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3 Diagnostic Programs
3.9 Communication
54
Satellite M40/M45 TECRA A4 Dynabook Vx/4 Maintenance Manual
3.9 Communication (COMM)
Subtest 01
LPT
This test item is to check whether there is open or short circuit issue in the external
pins by looping back the external pins, controlling the voltage of each data pin,
control pin and status pin.
The test requires an external connector to insert into the tested LPT port. Below is the
connector's description.
Fixture Description:
Note: (1)~(17) -------- Pin number
PD0~ PD7--------Data Line
Status Line
--------
–ERROR(S3), +SELECT(S4), –ACK(S6), +PE(S5), +BUSY(S7)
Control Line
--------
–AUTFD(C1), –PINIT(C2), -STROBE(C0), –SLIN(C3)
1.
Register Check
Check whether the data register and control register works normally.
2.
IRQ Check
Check whether LPT interrupt works normally.
3.
External Loop back
Check whether there is open or short circuit issue.
4.
ECP Mode
(9) + PD7
(15) -ERROR
(5) + PD3
(1) - STRO BE
(10) - ACK
(8) + PD6
(14) -AUTFD
(7) + PD5
(13)
(6) + PD4
(16) -PINIT
(2) +PD0
(11)+ BUSY
(3) + PD1
(17) - SLIN
(4) + PD2
(12) + PE
Содержание SATELLITE M40 Series
Страница 2: ...ii S No ...
Страница 12: ...Chapter 1 Hardware Overview ...
Страница 13: ...1 Hardware Overview ii Satellite M40 M45 TECRA A4 dynabook Vx 4 Maintenance Manual ...
Страница 42: ...2 Troubleshooting 2 i Satellite M40 M45 TECRA A4 dynabook Vx 4 Maintenance Manual 2 Chapter 2 Troubleshooting ...
Страница 71: ...Chapter 3 Diagnostic Programs ...
Страница 74: ......
Страница 142: ...Chapter 4 Replacement Procedures 4 1 ...
Страница 143: ...4 Replacement Procedures 4 ii Satellite M40 M45 TECRA A4 dynabook Vx 4 Maintenance Manual ...
Страница 150: ...4 Replacement Procedures 4 1 General 4 2 Satellite M40 M45 TECRA A4 dynabook Vx 4 Maintenance Manual ...
Страница 213: ...6000 1 Appendices ...
Страница 214: ...Appendices App ii Satellite M40 M45 TECRA A4 dynabook VX 4 Maintenance Manual ...
Страница 217: ...Appendices Satellite M40 M45 TECRA A4 dynabooK VX 4 Maintenance Manual App v ...
Страница 235: ...Apx C Pin Assignments Appendices Satellite M40 M45 TECRA A4 dynabook VX 4 Maintenance Manual C 9 17 DVISC I O 18 NC ...