MiTAC 7521 PLUS/N - TROUBLE SHOOTING; NO POWER; NO DISPLAY; VGA CONTROLLER FAILURE LCD NO DISPLAY

101
7521
7521
Plus / N N/B MAINTENANCE
Plus / N N/B MAINTENANCE
7. Maintenance Diagnostics
7.3
7.3
.1
.1
Diagnostic Tools :
Diagnostic Tools :
LED * 8
LED * 8
PIO CONNECTOR * 1
OR
PIO CONNECTOR * 1
P/N:411904800001
DESCRIPTION :PWA;PWA-378PORT DEBUG BD
Note:Order it from MIC/TSSC
7.3
7.3
.2
.2
CIRCUIT:
CIRCUIT:
PIO
PIO
CONNECTOR
CONNECTOR
LED
LED
1
1
13
13
14
14
25
25
PIN1 : STROBE PIN 13 : SLCT
PIN1 : STROBE PIN 13 : SLCT
PIN10: ACK# PIN 16 : INT#
PIN10: ACK# PIN 16 : INT#
PIN11: BUSY PIN 17 : SELIN#
PIN11: BUSY PIN 17 : SELIN#
PIN12: PTERR PIN 14 : AUTOFD#
PIN12: PTERR PIN 14 : AUTOFD#
PIN{9:2}: PD{7:0}
PIN{9:2}: PD{7:0}