Model 5530
PS/55Z & PS/55

   5530-Z      PS/55Z  ( 5530Z286 )
 5530-S     PS/55Z  ( 5530ZSX )
 5530-T      PS/55
 5530-U/V  PS/55Z
 5530-W    PS/55
 5530-L      PS/55

Model 5530 initially started as Low-Priced PC which was targeted to personal market.   IBM Japan named the PC as " PS/55Z " to distinguish from PS/55 which was the  main stream of MCA line targeted to business market. 
Before IBM joined into personal users market, IBM made a marketing model named 5530Z and sold it to a company  called "Shinngaku-sha" ( seemed to be a company worked for educational field ) in Nov. 1998. 
    5530Z was speced as follows.
    CPU  :   80286-10MHz
    BUS  :   MCA
    RAM :   1MB ( MAX 4MB )
    Video:   PS/55 Display Adapter
    OS   :   JDOS 4.0
   (  No further information available at this moment 2002.02.16 )

After one year of research and surveillance with 5530Z-286, IBM Japan rearranged 5530Z-286 in many ways and introduced PS/55Z 5530-Sxx which is usually described as 5530-ZSX  ( and probably PS/55 5530-T was introduced together with 5530-ZSX according to the date printed on a sales brochure of 5530-T03/T06 ). 
Main target of  PS/55Z 30ZSX  was personal market which was almost occupied by NEC with their PC9801 series. 

 5530-SxxPS/55Z Model 5530ZSX   Released in Nov. 1989. 

 Specs ( Stage -I )
 Specs ( Stage -II )
 System Unit Diagram
 Accessing system board

 Photo image is took from a
 brochure dated 11-90. So it should
 be Stage-II.  Video cable is longer
 than stage-I system

PS/55Z 5530ZS is the first model of  MCA  5530 series (  Except 5530Z-286 which had been sold to closed market  for marketing purpose ).   In order to reduce retail price of expensive MCA line-ups, IBM Japan picked up i386SX CPU for PS/55Z.   The basic design might be derived from PS/2 Model 25Z  as you can see above photo.
12" color display was built in a body. Unlike PS/2 25Z, logic unit is slide-in type ( no need to set the system up-side down while accessing system board and inner parts ).  AND, PS/55Z 5530 is an MCA system. 

Information from PS/55 forum member. ( 2002.12.22 )
5530Z-SX is deviled to two groups, S0x and S1x (  Ed;  The former is refereed as stage-1 and the latter as stage -2 ).    All models use 386SX-16MHz.

Specification of  Stage -I Type S0x
 Type  HDD  OS
 S02  None  not included
 S03  30MB   not included
 SJ3  30MB   JDOS4.0 pre Loaded
 S06  60MB  not included
 SJ6  60MB   JDOS4.0 Pre Loaded

 Memory  :  2MB standard (  MAX on a planar; 4MB )
 FDD       :  2 Mode drive    (  1.44MB/720KB ) 

  56F9045 : 80387SX/16MHz Math co-pro
  38F7075 : 512KB VRAM Upgrade
  56F9046 : 2MB System memory kit IV
  23F3084 : 1MB System memory kit
  57F0112 :  3.5" internal FDD III ( 2 mode + 1.2MB/Read only)
  56F9007 :  60MB Hard drive ( ESDI )
  56F9006 :  30MB Hard drive ( ESDI )
  38F4816 : Cable, Video Signal Extension. 

Specification of  Stage -II Type S1x
 Type  HDD  OS
 S12 *1  None  not included
 S14  40MB   not included
 SJ4  40MB   JDOS4.0
 Windows model released in Mar. 1991
 SW4  40MB  DOS4.0/V & Win3.0 
  *1: S12 was equipped with 2 FDDs.

