HP 654A Operating And Service Manual page 79

Model 654A
Appendix C
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à
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MANUAL BACKDATING CHANGES
Model 654A
TEST OSCILLATOR
Serials Prefixed: 0951A-
This manual backdating sheet makes this manual applicable to earlier instruments.
Instrument-component values that differ from those in the manual, yet are not listed in
the backdating sheet, should be replaced using the part number given in the manual.
Instrument Serial Prefix
Make Manual Chames
907-00200 and below
1
951-00340 and below
1, 2
0951A00755 and below
1, 2, 3
CHANGE NO. 1
Table 6-1: Change A2R11 to R: fxd, 10 IcS2 ± 1%, 1/8 W,
-hp- Part No. 0757-0442.
Change A2R12 to R: fxd, 4.02 Id/ ± 1%, 1/8 W, -hp-
Part No. 0698-3558.
Figure 7-2: Change the value of A2R11 to 10
ks
-
z
and the
value of A2R12 to 4.02 ka
CHANGE NO. 2
Table 6-1: Change the -hp- Part No. of J1 to 1251-0148
Change the -hp- Part No. of WI to 8120-0078.
Change the -hp- Part No. of Panel: rear to 00653-00202
(Mechanical Parts).
Change the -hp- Part No. of MP17 to 00653-01204.
Delete MP50, Bracket: Attenuator -hp- Part No.
00653-01206.
CHANGE NO. 3
Change the -hp- Part No. of Ti to 9100-0294.
Instrument Serial Prefix
Make Manual Changes