artisan 8640B - Page 262

Model 8640B TM 9-4935-601-14-7&P
CHANGE 6 (Cont'd)
Page 6-36, Table 6-3:
Change A26A4CR7-9 to 1901-0539 DIODE, SCHOTTKY, SI.
Page 8-3, paragraph 8-20:
Delete references to "IC regulator" (two places).
Service Sheet 18 (schematic):
Add a 2.2 pF capacitor C8, with asterisk (*), between A8AIU1 pin 13 and ground.
CHANGE 7 NOTE
See paragraphs 7-78 through 7-82 for recommended instrument modification.
Page 6-14, Table 6-3:
Add A8A2C31 0160-3456 CAPACITOR; FXD; 0.001 UF + 10% 1000 WVDC.
Page 6-25, Table 6-3:
Add A11MP17 08640-00081 INSULATOR, VAR AUD OSC.
Page 6-36, Table 6-3:
Change A26A4R5 to 0757-0290 RESISTOR; FXD; 6.19K 1% 0.125 W F TUBULAR.
Page 6-37, Table 6-3:
Change A26A4R28 to 0698-3154 RESISTOR; FXD; 4.22K 1% 0.125 W F TUBULAR.
Service Sheet 12 (schematic):
Change A26A4R5 to 6190 ohms.
Change A26A4R28 to 4220 ohms.
Service Sheet 21 (schematic):
Add A8A2C31, 1000 pF, between TP6 and ground.
CHANGE 8
Page 6-6, Table 6-3:
Change A2VR2 to 1902-3104 DIODE; ZENER; 5.62V VZ; 0.4W MAX PD.
Service Sheet 17 (schematic):
Change A2VR2 to 5.62V:
Change indicated voltages at A2VR2 cathode, A2U1 pin 4, and A2U2 pin 5 to -14V.
7-28
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