 Memory  : 2MB standard (  MAX on a planar; 6MB ) 
 FDD       : 3 Mode drive    ( 1.44MB/1.2MB.720KB  )

  56F9045 : 80387SX/16MHz Math co-pro
  64F9668 : 512KB VRAM Upgrade
  79F2536 : 4MB System Memory kit VI
  79F2556 : 2MB System memory kit V
  23F3084 : 1MB System memory kit
  79F1796 : 3.5" internal FDD VII ( 3 mode)
  79F1795 : 40MB Hard drive ( ESDI )
  74F1781 : 3.5" Optical Drive   ( Requires SCSI /A   )
  6450609 : 2-8MB 80286 Mem Expansion 
                 ( SIMM;  6450604/2MB, 6450603/1MB ) 

Different VRAM option P/N for Display Adapter were listed in system guide.  I'm not sure if there are two variations for Display Adapter /IV. 

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System Unit  ( from quick reference of  30ZSX  stage-I )
 1  Display and Front Cover Assy
 2 Label, Serial Number
 3 Bezel. Diskette Drive
 4 Bezel, Blank
 5 Flap Assembly
 6 Pedestal Assembly
 7 Cable, Signal Ground
 8 Power Cord (2P)
 9 Cover, Base
10 Security Key Assy
11 I/O Blaket- Blank
12 System Board
13 i80387SX, 16MHz Module (Op)
14 2MB Memory Card
15 Option Adapter Guide Block
16 1.44MB diskette Drive
17 Guide, Diskette Drive ( L & R )
18 Cable, Flat, for one FDD
19 Cable, Flat, for two FDD
20 Interposer Card ( Option Slot )
21 Display Adapter IV Card
22 Display Expansion Card ( Op )
23 Spacer ( Op )
24 HDD interface card
25 Fixed Disk Drive ( ESDI )
26 Guide, Fixed disk drive
27 Speaker Holder Assy
28 Battery

Accessing system board ( From users manual 2nd edition dated Nov. 1989.   )

slide the blue lock lever to the left and lock the system unit 
not to swing. 
Detach video connector from PS/55 Display adapter placed at the 
most upper slot ( Display adapter IV should be placed  there ).

Unscrew two knobs at the middle of rear panel.



Place the connector to the "foxhole" prepared at the support guide for the connector cover.

Note: The video cable is very short and will not reach to the middle

Grab the bottom edge of the base unit and pull it backward slowly 
till it will stop sliding.


Hold the base unit and pull it upward slightly and then slide it backward so that you can pull the base unit completely.


 End !

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PS/55 Model 5530-T

           Model 5530-T
The body, outer case  and  screen 
are all same with  model 5530ZSX. 
i386DX-20MHz CPU was given and 
the model was classified to PS/55. 

Want to see sales brochure ? 

A sales brochure of 1st model of 5530-T ( T03 & T06)  was  dated as 11-89 which means Nov. 1989.
If so, 5530-T03/06 was Introduced to the market together with 5530Z-SX in Nov. 1989.
Next models, T02/T04/T08,  were introduced in OCt. 1990.


486BL2-66 upgrade sub-board  from Kingston was available.  To use this parts, an interposer which changes the position  of  pin #1 is required.  Not sure for 486BL3 upgrade by Evergreen if it could be fit in  the planar.

Built-in Display 
12" color display ( long persistence phosphors  ) was integrated into the body.
   Character mode ; 1066 x725 dots
   Graphics mode; 1024 x768 dots

72pin SIMM socket x 3.  2MB/80ns parts is standard. 
One double-decked 4MB SIMM  P/N 23F2165 can be used. 
Total 8MB in combination of  2MB+2MB+4MB is the MAX on the planar according to users guide.

Actually 5530-T can take 24MB of RAM in combination of 3x 8MB 80ns SIMMs on the planar. Not sure if PC DOS 7 can actually see total 24MB of RAM.  I've tested JDOS5.0 + HIMEM.SYS in PC DOS 7.0 on the box but  I got only 16MB of RAM reported using MEM command ( this combination works for other 486 class PS/55s ). 

   23F3270  2MB ; memory kit  III
   56F9046  2MB ; memory kit  IV
   79F2566  2MB ; memory kit  V
   79F2536  4MB ; memory kit  VI
   79F2467  8MB ; Could be usable too.
   2-8MB memory expansion 23F3056 

ESDI ( DBA2 ) 30MB to 80MB depending on model-type. 
T02 was 2 FDD model and without HDD.

