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After Sales
Technical Documentation
RAE/RAK–1N
Faultfinding/Disassembly
Page 8 – 17
Original, 05/97
1.1.1.17 Is N83 pin 1 toggling?
There should be seen about 300kHz voltage toggling between 0V and
VBatt. In oscilloscope there should be seen about 20 pulse sequences at
irregular pulse group periods. If not go to 1.1.1.18. Otherwise if there are
pulses coming to N83 pin 1 in continuous train the regulator is ’saturated’.
Check that valid LCD voltage is seen at C89 positive terminal. Measure
LCDVEE current with UI module connected. If current is higher than 4mA
big LCD in UI module is probably corrupted.
1.1.1.18 LCDVEE controller fault
Replace N83.
1.1.1.19 Is V89 anode voltage toggling?
There should be seen irregular shaped voltage bursts at peak magnitude
between 0V and valid LCD voltage (little higher). Voltage bursts decrease
in magnitude during their period. The bursts appear at irregular time
intervals. If not go to 1.1.1.20.
1.1.1.20 Check L81, V81, R77, R74, R85
Most probably V81 is broken. Check and replace. If not helping check
L81 and R74, R85. These resistors provide current feedback information
to the controller. There should be seen increasing voltage spikes at peak
magnitude of a little less than 300mV. If yes L81, V81, R74 and R85 are
OK. Then check and replace V89.
1.1.1.21 Is there valid bias voltage at C89 plus terminal?
Measure DC voltage over C89. It should be within 20V – 24V at room
temperature. Measure also peak–to–peak AC voltage from 100ms
sample. It should be less than 100mV. If not go to 1.1.1.22. If yes go to
1.1.1.23.
1.1.1.22 Check V89, C89 and feedback resistors
First measure voltage from N83 pin 3. It should be exactly 1.5V. If yes
replace C89. Also check C95 and V89. If not check resistance and
replace if needed for resistors: R84, R82, R78, R93 and R97. Also check
C79.
1.1.1.23 Check V87, V82, R95, R98, R94
The fault is that the regulator works correctly but the switch between the
regulator and LCD module is broken. This switch is needed to totally cut
voltage from LCDVEE line. First measure collector voltage of V87. It
should be near 0V. If not check and replace V87, R95 and C98. If yes
replace V82. Also check R94 and R98.
Содержание 9000i
Страница 7: ...After Sales Technical Documentation RAE RAK 1N Series Original 08 96 Chapter 1 Overview ...
Страница 67: ...After Sales Technical Documentation RAE RAK 1N Series Amendment 1 04 97 Chapter 3 Transceiver GE8 GE9 RF Block ...
Страница 93: ...After Sales Technical Documentation RAE RAK 1N Series Chapter 4 Transceiver GE8 GE9 UIF Module ...
Страница 106: ...After Sales Technical Documentation RAE RAK 1N UIF Page 4 14 Amendment 1 04 97 This page intentionally left blank ...
Страница 107: ...After Sales Technical Documentation RAE RAK 1N Series Original 08 96 Chapter 5 Transceiver GE8 GE9 SIM Flex Module ...
Страница 112: ...After Sales Technical Documentation RAE RAK 1N SIM Flex Page 5 6 Original 08 96 This page intentionally left blank ...
Страница 113: ...After Sales Technical Documentation RAE RAK 1N Series Original 08 96 Chapter 6 PDA Hardware Module GP1 ...
Страница 116: ...After Sales Technical Documentation RAE RAK 1N PDA Hardware Page 6 4 Original 08 96 This page intentionally left blank ...
Страница 158: ...After Sales Technical Documentation RAE RAK 1N PDA Hardware Page 6 46 Original 08 96 This page intentionally left blank ...
Страница 159: ...After Sales Technical Documentation RAE RAK 1N Series Amendment 1 04 97 Chapter 7 Service Software ...
Страница 243: ...After Sales Technical Documentation RAE RAK 1N Series Original 05 97 Chapter 8 Faultfinding Disassembly ...
