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DAEWOO ELECTRONICS DSD-9251MAV, Руководство по обслуживанию

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31

FIXING ERRORS

(1) AUDIO ERROR

3. Errors in Audio and Video

Check the power status of
Audio DAC

Eliminate problems

Check the Input Signal PCM
Data, SCLK, LRCLK,
PCMCLK)

YES

NO

YES

NO

NO

Check the STi 5518

Check the Interface OF
Audio AMP IC.

Replace STi5518

Replace Audio DAC

Eliminate problems

Replace Audio AMP

Audio AMP Check

Audio Buffer Check

Eliminate problems

Confirm the connection status of Port

YES

NO

YES

YES

YES

NO

NO

3. Errors In Audio and Video

All manuals and user guides at all-guides.com

Содержание DSD-9251MAV

Страница 1: ...So if you need the latest parts information please refer to PPL Parts Price List in Service Information Center http svc dwe co kr DAEWOO ELECTRONICS Corp June 2004 http svc dwe co kr Service Manual D...

Страница 2: ...GENERAL INFORMATION 2 CIRCUIT OPERATION MANUAL 7 FIXING ERRORS 28 BOM LIST 33 SCHEMATIC DIAGRAM 40 PARTS PLACEMENT ARRANGEMENT 53 1 CONTENTS All manuals and user guides at all guides com...

Страница 3: ...agement favorite move lock rename delete and sort User programmable Satellite Transponder information Automatic search for newly added transponder NIT search Stores up to 4000 channels Support softwar...

Страница 4: ...o dripping or splashing and that no objects filled with liquids such as vaseds shall be placed on the apparatus UNPACKING 1 x Remote Control Unit RCU 2 x AAA battery option GENERAL OPERATION Throughou...

Страница 5: ...menu screen or enters the Desired value in any input mode Returns to the previous menu or exit window Moves up down a page in the channel list Executes sort or deletion of satellite Pauses Resumes the...

Страница 6: ...function RF Modulator Optional function Connect to TV and VCR using a SCART cable Optic jack Optional function Connect Video to a TV using RCA jack Connect Audio L R to TV or Audio device Serial Conne...

Страница 7: ...x 576 pixels for PAL Aspect ratio 4 3 or 16 9 Audio format MPEG Layer I and II Channel Mode Stereo Mono Mode Audio Signal Sample Rate 32 44 1 48 Ksps Audio Signal bandwidth 15Hz 20KHz Bit Resolution 2...

Страница 8: ...7 CIRCUIT OPERATION MANUAL 1 Block Diagram DSD 9251EAV Block Diagram All manuals and user guides at all guides com...

Страница 9: ...3 H 0001 0111 1100 0000 K04 4 E8 H 04 H 0001 0111 0010 0000 K05 5 E8 H 05 H 0001 0111 1010 0000 K06 6 E8 H 06 H 0001 0111 0110 0000 K07 7 E8 H 07 H 0001 0111 1110 0000 K08 8 E8 H 08 H 0001 0111 0001 0...

Страница 10: ...x01 3 0x14 2 0x02 4 0x13 3 0x03 MENU 0x22 4 0x04 EXIT 0x23 5 0x05 TV RADIO 0x0A 6 0x06 RECALL 0x20 7 0x07 INFO 0x21 8 0x08 EPG 0x24 9 0x09 UHF 0x26 0x15 SAT 0x10 TV AV 0x16 FREEZE 0x1E 0x12 red 0x27 A...

Страница 11: ...DMUX input Serial and to support 32Pid Boosting 8 Level INT Supporting DMA and other multi PID 2 MPEG DMAs Serial IEEE 1394 Hardware transport strearn demux 2 Kbytes Instruction cache 2K Data cache an...

Страница 12: ...ropriate the colors are not be seen on the screen or the screen will display broken features 4 PIO Structure Sti5518 supports PIO that back up 5 number of Ports 8bit as of PIO0 PIO1 PIO2 PIO3 and PIO4...

Страница 13: ...t data Feature 7 I2 C Timing Chart 3 PIO Map PIO NAME I O Function Remarks PIO1_0 I2C_Data SSC0 I O PIO1_2 I2C_Clk O PIO1_3 NOTPGM_EN O L Flash program enable PIO1_4 SLOW_S W I H VCR Scart Input ON L...

Страница 14: ...rigger IN PIO3_6 Trigger OUT PIO3_7 Used when debugging with DCU Tool REMOCON_IN PIO4_6 Recognize the REMOCON signal being sent from IR Sensor 5 Memory Interface Sti5518 can support both On chip memor...

Страница 15: ...e Memory Map The size of EMI Bus is 16bit and also support for the 8bit Bus The Bank0 of EMI can support DRAM Interface while rest of Bank as of Bank1 2 and 3 can only support SRAM ROM and Peripheral...