2 Mode drive for all models.

BUS Riser
5530-T  has only 3 MCA slots on it's riser card.  1 slot should be occupied  with a PS/55 Display Adapter, hence only 2 slots  are left  for users. 

Version 1.50 based on DOS/V is the latest.
In order to use XGA, XGA-2 and SVGA /A you need  to use  Ver.1. 50. 
The original Reference is based on JDOS and with the original version, option disks for SVGA or XGA can't be read. 
The Ref version 1.50 can be commonly used for model 5550-S/T/V, 5570-T/V, 5540-T, 5545-T. 

PS/55 Display Adapter IV ( 512KB VRAM; Optional 512KB VRAM board was available ) was used for 5530-T and 5530Z-SX.
Video cable from display unit is very short in its length and it will not reach except the most upper MCA slot where a stock  AVE Video Adapter IV should be placed. 
IF you are planing to use XGA or any other Cirrus based Video Adapter, you have to use one of lower two slots to which the video cable will not reach. Thus you have to use appropriate video extension cable with D-sub 15pin female on one end and D-SUB 15 pin male on the other end. 
 38F4816: Cable for Video signal Extension is listed in Service Summary for 5530-Z.

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2nd Generation of 30 line; 5530-U/V Models 



Newly designed 30 series was started with PS/55Z 5530-U. 
Built-in  display  was changed from 12" to flat type 13",  planar and  the BUS riser were also rearranged. 
30-T/S provided only  3 MCA slots but  newly designed body and planar/riser  provided  4  MCA slots though dimension was almost  same with the older body. 
3 mode FDD ( 1.44MB/1.2MB/720KB read/write capable ) was used for all models. 
Video cable from display unit is longer than older models so that the cable reaches to the second slot.

 ( 01/UV1/UW4/UW8)
386SX20 FDD x1,  ESDI HDD, XGA /A.
Windows3.0 was pre-loaded together with DOS J5.0/V for UW4/8 
 5530-UAx  IBM 386SLC20 This model was called  30U-SLC.
 ( V04/V08/VJ8/VY8)
IBM 386SLC20 Basically same with 30U-SLC but 30V was equipped with Japanese Display Adapter instead of  XGA /A. 
OS/2 J2.0 was pre-loaded on VJ8 & VY8.
IBM486SLC2-40 V28 & VA8 were equipped with a PS/55 Display Adapter/A.
VX8 & VXB were equipped with an  XGA-2 /A. 
OS/2 J2.0 was pre-loaded on VA8 & VXB. 
5530-V2  was the last  386 class model.

U and V planar are almost same.  386SX20 on a U planar was changed to IBM386SLC20 nad J1 beside the power connector is shifted beside U1 like V2 planar below. 
V2 planar has aux power outlet J22.  J10 on U/V planar is not seen on V2 planar . Y3 ( CPU clock OSC ) is shifted backward. 

    5530-U (  and V  )                                                                    5530-V2 
U6    95F4436
U7    20R6
U8    i386SX-20 
U9    92F1495
U24  N82077A
U36  91F7490
Y3  40.00MHz
Y4  24.00MHz
Y5  14.3185MHz
Y6  22.1184MHz
U6    95F4436
U7    20R6
U8    IBM486SLC2-40 
U9    92F1495
U24  N82077SL
U36  91F7490
Y3  40.00MHz
Y4  24.00MHz
Y5  14.3185MHz
Y6  22.1184MHz

BUS Riser Card
 I think the riser outlined left is for 5530-V2 .

 there are another 16-bit riser with different P/N which 
 has silk printings as follows.

     P/N 95F4218
     EC  C80670A

 Maybe it's for 5530-U/V .

 Basically these risers are same except P/N 95F4218
 has 2 registers and 2 capacitors and 2 rework wires
 on the solder side of the PCB. 


