HP 2113B service manual / schematics

[Bob Shannon]

Its probably a little high because the I/O bus is unloaded.

I've seen some variation on this supply voltage on my machines, but
all of them work fine.

( I currently have 7 working 2113's, as well as a pair of 2116's, two
2115's, and a 2115 as well).

Let me know if you need a hand getting the machine to boot some
useful software.  I can supply you with EPROM's (or EEPROM's)
with bootable software, and information on how to build a simple
paper tape reader emulator that reads them.

You can also boot your 2113 from a PC's serial port with the
right loader ROM and a BACI serial interface board on the HP.

----- Original Message ----- 
From: "Peter Brown" <peterbrown10 at hotmail.com>
To: <cctalk at classiccmp.org>
Sent: Tuesday, November 16, 2004 9:46 PM
Subject: Re: HP 2113B service manual / schematics


> Hi Bob and Jay,
>
> Thanks for replying to my post.  I now have a pile of schematics to try to 
> understand!
>
> Bob: Thanks for the info on the -2 volt rail - I'm not going to be running 
> any 2116 hardware so I guess I should be OK.
>
> I'm still intrigued as to why my rail should be out of spec (the service 
> manual is pretty precise about the rail limits).  If any one has access to 
> the schematic for the standard power supply for the 2113B (i.e. without 
> the battery back up option) then I'd be very interested in getting hold of 
> a copy.
>
> Cheers
>
> Peter Brown
>
>