Tektronix TDS 520 Diagnostic And Repair Manual Download

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Summary of Contents for TDS 520

Page 1: ...perform any servicing unless you are qualified to do so Refer to the Safety Summary prior to performing any service Please check for CHANGE INFORMATION at the rear of this manual Part No 070 8313 00 P...

Page 2: ...an often be done very reasonably in consideration for adding your manual to our library Typically the scans in our manuals are done as follows 1 Typed text pages are typically scanned in black and whi...

Page 3: ...GIVEN BY TEKTRONIX WITH RESPECT TO THIS PRODUCT IN LIEU OF ANY OTHER WARRANTIES EXPRESS OR IMPLIED TEKTRONIX AND ITS VENDORS DISCLAIM ANY IMPLIED WARRANTIES OF MERCHANTABILITY OR FITNESS FOR A PARTICU...

Page 4: ......

Page 5: ...2 Figure 9 16 TP904 PC1 Vol 2 9 8 Vol 2 Figure 9 17 TP905 PC2 Vol 2 9 8 Vol 2 Figure 9 18 U601 pin 3 PC7 Vol 2 9 8 Vol 2 Figure 9 19 Analog Holdoff Trou shC oting Procedure Vol 2 9 9 Vol 2 Figure 9 2...

Page 6: ...quisition Waveforms Vol 2 9 40 A11 DRAM Processor Display Vol 2 Figure 9 50 Bdsack Troubleshooting Procedure Vol 2 9 42 Vol 2 Figure 9 51 BootROM Control Troubleshooting Procedure Vol 2 9 43 Vol 2 Fig...

Page 7: ...et Vol 2 9 70 Vol 2 Figure 9 88 Kernel Dsack Signals Vol 2 9 71 Vol 2 Figure 9 89 Kernel Dsack Troubleshooting Procedure Vol 2 9 71 Vol 2 Figure 9 90 Kernel RAM Troubleshooting Procedure Vol 2 9 72 Vo...

Page 8: ...24 Front Panel LED Test Loop Troubleshooting Procedure Vol 2 9 101 Vol 2 Figure 9 125 Front Panel Mux Test Loop Waveforms Vol 2 9 102 Vol 2 Figure 9 126 Front Panel Mux Test Loop Troubleshooting Proce...

Page 9: ...Q6 Gate Drive Wavefonns Vol 2 9 122 Vol 2 Figure 9 145 FEr DRIVE Wavefonn Vol 2 9 122 Vol 2 Figure 9 146 Low Voltage Power Supply Troubleshooting Procedure Vol 2 9 123 Vol 2 Vol 2 Figure 9 147 Main C...

Page 10: ...rter Control Waveforms Vol 2 9 138 Vol 2 Figure 9 162 A19 Power Factor Control Board Vol 2 9 139 A19 Power Factor Control Component Locator Vol 2 9 140 A20 CRT Driver Vol 2 Figure 9 163 Display Distor...

Page 11: ...A10...

Page 12: ...dure No There is not a prOblem with the A15 AttenuatOf Board Programming TDS 520 Component Level Diagnostic and Repair Manual Do the signals look like those shown in Figure 9 1 Scans by Artekmedia 201...

Page 13: ...ing SOlXce or the trigger hoIdoff is too long No the SROA Sf 2A SROB SR2B and HOLDOFF1 4 signals co see Tables 9 1 and 9 2 Check and repair Ul551 U1552 and associated circuitry Is the data correct See...

Page 14: ...ll Other Combinations Vol 2 Table 9 3 Trigger CD Signal BH nigger Mode 7 6 5 4 3 2 1 DC 0 0 0 0 o o o AC HF Reject 0 0 0 0 o 0 IF Reject 0 0 0 o o o IF Reject 0 0 0 o 0 HF Reject 0 0 0 o o o AC HF Rej...

Page 15: ...4 01 Bus board ooonections and USOO The Acquisition PI stY Is ok IDS 520 Component Level Diagnostic and Repair Manual I U600 pin 8 at 5V and U600 pin 7 at g No Ched and repair the associated circuitry...

Page 16: ...ify the oscilloscope setup pins 23 24 82 and 83 01 the AID converter 250 MHz ECL clocks Replace the NO converter No Perfoon the Clock System troubleshooting procedure TOS 520 Component Level Diagnosti...

Page 17: ...and associated components TDS 520 Com ponent l evel Diagnostic and Repair Manual No y Do the voltage at U900 pin 9 chance about every 60 ls and stay within the 10 24 V range Ye Check and repair U905...

Page 18: ...1 Stopped 15 Acquisitions I I i 1 _ _ J I T en l 2 00 V r i I r 1 1t tHL t _H_ i uujJ 11 1 J 84m Vol 2 Figure 9 10 TP906 pe3 _ TP907 PC4 and TP90B peS are similar Stopped 80 Acquisitions I r f T j l _...

Page 19: ...lJ lS 1 M10 0 0j t Ch1 J 2 24 mV I Vol 2 Figure 9 16 TP904 PC1 Stopped 64 Acquisitions Chl 2 00 V T f I t 6 iioi as til 44 15 r t _ J 1 O l106 o j Ch l I 224mV I Vol 2 Figure 9 17 TP905 PC2 Scans by A...

Page 20: ...and UI 5018 to MTHO Check and repair 01543 01531 RI 54S UI502 and associated circui1ly NO Iu both the slow range 10 ms and the fast range 10 ms ok MTHO toggles in the No Check and repair the HOLDOFF4...

Page 21: ...1s 1000 JIs 10000 j ls 50 s 500 jJ s 1000 j lS 20 s 200 jJ s 1000 IJ S 10 IJ s 100 jJ s 1000 J 1s 5 S 50 J 1s 100 J 1s 2 s 20 s 100 IJ s 1 J Ls 10 J 1s 100 J ls 500 ns 5000 ns 10000 ns 200 ns 2000 ns...

Page 22: ...in 12 01 Trigger A the proper ampitude and frequerlC N o the trigger select N O I Check and repair the control circuitry Ones correct see U620 U621 and U628 and the connection Is Ul 552 pin 16 0 0 V 1...

Page 23: ...o the start of this troubleshooting procedure Remove Pl200 I the center conduct 01 Pl 200 a 50 mV 1 MHz sine wave No r Repair the A15 Attenuator Check and repair the AID Converter reference voltages a...

Page 24: ...ove Pl100 Return to the start of this trouble hOOting procedure Is the center No oonductof 01 Pl100 a Repair the A15 50 mV MHz sine Atlenualor wave Check and repair the AID Converter reference voltage...

Page 25: ...log DA C Control troubleshootng pnx edure for TLC trigger level lor Trigger C Check Ul800 Rl824 Rl 825 R1S01 Rl804 R1S05 RI806 and the power supply voltages lor the trigger Circuitry pins 8 and 9 of U...

Page 26: ...ure No Check and repair feedback loop for VREFA U751 R764 C764 0758 CR156 L758 etc I TPl203 within t 1 71 V TPl202 within _ ol 71 V U1202 pin 8 50mVDC CheCk and repair Rl204 Rl203 R1202 R1212 Of ll201...

Page 27: ...problem Check the AID converters IS Yes R714 C714 0708 CR706 l708 etc IS Yes TPl l02 within 1 71 V Ul102 pin 14 50 mVDC Cheek and repair AII04 A1103 Rl 02 R1112 or Ll101 No Troubleshoot FOFFSET2 using...

Page 28: ...ithin 0 2 V01 specification y Roplace Acquisition CIoc K Buffer lJ501 or U502 I U504 pin 13 see Figure 9 29 a 10 MHz ECl clock ChtlOk U503A and associated components Check Y501 and associated compone...

Page 29: ...jL __ 1t Ch i 20 0m T Vol 2 Figure 9 29 10 MHz Loopback to the veo U504 pin 13 TP514 is the Same Signal but TTL Levels TDS 520 Component Level Diagnostic and Repair Manual Vol 2 Figure 9 27 Clock Sys...

Page 30: ...Is to check for a signal at TP1013 Perform 1he Logic T ger Troubleshooting proc edU lI TOS 520 Component level Diagnostic and Repair Manual Scans by Artekmedia 2011 BEVENTl No Perform the Analog Trigg...

