Nokia 8890 Service Manual distrble
PAMS Technical Documentation
NSB–6 Series Transceivers
Disassembly &
Troubleshooting
Instructions
Issue 1 06/2000 E Nokia Mobile Phones Ltd.
NSB–6
Disassembly & Troubleshooting Instructions
PAMS Technical Documentation
CONTENTS
Disassembly of NSB–6 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Transceiver Troubleshooting 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Baseband Troubleshooting 8. . . . . . . . . . . . . . . . . . . . . . . . . . . .
PCB Test Points 8. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
PCB Test Point Pictures 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
C213, RFC in normal operation 11. . . . . . . . . . . . . . . . . . . . . .
J227, PURX (levels) 11. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J228, SLEEPCLK 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J236, RAMSELX 12. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J237, SYNTHDATA 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J241, MCUWRX 13. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J242, MCUAD1 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J245, SCLK 14. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J245, SCLK (DIFFERENT TIME SCALE IN OSCILLOSCOPE) 15
J250, COBBA (CSX) 15. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J251, COBBA(SDA) 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J252, COBBA(CLK) 16. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J253, PCMRXDATA, Audiotest, Loop ON, Input/Output Internal 17
J254, PCMDCLK 17. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J255, PCMSCLK 18. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J256, PCMTXDATA, Audiotest, Loop ON, Input/Output Internal 18
J260, EXTMCUDA0 19. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
J299, TXP, RF Control, TX, Burst, Tx level 14, Data Type Cont 19
L200, MIC, no mic connected 20. . . . . . . . . . . . . . . . . . . . . . . .
N310 PIN 19, Vibra, activated from keypad 20. . . . . . . . . . . .
N310 PIN 6, BUZZER_CTRL 21. . . . . . . . . . . . . . . . . . . . . . . .
R206, SENA 21. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
R211, VPP, WinTesla Self Test, MCU Eeprom interface 22.
Testing 22. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Troubleshooting 23. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Clock 24. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Sleep Clock 25. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power Supplies 26. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Phone is totally dead 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Flash programming fails 29. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Power doesn’t stay on or phone is jammed 29. . . . . . . . . . . .
Contact Service on the phone display 29. . . . . . . . . . . . . . . . .
SIM related faults 31. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Audio faults 32. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Charging fault 34. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
RF Testpoints (reference pictures at the back of the binder) 35
Pictures from RF measurement points 37. . . . . . . . . . . . . . . . . . .
Picture 1. RX I/Q from Hagar to baseband 37. . . . . . . . . . . . .
Picture 2. RX I/Q before AGC 37. . . . . . . . . . . . . . . . . . . . . . . .
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Issue 1 06/2000
PAMS Technical Documentation
Picture 3. LNA control 38. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Picture 4. PA selection and control 38. . . . . . . . . . . . . . . . . . .
Picture 5. VBATT during TX burst 39. . . . . . . . . . . . . . . . . . . .
Picture 6. Switch control 39. . . . . . . . . . . . . . . . . . . . . . . . . . . .
Picture 7. Power detector control 40. . . . . . . . . . . . . . . . . . . . .
Picture 8. TX IQ signals 40. . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Picture 9. VCO, operating voltages 41. . . . . . . . . . . . . . . . . . .
Picture 10. Clock signals, VCTCXO, RFC 41. . . . . . . . . . . . .
NSB–6
Disassembly & Troubleshooting Instructions
Issue 1 06/2000
E Nokia Mobile Phones Ltd.
Page 3
NSB–6
Disassembly & Troubleshooting Instructions
Disassembly of NSB–6
Remove battery.
Step 1. Press the button on the side.
1.
Step 2. Slide the cover downwards and
the cover will be released.
2.
1.
PAMS Technical Documentation
Step 3. Lift the battery first
2.
from the lower end.
Step 4. Remove the battery.
3.
Remove the SIM card from its location.
4.
Step 1. Open the slide cover.
Step 2. Push the slide edge outwards.
NOTE: Use only numbered side 2 to release the slide.
Step 3. Lift the slide up simultaneously and the slide
will be released.
Remove the slide cover.
1.
2.
3.
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Issue 1 06/2000
PAMS Technical Documentation
Remove the antenna.
5.
Remove A–cover, speaker
7.
and power button.
NSB–6
Disassembly & Troubleshooting Instructions
NOTE: Pull out the whip antenna first.
Step 1. To remove the antenna, push with the thin spike
of SRT–3 (Battery Connector Extractor Tool) forward to
release the snaps.
