HP 608E Operating And Service Manual page 94

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Model 608E
Appendix I
APPENDIX I
BACKDATING
MANUAL CHANGES
Model608E
VHF
SIGNAL GENERATOR
Make all backdating corrections in this manual according to the changes below•
""AKE MANUAL CHAHGES IIIAKE MANUAL CHAHGlI!:S
539- below 00120 A through
M
833-
I
through
M
543- B through M 833- above 01671
J,
throughM
610-, 637·
C th.rough
M 833- above 01821
K.
L,M
637- above 00320 D through
M
833- above 02121 L M
710- E through
M
833-abc:we 02720
M
742-
F
through
M
742- above 00970
G through M
826- H through M
CHANGE A
CHANGE B
CHANGE C
Figure 7- 5 and Parts List:
Add (in series with emitter of
Ql):
R128, UP Stock No.0812-0033, Fixed
v.:W
7 ohm
3%
5W.
CR20, change HP Stock No. to 1902-0037.
Parts List:
Change Q7 to HP Stock No. 1850·0103, 2N2190 under Q7 change HP Stock
No. 1205-0011 to read 1205-0012. (Change included in instruments
710-00500 and below. Recommended change for all older models).
Delete under R237 descriptions: "Factory selected part - typical value given. "
Figure 7-5:
Delete asterisk ("') after R237 denoting factory selection; typical value given.
Figure 7- 5 and Parts List:
Change Tl HP Stock No. from 9100-2289 to 9100-0047.
Change schematic to show filament wiring of Tl as follows:
1-1