P12 Floppy Controller Header Pinout
P13 Operator Panel Controller Pinout
P15 Speaker/Switch Assembly Pinout
2MB ECC?? 56-pin SIMM.
53F7913, individual memory modules are 02G2871.
Power Supply P/N 03F0420 / KRON (?) 55JET064
Global Manufacturers' Services Valencia, Spain
Uses a Model 90 form factor PSU, but wimpier. No HD power plugs.
Input: 100 - 240 V, 1.6 - 0.78 A, 50 / 60 Hz
Output: 63.8 W
Uses an NMB Boxer fan, 3610NL-04W-B10 12 V, 0.13 A, ball bearings, brushless.
Note: 64F0204 / 64F3197 BUT it has the Mitsubishi MF356F-822MB "*" floppy.
In IBM's eyes, there's no need for more than a one device cable... Bay B has the LCD display, Bay D has the "glove box" Bay C is inaccessible.
Why waste good money on even a twist? There can only be one... floppy [Highlander]. Why use a three-device cable like the Model 90 if you will only be able to use one device... ever...
Note that the 5494 does have the Adapter Card-Guide Assembly 33F8363. It does not have the 92mm Base Fan.
The operator panel consists of a keypad, an LCD, and four LEDs (Ready, Call 5494 Service, See PD Guide, and Test Mode) that indicate operating status. An 8051 controls the LCD, LEDs, and the keypad. Communications between planar and operator panel are through a serial port.
The LCD has 16 character positions. It is blank and displays a cursor in the rightmost position when not in use. When the 5494 operator panel is in use, there will always be a message code (002-01 in the above example) displayed on the left-hand side of the LCD. The message codes are described in "Message Codes" in topic 3.1. When the 5494 is in use, the LCD can also contain, in the data field on the right-hand side of the LCD, a system reference code (SRC) or information as defined by the message code. In the example, the data field contains an SRC.
If an error occurs before or during normal operation, both a message code and an SRC will be displayed on the LCD and an LED will be lit. If more than one error occurs during normal operation, the message codes and SRCs will cycle at 3-second intervals. If the error clears (a link is established after a failure, for example), the message code and SRC will be removed from the LCD by the 5494.
The keys on the keypad allow commands to be entered and sent to the 5494, and include:
REQ Initiates a request function
If you hose the refstamp, the 5494 will not boot up and the error code '003-04 1' is displayed on the Op Panel.
Normal Power-On Display Sequence
Soon after the 5494 power pushbutton is set to ON (|):
Model 001 or Model 002 to Model EXT. Model 001 and Model 002 can be made functionally equivalent to Model EXT by installing level 3.0 microcode or later.
Cables For 5494
72X5645 Cable Asm,Twinaxial Workstation Adapter (Ports 0-3)
Note: The Twinaxial Workstation Attachment cable connected to the lowest number slot supports twinaxial ports 0-3. The Twinaxial Expansion Adapter, if installed, supports twinaxial ports 4-7.