Страница 16: ...0 ns tRCA CH Read Data valid to Reference Clock high 13 0 ns tCHRDX Read Data hold after Reference Clock high 2 0 ns tSVRDX Read Data hold after Strobe valid 0 0 ns 1 tCLWOV Reference Clock low to Wr...

Страница 17: ...16 CIRCUIT OPERATION MANUAL EMI Interface Timing All manuals and user guides at all guides com...

Страница 18: ...ed into one Module Following feature shows the Block Diagram 2 WIRE BUS CONTROL Direct conversion ZIF Tuner 4MHz 4MHz TDA8260 INSIDE LPF Matched Filter Matched Filter 2 wire bus control AGC control Tr...

Страница 19: ...5V RF 5V OF RF AMP 20mA TYP 20mVp p 4 AGC AGC MONITORING 5 5V 5V OF 2 nd AMP ZERO IF IC 20mA TYP 20mVp p 6 GND 7 VT TUNING VOLTAGE 30V 20mVp p 8 I I SIGNAL MONITORING 9 Q Q SIGNAL MONITORING 10 5V PO...

Страница 20: ...22khz Tone Pulse The power supplied to LNB sends the 22Khz Tone signal that is used in horizontal 18V vertical 13V and frequency Band and Diseqc Command Chart 6 LNB Control signals 22KHZ Tone Spec is...

Страница 21: ...mode There are 6 Pins for the Analogue Video output CVBS S VHS Y C RGB Moreover it supports Teletext closed captions and CGMS Following picture shows the signal formats from the individual output 1 C...

Страница 22: ...ow Cyan Green Magenta Red Blue Block 400 388 316 284 238 204 152 BLACK BLANK WHITE LEVEL LEVEL SYNC IFVFI Color Burst 10 Cycles Maintain 300mV Maintain 300mV White Yellow Cyan Green Magenta Red Blue B...

Страница 23: ...e DSD 9251EAV is as following Chart 9 Slow Fast Blanking Function Chart 70 TV SCART Connector Pin SCART CONNENTOR Following Table shows the Scart Connector Can select either TV AV mode or 16 9 4 3 mod...

Страница 24: ...Instruments Following diagram shows Timing Diagram with Audio DAC and TI PCM1754 Block 2 Audio Pin Name Description Singnal Level Impedance 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 AOR A...

Страница 25: ...4 Texas Instruments which are IC of the Digital Audio Encoding system in SPDIF format The signals are entered from the PCM Format I2S Format The Digital Signals that were encoded in SPDIF go through d...

Страница 26: ...d in Front Panel Check whether the User Data is being loaded to Main RAM from the Flash ROM Check the validity of Data Following Booting Message will be seen after executing UART Emulator Program when...

Страница 27: ...Initialization Creating TUNER module semaphores module_type 148 Successfully Installed TUNER module 5 MPEG SDRAM configuration MPEG SDRAM configuration Video Bit Buffer Size 400 Kbytes From 0xc0000000...

Страница 28: ...parsing process start LOAD POSt parsing process start LOAD POSt parsing process start LOAD POSt parsing process start LOAD POSt parsing process start Last Channel didn t save before Last Channel didn...

Страница 29: ...clock Flash Cs output status Check CPU power STi5518 Pin27 High Check ROM Booting Mode Check Wait Signal STi5518 Pin131 Low Eliminate the problems Replacing STI5518 BUS Interface port Check short ope...

Страница 30: ...PIN3 Eliminate problem causing factors Replace LNBP Check the power of LNB 13V 18V 12C Line Check Reset Check Check Locking Voltage 1 16V Tuner PIN 13 near TP Replace Tuner B Check IC related parts Ch...

Страница 31: ...r the output is in High Status Replace Tuner Tuner interface Signal check TS_Data F_packet_clk F_strt F_B_clk Fix the problem Pts Crystal Check Stream Input Signal check Link_Data Link_B_clk Link_val...

Страница 32: ...K LRCLK PCMCLK YES NO YES NO NO Check the STi 5518 Check the Interface OF Audio AMP IC Replace STi5518 Replace Audio DAC Eliminate problems Replace Audio AMP Audio AMP Check Audio Buffer Check Elimina...

Страница 33: ...s of Sit5518 Video Pin 23 Pin30 Check Related Circuits and execute the fixing process Replace STi5518 I V Ref Check STi5518 Pin28 29 Pin35 36 Verify the resistance value and perform necessary operatio...

Страница 34: ...VMPJ1M085 MAINCHIPMOUNTAAS DSD 9251EAV C101 HCQK270JBA CCHIPCERA 50VCH27PFJ1608 C102 HCBK104KBA CCHIPCERA 50VX7R0 1MFK1608 C103 HCBK104KBA CCHIPCERA 50VX7R0 1MFK1608 LOC PARTCODE PARTNAME PARTDESC REM...