Page 31: ...g _ diagnostic filii Did the digAcqMemPatDiag diagnostic fail Set Horizontal SCALE to 20 ns N O__ I per division Sel oscilloscope for no triggers Address is changing every 32 ns Check and repair demul...

Page 32: ...0 ns per division No Check and repair ttle 01 bus data path Since all demultiplexers are in parallel on the 01 bus a single demultiplellef with problems here means lifted 01 bus pins or a d demultiple...

Page 33: ...the main and pop up menus Set Trig When Upper Limit and Lower Limit to 2 ns Select CLASS Glitch and Filter ON from the main and pop up menus Move the 10MHz clock signal to the CH 1 input Set the trig...

Page 34: ...70Z I L J I 0 1 j _A L Trigger on the falling edge if Polarity is set to Positive Vol 2 Figure 9 34 Glitch Triggering TOS 520 Component Level Diagnostic and Repair Manual ov 4 1 V 3 5V Vol 2 Figure 9...

Page 35: ...n to 0 Set TYPE to logIc Note from the Trigger Logic and Delay Trigger troubleshooting procedures we know that both the main and delay triQQefS worle No Note from the Trigger Logic and DeUy Trigger tr...

Page 36: ...nd it should slew up in 3 ns to 10 ns Does the ramp slew down too last No Doe the ramp look ok see Figure 9 36j No Ye Ul601 U931 U933 U934 and associated circuitry Check and repair Ul601 and associate...

Page 37: ...tworks should attenuate ECL signats by about 2X Repair the analog triggers Set Is MTHO horizontal Is MTHO No TP1072 high No SCALE to less than No Press HORIZONTAL MENU Timebase and TPl072 low for more...

Page 38: ...e A15 Attenuator and the probe interlace flex circuit Perform these sleps for each vertical input Note the acqCheckProbes diagnostic reads the Have you checked the right most vertical input Yes probe...

Page 39: ...c and Repair Manual Scans by Artekmedia 1011 2 TP1068 C2l1 0 C213 I I a GP5l9 TP517 I II I C527 GP517 OP513 1 11 1 Iil g g I il II 1 0 G 12a I D CR D I II II II I I J bo GP502 GP50 i___ 11 U200 I I II...

Page 40: ...1626 C 00 0 000 I3 QJ RB03 tI A604 f R162t C1 0 0 0 0 R605 o R1648 00 00 R607s R608 C1629 00 5 00 R602 0 Al605 8 U630 I Al604C192 0 0 0 0 R606 t C1OO7 00 00 ti0 Q g R153 00 0 0 GJJ R1627 Cl009 0 0 0 0...

Page 41: ...r TDS 520 Component Level Diagnostic and Repair Manual Scans by Artekmedia 2011 I 2 COMPONENT NUMBER EXAMPLE C npOIMI II NOIII _ _ _ _ _ _ R STAne l SENSITIVE DEVICES Vol 2 Figure 9 43 A10 Acquisition...

Page 42: ...Rl540 C 620 en lR 636_80000000000000 g en I ld Pi O _ _ J cL t R1632 J1153 c1 t c c L1620 Ql2Q gAl617 I R1526 en _ _ CR1525 1 1 RJ Q 2 d J C161Q s C1529 C1191 t _ 3 R1525 w W TP16 6 Rl50 e g TPl503 0...

Page 43: ...t Level Diagnostic and Repair Manual Scans by Artekmedia 2011 2 COB 0 R625 C660 R623 0657 R620 R619 A617 A6l8 C658 R622 0 Al023 0 C665 00 0 0 00 o C659 R10SS Rl052 H D Rl042 Cl 0S3 Rl043 r L1000 0 C55...

Page 44: ...00 0 o s 0 0 0 0 R543 C552 0000 0 0 C553 oRl89 C202 C105 r _ 0 R290 0 R291 C29ii C1IlO C1 L A191 00 R450 Rl90 e 00 R452 00 0 Cl01 c 00 C542 R451 00 COMPONEHT NUMBER EXAMPLE 0 00 00 A23 A2 R1234 00 JT...

Page 45: ...70 o C1S70 Rl533 o Al545 o O 0 RI800 o _ Al8l1 o RI809 Rla2 RlS01 Rl824 Rl803 CI53 C152 ClS1 CI50 R639 0644 Rl800 el801 00 00 R1B02 RlSlO R1825 Rl5530 C1802 C1551 o Cl550 00 A631 00 00 00 00 00 00 00...

Page 46: ...0S BZQ 4 C702 l702 L703 C7Q4 Ai170 C707 R125 Rlt6 00 000 AltS R123 13 11 4 C1590 R1590 e727 L701 C70t A122 00 C726 00 00 00 00 00 00 00 00 00 00 e735 Rl2 e72s R732 R731 R726 A725 A120 0 0 At B119 A72t...

Page 47: ...A10 4 AlO 17 el 50 AID G c C1705 AIO_II m 0 cros A C I 00 C702 A10 em AIO 17 D CI551 Al 9 C C17OO AlO l1 e CM Alo l C7OJ 11 10 4 0 C Al0 13 C CI552 11 10 17 C C1708 AIO ll m 2O C207 A10 1 00 C7 4 11...

Page 48: ...0 14 A F l00 00 oc 10 3 A 0 11 50 2A GP513 AIO I4 OD U 11 A1D 4 101 oc A A1D 3 Re17 1 10 11 GP514 A10 14 t71Z A P I02 C A AI0 3 Fl618 11 11 A AIO 17 L713 A m A1D 4 oOC AID 3 11619 AHI 11 GP516 0 17 L7...

Page 49: ...Al 1 2 AID 12 x 0 7 1 1722 AIO l1 e AIO_3 10 12 A10 12 R1626 AI0 7 111723 AID II 2C m AIO 3 AI0 12 58 RI525 AIO I2 1 3C AI0 7 1 1124 AIO Il 2C TP219 Al 3 A10 12 2C AIO I2 X RI628 A10 7 R112S AID ll A...

Page 50: ...I 17 x AlO 12 ac A10 11 x oc U101D 50 Al0 13 x A10 17 x A10 5 A10 3 00 AIo ll AIo 13 oc x TPlrol AIO l U212 1J151A Al0 3 U17 11 AIl l1 x AIO 13 oc AlO l U213 AI0 5 1J1518 A10 3 UI103 All ll x AIO 13 0...

Page 51: ..._ j _ _H j_ _ f_ _ 1 r 1 1 uuv 20 0mVG Stopped 8373 1 i r r r T Acquisitions I M l uups l n J Lllum I Input 1 EEVENT U1702 pin 22 ED EEVENT U1703 pin 23 AEVN11 U1552 pin 20 t Glitch Trigger Stopped 3...

Page 52: ...A11 Scans by ArtekMedia 2011...

Page 53: ...rmface troubleshooting procedure Ye Are Ul 340 pins 1 and high a and repair U1340 and U126 No No the Keme Osack troubleshooting prooadure Is U1051 pin l Siow Yes RepoJ any paths between U1051 pin 16 a...

Page 54: ...three bytc should be 20 7F and FF Ul001 and Ul082 Do occur on Ul331 No Check and repair the data bus attached to the outputs of Ul33 pins 13 15 and 17 211 PIaoe jumpers on J4S and J46 set SI001 to 00...

Page 55: ...k and repair U1082 pins 1 and 3 and associated circuitsy N o I r lbl to Checi and repair e No Ul049 and the trigger on Ul052 path from Ul049 pin going low pin 13 to Ul052 Chang fle Ul052 pin trigger t...

Page 56: ...sociated circuitry and or pertorm the DRAM Control troubleshooting procedure Check and repair Ul048 and No associated circuitry See Table 6 2210 thi PAL s equations The equations of interest for a byt...

Page 57: ...The software is laulty Retum the oscilloscope to the lactory lor service TOS 520 Component Level Diagnostic and Repair Manual y Scans by Artekmedia 2011 Is J23 pin toggling y NO Perform 1he BootROM tt...

Page 58: ...s the hel number just decoded from U1189 pin 2 5 This loop does not halt if a bus error occurs Pro Using the bus error circuitry and compare to Figure 9 55 Do the signals kxlk the same No PrObe Lh26 p...

