HP 7970B Operating And Service Manual page 82

7970B/7970C
Replaceable Parts
FIGURE
UNITS
&
PART
DESCRIPTION
PER
INDEX
NUMBER
NO.
1
2 3
4
5
ASSY
6-14-42 1902-0048 DIODE, zener, 6.8V, 1 N321 0 (CR2) 1
43 1854-0215 TRANSISTOR, NPN, Si, 2N3904 (015, 016, 017). 3
44 0757-0198
RESISTOR, fxd, 100 ohms, 1%,l/2W (R32) 1
45 0757-0465 RESISTOR, fxd, lOOk, 1%, 1/8W (R33) .
1
46 0757-0280 RESISTOR, fxd, 1 k, 1%, 1/8W (R34, R36) 2
47
0180-0228 CAPACITOR, fxd, 22 /LF, 10%, 15 Vdcw (C8) 1
48 0757-0458 RESISTOR, fxd, 51.1 k, 1 %, 1/8W (R37) . 1
49
0757-0458
RESISTOR, fxd, 51.1 k, 1 %, 1/8W (R38) . 1
-50 0757-0419 RESISTOR, fxd, 681 ohms, 1%, 1/8W (R39) 1
-51 1853-0052 TRANSISTOR, PNP, Si, 2N3740 (06) 1
-52 0340-0180 INSULATOR, transistor, mica. 1
-53 2360-0195 SCREW, no. 6-32, 0.312-inch, pozi 2
-54 2420-0001 NUT, hex, no. 6-32, 0.312-inch 2
-55 0160-2055 CAPACITOR, fxd, 0.01 /LF, 100 Vdcw (C2, C4). 2
-56 1854-0022 TRANSISTOR, NPN, Si (05)
1
-57 1902-3311 DIODE, zener, 38.5V (CR7, CR8).
2
-58 1853-0080 TRANSISTOR, PNP, Si, 2N4888 (all) 1
-59 06834715 RESISTOR, fxd, 470 ohms, 5%, 1/4W (R13). 1
-60 1902-0040
DIODE, silicon (CR14) 1
-61
0757-0441 RESISTOR, fxd, 8.25k, 1%, 1/8W (R40). 1
Part 2
6-41