MANUAL CHANGES
Models 6236B and 6237B Triple Output DC Power Supplies
Manual HP Part No. 5950-1782
Make all corrections in the manual according to errata below, then check the following table for your power supply serial
number and enter any listed change(s) in the manual.
Model 6236B
ERRATA:
The corrugated shipping carton for this model has been
changed to HP Part No. 9211-2570. Two 9220-2703 floater
pads are used.
CHANGE 1 :
Change R34 to 470 ohms, 1/2W, HP Part No. 0686-4715.
Also add three new resistors: R78 and R79, both 825 ohms,
1%, 1/8W, HP Part No. 0757-0421; and R80, 750 ohms,
1%, 1/8W, HP Part No. 0757-0420. R78, R79, and R80
are connected from base to emitter of Q1, Q7, and Q3,
respectively, and are located on the circuit board as
follows: R78 − between Q2 and CR28, R79 − near R55,
and R80 − between Q3 and C17. These changes prevent a
turn-off overshoot.
9-8- 77
Model 6237B
Note 1: Change 1 applies to the following instruments from earlier production runs. Model 6236B: serial 1705A-00502,
-505, -507, -526, -533, -534, -536, -541, -544, -546, -547, -573, -577, -594. Model 6237B: serial 1706A-00263,
-264, -269, -272, -291, -296, -298, -299.
SERIAL
MAKE
SERIAL
MAKE
Prefix
Number
CHANGES
Prefix
Number
CHANGES
1705A (Note 1) 1 1706A (Note 1) 1
1732A 00601-up 1 1735A 00301-up 1
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