After Sales
Technical Documentation
RAE/RAK–1N
Faultfinding/Disassembly
Page 8 – 25
Original, 05/97
3.1
LCD ON?
The first step is to check whether the LCD is on when in testmode. When
the PDA boots, and if the testmode pin is active, the CPU controls the
LCD on. If the LCD remains blank, then proceed to 3.1.1. If the LCD is set
on, then more detailed tests can be carried out when proceeding to 3.2
3.1.1
Disconnect UI Flex
In order to isolate the problems in the LCD module, disconnect the UI flex
from the PDA. Of course it can be easily tested if the problem disappears
when connecting a working LCD module to the PDA.
If the problem can be isolated to the PDA module, then proceed to 3.1.2
3.1.2
LCDVCC OK
Check if the LCDVCC is within it’s legal limits 4.5V..4.8V. If not, then
proceed to 3.1.2.1. If yes, then go to 3.1.3
3.1.2.1
LCDVCCON active
If the LCDVCCON is active (high) but the LCDVCC level is out of the limits
then proceed to 3.1.3.2. If the CPU does not control the LCDVCCON
active, then go to 3.1.2.2
3.1.2.2
CPU Fault
If the CPU does not control either the LCDVCCON or / and the
LCDVEEON, and the signals are not forced low in the PDA power unit,
then the CPU is defective.
3.1.3
LCDVEE OK?
Check if the LCDVEE is within it’s legal limits 19V..23V. If not, then
proceed to 3.1.3.1. If yes, then go to 3.1.4
3.1.3.1
LCDVEEON Active?
If the LCDVEEON is active (high) but the LCDVEE level is out of the limits
then proceed to 3.1.3.2 If the CPU does not control the LCDVCCON
active, then go to 3.1.2.2
3.1.3.2
Check PDA Power Unit
If the CPU controls the LCDVCCON active, but the LCDVCC is out of the
limits, check the PDA power unit. Check components V80, V86, R81, R72
and C91.
In a case that the CPU controls the LCDVEEON active, but the LCDVEE
is out of the limits, check the PDA power unit. If voltage at positive
terminal of C89 is not between 20V and 24V go to PDA power unit
complete check to 3.1.1. Check V84, R75, R76 and R96. There must be
4.1V voltage difference over V84. If OK check that N83 pin 4 is in low
Summary of Contents for 9000i
Page 7: ...After Sales Technical Documentation RAE RAK 1N Series Original 08 96 Chapter 1 Overview ...
Page 287: ...After Sales Technical Documentation RAE RAK 1N Series Original 08 96 Chapter 9 Service Tools ...
Page 301: ...After Sales Technical Documentation RAE 1N Series Original 04 97 Chapter 10 Schematics ...
Page 303: ...RAE 1N Original 08 96 10 11 Page 1 Figure 1 Component Layout Bottom ...
Page 304: ...RAE 1N Original 08 96 10 12 Page Figure 2 Component Layout Top ...
Page 305: ...RAE 1N Original 08 96 10 13 Page Figure 3 Baseband Circuit Diagram PWRU ...
Page 306: ...RAE 1N Original 08 96 10 14 Page Figure 4 Baseband Circuit Diagram MCM1 ...
Page 307: ...RAE 1N Original 08 96 10 15 Page Figure 5 Baseband Circuit Diagram MCM2 ...
Page 308: ...RAE 1N Original 08 96 10 16 Page Figure 6 RF TX Circuit Diagram ...
Page 309: ...RAE 1N Original 08 96 10 17 Page Figure 7 RF RX Circuit Diagram ...
Page 310: ...RAK 1N 10 20 Page Amendment 1 04 97 Figure 18 PCN Component Layout Bottom ...
Page 311: ...RAK 1N 10 21 Page Amendment 1 04 97 Figure 19 PCN Component Layout Top ...
Page 312: ...RAK 1N 10 22 Page Amendment 1 04 97 Figure 20 PCN RF TX ...
Page 313: ...RAK 1N 10 23 Page Amendment 1 04 97 Figure 21 PCN RF RX ...
Page 314: ...RAK 1N 10 24 Page Amendment 1 04 97 Figure 22 UIF Schematic PCN ...
Page 315: ...RAK 1N 10 25 Page Amendment 1 04 97 Figure 23 UIF Component Layout PCN ...
Page 316: ...RAE 1N Original 05 97 10 3 Page Figure 1 PDA Block Diagram Edit 82 for layout 13a ...
Page 317: ...RAE 1N Original 05 97 10 4 Page Figure 2 PDA Power Unit PWRU Edit 108 for layout 13a ...
Page 318: ...RAE 1N Original 05 97 10 5 Page Figure 3 PDA Serial Interface SIRU Edit 24 for layout 13a ...
Page 319: ...RAE 1N Original 05 97 10 6 Page Figure 4 PDA MCU and Memory PROCU Edit 121 for layout 13a ...
Page 320: ...RAE 1N Original 05 97 10 7 Page Figure 5 PDA EMIU Edit 21 for layout 13a ...
Page 321: ...RAE 1N Original 05 97 10 8 Page Figure 6 Keyboard matrix Edit 24 for layout 13a ...
Page 322: ...RAE 1N Original 05 97 10 9 Page Figure 7 PDA Memory Edit 28 for layout 13a ...
Page 323: ...RAE 1N Original 05 97 10 10 Page Figure 8 PDA Component Layout 13a ...
Page 324: ...RAE 1N Original 08 96 10 18 Page Figure 1 UIF Schematic ...
Page 325: ...RAE 1N Original 08 96 10 19 Page Figure 2 Component Layout Uif ...
Page 326: ...After Sales Technical Documentation RAE RAK 1N Series Original 08 96 Accessories ...
Page 352: ...After Sales Technical Documentation Appendix 2 RAE RAK 1N Amendment 1 04 97 PARTS LISTS ...
Page 402: ...After Sales Technical Documentation Appendix 1 RAE RAK 1N Original 08 96 QUICK GUIDE ...
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