Troubleshooting
TLA 704 Color Portable Mainframe Service Manual
6–43
Remove modules
from portable
mainframe
Turn on power
Mainframe
powers on?
Yes
No
Mainframe appears
“dead” (dead screen -
no beeps)?
Possible cause:
1 Mainframe power cord is
not plugged in
2 Failed fuse.
3 Defective monitor
Yes
No
Flat-panel
display
blank?
Yes
Defective display,
defective interface board,
loose I/F board connector,
defective controller board
BIOS error
message?
Yes
See BIOS error
code, Table 6–6
on page 6–51
Run QAPlus/WIN
(see page 6–45 for
instructions)
Passes all
tests?
No
Repair/replace failed part
identified by QAPlus/WIN
Run TLA 700 mainframe diagnostics
(see page 6–46 for instructions)
Passes all
tests?
No
Controller board
defective
Start
No
Yes
Yes
No
Windows95
Boots?
No
Consult the troubleshooting
section of your Microsoft
Windows 95 manual
Yes
If the TLA 700 Application is not
already running, start it from the
Start menu.
TLA
Application
starts?
No
Done
Yes
No
External
monitor
blank, if
present?
Yes
Yes
No
External
monitor
attached?
No
Simulscan
enabled?
Reinstall TLA software
(see Installation manual)
Possible cause:
1 SIMMs incorrectly
installed or missing
2 Defective controller
board
Possible cause:
1 Monitor cable defective or not
connected to mainframe
2 External monitor controls
turned down
3 Defective monitor
External
monitor
display ok?
Defective controller board,
Defective external monitor,
Defective external monitor cable
Enable Simulscan
Refer to Controller BIOS
Setups in Appendix B of the
TLA 700 Installation Manual
Yes
No
Yes
Figure 6–15: Primary troubleshooting tree
Summary of Contents for TLA 704
Page 13: ...Service Safety viii TLA 704 Color Portable Mainframe Service Manual...
Page 17: ...Preface xii TLA 704 Color Portable Mainframe Service Manual...
Page 21: ...Introduction xvi TLA 704 Color Portable Mainframe Service Manual...
Page 22: ......
Page 35: ......
Page 44: ......
Page 48: ...Theory of Operation 3 4 TLA 704 Color Portable Mainframe Service Manual...
Page 49: ......
Page 51: ...Performance Verification 4 2 TLA 704 Color Portable Mainframe Service Manual...
Page 52: ......
Page 54: ...Adjustment Procedures 5 2 TLA 704 Color Portable Mainframe Service Manual...
Page 55: ......
Page 59: ...Maintenance 6 4 TLA 704 Color Portable Mainframe Service Manual...
Page 93: ...Removal and Installation Procedures 6 38 TLA 704 Color Portable Mainframe Service Manual...
Page 113: ...Repackaging Instructions 6 58 TLA 704 Color Portable Mainframe Service Manual...
Page 114: ......
Page 117: ......
Page 119: ...Electrical Parts List 8 2 TLA 704 Color Portable Mainframe Service Manual...
Page 120: ......
Page 123: ......
Page 141: ...Replaceable Parts List 10 18 TLA 704 Color Portable Mainframe Service Manual...
Page 142: ......
Page 143: ......