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)
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