TM 11-6625-3145-14
Maintenance: Troubleshooting-318/338 Service
Table 7-26
338 SERIAL TEST I/O ADDRESSES
Selected I/O Address
Program Function
80
Read content of address 80.
84
Write data to address 84.
8C
1. Write data 10 to address 8C.
2.
“
20
“
3.
”
40
“
4.
“
80
“
.
Repeat in rotation 1 through 4
90
Write data 55 to SIO Port-A data
register.
91
1. Write data 18 (reset command) to
SIO Port-A register #0.
2. Read SIO Port-A register #0
Repeat 1 and 2.
OPTION I/O FUNCTION LIST
I/O ADDRESS
=
80
CHIP
=
U32
FUNCTION
=
OPTION STATUS REGISTER
CONTROL
=
READ ONLY
bit =
7
6
5
4
3
2
1
0
battery
MODEM
external
status
xxxxx
xxxxx
xxxxx
xxxxx
xxxxx
DSR
trigger
status
bit 0: ON
=
external trigger is occured.
OFF
=
external trigger is not occured.
bit 1: ON
=
DSR signal is OFF.
OFF
=
DSR signal is ON.
bit 7: ON
=
battery voltage is low. (<2.4 Volt)
OFF
=
battery voltage is normal.
I/O ADDRESS
=
84
CHIP
=
RESET TO U22-B
FUNCTION
=
INITIALIZE THE EXTERNAL TRIGGER
CONTROL
=
WRITE ONLY
7-126
Summary of Contents for 318
Page 119: ...318 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Page 182: ...338 VERIFICATION AND ADJUSTMENT PROCEDURES ...
Page 253: ...318 ___________________ TROUBLESHOOTING TREES ...
Page 344: ...338 TROUBLESHOOTING TREES ...
Page 517: ...TM 11 6625 3145 14 318 338 4434 923 318 Block Diagram ...
Page 518: ...TM 11 6625 3145 14 318 338 4434 924 338 Block Diagram ...
Page 519: ...TM 11 6625 3145 14 318 338 4434 925 318 Acquisition Module Wiring Diagram ...
Page 520: ...TM 11 6625 3145 14 318 338 4434 926 318 338 Mainframe Wiring Diagram ...
Page 521: ...TM 11 6625 3145 14 318 338 4434 926 338 Acquisition Module Wiring Diagram ...
Page 522: ...TM 11 6625 3145 14 318 338 4434 928 Figure 9 1 318 A01 Input A Board Component Locations ...
Page 526: ...TM 11 6625 3145 14 ...
Page 528: ...TM 11 6625 3145 14 Figure 9 3 318 338 A03 ACQ Control Board Component Locations ...
Page 532: ...TM 11 6625 3145 14 ...
Page 536: ...TM 11 6625 3145 14 ...
Page 538: ...TM 11 6625 3145 14 ...
Page 539: ...TM 11 6625 3145 14 ...
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Page 541: ...TM 11 6625 3145 14 ...
Page 542: ...TM 11 6625 3145 14 Figure 9 8 318 338 A10 CRT Board Component Locations ...
Page 544: ...TM 11 6625 3145 14 Figure 9 9 318 338 A11 Inverter Board component Locations ...
Page 546: ...TM 11 6625 3145 14 Figure 9 10 318 338 A12 Regulator Board Component Locations ...
Page 551: ...TM 11 6625 3145 14 Figure 9 12 338 A01 Input A Board Component Locations ...
Page 553: ...TM 11 6625 3145 14 318 338 SERVICE ...
Page 554: ......
Page 555: ...PIN 058584 ...