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Topfield TF4000FI Service Manual Download Page 9

 

 

9

5.  Test and Repair 

   

5.1. Visual Test 

- Check whether all the connectors are plugged well. 

‘JP4’ of Main Board : power connector. 
‘JP5’ of Main Board : connector for Front Board interface 
‘JP3’ of Main Board : Connector for SMART Card sub-Board interface (optional). 

- Check whether the SMPS(power supply) has any damage. 
- Check whether the Main Board has any damage. 
- Check whether the Front Board has any damage. 

 

Summary of Contents for TF4000FI

Page 1: ...TF4000Fi Service Manual 15 March 2004 Topfield Co Ltd...

Page 2: ...iver may incorporate minor changes in detail from the information contained in this manual Warning These servicing instructions are for use by qualified personnel only To reduce the risk of electric s...

Page 3: ...No picture but the OSD works 11 5 2 7 No picture and no OSD and No sound 11 5 2 8 No sound and good picture 11 5 2 9 No picture and no OSD and good sound 11 5 2 10 No sound and or no picture on the RF...

Page 4: ...othocoupler IC 17 5 5 5 Check the Fuse 17 6 PIN description of The Major Parts 18 6 1 Main Board 18 6 2 Front Board 18 6 3 SMPS 18 7 Schematic Diagrams 19 7 1 Schematic diagram of Front Board 19 7 2 S...

Page 5: ...t be disconnected from the mains plug before it is opened 1 2 The capacitor inside the SMPS power supply can hold charge even if the IRD has been disconnected from the mains plug To handle SMPS wait u...

Page 6: ...nt part 6 SDRAM U12 K4S641632D Main system memory Or equivalent part Rs232 Driver U13 MAX232 Rs232 level conversion Or equivalent part Connector P1 D SUB Connector for RS232 Connector JP2 TOTX178A S P...

Page 7: ...7 3 Block Diagram of The IRD Front Board Main Board Power Supply SMPS Cinch for AV RF modulator RS232 5V Control signal TUNER 30V 22V 17V 15V 8V 3 3V GND SPDIF...

Page 8: ...Program Download Port RS232 EEPROM 24LC02 TUNER VCXO Connector for Manufacture Cinch output System Control ASIC TF301SC15 AV Control RF Modulator LNB power 22khz generator IIC bus for RF modulator II...

Page 9: ...Main Board power connector JP5 of Main Board connector for Front Board interface JP3 of Main Board Connector for SMART Card sub Board interface optional Check whether the SMPS power supply has any dam...

Page 10: ...it is sensor problem Check the PCB pattern of Front Board Check the power of U1 sensor Replace the sensor 5 2 4 Key of the front panel have problems Possible Cause How to Check How to repair 1 If the...

Page 11: ...nal level and signal quality of the information bar will be good 5 Channel Data path problem There is good RF signal level and good signal quality but no broadcasting is scanned In this case it may be...

Page 12: ...al and horizontal Possible Cause How to Check How to repair 1 LNB power off is selected in the menu Check the LNB menu Set the LNB power to ON 2 U3 LNBP20PD or related circuit has problem Test the Mai...

Page 13: ...ace the SMPS And check it again 5 3 2 Reset After power on by the Front Board reset circuit works U8 is a voltage detector If the voltage of 3 3V is lower than 2 7V its output goes to low The nRESETIN...

Page 14: ...ty In this case replace VCXO1 with new one Check point 1 Check the input and output of F1 All of them should have 27Mhz clock signal If F1 3 have not 27Mhz clock signal it may the problem of VCXO1 Che...

Page 15: ...OFF OFF Different system ID The model of the receiver and the program or data to be downloaded is not matched 5 3 5 LNB power U3 5 is the control signal for selecting vertical or horizontal At vertic...

Page 16: ...e signal should be work If it does not work well the IBM39STB02100 U5 may have problem 5 3 8 Audio Check point 1 Check audio output of Chinch and RF modulator If only on of them has problem check its...

Page 17: ...ower than 10ohm it is the problem Replace it with new one Same part should be replaced Diodes is named as Dxx or ZDxx ex D1 ZD1 To measure the resistance you must remove the mains plug 5 5 3 Check the...

Page 18: ...39VF800A EEPROM U11 24LC02B SN SDRAM U12 K4S641632D Reset IC U8 ELM9727NBA Regulator U14 LD1117ADT18 Regulator U15 MIC39100 2 5BS Regulator U16 78L12 RS232 Driver U13 MAX232 Audio DAC U18 UDA1334TS RF...

