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Agilent Technologies 66000A Service Manual Download Page 27

Troubleshooting   27

 

 

 

Figure 4-1.  Overall Troubleshooting (Sheet 5 of 7)

Summary of Contents for 66000A

Page 1: ...GUIDE for Agilent 66000A MPS Mainframe Serial Numbers Agilent Model 66000A 3522A01561 thru 03295 US35220101 and up Agilent Part No 66000 90003 Printed in USA Microfiche Part No 66000 90004 Update Jun...

Page 2: ...d to Customer from another country Agilent Technologies shall pay for return of products to Customer Warranty services outside the country of initial purchase are included in Agilent Technologies prod...

Page 3: ...ric shock hazard Operation at line voltages or frequencies in excess of those stated on the line rating label may cause leakage currents in excess of 5 0 mA peak DO NOT OPERATE IN AN EXPLOSIVE ATMOSPH...

Page 4: ...mber prefix of your mainframe is higher than those listed on the title page of this guide then it may or may not include a change sheet That is because even though the higher serial prefix indicates a...

Page 5: ...Cover 15 Removing the Front Frame 15 Removing the Front Bezels and Keyboard Plug 16 Removing the Rear Subchassis 16 Removing the Pc Boards 16 Reassembly Procedures 17 Installing the Pc Boards 17 Assem...

Page 6: ...6 Sheet 2 Circuit Functions 39 Sheet 3 Circuit Functions 40 Backplane Board Schematic 40 Exploded View Diagram 40 Schematic Notes 41 Manual Backdating 49 Index 51...

Page 7: ...hat are used to help isolate a fault It includes the selftest sequence that runs automatically at power on and verifies the integrity of the microprocessor the GPIB and serial interfaces and the memor...

Page 8: ...ve digits e g 00101 are a unique serial number assigned to each instrument If a significant design change is made the prefix changes but the last five numbers continue in sequence This manual applies...

Page 9: ...removing or installing printed circuit boards Service Tools and Equipment The following tools are required to repair the Agilent 66000A MPS Mainframe T15 and T25 TORX drivers 10mm and 7mm HEX NUT dri...

Page 10: ...t 661xxA Series V T DMM Agilent 34401A or equivalent T Logic Probe Agilent 545A or equivalent T Oscilloscope Bandwidth 100 MHz Agilent 54504A or equivalent T MPS Keyboard2 Agilent 66001A V Isolation t...

Page 11: ...re located on the bottom of the modules Note At least one module is required to verify the operation of the mainframe b Remove the fuse and verify that the fuse is as specified on the label c Install...

Page 12: ...y displays the message 6 The keyboard then displays the state of the addressed module Note The information displayed on the keyboard assumes At least one power module is installed Factory default stat...

Page 13: ...Internal RAM Test Primary Microprocessor U44 defective ROM Microprocessor Troubleshooting Keyboard displays Self test Failed External RAM Test RAM U52 defective ROM Microprocessor Troubleshooting Key...

Page 14: ...ld now be in meter mode indicating the voltage and status of the dc power module Disable the output prior to connecting a load Press In Case of Trouble If the keyboard and module displays do not read...

Page 15: ...c line voltages are present on the Main board and backplane connectors Most of the attaching hardware is metric Use of other types of fasteners will damage threaded inserts Removing the Modules and Mo...

Page 16: ...bezels have been removed simply grasp the top MP10 or bottom bezel MP11 at either end and pull the bezels away from the frame The bezels will snap out of the front frame 5 Use the T15 driver to remov...

Page 17: ...P4 9 Carefully lift up the pc board and remove it from the subchassis Reassembly Procedures Most of the attaching hardware is metric Use of other types of fasteners will damage threaded inserts Instal...

Page 18: ...plug A3 in the second and third hole on the bottom right corner of the front frame MP18 when viewed from the front The bottom of the frame is thicker than the top 2 Align the pins on the top and bott...

Page 19: ...ssis so that it fits into the slot behind the front panel assembly Check that the cover is flush against the rear panel 3 Use the T25 driver and install the four screws that attach the handles and the...

Page 20: ......

Page 21: ...nal block at fault 3 Troubleshoot the functional block per flowchart instructions Troubleshooting tests built into firmware are provided to isolate a problem to one of the circuit boards or to a parti...

Page 22: ...flowchart Figure 3 1 will identify most of the problems in the mainframe The flowcharts of Figure 3 2 and Figure 3 3 will identify problems in the bias circuits and in the microprocessor circuits To a...

Page 23: ...Troubleshooting 23 Figure 4 1 Overall Troubleshooting Sheet 1 of 7...

Page 24: ...24 Troubleshooting Figure 4 1 Overall Troubleshooting Sheet 2 of 7...

Page 25: ...Troubleshooting 25 Figure 4 1 Overall Troubleshooting Sheet 3 of 7...

Page 26: ...26 Troubleshooting Figure 4 1 Overall Troubleshooting Sheet 4 of 7...

Page 27: ...Troubleshooting 27 Figure 4 1 Overall Troubleshooting Sheet 5 of 7...

