HP Portable PLUS - Figure Title Page

vi Contents
Portable PLUS Computer
Figure Title Page
6-18
6-19
6-20
6-21
6-22
6-23
6-24
6-25
6-26
6-27
6-28
8-1
8-2
8-3
8-4
8-5
8-6
8-7
9-1
9-2
9-3
9-4
10-1
10-2
10-3
10-4
10-5
11-1
11-2
11-3
11-4
11-5
11-6
12-1
12-2
12-3
12-4
12-5
12-6
12-7
12-8
Removing the Display Module
.. . . . . .. .... . . .. ..... . . . . . .. . . . . . . . . . . 6-13
Removing the Hinge Cover
...... . ....... ... . . . .. . . ............ . . . . . 6-14
Removing the Clutch Nuts
...... . .......... . . . ........ . . . . . ........ 6-14
Removing the Display Assembly . .
............... . ..... . . . . . . .. . . . . . 6-15
Removing the Clutch .
................ . .. . . . .. . . . ... . ... . .. .. ...... 6-15
Unlatching the Display Front
.......... . ............................ 6-16
Removing the Clutch
and Display Cable ......................... . ... 6-16
Premelting the
Solder . .. . ............... ...... ... . .... . .. . . .. .... . 6-17
Extracting the
IC ..... . . . .. .. ........ . .. . .. . . . ........ . . .. . ... . . . . 6-17
Removing the Case
Screws . . . ..... . . . . . . . ....... . .. .. . . . . . ... ...... 6-18
Removing the
PCA Screws . ............... . ................... . .... 6-19
Overview of Troubleshooting Procedures .
.......... ..... .. . . . ... . .... . 8-2
Menu for Built-In Diagnostic Program . . .
.... ..... . . . . . ........ .. ..... 8-5
Menu for Disc-Based Diagnostic Program
....... . ..... . ............ . ... 8-7
Menu for Diagnostic Module Scope Routines . . . . . . . . . . . . . . . . . . . . . . . .
.. 8-35
Menu for Disc-Based Scope Routines . . .. .. . .......... . . . . . ...... . ... 8-37
Connecting EPROM-Burner
Power Supply . . . . .. . ...... . ........... ... 8-39
Rechargers
.. . .. . ........ . . . ................... . . . ... . ........... . 8-40
Portable PLUS Exploded View .. . ...... . .. .... . . . . . . . . . . ... . . . ... . ... 9-2
Top Case Assembly Exploded View
.. . . . . ........................ .. . . . 9-4
Display Assembly Exploded View
.... . ..... . . . . . . . ....... . . . . . ..... . . 9-6
Base Assembly Exploded View
... .. ... ... . . .......................... 9-8
RS-232-C Connector Wiring Diagram
....... . . . . .. . . . . . .. . . .. ....... 10-10
Diagnostic Module Block Diagram . . ........ . ..... . . . ...... .. ....... 10-11
Diagnostic PCA Component Location Diagram ...... . ... . ... . ........ 10-16
Diagnostic PCA Schematic Diagram ....... . . . ... . .................. 10-17
SNALink/3270
Test Board Schematic Diagram ................ . ...... 10-19
Installing Feet Over Springs . ... . ............... . . . . . ............... 11-2
Memory
PCA Component Location Diagram (A and B Versions) ......... 11-6
Memory
PCA Schematic Diagram (A and B Versions) . .. . .. .. .... . .. . .. 11-7
Memory
PCA Component Location Diagram (Early C/D/E/F Versions) . . 11-13
Memory
PCA Schematic Diagram-Sheet 1 (Early C/D/E/F Versions) ... 11-15
Memory
PCA Schematic Diagram-Sheet 2 (Early C/D/E/F Versions) .. . 11-17
Memory
PCA Component Location Diagram .. .. ... . .......... . .. .. . .. 12-2
Memory
PCA Schematic Diagram .. . ................................ 12-3
Motherboard
PCA Component Location Diagram .................. . ... 12-5
Motherboard
PCA Schematic Diagram-Sheet 1 (CPU) ................. 12-7
Motherboard
PCA Schematic Diagram-Sheet 2 (I/O) .................. 12-9
Motherboard
PCA Schematic Diagram-Sheet 3 (Power Supply) ........ 12-11
Modem
PCA Component Location Diagram ................... . ...... 12-12
Modem
PCA Schematic Diagram ........ . ...... . . .. ... . ... . .. . ..... 12-13