126 Replaceable Parts
Table 5-7. Parts List For 500 Watt A1 Main Board for 655xA & 665xA (continued)
Reference
Desig.
Applicable Models
Agilent Part No.
Description
RT770
0837-0412
Thermistor
S610
3101-2894
Switch-PB DPDT (SENSE)
U502
5080-2150
IC Prgmd-GAL
U503
1826-1370
IC 365 Comp
U504
5080-2250
IC Secondary uP
U505
1826-1369
IC Volt Reg
U506
1826-0346
IC Op Amp
U507
1826-2187
IC DAC
U508
1826-1896
IC Linear Amp
U509
1826-2187
IC DAC
U510
1826-1896
IC Linear Amp
U511
1826-2187
IC DAC
U512
1826-1896
IC Linear Amp
U513
1826-1370
IC 365 Comp
U600
5060-3321
HS Assy (includes 1826-0106)
U601
5060-3320
HS Assy (includes 1826-0122)
U602
5060-3229
HS Assy (includes 1826-0124)
U603
1826-0962
IC Comp 412
U605
1826-2252
IC OP27OGP
U606
1826-0962
IC Comp 412
U607
1826-1533
IC 34072
U608
1826-1370
IC 365 COMP
U609, 610
1826-0962
IC Comp 412
U700
1990-0543
IC Opto-Isolator
U720
1826-0468
IC MC3423P1
U721
1858-0047
IC Transistor Array
U740
1858-0076
IC Transistor Array
U74
65/6651A, 65/6655A
1858-0077
IC Transistor Array
65/6652A-65/6654A
1858-0076
IC Transistor Array
VR610, 611
1902-0025
Diode Zener 10V 5%
VR670
1902-0556
Diode Zener 20V 5%
VR720, 721
1902-0947
Diode Zener 3.6V 5%
VR770
1902-0955
Diode Zener 7.5V 5%
VR771
1902-0957
Diode Zener 9.1V 5%
XF450
2110-0642
Fuseholder
Y501
0410-4219
XTAL 11.590 MHz
0380-1128
Stdf-female (ref D400,404,690,CR700)
0515-0885
Screw-mach M4 x .7 8m lg (board to bus strip)
0535-0031
Hex nut with lockwasher (ref J451)
0570-0647
Stud-std (ref J451)
1200-0552
Socket, IC 40-cont (ref U504)
HS400,690
1205-0587
Heat sink (65/6652A ref D400,404,690) (65/6653A
ref D402, 690) (65/6654A ref D402, CR700/D690)
HS600
65/6651A
1205-0280
Heat sink (ref R657)
65/6652A-65/6655A
Not used
2190-0084
Washer, lock (ref HS400,690)
2680-0232
Screw machine 10-32 0.312 inch lg.
PHL pan head (ref D400,404,690,CR700)
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: ......