Model S690B ·
ERRATA
(cont'dt
•
.....
Page
7-15, Figure
7-S:
.
Change the wire color code
of
the wire between XA14 pin 6 and A9CR2,
from@
toG:).
The wire color code
of
the wire
at
T2 pin 13, 26 V
AC
winding,
is
@ .
CHANGE
1
Page 5-17, Table 5-4, Power Supply Adjustment:
Change the power supply adjustment sequence as indicated below:
Old Adjustment Sequence New Adjustment Sequence
a,
b,
c,
d,
e,
f,
g,
h,
i.
a,
b,
c, f,
g,
h,
i,
d,
e
Page 6-4, Table 6-1:
Add diodes A3CR56, A3CR57 and A3CR5S,
HP
Part No. 1901-0033 DIODE: SILICON 100
rnA
1SO
WV.
Page
6-6, Table 6-1:
Add diode A4CR11,
HP
Part No. 1902-3400 DIODE: BREAKDOWN 7S.7V 2%400
mW.
Change resistors A10R17/A10R1S
to
HP
Part No. 069S-3136 R: FXD 17.SK
1%
1/SW.
Page 6-10, Table 6-1:
Change
AS
Assy
to
HP
Part No. OS690-60053.
Add ASQ2 HP Part No. 1SS4-0073 THYRISTOR, SCR.
Add Resistor ASR15
HP
Part No. 0757-1000 R: FXD MET
FLM
51.1
OHM
1%
1/2W.
Add Resistor ASR16
HP
Part No. 0757-02SO R: FXD MET FLM l.OK
OHM
1%
1/SW.
Change Capacitor
ASC6
to
HP
Part No. 01S0-01S3
C:
FXD ELECT
10
UF +75
-10%50
VDCW.
Change ASQ1
to
HP
Part No. 1S55-0010 UNIJUNCTION: SILICON.
Change Resistor ASR13
to
HP
Part No. 069S-434S R: FXD MET FLM 4.99M
OHM
1%
1/2W.
Change Resistor ASR14
to
HP
Part No. 069S-3444 R: FXD MET FLM 316
OHM
1%
1/SW.
Page
6-11, Table 6-1:
Page
3
Change Transistors A10Q3 and A10Q4 to
HP
Part No. 1S53-0020 TRANSISTOR: PNP SILICON (Recommended replace-
ment for 1S50-0062).
Pages 6-12, and 6-13, Table 6-1:
Add diode A11CR19
HP
Part No. 1901-0033 DIODE: SILICON 100
rnA
1SO
WV.
Change Transistors
Al1Q2,
A.l1Q3, A11Q4, A11Q6, A11Q7,
AllQS
and
AllQll
to
HP Part No. 1S53-0020
TRANSIS-
TOR: PNP SILICON (Recommended replacement for 1S50-0062).
Page 6-16, Table 6-1:
Add chassis mounted diodes CR6 and CR7
HP
Part No. 1901-0033 DIODE: SILICON 100
MA
1SO
WV.
Change chassis mounted Fuse F3 to
HP
Part No. 2110-0002 FUSE: 2A, 250V.
Change chassis mounted Fuse F4 to
HP
Part No. 2110-0036 FUSE: SA 125V.
Page 6-17, Table 6-1:
Add chassis mounted resistor R26
HP
Part No. OS12-0019 R: FXD
WW
0.33
OHM
5%
3W.
Add chassis mounted resistor R27
HP
Part No. OS12-0020 R: FXD
WW
0.39
OHM
5%
3W.
Page 7-3/7-4, Figure 7-2:
Change A10Q3 and A10
Q4
to HP Part No. 1S53-0020 (Recommended replacement for 1S50-0062).
Change value
of
resistors A10R17/A10R1S
to
17.SK ohms.
Page 7-5, Figure 7-3:
Add diode A3CR56. (Connect anode to source
of
A3Q2A and cathode to emitter
of
A3Q3.)
Add diode A3CR57. (Connect anode
to
source
of
A3Q2B and cathode to emitter
of
A3Q4.)
Add diode A3CR5S. (Connect anode
to
base
of
A3Q5 and cathode
to
emitter
of
A3Q5.)
Change the A3 column
of
REFERENCE DESIGNATIONS Table
to
include diodes A3CR56, A3CR57 and A3CR5S.
Substitute the attached Component Identification Assembly A3 board photo (Figure 5) for the photo shown in the manual.
