HP 722A Operating And Service Manual page 37

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MANUAL CHANGES
MODEL 722A/AR
DC POWER SUPPLY
Manual Serial Prefixed: 105-
Manual Printed 11-61
To adapt this manual to instruments with other serial prefixes check for errata below, and make
changes shown in tables.
Instrument Serial Prefix
Make Manual Changes Instrument Serial Prefix Make Manual Changes
105- 1,2
CHANGE #1. Figure 4-3
Change reference designator R13 to R14
Figure 5-4, 5-5
Change reference supply voltage to +13.8 ~0.2 volts
Paragraph 5-23 step b,
Change to read: ".
+13.8 ~0.2 volts"
until the meter reads
CHANGE #2
4/12/62
Figure 5-5
Change Amplifier Q12 from 2N247 to 2N274