MiTAC MiNote 7321, Service Manual

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7321 N/B Maintenance 7321 N/B Maintenance
+5V
D2
RLS414B
FA2
FA1
20
13
11
9
7
6
5
4
3
D/LPD0
D/LPD1
D/LPD2
D/LPD3
D/LPD4
D/LPD5
D/LPD6
D/LPD7
D/SLIN#
D/INIT#
D/SLCT
D/PE
D/BUSY
2
1
8
10
12
D/SLIN#
P/STB#
D/AFD#
D/INIT#
D/ACK#
D/ERR#
D/SLCT
D/PE
D/BUSY
27
16
28
15
PRN LPD0
PRN LPD1
PRN LPD2
PRN LPD3
PRN LPD4
PRN LPD5
PRN LPD6
PRN LPD7
17
18
19
21
23
24
25
26
PRD0
PRD1
PRD2
PRD3
PRD4
PRD5
PRD6
PRD7
PIN DEFINITION OF PIO PORT LOOPBACK 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
J506
U24
U24
South
South
Bridge
Bridge
VT8231 VT8231
PRINTER
8.12 PIO Port Test Error
Symptom:
When a print command is issued, printer prints nothing or garbage.
D/SLIN#
D/INIT#
D/SLCT
D/PE
D/BUSY
D/STB# 14
U2
PACS1284
22
8
7
6
5
8
6
5
7
1
2
3
4
1
2
3
4
21