Laptop User Manual

130
7521
7521
Plus / N N/B MAINTENANCE
Plus / N N/B MAINTENANCE
8.12 PIO PORT TEST ERROR
When a print command is issued, printer prints nothing or garbage.
D/STB#
P_STB#
P_D/AFD#
P_D/INIT#
P_D/SLIN#
P_D/ACK#
P_D/BUSY
P_D/PE
P_D/SLCT
P_D/ERR#
D/AFD#
D/INIT#
D/SLIN#
D/ACK#
D/BUSY
D/PE
D/SLCT
D/ERR#
U27
PC97338VJG
SUPER I/O
P_LPD[0:7]
J505
FA1
FA2
FA3
FA4
L1
SH19
CA3,CA4,CA5,CA6,C5
SH19
IRQ7
PRINTER
D/LPD[0:7]
PIN DEFINITION OF PIO PORT LO OPBACK CONNECTOR FOR PIO TEST:
PIN 1 STB STROBE SIGNAL PIN 14 AFD AUTO LINE FEED PIN 1, 13 SHORT PIN 10,16 SHORT
PIN 2-9 D0 - D7 PARALLEL PORT DATA BUS D0 TO D7 PIN 15 ERR ERROR AT PRINTER PIN 2, 15 SHORT PIN 11,17 SHORT
PIN 10 ACK ACKNOWLEDGE HANDSHANK PIN 16 INIT INITIATE OUTPUT PIN 12, 14 SHORT
PIN 11 BUSY BUSY SIGNAL PIN 17 SLIN PRINTER SELECT
LOOPBACK CONNECTOR FOR EPP TEST:
PIN 12 PE PAPER END PIN 18-25: SIGNAL GROUND PIN 1, 2, 4, 6, 8 SHORT
PIN 13 SLCT PRINTER SELECTED PIN 3, 5, 7, 9, 16 SHORT
PIN 18, 19, 20, 21, 22, 23, 24, 25 SHORT