Related Manuals for Nokia RH-44 Series
Summary of Contents for Nokia RH-44 Series
- Page 1 CCS Technical Documentation RH-44 Series Transceivers Troubleshooting — BB Nokia Corporation Issue 1 04/2003 Confidential...
- Page 2 RH-44 Troubleshooting — BB CCS Technical Documentation Nokia Corporation Page 2 Confidential Issue 1 04/2003...
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Page 3: Table Of Contents
Power doesn’t stay on or the phone is jammed ............31 Charger ........................33 Audio faults .......................34 Earpiece........................34 Microphone ......................35 MIDI........................36 Vibra........................37 Display faults ......................38 Keypad faults ......................40 Power key........................ 40 UI modules ......................41 Nokia Corporation Issue 1 04/2003 Confidential Page 3... - Page 4 RH-44 Troubleshooting — BB CCS Technical Documentation Nokia Corporation Page 4 Confidential Issue 1 04/2003...
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Page 5: Troubleshooting Overview
32 kHz clock supply. The period of the sleep/wake up cycle (slotted cycle) is 1.28N seconds, where N= 0, 1, 2, depending on the slot cycle index. RH-44 supports standard Nokia two-wire and three-wire chargers (ACP-x and LCH-9). However, the three-wire chargers are treated as two-wire chargers. The PWM control signal for controlling the three-wire charger is ignored. -
Page 6: Flash Programming
FBUSRX, MBUS, and BSI connections for the connection to the baseband. The connection is through the UEM — which means that the logic levels correspond to 2.7V. Power is supplied using the battery contacts. Nokia Corporation Page 6 Confidential Issue 1 04/2003... -
Page 7: Baseband Power Up
"1" and then uses FBUSRX for writing and MBUS for clocking. The prommer will indicate to UEM that flash programming will take place by writing 8-bit password (*0xC9") to UEM after BSI is set to high. After the Nokia Corporation Issue 1 04/2003 Confidential... - Page 8 Measure points Production test pattern (J396) Figure 3: Flashing (2) Ch1-> PURX Ch2-> MBUS toggled three times for MCU initialization Ch3-> FBUS_TX low, MCU indicates that prommer has been noticed Ch4-> FBUS_RX Nokia Corporation Page 8 Confidential Issue 1 04/2003...
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Page 9: Power Up And Reset
UEM power on—except for the SIM regulator and Vflash2. Vsim is not used this moment and Vflahs2 is used for active cover. The UEM internal watchdogs are running during the UEM reset state, with the longest watchdog time selected. If the Nokia Corporation Issue 1 04/2003 Confidential... - Page 10 Reference signal PwrOnX Charger Detection UEMRSTX VFlash1 VCORE VANA 19.2MHz Clk PURX 32kHz XTAL t1 = 20ms t3 = 500us t2 = 200ms t4 = 20ms Figure 5: Power on sequence and timing Nokia Corporation Page 10 Confidential Issue 1 04/2003...
