Agilent Technologies 655 A Series Service Manual

CHANGE 1
In Table 5-5 & 5-7:
Add Capacitor, C740, 4700 pf 10 % 100 V P/N 0160-4831 (Qty 1).
CHANGE 2
In Table 5-9:
Change Capacitor, C138, from 0.01 uf 10% 100 V P/N 0160-5422 to 0.047 uf 20 % 50 V P/N 0160-4832
Change resistor R134 from 1K 5 % 1/4 W P/N 0683-1025 to 100 ohm 5 % 1/4 W P/N 0683-1015.
CHANGE 3
In Table 5-9:
Change Capacitor C107 and C108 from 22 pf P/N 0160-4787 to P/N 0160-4807.
In Table 5-10:
Change Capacitors C3 and C4 from 22 pf P/N 0160-4787 to 33 pf P/N 0160-4807.
CHANGE 4
In Table 5-10:
Remove Magnetic Core (Qty 1 ) REF. front Panel phone cable P/N 9170-1497.
CHANGE 5
In Table 5-10:
Change cable assembly for PCB keypad From P/N 5060-3464 to P/N 5060-3427.
Delete Magnetic Core P/N 9170-1497 REF. Front panel phone cable.
CHANGE 6
In Table 5-5:
Change Resistors R691 and R692 to 1K P/N 0757-0280.
CHANGE 7
In Table 5- 9:
Change Optoisolators, Ul10 and Ul11 from P/N 5080-2176 (Qty 2) to P/N 1990-1387.
CHANGE 8
In Table 5-9:
Remove Capacitor, C136, 68 pf 5 % 100 V Ceramic P/N 0160-4803.
CHANGE 9
In Table 5-5:
Change Operational amplifier, U605, from OP270 P/N 1826-2252 (Qty 1) to LT 1057 P/N 1826-1845.
CHANGE 10
In Table 5-5:
Remove heatsink HS600 P/N 1205-0282 (Agilent 6651A only).
Remove Capacitor, C646, 47 pf P/N 0160-4805.
CHANGE 11
In Table 5-9:
Change Optoisolator Ul10, Ul11 (Qty 2) from P/N 1990-0444 to Lead formed P/N 5080-2176.
Remove Resistor R137 100 ohm 1% 1/8 watt P/N 0757-0401.
Remove Capacitors C138-140, (Qty 3) 0.047 uf, P/N 0160-5422.
Remove Inductor, L101, (Qty 1)150 nH P/N 9100-1610.
CHANGE 12
In Tables 5-5 & 5-7:
Change Resistor, R785 from 115 ohms 1% 1/8 W P/N 0698-4406 to 68.1 ohm 1% 1/8 W.
CHANGE 13
In Tables 5-5 & 5-7:
Remove Capacitor C742 (see change 20).
Remove Resistor, R754, 2.15 ohms 1 % 1/8 W P/N 0698-8816 (Qty 1).
Remove Capacitor, C708, 0.01 uf 100 V 10 % ceramic P/N 0160-4832 (Qty 1)
Remove Capacitor, C646, 47 pf 100 V 5 % ceramic P/N 0160-4805 (Qty 1)
CHANGE 14
In Table 5-9:
Remove standoff-hex REF. GPIB connector P/N 0380-0643 (Qty 2).
Remove Lock washer, M4, REF. GPIB Connector P/N 2190-0586.
Remove rivet, REF. GPIB Clevis P/N 0361-0276.
Change Rear panel from P/N 5001-6742 (Qty 1) to P/N 06652-00002.
Appendix A 171

Agilent Technologies 655 A Series Specifications

General

Brand	Agilent Technologies
Model	655 A Series
Category	Power Supply
Language	English