Page 19: ...0 12 2 3 2 2 2 4 5 6 7...

Page 20: ...ecomes too high for the heat sinking provided the thermal shutdown circuit takes over preventing the IC from overheating Considerable effort was expanded to make the LM78XX se ries of regulators easy...

Page 21: ...the overload is removed Typical ton toff value is 1200ms when a 4 7 F external capacitor is used This dynamic operation can greatly reduce the power dissipation in short circuit condition still ensur...

Page 22: ...terface to drive panel seven segment displays with time information or program generated data 1 7 Signal and I O Information 1 7 1 Signals Sorted by Signal Name Table 1 1 Signals Sorted by Signal Name...

Page 23: ...1 G22 BI_DATA12 G21 BI_DATA13 F22 BI_DATA14 E23 BI_DATA15 E22 BI_DATA2 L21 BI_DATA3 K21 BI_DATA4 K20 BI_DATA5 J23 BI_DATA6 J22 BI_DATA7 J21 BI_DATA8 H23 BI_DATA9 H22 BI_OE B20 BI_READY D23 BI_RW E21 B...

Page 24: ...1_GREF_OUT A11 DAC1_VOUT3 C11 DAC1_RREF_OUT A7 DAC1_VREF_IN C9 DAC2_AGND0 B17 DAC2_AGND1 B15 DAC2_AGND2 C13 DAC2_AVDD0 C18 DAC2_AVDD1 B16 DAC2_AVDD2 C14 DAC2_AVDD3 A13 DAC2_VOUT1 C17 DAC2_CREF_OUT A19...

Page 25: ...D A14 GND A18 GND A23 GND AA3 GND AB2 GND AC1 GND AC6 GND B02 GND B22 GND C03 GND C21 GND D04 GND D08 GND D12 GND D16 GND D20 GND F01 GND F23 GND H04 GND H20 GND K01 GND K23 GND M04 GND M20 GND P01 GN...

Page 26: ...AC23 GPIO0 AC2 GPIO1 Y6 GPIO10 R2 GPIO11 V4 GPIO12 W3 GPIO13 B10 GPIO14 D10 GPIO15 B9 GPIO16 D6 GPIO17 C5 GPIO18 A4 GPIO19 B4 GPIO2 AB5 GPIO20 A3 GPIO21 C4 GPIO22 B3 GPIO23 A2 GPIO24 K22 GPIO25 Y22 G...

Page 27: ...RW_TRST Y3 SC0_CLK AA9 SC0_DETECT AB4 SC0_IO AB8 SC0_RESET AC8 SC0_VCC C20 SC1_CLK R21 SC1_DETECT T22 SC1_IO D22 SC1_RESET T23 SC1_VCC A21 SD0_ADDRESS0 M3 SD0_ADDRESS1 M2 SD0_ADDRESS10 T2 SD0_ADDRESS...

Page 28: ...SD0_DATA2 D3 SD0_DATA3 D1 SD0_DATA4 F4 SD0_DATA5 E2 SD0_DATA6 E1 SD0_DATA7 F3 SD0_DATA8 F2 SD0_DATA9 G3 SD0_DQMH L2 SD0_DQML L1 SD0_RAS K2 SD0_WE K3 SD1_ADDRESS0 AA17 SD1_ADDRESS1 AB18 SD1_ADDRESS10...

Page 29: ...13 SD1_DATA11 AB13 SD1_DATA12 AA13 SD1_DATA13 AB14 SD1_DATA14 AA14 SD1_DATA15 Y14 SD1_DATA2 AB9 SD1_DATA3 Y10 SD1_DATA4 AA10 SD1_DATA5 AB10 SD1_DATA6 AB11 SD1_DATA7 AC11 SD1_DATA8 AB12 SD1_DATA9 AC12...

Page 30: ...2 May 31 2002 IBM Confidential Product Overview Page 51 of 890 VDD Y11 VDD Y13 VDD Y15 VDD2 D05 VDD2 D07 VDD2 D17 VDD2 D19 VDD2 E04 VDD2 E20 VDD2 G04 VDD2 G20 VDD2 U04 VDD2 U20 VDD2 W04 VDD2 W20 VDD2...

Page 31: ...SUBSTRATE Cu STIFFENER 304X 0 0 15 SOLDER BALL C 0 30 0 10 C A B M GLOB TOP IBM P N XXXXXXX Date Code IBM39 STBx25xx xxx xxx PowerPC Digital Set Top Box Integrated Controller ZZWWMMMM Bottom of Packag...