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Page 11: Power Up With Pwr Key
UEM generates 100 mA constant output current from the connected charger’s output voltage. As the battery charges, its voltage rises, and when VBAT voltage level is higher than master reset threshold limit (V ) is detected START_UP charge is termi- MSTR+ nated. Nokia Corporation Issue 1 04/2003 Confidential Page 11... -
Page 12: Rtc Alarm Power Up
The average current consumption of the phone in sleep mode can vary depending mainly on SW; however, on average is about 9 mA. In the ACTIVE mode, the phone is in normal operation, scanning for channels, listening Nokia Corporation Page 12 Confidential... -
Page 13: Power Distribution
VCORE is supplied by a DC/DC switching supply, which provides nominal voltages and currents (See Table 1.) UEM supplies also voltages VR1A, VR1B, VR2, VR3, VR4, VR5, VR6, and VR7 for RF. (See Table 2). Nokia Corporation Issue 1 04/2003 Confidential Page 13... -
Page 14: Clock Distribution
The main clock signal for the baseband is generated from the voltage and temperature controlled crystal oscillator VCTCXO (G501). This 19.2 MHz sine wave clock signal is fed to RFCLK pin of UPP. (See Figure 7 for the waveform.) Nokia Corporation Page 14 Confidential... -
Page 15: Rfconvclk (19.2 Mhz Digital)
CBUSClk Interface A 1.2 MHz clock signal is use for CBUS, which is used by the MCU to transfer data between UEM and UPP. (See the following figure for Cbus data transfer.) Nokia Corporation Issue 1 04/2003 Confidential Page 15... -
Page 16: Dbusclk Interface
(VR3) from the UEM regulator output by turning off the controlled output signal SleepX from UPP. SLEEPClk (Digital) The UEM provides a 32kHz sleep clock for internal use and to UPP, where it is used for Nokia Corporation Page 16 Confidential Issue 1 04/2003... -
Page 17: Sleepclk (Analog)
UEM RTC circuit to turn on the phone during power off or sleep mode. (See next figure.) Figure 12: 32kHz analog waveform at 32KHz crystal input Charging operation Battery A 1000 mAh Lithium-Ion cell battery is used. Reading a resistor inside the battery pack Nokia Corporation Issue 1 04/2003 Confidential Page 17... -
Page 18: Charging Circuitry
The baseband supports DCT3 chargers from an electrical point of view. Both 2- and 3-wire type chargers are supported. For 3-wire charger, the control line is ignored. (See the following figure for details.) Nokia Corporation Page 18 Confidential... -
Page 19: Charger Detection
If the charger is accepted and identified, the appropriate charging algorithm is initiated. Tom ahawk Charger connector F100 X102 L100 ________ + VCHAR 42R/100MHz 1.5A C106 V100 1PMT16AT3 CHARGER(4:0) Figure 16: Charging circuit Nokia Corporation Issue 1 04/2003 Confidential Page 19... -
Page 20: Charge Control
Color LCD is used. Interface uses 9-bit data transfer. The interface is quite similar to DCT3-type interface, except Command/Data information is transferred together with the data. D/C bit set during each transmitted byte by MCU SW. The following figure is the waveform for LCD interface. Nokia Corporation Page 20 Confidential Issue 1 04/2003... -
Page 21: Accessory
330k pull down on the active cover side. Once the cover is detected, Vflash2 will be turned on to provide the power to the cover. The driving signal for the active cover is provided from the output of the MIDI audio amplifier. It is AC-coupled to the cover input. Nokia Corporation Issue 1 04/2003 Confidential... -
Page 22: Test Points
RH-44 Troubleshooting — BB CCS Technical Documentation Test Points Figure 18: RH-44 Test Points - Top Figure 19: RH-44 Test Points - bottom Nokia Corporation Page 22 Confidential Issue 1 04/2003... -
Page 23: Troubleshooting/Flowcharts
7 Charging fault First, carry out a thorough visual check of the module. Ensure in particular that: • there is no mechanical damage • soldered joints are OK • ASIC orientations are OK Nokia Corporation Issue 1 04/2003 Confidential Page 23... - Page 24 RH-44 Troubleshooting — BB CCS Technical Documentation Top troubleshooting map Phone dead Flash faults Phone is jammed Charger Top 2 Nokia Corporation Page 24 Confidential Issue 1 04/2003...
- Page 25 RH-44 CCS Technical Documentation Troubleshooting — BB Top 2 Audio faults Display faults Keypad faults Nokia Corporation Issue 1 04/2003 Confidential Page 25...
- Page 26 Is phone flash < 30 mA programming OK? Phone current is <= 35 mA Check BSI line X110, Is phone in local R202, R203, C230. Change UEM mode? Are they OK? OK restart Repair Nokia Corporation Page 26 Confidential Issue 1 04/2003...
- Page 27 V101. If OK, then bottom connector. change UEM or UPP Does waveform match Figure 2? Change UEM Phone does not set Flashbus TXD line low after the line has been high Flash faults page 2 Nokia Corporation Issue 1 04/2003 Confidential Page 27...
