![Nokia 9000i Service Manual Download Page 258](http://html.mh-extra.com/html/nokia/9000i/9000i_service-manual_22031258.webp)
After Sales
Technical Documentation
RAE/RAK–1N
Faultfinding/Disassembly
Page 8 – 16
Original, 05/97
1.1.1.10 Reset OK?
The PWRGOOD signal should go from low to high after minimum time of
140ms when Vsys has risen to a valid level. Time between battery
connection and valid voltage at Vsys line should be in the order of 1.5ms.
If PWRGOOD signal rises too fast, or the signal levels are illegal, then go
to 1.1.1.11.
1.1.1.11
Replace D80
If this is not helping PWRGOOD line is pulled up or down somewhere or
there is a CPU fault.
1.1.1.12 LCDVEE OK?
In boot sequence LCD is on. If voltage other than 20V – 24V near room
temperature is seen at LCDVEE terminal then go to 1.1.1.13.
1.1.1.13 Is LCDVEEON enabled?
There is LCD bias voltage shutdown feature in PDA normal use after set
inactivity time period. Check that LCDVEEON line is in logic high state
(3.0V – 3.4V). If not go to 3.1.1.14. Otherwise go to 1.1.1.15.
1.1.1.14 Command LCDVEE on
Use PC Locals to command LCDVEE permanently on. Select ’I/O–Space
Functions’/’Target Signal Control’ to toggle LCDVEE. This menu can also
be used to control LCDVCC, flash program voltage (VCC5) and
LCDPWM. When LCD module is not connected verify also LCDVEE off
state by toggling the control by PCLocals.
1.1.1.15 Is 0V applied to N83 pin 4?
Check that voltage between 0V and 0.3V is seen at N83 controller pin 4.
This signal enables the controller. If not go to 1.1.1.16. When LCD
module is not connected verify also LCDVEE off state by toggling the
control by PCLocals. In LCDVEE off state N83 pin 4 must see battery
voltage.
1.1.1.16 Check N82, R75, R76, R96
First check that resistors R75, R76 and R96 are OK. Check that voltage
at comparator N82 pin 3 is in the range of 1.55V – 1.75V. If not check
reference V84. In cathode of V84 voltage of 4.1V should be seen. If OK
replace N82. After that if still problems verify that comparator N82 pin 2
has higher voltage than pin 3. If yes and N82 pin 1 is not low (0V – 0.3V)
then change N83.
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 ...
Page 434: ......