Page 59: ...U1178 pin 11 go loW No when power is cycled y Check and repair the path from U1178 pin 11 to Ul057 pin 1 It is either a data bus Of BootROM problem Check the data bus Yo attached to the outputs of Ul0...

Page 60: ...during the time the trigger is Check and repai the path from U1069 pin 6 to Ul097 TDS 520 Component Level Diagnostic and Repair Manual Yes Doe Ul069 pin 19 appear similar to the waveform in F tgure 9...

Page 61: ...heck and repair Ul069 See Table 6 23 for this PAL s equations lOS 520 Component Level Diagnostic and Repair Manual No No Check and repair U1055 This signal should stay low throughout the dsplmplicitBu...

Page 62: ...gnostic and repair any problems with Ul046 and Ul047 Per10rm the DUART troubleshooting procedure Per10rm the FIFO troLbleshooting p OCedureo I Using the cpuOiagAJllnts each intemJp getting asserted at...

Page 63: ...e 36 pin 1 high y Con you trigger on U11 36 pin 11 gel high No No Ql9Ck and repair path from 03 Xl 3 toU 36 No Dleck and repair U1178 and associated circuitry Yes Check and repair OSt and RZ016 R2023...

Page 64: ...2011 U1069 pin Trigger U1069 pin 18 U1069 pin 6 UllS0 pin 8 U1069 pin 5 Stopped 2 Acquisitions 4 M sons Ch I J Ch3 5 00 V Ch4 5 00 V 5 00 V SO Ons oom Vol 2 Figure 9 64 U1 069 Signals When the CPU Req...

Page 65: ...uts to Ul015 should all be low N Ul072 pins 16 and 13 alternately toggling while the trigger is low Check and repair the paths from Ul072 pins 16 and 13 to Ul007 and Ul0l4 or Ul00B and Ul 09 Is Ul083...

Page 66: ...e 6 1 8 for this PAL s equations Check and repair the data bus on the output pins 01 U1S2 No No No No Check and repair Ul072 pin 12 81ld associated cirt uiby Check and repair Ul083 pins 5 and 15 Done...

Page 67: ...out the access Perform the DRAM Dsack troubleshooting procedure No N o Perform the Display Dsack troubleshooting procodure I the DSP Utrn7j being accessed Ye 00 Ul054 pins 1 and 4 stay low throughout...

Page 68: ...e the address and data pins on Ul004 UHX 6 during tile time the trigger signal is low Also look at these same signals on Ul097 to verify they are connected Does there seem to b contention on 1he TSIA...

Page 69: ...o U1 179 NO le t le cpuMiscReg does nol exercise this pin so there covld be a problem with U1 179 and or 024 TDS 520 Component level Diagnostic and Repair M anual Scans by Artekmedia 2011 The OSP dsac...

Page 70: ...iagnostic and Repair Manual No S uck ats bus contentions and or sigws tiC d together Also check and repair TSIA 12 1 Ul00 pin 8 high Check and repair No Ul 00 and associated circuitry Run the dsplnstr...

Page 71: ...N O Ull33 excepllor Check and repair all the imerrupt mask OR gates U1322 Ut017 UII30 and U109 and the paths from those circuits to Ut133 and Ul093 VERTI NT y 0 U1133 pin 8 Yes going high in response...

Page 72: ...Ul072 is not enabled causing a contention wtttr Ul084 Are Ul084 pins 7 and 8 toggling when Ul084 pin 19 is low No pins 58 66 and 99 of Ul097 togging when U1084 pin 19 is low Check and repajr Ul084 Ch...

Page 73: ...lrU1114 pins 8 13 high y Trigger on Ul 10 pin 48 going low Cycle power and run the cpuDRAMmem I there at least Yes 65 ms between the first end second triggers No Run the cpuDRAMlnit in a loop This dia...

Page 74: ...ure 9 76 U111 0 Bus Interface Signals l DS 520 Component Level Diagnostic and Repair Manual Scans by ArtekMedia 2011 U1114 pin fJ DRAM U1118 pin 4 RASIO 3 U1 118 pin 23 CAS D 3 U1118 pIn 9 MAO this si...

Page 75: ...circuitry Ace Utl l pirs3 and 6 both toggling Scans by Artekmedia 2011 No RepairUll11 Trigger on U1Q55 pin 0 going low The DRAM signals typically look like Figure 9 78 However the signals resemble Fig...

Page 76: ...THIS PAGE IS MISSING FROM THIS COPY IT WILL BE REPLACED BY ARTEKMEDIA AS SOON AS WE CAN LOCATE A COPY...

Page 77: ...stics again to locate the problem Check and repair Ul074 Trigger on U1 l96 pin 5 going low Trigger on U1074 pin 18 Y es ____________________ going low Is Did the cpuOiagFIFOMem diagnostic fail when ac...

Page 78: ...OS pin S Yo Does he data pattern on U130S pins 11 17 and 19 match the pattem 55 programmed during the write cycle Note U1305 pin 19 is the most significant bit ignore the way the Ie is labeled in the...

Page 79: ...The board to register is ok No Ok the LED nash anything Intelligible Set SI001 to 0010 000 and C CIe power Enlef 1he emulator mode and type in the command rb OEO 0000 c ros 520 Component Level Diagno...

Page 80: ...epair U1058 and Ul049 Trigger on U1331 pins 22 and 24 Yes ANCed together going low look at L J the output pins of U1321 vou will have to cycle poWer repeatedly to make these measurements No Per10rm th...

Page 81: ...Kernel Control Signals Stopped 2 Acquisitions i mV Trigger level j iw1t 1 U1331 pin 32 Vee Q3 pin 3 Reset I o t T I n1 luumv I lil j il uuv M luums Ln l J Vol 2 Figure 9 87 Reset lOS 520 Component Lev...

Page 82: ...ocedure N o No Perform the Bus Control Register 0 procedure Check and repair Ul340 and the path from Ul340 pin 6 to J23 No Make sure that R64 is Check and repair he paths from Ul051 pin 16 to Ul340 pi...

Page 83: ...U1336 is fine Some other circuit is probably trying to drive the kernel data kles when it should not Check all other devices conoected to KD 24 31 to see iI one or more are enabled when U1336 Is Trigg...

Page 84: ...0000 8e c be This continuously wrttes aa to location 0400 0000 in the NVRAM Trigger on Un 07 pin 22 going low Is there II trigger No Check and repai Ul055 pin 11 and the path to U1107 TOS 520 Componen...

Page 85: ...situation that OIiginaJlV raused the instrument to go into standby mode it might S mpiy be toggling the ON STey button un 01 pin 3 before recreating the standby situation Does the instrument go into s...

Page 86: ...17 See Table 6 18 for this PAL s equations T _ on U64 pin 3 Are U60 pins 50 and 52 toggling No O ed repair Ul084 pins 11 and 13 Scans by Artekmedia 2011 Are U17Q N o For U17Q pin 7 check pins 7 and 8...

Page 87: ...1hen Rl59 shOuld be on the board Repair any errors on Ul00 s data outputs and or address fines RSO AS and RS2 Run in a loop 1he dsyDiagRamdacRegMem Trigger on Ul 90 pin 6 going low Is U190 pin 6 acti...

Page 88: ...low Is there a trigger y Random dOl mode should not be jailing Run the Display diagnostics to find the problem Check and repair the path rOlT lJ60 pin 45 to U55 pin 1 Be sure that U l pin 45 also con...

Page 89: ...ce pins 1 01 U45 and U46 active No Check and repair U 083 pins 5 and 5 Does the diagnostic indicate thai there are address bus errors Run the dsyDiagAasAegAddr diagnostic and repair any problems No Yo...

Page 90: ...nd or signals tied together on US9 pins 20 24 Since there is no predictable pattem on these outputs you need to observe them for a while Look fOf lines that never change stale or thaI always switch at...

Page 91: ...6 Low VcHlage Power Supply Yes Module Isolation troubleshooting procedure in the A16 Low Voltage Power Supply part 01this section TDS 520 Component Level Diagnostic and Repair Manual Is 03 pin 3 simil...

Page 92: ...ent Level Diagnostic and Repair Manual pins 14 and 24 01 U71 and V72 toggling whHe pins 13 of U71 and U72 are active and while pins 1001 U71 un Check and repair UTI and un N o Check and repair Ul80 pi...