Страница 35: ...R0 1MFK1608 C730 HCBK104KBA CCHIPCERA 50VX7R0 1MFK1608 LOC PARTCODE PARTNAME PARTDESC REMARK C735 HCBK104KBA CCHIPCERA 50VX7R0 1MFK1608 C738 HCBK104KBA CCHIPCERA 50VX7R0 1MFK1608 C741 HCBK104KBA CCHIP...

Страница 36: ...1 16 10KOHMJ1608 R142 HRFS103JBA RCHIP 1 16 10KOHMJ1608 LOC PARTCODE PARTNAME PARTDESC REMARK R143 HRFS470JBA RCHIP 1 1647OHMJ1608 R144 HRFS470JBA RCHIP 1 1647OHMJ1608 R145 HRFS470JBA RCHIP 1 1647OHM...

Страница 37: ...OHMJ1608 R507 HRFS829JBA RCHIP 1 16 8 2OHMJ1608 R508 HRFS750JBA RCHIP 1 1675OHMJ1608 LOC PARTCODE PARTNAME PARTDESC REMARK R509 HRFS681JBA RCHIP 1 16 680OHMJ1608 R510 HRFS681JBA RCHIP 1 16 680OHMJ1608...

Страница 38: ...O 16VRM100MF5X11 C414 CEXE1C101E CELECTRO 16VRM100MF5X11 C417 CEXF1C470A CELECTRO 16VRSM47MF 5X7 TP LOC PARTCODE PARTNAME PARTDESC REMARK C420 CEXE1C101E CELECTRO 16VRM100MF5X11 C425 CEXF1C100A CELECT...

Страница 39: ...ACASE IC802 1KA431AZ ICREGULATOR KA431AZ1 TO 92 LOC PARTCODE PARTNAME PARTDESC REMARK L803 56C220K695 COILCHOKE CAPTYPE 22UHK9X11 1 CAPTYPE L804 56C220K695 COILCHOKE CAPTYPE 22UHK9X11 1 CAPTYPE L805 5...

Страница 40: ...12M P602 97P62K04E9 CONNFFC SCB 2109 M 209PST RF601 97P7214400 MODULATORRF SSM GKI1 U601 97P65442JA PCBJACK 42X48 6 247X199 20 D1B LOC PARTCODE PARTNAME PARTDESC REMARK DSD 9252 D103 D1N4004SRT DIODE...

Страница 41: ...40 SCHEMATIC DIAGRAM All manuals and user guides at all guides com a l l g u i d e s c o m...

Страница 42: ...41 SCHEMATIC DIAGRAM All manuals and user guides at all guides com...

Страница 43: ...42 SCHEMATIC DIAGRAM All manuals and user guides at all guides com...

Страница 44: ...43 SCHEMATIC DIAGRAM All manuals and user guides at all guides com...

Страница 45: ...44 SCHEMATIC DIAGRAM All manuals and user guides at all guides com...

Страница 46: ...45 SCHEMATIC DIAGRAM All manuals and user guides at all guides com a l l g u i d e s c o m...

Страница 47: ...46 SCHEMATIC DIAGRAM All manuals and user guides at all guides com...

Страница 48: ...47 SCHEMATIC DIAGRAM All manuals and user guides at all guides com...

Страница 49: ...48 SCHEMATIC DIAGRAM All manuals and user guides at all guides com...

Страница 50: ...49 SCHEMATIC DIAGRAM All manuals and user guides at all guides com...

Страница 51: ...50 SCHEMATIC DIAGRAM All manuals and user guides at all guides com a l l g u i d e s c o m...

Страница 52: ...51 SCHEMATIC DIAGRAM All manuals and user guides at all guides com...

Страница 53: ...52 SCHEMATIC DIAGRAM All manuals and user guides at all guides com...

Страница 54: ...53 PARTS PLACEMENT ARRANGEMENT All manuals and user guides at all guides com...

Страница 55: ...54 PARTS PLACEMENT ARRANGEMENT All manuals and user guides at all guides com...

Страница 56: ...55 PARTS PLACEMENT ARRANGEMENT 9252 FRONT PCB All manuals and user guides at all guides com a l l g u i d e s c o m...

Страница 57: ...56 PARTS PLACEMENT ARRANGEMENT 9251 FRONT PCB All manuals and user guides at all guides com...

Страница 58: ...57 PARTS PLACEMENT ARRANGEMENT All manuals and user guides at all guides com...

Страница 59: ...686 AHYEON DONG MAPO GU SEOUL KOREA C P O BOX 8003 SEOUL KOREA DAEWOO ELECTRONICS Corp All manuals and user guides at all guides com...

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