Page 28: ...28 Troubleshooting Figure 4 1 Overall Troubleshooting Sheet 6 of 7...

Page 29: ...Troubleshooting 29 Figure 4 1 Overall Troubleshooting Sheet 7 of 7...

Page 30: ...30 Troubleshooting Figure 4 2 Bias Troubleshooting Sheet 1 of 2...

Page 31: ...Troubleshooting 31 Figure 4 2 Bias Troubleshooting Sheet 2 of 2...

Page 32: ...32 Troubleshooting Figure 4 3 ROM Microprocessor Troubleshooting...

Page 33: ...of the regional sales offices is given at the back of this manual When ordering parts include the following information Agilent Technologies part number Description of the part Quantity desired MPS mo...

Page 34: ...0 4136 CAPACITOR FXD 10uF 10 20V C89 0160 4807 CAPACITOR FXD 33pF 5 100V C90 92 0160 5422 CAPACITOR FXD 0 047uF 20 50V C96 0160 5422 CAPACITOR FXD 0 047uF 20 50V C98 0160 4807 CAPACITOR FXD 33pF 5 100...

Page 35: ...T TYPE 100 PIN SPCG 8 CONTACT J114 1251 7330 MODULAR PHONE RECEPTACLE RIGHT ANGLE PC MOUNT J116 117 1250 1842 CONNECTOR RF BNC FEM PC W STANDOFFS 50 OHM J119 1252 1014 CONNECTOR RECT SDL 6 CKT 6 CONTA...

Page 36: ...152 154 0683 1015 RESISTOR 100 5 25W R157 0698 3155 RESISTOR 4 64K 1 125W R160 164 0698 8812 RESISTOR 1 1 125W R165 0757 0442 RESISTOR 10K 1 125W R166 167 0698 3155 RESISTOR 4 64K 1 125W R168 169 0811...

Page 37: ...D 2 INPUT U87 1820 3206 IC LATCH CMOS HC ADDRESSABLE POS EDGE TRIG U89 1820 6789 IC INTERFACE TRANSCEIVER U91 1821 4383 IC DUAL UART 68000 COMPATIBLE U97 1820 3176 IC MULTIPLEXER DATA SELECT CMOS HC 8...

Page 38: ...THD Jl 2 2190 0034 WASHER LOCK HLCL Jl 2 2190 0849 WASHER FLAT MTLC Jl 2 0515 0406 SCREW MACHINE M3 X 0 5 8MM LG Jl TO PC BOARD L2 3 2 0380 0625 STANDOFF ROUND 687 IN LG L4 1 1480 0552 PIN ESCUTCHEON...

Page 39: ...Main board schematic diagrams The circuit functions of each schematic sheet are given as follows Sheet 1 Circuit Functions Among the circuit components included on Sheet 1 are microprocessor U44 GPIB...

Page 40: ...J122 5V and 28V bias power is distributed to the module slot locations via J120 U68 generates a power on power is available signal to the module slot locations via J120 Note J120 connects to J10 on th...

Page 41: ...S0lA5 indicates that the RDY signal continues on schematic sheet 01 at grid coordinates A 5 Coordinates are labeled on the schematic border Signal lines that are terminated by flags continue onto othe...

Page 42: ...2 5 C56 9 6 1 6 C163 14 8 2 5 L4 1 4 1 3 R130 6 2 2 0 U52 11 2 2 0 C64 11 0 3 0 D26 4 2 1 3 MC1 8 5 3 4 R131 6 3 3 9 U58 9 9 1 3 C65 11 1 1 5 D30 3 6 1 4 Q5 6 4 3 7 R132 6 8 3 9 U64 11 6 3 5 C68 10 9...

Page 43: ...TP 0 TP 1 TP 2 TP 4 TP 5 TP 8 TP 7 TP 9 TP10 TP11 TP12 TP13 COM TP14 TP 3 TP 6...

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Page 49: ...835 00836 00945 00946 01255 01256 01560 Changes 1 4 1 3 1 2 1 Change 1 Make the following changes in Table 5 2 Change MP4 from a single subchassis p n 5001 9840 to two subchassis parts MP4 p n 66000 0...

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Page 51: ...Power up Test 25 Backplane Serial Port Test 25 bias voltages 23 30 BPCLR 31 C checkout 11 D data lines 32 DFIB 27 DFI RI Pulse Train Test 27 DFI RI Test Connector 26 disassembly cover 15 front frame 1...

Page 52: ...oard Display Test 29 Keyboard Echo Test 29 L line voltage 11 M mechanical parts 38 microprocessor 32 MODID 25 O output checkout 13 overall troubleshooting 23 P PCLR 31 power cord 10 11 power module 7...

Page 53: ...ane board 40 main board 39 selftest 12 Serial Link Test 28 serial number 8 service manual 8 shock hazard 21 39 T TINF 28 tools 9 TP0 23 TP1 23 30 TP2 23 30 31 TP4 23 30 31 TP5 30 31 TP6 32 TP7 32 TP8...

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