Page 93: ...es U1332 pin 11 go k w No Does No Be sure U1190 U1190 pin 6 _ pins 2 and 4 are go lOW connected to VCC y Check and repair U1 54 U1177 and U1 176 All outputs of U1 177 should be high except pin 5 Who U...

Page 94: ...uations lOS 520 Component l evel Dlagnos1ic and Repair Manual Scans by Anekmedia 2011 U39 and U40 pins 20 toggling No Check and repair the j patns from Ut71 pin 1 1 to U39 and U40 Check and repair U 7...

Page 95: ...Check and repak UIS2 pin 14 and or US pi 21 A pins 12 01 U 12 U115 active Check and repair the paths Irom pins 12 of U112 Ul15 to UI90 y Although the next four questions reler only to Text Plane 0 you...

Page 96: ...itions I T J 100mV Vol 2 Figure 9 105 Video Out Signal TDS 520 Component Level Diagnostic and Repair Manual Scans by Anekmedia 2011 Vol 2 Figure 9 104 Video Troubleshooting Procedure Cont Al1 DRAM Pro...

Page 97: ...1 pins 32 34 O O OorO 1 0 al he trigger Check and repalr any problems on US1 pins 32 34 due to stuck pins and or pins shorted together Are the pins low OCN v No Check and repair SP 20 22J Is UBI pin 2...

Page 98: ...c and Repair Manual N o Is Ul69 pin 23 going low No Perform the VSC Register troubleshooting procedU e 1I1is will help you repair Ul69 A Check and repair the paths trom UI69 pin 23 to U79 an l usa U60...

Page 99: ...28 pins 7 and 10 A so II9 ify that the output l of U28 U30 ruo connected to the inputs of U36 U38 Check and repair U59pin41 Check and repair USB pins 4 6 and U59pin41 TDS 520 Component Level Diagnosti...

Page 100: ...dEn l II 1 tD R63 Il D 0 0 o o OOIlO OO JIlDIl DODOllDO Ul IlDOQ lD O IlD DIlDO IlIlDOaOOCOIl ODO J HIDIl DDOOIlDDOOIl I 1 0 b 0 D 1fl l oo t J 1fl1 1 Oil DOD ODullllllOODIl D 00 11 11 1100000011011...

Page 101: ...11211 1 jjQ J44 l il I Q Q Q Q Q Q Q Q Q Q Q Q Q Q Q 9 C79 Scans by ArtekMedia 201 1 0 I 8 gOfij Q Q 5 Q U1107 Q C1 125 Q Q C1121 Q Q Q Q Q 9 J5D3 00 lilll I I I 1 o 5 Ii ll 0 0 0 0 0 0 0 0 0 0 0 0 0...

Page 102: ...UUlV g U47 g g g 0 U42 U41 C 32 C30 1 oeoooooooooo11 1 COOOOOOOO l l 1 g g lIIliHHlj HltHlit TP62 EJOOOOElOOOOO F U I3ClOOOOOOOOO 0 U 90 CL cL __ C 1 Rl58 0 U200 Ul08 C105 ee7 C86 TPS C84 C82 o R157...

Page 103: ...0 0 c C109 C1 Ci41 0 0 0 0 U170 g g o 0 U1074 0 0 TDS 520 Component Level Diagnostic and Repair Manual I II II II II II I a a a c a a U1I 69 V I I i I Scans by ArtekMedia 2011 C1242 9 Cl024 U1085 5 S...

Page 104: ...6 RI021 Al1 5 Al1 21 11 11 27 x 11 11 27 x 11 11 4 11 11 5 Al1 27 An 11 27 11 11 27 11 11 7 m 11 11_4 11 27 M 00 11 11 27 AII 27 x All _S RI028 11 11 4 0 11 27 Cl IO Al1 27 X CI240 11 11 27 0 11 3 X 1...

Page 105: ...11 26 X AII 18 X U _ All 24 All IS A e Ulll A11 3 m Al1 18 x Al 19 X U I66S AII 24 UI046 All IS UIII5D AI1 3 All IO x Al 18 UI67F 11 17 W Ul047 All_IS UII15F Al1 3 Al1 24 AII 18 U I67A 11_24 Ul048 Al...

Page 106: ...2 AI1 6 Ut 7 C A11 6 UI3220 Al1 10 UI335 A11 3 Ul341e Al 9 UI I6 1 Al1 S UU7aD Al1 e UI3ZZA 111 7 e A11 6 Ul34 1C All II Ull 4 Al1 6 Ul17Q All U13226 All_7 e U1J38A All 4 e UI342C Al 14 Ul 1 i5A All 5...

Page 107: ...ls TDS 520 Component Level Diagnostic and Repair Manual VIDEO_OUT MARGIN ffi SRLO SGTO SGTl sero sen LI sew TeK Stopped 4974 Acquisitions I r Typical video signal to the monitor Blanking period occurs...

Page 108: ...A12...

Page 109: ...t panel N o Per100n tile Front Panel Mux Test Loop Iroubleshooting procedure Chect and repair US U9 and the Front Panel Pots v I Ul pin8al 5V and Ut pin 7 al ground v No Pertonn Front Panel Mux Test L...

Page 110: ...itions I f I T L _ i _ 1 0 1 I H i r H i i i 1 I i J l 1 T i Vol 2 Figure 9 117 PCO timing Trigger Position 10 Stopped 18 Acquisllions 1 T Vol 2 Figure 9 118 peo Timing Trigger Position 10 6 11 O S l...

Page 111: ...f 00 when the Bell should ring I there a 16 ms pulse thai does not go near 5 Von U3 pin 9 When the Bell sholAd ring y Replace U3 procedure the Bell prod a nO lsU3B pin l3al 5V No Check and repair FPPR...

Page 112: ...l LEOs ok No Pet10rm the Front Panel LED Test Loop troubleshOOting procedure Check and repair U5 U7 051 0524 and associated circuitry TDS 520 Component Level Diagnostic and Repair Manual Scans by Arte...

Page 113: ...output goes low The front panel LED Circuitry is ok N o No N o Check and repair Ul US UB and U7 Check and repair Ul US U6 and U7 Check and repairUl US 00 and U7 Check and repair US U7 and associated...

Page 114: ...and is the change smooth r the entire range of the pot No TDS 520 Component Level Diagnostic and Repair Manual Check and repair Ul US and U9 Check repair Ul US and U9 Check and repair tile affected p...

Page 115: ...s Ul pins 3 and 8 at SVand No Ul pin 7 at ground Yes Ul pins 24 31 No at 5V Yes WiIh nOo Jumpers No installed on p are TP6 TP19 and TP29 at 5V Yes Aun the Front Panel Sell Diagnostic Loop Check and re...

Page 116: ...and Repair Manual Scans by Artekmedia 2011 Slopped 82 A cqLllsltiollS 1 T H H 1 H t T I t 1 T Cill PWid 3 200SJJS Chl NWid 3 2000 S 2 000 V MS JJSCl 00 V Running OFF 1 4 1 I I I 1 r I t 1 t i i i I j...

Page 117: ...s No Check on TP1 1 TP18 match the repair U4 and waveforms shown in associated Fgure 9 13O circuitry TDS 520 Component Level Diagnostic and Repair Manual Scans by ArtekMedia 2011 PSO PS Stopped 363 Ac...

Page 118: ...Penorm the Bell troubleshooting procedure T m the fear panel POWER switch ott and then back on Is TP1 Qa 2 kHz 0 0 V to 4 4 Vsquare wave Are U3A pin 5 and CALSIG kHz waves Check and repair NOO _ I U3A...

Page 119: ...0511 o irg CR105g 16o ir 02 5 a5 a CR107 CRt06 CR104 CR103 CRlOl CAHXl o B 0 TPS U8 1 1 0 GIJ RSO 1 1 1 I li ill 1 11 l lfll l 1 0 I I O DSS 0 0 TPS n Tt l ll n 0 1 111 0 OS10 1 8 1 I I O DS BI I O P3...

Page 120: ...0 IE Uii ml1II illIa S33 S35 S36 537 0 0 0 illIa 0 muu 0 ltiJlIl iH 0 0 57 sa 59 0 0 0 0 0 ml1II iIIId 518 0 0 0 0 S38 54 55 56 0 0 0 illIa liliW 0 0 0 0 0 0 0 0 0 0 0 51 52 53 519 0 0 0 0 JEjjjj IIl...

