User Guide

NSM–3
Disassembly & Troubleshooting Instructions
PAMS Technical Documentation
Page 8
Issue 1 12/1999
 Nokia Mobile Phones Ltd.
NoteSignalReference
J241 MCUWRX MCU WRITE
MAD (D200) –> COMBO MEMORY (D210)
J242 MCUAD1 MCU ADDRESS LINE 1
MAD (D200) –> COMBO MEMORY (D210)
J245*
R205#
SCLK HAGAR (N505) SERIAL CLOCK
MAD (D200) –> HAGAR (N505)
J250 COBBA CSX COBBA (N250) CHIP SELECT
MAD (D200) –> COBBA (N250)
J251 COBBA SDA COBBA (N250) SERIAL BUS DATA
MAD (D200) <–> COBBA (N250)
J252 COBBA CLK COBBA (N250) SERIAL BUS CLOCK
MAD (D200) –> COBBA (N250)
J253 PCMRXDATA AUDIO RECEIVED DATA
COBBA (N250) –> MAD (D200)
J254 PCMDCLK AUDIO DATA CLOCK (512KHz)
MAD (D200) –> COBBA (N250)
J255 PCMSCLK AUDIO SYNC CLOCK (8kHz)
MAD (D200) –> COBBA (N250)
J255 ESYSRESETX COMPOMEMORY (D210) ENABLE
MAD (D200) –> COMBO MEMORY (D210)
J256 PCMTXDATA AUDIO TRANSMITTED DATA
MAD (D200) –> COBBA (N250)
J257 CCUT (MCUGE-
NIO0)
CHARGE CUT
MAD (D200) –> CHAPS (N101)
J258* BUTTON_CTRL
(MCUGENIO1)
HEADSET BUTTON DETECTION CON-
TROL
MAD (D200) –> XMICP
J259 MCUGENIO2 NOT CONNECTED
J260 EXTMCUDA0 MCU DATA LINE 0
MAD (D200) <–> COMPOMEMORY (D210)
J299*
R745#
TXP TRANSMITTER POWER CONTROL
MAD (D200) –> RF
L200 MIC MIC BIAS VOLTAGE, 2.1V IF NO MIC
V250 –> MIC
N310 PIN 13 KBD LIGHT KEYPAD LED LIGHT CURRENT
UI–SWITCH (N310) –> KEYPAD BACK-
LIGHT LEDS
N310 PIN 14 KBDLED_ADJ KEYPAD BACKLIGHT BRIGHTNESS AD-
JUSTMENT
R311 –> UI–SWITCH (N310)
N310 PIN 16 VIBRA_CTRL VIBRA DRIVE
UI–SWITCH (N310) –> VIBRA (M300)
N310 PIN 19 VIBRA VIBRA CONTROL PWM
MAD (D200) –> UI–SWITCH (N310)
N310 PIN 3 BUZZER BUZZER CONTROL PWM
MAD (D200) –> UI–SWITCH (N310)