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The USB private cradle will be
made the USB/ serial common!
2000.10.4
Notice
As for copyright of all information which is
published here is a page writer.
As for publication and
the like to reprinting / the copy / the magazine please do not do with
no permission.
When this remodelling is done, guarantee
of the manufacturer stops being effective.
This
remodelling the result, what trouble and the damage which do were
received assuming,
As for me who am the writer it cannot
owe all responsibility.
Please execute in the
responsibility of oneself.
This page makes link free,
but when at the mail you can inform, it is
delightful, is.
Modification past record
-
The connection of the DSub-9pin was part by mistake. Please refer to
the text.
Well, preface it will start remodelling
promptly with as this extent.
Feature of this
remodelling connects the coupling cable and it is just to change and
mode change of the USB and the serial being automatic to be done.
Processing which bores the hole through the cradle itself
altogether is unnecessary.
After all, we would like to
finish cleanly, as a engineer is, don't you think?. You tried
inserting the コダワリ in finishing smartly.
Verification of the signal is done with the tester of the oscilloscope
and FET input.
At environment below it did operation
verification.
- PC/AT compatible machine (Windows98) USB
connection and serial connection (2000/10/5)
- Toshiba
Libretto50 (Windows95 OSR2) with serial connection (2000/10/6)
- Apple PowerMacintosh7600 (MaccOs9) with serial connection
(2000/10/6)
-> The operation report is welcomed!
0. Preparation
- Tools
- 2.6mm +
driver
- Pincette
- Nipper
-
Cutter knife
- Solder iron (for electronic construction of
25w)
- The solder - the wick (the solder it inhales and
takes the line)
- The tester (be sure to do wiring check)
- Material
- General-purpose switching diode
1SS133 and the like 2 - DSub-9pin connector
(female) with housing
- MiniDin-8p (female)
The cable attachment (the keyboard cable extension and the like for
the old PC9801) is convenient - MiniDin-8p (male)
2. As for 1 even with remainder above OK. Already you use 1
to remodelling the USB cable. - Tie-up
You
use to locking the cable in the cradle.
1. The main
baseplate it removes
Disassembling the cradle, it
removes the baseplate of the photograph under.
This
baseplate has entered into the part where the HotSync switch has been
attached.
You acquire the tip/chip resistance of 0 ohm
to the part which attaches the red circle, or the jumper do with the
suitable line. They are 5 places at all.
Afterwards,
wiring is removed from 9 lands which line up into the direction under.
The number is pin number.
In the one for mode change of
the 2.USB/ serial the diode you attach
The diode 2 is
connected in series in the red circular part of the photograph under.
Anode side of the diode is acquired to the tip/chip.
The other part it does not short-circuit, the sea urchin please take
and turn. In addition, because the case hits to the vicinity of the
LED,
The case temporary trying teaming up, it decides
the place.
[ Supplementation 2000/10/6 ]
The connection point of the additional diode is the foot of the right
side of the tip/chip diode. Immediately side has 0 and printing the
tip/chip resistance which
So it is not. The photograph
of one ago comparing by sight, please verify the connection point.
The USB cable is removed every connector. After removing,
the solder - it makes the hole penetrate with the wick.
The baseplate preparation was prepared with this.
3.
Is attached on cradle side the connector equipped cable which
This time the female of the MiniDin-8pin was used with stock
relationship. If it is available, the 9pin is better, is.
This cable was in the junk box, it is the keyboard cable
extension for the old PC9801 series.
4. The connector
equipped cable it wires in the baseplate
Because the
photograph in the chart and the reverse side was placed under, that it
wires in reference.
It designated pin connection as as
in the below-mentioned chart.
| CRADLE side |
Signal name | MiniDin-8pin | Color of line
|
|---|
| 1 | USB+ | 1 | Brown
|
| 2 | USB- | 2 | Red
|
| 3 | GND | -- | --
|
| 4 | GND | SHELL | Net
group |
| 5 | CTS | 3 |
Light |
| 6 | TXD | 4 |
Yellow |
| 7 | DTR | 5 |
Green |
| 8 | RXD | 6 |
Blue |
| 9 | RTS | 7 |
Purple |
| Di | U/S | 8
| Black |
5. The baseplate in the cradle you
reset
The place where the red circle is attached is in a
state where tie-up is wound in coming out prevention of the cable.
When power is applied to the connected part of the baseplate,
because the マズイ, power that tries is not transmitted in.
The line 噛 you see and the being packed and the part pay
attention short and sufficiently assemble the cradle as before.
The 6.USB cable is processed
The connector
which from the cable has stuck to the baseplate of the cradle is cut
off.
And, it processes terminally. It divides into 5 of
white / green / black / red / the nets, but as for red you do not use
being
Several millimeters leaving, it truncates shortly.
Because it connects black with the net together, the sheath is peeled
in the long め.
White and green about 2 millimeters
peel the sheath, let flow the pretinning.
The
MiniDin-8pin connector is connected to the 6.USB cable.
The photograph and below-mentioned pin connection it wires in
reference.
When attaching the SHELL of the MiniDin-8pin,
net group and the black bar that try contact the SHELL.
Attaching the cover to the MiniDin-8pin connector, it finishes and is.
Before connecting the cable, the cover
Way you do not
forget that it passes. When you forget, considerably it becomes sad.
| USB cable | MiniDin-8pin |
|---|
|
White (USB+) | 1 |
| Green (USB-) |
2 |
| Black (GND) | SHELL |
| Net
group (GND) | SHELL |
Operation check of 7.USB
Preparation of the USB was prepared to here. Before entering
into the serial, it will check.
You try whether you can
connect the MiniDin of the USB cable, and the MiniDin of the cradle
sort can use until now.
If the OK, next you go
8. Production of serial cable (preparation)
Those where you prepare are the MiniDin-8pin male equipped cable and
the DSub-9p female connector.
First as written, because
it is the keyboard cable extension of the old PC-9801, on cradle side
The remainder which it can connect was used.
It processes the cable terminally. Because you do not use 1
pin and 2 pins of the MiniDin-8p,
It cuts off in
suitable length. In addition, when black (USB/SERAL change) it
connects to the GND, as for the cradle
Because it
changes to serial mode, it connects with net group.
9.
Production of the serial cable (the DB-9 is connected)
The photograph and the chart under in reference, the MiniDin-8pin male
and the DSub-9pin are connected.
| MiniDin-8p
| Color of line | DSub-9pin |
|---|
| 4 (TXD)
| Yellow | 2 (RXD) |
| 6 (RXD)
| Blue | 3 (TXD) |
| SHELL (GND) +8 (U/S)
| Net + black | 5 (GND) |
| 5 (DTR)
| Green | 6 (DSR) *1 |
| 7 (RTS)
| Purple | 8 (CTS) |
| 3 (CTS)
| Light | 7 (RTS) |
(*1) Modified at
2000/10/13
10 Completion of the cable it is
The beige the left black for the serial and the right is the
for USB.
Respectively, when it connects to the
MiniDin8pin connector of the cradle, it moves with the respective
function.
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