8533r12m.exe 12MHz (no external video)
8533r16m.exe 16MHz (external video)
NT Users! If you get an OS/2 call and failed extraction, use "forcedos 8533r1xm"
ZG91-0257 IBM PS/2 Model N33SX
ZG92-0162 IBM PS/2 Model N33SX (8533-A33 & 8533-A35)
8533SX Repair Center Maintenance Information
personal experience with the N33 is from Peter Wendt. I
only did the PS2.EXE
N33 16MHz Planar, Top
Some infos on the connectors:
CN3 / CN3 connect the backplate to the sysboard.
CN14 (located over the memory connector towards the
board edge) + CN15
are the IDE HD connectors for a strange split
cable Your CN14,
seems to be CN13 in fact and is the standby backup
battery connector (used
during battery changes)
N33 16MHz Planar, Bottom
CN6 internal modem connector board
CN7 LCD video port
CN8 main battery port
CN9 speaker port
CN11,12 internal keyboard connectors
CN13 resume / suspend LCD cover switch
IC56 outline for 387SX-16
OTB1 erase startup password / clear CMOS
SW1 (pushbutton). No idea what purpose. Shows no reaction when you push it.
Almost correct, but Peter is complaining about his own scan when he say I got some of it wrong...
The (?) ROM is a PLCC OTP-version of the 27C1001 (1284K x 8). Not eraseable - One Time Programmable (a PROM so to say). .
Err ... very theoretically yes. How are your skills in SMD soldering ?
The 387 sits very close to the 386SX and
you only need
to "pull wires" to an empty spot on the sysboard.
Obviously they designed
the system *with* the 387 - but that thing was darned
expensive back in
'92 or so - so they left it away. You won't run
AutoCAD on a 386SX-class
Today's verse is from the book of Peter of Lemgo (surnamed Wendt)
The 8533 N33 was originally a machine
developed by IBM
Japan for domestic markets. After the arch-rival Compaq
brought the E-Lite
386 laptop series IBM was forced to bring out a
IBM Japan at that time had about a dozen different
laptops and notebooks
G13 unit it has no external video port and 386SX-12, a -G15 has external video port and 386SX-16. Max. memory 6MB, B/W LCD 10.4", 640 x 480 / 16 greyscales. HD either 40 or 80MB.
I have a -G15. They have some "classical defects": either don't work at all, or work only on battery or AC power but not on both. Batteries die very soon, short runtime on batteries anyway. HD can be replaced against standard 2.5" Laptop IDE drive of either size up to 8GB - given you have a good disk-manager software. (Mine has an 850MB currently installed).
I have an 8533-G15 myself. Bought it at german ebay - and guess what: one of the fuses was blown so that the machine ran on batteries only. But not for long of course and the batteries needed to be charged externally outside the machine. And the batteries were both on their last leg.
I replaced the blown fuse, replaced the tiny 80MB HD with -currently- a 340MB type I had around (it *did* run with a 1.2GB as well - but I needed that drive for a different project) and I crapped out one of the dead batteries and replaced the cells. They are "3/4" types and all six cells cost about 30 Euro. Now the machine nicely runs for about an hour on battery.
Set Feature program . PS2.EXE can be used as a menu driven program or a line command. You can even invoke this function from a batch file. This selection copies the following sample batch programs and a utility program which can be used in your operating environments
(DOS, OS/2, or DOS OS/2 DUAL).
* DEFAULT.BAT, DEFAULT.CMD: These programs set all the operational features to the default values. The default assumes external power (AC or Car Battery) supply operation.
* TRAVEL.BAT, TRAVEL.CMD: These programs set all the operational features related to the power supply by the Rechargeable Battery to the values that make the battery life as lengthy as possible.
* PRINTCOM.BAT, PRINTCOM.CMD: These programs turn off and on the parallel, serial, and communication interface connectors at the same time.
* EXT_PWR.EXE: This program detects what power source the computer is using, and returns two kinds of codes depending on the power sources. You can use the return codes as the conditions as to manage the power usage.
* SETUPPWR.BAT, SETUPPWR.CMD: This is a sample program which uses EXT_PWR.EXE. It runs the TRAVEL batch program if the power is supplied by the Rechargeable Battery or if the power is supplied by AC or Car Battery adapter, it runs DEFAULT batch program.
* DISCHRGE.BAT: This program is used to discharge the
N33 FDD Innards
Had the time today to check out the N33SX FDD ... here's the result.
Drive plug - 34pin Berg
+-+ +----_-----------+ +-------------_--+ 33 | o o o o o o o o o o o o o o o o o | 1 34 | o o o o o o o o o o o o o o o o o | 2 +-----------------------------------+ (View from the front)
System plug - 26pin Mini Centronics
+-----------------------------+ / \ 25 \ # # # # # # # # # # # # # / 1 26 \ # # # # # # # # # # # # # / 2 \ / +-------------------------+ (View from the front)
System to FD Pinout
FDD is a Panasonics JU-237 A03W (P/N 72X6074), +5V only 0.8A.
However I'd tested the N33 with 2 different +5V-only
Both worked with R/W/ format 1.44MB media. Hope this helps a bit.