HP Portable PLUS - Page 6

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Portable PLUS Computer
Contents v
Chapter
10.3.11
10.3.12
10.4
10.5
10.5.1
10.5.2
10.5.3
Page
Timer Test ................................................... 10-9
Sleep Test .. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 10-9
Service References .......... . ..... .. ........................... 10-10
Service Equipment ..... . ........... .. ....................... . .. 10-10
RS-232-C Test Connector . . .................................... 10-10
SNALink/3270 Test Board ..................................... 10-10
Diagnostic Module ..................... . ..................... 10-11
11 Product History
11.1 Introduction .............. .. ...... . .......... . ................. . 11-1
11.2 Backdating History
........................................ .. .... 11-2
11.3 Reference Information for A
and B Versions ........................ 11-4
11.3.1 Troubleshooting A
and B Versions ..... ......... ................. 11-4
11.3.2 Replaceable
Parts for A and B Versions. . . . . . . . . . . . . . . . . . . . . . . . . . . 11-4
11.3.3 Diagrams for A and B Versions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 11-5
11.4 Reference Information for Early
C/D/E/F Versions .................. . 11-9
11.4.1 Removal and Replacement for Early
E/F Versions . . ......... .... ... 11-9
11.4.2 Troubleshooting Early
C/D/E/F Versions ...................... ... 11-9
11.4.3 Replaceable
Parts for Early C/D /E/F Versions . . . . . . . . . . . . . . . . . . .. 11-12
11.4.4 Diagrams for
C/D/E/F Versions ...... . . . .............. . ........ 11-12
12 Diagrams
Figure
3-1
5-1
5-2
5-3
6-1
6-2
6-3
6-4
6-5
6-6
6-7
6-8
6-9
6-10
6-11
6-12
6-13
6-14
6-15
6-16
6-17
Illustrations
Title
Page
Recharger and I/O Receptacles . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 3-1
Portable
PLUS Block Diagram ..... ... ............................... 5-2
CPU Memory Map . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 5-4
Power-Up Sequence . ............... .. .......... . .................. 5-19
Removing the Battery Cover
........... . ............... . ............ . 6-2
Removing the Battery Terminal Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 6-2
Moving the Battery Jumper to
Off . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-3
Disconnecting the Battery .
......... .. ............................... 6-3
Removing the Battery
................ . ............................. 6-4
Removing the
Plug-In Drawers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 6-5
Removing the Bottom Screws
........................................ 6-5
Unplugging the
Top Case Cables ......... . ........................... 6-6
Separating the Case
... . .... . ....................................... 6-6
Unplugging the Modem
PCA .................. ... ............... . . . . 6-7
Removing the Motherboard
and Memory PCAs ........ ................ 6-7
Separating the Motherboard
and Memory PCAs ...... ........ .. ...... .. 6-8
RemOving the Hinge Cover . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
.. 6-9
Removing the Keyboard
Top Nuts .................................... 6-9
Removing the Keyboard Module .
..................... . ............. 6-10
Removing a Keycap .
........ ...... ........................ ... ... .. 6-11
Removing the Display Screws
............ . ............... . .......... 6-12