Page 32: ...19 20 21 22 23 24 A16 NC VSS DQ15 DQ7 DQ14 DQ6 DQ13 DQ5 DQ12 DQ4 VDD DQ11 DQ3 DQ10 DQ2 DQ9 DQ1 DQ8 DQ0 OE VSS CE A0 48 47 46 45 44 43 42 41 40 39 38 37 36 35 34 33 32 31 30 29 28 27 26 25 360 ILL F01...

Page 33: ...ed as 128 256 512 1024 2048 words of 8 bits each The device is optimized for use in many industrial and commercial applications where low power and low voltage operation are essential The AT24C01A 02...

Page 34: ...ss Row column addresses are multiplexed on the same pins Row address RA0 RA11 Column address CA0 CA7 BA0 BA1 Bank select address Selects bank to be activated during row address latch time Selects bank...

Page 35: ......

Page 36: ...C LD1117V25C LD1117F25C 2 5 V LD1117S28 LD1117D28 LD1117DT28 LD1117V28 LD1117F28 2 85 V LD1117S30 LD1117D30 LD1117DT30 LD1117V30 LD1117F30 3 V LD1117S30C LD1117D30C LD1117DT30C LD1117V30C LD1117F30C 3...

Page 37: ...4 MIC39102 Adjustable SOP 8 M Pin Description Pin No Pin No Pin No Pin Name Pin Function MIC39100 MIC39101 MIC39102 1 1 1 EN Enable Input CMOS compatible control input Logic high enable logic low or o...

Page 38: ...5ABD L78L18CD L78L18ACD L78L18ABD L78L24CD L78L24ACD L78L24ABD L78L33ACZ L78L33ABZ L78L05CZ L78L05ACZ L78L05ABZ L78L06CZ L78L06ACZ L78L06ABZ L78L08CZ L78L08ACZ L78L08ABZ L78L09CZ L78L09ACZ L78L09ABZ L...

Page 39: ...C2 C1 VCC 5k DIP SO 18 17 16 15 14 13 12 11 1 2 3 4 5 6 7 8 SHDN VCC GND T1OUT C1 V C1 N C EN R1IN R1OUT T1IN T2IN T2OUT V C2 C2 10 9 R2OUT R2IN MAX222 MAX242 20 19 18 17 16 15 14 13 1 2 3 4 5 6 7 8...

Page 40: ...upply voltage VSSD 5 digital ground pad digital ground SYSCLK 6 5 V tolerant digital input pad note 1 system clock input SFOR1 7 5 V tolerant digital input pad note 1 serial format select 1 MUTE 8 5 V...

Page 41: ......

Page 42: ...ame the epoxy package is designed as IR filter The demodulated output signal can directly be de coded by a microprocessor TSOP48 SB1 is the standard IR remote control receiver series supporting all ma...

Page 43: ...TSOP48 SB1 Vishay Telefunken Rev 6 29 Mar 01 www vishay com Document Number 82108 6 7 Dimensions in mm 16777...

Page 44: ...ator under voltage lock out leading edge blanking optimized gate turn on turn off driver thermal shut down protection over voltage protection temperature compensated precision current sources for loop...

Page 45: ...table regulator series with a guaranteed thermal stability over applicable temperature ranges The output voltage may be set to any value between VREF approximately 2 5 volts and 36 volts with two exte...

Page 46: ...19 7 Schematic Diagrams 7 1 Schematic diagram of Front Board see next page...

Page 47: ...ovember 03 2000 Title Size Document Number Rev Date Sheet of REMCON LED2 LED0 LED0 LED1 LED2 KEYIN1 KEYIN2 KEYIN0 REMCON KEYIN1 KEYIN0 KEYIN2 LED1 5V 5V 5V 5V S2 TACT S3 TACT D1 LED 2 1 JP1 5267 9A 1...

Page 48: ...20 7 2 Schematic diagram of Main Board see next page...

Page 49: ...25V BC4 0 1uF C4 470uF 6 3V R4 100 C8 0 1uF 50V 2012 C1 100pF R3 100 C10 4 7uF BC3 0 1uF U2 LM7805 with Heat sink 1 2 3 4 VI GND VO HS BC1 0 1uF R8 X 4 7K L3 BEAD 601 2012 500mA C11 X 10uF 16V SMD 32...

