DVR-R2 Service Manual
Contents
1. YES NO Check D2 D3 and peripheral If it has 3 3V output circuit YES NO Check DZ2 D5 RF1 especially If it has 12V output RF1 and peripheral circuit YES YES NO Check DZ3 DZ4 D6 and peripheral If it has 12V output circuit YES NO Check DZ5 D7 D8 and peripheral If the other has 5V circuit output NO If it has 3 5V between ne rare ae D10 D and D and peripheral circuit YES No Check DZ6 D11 and peripheral A circuit If it has 24V output Exchange transformer YES Figure The power supply work normally 9 a Power supply board troubleshooting schematic diagram VI Maintenance Example 1 One BSA 3800R player with nothing displays on LCD screen check the power supply part and find there is no 24V voltage output Then find D11 is invalid exchange it 2 One BSA 3800R player loading a disc with 5 1 CH find there is no sound from surround left and surround right Then find the sound signal is normal before amplified by RC4558 so can confirm that RC4558 is invalid exchange it 3 One BSA 3800R player is found that there is no audio output from 5 1 CH find it is still has no sound before amplified by RC4558 so exchange PCM1606 DAC 4 One BSA 3800R player neither has sound from 5 1 CH nor 12V voltage output then check to find RF1 102 safety resistance is invalid exchange it 5 One BSA 3800R player switch to different video output when it is connecting with SCART TV For example after S VIDEO system swit2. HA 2 0 controler HD 15 0 Epc System multi 9Kx32 ROM HIRO ATAPI output JACK 2 HORDY 512x32 SRAM HWR HRD HIOCS16 Audio i YUVI7 0 DVD system Video dealer PCLK2XSCN serial decodi ene Video output PEPKQSCN Screen i HSYNC TDMCLK jack Screen display DAG TDMDR TDMDX TDM Video encoder UDAC TDMFS TDMTSC HAGR Register AUXI7 0 12C GPIO RESET VFD s Time o clock XIN 7 Figure 4 ES6128 interior XOUT diagram III Whole unit circuits analysis 1 Main chip circuit The main frequency of ES6128 is 121MHz and it has a external 128Mbit SDRAME its working voltage is 3 3V or 2 0V The working voltage of ES7010 is 3 3V or 2 5V The voltage of workgroup that connecting between mainboard and power supply board is 5V 3 3V respectively Its order is 5V GND GND GND 3 3V 3 3V DVDOFF 3 3V 2 5V 2 0V can be transferred by REG3 REG 3 3V REG11 REG 2 5 REG1 REG ADJ and then outputted at middle pin The mainboard including reset circuit time clock circuit 12C memorize circuit FLASH software controlling circuit 2 Reset circuit vcc Figure 5 Reset circuit diagram Reset circuit is composed by reset IC V6300 reset IC PINS to 5V power supply PIN4 output reset signal PIN2 to GND After power on PINS produce a signal with 4 5V level From the above figure you can see that reset IC U55 provides the reset signal for ES6128 ES7010 8M FLASH LVTH273 ISP2064 ES6128 ES7010 8M FLASH LVTH273 ISP2064 If the r
3. Ontos circuit assemble BSCAN We HON i 1014 Figure 3 ISPLSI 2064 a interior diagram ES6128 is a integration with single chip and MPEG video decoder lIt composites progressive video decoding function to make the picture more clear and more real The main frequency of it is 27MHz ES6128 can deal the audio data signal and can encode TV signal it including 4 video DACs and supports Marovision anti copy function At the same time is has DVD system induct function system control function and manage function It based on double CPU that is programmable multiplayer including 32 bits RISC 64 bits DSP digital signal processor The double processor can be connected through two separated data bus Every processor has its own direct memorizer DMA and outside memorizer jacks When the system is encoding and decoding double processor can execute the system command and data dealing It not only supports parallel ATAPI chip ports but also supports serial ATAPI chip ports this will makes the audio video data signal input be possible The standard I S audio data will be input to DACs and output to ADCs High speed EPROM SDRAM command access audio video data buffer It supports DVD SVCD VCD1 1 VCD2 0 Karaoke CD MP3 Following is the interior diagram of ES6128 SDRAM DSCK_EN DSUK DQM LA 21 0 DCS I1 01 LCS 3 0 SDRAM DRAM DMA 11 0 LD 15 0 JACK JACK UDWE DOE LWRHL DRAS 2 0 LWRLL LOE E S S MPEG DB I5 0 RISC decoder NOI DMA
