRACK-
DCMO-
CD-F
DVD-B
DVDLD
RF
RF_SDA
VR_CD
FOCUS-
DVD-D
VR_DVD
CD-E
CD/DVD
VR_DVD
FOCUS+
DVD-B
DVD-A
DVD-A
RF
CDLD
DVD-C
DCMO-
DVDLD
MDI
SBAD
RF_SCK
RFIN
CD-F
RFO
CDLD
CD/DVD
SFOCUS
FOCUS-
SMOTOR
STRACK
TRACK-
TRACK+
DCMO-
DCMO+
SLED-
SSLED
SPPDON
FOCUS+
SLED+
RFVCC
SGND
SGND
MGND
SGND
RFVCC
+3.3VS
VREF25
SGND
+5V
+5V
SGND
RFVCC
RFVCC
DGND
RFVCC
SGND
MGND
+5V
VREF25
SGND
SGND
MGND
RFVCC
+3.3V
+5V
SGND
SGND
+3.3VS
SGND
MGND
SGND
MGND
SGND
SGND
M5V
DGND
SGND
RFVCC
SGND
VREF165
RFVCC
DGND
M5V
MGND
M5V
MGND MGND
VREF165
MGND
R71 100K
U10
BA5954FP
SOP
1
2
3
4
5
6
7
8
9
10
11
12
13
14
28
27
26
25
24
23
22
21
20
19
18
17
16
15
29 30
VINFC
CFCERR1
CFCERR2
VINSL+
VINSL-
VOSL
VNFFC
VCC
PVCC1
PGND
VOSL-
VOSL+
VOFC-
VOFC+
STBY
BIAS
VINTK
CTKERR1
CTKERR2
VINLD
PREGND
PVCC2
VNFTK
PGND
VOLD-
VOLD+
VOTK-
VOTK+
MGND MGND
L10 10uH
C68
100n
Q7
2SB1132
2
1
3
EC18
22u/6.3V
FB6 0R
R76 24K
C74 100n
C166
68P
TP3
C71 1000P
R78 1
C73 680P
L7 10UH
R56
10
R80 1
EC14
47u/16V
C76 100n
FB1 0R
J3
WAFER CONN 6PIN
1
2
3
4
5
6
R51
0
C167
68P
C81 1000P
C77 680P
R181 0R
C98 220P
C90
1500P
C66
100n
CS3 0R
FB15
0R
C94
1000P
C84 100n
C86
100n
R74 33
R179 0R
R52 3.3K
C88
1000P
R66 100K
C67
100n
J2
CONN FLEX 24/SM
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
FO-
FO+
TR+
TR-
C
D
CD/DVD SW
RF
A
B
F
GND
Vref
VCC
E
NC
CD_VR
DVD_VR
CD_LD
MD
HFM
NC
DVD_LD
GND
L9
FB600/0805
EC17
10u/16V C87
100n
R69
22K
R70 10K
C101
100n
C78 680P
C102
100n
R54
12K/1%
R81 1
EC15
10u/10V
C93
1000P
C97 220P
C70
100n
C92
100n
R72 12K
C79 100P
R60 1K
C80 150P
CS2 0R
R62 10K
TP1
R55
10
C100
100n
R77
20K
L11 10uH U9
UTC3308
1
2
3
4 5
6
7
8
AO
A-
A+
V- B+
B-
BO
V+
R64 10KR63 1.5K
R57 0
C75 680P
R67
10K
R79 1
EC16
100u//3528
Q11
2SK3018
2
1 3
R75 10K
R53
10K
C82
100n
R82
47K
L8 10UH
CT901A
U8
CT901A
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
RFAC
VPA
AIP
AIN
A2
B2
C2
D2
CP
CN
D
C
B
A
CD-F
CD-E
VPB
VC
VNB
DVDLD
CDLD
DVDPD
CDPD
LDON
BYP
DIN
DIP
FNP
FNN
VNA
RX
SDEN
SDATA
SCLK
V33
MNTR
FE
TE
PI
V165
PIO
MIN
MLPF
DB
MB
MP
DFT
MIRR
TP2
L12
FB600/0805
Q8
2SB1132
2
1
3
R59
4.7K
EC20
47u/16V
C99
4700P
C91
330P
FB2 0R
R73 10K
C164
68P
Q10
BC848B
2
1 3
R61 1M
C72 100n
EC21
100u/16V
EC19
47u/16V
C96
100n
C95
100n
FB4 0R
R68
22K
C85
100n
R58 1K
FB13 0R
Q9
2SK3018
2
1 3
C69
100n
C165
68P
C83 2200P
R65
1.5K
FB8 NC
C89
680P
TEI(2)
LDON
RF_SDEN(2)
CD_DVDSW(2)
SBAD(2)
RF_SCK(2)
RF_SDA(2,5)
MIRR(2)
MOCTL- (2)
FEI(2)
MNTR(2)
RFO(2)
SSLED(2)
SMOTOR(2)
SSPDON(2)
STRACK(2)
SFOCUS
(2)
GRUNDIG Service DVD-P 7850
2 - 8

Hauptplatte – Analog / Main Board – Analogue (Audio)
4
If AV_SW = LO, Then Input = DVD PLAYER
If AV_SW = HI, Then Input = AUDIO IN
2 CH AUDIO GAIN AMPLIFIER CIRCUIT
AUDIO MUTE CIRCUIT
AIN_L
MUX_RO
AIN_RR
AOR-E
AIN_R
HP_IN
AOL_C
AOL-E
AOR_C
AOL-
MUX_RO
AOUT_L
AOL_C
AV_SW