 Minny Mouse
 80387SX-20 co-pro
  120,000     60,000
 2MB Memory kit
    50,000     30,000
 4MB Memory kit
  100,000     56,000
 8MB Memory kit
  200,000   104,000 
 3.5" Diskette Drive 
 3.5" Diskette Drive  ( 4Mode Drive )
 80MB Hard Drive ( ESDI )
 160MB Hard Drive ( ESDI )
 100MB SCSI Hard Drive  *1
  200,000   140,000
 200MB SCSI Hard Drive  *1
  300,000   240,000
 3.5" Optical Drive ( MO )
  298,000   298,000
 SCSI Adapter /A  ( 16bit )
 SCSI Adapter -II/A ( 32bit )
    88,000     88,000
 TokenRing Adapter 
 TokenRing 16/4 Adapter
  142,000   142,000
 Ethernet Adapter 10Base 2/5 
 Ethernet Adapter 10Base T/5
 MultiProtocall Adapter  IV /A
 Modem Adapter /A 300/1200/2400bps
  ...Hard to believe there were ordinal users who could buy such expensive peripherals for personal usage....... 

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Real 486 planar which was developed for desktop model 5550-W was used for 5530-W.
CPU 5530-W0x ; i486SX-20 
        5530-W2x ; i486DX2-40
Note that 5530-W is IML system. 

  i487SX co-processor : 07G3013 , Price  200,000
  486-20/40 Processor Upgrade Option : 35G2996 , Price 280,000 

5530-L ; The last Emperor of  "ALL-In-One-BOX" 30 line of True MCA 

5530-L was the last model of  PS/55 30 series. 
It's really a nice machine with a  486 class L planar and integrated 13" color display. 
IBM 486-BL2/66 was soldered on the planar and a ZIF socket for an  overdrive processor  was ready on the planar. Unfortunately the socket is not PODP ready,  it's a socket 1.

If you have a  R  planar for desktop  5551-R  which  has ZIF socket 3,  you 
can  make  your  own  "5530-R" which  was  not  released  by  IBM Japan.

5530-L Specification ( Stolen from IBM Web Site )

 Planar         Same with 5551-L except Power connector
 CPU            IBM BL486DX2-66 with Overdrive socket ( ZIF socket 1 )
                    Accept ODPRDX4-100. DX4-100.  Also accept am5x86 and Cyrix with voltage interposer.
                    PODP can't be used for this model.
 SIMM          70ns True parity SIMM x 4 slots 
 HDD            IDE
 FDD            3 Mode drive ( 1.44MB/1.2MB/720KB )
 MCA Slots   32bit x4 ( Full size x 3, half size x 1 ) 
 Video          Type LXC : XGA-2 
                   Type L0C : PS/55 Display Adapter /A ( Possibly DBCS D/A /NI-J )
 Reference    Ref. Ver.1.21   ( Same reference with 5551-R/L and 5521-Y )
 Diag            Diag. Ver.1.21 ( Ditto )

32-but BUS Riser

 Dimensions of the riser card are same with 16-bit card.

 Slot #2 is BVEC and XGA-2 or DBCS D/A /NI-J should
 be installed  on this slot.

 I suppose 5530-W uses same riser card.


  Pictures of my 5530-L ( actually it should be named as "5530-R".  I  have R planar in the box.. )

Front view

   4 slot PCMCIA /A can be seen in the left bay where a FDD
   will sit  in stock condition. 
   To install 4 Slot PCMCIA Adapter, FDD should be moved to the
   right bay. This adapter can be used solely in this newr 30 body.
   Unfortunately I don't have a front bezel to mate with this adapter.

 Rear view
   Base unit is half-pulled out.
Base unit 

From the bottom, you can see ;
1)  4 slot PCMCIA/A, 
2)  XGA-2,
3)  Madge Smart RingNode 16/4, 
4)  Short PS/2 Adapter/A for Ethernet networks with SMC chip.

DSAA 720 is loaded at the HD sled. 

Thus this machine should be named as 5530-RX7;
   R planar with  XGA-2 and 720MB HD.

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