Page 50: ...GPIO3 MD1 MODEL_ID1 KEY_IN2 MODEL_ID2 GPIO17 GPIO10 GPIO21 GPIO5 GPIO30 GPIO28 GPIO31 3 3V 5V 3 3V 3 3V R44 X 100 R29 10K R39 2 2K R28 2 2K R10 2 2K R20 2 2K R38 2 2K R16 10K R34 2 2K R43 X 100 R12 2...

Page 51: ...S22 BI_ADDRESS23 BI_ADDRESS24 BI_ADDRESS25 BI_ADDRESS26 BI_ADDRESS27 BI_ADDRESS28 BI_ADDRESS29 BI_ADDRESS30 BI_ADDRESS31_WBE1 BI_DATA0 BI_DATA1 BI_DATA2 BI_DATA3 BI_DATA4 BI_DATA5 BI_DATA6 BI_DATA7 BI...

Page 52: ...2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 IO0 IO1 IO2 GND IO3 IO4 IO5 IO6 VCC IO7 GND IO8 IO9 IO10 IO11 GND VCC IO12 IO1...

Page 53: ...0 MD6 3 3V 3 3V 3 3V 3 3V 3 3V 3 3V U11 24LC02B SN 8 7 6 5 1 2 3 4 VCC WP SCL SDA A0 A1 A3 GND BC34 0 1uF U10 SST39VF800 29LV800BA 25 24 23 22 21 20 19 18 8 7 6 5 4 3 2 1 48 17 29 31 33 35 38 40 42 44...

Page 54: ...3V BC38 0 1uF U12 K4S641632 23 24 25 26 29 30 31 32 33 34 22 35 2 4 5 7 8 10 11 13 42 44 45 47 48 50 51 53 39 15 16 17 18 19 38 37 1 14 52 46 12 6 3 9 43 49 28 41 36 20 21 27 54 40 BA0 BA1 BA2 BA3 BA4...

Page 55: ...4 0 47uF 2012 U13 MAX232ACPE 11 10 12 9 1 3 4 5 14 7 13 8 2 6 16 15 T1IN T2IN R1O R2O C1 C1 C2 C2 T1O T2O R1IN R2IN V V VCC GND JP3 X 5267 10A 1 2 3 4 5 6 7 8 9 10 R90 2 2K R92 10K R86 4 7 BC41 0 1uF...

Page 56: ...18 1 2 3 GND VOUT VIN C41 220uF 6 3V C42 100uF 16V BC44 0 1uF R95 0 2012 C31 100uF 30V C33 0 1uF 50V 2012 BC43 0 1uF BC47 0 1uF C30 0 47uF 2012 C36 0 1uF 50V 2012 D3 1N4001 1 2 U15 MIC39100 2 5BS 1 2...

Page 57: ...2 13 14 15 16 1 2 3 4 5 6 7 8 L3MODE L3CLK TEST VREF VDDA VOL VSSA VOR BCK WS DATAI VDDD VSSD SYSCLK APPSEL L3DATA BC48 0 1uF BC51 0 1uF BC50 0 1uF C43 47pF R97 22K R99 22K R96 68K BC53 X 0 1uF R101 5...

Page 58: ...A 12VA 12VA 5V 5V R110 1K R111 2 2K C50 470uF 6 3V R109 47K D8 KDS226 2 3 1 J1 RCA3PIN_HOR 1 2 3 4 5 6 C53 4 7uF 16V R103 300 C56 470pF C52 75pF Q2 KST4403 2 1 3 R114 1K L13 1 8uH C55 4 7uF 16V D7 KDS...

Page 59: ...Date Sheet of RFAUDIO RFAUDIO RFVIDEO 5V_RF 12VA 8VS 5V U21 RMUP74055AB 3 2 5 1 6 7 8 9 4 10 AUDIO VIDEO SDA MB SCL GND0 GND1 GND2 BB GND3 Q4 KST4403 2 1 3 L14 X BEAD 601 R115 2 2K R117 0 R118 27K R12...

Page 60: ...OUT0 KEY_IN1 FKEYIN2 FREMIN LED1 FREMIN FKEYIN1 LEDOUT2 3 3V 3 3V 5V 3 3V 3 3V R125 4 7K C63 0 1uF U22A 74LVC14 1 2 14 7 C59 X Q5 KSR1101 2 1 3 R122 560 R123 560 Q6 KSR1101 2 1 3 R124 560 Q7 KSR1101 2...

Page 61: ...21 7 3 Schematic diagram of SMPS power supply see next page...

Page 62: ......

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