HP 8690B Manual Change page 2

I.,.,,
Page 2. Model8690B
ERRATA (cont'd)
Page 5-21, Table 5-4, ALC BALANCE Adjustment:
Change step 13(f) to read: " ... to full countercloc}!:wise position ... Voltmeter reading should be approximately -5.600V."
Change step 13(g) to read: "Adjust A12R7 ALC Balance Adjust clockwise through dip (dip is 10 mV deep) until voltage is
same as noted in step f."
Page 6-2, Table 6-1:
Add asterisk to A2C3 to indicate "Factory Selected Part, typical value given."
Page 6-3, Table 6-i:
Add asterisk to A2R33 and A3C42 to indicate "Factory Selected Part, typical value given."
Page 6-5, Table 6-1:
Add asterisk to A4C3 and A4C4 to indicate "Factory Selected Part, typical value given."
Page 6-6, Table 6-1:
Change resistor A4R32 to HP Part number .2100-1759. No description change.
Page 6-12, Table 6-1:
Add asterisk to A11C6 to indicate "Factory Selected Part, typical value given."
Page 6-13, Table 6-1:
Add asterisk to A11R1, AllR17, and A11R40 to indicate "Factory Selected Part, typical value given."
Page 6-14, Table 6-1:
Change A12R3 and A12R16 to HP Part No. 0757-0059 R: FXD MET FLM 1 MEGOHM 1% 1/2W.
Page 6-16, Table 6-1:
Change chassis part F1 description to read "0.01 Amp."
Page 6-17, Table 6-1:
Change chassis part S9 HP Part No. to 3100-2622.
Page 6-18, Table 6-1:
Add "(LIGHT GRAY)" to the GLIDE: CORNER (HP Part No. 08690-4105).
Add 08690-40002 GLIDE: CORNER (MINT GRAY).
Page 6-19, Table 6-1:
Add 08690-00033 COVER ASSY: TOP (OLIVE GRAY).
Add 08690-00035 PANEL: REAR (MINT GRAY).
Add 08690-00034 COVER ASSY: BOTTOM (OLIVE GRAY).
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Delete Reference Designations XC1 thru XC12. HP Part Number and Description remains.
Page 7-3/7-4, Figure 7-2:
Change de levels on both sides of diode A10CR3 to negative(-) voltages.
Page 7-5, Figure 7-3:
Change designator of resistor A3R49 (located between +275V and emitter of A3Q5) to A3R69.
Change designator of capacitor A3C1 (located between connector XA3 pin 1 and ground) to A3C41.
Page 7-7 and 7-9, Figures 7-4 and 7-5, A4 Assy Component Identification Photo:
Substitute the attached A4 Assembly component Identification photo (Figure 6) for those shown in the manual.
Pages 7·11/7-12, Figure 7-6:
Add asterisk to resistor A2R33 to indicate "Factory Selected Part, typical value given."
Change the voltage levels on transistor A11Q2 as follows. Show +16.1 Vdc at the base and +12.9V at the emitter.
Change schematic to show the BLANKING output connector J9 (lower right-hand corner) wired to the wiper side of
BLANKING switch S13. Continuity between J12 pin 3 and the BLANKING output connector occurs only in the ON
position of S13.
Select resistors AllR1 and AllR17 with MARKER ADJ. controls, A11R2 and A11R18 centered.
Page 7-13, Figure 7-7:
Add chassis parts CR4 and CR5 between ground and cable going from connector P12 pin 20 to connector J4. CR4 anode
and CR5 cathode connect to ground.
Pages 7-17/7-18, Figure 7-9:
Reverse diode A6CR2.
Change designator of 10V zener diode A5CR5 (located between A5R5 and A5R6) to CR4.