AOR_C
AOL-
MUTE
MUX_LO
AOUT_R
AIN_LL
ML1
AIN_R
MUTE1
MUX_LO
AOR-
MR1
MUTE1
AOR+
AOR-
MUTE
AIN_L
AOL+
MUTE
VPP
GND
GND
AVREF
GND
GND
+3.3
AVREF
GND
GND
GND
GND
GND
+12VM
DGND
GND
GND
GND
GND
+5V
GND
+12VM
GND
AVDD
GND
AVDD
GND
AVDD
AVCC
AVCC
GND
GND
GND
VPP
VDD
GND
GND
GND
AVDD
GND
GND
GND
GND
AVREF
AVCC
+12VM
+
-
UA1A
MC4558
3
2
1
84
R160 2.2K
+
EC25 10u/10V
U12
LM4863
1
2
3
4
56
7
8
14
15
13
20
17
19
16
18
9 10 11 12
Shutdown
Gnd0
+Out A
VCC0
-Out A
-In A
Gnd1
+ In A
Bypass
-In B
+In B
HP-IN
VCC1
Gnd6
-Out B
+Out B
Gnd2 Gnd3 Gnd4 Gnd5
R128 NC
D5 RLS4148
R94 100
C123 10u/0805
R124 10R
Q13
BC848B(SOT23)
1 3
R93 100
C110 68P
R111 6.8K
C115
100n
R133
1K
ZD1
ZD 4.7V
R187
100R
R96 6.8K
R136
100K
C177
22P
R122 4.7K
R165 0R
R108 7.5K
+
EC30 47u/16V
R174 0R
+
-
UA1B
MC4558
5
6
7
84
R107
10K
GND
FB7 0R
R98
10K
+
EC27 10u/10V
R139 100K
C120
220P
C129
100n
R118
15K
U11 74HC4053
12
13
2
1
5
3
6
14
15
4
168
7
11
10
9
X0
X1
Y0
Y1
Z0
Z1
EN
X
Y
Z
VCCGND
VEE
A
B
C
R129
24K
+
EC28 10u/10V
R114 6.8K
R123 4.7K
C107
100n
R109 100
R125 36K
R90 6.8K
R132 NC
R127 200
Q17
BC848B(SOT23)
2
1 3
R117
15K
R103 6.8K
R91
15K
C133
2.2u/0805
C121
680P
C140
1u
Q15
BC858
2
13
C124 10u/0805
C113
680P
+
EC23
10u/16V
EC24
10u/10V
R89 47K
R100 47K
RS3 0R
C134
NC
C136
2.2u/0805
L15
FB300
C135
NC
R104
15K
R113 6.8K
R101 470K
FB5 0R
R85
10K
R83
10/0805
R92 7.5K
C116 68P
R105 470K
C141
0.33u/0805
R185
10K
C128
100n
C111
10u/0805
R126 36K
R112 6.8K
RS2 0R
R99 470K
R110 100
R95 6.8K
R97 470K
R131
24K
R130
1K
R84 10K
C112
220P
C122
1000P
+
EC31 47u/16V
R121 4.7K
R141
10K
L14 FB80/0805
R137
100R
R166 0R
+
EC29 10u/16V
+
EC26 10u/10V
C114
1000P
Q16
BC858
2
13
C117
10u/0805
+
EC22
330u/16V
Q14
BC858
2
13
Q12
BC848B(SOT23)
1 3
R120
560/0805
C104
100n
AV_SW(5)
SPK_MUTE(5)
AOL- (5)
AOL+ (5)
AOR+ (5)
AOR- (5)
AOUT_L
(2)
AOUT_R(2)
IO_MUTE(5)
GRUNDIG Service DVD-P 7850
2 - 9

Ear Phone
VIDEO FILTER CIRCUIT
AV_IN
Ear Phone
AV_OUT
AOR-E
AOL-E
AOR-E
CVBS1/Y/G
AIN_RR
HP_IN2
AOL-E
HP_IN2
HP_IN1
CVBS1/Y/G_O
CVBS1/Y/G_O
ML1
MR1
AIN_LL
HP_IN1
CVBS_IN
GND
GND
GND
GND
VGND
GND
AVDD
VGND
GND
GND
GND
C171
150P
RS12 FB600
L13
1.8uH/0805
J5
PHONE JACK
1
2
3
4
C189
?P
C172
150P
C175
680P
C118
680P
U14A
74HC02
2
3
1
C191
?P
C137 0.1uF
R87 150R
J6
AV JACK
4
3
5
2
1
C173
150P
C130
680P
R88 150R
R102 150R
C138
33P
R86
75
R135
100k
R138 300
R115 33R
C109
680P
C125
680P
R106 150R
LU1
3.3uH/0805
R116 FB600
FB23
0R
C190
?P
R161 FB600
R134
100k
R140 300
R119 FB600
J7
AV JACK
4
3
5
2
1
C105
100P
C174
680P
C131
22P
C139
33P
J4
PHONE JACK
1
2
3
4
C108
680P
C176
680P
C126
22P
RS11 FB600
RS10 33R
U14B
74HC02
5
6
4
C106
180P
C103 22P
C127
680P
C132
680P
C119
680P
CVBS_IN
HP_IN
CVBS1/Y/G
(2)
HP_IN1
HP_IN2
Hauptplatte – Analog / Main Board – Analogue (IN/OUT)
4
GRUNDIG Service DVD-P 7850
2 - 10