Step 2. Release snap fixing using screw driver.
Step 3. Lift up the antenna.
NOTE: Be careful not brake the middle frame.
6.
Remove the frame
screws (4 pcs).
Screws are numbered according to
the tightening order.
4
3
NOTE: When
assembling the
screws, use 15
Ncm torque.
8.
2
1
Remove keymat module
screws (2 pcs).
Issue 1 06/2000
NOTE: When assembling the
screws, use 17 Ncm torque.
E Nokia Mobile Phones Ltd.
Page 5
NSB–6
Disassembly & Troubleshooting Instructions
9.
PAMS Technical Documentation
Push SW/slide switch before removing
the keymat module. Now remove the
keymat module and RTC–battery.
NOTE: Be careful not to damage the
SW/slide switch on the PCB.
10.
Parts can be separated:
– lcd module
– PCB
– buzzer rubber
– metal gasket
– bottom connector
– SIM connector
– Twin Rip
– vibra
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E Nokia Mobile Phones Ltd.
Issue 1 06/2000
PAMS Technical Documentation
11.
NSB–6
Disassembly & Troubleshooting Instructions
Remove the volume switch 1.
Remove the volume key 2.
12.
Turn the phone around.
Press down battery conector springs
using Battery Connector Extractor Tool.
Battery connector will be released.
13.
Release the latch snap.
Remove the latch and latch spring.
Issue 1 06/2000
E Nokia Mobile Phones Ltd.
Page 7
NSB–6
Disassembly & Troubleshooting Instructions
Transceiver Troubleshooting
Baseband Troubleshooting
Because of the underfilling of the MAD and combo memory , it is impossible
to change those.
PCB Test Points
Reference Signal Note
C213 RFC MAIN CLOCK (13MHz)
J100* PWM CHARGE CURRENT CONTROL
J101 FBUSTX FBUS TRANSMITTED DA TA
J102 FBUSRX FBUS RECEIVED DA TA
PAMS Technical Documentation
HAGAR (N505) –> MAD (D200)
CCONT (N100) –> CHAPS (N101)
MAD (D200) –> SERVICE INTERFACE
SERVICE INTERFACE –> MAD (D200)
J103 MBUS ONE WIRE TWO DIRECTION SERIAL BUS
(9600 BIT/S)
MAD (D200) <–> SERVICE INTERFACE
J104 CCONT CSX CCONT (N100) CHIP SELECT
MAD (D200) –> CCONT (N100)
J121# DATA_A SIM DATA
CCONT (N100) <–> SIM CARD READER
(X302)
J122# SIMIO/O_C SIM IO CONTROL
CCONT (N100) <–> SIM CARD READER
(X302)
J223 CCONT INT CCONT (N100) INTERRUPT
MAD (D200) –> CCONT (N100)
J226 VCXOPWR 26MHz SYSTEM CLOCK CONTROL
MAD (D200) –> VCXO (G830)
J227 PURX POWER UP RESET
CCONT (N100) –> MAD (D200)
J228 SLEEPCLK SLEEP CLOCK (32kHz)
CCONT (N100) –> MAD (D200)
J230 GND GROUND
J234* HAGAR _RESET_X HAGAR (N505) RESET
MAD (D200) –> HAGAR (N505)
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J235 ROM1SELX FLASH CHIP SELECT
MAD (D200) –> COMBO MEMORY (D210)
J236 RAMSELX RAM CHIP SELECT
MAD (D200) –> COMBO MEMORY (D210)
J237 SYNTHDATA
(SDATA)
J239 DSPXF NOT CONNECTED
J240 MCURDX MCU READ
HAGAR (N505) SERIAL DA TA
MAD (D200) –> HAGAR (N505)
MAD (D200) –> COMBO MEMORY (D210)
E Nokia Mobile Phones Ltd.