Page 121: ...1 0 12 4 0 12 3 0 12 2 A12 1 oc 0 12 1 0 12 3 11 12 2 A12 2 0 12 0 12 1 A12 3 0 12 2 50 A12 2 0 12 0 12 3 A12 1 1 12 2 0 12 2 0 12 1 0 12 3 50 00 0 12 1 e A12 2 12 2 DO 0 12 3 AS A12 1 0 12 2 0 12 2 A...

Page 122: ...2011 Stopped 21 Acquisitions Envelopes 1 Ic T l j T j T 1 noli Slopped 15 Acquisitions f T f r f l I T T l t O msCh t l r 2 Probe Compensation S gnal ell I i OOO V 1 2 DO OmV M SOO JS enl J 2 00 V TP1...

Page 123: ...A13 Scans by ArtekMedia 2011...

Page 124: ...part 01 the Maintenance section Make sure that 5 1002 on the At 1 board is switched towards the back 01 the oscliloscope Power on enter the emulator mode an type wb 00400000 67 then il 0100 0000 0117...

Page 125: ...c TP c c CO c c cTpsc c TP2 o TP15 U40 C2 I U408 U405 U409 o TP TP46 0 o TP44 I I u U402 I I oTP23 U406 J2 U403 U407 C403 TP41 0 TPSl N cs 1 1 0 TPSO TP1BTP19 C12 0 TP2 o ooTP20 u O o OTP17 TP56 0 I I...

Page 126: ...SCHE LOCATION HUMBER lOCATION NUMBER HUMBER LOCATION NUMBER LOCATION A1 3 1 A1 3 1 13 1 A13 1 A13 1 AI 3 1 AIl I c AI3 1 PO A13 1 A13 1 A13 1 AI3 1 m A13 1 113 1 113 1 0 113 1 n 113 1 113 1 113 1 113...

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Page 128: ...0 0 0 0 00 0 0 00 00 0 00 0 0 0 00 0 0 0 0 0 0 0 0 00 00 0 0 0 0 00 0 re s 520 Component l evel Diagnostic and Repair Manual I 2 PHXl lao 00 00 0 00 00 o og o og 00 00 0 0 0 0 00 00 0 0 g o 00 00 00...

Page 129: ...n NUMBER NUMBER LOCATION NUM BER lOCATION UM8ER NUMBER NUMBER I OCA TION NUMBER NUMBER lOCATION NVIo BEA LOCATION NUMBER UMBER LOCATION HUMBER LOCAllON 1 4_ 4 _1 A1 1 Al _1 A14 _1 01 14 A 1 14 0 1 00...

Page 130: ...a A15...

Page 131: ...P1153 pins 16 and 18 ok see Table 9 8 Correct the 5 V or 5 V problem on the circuit board Do the outputs 01 U 150 U1450 have the correct resistance 10 ground see Table 9 9 Replace all lour hybrid att...

Page 132: ...Hybrid Ground Ground 11 17 17 kGI ICGND 12 20 17 kGI ICGND 13 10 17k01 ICGND 14 18 370fl RELAYGND Pin 8 15 24 370fl RELAYGND Pin 8 16 11 370fl RELAYGND Pin 8 17 4 370fl RELAYGNO Pin 8 18 25 1 1 kfl R...

Page 133: ...G C ll4 C 1 205 C1306 C 1 305 C1406 C1207 P1300 Cl 307 000000000 0000000 00 Ci3l0 B C 1410G 0 U1450 TPl 00000 0000 U1380 000000000 A1380C 1 382C l CD b AT 3OQ AT1400 O C1 Cl 301 O C1 C1304 C1309 C1400...

Page 134: ...CI201 415 0 e 415 0 Pll53 Cl 02 C 5 0 15 0 roo 5 1 WI OO Cl103 c A15 o e WIIDl 50 CllGo 0 CIllO 5 0 Pl l A15 O e roo 50 Cl10i5 0 15 0 C111 5 0 CI401 15 0 AI5 0 oc Wl201 15 0 50 2A CI106 15 0 Cl112 5 0...

Page 135: ...A16 A17 A18 A19 r i I Scans by ArtekMedia 201 1...

Page 136: ...T1 the Acquisition Processor troubleshooting procedure located in the A10 kquisition part 01 this section across J27 pins 1 Yes fan s COflfle Ctor securely attached to J20 on the All DRAM ProcessorlDi...

Page 137: ...rcuits that can hold U2 pin 6 low Is EITOI Amplifier U1A pin 3 at 2 5 II Is Error Amplifier U1A pin high Is Error Amplffier U1A pin 2 loW No lOS 520 Componenl l evel Diagnostic and Repair Manual I Cul...

Page 138: ...VDe Input and Bulk As the Ground Reference C H l 5 lJ A I 20 s 3 2 8 U lJ ERT 1 M I I I I j CH l COUPLI AC Vol 2 Figure 9 145 FET DRIVE Waveform With 60 VDC Input and Bulk As the Ground Reference ros...

Page 139: ...lrage and voltages up to 800 VDC ate accessible during this procedure Refer to the Safety Summary at the front of this manual fOf safety information Turn the power switch off and unplug the power cord...

Page 140: ...aln LV Power Supply board This will force the high Check and repair the L _____ _ _ _ _______ j Low Bulk Fault and r maximum duty cycle Connect a variable voltage supply 7 V tn J6 pin 5 top of R42 Wit...

Page 141: ...C 50 n ON D Vol 2 Figure 9 149 GATE DRIVE With 60 VDe Input and W4 pin 9 As the Ground Reference lDS 520 Component level Diagnostic and Repair Manual I N UE R T O N D F F Scans by ArtekMedia 2011 CH l...

Page 142: ...er Supply Secondary troubleshooting prn edure I the 00 V supply in current limit cY ___ I Look fot and repair short _______ on the AC sde of CAS r Is the VOltage at elZ Yes Make sure that the more pos...

Page 143: ...xternal supply I r the sU y Y _ 1 1 k and repair chirp rTKXle in chirp fault circuits See Table 9 13 mode No 07 and receiving Y __ rCh OC k Ihe d ru n g 0 I a 7 _________ J gate we See and 08 and the...

Page 144: ...11 2 I 2 2 2 J6 Itl Cjl B 06 R39 R 00 C 9 V R26 fa 1 02 1 2 0 0 0 0 0 a 0 2 12 J 0 0 0 R31 A28 0 R m o 0 1 J 0 1 CAll L9 Y VR1 C C S f 0 0 2K I R35 5 fiiit 1 1CA10 f O 10 023 CR1S It 0 po C11 01 0 2 0...

Page 145: ...pair Manual 4 COMPONENT NUMBER EXAMPLE A23 A l R1234 T T c _ Ift Io _ _r_ R STATIC l SENSrTI E DEVICES Scans by ArtekMedia 2011 Vol 2 Figure 9 156 A17 Main LV Power Supply Board Section B A16 A17 AlB...

Page 146: ...AC U o p L1 o C24 0 o 2 o C9 o AT5 o c o o o 17 o 0 as I r C10 o R12 o o 0 e CR2 A E TOS 520 Component Level Diagnostic and Repair Manual CO PONENT NUMBER AMPLE COIIl IOIIeW NIItlDet R STATIC VJ I SE...

Page 147: ...Diagnostic and Repair Manual I 4 o l10 0 R75 I Scans by ArtekMedia 2011 CONPONENT NUMBER EXAMPl a _ _ __ _ _ _ It STATIC J SENSITIVE DEVICES Vol 2 Figure 9 158 A17 Main LV Power Supply Board Section D...

Page 148: ...17 2 0 CAli AI1_1 An A17 2 A17 2 A17 2 0 CAI2 A17 1 An A 1 2 0 A n A17 1 e A17 2 CRl3 A17 1 Q AI1 1 c A17 2 0 A17 1 5A A17 2 A17 M A17 1 e A17 2 An AI1 A17 2 CR S A17 1 Q AI1 1 0 An e A17 2 A17 1 A17...

