User Guide

PAMS
Technical Documentation
RAE-3
8. Troubleshooting
Page 8 – 88
Issue 1 06/01
Picture on
LCD?
Check test
patterns
with
WInTesla
OK?
LCD OK!
NO
Measure
V5Y_1,
should be
appr.–15V
NO V5Y_1 0V?
YES
ON
Measure
ST_INVOUT
(Fig.79)
YES
Check components
L050, C068, V062
and V069
ON
Measure
DD_P1
(Fig.80)
YES
Check
components C058
and R075
Display ASIC
fault(D054)
ON
Measure
BRIGHT
(Fig.81)
NO
See Section: bl8
related PDA UI
problems
YES
Measure
SET, should
be 1.4V
OK?
NO
Check
components
R063 and R070
YES
Measure
CONT,
should be
400mV
Check
components
R068, R072,
R077 and V056
NO
Measure
TEMP,
should be
850mV
YES
Check
components
V055 and V058
NO
Measure
FB, should
be 900mV
OK?
YES
Check
components
R066, V061,
R067, R076,
V066, R078 and
R081
NO
See Section 2
YES
YES
See Section 3
NO
YES
Start Section 1
Figure 75.
OK?
OK?
OK?
OK?OK?
YES