HP ProSignia 120 Maintenance And Service Manual page 4

chapter 5
R R
EMOVAL AND EPLACEMENT
5.1 Serial Number .............................................................................................................................. 5-1
5.2 Disassembly Sequence................................................................................................................. 5-2
5.3 Preparing the Computer for Disassembly .................................................................................... 5-3
5.3.1 Disconnecting the AC Power................................................................................................ 5-3
5.3.2 Battery Pack Removal........................................................................................................... 5-4
5.3.3 MultiBay Devices ................................................................................................................. 5-5
5.3.4 PCMCIA ............................................................................................................................... 5-6
5.4 Computer Tilt Feet ....................................................................................................................... 5-7
5.5 Internal Modem............................................................................................................................ 5-8
5.5.1 IR (Infrared) Module .......................................................................................................... 5-10
5.6 Hard Drive.................................................................................................................................. 5-11
5.7 Keyboard .................................................................................................................................... 5-14
5.7.1 Keyboard Removal ............................................................................................................. 5-16
5.7.2 Memory Board .................................................................................................................... 5-17
5.7.3 Lithium Real Time Clock Battery ...................................................................................... 5-20
5.7.4 Optical Disc Bay ................................................................................................................. 5-22
5.8 Display Assembly ...................................................................................................................... 5-23
5.8.1 Hinge Covers ...................................................................................................................... 5-23
5.8.2 Display Assembly ............................................................................................................... 5-25
5.9 Top Cover Assembly.................................................................................................................. 5-27
5.9.1 DC-DC Converter and Audio Board Shield ....................................................................... 5-31
5.9.2 DC-DC Converter ............................................................................................................... 5-32
5.9.3 Audio Board........................................................................................................................ 5-33
5.9.4 Fan....................................................................................................................................... 5-34
5.9.5 System Board ...................................................................................................................... 5-35
5.9.6 Integrated AC Adapter........................................................................................................ 5-38
chapter 6
S
PECIFICATIONS
6.1 Computer...................................................................................................................................... 6-2
6.2 Display ......................................................................................................................................... 6-3
6.3 Hard Drive.................................................................................................................................... 6-4
6.4 Diskette Drive .............................................................................................................................. 6-5
6.5 LS-120 Drive................................................................................................................................ 6-6
6.6 ZIP Drive...................................................................................................................................... 6-7
6.7 CD-ROM Drive............................................................................................................................ 6-8
6.8 DVD-ROM Drive......................................................................................................................... 6-9
6.9 Battery Packs.............................................................................................................................. 6-10
6.10 Convenience Base II ................................................................................................................ 6-11
6.11 External Power Supplies .......................................................................................................... 6-12
6.12 System Interrupts ..................................................................................................................... 6-14
6.13 System DMA............................................................................................................................ 6-14
6.14 System I/O Address ................................................................................................................. 6-15
6.15 System Memory Map............................................................................................................... 6-17
P
ROCEDURES
Contents v