Service Manuals, User Guides, Schematic Diagrams or docs for : . Rare and Ancient Equipment COBY Audio DVD224 DVD224
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5 4 3 2 1
CT908 ---- SINGLE CHIP DVD SOLUTION
Designed for Dolby 5.1 channel Certification
D D
With YUV & RGB & P_SCAN Analog Video Output
CHEERTEK-ROADWELL
CT908
RF POWER&AUDIO
STANDBY
RFO STANDBY STANDBY
RFO RFO SCART_SW
SCART_SW SCART_SW
C C
LDON SCART_TV
LDON LDON SCART_TV SCART_TV
SCART_RGB
RF_SDEN SCART_RGB SCART_RGB
RF_SDEN RF_SDEN
CVBS1/Y
CVBS1/Y CVBS1/Y
RF_SCK CVBS2
RF_SCK RF_SDA RF_SCK CVBS2 CVBS2
RF_SDA LEI RF_SDA Y/CB
LEI FEI LEI Y/CB Y/CB
FEI FEI C/CR
CD_DVDSW C/CR C/CR
CD_DVDSW CD_DVDSW MIC_MUTE
TEI MIC_MUTE MIC_MUTE
TEI TEI /ADC_RST
SBAD /ADC_RST /ADC_RST
SBAD MIRR SBAD ADAC_CS0
MIRR MIRR ADAC_CS0 ADAC_CS0
SFOCUS ADAC_CS1
SFOCUS SFOCUS ADAC_CS1 ADAC_CS1
SSLED ADAC_SCK
SSLED SSLED ADAC_SCK ADAC_SCK
SSPDON ADAC_SDA
SSPDON SSPDON ADAC_SDA ADAC_SDA
STRACK VSYN
STRACK STRACK VSYN HSYN VSYN
SMOTOR HSYN HSYN
SMOTOR SMOTOR ACLK
ACLK ACLK
TRAYOPEN PCMCLK
TRAYOPEN TRAYOPEN PCMCLK PCMCLK
TRAYCLOSE PCMWS
TRAYCLOSE TRAYCLOSE PCMWS PCMWS
MOCTL-
MOCTL- MOCTL-
B B
OUTSW SPDIF+
OUTSW OUTSW SPDIF+ PCMSD0 SPDIF+
INSW PCMSD0 PCMSD1 PCMSD0
INSW INSW PCMSD1 PCMSD2 PCMSD1
HOMESW PCMSD2 PCMSD3 PCMSD2
HOMESW HOMESW PCMSD3 ADC_SDA PCMSD3
ADC_SDA ADC_SDA
CT908&MEMORY
SP3721&MOTO DRIVER POWER&AUDIO DAC
A A
REVISION TABLE TITLE: VER: 1.8B SIZE: A4
SCHEMATIC 1.0 MODEL: DVD224 DATE: 13/3/2004
DRAWN SHEET 1 OF 4
LAYOUT 1.0
CHECKED
APPROVED
5 4 3 2 1
5 4 3 2 1
VDD VFD PANEL
+3.3V VDD
U1
R1 4.7K SA16 8 J1
VCC C1 C2 R187
7 5SB
SA19
MODE 1
SA18
SA17
SA16
R2 4.7K SA17 I2C_SCK
SA7
SA6
SA5
SA4
SA3
SA2
SA1
SA0
6 SCL E0 1 10K SBY 2
SA15
SA10
SA14
SA13
SA12
SA11
2 104P 104P I2C_SDA
SA9
SA8
R3 4.7K SA18 I2C_SDA E1 I2C_SCK 3
5 SDA E2 3 4
4 VFD_CS
R4 4.7K SA19 VSS IR_INT 5
24C02/SOP 6
SD7
SD6
SD5
SD4
SD3
SD2
SD1
SD0
R5 10K I2C_SDA SCART_SW DGND 7
/FWR SCART_TV SCART_SW 8
SCART_RGB SCART_TV AC2 9
R6 10K I2C_SCK /PSEN
/RD SCART_RGB AC1 10
DGND
RXD -22V 11
R7 10K /PSEN
TXD 11PIN,2.0mm
/WR
D IR_INT C3 47P D
VFD_CS ALE
I2C_SCK
I2C_SDA +3.3VV
P4.3
L1 FB600 VDD
+3.3V R8
+1.8V +3.3V
C4 C6 C7 EC1
+ EC2 10K R9 100 /uPRST
3
33uF/16V
2 C8
104P 104P 104P 100u/16V Q1 C150 CLOSE TO CT908 VDD
156
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119
118
117
116
115
114
113
112
111
110
109
108
107
106
105
R10 2N9014 100P
U3 D1 4 HEADER
1
5.1K
CT908 IN4148
T2/P1.0
RD/P3.7
WR/P3.6
T1/P3.5
T0/P3.4
INTM/GPA6/P3.3
INT0/P3.2
TXD1/P3.1
RXD1/P3.0
SD7/P0.7
SD6/P0.6
SD5/P0.5
VDD
SD4/P0.4
SD3/P0.3
SD2/P0.2
SD1/P0.1
SD0/P0.0
PSEN
SA9/P2.1
SA8/P2.0
FWR
SA7
SA6
SA5
VDD
SA4
SA3
SA2
SA1
SA0
VDDDAC
VSSDAC
AVDDref
VDDP
VSSP
VSS
ALE
SA15/P2.7
SA14/P2.6
SA13/P2.5
SA12/P2.4
SA11/P2.3
SA10/P2.2
VSSP
VSS
BSA16/P4.0
BSA17/P4.1
BSA18/P4.2
BSA19/P4.3
VDDP
AVSSref
TXD 1
VGND DGND RXD 2
3
C9 104P 4
157 T2EX/P1.1 VREF 104
158 103 R11 68 DGND JP1
RXD2/P1.2 FSADJ C10 104P
159 TXD2/P1.3 COMP 102 +3.3VV
160 101 DGND
VSS AVDD CVBS1/Y
161 INTS/GPA7/P1.4 AVO0 100 CVBS1/Y
162 VDD AVSS 99
P5.0 163 P1.5 AVDD 98
164 97 Y/Cb
P5.0 P1.6 AVO1 Y/CB
P5.0 165 P1.7 AVSS 96
166 VSSP AVDD 95
167 94 C/Cr
STANDBY GPA3 AVO2 C/CR
168 GPA2 AVSS 93
169 VDDP AVDD 92
170 91 CVBS2
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