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Page 28: Phone Is Jammed
CCS Technical Documentation Phone is jammed Flash faults page 2 Can you read manufacturer ID and Change Flash device ID? Is phone totally dead? Phone doesn't start up or phone is jammed? Retest Nokia Corporation Page 28 Confidential Issue 1 04/2003... -
Page 29: Power Doesn't Stay On Or The Phone Is Jammed
R510, R512, R520, R521, R522, R517, Measure PURX and R518). If OK, change SleepX at test points G501. TP1 and TP2. Are they high (1.8V)? Change UPP Jammed page 2 Change UEM Nokia Corporation Issue 1 04/2003 Confidential Page 29... - Page 30 Phone shutdown after Has the phone been Flash the phone 32 seconds flashed? Change UPP and re- flash. If problem still exists, change UEM and reflash phone. Read phone info. Is it Re-test Nokia Corporation Page 30 Confidential Issue 1 04/2003...
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Page 31: Charger
Check X100, F100, V100. Is it > 3.0 Vdc? L100, V100, C106 Read BTEMP value. Change UEM Is it -25C (0319)? Remove (fuse) F100 and measure current. Change UEM Is it -350-390 mA? Re-test Nokia Corporation Issue 1 04/2003 Confidential Page 31... -
Page 32: Audio Faults
UEM on EARP and R180. Check bias EARN? voltage on one end of C193 (2.1V). If OK, change the UEM. Check R150, C180, and C181. If OK, then Audio faults 2 change earpiece. Nokia Corporation Page 32 Confidential Issue 1 04/2003... -
Page 33: Microphone
C174 and L122, then L122 and C174? change microphone. Is signal going out of Check signal at R160. UEM at XEAR, pin 10 If OK, change UEM. on bottom connector? Audio faults 3 Re-test Nokia Corporation Issue 1 04/2003 Confidential Page 33... -
Page 34: Midi
MIC1 to HF single-ended output. Also set GenIO(28) high. Check signal at C157. Change UEM Is signal OK? Check signal at MIDI speaker pads. Is Change speaker signal OK? Audio faults 4 Change UEM Nokia Corporation Page 34 Confidential Issue 1 04/2003... -
Page 35: Vibra
DEV_HOST -> DEV_PC -> PN_ACCESSORY -> PN_OBJ_ROUTING_REQ -> PN_OBJ_PC -> UTID_100 -> ACC_VIBRA_CTRL_REQ. Select "ACC_ON" and click "Send" Measure UEM signal on pin 2 of M300. Is Change UEM signal OK? Change vibra Nokia Corporation Issue 1 04/2003 Confidential Page 35... -
Page 36: Display Faults
UTID -> LIGHT_CONTROL_REQ -> LIGHT_CONTROL_TARGER_KBD. Select "LIGHT_STATE_BLINK" and click "Send" Measure UEM signal Change UEM at R306. Is signal OK? Measure voltage at Change LM 2795 LEDs. Is it OK? Display faults 2 Change LEDs Nokia Corporation Page 36 Confidential Issue 1 04/2003... - Page 37 TEST_DISPLAY_SET -> NUM_SB: -> TEST_SB_UI_DISPLAY_PATTERN -> SB_LENGTH. Select "TEST_PATTERN_ALTPIXELS" and click "Send" Check signal at pin 1 ("1"), 2 ("0"), 4 (data), Change UPP and 5 (clock). Are the signals OK? Change display Nokia Corporation Issue 1 04/2003 Confidential Page 37...
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Page 38: Keypad Faults
Measure voltage at Is power key working? R304. If OK, change S300. Is it HIGH? UEM. Measure voltage at S300 when power key Change S300 is pressed. Is it HIGH? Keypad faults 2 Nokia Corporation Page 38 Confidential Issue 1 04/2003... -
Page 39: Ui Modules
Z300. OK, change UPP. Are they -1.8V? Measure ROW0-4 signals between Z300 Change Z300 and keypads. Are they -1.8V? Make sure there are no shorts on Z300. If OK, change UPP Nokia Corporation Issue 1 04/2003 Confidential Page 39... - Page 40 RH-44 Troubleshooting — BB CCS Technical Documentation Nokia Corporation Page 40 Confidential Issue 1 04/2003...