48 Troubleshooting
Table 3-5. Secondary Interface SA Test
Description: These signatures check the secondary microprocessor AlU504.
Valid AlU504 ROM Firmware Revision: A.01.03
Test Setup: See Figure 3-4 either Sheet 2 or Sheet 3 as applicable to your model.
1.
Turn off the power supply and remove the top cover.
2.
Connect signature analyzer CLOCK, START, STOP, and GROUND inputs and setup as follows:
Signature Analyzer
Edge
A1 Board Connection
Input
Setting
3.
To place the secondary interface in the SA mode, turn on the power supply while momentarily (for 2 seconds) shorting
A1U504-1 to A1U504-20 (common).
4.
Use the signature analyzer probe to take the following signatures:
Power:
5 V = 1C4C
Microprocessor:
AlU504-1 = F77H
AlU504-21 = 5PC7
AlU504-2 = C98P
AlU504-22 = 5PC7
AlU504-3 = 1573AlU504-23 = 5PC7
AlU504-4 = P42A
AlU504-24 = 6CAP
AlU504-5 = UHF8
AlU504-25 = A319
AlU504-6 = F5UC
AlU504-26 = A319
AlU504-7 = UH8C
AlU504-27 = A319
AlU504-8 = 23UC
AlU504-28 = 5PC7
AlU504-9 = 0000AlU504-29 = 1C4C
AlU504-10= 1C4C
AlU504-30= 0000
AlU504-11 = 1C4C
AlU504-31 = 1C4C
AlU504-12 = C76F
AlU504-32 = 0000
AlU504-13= U042
AlU504-33 = 0000
AlU504-14 = 2189
AlU504-34 = 0000
AlU504-15 = 1C4C
AlU504-35 = 0004
AlU504-16 = 1C45
AlU504-36 = 0UP7
AlU504-17 = 0010
AlU504-37 = UF7P
AlU504-18 = 0000
AlU504-38 = CP47
AlU504-19 = 1C4C
AlU504-39 = CP47
AlU504-20 = 0000
AlU504-40 = 1C4C
5.
After completing the tests, be sure to return the J3 jumper to its original position.
Summary of Contents for 6541A
Page 12: ...12 Verification Figure 2 1 Basic Test Setup CV TESTS CV TESTS ...
Page 18: ...18 Verification Figure 2 3 CC RMS Noise Measurement Test Setup ...
Page 30: ......
Page 32: ...32 Troubleshooting Figure 3 1 Top View with Cover Removed for 655xA 665xA Models Sheet 1 of 2 ...
Page 33: ...Troubleshooting 33 Figure 3 1 Top View with Cover Removed for 655xA 665xA Models Sheet 2 of 2 ...
Page 37: ...Troubleshooting 37 Figure 3 2 Overall Troubleshooting Flow Diagram Sheet 1 of 4 ...
Page 38: ...38 Troubleshooting Figure 3 2 Overall Troubleshooting Flow Diagram Sheet 2 of 4 ...
Page 39: ...Troubleshooting 39 Figure 3 2 Overall Troubleshooting Flow Diagram Sheet 3 of 4 ...
Page 40: ...40 Troubleshooting Figure 3 2 Overall Troubleshooting Flow Diagram Sheet 4 of 4 ...
Page 51: ...Troubleshooting 51 Figure 3 5 No Display Troubleshooting ...
Page 52: ...52 Troubleshooting Figure 3 6 OV Will Not Fire Troubleshooting ...
Page 53: ...Troubleshooting 53 Figure 3 7 OV At Turn On Troubleshooting Sheet 1 of 2 ...
Page 54: ...54 Troubleshooting Figure 3 7 OV At Turn On Troubleshooting Sheet 2 of 2 ...
Page 55: ...Troubleshooting 55 Figure 3 8 Output Held Low Troubleshooting Sheet 1 of 2 ...
Page 56: ...56 Troubleshooting Figure 3 8 Output Held Low Troubleshooting Sheet 2 of 2 ...
Page 57: ...Troubleshooting 57 Figure 3 9 Output Held High Troubleshooting ...
Page 58: ...58 Troubleshooting Figure 3 10 DAC Circuits Troubleshooting ...
Page 60: ...60 Troubleshooting Figure 3 13 Serial Down Troubleshooting Sheet 1 of 2 ...
Page 61: ...Troubleshooting 61 Figure 3 13 Serial Down Troubleshooting Sheet 2 of 2 ...
Page 62: ...62 Troubleshooting Figure 3 14 Secondary Down Troubleshooting Sheet 1 of 2 ...
Page 63: ...Troubleshooting 63 Figure 3 14 Secondary Down Troubleshooting Sheet 2 of 2 ...
Page 64: ...64 Troubleshooting Figure 3 15 Slow Down Programming Troubleshooting ...
Page 65: ...Troubleshooting 65 Figure 3 16 Isolator Board Circuits Troubleshooting ...
Page 80: ......
Page 87: ...Principles of Operation 87 Figure 4 4 Output Power and Control Circuits ...
Page 94: ......
Page 136: ......
Page 145: ...Figure 6 1 Power Supply Interconnection Diagram for All Models ...
Page 146: ...Figure 6 2 AC Power Distribution Diagram for 655xA 665xA Models ...
Page 147: ...Figure 6 3 GPIB Board Assembly Diagram sheet 1 of 2 ...
Page 148: ...2 3 4 1 6 5 7 8 Figure 6 3 GPIB Board Schematic Diagram sheet 2 of 2 ...
Page 149: ...Figure 6 4 Front Panel Board Assembly Diagram sheet 1 of 2 ...
Page 150: ...Figure 6 4 Front Panel Board Schematic Diagram sheet 2 of 2 ...
Page 152: ...Figure 6 5 A1 Main Board Assembly Diagram for 654xA 664xA Models Only ...
Page 160: ...Figure 6 6 Left Tunnel Circuits Schematic Diagram for 654xA 664xA Models Only sheet 2 ...
Page 162: ...Figure 6 7 Right Tunnel Circuits Schematic Diagram for 654xA 664xA Models Only sheet 2 ...
Page 164: ......
Page 168: ......