2524 System Board

System Board, Bottom
System Board, Top
Open Case

Note: System Board bottom is shown first because there are more components...


System Board, Bottom FRU 39H6894

Blk Black Screws
CN8 Digitizer Cable Connector
CN16 LCD Cable Connector
CN600 Battery 1 connector
CN601 Battery 2 connector
D15 Power On indicator
D13 Battery 2 status
D12 Battery 1 status
D14 PCMCIA status indicator
Cut Out Hole for LCD Power Connector
F1 2.5A fuse
F2 1A fuse
F3,4 2A fuse
F5 5A fuse
Spk Speaker
U1 Opti 82C463
U18,19 Hitachi 51S4260ALTT7R
U21 WDC WD90C24A2-ZZ
U22 BIOS?
U25 Dallas DS12885S
U30 Cirrus CL-PD6710-VC-B
U33 NS PC87312VF
U34 WACOM W7002F-MSK3J
U35 WACOM W6003F
U51,52 NEC D65626GC097
U59 Maxim MAX211CAI
X1 32K5JS xtal (32kHz?)
Y1 16000 (16 MHz?)
Y2 5000 (5 MHz?)
Y5 32K5JS (32 kHz?)
Yellow Yellow screws

Note: The yellow screws hold the PCMCIA socket frames to the board. Do not remove them.

U1 Opti 82C463 Single Chip Notebook Data Book
U18,19 Hitachi 51S4260 262,144-word x 16-bit DRAM Datasheet
U21 WDC WD90C24A2 High Res VGA LCD Controller for Low Power Datasheet
U25 Dallas DS12885S Real-Time Clock Datasheet (DS12885S is SOIC)
U30 Cirrus CL-PD6710-VC-B ISA to PC Card Host Adapter Prelim Datasheet
U33 NS PC87312VF FDC w/ Dual UARTs, Parallel Port, IDE Interface Datasheet

Note: Cirrus CL-PD6710 (on bottom side) is for single slot, Cirrus CL-PD6720 (on top side) is for a dual slot.

System Board, Top

BT1 Backup Battery 2016 Lithium
CN1,2 CPU board connectors
CN3 Memory board connector
CN5A,6A Dual slot PCMCIA sockets
CN12 Port Replicator connector
CN602 Sub Battery Connector
CN603 Inverter card connector
J600 DC power receptacle
JP1 solder pads for 2 pin header
JP2 Password Erase header
JP3
F1,2 5A fuse
PTC Heat sensor?
SW1 On/Off
U22 BIOS?
U24 Dallas DS1267S-010
U29 Cirrus CL-PD6720-QC-B
U46 NEC D78052GC3B9
X2 14.318 MHz xtal

U24 Dallas DS1267S-010 Dual Digital Potentiometers Datasheet
U29 Cirrus CL-PD6720-QC-B ISA to PC Card Host Adapter Prelim Datasheet
U46 NEC D78052GC3B9 8-bit Single Chip Microcontroller Datasheet

Note: Cirrus CL-PD6710 (on bottom side) is for single slot, Cirrus CL-PD6720 (on top side) is for a dual slot.


Open Case

Remove the two plugs and the screws underneath.
Remove the batteries and the three screws below.

Content created and/or collected by:
Louis Ohland, Peter Wendt, William Walsh, David Beem, Tatsuo Sunagawa, Jim Shorney, Tim Clarke, Kevin Bowling, Tomáš Slavotínek, and many others.

Ardent Tool of Capitalism - MAD Edition! is maintained by Tomáš Slavotínek.
Last update: 23 Oct 2021 - Changes & Credits | Legal Info & Contact