4. signal Figure 1 BSA 3800R mainboard schematic diagram Send one group of Video 1 or Video 2 or S video or TV video signal to SAA7114 video decoder SAA7114 is apply to the control aspect of video graphic array It has six groups of separated inputs After interior software controlled and chosen the original signal video AD will be transferred to digital signal and output from 81 94 pin The digital video signal will be sent to ES7010 and ES6128 through the data buffer LVT244B When it enter into the outside source digital video signal will be directly outputted the video signal by ES6128 decoder This way is called direct signal it will shorten the time of transferring between signal output and video output and it can avoid the complicated step of encoding and decoding to make the switch speed of TV channel be faster When it recording the digital video signal will be recorded into DVD R RW disc by ES7010 decoder and then the decoded signal will be sent to ES6128 decoder to output video signal Three groups of audio signal will be chosen one group to output at 3 and 13 pins through 4 groups multi output CD4052 The chosen audio signal will be transferred into digital audio signal by stereo audio ADC that integrated with WM8739 The digital audio signal will be sent to ES7010 decoder ES7010 is a MPEG2 audio amp video encoding chip The main frequency of ES70101 is 27MHz In ES7010 there are one unit of video decoding amp decoding trans
5. BSA 3800R Service Manual I Introduction of the Function BSA 3800R is Digital recorder amp player it is the representative product in DVR series of Wanlida It can recorder the signal of video tape recorder or of vidicon or of TV to be DVD disc It supports recording DVD R RW discs It composites two groups of video input one group of S video TV signal etc Real time clock set it can support recording programs by presenting time channel times of channel and quality level For example one DVD R W disc of 4 7G will cost 1 hour 2hours 3 hours and 4 hours differently with different recording quality level BSA 3800R composites video S video RCA video output 5 1 CH Optical Coaxial audio output Built in all range of TV frequency Tuner II Schematic Diagram BSA 3800R adopts NEC recorder chip ND 1100A based on ATAPI jack The whole system based on ES7010 ES6128 decoder chip input origin signal and TV signal then transfer to digital signal by SAA7114 decoder The digital signal will be recorder DVD signal after dealing by ES7010 encoder The following is the schematic diagram of mainboard Data Buff alae Video ata Buffer Data Buffer ide Tuner 12M SDRAM 1 2 vide signal Video ES7010 decoder Data Video SAA7114 ES6128 CPLD outpt input Kidis ISP2064VE t A u dio switch Infout Audio ADCWM8739 CD4052 input buffer WMS ESS Audio DVD R RW 4 64M SDRAM VO LVTH273 Panel control Videc Vide ITV EPROM 16M FLASH signal and others 1 2
6. a signal between WM8739 and signal between between 7010 and SDRAM between ES7010 and ES7010 relevant 7010 and 6028 or exchange SDRAM two SDRAM resistance is RN16 YES Figu re 8 Mainboard troubleshooting check schematic diagram 3 If the main frequency of ES6128 is 121MHz 4 Test the communicated signal between ES6128 and SDRAM and test the communicated signal between ES6128 and 16M FLASH 5 RN15 RN23 RN25 RN30 Test the resistances RN15 RN23 RN25 RN30 of ES7010 Enter into the situation of monitor if it takes abnormal picture you should test the communicated signal between SAA7114 and ES6128 and test the work of SAA7114 If it hang up when it is recording you should test the following 1 the communicated signal between ES7010 and 64M SDRAM 2 Test the 8 channels of digital video signal between SAA7114 and ES7010 3 Test the communicated signal between WM8739 and ES7010 the relevant resistance is RN16 4 Test the output of ES7010 to LVT244B and the data buffer which composed with LVT374 Test the 8 channels of digital video signals the relevant resistances are RN20 RN24 5 Test the digital video data signal of data buffer to ISP2064 and ES6128 The mainboard and output board have composite output S video RCA video output Audio output has 5 1 CH audio output optical coaxial digital audio output It includes 5 1 channel audio DA circuit audio amplify circuit optical and coaxial output circuits SCART audio vid
7. cannot work normally exchange the U22 X1226 and 32 768KHZ crystal oscillator the trouble still exists Exchange 3 6V battery the trouble still exists Check diode between D4 BAT54 audion and battery exchange BAT54 so the trouble is removed