Page 149: ...ic and Repair Manual IN UE R T ONiD f Scans by ArtekMedia 2011 CH1 5ElEl J C H I C H I 5 1 s 5ElEl U U E R T F R EQ 6 3 3 6 k H z p p __ _ _ _ _ _ J GNio CH 1 COUPLING 50 ON OE I N UjO R T ON lbFF DC...

Page 150: ...R T RC OC ON OFF ON iDFF W2 pin 11 Ground W4 pin 9 TDS 520 Component Level Diagnostic and Repair Manual CHl CHI CHI A 2 l S p p FREQ rr CHl l 05 4 3 kH z _ _ _ _ __ _ _ _ __ __ _ I Hl CHl C OU PL lN...

Page 151: ...pin 9 A C H 1 C H 1 zp s P p FREQ El B U CHl 72 3ElB U l 05 04 kH z Hl CHI COU P LING DC GN _ _ _ _ _ _ __ _ _ 50 ON Q I N UE R T ON Q T6 pin 9 Ground W4 pin 9 TDS 520 Component Level Diagnostic and...

Page 152: ...0 U5 00000000 o COMPONENT NUMBER EXAMPLE A23 A2 R1 234 rr L If 0 _ _ _ _ _ _ R STATIC 3 1 SENSITIVE DEVICES A18 Vol 2 Figure 9 160 A1BMain Converter Control Board A16 A17 A18 and A19 Low Voltage Power...

Page 153: ...0 18 1 0 18 1 0 18 C 0 18 1 AU coo 0 18_1 0 18 1 A1S el l A 0 18 C A18 1 AU C 10 0 18 S A18 1 0 18 1 OA C A18 1 A OA CRll 11 18 C OA Al l C OA 11 111 1 A18 1 OA C A18 CR12 11 18 1 M 11 18 1 11 18 1 1...

Page 154: ...S pin 7 Ground W4 pin 9 C Hl 5lJ A i 2 s j F H l jP P C Hl FRE Q 1 CH l l5 El El lJ l El4 6 El k l z i H H l I CHl C OUP L ING 50 I N UE R T AC DC GN D ON O F F ON D FF W4 pin 10 Ground W4 pin 9 TDS 5...

Page 155: ...evel Diagnostic and Rep air Manual COMPONENT NUMBER EXAMPLE 0 _ ___ _ R STATIC J I SENSITIVE DEVICES 2 A19 Scans by ArtekMedia 2011 Vol 2 Figure 9 162 A19 Power Factor Control Board A16 A17 AlB and A1...

Page 156: ...11 9 11 9 1 11 9 11 19 CO 11 19 1 11 9 1 W 11 9 AIii 11 19_ CRS 11 19 1 11 9 3C 11 19 Rill 11 19 1 C 11 9_1 C 11 9 1 oo 11 9 3C 11 9 00 C 11 51 A 9 11 9 1 11 19 Alii I X 11 9 C 11 9 11 9 1 AIii W A I...

Page 157: ...A20 j r Scans by ArtekMedia 2011...

Page 158: ...damaged or defective deflection yol tl can cause these faults can the comer focus be adjusted No Replace the CRT deflection yoke combination V1000 1100A L100B Is the conect waveform at TP172 Yo No Che...

Page 159: ...itry No In the order listed check m repai 0205 CR205 CR149 C320 U428 C248 C455 C423 C258 1225 1100A and V1000 Adjust R569while watching the display screen Ooes a lighted background appear with no pict...

Page 160: ...s Ihe a ramp signal at A335 Yes No Check and repar U428 and associated circuitry Check and tepar J340 P340 Ll00B and associated circuitry Check and repair R335 and associated circuitry No Tum off the...

Page 161: ...r TP172 J475 b J574 00000000 DODOODDD COMPONENT NUMBER EXAMPLE _ _ _ _ R STATIC Jf SENSITIVE DEVICES Vol 2 Figure 9 166 A20 CRT Driver Board A2 O C R T D V bO 2 S9 t14 44 res 520 Component Level Diag...

Page 162: ...MBER NUMBER LOCATION NUMBER LOCATION HUMBER N UMBEA LOCATION NU OER LOCATION NUNB ER NUMBER LOCATION NUMBER lOCATION C171 00 R 4 em u A527 em C4 LIOOB A R528 C248 C4 7 M R372 A 50 C LlS1 R374 A Cl 6 c...

Page 163: ...TDS 520 Componenllevel Diagnostic and Repair Manual ChI Per 16 668ms Ch1 Per 16 672ms TeK Stopped 4 12 Acquisitions I T Refl 10 0 V 2 00ms Stopped m 1204 Acquisitions I T r I 1_ Scans by ArtekMedia 20...

Page 164: ...Per IT 99jJ S ChI PWid 14 94 1 ChI Per 32 00j U eM NWld 3 33J LS Scans by Artekmedia 2011 S lopped 9968 Acquisitions 1 1 1 t H r l I j Stopped 13386 Acqulslt jons 1 4 200mV ChI Per 32 00j l s ChI NWid...

Page 165: ...f M UUJ 1S I nl J TDS 520 Component Level Diagnostic and Repair Manual ChI Per 32 00 ChI PWid 14 71p s 1 eIc Slopped 9976 Acquisitions 1 t 1 It k Stopped q90 Acquisitions Scans by ArtekMedia 2011 75...

Page 166: ...Scans by Artekmedia 2011 A21...

Page 167: ...H 15 0 ellO C 09 C OB Rl03 Rl02 Cl01 TOS 520 Component Level Diagnostic and Repair Manual COMPONENT NUMBER EXAMPLE Campooent NIJtnb A23A2 TT L _ _ _ _ __ 11 STATIC l I SENSITIVE DEVICES Vol 2 Figure 9...

Page 168: ...TION NUMBER NUMBER lOCATION NUMBER LOCATION NUMBER HUMBER LOCATION NUMBER LOCATION CIO 0 21 e oo 0 2 1 1 PSO 8 0 21 1 0101 0 21 1 M A21 1 e 0 21 CliO 0 21 1 PSOle A21_1 0 0 21 1 00 0 21 1 e J 21 1 P50...

Page 169: ..._ 1 J Schematics...

Page 170: ...TCHES iO T6 N AHe FRONT PANEL REAR P L SWfTCHES J FRONT PANEL LEOS FRONT PANEL i POTS GPIB IEEE 5ro Be PORT 1 I S I GNAL PROBE i CONPENS t TION TUBE SSEHBLY 1 A12 RONT PAteL OISPL y II 1 S YSTEM I LOW...

Page 171: ...I I C I A 2 1 YCO wIO TDS 520 I R5 1 EN C m Ii PING EN C 1 GO PltcI EN C 1 0 I eo PINS E I C n w l A 2 0 CRT IIU ItOARO INTERCONNECTIONS...

Page 172: ...TER L _ H 0 EXTENDED TRlliGER CLOCK TRIGGER LOGIC t DEMlJ I TIPLEXER II DE TIPl EXER e TIME INTERPOL TOR Ii lITTER RAHP 1 Tl Io4 INTERPDL TOf Ii I _ _ _I JITTER FlAMP i AiD ACQUISITION I ACOUISITION 8...

Page 173: ...D FB e 1 5V 1r r f I V2 C12 1 CleOB TD I J 10uF th TOS 520 0 I u f 0 t f Ho 12Bl 4 LicD FS52 R12l U 1 71Y Uli oaB R943 TL CD c 39 2 t1 7 1 1 TP O _ 20 I CI20 J l tL71V U1201D Rs e T1 07 CO TP1 05 ROO...

Page 174: ...CTiS T 0 0 1 0 m 0 11 1 1 0 m II i m 13 1261 PARTI4L A 1 0 4CaUlSITlON B04Rtl L1101 FB52 W UHOID R9 TI 07 1CO 3S ell TP1 OS CliO D uuole TL07 1CD 0 1106 r4 D 5 tl UHee iSS 0378 VIN veelS vccs vcc VIN...

Page 175: ...11 H H H H H H H H H H H H TP 2S TP 27 R22S 1118 10 7 liA FROM 4 lo7lV I f L J R7 59 R7 i5 TP S9 tOO 1 3V T 760 l r 1 r w n It F OJ ceLK DeLK T T B2 5 ICI FROt 40 FRO 6C P RTI4L o 1 _ J 759 R R759 1 l...

