Page4
CHANGE 1 {cont'd)
Pages 7-9/7-10, Figure 7-5:
Substitute
the
attached
AS
Assy board photo (Figure 3) for the photo shown,in the manual.
Add 7S.7V breakdown diode A4CR11. (Connect anode
to
ground and cathode
to
A4R34, A4C8 junction.)
Change
the
A4 column
of
REFERENCE DESIGNATIONS Table
to
include diode A4CR11.
Pages 7-11/7-12, Figure 7-6:
Change Transistors A11Q2, A11Q3, A11Q4,
AllQ6,
AllQ7,
AllQS
and
AllQll
to
HP Part Number 1S53-0020. (Recom-
mended replacement fqr 1S50-0062).
Add diode A11CR19. (Connect anode
to
base
of
AllQll
and cathode
to
emitter
of
Al1Q11.)
Add chassis mounted diode CR6. (Connect anode
to
center conductor
of
MARKER
output
jack and cathode to ground.)
Add chassis mounted diode CR7. (Connect anode
to
center conductor
of
BLANKING
output
jack and cathode
to
ground.)
Change
All
column
of
REFERENCE DESIGNATIONS Table
to
include diode A11CR19.
Change chassis mounted component column (no heading)
of
REFERENCE DESIGNATIONS Table to include diodes
CR(?
and CR7.
Page 7-14:
Substitute the attached
AS
Assy, ComponentIdentification board photo (Figure 1) for the photo shown in
the
S690B Manual.
CHANGE2
Pages 6-14 and 6-15, Table 6-1:
Change A14 Heater Supply Assy
to
HP
Part Number OS690-60054 (New board).
Add the following A14 Assy Components (Parts list for new A14 Assy).
C1 0160-3534
C:
FXD MICA 510 PF
5%
100
VDCW.
C3 0180-00S9
C:
FXD ELECT 10 UF
-10%
+100% 150
VDCW.
C4 0160-3539
C:
FXD
MICA
S20 PF
5%
100
VDCW.
C5
01S0-0141
C:
FXD ELECT 50 UF +75
-10%50
VDCW.
C6 0160-2205
C:
FXD
MICA
120 PF
5%:
C7
01S0-0094
C:
FXD ELECT 100 UF 25
VDCW.
CR1 1902-0041 DIODE, BREAKDOWN: 5.11V
5%
400
mW.
CR2 1901-0025 DIODE, SILICON 100 MA/1V.
CR3 1901-0025 DIODE, SILICON 100 MA/1V
CR4 1901-0025 DIODE; SILICON 100 mA/1V.
IC1 1S20-0196 IC: VOLTAGE REGULATOR.
IC2 1S20-0196 IC: VOLTAGE REGULATOR.
IC3 1S20-0196 IC: VOLTAGE REGULATOR.
Q1
1S54-0062 TRANSISTOR: SILICON NPN.
R1 0757-041S R: FXD MET FLM 619
OHM
1%
1/SW.
R2 0757-0440 R: FXD MET
FLM
7.5K
OHM
1%
1/SW.
R3 0757-043S R: FXD MET FLM 5.11K
OHM
1%
1/SW.
R4 0757-0461 R: FXD MET FLM 68.1K
OHM
1%
1/SW.
R5 0757-0473 R: FXD MET FLM 221K
OHM
1%
1/SW.
R6 0757-0401 R: FXD MET
FLM
100
OHM
1%
1/SW.
R7 0757-0416 R: FXD MET
FLM
511
OHM
1%
1/SW.
RS 069S-3156 R: FXD MET FLM 14.7K OHM1% 1/SW.
R9 0757-0447 R: FXD MET FLM 16.2K
OHM
1%
1/SW.
R10 2100-1759 R: VAR WW2K
OHM
10% LIN 1/2W.
Rll
0757-0441 R: FXD MET FLM S.25K
OHM
1%
1/SW.
R12 0757-0199 R: FXD MET FLM 21.5K
OHM
1%
1/SW.
R13 069S-3154 R: FXD MET FLM 4.22K
OHM
1%
1/SW.
R14 0757-0416 R: FXD MET FLM 511
OHM
1%
1/SW.
R15 0757-02SO R: FXD MET FLM l.OK
OHM
1%
1/SW.
R16 0757-02S9 R: FXD MET FLM 13.3K
OHM
1%
1/SW.
R17 069S-3152 R: FXD MET FLM 3.4SK
OHM
1%
1/SW.
