artisan 8640B - Page 255

Model 8640B TM 9-4935-601-14-7&P
MANUAL CHANGES
CHANGE I
NOTE
See paragraph 7-46 for recommended instrument modification.
Page 6-36, Table 6-3:
Change A26A4C14 to 0160-0134 CAPACITOR; FXD; 220 PF i5% 300 WVDC.
Service Sheet 12 (schematic):
Change A26A4C14 to 220 pF.
CHANGE J
NOTE
See paragraphs 7-48 through 7-51 for recommended instrument modification.
Page 6-13, Table 6-3:
Change A8A1 to 08640-60041 RF SCALER ASSY.
Delete A8A1C7.
Delete A8AlCR1-3.
Add A8AlCR1-4 1901-0518 DIODE: HOT CARRIER.
Add A8A1CR5, 6 1901-0050 DIODE: SI 200 mA at 1V.
Delete A8AiMP2-4.
Add A8A1Q3 1854-0071 TRANSISTOR NPN SI PD=300 MW FT=200 MHZ.
Change A8AlR1 to 0698-6648 RESISTOR; FXD; 620 OHM 5% 1/8W.
Add A8A1R2 0698-5103 RESISTOR; FXD; 430 OHM 5% 1/8W.
Add A8A1R3 0698-7248 RESISTOR; FXD; 3.16K 2% 1/8W.
Page 6-14, Table 6-3:
Change A8A2C27 to 0160-3877 CAPACITOR; FXD; 100 PF 20% 200 WVDC.
Delete A8A2C28, C29 and C30.
Page 6-30, Table 6-3:
Delete A18R19.
Page 6-31, Table 6-3:
Delete A20R27.
Page 6-32, Table 6-3:
Delete A22R26 and R27.
Service Sheet 18 (schematic):
Replace appropriate part of schematic with attached partial schematic (Figure 7-7).
Service Sheet 20 (schematic):
Delete A8A2 C28, C29 and C30.
7-21
Artisan Technology Group - Quality Instrumentation ... Guaranteed | (888) 88-SOURCE | www.artisantg.com