Page 176: ...OI v C711 m 0 1 C L ell CVRTAOJ VEE 5 VEE iii 0 ii11if 0 o O OGNO OGNO O MO J Rl31 4 TI 123 T I U 2 RI33 Ria TPI i O R13 5 5 I 4 0 CONVERTER B I T 118 TP 18 RIOO RI2S A 2 Am RIOI L706 B2 S A UA 6 Cl l...

Page 177: ...5R M 2KXB 026 I I I F w 027 I 028 0 029 0 030 0 031 l I II 032 II II 033 A034 035 0 036 0 037 100_ 03B l 0 039 H 0 0 10 eR 0 0 11 1 SB STR IGA 0 12 0 3 SC STRIGB 0 1 o OS F 0 5 eR SHUGC O lS Ie 0 7 60...

Page 178: ...1 01 0 17 035 01 18 0 036 1 1 80 AI90 03 7 O 00 00 MMIO 11036 O C 0 039 0 040 FROM 1104 69 STAtli 0042 A043 SC STRlGS A04 1 045 0 046 FROM A047 60 0 048 0 049 050 0 0 05 1 A052 SCI 0 053 AOS lOSS 0 0...

Page 179: ...7 GP1SOS TP OS l 5Vt GP1S05 l R1613 TP1S0 5 00 VR161 G9 C16 2 16 3 5 IV 0 1617 I161S RISIS RISIS t nv RIS20 0 Hl O 10 0 26 O f Rl6lS 5V fl 00 10 0 RI628 39 2 CI62 CI62 7 J 1 1 J 1 162 J 5Vl 1 11639 RI...

Page 180: ...HIlTiC 5 11SlTiH DUHU A 101 R UI IA TLC72 o 1lr O i ro C8 r 11 7 RD 6Cl ROO SCI TOS 520 GPUi l TPI655 J UIVTI2 RiSSO CRiS 9 __J __________ __ __ TP16 5 5 5 2 GPl I 5 J VRl663 i 1 tY 1 11663 00 I Ui9 f...

Page 181: ...1A 1 162 001 111 lu I 15 56 00 1 1f l 1 L _t TtH r R1712 I ROM I le FROM 6C FROM 1401 FROM GCl FROM 49 1 U1550e TL07 CO EVNT2 J A I roI J j Q it C r r t 5 r 1 1 11553 15 i O IL___ __ ____JI 1 j 5 r 9...

Page 182: ...070 ST IGA 601 I UIO O 27 A IUSRCI OG225 S UT 0 o 0 9 2 BCJ V II OlOB 0 C D Rl071 0109 0IW IT 30 2 211 01010 0 0 9 0101 1 l LBUSWR SOUl lli HC t J 01012 i D 010 13 BIAS m 8 R1060 0 FROio 0101 10HHZ 1...

Page 183: ...56 15 C o J P1703 l 0 13 GP1705 1 117 23 I U CI703 l 75k P03 At13 O I I 13 9 9 CO A 16 2k_ 715k FI IOM PO AN 0 13 3 v n 120 1 11731 1 1172S I 11 01 GPI7 1 16 7 IA 1 11729 ETlGO R5T 110 715k 13 l c 0...

Page 184: ...NO TI 11 e A H Ok TL072 B FROI I M 1 2Al R liD 1 e IS 9 e T H 1 11505 R1522 flHIOG H e o 22 Ii 3321 l75k I Rl 5C5 RH52S 1 11530 RHi31 I 0 12 1k L 10 0 co L CRIS2 Q L IANALOG TRIGGER _I r J HOLDDFF CR...

Page 185: ...0 18 IB ole leJ iBI 0 Ie IC Ie to 3C rIg 0 lBI e93 o ICl i 1 0 181 0 935 o I C Ilioll qy ftC 11 C936 o C937 o leI 2 19 UC 0 lSI 5 6 Ie PIN IN ORMATION OE I CE IV 7 1HCT139 MC 05t IPR08E CONTROL BUFFE...

Page 186: ......

Page 187: ...1 1 e U629A TP B 7 o1Ht T74 tt ill f o US2S 74HCT32 I 5 1V I 0 U60C O 0 0 1 74HCToa 1 TP 36 t1t j 1 u 0 1 IIBI 0 I 0 tAl PA HI L A 1 0 t CQUl 51TION BOARO 5 t 7 HCTt3B l u F n F u I 7 Hen V V JL US2 7...

Page 188: ...TOO V l 5 IV US200 t T32 leB V II U62BC I T32 3B ISA US2Y HCT32 A 13B V A SOJ V Foe L r n Ir un A 7 c SAl I Ii I oc 381 0 0 3BI 1 CXlk R ID 1 21k 4 5 6 IACOUI5ITIDH AHO DIAGNOSTIC REGISTERS I 0 IBI 0...

Page 189: ...CXT Cl101 C I102 CI 5e 5 lO 10 IM J 33uF TPI559 VA CI 53O C I 5 13 CI 60 CI 58 l o l o l o 1 1 nul C I lII 5 Cl 5D7 C IBDO C l el0 1 0 1 1 0 1 J O 1M l o I PARTIAL A10 ACQUISITION BOARO I V 1 5Y 61 70...

Page 190: ...OARD CORESS SUFFERS CONTROL I OI5 LAY REGISTER INTERFACE 0 LATOlES CHIP l I 201 SELECTS CLeo _ 0 OM I OISPLAY DECODE SEGMENT I r L O CLOCK J I I Y 0 I I I r O SWlTO l QISPl T I SERVICE SEL ECTS 0 0 DE...

Page 191: ...00 0 0 0 0 O2 0 0 0 0 0 0 0 IO OPTION eus TO PRI NTER SOARD OR RS23Z BOARD t j II I i 13 I 1 1 16 17 18 f 0 2 1 2 23 2 0 4 I P ART I AL I 5 I R 01 BUS TO 01 BUS OARO AI S SN C C 9 0 r 101 o r r I I G...

Page 192: ...e e n e l U 00 OJ I 1 8 acl t9 2OJ c le l H OOHH e JW OO 5 IV OOHH f 20 OOHH 4 5 6 18 t c Cl 101 TYPE 4F04 I IV 741 74 13el 41 T39 1 5 o1i eo 0 j Ul1738 PALCE1SV HC T393 c 20 0 J IBI IC J 101 i v U11...

Page 193: ...c T5 ll 1 1 S I l R1 3CD 1 Rlec 1 RIC2B 1R2CCB 0 1 IUC 53 3 1 I INTERRUPT MASK I MISCELLANEOUS REGISTERS 4 1 2C 1 i U1339A 7 o1F32 U13380 74F32 U1339C 74F32 U13396 4F32 I 5 13CI IA 1 J lCI y U1179 7...

Page 194: ...FRCJIo4 I 1C i 1 l u I 3AJ I CI V SCII J OIA ILl 2Al 2A 3 3D IU I 9 3el lAl I 5AI 5 0 i leA 8 6 KAS I OM C i it EROS 3 TEST OM EWRS POINTS c aosopm s FROM 2C BOS o CKI 6 i 1lE BB II I T O s IY j cc mE...

Page 195: ...N NUMB R IS DECODED VIA PINS 2 5 OF 1 17 PIS RU ARE NCT PLACED Ii IHS e s OF U3 ARE WIRED HIGH 1081104 1 11039 1 11037 1 1103 5 UiDe7 1r H iHHf ii I n ni n U h h TOS 52 0 II STATlt SfUIlI I U130 S9UAP...

Page 196: ...12CI I 6AJ i I8YTE ENA8LE DECODE I UI048 I SC u 00 11C DO a DO t c r DC CA 5e l i V b J A n FRDM 301 4 5 6 IWAIT I STATE UI0 oIA 74F38 I s C _ 1 Ui I 1 0 CLK U O DO OS SAl C m i lCI l 0 r I O M I1 3CJ...

Page 197: ...IF oo 301 l i 1 1 0 3 1 lV _6 J R U1 c 1114 l oopF HUIC H ITJWE otYlcn TOS 52 0 I ISC Ul11U 11 38 e I Co 0 FROM SCI 1 tC __ OJ 5 u u I U1323C 1 08 I I NVRAH WRITE I P ROTECT 6 U132 3 1 0 8 NVRAM I U1...