Страница 287: ...After Sales Technical Documentation RAE RAK 1N Series Original 08 96 Chapter 9 Service Tools ...
Страница 301: ...After Sales Technical Documentation RAE 1N Series Original 04 97 Chapter 10 Schematics ...
Страница 303: ...RAE 1N Original 08 96 10 11 Page 1 Figure 1 Component Layout Bottom ...
Страница 304: ...RAE 1N Original 08 96 10 12 Page Figure 2 Component Layout Top ...
Страница 305: ...RAE 1N Original 08 96 10 13 Page Figure 3 Baseband Circuit Diagram PWRU ...
Страница 306: ...RAE 1N Original 08 96 10 14 Page Figure 4 Baseband Circuit Diagram MCM1 ...
Страница 307: ...RAE 1N Original 08 96 10 15 Page Figure 5 Baseband Circuit Diagram MCM2 ...
Страница 308: ...RAE 1N Original 08 96 10 16 Page Figure 6 RF TX Circuit Diagram ...
Страница 309: ...RAE 1N Original 08 96 10 17 Page Figure 7 RF RX Circuit Diagram ...
Страница 310: ...RAK 1N 10 20 Page Amendment 1 04 97 Figure 18 PCN Component Layout Bottom ...
Страница 311: ...RAK 1N 10 21 Page Amendment 1 04 97 Figure 19 PCN Component Layout Top ...
Страница 312: ...RAK 1N 10 22 Page Amendment 1 04 97 Figure 20 PCN RF TX ...
Страница 313: ...RAK 1N 10 23 Page Amendment 1 04 97 Figure 21 PCN RF RX ...
Страница 314: ...RAK 1N 10 24 Page Amendment 1 04 97 Figure 22 UIF Schematic PCN ...
Страница 315: ...RAK 1N 10 25 Page Amendment 1 04 97 Figure 23 UIF Component Layout PCN ...
Страница 316: ...RAE 1N Original 05 97 10 3 Page Figure 1 PDA Block Diagram Edit 82 for layout 13a ...
Страница 317: ...RAE 1N Original 05 97 10 4 Page Figure 2 PDA Power Unit PWRU Edit 108 for layout 13a ...
Страница 318: ...RAE 1N Original 05 97 10 5 Page Figure 3 PDA Serial Interface SIRU Edit 24 for layout 13a ...
Страница 319: ...RAE 1N Original 05 97 10 6 Page Figure 4 PDA MCU and Memory PROCU Edit 121 for layout 13a ...
Страница 320: ...RAE 1N Original 05 97 10 7 Page Figure 5 PDA EMIU Edit 21 for layout 13a ...
Страница 321: ...RAE 1N Original 05 97 10 8 Page Figure 6 Keyboard matrix Edit 24 for layout 13a ...
Страница 322: ...RAE 1N Original 05 97 10 9 Page Figure 7 PDA Memory Edit 28 for layout 13a ...
Страница 323: ...RAE 1N Original 05 97 10 10 Page Figure 8 PDA Component Layout 13a ...
Страница 324: ...RAE 1N Original 08 96 10 18 Page Figure 1 UIF Schematic ...
Страница 325: ...RAE 1N Original 08 96 10 19 Page Figure 2 Component Layout Uif ...
Страница 326: ...After Sales Technical Documentation RAE RAK 1N Series Original 08 96 Accessories ...
Страница 340: ...After Sales Technical Documentation RAE RAK 1N Series Original 08 96 CARK60 Installation Guide ...
Страница 352: ...After Sales Technical Documentation Appendix 2 RAE RAK 1N Amendment 1 04 97 PARTS LISTS ...
Страница 399: ...After Sales Technical Documentation RAE RAK 1N Parts Lists Page 48 Amendment 1 04 97 Mechanical Assy Parts RAE 1N ...
Страница 401: ...After Sales Technical Documentation RAE RAK 1N Parts Lists Page 50 Amendment 1 04 97 This page intentionally left blank ...
Страница 402: ...After Sales Technical Documentation Appendix 1 RAE RAK 1N Original 08 96 QUICK GUIDE ...
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