Issue 1 06/2000
PAMS Technical Documentation
J241 MCUWRX MCU WRITE
J242 MCUAD1 MCU ADDRESS LINE 1
NSB–6
Disassembly & Troubleshooting Instructions
NoteSignalReference
MAD (D200) –> COMBO MEMORY (D210)
MAD (D200) –> COMBO MEMORY (D210)
J245*
R205#
J250 COBBA CSX COBBA (N250) CHIP SELECT
J251 COBBA SDA COBBA (N250) SERIAL BUS DATA
J252 COBBA CLK COBBA (N250) SERIAL BUS CLOCK
J253 PCMRXDAT A AUDIO RECEIVED DA TA
J254 PCMDCLK AUDIO DATA CLOCK (512KHz)
J255 PCMSCLK AUDIO SYNC CLOCK (8kHz)
J255 ESYSRESETX COMPOMEMORY (D210) ENABLE
J256 PCMTXDATA AUDIO TRANSMITTED DA TA
J257 CCUT (MCUGE-
SCLK HAGAR (N505) SERIAL CLOCK
MAD (D200) –> HAGAR (N505)
MAD (D200) –> COBBA (N250)
MAD (D200) <–> COBBA (N250)
MAD (D200) –> COBBA (N250)
COBBA (N250) –> MAD (D200)
MAD (D200) –> COBBA (N250)
MAD (D200) –> COBBA (N250)
MAD (D200) –> COMBO MEMORY (D210)
MAD (D200) –> COBBA (N250)
CHARGE CUT
NIO0)
MAD (D200) –> CHAPS (N101)
J258* BUTTON_CTRL
(MCUGENIO1)
J259 MCUGENIO2 NOT CONNECTED
J260 EXTMCUDA0 MCU DATA LINE 0
J299*
R745#
L200 MIC MIC BIAS VOLTAGE, 2.1V IF NO MIC
N310 PIN 13 KBD LIGHT KEYPAD LED LIGHT CURRENT
N310 PIN 14 KBDLED_ADJ KEYPAD BACKLIGHT BRIGHTNESS AD-
N310 PIN 16 VIBRA_CTRL VIBRA DRIVE
N310 PIN 19 VIBRA VIBRA CONTROL PWM
N310 PIN 3 BUZZER BUZZER CONTROL PWM
TXP TRANSMITTER POWER CONTROL
HEADSET BUTTON DETECTION CONTROL
MAD (D200) –> XMICP
MAD (D200) <–> COMPOMEMORY (D210)
MAD (D200) –> RF
V250 –> MIC
UI–SWITCH (N310) –> KEYP AD BACKLIGHT LEDS
JUSTMENT
R311 –> UI–SWITCH (N310)
UI–SWITCH (N310) –> VIBRA (M300)
MAD (D200) –> UI–SWITCH (N310)
MAD (D200) –> UI–SWITCH (N310)
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E Nokia Mobile Phones Ltd.
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NSB–6
Disassembly & Troubleshooting Instructions
N310 PIN 6 BUZZER_CTRL BUZZER DRIVE
N310 PIN 7 KBLIGHTS KEYPAD AND DISPLAY BACKLIGHT CON-
N310 PIN 8 LCDLED_ADJ LCD BACKLIGHT BRIGHNESS ADJUST-
N310 PIN 9 LCD LIGHT LCD LED LIGHT CURRENT
N400 PIN 4 IRONX IRDA (N400) SHUTDOWN
N401 PIN 4 IRDA POWER 2.8V
R118 PWRONX POWER ON BUTTON
PAMS Technical Documentation
NoteSignalReference
UI–SWITCH (N310) –> BUZZER (B301)
TROL
MAD (D200) –> UI–SWITCH (N310)
MENT
R310 –> UI–SWITCH (N310)
UI–SWITCH (N310) –> DISPLA Y BACKLIGHT LEDS
MAD (D200) –> IRDA (N400)
N401 –> IRDA (N400)
POWER BUTTON (S330) –> CCONT (N100)
R206 SENA HAGAR (N505) CHIP SELECT
R211 VPP FLASH PROGRAMMING VOLTAGE
R277 EAD ACCESSORY DETECTION
*Not in NSB–6.
#Only in NSB–6.
MAD (D200) –> HAGAR (N505)
N220 –> COMPOMEMORY (D210)
XMICP –> CCONT (N100)
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Issue 1 06/2000
PAMS Technical Documentation
PCB Test Point Pictures
C213, RFC in normal operation
NSB–6
Disassembly & Troubleshooting Instructions
J227, PURX (levels)
Issue 1 06/2000
E Nokia Mobile Phones Ltd.
Page 11
NSB–6
Disassembly & Troubleshooting Instructions
J228, SLEEPCLK
PAMS Technical Documentation
J236, RAMSELX
Page 12
E Nokia Mobile Phones Ltd.
Issue 1 06/2000
PAMS Technical Documentation
J237, SYNTHDATA
NSB–6
Disassembly & Troubleshooting Instructions
J241, MCUWRX
Issue 1 06/2000
E Nokia Mobile Phones Ltd.
Page 13
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