8. ch to Y PB PR system TV can not switch automatically to AV input Check and find there is one audion among four audions is invalid exchange it 6 One BSA 3800R player cannot display picture after turning on Check and find there is no 5V 3 3V voltage output from power supply board and find there is no voltage output from transformer exchange transformer so the trouble is removed 7 One BSA 3800R player cannot display picture after turning on Check the voltage of mainboard is normal the outputs of REG1 REG2 REG11 are normal too Test the frequency of crystal oscillator it s normal then find the reset signal is abnormal exchange the reset IC so the trouble is removed 8 One BSA 3800R player cannot display picture after turning on Check voltage reset signal and crystal oscillator circuit all of them work normally Then check the main frequency of main chip ES6128 PIN102 is incorrect find the resistance of PLL is broken re solder the chip 9 One BSA 3800R player cannot display picture after turning on Check voltage reset signal crystal oscillator circuit and main frequency of ES6128 all of them work normally Find that there is no communicated signal between ES6128 and SDRAM but there is communicated signal between ES6128 and 16M FLASH re solder SDRAM but there is still no signal between them Re solder the resistances between ES6128 and SDRAM so the trouble removed 10 One BSA 3800R cannot read and after replacing m
9. echanism the trouble still exists Re solder pins between ES6128 and APAPI port re solder ISP2064 and re solder the resistances between ES6128 and APAPI port the trouble still exists May ISP 2064 is invalid exchange it and the trouble removed 11 One BSA 3800R player cannot enter into the situation of connecting external signal find there is one signal of 8 signal lines between the communication of SAA7114 and ES6128 Re solder the resistances the trouble is removed 12 One BSA 3800R player is hang up when it is recording with external signal check the communication between ES7010 and SAA7114 and check the communication between ES7010 and 64M SDRAM all of them are work normally Then find there is no signal between ES7010 and ISP2064 and neither signal between ES7010 and WM8739 so may WM8739 is invalid exchange it and the trouble is removed 13 One BSA 3800R player is hang up when it is recording with external signal The signals of above are normal but there is no signal output after passing data buffer that is composed by LVT244B and LVTH374 Find there is a bad solder dot on the LVT244B leads to LVT244B cannot work re solder it and the trouble is removed 14 One BSA 3800R player has picture but sound when it connecting with TV find there is audio signal exists before CD4052 but not exists after it Check the voltage of chip re solder it the trouble still exists so find CD4052 is invalid 15 One BSA 3800R player s clock
10. eo output circuit SCART SCART circuits is composed with three SCART controlling signal lines and one audion controlling circuits It can switch different AV situations of TV with SCART port by voltage level s high and low Three SCART lines produce high and low voltage level signal by LVTH273 of mainboard it can control the audion Optical and coaxial circuit is built by the digital audio signal which outputted by mainboard then amplified by VHCU04 at last it will output at the coaxial jack The video output circuit is mainly about mainboard output all kinds of video signals these signals can be outputted on all kinds of video output jacks after matching the circuits The mainboard outputs digital signal and transferred to 6 channels audio by PCM1606 DAC transfer circuits and then the 6 channels s audio would be output after amplified by amplified circuits This process can build 5 1 channel output circuit The main trouble displays that there is no sound from 5 1 channels or no audio output from one group of 5 1 channels or there is no audio signal from optical and coaxial If it takes troubles you should analyze the troubles from back to forward step by step If it has no audio output you should check RC4558 amplifier and the process of digital audio to simulate audio V Power supply board troubleshooting flow Power on DJ NO Check DZ1 4V7 regulator If transformer has output If it has 5V output D1 31DQ04 and peripheral circuit
11. eset signal can not work normally the other composite chips can not work normally so leading to no picture after power on 3 The time clock circuit is composed by 27MHz 24 576MHz crystal oscillator and their multiple frequency circuits The time clock ACLK of WM8739 can be produced by 24 576MHz crystal oscillator s half frequency 27MHz crystal oscillator can provide ES6128 and time clock of ES7010 The following is part circuit figure of it R43 R29 VCC33 VCC33 OSC3 1 4 EN vcc pon 2 eno out ar N gsc 27 0MHZ TMZ GND 11 9 pie 9 may Ha S vite A2 Y2 a y3 19 43 l R109 R293 33 OHM USO WM8739 PIN3 lt lt ADCCLK 33 OHM U18 ES7010 PIN2 lt lt ACLK AAS OHM lt lt CPUCLK 33 OHM 9S STCLK AA __ cp STOK U15 ES6128 PIN105 U18 ES7010 PIN34 U2 ISPCPLD2064 PINS 27MHz AROM pouor INNI OHM XIN AN sane sek U15 ES6128 PIN116 U15 ES6128 PIN49 U18 ES7010 PIN28 6 Time clock circuit From the above figure you will see that the time clock circuit is mainly composed by 27MHz 24 576MHz crystal oscillator so the stability of crystal oscillator count for much the reliability of system In the case of no picture after power on you should check 27MHz 24 576MHz crystal oscillator besides IC reset signal Check the output frequency of crystal frequency after passing the IC and check the frequency that reached to all composite chips Figure 4 12C sig
