HP 6236A Operating And Service Manual page 37

MANUAL CHANGES
Models 6236A and 6237 A DC Power Suppl ies
Manual HP Part No. 5950-1737
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 6236A
SERIAL MAKE
CHANGES
Prefix Number
All
-
Errata
1436A 00101-00127 (see note)
1436A 00128-00140 1 (see note)
1507A
00141-00350
1,2
1525A 00351-up 1,2,3
Model 6237A
SERIAL
MAKE
CHANGES
Prefix Number
All
-
Errata
1fOllA
00101-00170 1
1526A
00171-up
1,3
NOTE: This manual applies to 6236A supplies with a serial numjter prefix of 1436A \,':ith this exception: the part
number for R1 and R41 should be 2100-3461.
ERRATA:
On the title page, change the appl icable serial numbers to:
Model 6236A, Serials 1436A-0010l and above.
Model 6237 A, Serials 1511 A-OOl 01 and above.
CHANGE 1:
To the parts Iist and the schematic, add ferrite bead inductor
L3, HP Part Number 9170-0894. L3 is· installed on either
lead of diode CR49.
CHANGE 2:
This change to the Model 6236A replaces the printed circuit
board mounted pots used previously for R1 and R41 with
front panel mounted pots. Their HP Part Number is 2100-
1854.
CHANGE 3:
Delete Rl and R41 from the parts list under Front Panel -
Electrical, and add R1 and R41 (10kD. variable, HP Part
Number 2100-3461) under Printed Circuit Board Assembly.
ERRATA:
In the Exact Commercial Replacement column of Table 5-8,
and the Mfr. Part No. column of Table 6-4, delete the entries
for VR2 and VR3 and insert the following:
VR2 SZ 10939-170 (Motorola)
VR3 1N4353B
8-26-75