Service manual

113
E
Manual Backdating
This section describes changes that must be made to the manual so that it applies to instruments with serial numbers lower
than those listed on the title page. Look in the following table for the serial number of your instrument, and make only those
changes listed for your instrument. Note that for some changes you may be instructed to update the instrument if certain
components are being replaced during repair.
_____________________________________
| Prefix | Serial Number | Make Changes |
| 6033A |
| 3004A | 05092-05096 | 1-10 |
| 3024A | 05272-06111 | 1-10 |
| 3124A | 06112-06591 | 1-10 |
| 3211A | 06592-06691 | 1-10 |
| 3223A | 06692-07051 | 1-9 |
| 3251A | 07052-07091 | 1-8 |
| 3303A | 07092-07171 | 1-7 |
| 3313A | 07172-07251 | 1-6 |
| 3329A | 07252-07691 | 1-5 |
| 3430A | 07692-07831 | 1-4 |
| 3442A | 07832-07951 | 1-3 |
| 3506A | 07952-08561 | 1, 2 |
| 3649A | 08562-08881 | 1 |
| US3649 | 0101-0230 | 1 |
| | | |
| 6038A |
| 2933A | 08856-08860 | 1-10 |
| 3025A | 09316-11135 | 1-10 |
| 3122A | 10396-06591 | 1-10 |
| 3212A | 11136-11255 | 1-10 |
| 3221A | 11256-11655 | 1-9 |
| 3250A | 11656-11695 | 1-8 |
| 3304A | 11696-11815 | 1-7 |
| 3309A | 11816-12075 | 1-6 |
| 3329A | 12076-12545 | 1-5 |
| 3431A | 12546-12655 | 1-4 |
| 3440A | 12656-12855 | 1-3 |
| 3511A | 12856-13825 | 1, 2 |
| 3651A | 13826-14195 | 1 |
| US3831 | 0101-0400 | 1 |
CHANGE 1:
Under A8 GPIB Board.
Add: R100 p/n 0698-4037.
U17 p/n 1820-2549
Delete: C67-70 0.01uF 10%, p/n 0160-4832, qty 4.
C71,73 2200pF 10%, p/n 0160-4830, qty 2.
L1 choke, p/n 9170-1680.
L2-4 core-shield bead, p/n 9170-1454, qty 3.
Q1 transistor 2N4917, p/n 1853-0089.
R1 47.5K 1%, p/n 0757-0457.
CHANGE 1 (continued)
Delete: R2,12 4.64K 1%, p/n 0698-3155, qty 2.
R79,80 0 ohm, p/n 8159-0005, qty 2.
U117 IC-9914 talker/listener, p/n 1821-1740.
Change: A8, GPIB board to p/n 5060-3551.
C14 to 0.047uF, p/n 0160-5422.
C23 to 39uF, p/n 0180-0393.
C61 to p/n 0160-4281.
U6 to p/n 5080-2160.
U36 to p/n 5080-2158.
CHANGE 2:
Under A4 Power Mesh board, change Q3,4 to transistor
PFET, p/n 1855-0547.
CHANGE 3:
Under A8 GPIB Board, change U33 to p/n 1820-0430.
CHANGE 4:
Under A8 GPIB Board, change U14 to p/n 1820-6721.
CHANGE 5:
Under A8 GPIB Board:
Add: U15, p/n 1LH4-0001.
Delete: U115, SN75ALS61610, p/n 1820-6045.
U116, SN75ALS6160, p/n 1820-6170.
C142 100pF, p/n 0160-4801.
C143-144 .047uF, p/n 0160-5422.
Change: A8, GPIB board to p/n 5060-3305.
CHANGE 6:
Under A1 Main Board Assembly, Change CR1,3 to p/n
1901-1087. Change CR2,4 to p/n 0901-0759.
CHANGE 7:
Under A3 Front Panel, change G1 to p/n 06033-60007.
Under Chassis Mechanical, change Knob to p/n 0370-
1303.
CHANGE 8:
Under A1 Main Board Assembly, change C13, 14 to
0.022uF, p/n 0160-5933.
CHANGE 9:
Under A8 GPIB Board, change U8 to p/n 1818-4111.
CHANGE 10:
Under A8 GPIB Board, delete D22.