23 Sep
2000
23 Sep
'00
1:39 a.m.
On Fri, 22 Sep 2000, Tony Duell wrote:
> > I've had an Epson HQX-10 with K-B and CP/M 2.2 disk for some
> > time but have never found a monitor for it. It has the 8-pin DIN
> > socket for both the K-B and the monitor.
> > Any idea what the monitor pin-out might be ?
>
> If it's the same as a QX10, then the pinout (from the hardware
> techincal manual) is :
>
I've been working with too many Macs lately. :^))
What the manual doesn't show is the layout of the pins, and there
are at least 2 conventions (one for each type of the DIN connector).
I think you may be reduced to identifying signals with a voltmeter
and 'scope (finding the power and ground signals would be a good
start, the others won't be that hard to distinguish).
See below for the QX-10/16 cable pinouts.
- don
Syncs are TTL level, the video signal is >4V
for full brightness,
1.0-3.5V for half-brightness, 0-0.8V for black.
-tony
QX VIDEO PINOUTS
Video pin-outs for: Video pin-ins for:
QX-10 or QX-16 QX-10 / 16 monochrome monitor
*+12V / Intensity 1------------4 +12V / Intensity*
Signal Ground 2--------|---5 Signal Ground
- not used - 3 |---6 Signal Ground
Horiz. Synch. 4------------3 Horiz. Synch.
Vert. Synch. 5------------2 Vert. Synch.
Red 6
Green 7 7 - not used -
%Video / Blue 8------------1 Video
Frame Ground E------------E Frame Ground
Video pin-outs for: Video
pin-ins for:
QX-16 CR-6700 monitor
*+12V / Intensity 1------------6 Intensity*
Signal Ground 2------------1 Signal Ground
- not used - 3
Horiz. Synch. 4------------8 Horiz. Synch.
Vert. Synch. 5------------9 Vert. Synch.
Red 6------------3 Red
Green 7------------4 Green
%Video / Blue 8------------5 Blue
Frame Ground E
*The QX-10 supplies the 12V to power the QX-10
monitor. The
QX-16 supplies an Intensity signal.
%When a monochrome monitor is attached, the Video
signal is
only available on the Blue.
Thanks guys. I wasn't aware it had color monitor ability. With it's
svelte low-profile and 2 FDDs a pretty classy machine for its day.
I imagine it would need a color card for the CR-6700.
Damn ! It provided power to the monitor. An added complication.
While I have a lot of multi-syncs and configurable monitors most
have their own PSUs and I wonder about the interrelationship in
the QX-10 circuity.
I acquired the K-B separately and looking at Tom Carlsons pics
I thought I had the wrong K-B even tho it had the same connector.
Turns out there were 2 versions as I understand it, one for Valdocs
and one for CP/M. The connector for the K-B has 1 center pin and
7 around the outside the same as the monitor. One troubling note
is that the QX-10 came with a separate coiled cable, with 2 male
connectors, each with the little tabs for pulling it out. The k-b
I acquired later has an attached cable with a similiar tab. The
coiled cable ends insert easily into the K-b socket on the QX-10
but the K-B cable only with difficulty. The obverse applies to the
monitor socket.
Keeping in mind Tony's recent comments on variations in 8-pin
DIN connectors, I compared the 2, but could find no dfference
except that the shell on the k-b cable DIN could be a fraction
smaller. I had thought originally that it could be slightly out-of-round
but now I am wondering if I do have the right Epson K-B. The K-B
is labelled m.Q503-A.
larry
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