2140, 2142 Type A-1 System Board

  The amplifier card BIOS in the system board must match the amplifier card installed
see -> Amplifier Card BIOS

J1 Fan Connector
J2 USB connectors (top = USB1, bottom = USB0)
J3 Internal VGA connector

J5 DIMM connector (Bank 2)
J6 DIMM connector (Bank 1)
J7 DIMM connector (Bank 0)

J8 Primary Hard Disk IDE (HDD 1, HDD 2)
J9 Secondary Hard Disk IDE (HDD 3 or CD/DVD-ROM, HDD 4)
(See -> HDD drive jumper settings)

J10 Monitor signal connector
J11 SO-DIMM socket (video upgrade)
J14 VESA video feature connector
J16 PCI 3 connector
J17 PCI 2 connector
J18 PCI 1 connector
J19 ISA 3 connector
J20 ISA 2 connector
J21 ISA 1 connector
J23 Parallel/Serial Port connector (top = parallel, bottom = serial)
J24 Mouse/Keyboard connector (top = mouse, bottom = keyboard)
J26 Diskette drive connector
J27 AC-3 connector
J29 Multimedia connectors (top = MIDI/Joystick, bottom = audio out, in, mic)
J30 CD/DVD-ROM audio connector
J31 TV-In connector
J32 Modem audio-In connector (Type 2142 only)
J33 Media Console connector
J34 Power connector
J38 Power/hard disk LED connector
J39 External speaker jumper/connector (Normal 1-2)
J41 Audio amplifier connector

JP1 Processor type (Normal 1-3 and 2-4)
JP2 Processor type (Normal short)
JP3 Core/Bus Frequency Ratio (see table)
JP4 Internal VGA (Normal 1-2)
JP5 Internal VGA Clock and INTA# select (Normal 1-3 and 2-4)
JP6 CMOS, Power-on Password Reset (Normal = 1-2, Clear = 2-3)
JP11 Diskette Write (Enable = 1-2, Disable = 2-3)
JP12 CPU BUS Frequency (Normal 1-2 and 2-3)
JP21 CS4610 Interrupt (Normal 1-2)
U1 Processor

P55C Processor Speed - Type A-1 System Board

The Processor speed jumpers are set to the manufacture Type and Model of the Aptiva computer. Changing jumper settings are not supported and might cause system failures.

P55C	Jumper	166 MHz	200 MHz	233 MHz
Processor Speed MHz	JP3 JP12	1-3, 2-4 1-2, 3-4	3-5, 2-4 1-2, 3-4	3-5, 4-6 1-2, 3-4

System Memory

The system board support 168-pin 60ns, Gold SDRAM,
64 bit Dual Inline Memory Module (DIMM).

Maximum memory supported is 384 MB.

DIMM Identification

168-pin memory DIMMs can usually be identified by the information on the chip modules. (for example, 2Mx64, 60 ns, EDO). To determine the DIMM capacity from the above example, divide 64 bits by 8 bytes and multiply this result by 2M, hence DIMM = 16 MB.

1Mx32 is Non parity and 1Mx36 is Parity memory. DIMMs that are not clearly labeled cannot be identified other than by part number. Consult the DIMM manufacturer documentation to identify DIMMs.

Refresh Rates and Monitor Frequencies

The following table list the max vertical refresh rates for the Type A-1 system board, which contains a Trident 9750 video chip with 2 MB video memory.

Resolution > Color	640 x 480	800 x 600	1024 x 768	1280 x 1024
256	85 Hz	85 Hz	85 Hz	60 Hz
64.000	85 Hz	85 Hz	85 Hz	60 Hz
16.000.000	85 Hz	85 Hz	85 Hz	60 Hz

Please see the LEGAL  -  Trademark notice.
Feel free - send a   for any BUG on this page found - Thank you.