12. fer digital audio signal dealer one CPU with 32 bits one video input output unit and one system control unit Depending on the function it can use SDRAM of 8M or 16M The following is the ES7010 interior diagram control py output data Video Video Main CPU jack GPIO SDRAM input unit output unit Saved data input unit Interior CPU f Serial interface data Time clock jack unit signal R wits PLL Video encoding Serial interface control wy Encoding transfer Audio digital R Audio input signal dealer eset signal System control unit Figure 2 ES7010 interior diagram ES6128 exchange data with ES7010 by ISPLSI 2064 ISP LSI2064 is a logic equipment that can programme with high density It including 64 registers 32 universal I O jacks 4 special inputs 3 special time clock inputs It is integrated with input bus unit output bus unit and system bus unit The main function of ISP LSI2064 is controlling the input and output of separated I O data by software In whole system it is used for controlling and harmonize the data transfer among ES7010 ES6128 and recording chip When it loading a disc the signal of chip communicating with ES6128 When it recording a disc ISP LSI 2064 controlling the communication among ES7010 ES6128 and recording chip Input bus unit Big module Output circuit assemble 1 0 0 arada T023 40 i Input 0 2 Input Mutual circuit oen fe tone assemble 1 0 19 0 18 TE 4 A5 A6 A7 3 TDO INL
13. nal circuit controlled memory 24C01 X1226 video decoding composite SAA7114 TUNER in the whole system I2C signal check 24C01 SAA7114 TUNER and initialize all these chips in the process of unit power on 2C signal controlled the signal of 24C01 SAA7114 X1226 TUNER after unit worked Following figure 7 is about the signal connecting process R64 AUX0 U15 ES6128 160 R63 AUX 5 161 E 6 U13 24C01 Figure 7 12C signal connecting 5 16M FLASH software controls circuit the circuit is mainly composed by FLASH and its software The 16M FLASH controls the work of unit and the software controlling of system 16M FLASH AM29LV1600B can be re writable by disc IV Mainboard troubleshooting check flow Mainboard troubleshooting should be in the case of all groups of output voltage of power supply work normally You can confirm the troubleshooting took place on chip or on mainboard by exchanging the chip For example some chip cannot read disc it may relevant to the coherency of chip besides the problem of disc In the checking of mainboard if it can not display picture after power on you should check and measure 1 all the groups of voltage between power board and mainboard the first group voltage is GND 5V 12V GND 12V the second group voltage is 5V GND GND GND 3 3V 3 3V OFF Two groups of voltage can provide to ES6128 its voltage is 3 3V and 2 0V respectively they are transferred by REG3 and REG1 with 5V level The vol
14. tage can be outputted on the middle pin of REG The two groups of supply voltage provide to ES7010 and they are 3 3V and 2 5V respectively 3 3V can be provided directly by power board and 2 5V is transferred by REG11 with 5V level Other chips s supply voltage are 3 3V 5V 12V 12V respectively 2 Check the output of reset signal 3 If the 27MHz 24 576MHz crystal oscillator can work normally and if the frequency to every composite chip s time clock is on the normal standard Figure 8 is the sketch map of mainboard troubleshooting flow NO Test all voltage NO Test if it is shorted If it has boot including REG1 axchange REG1 REG2 Power on picture REG2 REG11 REG11 and adjust output resistance YES Test the connecting NO YES NO between ATAPI and VEEE EN Tes al oscillator Check the reset signal ES6128 and resistance A and the frequency or exchange rest IC YES YES Mystere of U15 NO Test ISP2064 and Cao cantet ES6128 PIN102 is Test R66 R82 or peripheral circuit or ihe monitor resolder ES6128 exchange ISP2064 YES NO NO Vest uie vuot signal of Resolder 16M FLASH or U28 16M FLASH exchange FLASH Check the data YES signal of NO SAA7114 and YES l RAM Resolder SDRAM and relevant has data signal resistance or exchange SDRAM Test the signal between Can recorder SAA7114 and ES6128 disc Resolder or exchange WM8739 or perpheral Test the relevant circuit NO No Test th ignal t NO SP e Signe No heck wis Check the resistance NO Test
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