Troubleshooting
TDS6000 Series Service Manual
6- 69
Table 6- 10: Beep codes (Bali) (Cont.)
Beeps
Description
8
Display memory R/W error
9
ROM checksum error (not used)
10
CMOS shutdown register test error
11
Invalid BIOS (for example, POST module not found, etc.)
BIOS Beep Codes (Radisys NLX)
When the NLX board powers-on a number of the BIOS checkpoints generate an
audible ’beep’ code on failure using the standard PC speaker (also routed
through the board audio system). The beep codes are made up of up to 4 groups
of short beeps and are listed in Table 6--11.
If your instrument does not contain a speaker, attach a speaker to the display-
adapter board square pins to hear the codes.
Table 6- 11: Beep codes (Radisys)
Check-
point code
Error message
Beep code
16h
BIOS ROM checksum
1-2-2-3
20h
Test DRAM refresh
1-3-1-1
22h
Test 8742 keyboard controller
1-3-1-3
2Ch
Test 512 Kb base address lines
1-3-4-1
2Eh
Test low byte of 512 Kb base memory
1-3-4-3
46h
Check ROM copyright notice
2-1-2-3
58h
Test for unexpected interrupts
2-2-3-1
98h
Search for option ROMs (beep for bad checksum)
1-2
B4h
One beep before boot
1
Dip Switch Controls
Dip switch is used to direct program flow during power on self test (POST). A
switch set to ON is closed and presents a low state (0 V) to the switch buffer.
This is the default switch position. A switch set to OFF is open and presents a
high state (3.3 V) to the switch buffer. This is the ’set’ position. Table 6--12
describes the switch functions.
Содержание TDS6404
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Страница 14: ...Table of Contents x TDS6000 Series Service Manual...
Страница 18: ...Service Safety Summary xiv TDS6000 Series Service Manual...
Страница 52: ...Operating Information 2 12 TDS6000 Series Service Manual...
Страница 56: ...Theory of Operation 3 4 TDS6000 Series Service Manual...
Страница 60: ...Performance Verification 4 4 TDS6000 Series Service Manual...
Страница 84: ...Performance Tests 4 28 TDS6000 Series Service Manual...
Страница 150: ...Adjustment Procedures 5 2 TDS6000 Series Service Manual...
Страница 156: ...Maintenance 6 6 TDS6000 Series Service Manual...
Страница 170: ...Removal and Installation Procedures 6 20 TDS6000 Series Service Manual...
Страница 228: ...Repackaging Instructions 6 78 TDS6000 Series Service Manual...
Страница 232: ...Options 7 4 TDS6000 Series Service Manual...
Страница 234: ...Electrical Parts List 8 2 TDS6000 Series Service Manual...
Страница 252: ...Mechanical Parts List 10 16 TDS6000 Series Service Manual...