TM 11-6625-3145-14
Maintenance: Troubleshooting-318/338 Service
Table 7-17
338 ROM TEST ADDRESS ASSIGNMENT
ROM
U#
Address
Enabled by
ROM1
U020
0000-3FFF
/ROM1
ROM2
U021
4000-7FFF
/ROM2
ROM3
U022
8000-BFFF
/ROM3
ROM4
U023
8000-BFFF
/ROM4
ROM5
U024
8000-BFFF
/ROM5
ROM6
U025
8000-BFFF
/ROM6
The chip-select signals for ROM1 and ROM2 are decoded by U001 (dual 2-line to 4-line decoder/demultiplexer, 74LS139)
on the A05 ROM/Threshold board. All the other chip select signals are doubly decoded. ROM3, ROM4, ROM5, and
ROM6 are decoded by U001 B (74LS139) which is enabled by U001A (74LS 139) on the A05 board. These ROMS are
also selected by two data bits from U100 (74LS174) on the A05 board in order to constitute four pages of ROMs.
4434-562
Figure 7-36. 338 MPU memory address assignment.
7-101
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 ...
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Page 536: ...TM 11 6625 3145 14 ...
Page 538: ...TM 11 6625 3145 14 ...
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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 ...