Page 198: ...41 08 lS 5 U134 26 741 32 L FROM 41 I ISP OATA BUFFERS I Ul151 741 2 5 WtlS 74F245 6 O Z UL _ L___ _____ I Ll II C I R CNTRl oTAD Hie TO FROio 4 3S UB V 60 S91 IGO FROM Ie i lACK I REG P l I llD YO lC...

Page 199: ...TDJ2B II SS Cl SCI TYPE 5 IV fij leI 3D 9 491 7 Fa 1 19 B Co I 74Hr T JO 0 7 FJ2 IJOI1 x 7 F39 1 19 7 F Iasp INTERRUPTS I 7 F240 20 74F24 1 20 r 7 HCTS 20 TPes 74MeT FROM f2 J non o 16V8 115 I J TO FR...

Page 200: ...M D iJ ill 02 mO 8 r TI iI G TPc t j C TP2 TO AI 3 L 60 I68020 TO 02 AODRES5 LATCHES I I68020 TO 0 1 ADOAE55 LATCHES I I68020 T7 J i 11 BUFFERS I 2 TtI 13 1 TO 4 U1328 18 0 I U 34 J D2 0 IS I SC plAI...

Page 201: ...I 0 txt 00 0 101 1 IM 1 omu R f U1CJ7 3C t Ji S Sj 4FI oI U1DB1C I IS J to 1 32 00 on i f t 1 U13 eo U1073IJ UU l1C 1 32 m 0 1 7 om r 1ot 14 I lCI43 I 0 7 r J28 79 M YIO _ _ _ l u L __ Vii 301 XI 0 M...

Page 202: ...iGCI 6AI B OSP 01 OATA BUFFERS FROM 0 h I Y 3 FRO IliCI V OSP 0 1 Aa JRES5 L ATCHES 4 TYPE 15 tV 7 1FOB 7 o1F32 7 1F139 7 F2 15 0 0 AM29C941A 622 GS a SRAIot 128I Xe 5 01 MEMDAY no 6 Ul0D7 622i5SSHO H...

Page 203: ...FRON Ul0PB 74F32 PARTIAL A 11 OR PROCESSOR DISPLAY BOARD STUlt 5lUITIH DnlCn TOS 520 k 5C OSP02 ADDRESS I TCl ES ACDRESS DECODING li Bk BLOCKS AogRESS DECODING 3211 BLOO S n m Ul027 822565 40 n l 07 I...

Page 204: ...ING aCI 1 3C t HII TI 23 TO FROM SEE 0 3 TI 32 Ul09GB 74F32 4 021 1 10 MIse REGISTER FROio SA FROM 581 IC UI0960 74F32 5 TO IICI 3 6 TYPE Hi IV 74FI 38 7 HCT377 7 HCT5 1 72IJI S lV GtJo 1 j eo PARTIAL...

Page 205: ...w r BLANKING oeo yes INTERFACE C VIDEO SYSTEM 0 w c C R L _ 0 I mfm _ _ ______ _ L_ _ HI I I VECTOR LIST 1 m _ f TD5 520 TO OR FROM PROCESSOR CIRCUITRY SEE AU D I eeoc J c I u I oAe VIDEO B _____ ___...

Page 206: ...Fa2 FRIJIoI AB J FROM sa t J SCI J i HI t SCI u 0 0 0 00 0 0 a 0 a 1 06 I JI 0 UI7t PALCEt6V8H l S I Ul iBO FROM I BJ Ui a L HIe 74F04 FROH SC1 FROH 1301 3 US lC 741 32 I l 0 ts 0 4eJ 4e 12 0 3el 0 Al...

Page 207: ...VC om S O 0 I 1 _ _ Q TO leI 4 U6BS 7 1F32 TP7 __ I 5 I LIST 0 MEMORY 1 I LIST 0 DATA BUFFERS I F_ 381 I 6 TO j I LIST 0 TRISTATE LATCHES I 1 0 151 I S l I J lV S 7 11 32 7 1 74 7 1F1 17 OS 7 1 181 7...

Page 208: ...LIST t T UST o TE LATCHES I e 1 m TPB t6 1 FROM m I 0101 I I I mal A I 7 4 B e m m m B I Ip i I m i F f IVLIBT 1 DATA BUFFERS I FR 3 lI 01 I c m 5 tV J FRO OJ e ee m E S lY 7 F32 7 1F7 1 FROM SAI l IE...

Page 209: ...5 OVO 6 OVO 7 0 0 0 10 8 OVO 9 OVO l0 ova 11 OVO I ii IH1AO TO Ita ovo u INT II l DVD U INT o DVO l 15 L _ __ 511 1 IHTA3 0 1 0 O naSD OVl I INT81 OYI 2 lNTDOl I Y1 3 INT6 3 0 11 1 OV1 5 OVl 8 OVt 7...

Page 210: ...ERS m F elL FROio 12B P9 02 BUS f P I O INTER PII FACE 1 APP l 2 PI3 0 Pl CPU LV CPli FROM lC r OPl3 156 1 OPI I i i n lCl INTACC E ME CC L ill eo I m W AVE C L 2 1 lNTER T cE NNO 7 e j j 2 1 T mwo e...

Page 211: ...lV m u 7 F20 OH 50I I I 7 11 1 17 WFH 0 SHIFT REGISTERS 7 F19 B I S IV UPC lln I U1I2 CE22V1OH 25 7 FtS4 0 s S IV G C T I WFH o oORESS I MULTIPLEXERS TP10 f jjg il UU3 c 3CJ 7 F I9 O O r TPI1 H C 5 Ul...

Page 212: ...EMD fIY FROM 20 3 SO ISCI V TO F ROII GB 9 4 5 WFM l SHIFT REGISTERS l _ LJL _ TPS9 Ri s e DOHI REM OVE RESISTOR IF WAVEFORM PLANE 1 I S STUFFED TPG 6 tV 7 1F19 1 UPO lU S I TO 3S PAI lTl l A 11 DRAM...

Page 213: ...4 5 6 VIDEO SYSTE CCNTR LER U lMSJ OS I OJ 10 oo 1 I m CO c u m 00 6BI ISO BO oeo 01 OATA INTER 04 1 JC FACE c I U I 3C Ae f ilF p II 3 C hEll 0 40 C YCI E CASHI GENERATOR 1 5LO 3D 101 TR CIE I I 3D...

Page 214: ...IV OHICU ITEXJe E 0 I FROM ca i I TEXT PLANE 0 I SHIFT REGISTER 5 ITEXT PI HE 1 I Io4EM Y PO 6 I TEXT P NE 1 I SHIFT REGISTER I REMOVE Rles IF TEXT P ANE 1 IS STUFFED TYPE I 1V GND 7 32 i 7 7 1F19 1 1...

Page 215: ...J 1601 0 T lOG 201 0 F OM PUTS V 10 PO 00 p B OJ PC PIXEL P3 SEL P IN FRAME P6 BUFFER INTER 0 3131 Mr sa OI l LAT 0 2 SEL OL3 IN I RESET I BLJ NK SYN y e L FROio 12 J scI In 3e 160J IVIDEO TIMING I J...

Page 216: ...0 1 D 0 1 1 I I I I I I I I I I I I I I I I I I 1 T T TTl I I I I TIT T T T T T T T T 0 0 0 on 0 m 0 0 on 0 0 co 0 co 0 CBS CSB C91 C9J 096 ClOD CI02 CIC Cl OG CIC8 0 1 0 0 1 0 1 0 1 0 1 0 1 0 1 0 1...

Page 217: ...lOR FPPRESET ee FPPR R FPPT ROY e 3 ROW OECoot R AODRESS LINES SwITCH SC t lNEFI j ROWEN 7 FRONT PANEL m I TCHES S RUL I O 1 j CO OIC TION INTEPFACE SWITeocjr r on BELL 0 c BELL j FRONT PANEL PROCE S...

Page 218: ...AN 5 AN t I 1 FROM I f Ef w i All 1 t L I ase 1 OR PROCESSQIV RIO N C OSC2 OISPLAYBOARO I O C RESET Jy I IV I IRO ARTI L A 12 FRONT MeL 110 110 P PO P PO PO PC J N C p rfiIiJ L cF P C PC f i SCLK f J...

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Tektronix TDS 520, Diagnostic And Repair Manual

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