After Sales
Technical Documentation
RAE/RAK–1N
Faultfinding/Disassembly
Page 8 – 27
Original, 05/97
3.1.4
Check UI Flex
In a case that the LCDVCC and the LCDVEE are within their voltage
limits, the fault is likely in the other controlling signals. But first it is good to
check the UI flex. If the UI flex is OK, proceed to 3.1.5, otherwise go to
3.1.4.1
3.1.4.1
UI Flex Fault
Change the UI Flex.
3.1.5
Check PCLK, LP, FP, DISPON
If the CPU does control the PCLK, LP, FP and the DISPON in a
reasonable manner, then proceed to 3.1.5.1 If one of the synchronizing
signals (PCLK, LP, FP) remain still all the time, or if the DISPON is inactive
(low), then go to 3.1.5.2
3.1.5.1
LCD Module Fault
If all the control signals are OK at the end of UI flex, then the possible fault
is either in the LCD module or in the UI module.
3.1.5.2
CPU Fault
If the CPU does not control all the signals as it should it is likely to be
defective.
3.2
Change LCD Contrast
To check the functionality of the contrast controlling circuitry, choose the
LCD test from the service software. Choose any test picture and then the
desired contrast value 0..255, where 0 is the darkest and the 255 the
lightest.
3.3
Contrast Change OK?
Test if the contrast changing works at least with two different contrast
values. If the contrast seems to be good in the middle, low and high of the
tunable range, then proceed to 3.4 If the contrast does not change, or if
the range bad, then proceed to 3.3.1
3.3.1
LCDPWM OK?
Test if the duty factor of the PWM output of the CPU (D130/pin134) is
changing according to the value given in the LCD test with the service
software. If the level of the LCDPWM is OK, and the duty factor is
changing from 1/255 to 254/255 then proceed to 3.3.1.2, otherwise go to
3.3.1.1
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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