HEWLETT-PACKARD COo );.

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HEWLETT-PACKARD COo );.

NOTE: This page provi'des a running history of changes for a mUlti-page drawing which cannot conveniently be re-issued completely after each change. When making a change, list for each page all before- and-after numbers (within reason; use judgement, and use

"extensive" 'revision note if loss of past history ·is tolerable) or retype complete page) and associate with each a symbol made up of the change letter and a serial subscript to appear here and on the page involved (there enc losed in a circ Ie, triangle, or other attention-getting outli,ne) .

Ltr REVISIONS DATE INITIALS

A

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Mod .. 1 No. qR 'lhRA J Stock No.

Title Schematic

De$crlption Date 6-1-85

By ,T; m :n. yn ~ ; c:'"l Sheet No. 1 ^of 4

Supenede$ Drawing No. 1\-98568-66501-'4 .

9320-3246 (6/75)

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DO NOT SCALE THIS DRAWING

UNLESS OTHERWISE SPECIFIED, DIMENSIONS ARE IN INCHES.

TOLERANCES .XX ± .02 .XXX ± .005

SEe CORP. STD. 608

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PACKARD

J3 POWER SUPPLY COIIIEC'l'OR

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PIN NUMBER PIN 1:

PIN 2:

PIN 3:

PIN 4:

PIN 5:

PIN 6:

PIN 7:

PIN 8:

PIN 9:

PIN 10:

PIN 11:

PIN 12:

PIN 13:

PIN 14:

PIN 15:

PIN 16:

'PIN 17:

PIN 18:

PIN 19:

POWER SUPPLY CONNECTOR

PURESET* (SEE ALSO SHEET 2) +5V

+5V +5V +5V +5V RS+ (+5V) RS- (GND) GND' GND GND GND GND +12V +12V GND GND -12V GND

J6: EXPANDER POWER (PIK 1 IS III UPPER RIGHT)

PIN 2: GND PIN 1: -12V

PIN 4: GND PIN 3: GND

PIN 6: GND PIN 5: GND PIN 8: GND PIN 7: GND PIN 10: +5V PIN 9: +5V PIN 12: +12V PIN 11: +12V PIN 14: +5V PIN 13: +5V PIN 16: GND PIN 15: GND PIN 18: +5V PIN 17: +5V PIN 20: PURESET* PIN 19: +5V

(SEE PURESET* ON SHEET 2 ALSO) .IIOTES:

1. PSPARE AND SPARE ON THE BACKPLANE HAVE .BEEN RENAMSD R. CLOCK AND SAS* RESPECTIVELY FOR RODIO. THEY THEREFORE DO NOT SHOW UP ON THE SIGNAL LIST EXCEPT UNDER THE NEW NAME.

2. THE SIGNAL BG3, SPARE 0 , SPARE1, AND SPARE2 ARE NOT ON THE MOTHERBOARD. THEY ARE, HOWEVER BUSSED BETWEEN ALL DID CONNECTORS AND BUSSED THROUGH TO THE EXPANDER.

TWO I/O CARDS COULD THEN TALK THROUGH THESE SPARES IF·

NECESSARY.

lESCRIPTION Expander Motherbd Schematic 3 of

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3. THE SENSE WIRES FOR THE +5V SUPPLY ARE TIED INTO THE +5V AND GROUND PLANE NEAR THE EXPANDER POWER CONNECTOR TO ALLOW THE POWER SUPPLY TO COMPENSATE FOR DROPS ACROSS THE

MOTHERBOARD.

/

DESCRIPTION Expander Motherbd Schematic 10 Jun 1985

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^DwgNo. A-98568-66501~~~PAGE 4 of

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